| /* |
| * Stack-less Just-In-Time compiler |
| * |
| * Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without modification, are |
| * permitted provided that the following conditions are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright notice, this list of |
| * conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright notice, this list |
| * of conditions and the following disclaimer in the documentation and/or other materials |
| * provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
| * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED |
| * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifdef __SOFTFP__ |
| #define ARM_ABI_INFO " ABI:softfp" |
| #else |
| #define ARM_ABI_INFO " ABI:hardfp" |
| #endif |
| |
| SLJIT_API_FUNC_ATTRIBUTE const char* sljit_get_platform_name(void) |
| { |
| #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) |
| return "ARMv7" SLJIT_CPUINFO ARM_ABI_INFO; |
| #elif (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| return "ARMv6" SLJIT_CPUINFO ARM_ABI_INFO; |
| #else |
| #error "Internal error: Unknown ARM architecture" |
| #endif |
| } |
| |
| /* Length of an instruction word. */ |
| typedef sljit_u32 sljit_ins; |
| |
| /* Last register + 1. */ |
| #define TMP_REG1 (SLJIT_NUMBER_OF_REGISTERS + 2) |
| #define TMP_REG2 (SLJIT_NUMBER_OF_REGISTERS + 3) |
| #define TMP_PC (SLJIT_NUMBER_OF_REGISTERS + 4) |
| |
| #define TMP_FREG1 (SLJIT_NUMBER_OF_FLOAT_REGISTERS + 1) |
| #define TMP_FREG2 (SLJIT_NUMBER_OF_FLOAT_REGISTERS + 2) |
| |
| /* In ARM instruction words. |
| Cache lines are usually 32 byte aligned. */ |
| #define CONST_POOL_ALIGNMENT 8 |
| #define CONST_POOL_EMPTY 0xffffffff |
| |
| #define ALIGN_INSTRUCTION(ptr) \ |
| (sljit_ins*)(((sljit_ins)(ptr) + (CONST_POOL_ALIGNMENT * sizeof(sljit_ins)) - 1) & ~((CONST_POOL_ALIGNMENT * sizeof(sljit_ins)) - 1)) |
| #define MAX_DIFFERENCE(max_diff) \ |
| (((max_diff) / (sljit_s32)sizeof(sljit_ins)) - (CONST_POOL_ALIGNMENT - 1)) |
| |
| /* See sljit_emit_enter and sljit_emit_op0 if you want to change them. */ |
| static const sljit_u8 reg_map[SLJIT_NUMBER_OF_REGISTERS + 5] = { |
| 0, 0, 1, 2, 3, 11, 10, 9, 8, 7, 6, 5, 4, 13, 12, 14, 15 |
| }; |
| |
| static const sljit_u8 freg_map[((SLJIT_NUMBER_OF_FLOAT_REGISTERS + 2) << 1) + 1] = { |
| 0, |
| 0, 1, 2, 3, 4, 5, 15, 14, 13, 12, 11, 10, 9, 8, |
| 7, 6, |
| 0, 1, 2, 3, 4, 5, 15, 14, 13, 12, 11, 10, 9, 8, |
| 7, 6 |
| }; |
| |
| static const sljit_u8 freg_ebit_map[((SLJIT_NUMBER_OF_FLOAT_REGISTERS + 2) << 1) + 1] = { |
| 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1 |
| }; |
| |
| #define RM(rm) ((sljit_ins)reg_map[rm]) |
| #define RM8(rm) ((sljit_ins)reg_map[rm] << 8) |
| #define RD(rd) ((sljit_ins)reg_map[rd] << 12) |
| #define RN(rn) ((sljit_ins)reg_map[rn] << 16) |
| |
| #define VM(vm) (((sljit_ins)freg_map[vm]) | ((sljit_ins)freg_ebit_map[vm] << 5)) |
| #define VD(vd) (((sljit_ins)freg_map[vd] << 12) | ((sljit_ins)freg_ebit_map[vd] << 22)) |
| #define VN(vn) (((sljit_ins)freg_map[vn] << 16) | ((sljit_ins)freg_ebit_map[vn] << 7)) |
| |
| /* --------------------------------------------------------------------- */ |
| /* Instrucion forms */ |
| /* --------------------------------------------------------------------- */ |
| |
| /* The instruction includes the AL condition. |
| INST_NAME - CONDITIONAL remove this flag. */ |
| #define COND_MASK 0xf0000000 |
| #define CONDITIONAL 0xe0000000 |
| #define PUSH_POOL 0xff000000 |
| |
| #define ADC 0xe0a00000 |
| #define ADD 0xe0800000 |
| #define AND 0xe0000000 |
| #define B 0xea000000 |
| #define BIC 0xe1c00000 |
| #define BKPT 0xe1200070 |
| #define BL 0xeb000000 |
| #define BLX 0xe12fff30 |
| #define BX 0xe12fff10 |
| #define CLZ 0xe16f0f10 |
| #define CMN 0xe1600000 |
| #define CMP 0xe1400000 |
| #define EOR 0xe0200000 |
| #define LDR 0xe5100000 |
| #define LDR_POST 0xe4100000 |
| #define LDREX 0xe1900f9f |
| #define LDREXB 0xe1d00f9f |
| #define LDREXH 0xe1f00f9f |
| #define MOV 0xe1a00000 |
| #define MUL 0xe0000090 |
| #define MVN 0xe1e00000 |
| #define NOP 0xe1a00000 |
| #define ORR 0xe1800000 |
| #define PUSH 0xe92d0000 |
| #define POP 0xe8bd0000 |
| #define REV 0xe6bf0f30 |
| #define REV16 0xe6bf0fb0 |
| #define RSB 0xe0600000 |
| #define RSC 0xe0e00000 |
| #define SBC 0xe0c00000 |
| #define SMULL 0xe0c00090 |
| #define STR 0xe5000000 |
| #define STREX 0xe1800f90 |
| #define STREXB 0xe1c00f90 |
| #define STREXH 0xe1e00f90 |
| #define SUB 0xe0400000 |
| #define SXTB 0xe6af0070 |
| #define SXTH 0xe6bf0070 |
| #define TST 0xe1000000 |
| #define UMULL 0xe0800090 |
| #define UXTB 0xe6ef0070 |
| #define UXTH 0xe6ff0070 |
| #define VABS_F32 0xeeb00ac0 |
| #define VADD_F32 0xee300a00 |
| #define VAND 0xf2000110 |
| #define VCMP_F32 0xeeb40a40 |
| #define VCVT_F32_S32 0xeeb80ac0 |
| #define VCVT_F32_U32 0xeeb80a40 |
| #define VCVT_F64_F32 0xeeb70ac0 |
| #define VCVT_S32_F32 0xeebd0ac0 |
| #define VDIV_F32 0xee800a00 |
| #define VDUP 0xee800b10 |
| #define VDUP_s 0xf3b00c00 |
| #define VEOR 0xf3000110 |
| #define VLD1 0xf4200000 |
| #define VLD1_r 0xf4a00c00 |
| #define VLD1_s 0xf4a00000 |
| #define VLDR_F32 0xed100a00 |
| #define VMOV_F32 0xeeb00a40 |
| #define VMOV 0xee000a10 |
| #define VMOV2 0xec400a10 |
| #define VMOV_i 0xf2800010 |
| #define VMOV_s 0xee000b10 |
| #define VMOVN 0xf3b20200 |
| #define VMRS 0xeef1fa10 |
| #define VMUL_F32 0xee200a00 |
| #define VNEG_F32 0xeeb10a40 |
| #define VORR 0xf2200110 |
| #define VPOP 0xecbd0b00 |
| #define VPUSH 0xed2d0b00 |
| #define VSHLL 0xf2800a10 |
| #define VSHR 0xf2800010 |
| #define VSRA 0xf2800110 |
| #define VST1 0xf4000000 |
| #define VST1_s 0xf4800000 |
| #define VSTR_F32 0xed000a00 |
| #define VSUB_F32 0xee300a40 |
| |
| #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) |
| /* Arm v7 specific instructions. */ |
| #define MOVT 0xe3400000 |
| #define MOVW 0xe3000000 |
| #define RBIT 0xe6ff0f30 |
| #endif |
| |
| #if (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS) |
| |
| static sljit_s32 function_check_is_freg(struct sljit_compiler *compiler, sljit_s32 fr, sljit_s32 is_32) |
| { |
| if (compiler->scratches == -1) |
| return 0; |
| |
| if (is_32 && fr >= SLJIT_F64_SECOND(SLJIT_FR0)) |
| fr -= SLJIT_F64_SECOND(0); |
| |
| return (fr >= SLJIT_FR0 && fr < (SLJIT_FR0 + compiler->fscratches)) |
| || (fr > (SLJIT_FS0 - compiler->fsaveds) && fr <= SLJIT_FS0) |
| || (fr >= SLJIT_TMP_FREGISTER_BASE && fr < (SLJIT_TMP_FREGISTER_BASE + SLJIT_NUMBER_OF_TEMPORARY_FLOAT_REGISTERS)); |
| } |
| |
| #endif /* SLJIT_ARGUMENT_CHECKS */ |
| |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| |
| static sljit_s32 push_cpool(struct sljit_compiler *compiler) |
| { |
| /* Pushing the constant pool into the instruction stream. */ |
| sljit_ins* inst; |
| sljit_uw* cpool_ptr; |
| sljit_uw* cpool_end; |
| sljit_s32 i; |
| |
| /* The label could point the address after the constant pool. */ |
| if (compiler->last_label && compiler->last_label->size == compiler->size) |
| compiler->last_label->size += compiler->cpool_fill + (CONST_POOL_ALIGNMENT - 1) + 1; |
| |
| SLJIT_ASSERT(compiler->cpool_fill > 0 && compiler->cpool_fill <= CPOOL_SIZE); |
| inst = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins)); |
| FAIL_IF(!inst); |
| compiler->size++; |
| *inst = 0xff000000 | compiler->cpool_fill; |
| |
| for (i = 0; i < CONST_POOL_ALIGNMENT - 1; i++) { |
| inst = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins)); |
| FAIL_IF(!inst); |
| compiler->size++; |
| *inst = 0; |
| } |
| |
| cpool_ptr = compiler->cpool; |
| cpool_end = cpool_ptr + compiler->cpool_fill; |
| while (cpool_ptr < cpool_end) { |
| inst = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins)); |
| FAIL_IF(!inst); |
| compiler->size++; |
| *inst = *cpool_ptr++; |
| } |
| compiler->cpool_diff = CONST_POOL_EMPTY; |
| compiler->cpool_fill = 0; |
| return SLJIT_SUCCESS; |
| } |
| |
| static sljit_s32 push_inst(struct sljit_compiler *compiler, sljit_ins inst) |
| { |
| sljit_ins* ptr; |
| |
| if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092))) |
| FAIL_IF(push_cpool(compiler)); |
| |
| ptr = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins)); |
| FAIL_IF(!ptr); |
| compiler->size++; |
| *ptr = inst; |
| return SLJIT_SUCCESS; |
| } |
| |
| static sljit_s32 push_inst_with_literal(struct sljit_compiler *compiler, sljit_ins inst, sljit_uw literal) |
| { |
| sljit_ins* ptr; |
| sljit_uw cpool_index = CPOOL_SIZE; |
| sljit_uw* cpool_ptr; |
| sljit_uw* cpool_end; |
| sljit_u8* cpool_unique_ptr; |
| |
| if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092))) |
| FAIL_IF(push_cpool(compiler)); |
| else if (compiler->cpool_fill > 0) { |
| cpool_ptr = compiler->cpool; |
| cpool_end = cpool_ptr + compiler->cpool_fill; |
| cpool_unique_ptr = compiler->cpool_unique; |
| do { |
| if ((*cpool_ptr == literal) && !(*cpool_unique_ptr)) { |
| cpool_index = (sljit_uw)(cpool_ptr - compiler->cpool); |
| break; |
| } |
| cpool_ptr++; |
| cpool_unique_ptr++; |
| } while (cpool_ptr < cpool_end); |
| } |
| |
| if (cpool_index == CPOOL_SIZE) { |
| /* Must allocate a new entry in the literal pool. */ |
| if (compiler->cpool_fill < CPOOL_SIZE) { |
| cpool_index = compiler->cpool_fill; |
| compiler->cpool_fill++; |
| } |
| else { |
| FAIL_IF(push_cpool(compiler)); |
| cpool_index = 0; |
| compiler->cpool_fill = 1; |
| } |
| } |
| |
| SLJIT_ASSERT((inst & 0xfff) == 0); |
| ptr = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins)); |
| FAIL_IF(!ptr); |
| compiler->size++; |
| *ptr = inst | cpool_index; |
| |
| compiler->cpool[cpool_index] = literal; |
| compiler->cpool_unique[cpool_index] = 0; |
| if (compiler->cpool_diff == CONST_POOL_EMPTY) |
| compiler->cpool_diff = compiler->size; |
| return SLJIT_SUCCESS; |
| } |
| |
| static sljit_s32 push_inst_with_unique_literal(struct sljit_compiler *compiler, sljit_ins inst, sljit_uw literal) |
| { |
| sljit_ins* ptr; |
| |
| if (SLJIT_UNLIKELY((compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4092)) || compiler->cpool_fill >= CPOOL_SIZE)) |
| FAIL_IF(push_cpool(compiler)); |
| |
| SLJIT_ASSERT(compiler->cpool_fill < CPOOL_SIZE && (inst & 0xfff) == 0); |
| ptr = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins)); |
| FAIL_IF(!ptr); |
| compiler->size++; |
| *ptr = inst | compiler->cpool_fill; |
| |
| compiler->cpool[compiler->cpool_fill] = literal; |
| compiler->cpool_unique[compiler->cpool_fill] = 1; |
| compiler->cpool_fill++; |
| if (compiler->cpool_diff == CONST_POOL_EMPTY) |
| compiler->cpool_diff = compiler->size; |
| return SLJIT_SUCCESS; |
| } |
| |
| static SLJIT_INLINE sljit_s32 prepare_blx(struct sljit_compiler *compiler) |
| { |
| /* Place for at least two instruction (doesn't matter whether the first has a literal). */ |
| if (SLJIT_UNLIKELY(compiler->cpool_diff != CONST_POOL_EMPTY && compiler->size - compiler->cpool_diff >= MAX_DIFFERENCE(4088))) |
| return push_cpool(compiler); |
| return SLJIT_SUCCESS; |
| } |
| |
| static SLJIT_INLINE sljit_s32 emit_blx(struct sljit_compiler *compiler) |
| { |
| /* Must follow tightly the previous instruction (to be able to convert it to bl instruction). */ |
| SLJIT_ASSERT(compiler->cpool_diff == CONST_POOL_EMPTY || compiler->size - compiler->cpool_diff < MAX_DIFFERENCE(4092)); |
| SLJIT_ASSERT(reg_map[TMP_REG1] != 14); |
| |
| return push_inst(compiler, BLX | RM(TMP_REG1)); |
| } |
| |
| static sljit_uw patch_pc_relative_loads(sljit_uw *last_pc_patch, sljit_uw *code_ptr, sljit_uw* const_pool, sljit_uw cpool_size) |
| { |
| sljit_uw diff; |
| sljit_uw ind; |
| sljit_uw counter = 0; |
| sljit_uw* clear_const_pool = const_pool; |
| sljit_uw* clear_const_pool_end = const_pool + cpool_size; |
| |
| SLJIT_ASSERT(const_pool - code_ptr <= CONST_POOL_ALIGNMENT); |
| /* Set unused flag for all literals in the constant pool. |
| I.e.: unused literals can belong to branches, which can be encoded as B or BL. |
| We can "compress" the constant pool by discarding these literals. */ |
| while (clear_const_pool < clear_const_pool_end) |
| *clear_const_pool++ = (sljit_uw)(-1); |
| |
| while (last_pc_patch < code_ptr) { |
| /* Data transfer instruction with Rn == r15. */ |
| if ((*last_pc_patch & 0x0e0f0000) == 0x040f0000) { |
| diff = (sljit_uw)(const_pool - last_pc_patch); |
| ind = (*last_pc_patch) & 0xfff; |
| |
| /* Must be a load instruction with immediate offset. */ |
| SLJIT_ASSERT(ind < cpool_size && !(*last_pc_patch & (1 << 25)) && (*last_pc_patch & (1 << 20))); |
| if ((sljit_s32)const_pool[ind] < 0) { |
| const_pool[ind] = counter; |
| ind = counter; |
| counter++; |
| } |
| else |
| ind = const_pool[ind]; |
| |
| SLJIT_ASSERT(diff >= 1); |
| if (diff >= 2 || ind > 0) { |
| diff = (diff + (sljit_uw)ind - 2) << 2; |
| SLJIT_ASSERT(diff <= 0xfff); |
| *last_pc_patch = (*last_pc_patch & ~(sljit_uw)0xfff) | diff; |
| } |
| else |
| *last_pc_patch = (*last_pc_patch & ~(sljit_uw)(0xfff | (1 << 23))) | 0x004; |
| } |
| last_pc_patch++; |
| } |
| return counter; |
| } |
| |
| /* In some rare ocasions we may need future patches. The probability is close to 0 in practice. */ |
| struct future_patch { |
| struct future_patch* next; |
| sljit_s32 index; |
| sljit_s32 value; |
| }; |
| |
| static sljit_s32 resolve_const_pool_index(struct sljit_compiler *compiler, struct future_patch **first_patch, sljit_uw cpool_current_index, sljit_uw *cpool_start_address, sljit_uw *buf_ptr) |
| { |
| sljit_u32 value; |
| struct future_patch *curr_patch, *prev_patch; |
| |
| SLJIT_UNUSED_ARG(compiler); |
| |
| /* Using the values generated by patch_pc_relative_loads. */ |
| if (!*first_patch) |
| value = cpool_start_address[cpool_current_index]; |
| else { |
| curr_patch = *first_patch; |
| prev_patch = NULL; |
| while (1) { |
| if (!curr_patch) { |
| value = cpool_start_address[cpool_current_index]; |
| break; |
| } |
| if ((sljit_uw)curr_patch->index == cpool_current_index) { |
| value = (sljit_uw)curr_patch->value; |
| if (prev_patch) |
| prev_patch->next = curr_patch->next; |
| else |
| *first_patch = curr_patch->next; |
| SLJIT_FREE(curr_patch, compiler->allocator_data); |
| break; |
| } |
| prev_patch = curr_patch; |
| curr_patch = curr_patch->next; |
| } |
| } |
| |
| if ((sljit_sw)value >= 0) { |
| if (value > cpool_current_index) { |
| curr_patch = (struct future_patch*)SLJIT_MALLOC(sizeof(struct future_patch), compiler->allocator_data); |
| if (!curr_patch) { |
| while (*first_patch) { |
| curr_patch = *first_patch; |
| *first_patch = (*first_patch)->next; |
| SLJIT_FREE(curr_patch, compiler->allocator_data); |
| } |
| return SLJIT_ERR_ALLOC_FAILED; |
| } |
| curr_patch->next = *first_patch; |
| curr_patch->index = (sljit_sw)value; |
| curr_patch->value = (sljit_sw)cpool_start_address[value]; |
| *first_patch = curr_patch; |
| } |
| cpool_start_address[value] = *buf_ptr; |
| } |
| return SLJIT_SUCCESS; |
| } |
| |
| #else |
| |
| static sljit_s32 push_inst(struct sljit_compiler *compiler, sljit_ins inst) |
| { |
| sljit_ins* ptr; |
| |
| ptr = (sljit_ins*)ensure_buf(compiler, sizeof(sljit_ins)); |
| FAIL_IF(!ptr); |
| compiler->size++; |
| *ptr = inst; |
| return SLJIT_SUCCESS; |
| } |
| |
| static SLJIT_INLINE sljit_s32 emit_imm(struct sljit_compiler *compiler, sljit_s32 reg, sljit_sw imm) |
| { |
| FAIL_IF(push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | ((sljit_u32)imm & 0xfff))); |
| return push_inst(compiler, MOVT | RD(reg) | ((imm >> 12) & 0xf0000) | (((sljit_u32)imm >> 16) & 0xfff)); |
| } |
| |
| #endif |
| |
| static SLJIT_INLINE sljit_s32 detect_jump_type(struct sljit_jump *jump, sljit_uw *code_ptr, sljit_uw *code, sljit_sw executable_offset) |
| { |
| sljit_sw diff; |
| |
| if (jump->flags & SLJIT_REWRITABLE_JUMP) |
| return 0; |
| |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| if (jump->flags & IS_BL) |
| code_ptr--; |
| |
| if (jump->flags & JUMP_ADDR) |
| diff = ((sljit_sw)jump->u.target - (sljit_sw)(code_ptr + 2) - executable_offset); |
| else { |
| SLJIT_ASSERT(jump->flags & JUMP_LABEL); |
| diff = ((sljit_sw)(code + jump->u.label->size) - (sljit_sw)(code_ptr + 2)); |
| } |
| |
| /* Branch to Thumb code has not been optimized yet. */ |
| if (diff & 0x3) |
| return 0; |
| |
| if (jump->flags & IS_BL) { |
| if (diff <= 0x01ffffff && diff >= -0x02000000) { |
| *code_ptr = (BL - CONDITIONAL) | (*(code_ptr + 1) & COND_MASK); |
| jump->flags |= PATCH_B; |
| return 1; |
| } |
| } |
| else { |
| if (diff <= 0x01ffffff && diff >= -0x02000000) { |
| *code_ptr = (B - CONDITIONAL) | (*code_ptr & COND_MASK); |
| jump->flags |= PATCH_B; |
| } |
| } |
| #else /* !SLJIT_CONFIG_ARM_V6 */ |
| if (jump->flags & JUMP_ADDR) |
| diff = ((sljit_sw)jump->u.target - (sljit_sw)code_ptr - executable_offset); |
| else { |
| SLJIT_ASSERT(jump->flags & JUMP_LABEL); |
| diff = ((sljit_sw)(code + jump->u.label->size) - (sljit_sw)code_ptr); |
| } |
| |
| /* Branch to Thumb code has not been optimized yet. */ |
| if (diff & 0x3) |
| return 0; |
| |
| if (diff <= 0x01ffffff && diff >= -0x02000000) { |
| code_ptr -= 2; |
| *code_ptr = ((jump->flags & IS_BL) ? (BL - CONDITIONAL) : (B - CONDITIONAL)) | (code_ptr[2] & COND_MASK); |
| jump->flags |= PATCH_B; |
| return 1; |
| } |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| return 0; |
| } |
| |
| static SLJIT_INLINE void inline_set_jump_addr(sljit_uw jump_ptr, sljit_sw executable_offset, sljit_uw new_addr, sljit_s32 flush_cache) |
| { |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| sljit_ins *ptr = (sljit_ins*)jump_ptr; |
| sljit_ins *inst = (sljit_ins*)ptr[0]; |
| sljit_ins mov_pc = ptr[1]; |
| sljit_s32 bl = (mov_pc & 0x0000f000) != RD(TMP_PC); |
| sljit_sw diff = (sljit_sw)(((sljit_sw)new_addr - (sljit_sw)(inst + 2) - executable_offset) >> 2); |
| |
| SLJIT_UNUSED_ARG(executable_offset); |
| |
| if (diff <= 0x7fffff && diff >= -0x800000) { |
| /* Turn to branch. */ |
| if (!bl) { |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 0); |
| } |
| inst[0] = (mov_pc & COND_MASK) | (B - CONDITIONAL) | (diff & 0xffffff); |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 1); |
| inst = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 1); |
| } |
| } else { |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 0); |
| } |
| inst[0] = (mov_pc & COND_MASK) | (BL - CONDITIONAL) | (diff & 0xffffff); |
| inst[1] = NOP; |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 1); |
| inst = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 2); |
| } |
| } |
| } else { |
| /* Get the position of the constant. */ |
| if (mov_pc & (1 << 23)) |
| ptr = inst + ((mov_pc & 0xfff) >> 2) + 2; |
| else |
| ptr = inst + 1; |
| |
| if (*inst != mov_pc) { |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + (!bl ? 1 : 2), 0); |
| } |
| inst[0] = mov_pc; |
| if (!bl) { |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 1); |
| inst = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 1); |
| } |
| } else { |
| inst[1] = BLX | RM(TMP_REG1); |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 1); |
| inst = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 2); |
| } |
| } |
| } |
| |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(ptr, ptr + 1, 0); |
| } |
| |
| *ptr = new_addr; |
| |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(ptr, ptr + 1, 1); |
| } |
| } |
| #else /* !SLJIT_CONFIG_ARM_V6 */ |
| sljit_ins *inst = (sljit_ins*)jump_ptr; |
| |
| SLJIT_UNUSED_ARG(executable_offset); |
| |
| SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT); |
| |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 0); |
| } |
| |
| inst[0] = MOVW | (inst[0] & 0xf000) | ((new_addr << 4) & 0xf0000) | (new_addr & 0xfff); |
| inst[1] = MOVT | (inst[1] & 0xf000) | ((new_addr >> 12) & 0xf0000) | ((new_addr >> 16) & 0xfff); |
| |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 1); |
| inst = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 2); |
| } |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| } |
| |
| static sljit_uw get_imm(sljit_uw imm); |
| static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 reg, sljit_uw imm); |
| static sljit_s32 emit_op_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg, sljit_sw argw, sljit_s32 tmp_reg); |
| |
| static SLJIT_INLINE void inline_set_const(sljit_uw addr, sljit_sw executable_offset, sljit_uw new_constant, sljit_s32 flush_cache) |
| { |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| sljit_ins *ptr = (sljit_ins*)addr; |
| sljit_ins *inst = (sljit_ins*)ptr[0]; |
| sljit_uw ldr_literal = ptr[1]; |
| sljit_uw src2; |
| |
| SLJIT_UNUSED_ARG(executable_offset); |
| |
| src2 = get_imm(new_constant); |
| if (src2) { |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 0); |
| } |
| |
| *inst = 0xe3a00000 | (ldr_literal & 0xf000) | src2; |
| |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 1); |
| inst = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 1); |
| } |
| return; |
| } |
| |
| src2 = get_imm(~new_constant); |
| if (src2) { |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 0); |
| } |
| |
| *inst = 0xe3e00000 | (ldr_literal & 0xf000) | src2; |
| |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 1); |
| inst = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 1); |
| } |
| return; |
| } |
| |
| if (ldr_literal & (1 << 23)) |
| ptr = inst + ((ldr_literal & 0xfff) >> 2) + 2; |
| else |
| ptr = inst + 1; |
| |
| if (*inst != ldr_literal) { |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 0); |
| } |
| |
| *inst = ldr_literal; |
| |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + 1, 1); |
| inst = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 1); |
| } |
| } |
| |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(ptr, ptr + 1, 0); |
| } |
| |
| *ptr = new_constant; |
| |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(ptr, ptr + 1, 1); |
| } |
| #else /* !SLJIT_CONFIG_ARM_V6 */ |
| sljit_ins *inst = (sljit_ins*)addr; |
| |
| SLJIT_UNUSED_ARG(executable_offset); |
| |
| SLJIT_ASSERT((inst[0] & 0xfff00000) == MOVW && (inst[1] & 0xfff00000) == MOVT); |
| |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 0); |
| } |
| |
| inst[0] = MOVW | (inst[0] & 0xf000) | ((new_constant << 4) & 0xf0000) | (new_constant & 0xfff); |
| inst[1] = MOVT | (inst[1] & 0xf000) | ((new_constant >> 12) & 0xf0000) | ((new_constant >> 16) & 0xfff); |
| |
| if (flush_cache) { |
| SLJIT_UPDATE_WX_FLAGS(inst, inst + 2, 1); |
| inst = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(inst, executable_offset); |
| SLJIT_CACHE_FLUSH(inst, inst + 2); |
| } |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE void* sljit_generate_code(struct sljit_compiler *compiler) |
| { |
| struct sljit_memory_fragment *buf; |
| sljit_ins *code; |
| sljit_ins *code_ptr; |
| sljit_ins *buf_ptr; |
| sljit_ins *buf_end; |
| sljit_uw size; |
| sljit_uw word_count; |
| sljit_uw next_addr; |
| sljit_sw executable_offset; |
| sljit_uw addr; |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| sljit_uw cpool_size; |
| sljit_uw cpool_skip_alignment; |
| sljit_uw cpool_current_index; |
| sljit_ins *cpool_start_address; |
| sljit_ins *last_pc_patch; |
| struct future_patch *first_patch; |
| #endif |
| |
| struct sljit_label *label; |
| struct sljit_jump *jump; |
| struct sljit_const *const_; |
| struct sljit_put_label *put_label; |
| |
| CHECK_ERROR_PTR(); |
| CHECK_PTR(check_sljit_generate_code(compiler)); |
| reverse_buf(compiler); |
| |
| /* Second code generation pass. */ |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| size = compiler->size + (compiler->patches << 1); |
| if (compiler->cpool_fill > 0) |
| size += compiler->cpool_fill + CONST_POOL_ALIGNMENT - 1; |
| #else /* !SLJIT_CONFIG_ARM_V6 */ |
| size = compiler->size; |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| code = (sljit_ins*)SLJIT_MALLOC_EXEC(size * sizeof(sljit_ins), compiler->exec_allocator_data); |
| PTR_FAIL_WITH_EXEC_IF(code); |
| buf = compiler->buf; |
| |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| cpool_size = 0; |
| cpool_skip_alignment = 0; |
| cpool_current_index = 0; |
| cpool_start_address = NULL; |
| first_patch = NULL; |
| last_pc_patch = code; |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| |
| code_ptr = code; |
| word_count = 0; |
| next_addr = 1; |
| executable_offset = SLJIT_EXEC_OFFSET(code); |
| |
| label = compiler->labels; |
| jump = compiler->jumps; |
| const_ = compiler->consts; |
| put_label = compiler->put_labels; |
| |
| if (label && label->size == 0) { |
| label->addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code, executable_offset); |
| label = label->next; |
| } |
| |
| do { |
| buf_ptr = (sljit_ins*)buf->memory; |
| buf_end = buf_ptr + (buf->used_size >> 2); |
| do { |
| word_count++; |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| if (cpool_size > 0) { |
| if (cpool_skip_alignment > 0) { |
| buf_ptr++; |
| cpool_skip_alignment--; |
| } |
| else { |
| if (SLJIT_UNLIKELY(resolve_const_pool_index(compiler, &first_patch, cpool_current_index, cpool_start_address, buf_ptr))) { |
| SLJIT_FREE_EXEC(code, compiler->exec_allocator_data); |
| compiler->error = SLJIT_ERR_ALLOC_FAILED; |
| return NULL; |
| } |
| buf_ptr++; |
| if (++cpool_current_index >= cpool_size) { |
| SLJIT_ASSERT(!first_patch); |
| cpool_size = 0; |
| if (label && label->size == word_count) { |
| /* Points after the current instruction. */ |
| label->addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset); |
| label->size = (sljit_uw)(code_ptr - code); |
| label = label->next; |
| |
| next_addr = compute_next_addr(label, jump, const_, put_label); |
| } |
| } |
| } |
| } |
| else if ((*buf_ptr & 0xff000000) != PUSH_POOL) { |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| *code_ptr = *buf_ptr++; |
| if (next_addr == word_count) { |
| SLJIT_ASSERT(!label || label->size >= word_count); |
| SLJIT_ASSERT(!jump || jump->addr >= word_count); |
| SLJIT_ASSERT(!const_ || const_->addr >= word_count); |
| SLJIT_ASSERT(!put_label || put_label->addr >= word_count); |
| |
| /* These structures are ordered by their address. */ |
| if (jump && jump->addr == word_count) { |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| if (detect_jump_type(jump, code_ptr, code, executable_offset)) |
| code_ptr--; |
| jump->addr = (sljit_uw)code_ptr; |
| #else /* !SLJIT_CONFIG_ARM_V6 */ |
| jump->addr = (sljit_uw)(code_ptr - 2); |
| if (detect_jump_type(jump, code_ptr, code, executable_offset)) |
| code_ptr -= 2; |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| jump = jump->next; |
| } |
| if (label && label->size == word_count) { |
| /* code_ptr can be affected above. */ |
| label->addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code_ptr + 1, executable_offset); |
| label->size = (sljit_uw)((code_ptr + 1) - code); |
| label = label->next; |
| } |
| if (const_ && const_->addr == word_count) { |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| const_->addr = (sljit_uw)code_ptr; |
| #else /* !SLJIT_CONFIG_ARM_V6 */ |
| const_->addr = (sljit_uw)(code_ptr - 1); |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| const_ = const_->next; |
| } |
| if (put_label && put_label->addr == word_count) { |
| SLJIT_ASSERT(put_label->label); |
| put_label->addr = (sljit_uw)code_ptr; |
| put_label = put_label->next; |
| } |
| next_addr = compute_next_addr(label, jump, const_, put_label); |
| } |
| code_ptr++; |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| } else { |
| /* Fortunately, no need to shift. */ |
| cpool_size = *buf_ptr++ & ~PUSH_POOL; |
| SLJIT_ASSERT(cpool_size > 0); |
| cpool_start_address = ALIGN_INSTRUCTION(code_ptr + 1); |
| cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, cpool_size); |
| if (cpool_current_index > 0) { |
| /* Unconditional branch. */ |
| *code_ptr = B | (((sljit_ins)(cpool_start_address - code_ptr) + cpool_current_index - 2) & ~PUSH_POOL); |
| code_ptr = (sljit_ins*)(cpool_start_address + cpool_current_index); |
| } |
| cpool_skip_alignment = CONST_POOL_ALIGNMENT - 1; |
| cpool_current_index = 0; |
| last_pc_patch = code_ptr; |
| } |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| } while (buf_ptr < buf_end); |
| buf = buf->next; |
| } while (buf); |
| |
| SLJIT_ASSERT(!label); |
| SLJIT_ASSERT(!jump); |
| SLJIT_ASSERT(!const_); |
| SLJIT_ASSERT(!put_label); |
| |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| SLJIT_ASSERT(cpool_size == 0); |
| if (compiler->cpool_fill > 0) { |
| cpool_start_address = ALIGN_INSTRUCTION(code_ptr); |
| cpool_current_index = patch_pc_relative_loads(last_pc_patch, code_ptr, cpool_start_address, compiler->cpool_fill); |
| if (cpool_current_index > 0) |
| code_ptr = (sljit_ins*)(cpool_start_address + cpool_current_index); |
| |
| buf_ptr = compiler->cpool; |
| buf_end = buf_ptr + compiler->cpool_fill; |
| cpool_current_index = 0; |
| while (buf_ptr < buf_end) { |
| if (SLJIT_UNLIKELY(resolve_const_pool_index(compiler, &first_patch, cpool_current_index, cpool_start_address, buf_ptr))) { |
| SLJIT_FREE_EXEC(code, compiler->exec_allocator_data); |
| compiler->error = SLJIT_ERR_ALLOC_FAILED; |
| return NULL; |
| } |
| buf_ptr++; |
| cpool_current_index++; |
| } |
| SLJIT_ASSERT(!first_patch); |
| } |
| #endif |
| |
| jump = compiler->jumps; |
| while (jump) { |
| buf_ptr = (sljit_ins*)jump->addr; |
| |
| if (jump->flags & PATCH_B) { |
| addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(buf_ptr + 2, executable_offset); |
| if (!(jump->flags & JUMP_ADDR)) { |
| SLJIT_ASSERT(jump->flags & JUMP_LABEL); |
| SLJIT_ASSERT((sljit_sw)(jump->u.label->addr - addr) <= 0x01ffffff && (sljit_sw)(jump->u.label->addr - addr) >= -0x02000000); |
| *buf_ptr |= ((jump->u.label->addr - addr) >> 2) & 0x00ffffff; |
| } |
| else { |
| SLJIT_ASSERT((sljit_sw)(jump->u.target - addr) <= 0x01ffffff && (sljit_sw)(jump->u.target - addr) >= -0x02000000); |
| *buf_ptr |= ((jump->u.target - addr) >> 2) & 0x00ffffff; |
| } |
| } |
| else if (jump->flags & SLJIT_REWRITABLE_JUMP) { |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| jump->addr = (sljit_uw)code_ptr; |
| code_ptr[0] = (sljit_ins)buf_ptr; |
| code_ptr[1] = *buf_ptr; |
| inline_set_jump_addr((sljit_uw)code_ptr, executable_offset, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0); |
| code_ptr += 2; |
| #else /* !SLJIT_CONFIG_ARM_V6 */ |
| inline_set_jump_addr((sljit_uw)buf_ptr, executable_offset, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0); |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| } else { |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| if (jump->flags & IS_BL) |
| buf_ptr--; |
| if (*buf_ptr & (1 << 23)) |
| buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2; |
| else |
| buf_ptr += 1; |
| *buf_ptr = (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target; |
| #else /* !SLJIT_CONFIG_ARM_V6 */ |
| inline_set_jump_addr((sljit_uw)buf_ptr, executable_offset, (jump->flags & JUMP_LABEL) ? jump->u.label->addr : jump->u.target, 0); |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| } |
| jump = jump->next; |
| } |
| |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| const_ = compiler->consts; |
| while (const_) { |
| buf_ptr = (sljit_ins*)const_->addr; |
| const_->addr = (sljit_uw)code_ptr; |
| |
| code_ptr[0] = (sljit_ins)buf_ptr; |
| code_ptr[1] = *buf_ptr; |
| if (*buf_ptr & (1 << 23)) |
| buf_ptr += ((*buf_ptr & 0xfff) >> 2) + 2; |
| else |
| buf_ptr += 1; |
| /* Set the value again (can be a simple constant). */ |
| inline_set_const((sljit_uw)code_ptr, executable_offset, *buf_ptr, 0); |
| code_ptr += 2; |
| |
| const_ = const_->next; |
| } |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| |
| put_label = compiler->put_labels; |
| while (put_label) { |
| addr = put_label->label->addr; |
| buf_ptr = (sljit_ins*)put_label->addr; |
| |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| SLJIT_ASSERT((buf_ptr[0] & 0xffff0000) == 0xe59f0000); |
| buf_ptr[((buf_ptr[0] & 0xfff) >> 2) + 2] = addr; |
| #else /* !SLJIT_CONFIG_ARM_V6 */ |
| SLJIT_ASSERT((buf_ptr[-1] & 0xfff00000) == MOVW && (buf_ptr[0] & 0xfff00000) == MOVT); |
| buf_ptr[-1] |= ((addr << 4) & 0xf0000) | (addr & 0xfff); |
| buf_ptr[0] |= ((addr >> 12) & 0xf0000) | ((addr >> 16) & 0xfff); |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| put_label = put_label->next; |
| } |
| |
| SLJIT_ASSERT(code_ptr - code <= (sljit_s32)size); |
| |
| compiler->error = SLJIT_ERR_COMPILED; |
| compiler->executable_offset = executable_offset; |
| compiler->executable_size = (sljit_uw)(code_ptr - code) * sizeof(sljit_uw); |
| |
| code = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(code, executable_offset); |
| code_ptr = (sljit_ins*)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset); |
| |
| SLJIT_CACHE_FLUSH(code, code_ptr); |
| SLJIT_UPDATE_WX_FLAGS(code, code_ptr, 1); |
| return code; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_has_cpu_feature(sljit_s32 feature_type) |
| { |
| switch (feature_type) { |
| case SLJIT_HAS_FPU: |
| case SLJIT_HAS_F64_AS_F32_PAIR: |
| #ifdef SLJIT_IS_FPU_AVAILABLE |
| return (SLJIT_IS_FPU_AVAILABLE) != 0; |
| #else |
| /* Available by default. */ |
| return 1; |
| #endif /* SLJIT_IS_FPU_AVAILABLE */ |
| case SLJIT_HAS_SIMD: |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| return 0; |
| #else |
| #ifdef SLJIT_IS_FPU_AVAILABLE |
| return (SLJIT_IS_FPU_AVAILABLE) != 0; |
| #else |
| /* Available by default. */ |
| return 1; |
| #endif /* SLJIT_IS_FPU_AVAILABLE */ |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| |
| case SLJIT_SIMD_REGS_ARE_PAIRS: |
| case SLJIT_HAS_CLZ: |
| case SLJIT_HAS_ROT: |
| case SLJIT_HAS_CMOV: |
| case SLJIT_HAS_REV: |
| case SLJIT_HAS_PREFETCH: |
| case SLJIT_HAS_COPY_F32: |
| case SLJIT_HAS_COPY_F64: |
| case SLJIT_HAS_ATOMIC: |
| return 1; |
| |
| case SLJIT_HAS_CTZ: |
| #if defined(SLJIT_CONFIG_ARM_V6) && SLJIT_CONFIG_ARM_V6 |
| return 2; |
| #else |
| return 1; |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| |
| default: |
| return 0; |
| } |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| /* Entry, exit */ |
| /* --------------------------------------------------------------------- */ |
| |
| /* Creates an index in data_transfer_insts array. */ |
| #define WORD_SIZE 0x00 |
| #define BYTE_SIZE 0x01 |
| #define HALF_SIZE 0x02 |
| #define PRELOAD 0x03 |
| #define SIGNED 0x04 |
| #define LOAD_DATA 0x08 |
| |
| /* Flag bits for emit_op. */ |
| #define ALLOW_IMM 0x10 |
| #define ALLOW_INV_IMM 0x20 |
| #define ALLOW_ANY_IMM (ALLOW_IMM | ALLOW_INV_IMM) |
| #define ALLOW_NEG_IMM 0x40 |
| #define ALLOW_DOUBLE_IMM 0x80 |
| |
| /* s/l - store/load (1 bit) |
| u/s - signed/unsigned (1 bit) |
| w/b/h/N - word/byte/half/NOT allowed (2 bit) |
| Storing signed and unsigned values are the same operations. */ |
| |
| static const sljit_ins data_transfer_insts[16] = { |
| /* s u w */ 0xe5000000 /* str */, |
| /* s u b */ 0xe5400000 /* strb */, |
| /* s u h */ 0xe10000b0 /* strh */, |
| /* s u N */ 0x00000000 /* not allowed */, |
| /* s s w */ 0xe5000000 /* str */, |
| /* s s b */ 0xe5400000 /* strb */, |
| /* s s h */ 0xe10000b0 /* strh */, |
| /* s s N */ 0x00000000 /* not allowed */, |
| |
| /* l u w */ 0xe5100000 /* ldr */, |
| /* l u b */ 0xe5500000 /* ldrb */, |
| /* l u h */ 0xe11000b0 /* ldrh */, |
| /* l u p */ 0xf5500000 /* preload */, |
| /* l s w */ 0xe5100000 /* ldr */, |
| /* l s b */ 0xe11000d0 /* ldrsb */, |
| /* l s h */ 0xe11000f0 /* ldrsh */, |
| /* l s N */ 0x00000000 /* not allowed */, |
| }; |
| |
| #define EMIT_DATA_TRANSFER(type, add, target_reg, base_reg, arg) \ |
| (data_transfer_insts[(type) & 0xf] | ((add) << 23) | RD(target_reg) | RN(base_reg) | (sljit_ins)(arg)) |
| |
| /* Normal ldr/str instruction. |
| Type2: ldrsb, ldrh, ldrsh */ |
| #define IS_TYPE1_TRANSFER(type) \ |
| (data_transfer_insts[(type) & 0xf] & 0x04000000) |
| #define TYPE2_TRANSFER_IMM(imm) \ |
| (((imm) & 0xf) | (((imm) & 0xf0) << 4) | (1 << 22)) |
| |
| #define EMIT_FPU_OPERATION(opcode, mode, dst, src1, src2) \ |
| ((sljit_ins)(opcode) | (sljit_ins)(mode) | VD(dst) | VM(src1) | VN(src2)) |
| |
| /* Flags for emit_op: */ |
| /* Arguments are swapped. */ |
| #define ARGS_SWAPPED 0x01 |
| /* Inverted immediate. */ |
| #define INV_IMM 0x02 |
| /* Source and destination is register. */ |
| #define MOVE_REG_CONV 0x04 |
| /* Unused return value. */ |
| #define UNUSED_RETURN 0x08 |
| /* SET_FLAGS must be (1 << 20) as it is also the value of S bit (can be used for optimization). */ |
| #define SET_FLAGS (1 << 20) |
| /* dst: reg |
| src1: reg |
| src2: reg or imm (if allowed) |
| SRC2_IMM must be (1 << 25) as it is also the value of I bit (can be used for optimization). */ |
| #define SRC2_IMM (1 << 25) |
| |
| static sljit_s32 emit_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 inp_flags, |
| sljit_s32 dst, sljit_sw dstw, |
| sljit_s32 src1, sljit_sw src1w, |
| sljit_s32 src2, sljit_sw src2w); |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compiler, |
| sljit_s32 options, sljit_s32 arg_types, sljit_s32 scratches, sljit_s32 saveds, |
| sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size) |
| { |
| sljit_uw imm, offset; |
| sljit_s32 i, tmp, size, word_arg_count; |
| sljit_s32 saved_arg_count = SLJIT_KEPT_SAVEDS_COUNT(options); |
| #ifdef __SOFTFP__ |
| sljit_u32 float_arg_count; |
| #else |
| sljit_u32 old_offset, f32_offset; |
| sljit_u32 remap[3]; |
| sljit_u32 *remap_ptr = remap; |
| #endif |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_enter(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size)); |
| set_emit_enter(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size); |
| |
| imm = 0; |
| |
| tmp = SLJIT_S0 - saveds; |
| for (i = SLJIT_S0 - saved_arg_count; i > tmp; i--) |
| imm |= (sljit_uw)1 << reg_map[i]; |
| |
| for (i = scratches; i >= SLJIT_FIRST_SAVED_REG; i--) |
| imm |= (sljit_uw)1 << reg_map[i]; |
| |
| SLJIT_ASSERT(reg_map[TMP_REG2] == 14); |
| |
| /* Push saved and temporary registers |
| multiple registers: stmdb sp!, {..., lr} |
| single register: str reg, [sp, #-4]! */ |
| if (imm != 0) |
| FAIL_IF(push_inst(compiler, PUSH | (1 << 14) | imm)); |
| else |
| FAIL_IF(push_inst(compiler, 0xe52d0004 | RD(TMP_REG2))); |
| |
| /* Stack must be aligned to 8 bytes: */ |
| size = GET_SAVED_REGISTERS_SIZE(scratches, saveds - saved_arg_count, 1); |
| |
| if (fsaveds > 0 || fscratches >= SLJIT_FIRST_SAVED_FLOAT_REG) { |
| if ((size & SSIZE_OF(sw)) != 0) { |
| FAIL_IF(push_inst(compiler, SUB | RD(SLJIT_SP) | RN(SLJIT_SP) | SRC2_IMM | sizeof(sljit_sw))); |
| size += SSIZE_OF(sw); |
| } |
| |
| if (fsaveds + fscratches >= SLJIT_NUMBER_OF_FLOAT_REGISTERS) { |
| FAIL_IF(push_inst(compiler, VPUSH | VD(SLJIT_FS0) | ((sljit_ins)SLJIT_NUMBER_OF_SAVED_FLOAT_REGISTERS << 1))); |
| } else { |
| if (fsaveds > 0) |
| FAIL_IF(push_inst(compiler, VPUSH | VD(SLJIT_FS0) | ((sljit_ins)fsaveds << 1))); |
| if (fscratches >= SLJIT_FIRST_SAVED_FLOAT_REG) |
| FAIL_IF(push_inst(compiler, VPUSH | VD(fscratches) | ((sljit_ins)(fscratches - (SLJIT_FIRST_SAVED_FLOAT_REG - 1)) << 1))); |
| } |
| } |
| |
| local_size = ((size + local_size + 0x7) & ~0x7) - size; |
| compiler->local_size = local_size; |
| |
| if (options & SLJIT_ENTER_REG_ARG) |
| arg_types = 0; |
| |
| arg_types >>= SLJIT_ARG_SHIFT; |
| word_arg_count = 0; |
| saved_arg_count = 0; |
| #ifdef __SOFTFP__ |
| SLJIT_COMPILE_ASSERT(SLJIT_FR0 == 1, float_register_index_start); |
| |
| offset = 0; |
| float_arg_count = 0; |
| |
| while (arg_types) { |
| switch (arg_types & SLJIT_ARG_MASK) { |
| case SLJIT_ARG_TYPE_F64: |
| if (offset & 0x7) |
| offset += sizeof(sljit_sw); |
| |
| if (offset < 4 * sizeof(sljit_sw)) |
| FAIL_IF(push_inst(compiler, VMOV2 | (offset << 10) | ((offset + sizeof(sljit_sw)) << 14) | float_arg_count)); |
| else |
| FAIL_IF(push_inst(compiler, VLDR_F32 | 0x800100 | RN(SLJIT_SP) |
| | (float_arg_count << 12) | ((offset + (sljit_ins)size - 4 * sizeof(sljit_sw)) >> 2))); |
| float_arg_count++; |
| offset += sizeof(sljit_f64) - sizeof(sljit_sw); |
| break; |
| case SLJIT_ARG_TYPE_F32: |
| if (offset < 4 * sizeof(sljit_sw)) |
| FAIL_IF(push_inst(compiler, VMOV | (float_arg_count << 16) | (offset << 10))); |
| else |
| FAIL_IF(push_inst(compiler, VLDR_F32 | 0x800000 | RN(SLJIT_SP) |
| | (float_arg_count << 12) | ((offset + (sljit_ins)size - 4 * sizeof(sljit_sw)) >> 2))); |
| float_arg_count++; |
| break; |
| default: |
| word_arg_count++; |
| |
| if (!(arg_types & SLJIT_ARG_TYPE_SCRATCH_REG)) { |
| tmp = SLJIT_S0 - saved_arg_count; |
| saved_arg_count++; |
| } else if (word_arg_count - 1 != (sljit_s32)(offset >> 2)) |
| tmp = word_arg_count; |
| else |
| break; |
| |
| if (offset < 4 * sizeof(sljit_sw)) |
| FAIL_IF(push_inst(compiler, MOV | RD(tmp) | (offset >> 2))); |
| else |
| FAIL_IF(push_inst(compiler, LDR | 0x800000 | RN(SLJIT_SP) | RD(tmp) | (offset + (sljit_ins)size - 4 * sizeof(sljit_sw)))); |
| break; |
| } |
| |
| offset += sizeof(sljit_sw); |
| arg_types >>= SLJIT_ARG_SHIFT; |
| } |
| |
| compiler->args_size = offset; |
| #else |
| offset = SLJIT_FR0; |
| old_offset = SLJIT_FR0; |
| f32_offset = 0; |
| |
| while (arg_types) { |
| switch (arg_types & SLJIT_ARG_MASK) { |
| case SLJIT_ARG_TYPE_F64: |
| if (offset != old_offset) |
| *remap_ptr++ = EMIT_FPU_OPERATION(VMOV_F32, SLJIT_32, offset, old_offset, 0); |
| old_offset++; |
| offset++; |
| break; |
| case SLJIT_ARG_TYPE_F32: |
| if (f32_offset != 0) { |
| *remap_ptr++ = EMIT_FPU_OPERATION(VMOV_F32, 0x20, offset, f32_offset, 0); |
| f32_offset = 0; |
| } else { |
| if (offset != old_offset) |
| *remap_ptr++ = EMIT_FPU_OPERATION(VMOV_F32, 0, offset, old_offset, 0); |
| f32_offset = old_offset; |
| old_offset++; |
| } |
| offset++; |
| break; |
| default: |
| if (!(arg_types & SLJIT_ARG_TYPE_SCRATCH_REG)) { |
| FAIL_IF(push_inst(compiler, MOV | RD(SLJIT_S0 - saved_arg_count) | RM(SLJIT_R0 + word_arg_count))); |
| saved_arg_count++; |
| } |
| |
| word_arg_count++; |
| break; |
| } |
| arg_types >>= SLJIT_ARG_SHIFT; |
| } |
| |
| SLJIT_ASSERT((sljit_uw)(remap_ptr - remap) <= sizeof(remap)); |
| |
| while (remap_ptr > remap) |
| FAIL_IF(push_inst(compiler, *(--remap_ptr))); |
| #endif |
| |
| if (local_size > 0) |
| FAIL_IF(emit_op(compiler, SLJIT_SUB, ALLOW_IMM | ALLOW_DOUBLE_IMM, SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, local_size)); |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *compiler, |
| sljit_s32 options, sljit_s32 arg_types, sljit_s32 scratches, sljit_s32 saveds, |
| sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size) |
| { |
| sljit_s32 size; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_set_context(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size)); |
| set_set_context(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size); |
| |
| size = GET_SAVED_REGISTERS_SIZE(scratches, saveds - SLJIT_KEPT_SAVEDS_COUNT(options), 1); |
| |
| /* Doubles are saved, so alignment is unaffected. */ |
| if ((size & SSIZE_OF(sw)) != 0 && (fsaveds > 0 || fscratches >= SLJIT_FIRST_SAVED_FLOAT_REG)) |
| size += SSIZE_OF(sw); |
| |
| compiler->local_size = ((size + local_size + 0x7) & ~0x7) - size; |
| return SLJIT_SUCCESS; |
| } |
| |
| static sljit_s32 emit_add_sp(struct sljit_compiler *compiler, sljit_uw imm) |
| { |
| sljit_uw imm2 = get_imm(imm); |
| |
| if (imm2 == 0) |
| return emit_op(compiler, SLJIT_ADD, ALLOW_IMM | ALLOW_DOUBLE_IMM, SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, (sljit_sw)imm); |
| |
| return push_inst(compiler, ADD | RD(SLJIT_SP) | RN(SLJIT_SP) | imm2); |
| } |
| |
| static sljit_s32 emit_stack_frame_release(struct sljit_compiler *compiler, sljit_s32 frame_size) |
| { |
| sljit_s32 local_size, fscratches, fsaveds, i, tmp; |
| sljit_s32 restored_reg = 0; |
| sljit_s32 lr_dst = TMP_PC; |
| sljit_uw reg_list = 0; |
| |
| SLJIT_ASSERT(reg_map[TMP_REG2] == 14 && frame_size <= 128); |
| |
| local_size = compiler->local_size; |
| fscratches = compiler->fscratches; |
| fsaveds = compiler->fsaveds; |
| |
| if (fsaveds > 0 || fscratches >= SLJIT_FIRST_SAVED_FLOAT_REG) { |
| if (local_size > 0) |
| FAIL_IF(emit_add_sp(compiler, (sljit_uw)local_size)); |
| |
| if (fsaveds + fscratches >= SLJIT_NUMBER_OF_FLOAT_REGISTERS) { |
| FAIL_IF(push_inst(compiler, VPOP | VD(SLJIT_FS0) | ((sljit_ins)SLJIT_NUMBER_OF_SAVED_FLOAT_REGISTERS << 1))); |
| } else { |
| if (fscratches >= SLJIT_FIRST_SAVED_FLOAT_REG) |
| FAIL_IF(push_inst(compiler, VPOP | VD(fscratches) | ((sljit_ins)(fscratches - (SLJIT_FIRST_SAVED_FLOAT_REG - 1)) << 1))); |
| if (fsaveds > 0) |
| FAIL_IF(push_inst(compiler, VPOP | VD(SLJIT_FS0) | ((sljit_ins)fsaveds << 1))); |
| } |
| |
| local_size = GET_SAVED_REGISTERS_SIZE(compiler->scratches, compiler->saveds, 1) & 0x7; |
| } |
| |
| if (frame_size < 0) { |
| lr_dst = TMP_REG2; |
| frame_size = 0; |
| } else if (frame_size > 0) { |
| SLJIT_ASSERT(frame_size == 1 || (frame_size & 0x7) == 0); |
| lr_dst = 0; |
| frame_size &= ~0x7; |
| } |
| |
| if (lr_dst != 0) |
| reg_list |= (sljit_uw)1 << reg_map[lr_dst]; |
| |
| tmp = SLJIT_S0 - compiler->saveds; |
| i = SLJIT_S0 - SLJIT_KEPT_SAVEDS_COUNT(compiler->options); |
| if (tmp < i) { |
| restored_reg = i; |
| do { |
| reg_list |= (sljit_uw)1 << reg_map[i]; |
| } while (--i > tmp); |
| } |
| |
| i = compiler->scratches; |
| if (i >= SLJIT_FIRST_SAVED_REG) { |
| restored_reg = i; |
| do { |
| reg_list |= (sljit_uw)1 << reg_map[i]; |
| } while (--i >= SLJIT_FIRST_SAVED_REG); |
| } |
| |
| if (lr_dst == TMP_REG2 && reg_list == 0) { |
| restored_reg = TMP_REG2; |
| lr_dst = 0; |
| } |
| |
| if (lr_dst == 0 && (reg_list & (reg_list - 1)) == 0) { |
| /* The local_size does not include the saved registers. */ |
| tmp = 0; |
| if (reg_list != 0) { |
| tmp = 2; |
| if (local_size <= 0xfff) { |
| if (local_size == 0) { |
| SLJIT_ASSERT(restored_reg != TMP_REG2); |
| if (frame_size == 0) |
| return push_inst(compiler, LDR_POST | RN(SLJIT_SP) | RD(restored_reg) | 0x800008); |
| if (frame_size > 2 * SSIZE_OF(sw)) |
| return push_inst(compiler, LDR_POST | RN(SLJIT_SP) | RD(restored_reg) | (sljit_ins)(frame_size - (2 * SSIZE_OF(sw)))); |
| } |
| |
| FAIL_IF(push_inst(compiler, LDR | 0x800000 | RN(SLJIT_SP) | RD(restored_reg) | (sljit_ins)local_size)); |
| tmp = 1; |
| } else if (frame_size == 0) { |
| frame_size = (restored_reg == TMP_REG2) ? SSIZE_OF(sw) : 2 * SSIZE_OF(sw); |
| tmp = 3; |
| } |
| |
| /* Place for the saved register. */ |
| if (restored_reg != TMP_REG2) |
| local_size += SSIZE_OF(sw); |
| } |
| |
| /* Place for the lr register. */ |
| local_size += SSIZE_OF(sw); |
| |
| if (frame_size > local_size) |
| FAIL_IF(push_inst(compiler, SUB | RD(SLJIT_SP) | RN(SLJIT_SP) | (1 << 25) | (sljit_ins)(frame_size - local_size))); |
| else if (frame_size < local_size) |
| FAIL_IF(emit_add_sp(compiler, (sljit_uw)(local_size - frame_size))); |
| |
| if (tmp <= 1) |
| return SLJIT_SUCCESS; |
| |
| if (tmp == 2) { |
| frame_size -= SSIZE_OF(sw); |
| if (restored_reg != TMP_REG2) |
| frame_size -= SSIZE_OF(sw); |
| |
| return push_inst(compiler, LDR | 0x800000 | RN(SLJIT_SP) | RD(restored_reg) | (sljit_ins)frame_size); |
| } |
| |
| tmp = (restored_reg == TMP_REG2) ? 0x800004 : 0x800008; |
| return push_inst(compiler, LDR_POST | RN(SLJIT_SP) | RD(restored_reg) | (sljit_ins)tmp); |
| } |
| |
| if (local_size > 0) |
| FAIL_IF(emit_add_sp(compiler, (sljit_uw)local_size)); |
| |
| /* Pop saved and temporary registers |
| multiple registers: ldmia sp!, {...} |
| single register: ldr reg, [sp], #4 */ |
| if ((reg_list & (reg_list - 1)) == 0) { |
| SLJIT_ASSERT(lr_dst != 0); |
| SLJIT_ASSERT(reg_list == (sljit_uw)1 << reg_map[lr_dst]); |
| |
| return push_inst(compiler, LDR_POST | RN(SLJIT_SP) | RD(lr_dst) | 0x800004); |
| } |
| |
| FAIL_IF(push_inst(compiler, POP | reg_list)); |
| |
| if (frame_size > 0) |
| return push_inst(compiler, SUB | RD(SLJIT_SP) | RN(SLJIT_SP) | (1 << 25) | ((sljit_ins)frame_size - sizeof(sljit_sw))); |
| |
| if (lr_dst != 0) |
| return SLJIT_SUCCESS; |
| |
| return push_inst(compiler, ADD | RD(SLJIT_SP) | RN(SLJIT_SP) | (1 << 25) | sizeof(sljit_sw)); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return_void(struct sljit_compiler *compiler) |
| { |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_return_void(compiler)); |
| |
| return emit_stack_frame_release(compiler, 0); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return_to(struct sljit_compiler *compiler, |
| sljit_s32 src, sljit_sw srcw) |
| { |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_return_to(compiler, src, srcw)); |
| |
| if (src & SLJIT_MEM) { |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG1, src, srcw, TMP_REG1)); |
| src = TMP_REG1; |
| srcw = 0; |
| } else if (src >= SLJIT_FIRST_SAVED_REG && src <= (SLJIT_S0 - SLJIT_KEPT_SAVEDS_COUNT(compiler->options))) { |
| FAIL_IF(push_inst(compiler, MOV | RD(TMP_REG1) | RM(src))); |
| src = TMP_REG1; |
| srcw = 0; |
| } |
| |
| FAIL_IF(emit_stack_frame_release(compiler, 1)); |
| |
| SLJIT_SKIP_CHECKS(compiler); |
| return sljit_emit_ijump(compiler, SLJIT_JUMP, src, srcw); |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| /* Operators */ |
| /* --------------------------------------------------------------------- */ |
| |
| static SLJIT_INLINE sljit_s32 emit_single_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 flags, |
| sljit_uw dst, sljit_uw src1, sljit_uw src2) |
| { |
| sljit_s32 is_masked; |
| sljit_uw shift_type; |
| |
| switch (op) { |
| case SLJIT_MOV: |
| SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED)); |
| if (dst != src2) { |
| if (src2 & SRC2_IMM) { |
| return push_inst(compiler, ((flags & INV_IMM) ? MVN : MOV) | RD(dst) | src2); |
| } |
| return push_inst(compiler, MOV | RD(dst) | RM(src2)); |
| } |
| return SLJIT_SUCCESS; |
| |
| case SLJIT_MOV_U8: |
| case SLJIT_MOV_S8: |
| SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED)); |
| if (flags & MOVE_REG_CONV) |
| return push_inst(compiler, (op == SLJIT_MOV_U8 ? UXTB : SXTB) | RD(dst) | RM(src2)); |
| |
| if (dst != src2) { |
| SLJIT_ASSERT(src2 & SRC2_IMM); |
| return push_inst(compiler, ((flags & INV_IMM) ? MVN : MOV) | RD(dst) | src2); |
| } |
| return SLJIT_SUCCESS; |
| |
| case SLJIT_MOV_U16: |
| case SLJIT_MOV_S16: |
| SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED)); |
| if (flags & MOVE_REG_CONV) |
| return push_inst(compiler, (op == SLJIT_MOV_U16 ? UXTH : SXTH) | RD(dst) | RM(src2)); |
| |
| if (dst != src2) { |
| SLJIT_ASSERT(src2 & SRC2_IMM); |
| return push_inst(compiler, ((flags & INV_IMM) ? MVN : MOV) | RD(dst) | src2); |
| } |
| return SLJIT_SUCCESS; |
| |
| case SLJIT_CLZ: |
| SLJIT_ASSERT(!(flags & INV_IMM) && !(src2 & SRC2_IMM)); |
| FAIL_IF(push_inst(compiler, CLZ | RD(dst) | RM(src2))); |
| return SLJIT_SUCCESS; |
| |
| case SLJIT_CTZ: |
| SLJIT_ASSERT(!(flags & INV_IMM) && !(src2 & SRC2_IMM)); |
| SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED)); |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| FAIL_IF(push_inst(compiler, RSB | SRC2_IMM | RD(TMP_REG1) | RN(src2) | 0)); |
| FAIL_IF(push_inst(compiler, AND | RD(TMP_REG2) | RN(src2) | RM(TMP_REG1))); |
| FAIL_IF(push_inst(compiler, CLZ | RD(dst) | RM(TMP_REG2))); |
| FAIL_IF(push_inst(compiler, CMP | SET_FLAGS | SRC2_IMM | RN(dst) | 32)); |
| return push_inst(compiler, (EOR ^ 0xf0000000) | SRC2_IMM | RD(dst) | RN(dst) | 0x1f); |
| #else /* !SLJIT_CONFIG_ARM_V6 */ |
| FAIL_IF(push_inst(compiler, RBIT | RD(dst) | RM(src2))); |
| return push_inst(compiler, CLZ | RD(dst) | RM(dst)); |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| |
| case SLJIT_REV: |
| case SLJIT_REV_U32: |
| case SLJIT_REV_S32: |
| SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED)); |
| return push_inst(compiler, REV | RD(dst) | RM(src2)); |
| |
| case SLJIT_REV_U16: |
| case SLJIT_REV_S16: |
| SLJIT_ASSERT(src1 == TMP_REG1 && !(flags & ARGS_SWAPPED) && src2 != TMP_REG1 && dst != TMP_REG1); |
| FAIL_IF(push_inst(compiler, REV16 | RD(dst) | RM(src2))); |
| if (dst == TMP_REG2 || (src2 == TMP_REG2 && op == SLJIT_REV_U16)) |
| return SLJIT_SUCCESS; |
| return push_inst(compiler, (op == SLJIT_REV_U16 ? UXTH : SXTH) | RD(dst) | RM(dst)); |
| case SLJIT_ADD: |
| SLJIT_ASSERT(!(flags & INV_IMM)); |
| |
| if ((flags & (UNUSED_RETURN | ARGS_SWAPPED)) == UNUSED_RETURN) |
| return push_inst(compiler, CMN | SET_FLAGS | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2))); |
| return push_inst(compiler, ADD | (flags & SET_FLAGS) | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2))); |
| |
| case SLJIT_ADDC: |
| SLJIT_ASSERT(!(flags & INV_IMM)); |
| return push_inst(compiler, ADC | (flags & SET_FLAGS) | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2))); |
| |
| case SLJIT_SUB: |
| SLJIT_ASSERT(!(flags & INV_IMM)); |
| |
| if ((flags & (UNUSED_RETURN | ARGS_SWAPPED)) == UNUSED_RETURN) |
| return push_inst(compiler, CMP | SET_FLAGS | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2))); |
| |
| return push_inst(compiler, (!(flags & ARGS_SWAPPED) ? SUB : RSB) | (flags & SET_FLAGS) |
| | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2))); |
| |
| case SLJIT_SUBC: |
| SLJIT_ASSERT(!(flags & INV_IMM)); |
| return push_inst(compiler, (!(flags & ARGS_SWAPPED) ? SBC : RSC) | (flags & SET_FLAGS) |
| | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2))); |
| |
| case SLJIT_MUL: |
| SLJIT_ASSERT(!(flags & INV_IMM)); |
| SLJIT_ASSERT(!(src2 & SRC2_IMM)); |
| compiler->status_flags_state = 0; |
| |
| if (!(flags & SET_FLAGS)) |
| return push_inst(compiler, MUL | RN(dst) | RM8(src2) | RM(src1)); |
| |
| FAIL_IF(push_inst(compiler, SMULL | RN(TMP_REG1) | RD(dst) | RM8(src2) | RM(src1))); |
| |
| /* cmp TMP_REG1, dst asr #31. */ |
| return push_inst(compiler, CMP | SET_FLAGS | RN(TMP_REG1) | RM(dst) | 0xfc0); |
| |
| case SLJIT_AND: |
| if ((flags & (UNUSED_RETURN | INV_IMM)) == UNUSED_RETURN) |
| return push_inst(compiler, TST | SET_FLAGS | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2))); |
| return push_inst(compiler, (!(flags & INV_IMM) ? AND : BIC) | (flags & SET_FLAGS) |
| | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2))); |
| |
| case SLJIT_OR: |
| SLJIT_ASSERT(!(flags & INV_IMM)); |
| return push_inst(compiler, ORR | (flags & SET_FLAGS) | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2))); |
| |
| case SLJIT_XOR: |
| if (flags & INV_IMM) { |
| SLJIT_ASSERT(src2 == SRC2_IMM); |
| return push_inst(compiler, MVN | (flags & SET_FLAGS) | RD(dst) | RM(src1)); |
| } |
| return push_inst(compiler, EOR | (flags & SET_FLAGS) | RD(dst) | RN(src1) | ((src2 & SRC2_IMM) ? src2 : RM(src2))); |
| |
| case SLJIT_SHL: |
| case SLJIT_MSHL: |
| shift_type = 0; |
| is_masked = op == SLJIT_MSHL; |
| break; |
| |
| case SLJIT_LSHR: |
| case SLJIT_MLSHR: |
| shift_type = 1; |
| is_masked = op == SLJIT_MLSHR; |
| break; |
| |
| case SLJIT_ASHR: |
| case SLJIT_MASHR: |
| shift_type = 2; |
| is_masked = op == SLJIT_MASHR; |
| break; |
| |
| case SLJIT_ROTL: |
| if (compiler->shift_imm == 0x20) { |
| FAIL_IF(push_inst(compiler, RSB | SRC2_IMM | RD(TMP_REG2) | RN(src2) | 0)); |
| src2 = TMP_REG2; |
| } else |
| compiler->shift_imm = (sljit_uw)(-(sljit_sw)compiler->shift_imm) & 0x1f; |
| /* fallthrough */ |
| |
| case SLJIT_ROTR: |
| shift_type = 3; |
| is_masked = 0; |
| break; |
| |
| default: |
| SLJIT_UNREACHABLE(); |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_ASSERT(!(flags & ARGS_SWAPPED) && !(flags & INV_IMM) && !(src2 & SRC2_IMM)); |
| |
| if (compiler->shift_imm != 0x20) { |
| SLJIT_ASSERT(src1 == TMP_REG1); |
| |
| if (compiler->shift_imm != 0) |
| return push_inst(compiler, MOV | (flags & SET_FLAGS) | |
| RD(dst) | (compiler->shift_imm << 7) | (shift_type << 5) | RM(src2)); |
| return push_inst(compiler, MOV | (flags & SET_FLAGS) | RD(dst) | RM(src2)); |
| } |
| |
| SLJIT_ASSERT(src1 != TMP_REG2); |
| |
| if (is_masked) { |
| FAIL_IF(push_inst(compiler, AND | RD(TMP_REG2) | RN(src2) | SRC2_IMM | 0x1f)); |
| src2 = TMP_REG2; |
| } |
| |
| return push_inst(compiler, MOV | (flags & SET_FLAGS) | RD(dst) |
| | RM8(src2) | (sljit_ins)(shift_type << 5) | 0x10 | RM(src1)); |
| } |
| |
| #undef EMIT_SHIFT_INS_AND_RETURN |
| |
| /* Tests whether the immediate can be stored in the 12 bit imm field. |
| Returns with 0 if not possible. */ |
| static sljit_uw get_imm(sljit_uw imm) |
| { |
| sljit_u32 rol; |
| |
| if (imm <= 0xff) |
| return SRC2_IMM | imm; |
| |
| if (!(imm & 0xff000000)) { |
| imm <<= 8; |
| rol = 8; |
| } else { |
| imm = (imm << 24) | (imm >> 8); |
| rol = 0; |
| } |
| |
| if (!(imm & 0xff000000)) { |
| imm <<= 8; |
| rol += 4; |
| } |
| |
| if (!(imm & 0xf0000000)) { |
| imm <<= 4; |
| rol += 2; |
| } |
| |
| if (!(imm & 0xc0000000)) { |
| imm <<= 2; |
| rol += 1; |
| } |
| |
| if (!(imm & 0x00ffffff)) |
| return SRC2_IMM | (imm >> 24) | (rol << 8); |
| return 0; |
| } |
| |
| static sljit_uw compute_imm(sljit_uw imm, sljit_uw* imm2) |
| { |
| sljit_uw mask; |
| sljit_uw imm1; |
| sljit_uw rol; |
| |
| /* Step1: Search a zero byte (8 continous zero bit). */ |
| mask = 0xff000000; |
| rol = 8; |
| while (1) { |
| if (!(imm & mask)) { |
| /* Rol imm by rol. */ |
| imm = (imm << rol) | (imm >> (32 - rol)); |
| /* Calculate arm rol. */ |
| rol = 4 + (rol >> 1); |
| break; |
| } |
| |
| rol += 2; |
| mask >>= 2; |
| if (mask & 0x3) { |
| /* rol by 8. */ |
| imm = (imm << 8) | (imm >> 24); |
| mask = 0xff00; |
| rol = 24; |
| while (1) { |
| if (!(imm & mask)) { |
| /* Rol imm by rol. */ |
| imm = (imm << rol) | (imm >> (32 - rol)); |
| /* Calculate arm rol. */ |
| rol = (rol >> 1) - 8; |
| break; |
| } |
| rol += 2; |
| mask >>= 2; |
| if (mask & 0x3) |
| return 0; |
| } |
| break; |
| } |
| } |
| |
| /* The low 8 bit must be zero. */ |
| SLJIT_ASSERT(!(imm & 0xff)); |
| |
| if (!(imm & 0xff000000)) { |
| imm1 = SRC2_IMM | ((imm >> 16) & 0xff) | (((rol + 4) & 0xf) << 8); |
| *imm2 = SRC2_IMM | ((imm >> 8) & 0xff) | (((rol + 8) & 0xf) << 8); |
| } else if (imm & 0xc0000000) { |
| imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8); |
| imm <<= 8; |
| rol += 4; |
| |
| if (!(imm & 0xff000000)) { |
| imm <<= 8; |
| rol += 4; |
| } |
| |
| if (!(imm & 0xf0000000)) { |
| imm <<= 4; |
| rol += 2; |
| } |
| |
| if (!(imm & 0xc0000000)) { |
| imm <<= 2; |
| rol += 1; |
| } |
| |
| if (!(imm & 0x00ffffff)) |
| *imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8); |
| else |
| return 0; |
| } else { |
| if (!(imm & 0xf0000000)) { |
| imm <<= 4; |
| rol += 2; |
| } |
| |
| if (!(imm & 0xc0000000)) { |
| imm <<= 2; |
| rol += 1; |
| } |
| |
| imm1 = SRC2_IMM | ((imm >> 24) & 0xff) | ((rol & 0xf) << 8); |
| imm <<= 8; |
| rol += 4; |
| |
| if (!(imm & 0xf0000000)) { |
| imm <<= 4; |
| rol += 2; |
| } |
| |
| if (!(imm & 0xc0000000)) { |
| imm <<= 2; |
| rol += 1; |
| } |
| |
| if (!(imm & 0x00ffffff)) |
| *imm2 = SRC2_IMM | (imm >> 24) | ((rol & 0xf) << 8); |
| else |
| return 0; |
| } |
| |
| return imm1; |
| } |
| |
| static sljit_s32 load_immediate(struct sljit_compiler *compiler, sljit_s32 reg, sljit_uw imm) |
| { |
| sljit_uw tmp; |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| sljit_uw imm1, imm2; |
| #else /* !SLJIT_CONFIG_ARM_V6 */ |
| if (!(imm & ~(sljit_uw)0xffff)) |
| return push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff)); |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| |
| /* Create imm by 1 inst. */ |
| tmp = get_imm(imm); |
| if (tmp) |
| return push_inst(compiler, MOV | RD(reg) | tmp); |
| |
| tmp = get_imm(~imm); |
| if (tmp) |
| return push_inst(compiler, MVN | RD(reg) | tmp); |
| |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| /* Create imm by 2 inst. */ |
| imm1 = compute_imm(imm, &imm2); |
| if (imm1 != 0) { |
| FAIL_IF(push_inst(compiler, MOV | RD(reg) | imm1)); |
| return push_inst(compiler, ORR | RD(reg) | RN(reg) | imm2); |
| } |
| |
| imm1 = compute_imm(~imm, &imm2); |
| if (imm1 != 0) { |
| FAIL_IF(push_inst(compiler, MVN | RD(reg) | imm1)); |
| return push_inst(compiler, BIC | RD(reg) | RN(reg) | imm2); |
| } |
| |
| /* Load integer. */ |
| return push_inst_with_literal(compiler, EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1, reg, TMP_PC, 0), imm); |
| #else /* !SLJIT_CONFIG_ARM_V6 */ |
| FAIL_IF(push_inst(compiler, MOVW | RD(reg) | ((imm << 4) & 0xf0000) | (imm & 0xfff))); |
| if (imm <= 0xffff) |
| return SLJIT_SUCCESS; |
| return push_inst(compiler, MOVT | RD(reg) | ((imm >> 12) & 0xf0000) | ((imm >> 16) & 0xfff)); |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| } |
| |
| static sljit_s32 emit_op_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, |
| sljit_s32 arg, sljit_sw argw, sljit_s32 tmp_reg) |
| { |
| sljit_uw imm, offset_reg, tmp; |
| sljit_sw mask = IS_TYPE1_TRANSFER(flags) ? 0xfff : 0xff; |
| sljit_sw sign = IS_TYPE1_TRANSFER(flags) ? 0x1000 : 0x100; |
| |
| SLJIT_ASSERT(arg & SLJIT_MEM); |
| SLJIT_ASSERT((arg & REG_MASK) != tmp_reg || (arg == SLJIT_MEM1(tmp_reg) && argw >= -mask && argw <= mask)); |
| |
| if (SLJIT_UNLIKELY(!(arg & REG_MASK))) { |
| tmp = (sljit_uw)(argw & (sign | mask)); |
| tmp = (sljit_uw)((argw + (tmp <= (sljit_uw)sign ? 0 : sign)) & ~mask); |
| |
| FAIL_IF(load_immediate(compiler, tmp_reg, tmp)); |
| |
| argw -= (sljit_sw)tmp; |
| tmp = 1; |
| |
| if (argw < 0) { |
| argw = -argw; |
| tmp = 0; |
| } |
| |
| return push_inst(compiler, EMIT_DATA_TRANSFER(flags, tmp, reg, tmp_reg, |
| (mask == 0xff) ? TYPE2_TRANSFER_IMM(argw) : argw)); |
| } |
| |
| if (arg & OFFS_REG_MASK) { |
| offset_reg = OFFS_REG(arg); |
| arg &= REG_MASK; |
| argw &= 0x3; |
| |
| if (argw != 0 && (mask == 0xff)) { |
| FAIL_IF(push_inst(compiler, ADD | RD(tmp_reg) | RN(arg) | RM(offset_reg) | ((sljit_ins)argw << 7))); |
| return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 1, reg, tmp_reg, TYPE2_TRANSFER_IMM(0))); |
| } |
| |
| /* Bit 25: RM is offset. */ |
| return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 1, reg, arg, |
| RM(offset_reg) | (mask == 0xff ? 0 : (1 << 25)) | ((sljit_ins)argw << 7))); |
| } |
| |
| arg &= REG_MASK; |
| |
| if (argw > mask) { |
| tmp = (sljit_uw)(argw & (sign | mask)); |
| tmp = (sljit_uw)((argw + (tmp <= (sljit_uw)sign ? 0 : sign)) & ~mask); |
| imm = get_imm(tmp); |
| |
| if (imm) { |
| FAIL_IF(push_inst(compiler, ADD | RD(tmp_reg) | RN(arg) | imm)); |
| argw -= (sljit_sw)tmp; |
| arg = tmp_reg; |
| |
| SLJIT_ASSERT(argw >= -mask && argw <= mask); |
| } |
| } else if (argw < -mask) { |
| tmp = (sljit_uw)(-argw & (sign | mask)); |
| tmp = (sljit_uw)((-argw + (tmp <= (sljit_uw)sign ? 0 : sign)) & ~mask); |
| imm = get_imm(tmp); |
| |
| if (imm) { |
| FAIL_IF(push_inst(compiler, SUB | RD(tmp_reg) | RN(arg) | imm)); |
| argw += (sljit_sw)tmp; |
| arg = tmp_reg; |
| |
| SLJIT_ASSERT(argw >= -mask && argw <= mask); |
| } |
| } |
| |
| if (argw <= mask && argw >= -mask) { |
| if (argw >= 0) { |
| if (mask == 0xff) |
| argw = TYPE2_TRANSFER_IMM(argw); |
| return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 1, reg, arg, argw)); |
| } |
| |
| argw = -argw; |
| |
| if (mask == 0xff) |
| argw = TYPE2_TRANSFER_IMM(argw); |
| |
| return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 0, reg, arg, argw)); |
| } |
| |
| FAIL_IF(load_immediate(compiler, tmp_reg, (sljit_uw)argw)); |
| return push_inst(compiler, EMIT_DATA_TRANSFER(flags, 1, reg, arg, |
| RM(tmp_reg) | (mask == 0xff ? 0 : (1 << 25)))); |
| } |
| |
| static sljit_s32 emit_op(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 inp_flags, |
| sljit_s32 dst, sljit_sw dstw, |
| sljit_s32 src1, sljit_sw src1w, |
| sljit_s32 src2, sljit_sw src2w) |
| { |
| /* src1 is reg or TMP_REG1 |
| src2 is reg, TMP_REG2, or imm |
| result goes to TMP_REG2, so put result can use TMP_REG1. */ |
| |
| /* We prefers register and simple consts. */ |
| sljit_s32 dst_reg; |
| sljit_s32 src1_reg = 0; |
| sljit_s32 src2_reg = 0; |
| sljit_s32 flags = HAS_FLAGS(op) ? SET_FLAGS : 0; |
| sljit_s32 neg_op = 0; |
| sljit_u32 imm2; |
| |
| op = GET_OPCODE(op); |
| |
| if (flags & SET_FLAGS) |
| inp_flags &= ~ALLOW_DOUBLE_IMM; |
| |
| if (dst == TMP_REG2) |
| flags |= UNUSED_RETURN; |
| |
| SLJIT_ASSERT(!(inp_flags & ALLOW_INV_IMM) || (inp_flags & ALLOW_IMM)); |
| |
| if (inp_flags & ALLOW_NEG_IMM) { |
| switch (op) { |
| case SLJIT_ADD: |
| compiler->status_flags_state = SLJIT_CURRENT_FLAGS_ADD; |
| neg_op = SLJIT_SUB; |
| break; |
| case SLJIT_ADDC: |
| compiler->status_flags_state = SLJIT_CURRENT_FLAGS_ADD; |
| neg_op = SLJIT_SUBC; |
| break; |
| case SLJIT_SUB: |
| compiler->status_flags_state = SLJIT_CURRENT_FLAGS_SUB; |
| neg_op = SLJIT_ADD; |
| break; |
| case SLJIT_SUBC: |
| compiler->status_flags_state = SLJIT_CURRENT_FLAGS_SUB; |
| neg_op = SLJIT_ADDC; |
| break; |
| } |
| } |
| |
| do { |
| if (!(inp_flags & ALLOW_IMM)) |
| break; |
| |
| if (src2 == SLJIT_IMM) { |
| src2_reg = (sljit_s32)get_imm((sljit_uw)src2w); |
| if (src2_reg) |
| break; |
| |
| if (inp_flags & ALLOW_INV_IMM) { |
| src2_reg = (sljit_s32)get_imm(~(sljit_uw)src2w); |
| if (src2_reg) { |
| flags |= INV_IMM; |
| break; |
| } |
| } |
| |
| if (neg_op != 0) { |
| src2_reg = (sljit_s32)get_imm((neg_op == SLJIT_ADD || neg_op == SLJIT_SUB) ? (sljit_uw)-src2w : ~(sljit_uw)src2w); |
| if (src2_reg) { |
| op = neg_op | GET_ALL_FLAGS(op); |
| break; |
| } |
| } |
| } |
| |
| if (src1 == SLJIT_IMM) { |
| src2_reg = (sljit_s32)get_imm((sljit_uw)src1w); |
| if (src2_reg) { |
| flags |= ARGS_SWAPPED; |
| src1 = src2; |
| src1w = src2w; |
| break; |
| } |
| |
| if (inp_flags & ALLOW_INV_IMM) { |
| src2_reg = (sljit_s32)get_imm(~(sljit_uw)src1w); |
| if (src2_reg) { |
| flags |= ARGS_SWAPPED | INV_IMM; |
| src1 = src2; |
| src1w = src2w; |
| break; |
| } |
| } |
| |
| if (neg_op >= SLJIT_SUB) { |
| /* Note: additive operation (commutative). */ |
| SLJIT_ASSERT(op == SLJIT_ADD || op == SLJIT_ADDC); |
| |
| src2_reg = (sljit_s32)get_imm((sljit_uw)-src1w); |
| if (src2_reg) { |
| src1 = src2; |
| src1w = src2w; |
| op = neg_op | GET_ALL_FLAGS(op); |
| break; |
| } |
| } |
| } |
| } while(0); |
| |
| /* Source 1. */ |
| if (FAST_IS_REG(src1)) |
| src1_reg = src1; |
| else if (src1 & SLJIT_MEM) { |
| FAIL_IF(emit_op_mem(compiler, inp_flags | LOAD_DATA, TMP_REG1, src1, src1w, TMP_REG1)); |
| src1_reg = TMP_REG1; |
| } else if (!(inp_flags & ALLOW_DOUBLE_IMM) || src2_reg != 0 || op == SLJIT_SUB || op == SLJIT_SUBC) { |
| FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_uw)src1w)); |
| src1_reg = TMP_REG1; |
| } |
| |
| /* Destination. */ |
| dst_reg = FAST_IS_REG(dst) ? dst : TMP_REG2; |
| |
| if (op <= SLJIT_MOV_P) { |
| if (dst & SLJIT_MEM) { |
| if (inp_flags & BYTE_SIZE) |
| inp_flags &= ~SIGNED; |
| |
| if (FAST_IS_REG(src2)) |
| return emit_op_mem(compiler, inp_flags, src2, dst, dstw, TMP_REG2); |
| } |
| |
| if (FAST_IS_REG(src2) && dst_reg != TMP_REG2) |
| flags |= MOVE_REG_CONV; |
| } |
| |
| /* Source 2. */ |
| if (src2_reg == 0) { |
| src2_reg = (op <= SLJIT_MOV_P) ? dst_reg : TMP_REG2; |
| |
| if (FAST_IS_REG(src2)) |
| src2_reg = src2; |
| else if (src2 & SLJIT_MEM) |
| FAIL_IF(emit_op_mem(compiler, inp_flags | LOAD_DATA, src2_reg, src2, src2w, TMP_REG2)); |
| else if (!(inp_flags & ALLOW_DOUBLE_IMM)) |
| FAIL_IF(load_immediate(compiler, src2_reg, (sljit_uw)src2w)); |
| else { |
| SLJIT_ASSERT(!(flags & SET_FLAGS)); |
| |
| if (src1_reg == 0) { |
| FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_uw)src1w)); |
| src1_reg = TMP_REG1; |
| } |
| |
| src2_reg = (sljit_s32)compute_imm((sljit_uw)src2w, &imm2); |
| |
| if (src2_reg == 0 && neg_op != 0) { |
| src2_reg = (sljit_s32)compute_imm((sljit_uw)-src2w, &imm2); |
| if (src2_reg != 0) |
| op = neg_op; |
| } |
| |
| if (src2_reg == 0) { |
| FAIL_IF(load_immediate(compiler, TMP_REG2, (sljit_uw)src2w)); |
| src2_reg = TMP_REG2; |
| } else { |
| FAIL_IF(emit_single_op(compiler, op, flags, (sljit_uw)dst_reg, (sljit_uw)src1_reg, (sljit_uw)src2_reg)); |
| src1_reg = dst_reg; |
| src2_reg = (sljit_s32)imm2; |
| |
| if (op == SLJIT_ADDC) |
| op = SLJIT_ADD; |
| else if (op == SLJIT_SUBC) |
| op = SLJIT_SUB; |
| } |
| } |
| } |
| |
| if (src1_reg == 0) { |
| SLJIT_ASSERT((inp_flags & ALLOW_DOUBLE_IMM) && !(flags & SET_FLAGS)); |
| |
| src1_reg = (sljit_s32)compute_imm((sljit_uw)src1w, &imm2); |
| |
| if (src1_reg == 0 && neg_op != 0) { |
| src1_reg = (sljit_s32)compute_imm((sljit_uw)-src1w, &imm2); |
| if (src1_reg != 0) |
| op = neg_op; |
| } |
| |
| if (src1_reg == 0) { |
| FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_uw)src1w)); |
| src1_reg = TMP_REG1; |
| } else { |
| FAIL_IF(emit_single_op(compiler, op, flags, (sljit_uw)dst_reg, (sljit_uw)src2_reg, (sljit_uw)src1_reg)); |
| src1_reg = dst_reg; |
| src2_reg = (sljit_s32)imm2; |
| |
| if (op == SLJIT_ADDC) |
| op = SLJIT_ADD; |
| } |
| } |
| |
| FAIL_IF(emit_single_op(compiler, op, flags, (sljit_uw)dst_reg, (sljit_uw)src1_reg, (sljit_uw)src2_reg)); |
| |
| if (!(dst & SLJIT_MEM)) |
| return SLJIT_SUCCESS; |
| |
| return emit_op_mem(compiler, inp_flags, dst_reg, dst, dstw, TMP_REG1); |
| } |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #if defined(__GNUC__) |
| extern unsigned int __aeabi_uidivmod(unsigned int numerator, unsigned int denominator); |
| extern int __aeabi_idivmod(int numerator, int denominator); |
| #else |
| #error "Software divmod functions are needed" |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op0(struct sljit_compiler *compiler, sljit_s32 op) |
| { |
| sljit_uw saved_reg_list[3]; |
| sljit_sw saved_reg_count; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_op0(compiler, op)); |
| |
| op = GET_OPCODE(op); |
| switch (op) { |
| case SLJIT_BREAKPOINT: |
| FAIL_IF(push_inst(compiler, BKPT)); |
| break; |
| case SLJIT_NOP: |
| FAIL_IF(push_inst(compiler, NOP)); |
| break; |
| case SLJIT_LMUL_UW: |
| case SLJIT_LMUL_SW: |
| return push_inst(compiler, (op == SLJIT_LMUL_UW ? UMULL : SMULL) |
| | RN(SLJIT_R1) | RD(SLJIT_R0) | RM8(SLJIT_R0) | RM(SLJIT_R1)); |
| case SLJIT_DIVMOD_UW: |
| case SLJIT_DIVMOD_SW: |
| case SLJIT_DIV_UW: |
| case SLJIT_DIV_SW: |
| SLJIT_COMPILE_ASSERT((SLJIT_DIVMOD_UW & 0x2) == 0 && SLJIT_DIV_UW - 0x2 == SLJIT_DIVMOD_UW, bad_div_opcode_assignments); |
| SLJIT_ASSERT(reg_map[2] == 1 && reg_map[3] == 2 && reg_map[4] == 3); |
| |
| saved_reg_count = 0; |
| if (compiler->scratches >= 4) |
| saved_reg_list[saved_reg_count++] = 3; |
| if (compiler->scratches >= 3) |
| saved_reg_list[saved_reg_count++] = 2; |
| if (op >= SLJIT_DIV_UW) |
| saved_reg_list[saved_reg_count++] = 1; |
| |
| if (saved_reg_count > 0) { |
| FAIL_IF(push_inst(compiler, STR | 0x2d0000 | (saved_reg_count >= 3 ? 16 : 8) |
| | (saved_reg_list[0] << 12) /* str rX, [sp, #-8/-16]! */)); |
| if (saved_reg_count >= 2) { |
| SLJIT_ASSERT(saved_reg_list[1] < 8); |
| FAIL_IF(push_inst(compiler, STR | 0x8d0004 | (saved_reg_list[1] << 12) /* str rX, [sp, #4] */)); |
| } |
| if (saved_reg_count >= 3) { |
| SLJIT_ASSERT(saved_reg_list[2] < 8); |
| FAIL_IF(push_inst(compiler, STR | 0x8d0008 | (saved_reg_list[2] << 12) /* str rX, [sp, #8] */)); |
| } |
| } |
| |
| #if defined(__GNUC__) |
| FAIL_IF(sljit_emit_ijump(compiler, SLJIT_FAST_CALL, SLJIT_IMM, |
| ((op | 0x2) == SLJIT_DIV_UW ? SLJIT_FUNC_ADDR(__aeabi_uidivmod) : SLJIT_FUNC_ADDR(__aeabi_idivmod)))); |
| #else |
| #error "Software divmod functions are needed" |
| #endif |
| |
| if (saved_reg_count > 0) { |
| if (saved_reg_count >= 3) { |
| SLJIT_ASSERT(saved_reg_list[2] < 8); |
| FAIL_IF(push_inst(compiler, LDR | 0x8d0008 | (saved_reg_list[2] << 12) /* ldr rX, [sp, #8] */)); |
| } |
| if (saved_reg_count >= 2) { |
| SLJIT_ASSERT(saved_reg_list[1] < 8); |
| FAIL_IF(push_inst(compiler, LDR | 0x8d0004 | (saved_reg_list[1] << 12) /* ldr rX, [sp, #4] */)); |
| } |
| return push_inst(compiler, (LDR ^ (1 << 24)) | 0x8d0000 | (sljit_ins)(saved_reg_count >= 3 ? 16 : 8) |
| | (saved_reg_list[0] << 12) /* ldr rX, [sp], #8/16 */); |
| } |
| return SLJIT_SUCCESS; |
| case SLJIT_ENDBR: |
| case SLJIT_SKIP_FRAMES_BEFORE_RETURN: |
| return SLJIT_SUCCESS; |
| } |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op1(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 dst, sljit_sw dstw, |
| sljit_s32 src, sljit_sw srcw) |
| { |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_op1(compiler, op, dst, dstw, src, srcw)); |
| ADJUST_LOCAL_OFFSET(dst, dstw); |
| ADJUST_LOCAL_OFFSET(src, srcw); |
| |
| switch (GET_OPCODE(op)) { |
| case SLJIT_MOV: |
| case SLJIT_MOV_U32: |
| case SLJIT_MOV_S32: |
| case SLJIT_MOV32: |
| case SLJIT_MOV_P: |
| return emit_op(compiler, SLJIT_MOV, ALLOW_ANY_IMM, dst, dstw, TMP_REG1, 0, src, srcw); |
| |
| case SLJIT_MOV_U8: |
| return emit_op(compiler, SLJIT_MOV_U8, ALLOW_ANY_IMM | BYTE_SIZE, dst, dstw, TMP_REG1, 0, src, (src == SLJIT_IMM) ? (sljit_u8)srcw : srcw); |
| |
| case SLJIT_MOV_S8: |
| return emit_op(compiler, SLJIT_MOV_S8, ALLOW_ANY_IMM | SIGNED | BYTE_SIZE, dst, dstw, TMP_REG1, 0, src, (src == SLJIT_IMM) ? (sljit_s8)srcw : srcw); |
| |
| case SLJIT_MOV_U16: |
| return emit_op(compiler, SLJIT_MOV_U16, ALLOW_ANY_IMM | HALF_SIZE, dst, dstw, TMP_REG1, 0, src, (src == SLJIT_IMM) ? (sljit_u16)srcw : srcw); |
| |
| case SLJIT_MOV_S16: |
| return emit_op(compiler, SLJIT_MOV_S16, ALLOW_ANY_IMM | SIGNED | HALF_SIZE, dst, dstw, TMP_REG1, 0, src, (src == SLJIT_IMM) ? (sljit_s16)srcw : srcw); |
| |
| case SLJIT_CLZ: |
| case SLJIT_CTZ: |
| case SLJIT_REV: |
| case SLJIT_REV_U32: |
| case SLJIT_REV_S32: |
| return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src, srcw); |
| |
| case SLJIT_REV_U16: |
| case SLJIT_REV_S16: |
| return emit_op(compiler, op, HALF_SIZE, dst, dstw, TMP_REG1, 0, src, srcw); |
| } |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 dst, sljit_sw dstw, |
| sljit_s32 src1, sljit_sw src1w, |
| sljit_s32 src2, sljit_sw src2w) |
| { |
| sljit_s32 inp_flags; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_op2(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w)); |
| ADJUST_LOCAL_OFFSET(dst, dstw); |
| ADJUST_LOCAL_OFFSET(src1, src1w); |
| ADJUST_LOCAL_OFFSET(src2, src2w); |
| |
| switch (GET_OPCODE(op)) { |
| case SLJIT_ADD: |
| case SLJIT_ADDC: |
| case SLJIT_SUB: |
| case SLJIT_SUBC: |
| return emit_op(compiler, op, ALLOW_IMM | ALLOW_NEG_IMM | ALLOW_DOUBLE_IMM, dst, dstw, src1, src1w, src2, src2w); |
| |
| case SLJIT_OR: |
| return emit_op(compiler, op, ALLOW_IMM | ALLOW_DOUBLE_IMM, dst, dstw, src1, src1w, src2, src2w); |
| |
| case SLJIT_XOR: |
| inp_flags = ALLOW_IMM | ALLOW_DOUBLE_IMM; |
| if ((src1 == SLJIT_IMM && src1w == -1) || (src2 == SLJIT_IMM && src2w == -1)) { |
| inp_flags |= ALLOW_INV_IMM; |
| } |
| return emit_op(compiler, op, inp_flags, dst, dstw, src1, src1w, src2, src2w); |
| |
| case SLJIT_MUL: |
| return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w); |
| |
| case SLJIT_AND: |
| return emit_op(compiler, op, ALLOW_ANY_IMM, dst, dstw, src1, src1w, src2, src2w); |
| |
| case SLJIT_SHL: |
| case SLJIT_MSHL: |
| case SLJIT_LSHR: |
| case SLJIT_MLSHR: |
| case SLJIT_ASHR: |
| case SLJIT_MASHR: |
| case SLJIT_ROTL: |
| case SLJIT_ROTR: |
| if (src2 == SLJIT_IMM) { |
| compiler->shift_imm = src2w & 0x1f; |
| return emit_op(compiler, op, 0, dst, dstw, TMP_REG1, 0, src1, src1w); |
| } else { |
| compiler->shift_imm = 0x20; |
| return emit_op(compiler, op, 0, dst, dstw, src1, src1w, src2, src2w); |
| } |
| } |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op2u(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 src1, sljit_sw src1w, |
| sljit_s32 src2, sljit_sw src2w) |
| { |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_op2(compiler, op, 1, 0, 0, src1, src1w, src2, src2w)); |
| |
| SLJIT_SKIP_CHECKS(compiler); |
| return sljit_emit_op2(compiler, op, TMP_REG2, 0, src1, src1w, src2, src2w); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_shift_into(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 dst_reg, |
| sljit_s32 src1_reg, |
| sljit_s32 src2_reg, |
| sljit_s32 src3, sljit_sw src3w) |
| { |
| sljit_s32 is_left; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_shift_into(compiler, op, dst_reg, src1_reg, src2_reg, src3, src3w)); |
| |
| op = GET_OPCODE(op); |
| is_left = (op == SLJIT_SHL || op == SLJIT_MSHL); |
| |
| if (src1_reg == src2_reg) { |
| SLJIT_SKIP_CHECKS(compiler); |
| return sljit_emit_op2(compiler, is_left ? SLJIT_ROTL : SLJIT_ROTR, dst_reg, 0, src1_reg, 0, src3, src3w); |
| } |
| |
| ADJUST_LOCAL_OFFSET(src3, src3w); |
| |
| /* Shift type of ROR is 3. */ |
| if (src3 == SLJIT_IMM) { |
| src3w &= 0x1f; |
| |
| if (src3w == 0) |
| return SLJIT_SUCCESS; |
| |
| FAIL_IF(push_inst(compiler, MOV | RD(dst_reg) | RM(src1_reg) | ((sljit_ins)(is_left ? 0 : 1) << 5) | ((sljit_ins)src3w << 7))); |
| src3w = (src3w ^ 0x1f) + 1; |
| return push_inst(compiler, ORR | RD(dst_reg) | RN(dst_reg) | RM(src2_reg) | ((sljit_ins)(is_left ? 1 : 0) << 5) | ((sljit_ins)src3w << 7)); |
| } |
| |
| if (src3 & SLJIT_MEM) { |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG2, src3, src3w, TMP_REG2)); |
| src3 = TMP_REG2; |
| } |
| |
| if (op == SLJIT_MSHL || op == SLJIT_MLSHR || dst_reg == src3) { |
| FAIL_IF(push_inst(compiler, AND | SRC2_IMM | RD(TMP_REG2) | RN(src3) | 0x1f)); |
| src3 = TMP_REG2; |
| } |
| |
| FAIL_IF(push_inst(compiler, MOV | RD(dst_reg) | RM8(src3) | ((sljit_ins)(is_left ? 0 : 1) << 5) | 0x10 | RM(src1_reg))); |
| FAIL_IF(push_inst(compiler, MOV | RD(TMP_REG1) | RM(src2_reg) | ((sljit_ins)(is_left ? 1 : 0) << 5) | (1 << 7))); |
| FAIL_IF(push_inst(compiler, EOR | SRC2_IMM | RD(TMP_REG2) | RN(src3) | 0x1f)); |
| return push_inst(compiler, ORR | RD(dst_reg) | RN(dst_reg) | RM8(TMP_REG2) | ((sljit_ins)(is_left ? 1 : 0) << 5) | 0x10 | RM(TMP_REG1)); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_src(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 src, sljit_sw srcw) |
| { |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_op_src(compiler, op, src, srcw)); |
| ADJUST_LOCAL_OFFSET(src, srcw); |
| |
| switch (op) { |
| case SLJIT_FAST_RETURN: |
| SLJIT_ASSERT(reg_map[TMP_REG2] == 14); |
| |
| if (FAST_IS_REG(src)) |
| FAIL_IF(push_inst(compiler, MOV | RD(TMP_REG2) | RM(src))); |
| else |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG2, src, srcw, TMP_REG1)); |
| |
| return push_inst(compiler, BX | RM(TMP_REG2)); |
| case SLJIT_SKIP_FRAMES_BEFORE_FAST_RETURN: |
| return SLJIT_SUCCESS; |
| case SLJIT_PREFETCH_L1: |
| case SLJIT_PREFETCH_L2: |
| case SLJIT_PREFETCH_L3: |
| case SLJIT_PREFETCH_ONCE: |
| SLJIT_ASSERT(src & SLJIT_MEM); |
| return emit_op_mem(compiler, PRELOAD | LOAD_DATA, TMP_PC, src, srcw, TMP_REG1); |
| } |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_dst(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 dst, sljit_sw dstw) |
| { |
| sljit_s32 size, dst_r; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_op_dst(compiler, op, dst, dstw)); |
| ADJUST_LOCAL_OFFSET(dst, dstw); |
| |
| switch (op) { |
| case SLJIT_FAST_ENTER: |
| SLJIT_ASSERT(reg_map[TMP_REG2] == 14); |
| |
| if (FAST_IS_REG(dst)) |
| return push_inst(compiler, MOV | RD(dst) | RM(TMP_REG2)); |
| break; |
| case SLJIT_GET_RETURN_ADDRESS: |
| size = GET_SAVED_REGISTERS_SIZE(compiler->scratches, compiler->saveds - SLJIT_KEPT_SAVEDS_COUNT(compiler->options), 0); |
| |
| if (compiler->fsaveds > 0 || compiler->fscratches >= SLJIT_FIRST_SAVED_FLOAT_REG) { |
| /* The size of pc is not added above. */ |
| if ((size & SSIZE_OF(sw)) == 0) |
| size += SSIZE_OF(sw); |
| |
| size += GET_SAVED_FLOAT_REGISTERS_SIZE(compiler->fscratches, compiler->fsaveds, f64); |
| } |
| |
| SLJIT_ASSERT(((compiler->local_size + size + SSIZE_OF(sw)) & 0x7) == 0); |
| |
| dst_r = FAST_IS_REG(dst) ? dst : TMP_REG2; |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, dst_r, SLJIT_MEM1(SLJIT_SP), compiler->local_size + size, TMP_REG1)); |
| break; |
| } |
| |
| if (dst & SLJIT_MEM) |
| return emit_op_mem(compiler, WORD_SIZE, TMP_REG2, dst, dstw, TMP_REG1); |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_get_register_index(sljit_s32 type, sljit_s32 reg) |
| { |
| CHECK_REG_INDEX(check_sljit_get_register_index(type, reg)); |
| |
| if (type == SLJIT_GP_REGISTER) |
| return reg_map[reg]; |
| |
| if (type == SLJIT_FLOAT_REGISTER || type == SLJIT_SIMD_REG_64) |
| return freg_map[reg]; |
| |
| if (type != SLJIT_SIMD_REG_128) |
| return freg_map[reg] & ~0x1; |
| |
| return -1; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_custom(struct sljit_compiler *compiler, |
| void *instruction, sljit_u32 size) |
| { |
| SLJIT_UNUSED_ARG(size); |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_op_custom(compiler, instruction, size)); |
| |
| return push_inst(compiler, *(sljit_ins*)instruction); |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| /* Floating point operators */ |
| /* --------------------------------------------------------------------- */ |
| |
| #define FPU_LOAD (1 << 20) |
| #define EMIT_FPU_DATA_TRANSFER(inst, add, base, freg, offs) \ |
| ((inst) | (sljit_ins)((add) << 23) | RN(base) | VD(freg) | (sljit_ins)(offs)) |
| |
| static sljit_s32 emit_fop_mem(struct sljit_compiler *compiler, sljit_s32 flags, sljit_s32 reg, sljit_s32 arg, sljit_sw argw) |
| { |
| sljit_uw imm; |
| sljit_ins inst = VSTR_F32 | (flags & (SLJIT_32 | FPU_LOAD)); |
| |
| SLJIT_ASSERT(arg & SLJIT_MEM); |
| arg &= ~SLJIT_MEM; |
| |
| if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) { |
| FAIL_IF(push_inst(compiler, ADD | RD(TMP_REG2) | RN(arg & REG_MASK) | RM(OFFS_REG(arg)) | (((sljit_ins)argw & 0x3) << 7))); |
| arg = TMP_REG2; |
| argw = 0; |
| } |
| |
| /* Fast loads and stores. */ |
| if (arg) { |
| if (!(argw & ~0x3fc)) |
| return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, arg & REG_MASK, reg, argw >> 2)); |
| if (!(-argw & ~0x3fc)) |
| return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 0, arg & REG_MASK, reg, (-argw) >> 2)); |
| |
| imm = get_imm((sljit_uw)argw & ~(sljit_uw)0x3fc); |
| if (imm) { |
| FAIL_IF(push_inst(compiler, ADD | RD(TMP_REG2) | RN(arg & REG_MASK) | imm)); |
| return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, TMP_REG2, reg, (argw & 0x3fc) >> 2)); |
| } |
| imm = get_imm((sljit_uw)-argw & ~(sljit_uw)0x3fc); |
| if (imm) { |
| argw = -argw; |
| FAIL_IF(push_inst(compiler, SUB | RD(TMP_REG2) | RN(arg & REG_MASK) | imm)); |
| return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 0, TMP_REG2, reg, (argw & 0x3fc) >> 2)); |
| } |
| } |
| |
| if (arg) { |
| FAIL_IF(load_immediate(compiler, TMP_REG2, (sljit_uw)argw)); |
| FAIL_IF(push_inst(compiler, ADD | RD(TMP_REG2) | RN(arg & REG_MASK) | RM(TMP_REG2))); |
| } |
| else |
| FAIL_IF(load_immediate(compiler, TMP_REG2, (sljit_uw)argw)); |
| |
| return push_inst(compiler, EMIT_FPU_DATA_TRANSFER(inst, 1, TMP_REG2, reg, 0)); |
| } |
| |
| static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_sw_from_f64(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 dst, sljit_sw dstw, |
| sljit_s32 src, sljit_sw srcw) |
| { |
| op ^= SLJIT_32; |
| |
| if (src & SLJIT_MEM) { |
| FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_32) | FPU_LOAD, TMP_FREG1, src, srcw)); |
| src = TMP_FREG1; |
| } |
| |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VCVT_S32_F32, op & SLJIT_32, TMP_FREG1, src, 0))); |
| |
| if (FAST_IS_REG(dst)) |
| return push_inst(compiler, VMOV | (1 << 20) | RD(dst) | VN(TMP_FREG1)); |
| |
| /* Store the integer value from a VFP register. */ |
| return emit_fop_mem(compiler, 0, TMP_FREG1, dst, dstw); |
| } |
| |
| static sljit_s32 sljit_emit_fop1_conv_f64_from_w(struct sljit_compiler *compiler, sljit_ins ins, |
| sljit_s32 dst, sljit_sw dstw, |
| sljit_s32 src, sljit_sw srcw) |
| { |
| sljit_s32 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1; |
| |
| if (FAST_IS_REG(src)) |
| FAIL_IF(push_inst(compiler, VMOV | RD(src) | VN(TMP_FREG1))); |
| else if (src & SLJIT_MEM) { |
| /* Load the integer value into a VFP register. */ |
| FAIL_IF(emit_fop_mem(compiler, FPU_LOAD, TMP_FREG1, src, srcw)); |
| } |
| else { |
| FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_uw)srcw)); |
| FAIL_IF(push_inst(compiler, VMOV | RD(TMP_REG1) | VN(TMP_FREG1))); |
| } |
| |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(ins, ins & SLJIT_32, dst_r, TMP_FREG1, 0))); |
| |
| if (dst & SLJIT_MEM) |
| return emit_fop_mem(compiler, (ins & SLJIT_32), TMP_FREG1, dst, dstw); |
| return SLJIT_SUCCESS; |
| } |
| |
| static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_f64_from_sw(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 dst, sljit_sw dstw, |
| sljit_s32 src, sljit_sw srcw) |
| { |
| return sljit_emit_fop1_conv_f64_from_w(compiler, VCVT_F32_S32 | (~op & SLJIT_32), dst, dstw, src, srcw); |
| } |
| |
| static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_f64_from_uw(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 dst, sljit_sw dstw, |
| sljit_s32 src, sljit_sw srcw) |
| { |
| return sljit_emit_fop1_conv_f64_from_w(compiler, VCVT_F32_U32 | (~op & SLJIT_32), dst, dstw, src, srcw); |
| } |
| |
| static SLJIT_INLINE sljit_s32 sljit_emit_fop1_cmp(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 src1, sljit_sw src1w, |
| sljit_s32 src2, sljit_sw src2w) |
| { |
| op ^= SLJIT_32; |
| |
| if (src1 & SLJIT_MEM) { |
| FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_32) | FPU_LOAD, TMP_FREG1, src1, src1w)); |
| src1 = TMP_FREG1; |
| } |
| |
| if (src2 & SLJIT_MEM) { |
| FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_32) | FPU_LOAD, TMP_FREG2, src2, src2w)); |
| src2 = TMP_FREG2; |
| } |
| |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VCMP_F32, op & SLJIT_32, src1, src2, 0))); |
| FAIL_IF(push_inst(compiler, VMRS)); |
| |
| if (GET_FLAG_TYPE(op) != SLJIT_UNORDERED_OR_EQUAL) |
| return SLJIT_SUCCESS; |
| |
| return push_inst(compiler, (CMP - CONDITIONAL) | (0x60000000 /* VS */) | SET_FLAGS | RN(TMP_REG1) | RM(TMP_REG1)); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop1(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 dst, sljit_sw dstw, |
| sljit_s32 src, sljit_sw srcw) |
| { |
| sljit_s32 dst_r; |
| |
| CHECK_ERROR(); |
| |
| SLJIT_COMPILE_ASSERT((SLJIT_32 == 0x100), float_transfer_bit_error); |
| SELECT_FOP1_OPERATION_WITH_CHECKS(compiler, op, dst, dstw, src, srcw); |
| |
| dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1; |
| |
| if (GET_OPCODE(op) != SLJIT_CONV_F64_FROM_F32) |
| op ^= SLJIT_32; |
| |
| if (src & SLJIT_MEM) { |
| FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_32) | FPU_LOAD, dst_r, src, srcw)); |
| src = dst_r; |
| } |
| |
| switch (GET_OPCODE(op)) { |
| case SLJIT_MOV_F64: |
| if (src != dst_r) { |
| if (dst_r != TMP_FREG1) |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VMOV_F32, op & SLJIT_32, dst_r, src, 0))); |
| else |
| dst_r = src; |
| } |
| break; |
| case SLJIT_NEG_F64: |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VNEG_F32, op & SLJIT_32, dst_r, src, 0))); |
| break; |
| case SLJIT_ABS_F64: |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VABS_F32, op & SLJIT_32, dst_r, src, 0))); |
| break; |
| case SLJIT_CONV_F64_FROM_F32: |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VCVT_F64_F32, op & SLJIT_32, dst_r, src, 0))); |
| op ^= SLJIT_32; |
| break; |
| } |
| |
| if (dst & SLJIT_MEM) |
| return emit_fop_mem(compiler, (op & SLJIT_32), dst_r, dst, dstw); |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fop2(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 dst, sljit_sw dstw, |
| sljit_s32 src1, sljit_sw src1w, |
| sljit_s32 src2, sljit_sw src2w) |
| { |
| sljit_s32 dst_r; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_fop2(compiler, op, dst, dstw, src1, src1w, src2, src2w)); |
| ADJUST_LOCAL_OFFSET(dst, dstw); |
| ADJUST_LOCAL_OFFSET(src1, src1w); |
| ADJUST_LOCAL_OFFSET(src2, src2w); |
| |
| op ^= SLJIT_32; |
| |
| dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG1; |
| |
| if (src2 & SLJIT_MEM) { |
| FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_32) | FPU_LOAD, TMP_FREG2, src2, src2w)); |
| src2 = TMP_FREG2; |
| } |
| |
| if (src1 & SLJIT_MEM) { |
| FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_32) | FPU_LOAD, TMP_FREG1, src1, src1w)); |
| src1 = TMP_FREG1; |
| } |
| |
| switch (GET_OPCODE(op)) { |
| case SLJIT_ADD_F64: |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VADD_F32, op & SLJIT_32, dst_r, src2, src1))); |
| break; |
| case SLJIT_SUB_F64: |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VSUB_F32, op & SLJIT_32, dst_r, src2, src1))); |
| break; |
| case SLJIT_MUL_F64: |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VMUL_F32, op & SLJIT_32, dst_r, src2, src1))); |
| break; |
| case SLJIT_DIV_F64: |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VDIV_F32, op & SLJIT_32, dst_r, src2, src1))); |
| break; |
| case SLJIT_COPYSIGN_F64: |
| FAIL_IF(push_inst(compiler, VMOV | (1 << 20) | VN(src2) | RD(TMP_REG1) | ((op & SLJIT_32) ? (1 << 7) : 0))); |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VABS_F32, op & SLJIT_32, dst_r, src1, 0))); |
| FAIL_IF(push_inst(compiler, CMP | SET_FLAGS | RN(TMP_REG1) | SRC2_IMM | 0)); |
| return push_inst(compiler, EMIT_FPU_OPERATION((VNEG_F32 & ~COND_MASK) | 0xb0000000, op & SLJIT_32, dst_r, dst_r, 0)); |
| } |
| |
| if (dst_r == TMP_FREG1) |
| FAIL_IF(emit_fop_mem(compiler, (op & SLJIT_32), TMP_FREG1, dst, dstw)); |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| #undef EMIT_FPU_DATA_TRANSFER |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fset32(struct sljit_compiler *compiler, |
| sljit_s32 freg, sljit_f32 value) |
| { |
| #if defined(__ARM_NEON) && __ARM_NEON |
| sljit_u32 exp; |
| sljit_ins ins; |
| #endif /* NEON */ |
| union { |
| sljit_u32 imm; |
| sljit_f32 value; |
| } u; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_fset32(compiler, freg, value)); |
| |
| u.value = value; |
| |
| #if defined(__ARM_NEON) && __ARM_NEON |
| if ((u.imm << (32 - 19)) == 0) { |
| exp = (u.imm >> (23 + 2)) & 0x3f; |
| |
| if (exp == 0x20 || exp == 0x1f) { |
| ins = ((u.imm >> 24) & 0x80) | ((u.imm >> 19) & 0x7f); |
| return push_inst(compiler, (VMOV_F32 ^ (1 << 6)) | ((ins & 0xf0) << 12) | VD(freg) | (ins & 0xf)); |
| } |
| } |
| #endif /* NEON */ |
| |
| FAIL_IF(load_immediate(compiler, TMP_REG1, u.imm)); |
| return push_inst(compiler, VMOV | VN(freg) | RD(TMP_REG1)); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fset64(struct sljit_compiler *compiler, |
| sljit_s32 freg, sljit_f64 value) |
| { |
| #if defined(__ARM_NEON) && __ARM_NEON |
| sljit_u32 exp; |
| sljit_ins ins; |
| #endif /* NEON */ |
| union { |
| sljit_u32 imm[2]; |
| sljit_f64 value; |
| } u; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_fset64(compiler, freg, value)); |
| |
| u.value = value; |
| |
| #if defined(__ARM_NEON) && __ARM_NEON |
| if (u.imm[0] == 0 && (u.imm[1] << (64 - 48)) == 0) { |
| exp = (u.imm[1] >> ((52 - 32) + 2)) & 0x1ff; |
| |
| if (exp == 0x100 || exp == 0xff) { |
| ins = ((u.imm[1] >> (56 - 32)) & 0x80) | ((u.imm[1] >> (48 - 32)) & 0x7f); |
| return push_inst(compiler, (VMOV_F32 ^ (1 << 6)) | (1 << 8) | ((ins & 0xf0) << 12) | VD(freg) | (ins & 0xf)); |
| } |
| } |
| #endif /* NEON */ |
| |
| FAIL_IF(load_immediate(compiler, TMP_REG1, u.imm[0])); |
| if (u.imm[0] == u.imm[1]) |
| return push_inst(compiler, VMOV2 | RN(TMP_REG1) | RD(TMP_REG1) | VM(freg)); |
| |
| FAIL_IF(load_immediate(compiler, TMP_REG2, u.imm[1])); |
| return push_inst(compiler, VMOV2 | RN(TMP_REG2) | RD(TMP_REG1) | VM(freg)); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fcopy(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 freg, sljit_s32 reg) |
| { |
| sljit_s32 reg2; |
| sljit_ins inst; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_fcopy(compiler, op, freg, reg)); |
| |
| if (reg & REG_PAIR_MASK) { |
| reg2 = REG_PAIR_SECOND(reg); |
| reg = REG_PAIR_FIRST(reg); |
| |
| inst = VMOV2 | RN(reg) | RD(reg2) | VM(freg); |
| } else { |
| inst = VMOV | VN(freg) | RD(reg); |
| |
| if (!(op & SLJIT_32)) |
| inst |= 1 << 7; |
| } |
| |
| if (GET_OPCODE(op) == SLJIT_COPY_FROM_F64) |
| inst |= 1 << 20; |
| |
| return push_inst(compiler, inst); |
| } |
| |
| /* --------------------------------------------------------------------- */ |
| /* Conditional instructions */ |
| /* --------------------------------------------------------------------- */ |
| |
| static sljit_ins get_cc(struct sljit_compiler *compiler, sljit_s32 type) |
| { |
| switch (type) { |
| case SLJIT_EQUAL: |
| case SLJIT_ATOMIC_STORED: |
| case SLJIT_F_EQUAL: |
| case SLJIT_ORDERED_EQUAL: |
| case SLJIT_UNORDERED_OR_EQUAL: |
| return 0x00000000; |
| |
| case SLJIT_NOT_EQUAL: |
| case SLJIT_ATOMIC_NOT_STORED: |
| case SLJIT_F_NOT_EQUAL: |
| case SLJIT_UNORDERED_OR_NOT_EQUAL: |
| case SLJIT_ORDERED_NOT_EQUAL: |
| return 0x10000000; |
| |
| case SLJIT_CARRY: |
| if (compiler->status_flags_state & SLJIT_CURRENT_FLAGS_ADD) |
| return 0x20000000; |
| /* fallthrough */ |
| |
| case SLJIT_LESS: |
| return 0x30000000; |
| |
| case SLJIT_NOT_CARRY: |
| if (compiler->status_flags_state & SLJIT_CURRENT_FLAGS_ADD) |
| return 0x30000000; |
| /* fallthrough */ |
| |
| case SLJIT_GREATER_EQUAL: |
| return 0x20000000; |
| |
| case SLJIT_GREATER: |
| case SLJIT_UNORDERED_OR_GREATER: |
| return 0x80000000; |
| |
| case SLJIT_LESS_EQUAL: |
| case SLJIT_F_LESS_EQUAL: |
| case SLJIT_ORDERED_LESS_EQUAL: |
| return 0x90000000; |
| |
| case SLJIT_SIG_LESS: |
| case SLJIT_UNORDERED_OR_LESS: |
| return 0xb0000000; |
| |
| case SLJIT_SIG_GREATER_EQUAL: |
| case SLJIT_F_GREATER_EQUAL: |
| case SLJIT_ORDERED_GREATER_EQUAL: |
| return 0xa0000000; |
| |
| case SLJIT_SIG_GREATER: |
| case SLJIT_F_GREATER: |
| case SLJIT_ORDERED_GREATER: |
| return 0xc0000000; |
| |
| case SLJIT_SIG_LESS_EQUAL: |
| case SLJIT_UNORDERED_OR_LESS_EQUAL: |
| return 0xd0000000; |
| |
| case SLJIT_OVERFLOW: |
| if (!(compiler->status_flags_state & (SLJIT_CURRENT_FLAGS_ADD | SLJIT_CURRENT_FLAGS_SUB))) |
| return 0x10000000; |
| /* fallthrough */ |
| |
| case SLJIT_UNORDERED: |
| return 0x60000000; |
| |
| case SLJIT_NOT_OVERFLOW: |
| if (!(compiler->status_flags_state & (SLJIT_CURRENT_FLAGS_ADD | SLJIT_CURRENT_FLAGS_SUB))) |
| return 0x00000000; |
| /* fallthrough */ |
| |
| case SLJIT_ORDERED: |
| return 0x70000000; |
| |
| case SLJIT_F_LESS: |
| case SLJIT_ORDERED_LESS: |
| return 0x40000000; |
| |
| case SLJIT_UNORDERED_OR_GREATER_EQUAL: |
| return 0x50000000; |
| |
| default: |
| SLJIT_ASSERT(type >= SLJIT_JUMP && type <= SLJIT_CALL_REG_ARG); |
| return 0xe0000000; |
| } |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE struct sljit_label* sljit_emit_label(struct sljit_compiler *compiler) |
| { |
| struct sljit_label *label; |
| |
| CHECK_ERROR_PTR(); |
| CHECK_PTR(check_sljit_emit_label(compiler)); |
| |
| if (compiler->last_label && compiler->last_label->size == compiler->size) |
| return compiler->last_label; |
| |
| label = (struct sljit_label*)ensure_abuf(compiler, sizeof(struct sljit_label)); |
| PTR_FAIL_IF(!label); |
| set_label(label, compiler); |
| return label; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_jump(struct sljit_compiler *compiler, sljit_s32 type) |
| { |
| struct sljit_jump *jump; |
| |
| CHECK_ERROR_PTR(); |
| CHECK_PTR(check_sljit_emit_jump(compiler, type)); |
| |
| jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump)); |
| PTR_FAIL_IF(!jump); |
| set_jump(jump, compiler, type & SLJIT_REWRITABLE_JUMP); |
| type &= 0xff; |
| |
| SLJIT_ASSERT(reg_map[TMP_REG1] != 14); |
| |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| if (type >= SLJIT_FAST_CALL) |
| PTR_FAIL_IF(prepare_blx(compiler)); |
| PTR_FAIL_IF(push_inst_with_unique_literal(compiler, ((EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1, |
| type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, TMP_PC, 0)) & ~COND_MASK) | get_cc(compiler, type), 0)); |
| |
| if (jump->flags & SLJIT_REWRITABLE_JUMP) { |
| jump->addr = compiler->size; |
| compiler->patches++; |
| } |
| |
| if (type >= SLJIT_FAST_CALL) { |
| jump->flags |= IS_BL; |
| PTR_FAIL_IF(emit_blx(compiler)); |
| } |
| |
| if (!(jump->flags & SLJIT_REWRITABLE_JUMP)) |
| jump->addr = compiler->size; |
| #else /* !SLJIT_CONFIG_ARM_V6 */ |
| if (type >= SLJIT_FAST_CALL) |
| jump->flags |= IS_BL; |
| PTR_FAIL_IF(emit_imm(compiler, TMP_REG1, 0)); |
| PTR_FAIL_IF(push_inst(compiler, (((type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)) & ~COND_MASK) | get_cc(compiler, type))); |
| jump->addr = compiler->size; |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| return jump; |
| } |
| |
| #ifdef __SOFTFP__ |
| |
| static sljit_s32 softfloat_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types, sljit_s32 *src, sljit_u32 *extra_space) |
| { |
| sljit_u32 is_tail_call = *extra_space & SLJIT_CALL_RETURN; |
| sljit_u32 offset = 0; |
| sljit_u32 word_arg_offset = 0; |
| sljit_u32 src_offset = 4 * sizeof(sljit_sw); |
| sljit_u32 float_arg_count = 0; |
| sljit_s32 types = 0; |
| sljit_u8 offsets[4]; |
| sljit_u8 *offset_ptr = offsets; |
| |
| if (src && FAST_IS_REG(*src)) |
| src_offset = (sljit_u32)reg_map[*src] * sizeof(sljit_sw); |
| |
| arg_types >>= SLJIT_ARG_SHIFT; |
| |
| while (arg_types) { |
| types = (types << SLJIT_ARG_SHIFT) | (arg_types & SLJIT_ARG_MASK); |
| |
| switch (arg_types & SLJIT_ARG_MASK) { |
| case SLJIT_ARG_TYPE_F64: |
| if (offset & 0x7) |
| offset += sizeof(sljit_sw); |
| *offset_ptr++ = (sljit_u8)offset; |
| offset += sizeof(sljit_f64); |
| float_arg_count++; |
| break; |
| case SLJIT_ARG_TYPE_F32: |
| *offset_ptr++ = (sljit_u8)offset; |
| offset += sizeof(sljit_f32); |
| float_arg_count++; |
| break; |
| default: |
| *offset_ptr++ = (sljit_u8)offset; |
| offset += sizeof(sljit_sw); |
| word_arg_offset += sizeof(sljit_sw); |
| break; |
| } |
| |
| arg_types >>= SLJIT_ARG_SHIFT; |
| } |
| |
| if (offset > 4 * sizeof(sljit_sw) && (!is_tail_call || offset > compiler->args_size)) { |
| /* Keep lr register on the stack. */ |
| if (is_tail_call) |
| offset += sizeof(sljit_sw); |
| |
| offset = ((offset - 4 * sizeof(sljit_sw)) + 0x7) & ~(sljit_u32)0x7; |
| |
| *extra_space = offset; |
| |
| if (is_tail_call) |
| FAIL_IF(emit_stack_frame_release(compiler, (sljit_s32)offset)); |
| else |
| FAIL_IF(push_inst(compiler, SUB | RD(SLJIT_SP) | RN(SLJIT_SP) | SRC2_IMM | offset)); |
| } else { |
| if (is_tail_call) |
| FAIL_IF(emit_stack_frame_release(compiler, -1)); |
| *extra_space = 0; |
| } |
| |
| /* Process arguments in reversed direction. */ |
| while (types) { |
| switch (types & SLJIT_ARG_MASK) { |
| case SLJIT_ARG_TYPE_F64: |
| float_arg_count--; |
| offset = *(--offset_ptr); |
| |
| SLJIT_ASSERT((offset & 0x7) == 0); |
| |
| if (offset < 4 * sizeof(sljit_sw)) { |
| if (src_offset == offset || src_offset == offset + sizeof(sljit_sw)) { |
| FAIL_IF(push_inst(compiler, MOV | RD(TMP_REG1) | (src_offset >> 2))); |
| *src = TMP_REG1; |
| } |
| FAIL_IF(push_inst(compiler, VMOV2 | 0x100000 | (offset << 10) | ((offset + sizeof(sljit_sw)) << 14) | float_arg_count)); |
| } else |
| FAIL_IF(push_inst(compiler, VSTR_F32 | 0x800100 | RN(SLJIT_SP) |
| | (float_arg_count << 12) | ((offset - 4 * sizeof(sljit_sw)) >> 2))); |
| break; |
| case SLJIT_ARG_TYPE_F32: |
| float_arg_count--; |
| offset = *(--offset_ptr); |
| |
| if (offset < 4 * sizeof(sljit_sw)) { |
| if (src_offset == offset) { |
| FAIL_IF(push_inst(compiler, MOV | RD(TMP_REG1) | (src_offset >> 2))); |
| *src = TMP_REG1; |
| } |
| FAIL_IF(push_inst(compiler, VMOV | 0x100000 | (float_arg_count << 16) | (offset << 10))); |
| } else |
| FAIL_IF(push_inst(compiler, VSTR_F32 | 0x800000 | RN(SLJIT_SP) |
| | (float_arg_count << 12) | ((offset - 4 * sizeof(sljit_sw)) >> 2))); |
| break; |
| default: |
| word_arg_offset -= sizeof(sljit_sw); |
| offset = *(--offset_ptr); |
| |
| SLJIT_ASSERT(offset >= word_arg_offset); |
| |
| if (offset != word_arg_offset) { |
| if (offset < 4 * sizeof(sljit_sw)) { |
| if (src_offset == offset) { |
| FAIL_IF(push_inst(compiler, MOV | RD(TMP_REG1) | (src_offset >> 2))); |
| *src = TMP_REG1; |
| } |
| else if (src_offset == word_arg_offset) { |
| *src = (sljit_s32)(SLJIT_R0 + (offset >> 2)); |
| src_offset = offset; |
| } |
| FAIL_IF(push_inst(compiler, MOV | (offset << 10) | (word_arg_offset >> 2))); |
| } else |
| FAIL_IF(push_inst(compiler, STR | 0x800000 | RN(SLJIT_SP) | (word_arg_offset << 10) | (offset - 4 * sizeof(sljit_sw)))); |
| } |
| break; |
| } |
| |
| types >>= SLJIT_ARG_SHIFT; |
| } |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| static sljit_s32 softfloat_post_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types) |
| { |
| if ((arg_types & SLJIT_ARG_MASK) == SLJIT_ARG_TYPE_F64) |
| FAIL_IF(push_inst(compiler, VMOV2 | (1 << 16) | (0 << 12) | 0)); |
| if ((arg_types & SLJIT_ARG_MASK) == SLJIT_ARG_TYPE_F32) |
| FAIL_IF(push_inst(compiler, VMOV | (0 << 16) | (0 << 12))); |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| #else /* !__SOFTFP__ */ |
| |
| static sljit_s32 hardfloat_call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types) |
| { |
| sljit_u32 offset = SLJIT_FR0; |
| sljit_u32 new_offset = SLJIT_FR0; |
| sljit_u32 f32_offset = 0; |
| |
| /* Remove return value. */ |
| arg_types >>= SLJIT_ARG_SHIFT; |
| |
| while (arg_types) { |
| switch (arg_types & SLJIT_ARG_MASK) { |
| case SLJIT_ARG_TYPE_F64: |
| if (offset != new_offset) |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VMOV_F32, |
| SLJIT_32, new_offset, offset, 0))); |
| |
| new_offset++; |
| offset++; |
| break; |
| case SLJIT_ARG_TYPE_F32: |
| if (f32_offset != 0) { |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VMOV_F32, |
| 0x400000, f32_offset, offset, 0))); |
| f32_offset = 0; |
| } else { |
| if (offset != new_offset) |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VMOV_F32, |
| 0, new_offset, offset, 0))); |
| f32_offset = new_offset; |
| new_offset++; |
| } |
| offset++; |
| break; |
| } |
| arg_types >>= SLJIT_ARG_SHIFT; |
| } |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| #endif /* __SOFTFP__ */ |
| |
| SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_call(struct sljit_compiler *compiler, sljit_s32 type, |
| sljit_s32 arg_types) |
| { |
| #ifdef __SOFTFP__ |
| struct sljit_jump *jump; |
| sljit_u32 extra_space = (sljit_u32)type; |
| #endif |
| |
| CHECK_ERROR_PTR(); |
| CHECK_PTR(check_sljit_emit_call(compiler, type, arg_types)); |
| |
| #ifdef __SOFTFP__ |
| if ((type & 0xff) != SLJIT_CALL_REG_ARG) { |
| PTR_FAIL_IF(softfloat_call_with_args(compiler, arg_types, NULL, &extra_space)); |
| SLJIT_ASSERT((extra_space & 0x7) == 0); |
| |
| if ((type & SLJIT_CALL_RETURN) && extra_space == 0) |
| type = SLJIT_JUMP | (type & SLJIT_REWRITABLE_JUMP); |
| |
| SLJIT_SKIP_CHECKS(compiler); |
| jump = sljit_emit_jump(compiler, type); |
| PTR_FAIL_IF(jump == NULL); |
| |
| if (extra_space > 0) { |
| if (type & SLJIT_CALL_RETURN) |
| PTR_FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1, |
| TMP_REG2, SLJIT_SP, extra_space - sizeof(sljit_sw)))); |
| |
| PTR_FAIL_IF(push_inst(compiler, ADD | RD(SLJIT_SP) | RN(SLJIT_SP) | SRC2_IMM | extra_space)); |
| |
| if (type & SLJIT_CALL_RETURN) { |
| PTR_FAIL_IF(push_inst(compiler, BX | RM(TMP_REG2))); |
| return jump; |
| } |
| } |
| |
| SLJIT_ASSERT(!(type & SLJIT_CALL_RETURN)); |
| PTR_FAIL_IF(softfloat_post_call_with_args(compiler, arg_types)); |
| return jump; |
| } |
| #endif /* __SOFTFP__ */ |
| |
| if (type & SLJIT_CALL_RETURN) { |
| PTR_FAIL_IF(emit_stack_frame_release(compiler, -1)); |
| type = SLJIT_JUMP | (type & SLJIT_REWRITABLE_JUMP); |
| } |
| |
| #ifndef __SOFTFP__ |
| if ((type & 0xff) != SLJIT_CALL_REG_ARG) |
| PTR_FAIL_IF(hardfloat_call_with_args(compiler, arg_types)); |
| #endif /* !__SOFTFP__ */ |
| |
| SLJIT_SKIP_CHECKS(compiler); |
| return sljit_emit_jump(compiler, type); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_ijump(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 src, sljit_sw srcw) |
| { |
| struct sljit_jump *jump; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_ijump(compiler, type, src, srcw)); |
| ADJUST_LOCAL_OFFSET(src, srcw); |
| |
| SLJIT_ASSERT(reg_map[TMP_REG1] != 14); |
| |
| if (src != SLJIT_IMM) { |
| if (FAST_IS_REG(src)) { |
| SLJIT_ASSERT(reg_map[src] != 14); |
| return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(src)); |
| } |
| |
| SLJIT_ASSERT(src & SLJIT_MEM); |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG1, src, srcw, TMP_REG1)); |
| return push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1)); |
| } |
| |
| /* These jumps are converted to jump/call instructions when possible. */ |
| jump = (struct sljit_jump*)ensure_abuf(compiler, sizeof(struct sljit_jump)); |
| FAIL_IF(!jump); |
| set_jump(jump, compiler, JUMP_ADDR | ((type >= SLJIT_FAST_CALL) ? IS_BL : 0)); |
| jump->u.target = (sljit_uw)srcw; |
| |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| if (type >= SLJIT_FAST_CALL) |
| FAIL_IF(prepare_blx(compiler)); |
| FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1, type <= SLJIT_JUMP ? TMP_PC : TMP_REG1, TMP_PC, 0), 0)); |
| if (type >= SLJIT_FAST_CALL) |
| FAIL_IF(emit_blx(compiler)); |
| #else /* !SLJIT_CONFIG_ARM_V6 */ |
| FAIL_IF(emit_imm(compiler, TMP_REG1, 0)); |
| FAIL_IF(push_inst(compiler, (type <= SLJIT_JUMP ? BX : BLX) | RM(TMP_REG1))); |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| jump->addr = compiler->size; |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_icall(struct sljit_compiler *compiler, sljit_s32 type, |
| sljit_s32 arg_types, |
| sljit_s32 src, sljit_sw srcw) |
| { |
| #ifdef __SOFTFP__ |
| sljit_u32 extra_space = (sljit_u32)type; |
| #endif |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_icall(compiler, type, arg_types, src, srcw)); |
| |
| if (src & SLJIT_MEM) { |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG1, src, srcw, TMP_REG1)); |
| src = TMP_REG1; |
| } |
| |
| if ((type & SLJIT_CALL_RETURN) && (src >= SLJIT_FIRST_SAVED_REG && src <= (SLJIT_S0 - SLJIT_KEPT_SAVEDS_COUNT(compiler->options)))) { |
| FAIL_IF(push_inst(compiler, MOV | RD(TMP_REG1) | RM(src))); |
| src = TMP_REG1; |
| } |
| |
| #ifdef __SOFTFP__ |
| if ((type & 0xff) != SLJIT_CALL_REG_ARG) { |
| FAIL_IF(softfloat_call_with_args(compiler, arg_types, &src, &extra_space)); |
| SLJIT_ASSERT((extra_space & 0x7) == 0); |
| |
| if ((type & SLJIT_CALL_RETURN) && extra_space == 0) |
| type = SLJIT_JUMP; |
| |
| SLJIT_SKIP_CHECKS(compiler); |
| FAIL_IF(sljit_emit_ijump(compiler, type, src, srcw)); |
| |
| if (extra_space > 0) { |
| if (type & SLJIT_CALL_RETURN) |
| FAIL_IF(push_inst(compiler, EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1, |
| TMP_REG2, SLJIT_SP, extra_space - sizeof(sljit_sw)))); |
| |
| FAIL_IF(push_inst(compiler, ADD | RD(SLJIT_SP) | RN(SLJIT_SP) | SRC2_IMM | extra_space)); |
| |
| if (type & SLJIT_CALL_RETURN) |
| return push_inst(compiler, BX | RM(TMP_REG2)); |
| } |
| |
| SLJIT_ASSERT(!(type & SLJIT_CALL_RETURN)); |
| return softfloat_post_call_with_args(compiler, arg_types); |
| } |
| #endif /* __SOFTFP__ */ |
| |
| if (type & SLJIT_CALL_RETURN) { |
| FAIL_IF(emit_stack_frame_release(compiler, -1)); |
| type = SLJIT_JUMP; |
| } |
| |
| #ifndef __SOFTFP__ |
| if ((type & 0xff) != SLJIT_CALL_REG_ARG) |
| FAIL_IF(hardfloat_call_with_args(compiler, arg_types)); |
| #endif /* !__SOFTFP__ */ |
| |
| SLJIT_SKIP_CHECKS(compiler); |
| return sljit_emit_ijump(compiler, type, src, srcw); |
| } |
| |
| #ifdef __SOFTFP__ |
| |
| static SLJIT_INLINE sljit_s32 emit_fmov_before_return(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 src, sljit_sw srcw) |
| { |
| if (compiler->options & SLJIT_ENTER_REG_ARG) { |
| if (src == SLJIT_FR0) |
| return SLJIT_SUCCESS; |
| |
| SLJIT_SKIP_CHECKS(compiler); |
| return sljit_emit_fop1(compiler, op, SLJIT_RETURN_FREG, 0, src, srcw); |
| } |
| |
| if (FAST_IS_REG(src)) { |
| if (op & SLJIT_32) |
| return push_inst(compiler, VMOV | (1 << 20) | RD(SLJIT_R0) | VN(src)); |
| return push_inst(compiler, VMOV2 | (1 << 20) | RD(SLJIT_R0) | RN(SLJIT_R1) | VM(src)); |
| } |
| |
| SLJIT_SKIP_CHECKS(compiler); |
| |
| if (op & SLJIT_32) |
| return sljit_emit_op1(compiler, SLJIT_MOV, SLJIT_R0, 0, src, srcw); |
| return sljit_emit_mem(compiler, SLJIT_MOV, SLJIT_REG_PAIR(SLJIT_R0, SLJIT_R1), src, srcw); |
| } |
| |
| #endif /* __SOFTFP__ */ |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_op_flags(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 dst, sljit_sw dstw, |
| sljit_s32 type) |
| { |
| sljit_s32 dst_reg, flags = GET_ALL_FLAGS(op); |
| sljit_ins cc, ins; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_op_flags(compiler, op, dst, dstw, type)); |
| ADJUST_LOCAL_OFFSET(dst, dstw); |
| |
| op = GET_OPCODE(op); |
| cc = get_cc(compiler, type); |
| dst_reg = FAST_IS_REG(dst) ? dst : TMP_REG1; |
| |
| if (op < SLJIT_ADD) { |
| FAIL_IF(push_inst(compiler, MOV | RD(dst_reg) | SRC2_IMM | 0)); |
| FAIL_IF(push_inst(compiler, ((MOV | RD(dst_reg) | SRC2_IMM | 1) & ~COND_MASK) | cc)); |
| if (dst & SLJIT_MEM) |
| return emit_op_mem(compiler, WORD_SIZE, TMP_REG1, dst, dstw, TMP_REG2); |
| return SLJIT_SUCCESS; |
| } |
| |
| ins = (op == SLJIT_AND ? AND : (op == SLJIT_OR ? ORR : EOR)); |
| |
| if (dst & SLJIT_MEM) |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG1, dst, dstw, TMP_REG2)); |
| |
| FAIL_IF(push_inst(compiler, ((ins | RD(dst_reg) | RN(dst_reg) | SRC2_IMM | 1) & ~COND_MASK) | cc)); |
| |
| if (op == SLJIT_AND) |
| FAIL_IF(push_inst(compiler, ((ins | RD(dst_reg) | RN(dst_reg) | SRC2_IMM | 0) & ~COND_MASK) | (cc ^ 0x10000000))); |
| |
| if (dst & SLJIT_MEM) |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG1, dst, dstw, TMP_REG2)); |
| |
| if (flags & SLJIT_SET_Z) |
| return push_inst(compiler, MOV | SET_FLAGS | RD(TMP_REG2) | RM(dst_reg)); |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_select(struct sljit_compiler *compiler, sljit_s32 type, |
| sljit_s32 dst_reg, |
| sljit_s32 src1, sljit_sw src1w, |
| sljit_s32 src2_reg) |
| { |
| sljit_ins cc, tmp; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_select(compiler, type, dst_reg, src1, src1w, src2_reg)); |
| |
| ADJUST_LOCAL_OFFSET(src1, src1w); |
| |
| if (src2_reg != dst_reg && src1 == dst_reg) { |
| src1 = src2_reg; |
| src1w = 0; |
| src2_reg = dst_reg; |
| type ^= 0x1; |
| } |
| |
| if (src1 & SLJIT_MEM) { |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, (src2_reg != dst_reg) ? dst_reg : TMP_REG1, src1, src1w, TMP_REG2)); |
| |
| if (src2_reg != dst_reg) { |
| src1 = src2_reg; |
| src1w = 0; |
| type ^= 0x1; |
| } else { |
| src1 = TMP_REG1; |
| src1w = 0; |
| } |
| } else if (dst_reg != src2_reg) |
| FAIL_IF(push_inst(compiler, MOV | RD(dst_reg) | RM(src2_reg))); |
| |
| cc = get_cc(compiler, type & ~SLJIT_32); |
| |
| if (SLJIT_UNLIKELY(src1 == SLJIT_IMM)) { |
| tmp = get_imm((sljit_uw)src1w); |
| if (tmp) |
| return push_inst(compiler, ((MOV | RD(dst_reg) | tmp) & ~COND_MASK) | cc); |
| |
| tmp = get_imm(~(sljit_uw)src1w); |
| if (tmp) |
| return push_inst(compiler, ((MVN | RD(dst_reg) | tmp) & ~COND_MASK) | cc); |
| |
| #if (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) |
| tmp = (sljit_ins)src1w; |
| FAIL_IF(push_inst(compiler, (MOVW & ~COND_MASK) | cc | RD(dst_reg) | ((tmp << 4) & 0xf0000) | (tmp & 0xfff))); |
| if (tmp <= 0xffff) |
| return SLJIT_SUCCESS; |
| return push_inst(compiler, (MOVT & ~COND_MASK) | cc | RD(dst_reg) | ((tmp >> 12) & 0xf0000) | ((tmp >> 16) & 0xfff)); |
| #else /* !SLJIT_CONFIG_ARM_V7 */ |
| FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_uw)src1w)); |
| src1 = TMP_REG1; |
| #endif /* SLJIT_CONFIG_ARM_V7 */ |
| } |
| |
| return push_inst(compiler, ((MOV | RD(dst_reg) | RM(src1)) & ~COND_MASK) | cc); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fselect(struct sljit_compiler *compiler, sljit_s32 type, |
| sljit_s32 dst_freg, |
| sljit_s32 src1, sljit_sw src1w, |
| sljit_s32 src2_freg) |
| { |
| sljit_ins cc; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_fselect(compiler, type, dst_freg, src1, src1w, src2_freg)); |
| |
| ADJUST_LOCAL_OFFSET(src1, src1w); |
| |
| type ^= SLJIT_32; |
| |
| if (dst_freg != src2_freg) { |
| if (dst_freg == src1) { |
| src1 = src2_freg; |
| src1w = 0; |
| type ^= 0x1; |
| } else |
| FAIL_IF(push_inst(compiler, EMIT_FPU_OPERATION(VMOV_F32, (type & SLJIT_32), dst_freg, src2_freg, 0))); |
| } |
| |
| if (src1 & SLJIT_MEM) { |
| FAIL_IF(emit_fop_mem(compiler, (type & SLJIT_32) | FPU_LOAD, TMP_FREG1, src1, src1w)); |
| src1 = TMP_FREG1; |
| } |
| |
| cc = get_cc(compiler, type & ~SLJIT_32); |
| return push_inst(compiler, EMIT_FPU_OPERATION((VMOV_F32 & ~COND_MASK) | cc, (type & SLJIT_32), dst_freg, src1, 0)); |
| } |
| |
| #undef EMIT_FPU_OPERATION |
| |
| static sljit_s32 update_mem_addr(struct sljit_compiler *compiler, sljit_s32 *mem, sljit_sw *memw, sljit_s32 max_offset) |
| { |
| sljit_s32 arg = *mem; |
| sljit_sw argw = *memw; |
| sljit_uw imm, tmp; |
| sljit_sw mask = 0xfff; |
| sljit_sw sign = 0x1000; |
| |
| SLJIT_ASSERT(max_offset >= 0xf00); |
| |
| *mem = TMP_REG1; |
| |
| if (SLJIT_UNLIKELY(arg & OFFS_REG_MASK)) { |
| *memw = 0; |
| return push_inst(compiler, ADD | RD(TMP_REG1) | RN(arg & REG_MASK) | RM(OFFS_REG(arg)) | ((sljit_ins)(argw & 0x3) << 7)); |
| } |
| |
| arg &= REG_MASK; |
| |
| if (arg) { |
| if (argw <= max_offset && argw >= -mask) { |
| *mem = arg; |
| return SLJIT_SUCCESS; |
| } |
| |
| if (argw >= 0) { |
| tmp = (sljit_uw)(argw & (sign | mask)); |
| tmp = (sljit_uw)((argw + ((tmp <= (sljit_uw)max_offset || tmp == (sljit_uw)sign) ? 0 : sign)) & ~mask); |
| imm = get_imm(tmp); |
| |
| if (imm) { |
| *memw = argw - (sljit_sw)tmp; |
| SLJIT_ASSERT(*memw >= -mask && *memw <= max_offset); |
| |
| return push_inst(compiler, ADD | RD(TMP_REG1) | RN(arg) | imm); |
| } |
| } else { |
| tmp = (sljit_uw)(-argw & (sign | mask)); |
| tmp = (sljit_uw)((-argw + ((tmp <= (sljit_uw)((sign << 1) - max_offset - 1)) ? 0 : sign)) & ~mask); |
| imm = get_imm(tmp); |
| |
| if (imm) { |
| *memw = argw + (sljit_sw)tmp; |
| SLJIT_ASSERT(*memw >= -mask && *memw <= max_offset); |
| |
| return push_inst(compiler, SUB | RD(TMP_REG1) | RN(arg) | imm); |
| } |
| } |
| } |
| |
| tmp = (sljit_uw)(argw & (sign | mask)); |
| tmp = (sljit_uw)((argw + ((tmp <= (sljit_uw)max_offset || tmp == (sljit_uw)sign) ? 0 : sign)) & ~mask); |
| *memw = argw - (sljit_sw)tmp; |
| |
| FAIL_IF(load_immediate(compiler, TMP_REG1, tmp)); |
| |
| if (arg == 0) |
| return SLJIT_SUCCESS; |
| |
| return push_inst(compiler, ADD | RD(TMP_REG1) | RN(TMP_REG1) | RM(arg)); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_mem(struct sljit_compiler *compiler, sljit_s32 type, |
| sljit_s32 reg, |
| sljit_s32 mem, sljit_sw memw) |
| { |
| sljit_s32 flags; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_mem(compiler, type, reg, mem, memw)); |
| |
| if (!(reg & REG_PAIR_MASK)) |
| return sljit_emit_mem_unaligned(compiler, type, reg, mem, memw); |
| |
| ADJUST_LOCAL_OFFSET(mem, memw); |
| |
| FAIL_IF(update_mem_addr(compiler, &mem, &memw, 0xfff - 4)); |
| |
| flags = WORD_SIZE; |
| |
| if (!(type & SLJIT_MEM_STORE)) { |
| if (REG_PAIR_FIRST(reg) == (mem & REG_MASK)) { |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, REG_PAIR_SECOND(reg), SLJIT_MEM1(mem), memw + SSIZE_OF(sw), TMP_REG1)); |
| return emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, REG_PAIR_FIRST(reg), SLJIT_MEM1(mem), memw, TMP_REG1); |
| } |
| |
| flags = WORD_SIZE | LOAD_DATA; |
| } |
| |
| FAIL_IF(emit_op_mem(compiler, flags, REG_PAIR_FIRST(reg), SLJIT_MEM1(mem), memw, TMP_REG1)); |
| return emit_op_mem(compiler, flags, REG_PAIR_SECOND(reg), SLJIT_MEM1(mem), memw + SSIZE_OF(sw), TMP_REG1); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_mem_update(struct sljit_compiler *compiler, sljit_s32 type, |
| sljit_s32 reg, |
| sljit_s32 mem, sljit_sw memw) |
| { |
| sljit_s32 flags; |
| sljit_ins is_type1_transfer, inst; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_mem_update(compiler, type, reg, mem, memw)); |
| |
| is_type1_transfer = 1; |
| |
| switch (type & 0xff) { |
| case SLJIT_MOV: |
| case SLJIT_MOV_U32: |
| case SLJIT_MOV_S32: |
| case SLJIT_MOV32: |
| case SLJIT_MOV_P: |
| flags = WORD_SIZE; |
| break; |
| case SLJIT_MOV_U8: |
| flags = BYTE_SIZE; |
| break; |
| case SLJIT_MOV_S8: |
| if (!(type & SLJIT_MEM_STORE)) |
| is_type1_transfer = 0; |
| flags = BYTE_SIZE | SIGNED; |
| break; |
| case SLJIT_MOV_U16: |
| is_type1_transfer = 0; |
| flags = HALF_SIZE; |
| break; |
| case SLJIT_MOV_S16: |
| is_type1_transfer = 0; |
| flags = HALF_SIZE | SIGNED; |
| break; |
| default: |
| SLJIT_UNREACHABLE(); |
| flags = WORD_SIZE; |
| break; |
| } |
| |
| if (!(type & SLJIT_MEM_STORE)) |
| flags |= LOAD_DATA; |
| |
| SLJIT_ASSERT(is_type1_transfer == !!IS_TYPE1_TRANSFER(flags)); |
| |
| if (SLJIT_UNLIKELY(mem & OFFS_REG_MASK)) { |
| if (!is_type1_transfer && memw != 0) |
| return SLJIT_ERR_UNSUPPORTED; |
| } else { |
| if (is_type1_transfer) { |
| if (memw > 4095 || memw < -4095) |
| return SLJIT_ERR_UNSUPPORTED; |
| } else if (memw > 255 || memw < -255) |
| return SLJIT_ERR_UNSUPPORTED; |
| } |
| |
| if (type & SLJIT_MEM_SUPP) |
| return SLJIT_SUCCESS; |
| |
| if (SLJIT_UNLIKELY(mem & OFFS_REG_MASK)) { |
| memw &= 0x3; |
| |
| inst = EMIT_DATA_TRANSFER(flags, 1, reg, mem & REG_MASK, RM(OFFS_REG(mem)) | ((sljit_ins)memw << 7)); |
| |
| if (is_type1_transfer) |
| inst |= (1 << 25); |
| |
| if (type & SLJIT_MEM_POST) |
| inst ^= (1 << 24); |
| else |
| inst |= (1 << 21); |
| |
| return push_inst(compiler, inst); |
| } |
| |
| inst = EMIT_DATA_TRANSFER(flags, 0, reg, mem & REG_MASK, 0); |
| |
| if (type & SLJIT_MEM_POST) |
| inst ^= (1 << 24); |
| else |
| inst |= (1 << 21); |
| |
| if (is_type1_transfer) { |
| if (memw >= 0) |
| inst |= (1 << 23); |
| else |
| memw = -memw; |
| |
| return push_inst(compiler, inst | (sljit_ins)memw); |
| } |
| |
| if (memw >= 0) |
| inst |= (1 << 23); |
| else |
| memw = -memw; |
| |
| return push_inst(compiler, inst | TYPE2_TRANSFER_IMM((sljit_ins)memw)); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fmem(struct sljit_compiler *compiler, sljit_s32 type, |
| sljit_s32 freg, |
| sljit_s32 mem, sljit_sw memw) |
| { |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_fmem(compiler, type, freg, mem, memw)); |
| |
| if (type & SLJIT_MEM_ALIGNED_32) |
| return emit_fop_mem(compiler, ((type ^ SLJIT_32) & SLJIT_32) | ((type & SLJIT_MEM_STORE) ? 0 : FPU_LOAD), freg, mem, memw); |
| |
| if (type & SLJIT_MEM_STORE) { |
| FAIL_IF(push_inst(compiler, VMOV | (1 << 20) | VN(freg) | RD(TMP_REG2))); |
| |
| if (type & SLJIT_32) |
| return emit_op_mem(compiler, WORD_SIZE, TMP_REG2, mem, memw, TMP_REG1); |
| |
| FAIL_IF(update_mem_addr(compiler, &mem, &memw, 0xfff - 4)); |
| mem |= SLJIT_MEM; |
| |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG2, mem, memw, TMP_REG1)); |
| FAIL_IF(push_inst(compiler, VMOV | (1 << 20) | VN(freg) | 0x80 | RD(TMP_REG2))); |
| return emit_op_mem(compiler, WORD_SIZE, TMP_REG2, mem, memw + 4, TMP_REG1); |
| } |
| |
| if (type & SLJIT_32) { |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG2, mem, memw, TMP_REG1)); |
| return push_inst(compiler, VMOV | VN(freg) | RD(TMP_REG2)); |
| } |
| |
| FAIL_IF(update_mem_addr(compiler, &mem, &memw, 0xfff - 4)); |
| mem |= SLJIT_MEM; |
| |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG2, mem, memw, TMP_REG1)); |
| FAIL_IF(emit_op_mem(compiler, WORD_SIZE | LOAD_DATA, TMP_REG1, mem, memw + 4, TMP_REG1)); |
| return push_inst(compiler, VMOV2 | VM(freg) | RD(TMP_REG2) | RN(TMP_REG1)); |
| } |
| |
| static sljit_s32 sljit_emit_simd_mem_offset(struct sljit_compiler *compiler, sljit_s32 *mem_ptr, sljit_sw memw) |
| { |
| sljit_s32 mem = *mem_ptr; |
| sljit_uw imm; |
| |
| if (SLJIT_UNLIKELY(mem & OFFS_REG_MASK)) { |
| *mem_ptr = TMP_REG1; |
| return push_inst(compiler, ADD | RD(TMP_REG1) | RN(mem & REG_MASK) | RM(OFFS_REG(mem)) | ((sljit_ins)(memw & 0x3) << 7)); |
| } |
| |
| if (SLJIT_UNLIKELY(!(mem & REG_MASK))) { |
| *mem_ptr = TMP_REG1; |
| return load_immediate(compiler, TMP_REG1, (sljit_uw)memw); |
| } |
| |
| mem &= REG_MASK; |
| |
| if (memw == 0) { |
| *mem_ptr = mem; |
| return SLJIT_SUCCESS; |
| } |
| |
| *mem_ptr = TMP_REG1; |
| imm = get_imm((sljit_uw)(memw < 0 ? -memw : memw)); |
| |
| if (imm != 0) |
| return push_inst(compiler, ((memw < 0) ? SUB : ADD) | RD(TMP_REG1) | RN(mem) | imm); |
| |
| FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_uw)memw)); |
| return push_inst(compiler, ADD | RD(TMP_REG1) | RN(TMP_REG1) | RM(mem)); |
| } |
| |
| static SLJIT_INLINE sljit_s32 simd_get_quad_reg_index(sljit_s32 freg) |
| { |
| freg += freg & 0x1; |
| |
| SLJIT_ASSERT((freg_map[freg] & 0x1) == (freg <= SLJIT_NUMBER_OF_SCRATCH_FLOAT_REGISTERS)); |
| |
| if (freg <= SLJIT_NUMBER_OF_SCRATCH_FLOAT_REGISTERS) |
| freg--; |
| |
| return freg; |
| } |
| |
| #define SLJIT_QUAD_OTHER_HALF(freg) ((((freg) & 0x1) << 1) - 1) |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_mov(struct sljit_compiler *compiler, sljit_s32 type, |
| sljit_s32 freg, |
| sljit_s32 srcdst, sljit_sw srcdstw) |
| { |
| sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type); |
| sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type); |
| sljit_s32 alignment = SLJIT_SIMD_GET_ELEM2_SIZE(type); |
| sljit_ins ins; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_simd_mov(compiler, type, freg, srcdst, srcdstw)); |
| |
| ADJUST_LOCAL_OFFSET(srcdst, srcdstw); |
| |
| if (reg_size != 3 && reg_size != 4) |
| return SLJIT_ERR_UNSUPPORTED; |
| |
| if ((type & SLJIT_SIMD_FLOAT) && (elem_size < 2 || elem_size > 3)) |
| return SLJIT_ERR_UNSUPPORTED; |
| |
| if (type & SLJIT_SIMD_TEST) |
| return SLJIT_SUCCESS; |
| |
| if (reg_size == 4) |
| freg = simd_get_quad_reg_index(freg); |
| |
| if (!(srcdst & SLJIT_MEM)) { |
| if (reg_size == 4) |
| srcdst = simd_get_quad_reg_index(srcdst); |
| |
| if (type & SLJIT_SIMD_STORE) |
| ins = VD(srcdst) | VN(freg) | VM(freg); |
| else |
| ins = VD(freg) | VN(srcdst) | VM(srcdst); |
| |
| if (reg_size == 4) |
| ins |= (sljit_ins)1 << 6; |
| |
| return push_inst(compiler, VORR | ins); |
| } |
| |
| FAIL_IF(sljit_emit_simd_mem_offset(compiler, &srcdst, srcdstw)); |
| |
| if (elem_size > 3) |
| elem_size = 3; |
| |
| ins = ((type & SLJIT_SIMD_STORE) ? VST1 : VLD1) | VD(freg) |
| | (sljit_ins)((reg_size == 3) ? (0x7 << 8) : (0xa << 8)); |
| |
| SLJIT_ASSERT(reg_size >= alignment); |
| |
| if (alignment == 3) |
| ins |= 0x10; |
| else if (alignment >= 3) |
| ins |= 0x20; |
| |
| return push_inst(compiler, ins | RN(srcdst) | ((sljit_ins)elem_size) << 6 | 0xf); |
| } |
| |
| static sljit_ins simd_get_imm(sljit_s32 elem_size, sljit_uw value) |
| { |
| sljit_ins result; |
| |
| if (elem_size > 1 && (sljit_u16)value == (value >> 16)) { |
| elem_size = 1; |
| value = (sljit_u16)value; |
| } |
| |
| if (elem_size == 1 && (sljit_u8)value == (value >> 8)) { |
| elem_size = 0; |
| value = (sljit_u8)value; |
| } |
| |
| switch (elem_size) { |
| case 0: |
| SLJIT_ASSERT(value <= 0xff); |
| result = 0xe00; |
| break; |
| case 1: |
| SLJIT_ASSERT(value <= 0xffff); |
| result = 0; |
| |
| while (1) { |
| if (value <= 0xff) { |
| result |= 0x800; |
| break; |
| } |
| |
| if ((value & 0xff) == 0) { |
| value >>= 8; |
| result |= 0xa00; |
| break; |
| } |
| |
| if (result != 0) |
| return ~(sljit_ins)0; |
| |
| value ^= (sljit_uw)0xffff; |
| result = (1 << 5); |
| } |
| break; |
| default: |
| SLJIT_ASSERT(value <= 0xffffffff); |
| result = 0; |
| |
| while (1) { |
| if (value <= 0xff) { |
| result |= 0x000; |
| break; |
| } |
| |
| if ((value & ~(sljit_uw)0xff00) == 0) { |
| value >>= 8; |
| result |= 0x200; |
| break; |
| } |
| |
| if ((value & ~(sljit_uw)0xff0000) == 0) { |
| value >>= 16; |
| result |= 0x400; |
| break; |
| } |
| |
| if ((value & ~(sljit_uw)0xff000000) == 0) { |
| value >>= 24; |
| result |= 0x600; |
| break; |
| } |
| |
| if ((value & (sljit_uw)0xff) == 0xff && (value >> 16) == 0) { |
| value >>= 8; |
| result |= 0xc00; |
| break; |
| } |
| |
| if ((value & (sljit_uw)0xffff) == 0xffff && (value >> 24) == 0) { |
| value >>= 16; |
| result |= 0xd00; |
| break; |
| } |
| |
| if (result != 0) |
| return ~(sljit_ins)0; |
| |
| value = ~value; |
| result = (1 << 5); |
| } |
| break; |
| } |
| |
| return ((sljit_ins)value & 0xf) | (((sljit_ins)value & 0x70) << 12) | (((sljit_ins)value & 0x80) << 17) | result; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_replicate(struct sljit_compiler *compiler, sljit_s32 type, |
| sljit_s32 freg, |
| sljit_s32 src, sljit_sw srcw) |
| { |
| sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type); |
| sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type); |
| sljit_ins ins, imm; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_simd_replicate(compiler, type, freg, src, srcw)); |
| |
| ADJUST_LOCAL_OFFSET(src, srcw); |
| |
| if (reg_size != 3 && reg_size != 4) |
| return SLJIT_ERR_UNSUPPORTED; |
| |
| if ((type & SLJIT_SIMD_FLOAT) ? (elem_size < 2 || elem_size > 3) : (elem_size > 2)) |
| return SLJIT_ERR_UNSUPPORTED; |
| |
| if (type & SLJIT_SIMD_TEST) |
| return SLJIT_SUCCESS; |
| |
| if (reg_size == 4) |
| freg = simd_get_quad_reg_index(freg); |
| |
| if (src == SLJIT_IMM && srcw == 0) |
| return push_inst(compiler, VMOV_i | ((reg_size == 4) ? (1 << 6) : 0) | VD(freg)); |
| |
| if (SLJIT_UNLIKELY(elem_size == 3)) { |
| SLJIT_ASSERT(type & SLJIT_SIMD_FLOAT); |
| |
| if (src & SLJIT_MEM) { |
| FAIL_IF(emit_fop_mem(compiler, FPU_LOAD | SLJIT_32, freg, src, srcw)); |
| src = freg; |
| } else if (freg != src) |
| FAIL_IF(push_inst(compiler, VORR | VD(freg) | VN(src) | VM(src))); |
| |
| freg += SLJIT_QUAD_OTHER_HALF(freg); |
| |
| if (freg != src) |
| return push_inst(compiler, VORR | VD(freg) | VN(src) | VM(src)); |
| return SLJIT_SUCCESS; |
| } |
| |
| if (src & SLJIT_MEM) { |
| FAIL_IF(sljit_emit_simd_mem_offset(compiler, &src, srcw)); |
| |
| ins = (sljit_ins)(elem_size << 6); |
| |
| if (reg_size == 4) |
| ins |= (sljit_ins)1 << 5; |
| |
| return push_inst(compiler, VLD1_r | ins | VD(freg) | RN(src) | 0xf); |
| } |
| |
| if (type & SLJIT_SIMD_FLOAT) { |
| SLJIT_ASSERT(elem_size == 2); |
| ins = ((sljit_ins)freg_ebit_map[src] << (16 + 2 + 1)) | ((sljit_ins)1 << (16 + 2)); |
| |
| if (reg_size == 4) |
| ins |= (sljit_ins)1 << 6; |
| |
| return push_inst(compiler, VDUP_s | ins | VD(freg) | (sljit_ins)freg_map[src]); |
| } |
| |
| if (src == SLJIT_IMM) { |
| if (elem_size < 2) |
| srcw &= ((sljit_sw)1 << (((sljit_sw)1 << elem_size) << 3)) - 1; |
| |
| imm = simd_get_imm(elem_size, (sljit_uw)srcw); |
| |
| if (imm != ~(sljit_ins)0) { |
| if (reg_size == 4) |
| imm |= (sljit_ins)1 << 6; |
| |
| return push_inst(compiler, VMOV_i | imm | VD(freg)); |
| } |
| |
| FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_uw)srcw)); |
| src = TMP_REG1; |
| } |
| |
| switch (elem_size) { |
| case 0: |
| ins = 1 << 22; |
| break; |
| case 1: |
| ins = 1 << 5; |
| break; |
| default: |
| ins = 0; |
| break; |
| } |
| |
| if (reg_size == 4) |
| ins |= (sljit_ins)1 << 21; |
| |
| return push_inst(compiler, VDUP | ins | VN(freg) | RD(src)); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_lane_mov(struct sljit_compiler *compiler, sljit_s32 type, |
| sljit_s32 freg, sljit_s32 lane_index, |
| sljit_s32 srcdst, sljit_sw srcdstw) |
| { |
| sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type); |
| sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type); |
| sljit_ins ins; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_simd_lane_mov(compiler, type, freg, lane_index, srcdst, srcdstw)); |
| |
| ADJUST_LOCAL_OFFSET(srcdst, srcdstw); |
| |
| if (reg_size != 3 && reg_size != 4) |
| return SLJIT_ERR_UNSUPPORTED; |
| |
| if ((type & SLJIT_SIMD_FLOAT) ? (elem_size < 2 || elem_size > 3) : (elem_size > 2)) |
| return SLJIT_ERR_UNSUPPORTED; |
| |
| if (type & SLJIT_SIMD_TEST) |
| return SLJIT_SUCCESS; |
| |
| if (reg_size == 4) |
| freg = simd_get_quad_reg_index(freg); |
| |
| if (type & SLJIT_SIMD_LANE_ZERO) { |
| ins = (reg_size == 3) ? 0 : ((sljit_ins)1 << 6); |
| |
| if (type & SLJIT_SIMD_FLOAT) { |
| if (elem_size == 3 && !(srcdst & SLJIT_MEM)) { |
| if (lane_index == 1) |
| freg += SLJIT_QUAD_OTHER_HALF(freg); |
| |
| if (srcdst != freg) |
| FAIL_IF(push_inst(compiler, VORR | VD(freg) | VN(srcdst) | VM(srcdst))); |
| |
| freg += SLJIT_QUAD_OTHER_HALF(freg); |
| return push_inst(compiler, VMOV_i | VD(freg)); |
| } |
| |
| if (srcdst == freg || (elem_size == 3 && srcdst == (freg + SLJIT_QUAD_OTHER_HALF(freg)))) { |
| FAIL_IF(push_inst(compiler, VORR | ins | VD(TMP_FREG2) | VN(freg) | VM(freg))); |
| srcdst = TMP_FREG2; |
| srcdstw = 0; |
| } |
| } |
| |
| FAIL_IF(push_inst(compiler, VMOV_i | ins | VD(freg))); |
| } |
| |
| if (reg_size == 4 && lane_index >= (0x8 >> elem_size)) { |
| lane_index -= (0x8 >> elem_size); |
| freg += SLJIT_QUAD_OTHER_HALF(freg); |
| } |
| |
| if (srcdst & SLJIT_MEM) { |
| if (elem_size == 3) |
| return emit_fop_mem(compiler, ((type & SLJIT_SIMD_STORE) ? 0 : FPU_LOAD) | SLJIT_32, freg, srcdst, srcdstw); |
| |
| FAIL_IF(sljit_emit_simd_mem_offset(compiler, &srcdst, srcdstw)); |
| |
| lane_index = lane_index << elem_size; |
| ins = (sljit_ins)((elem_size << 10) | (lane_index << 5)); |
| return push_inst(compiler, ((type & SLJIT_SIMD_STORE) ? VST1_s : VLD1_s) | ins | VD(freg) | RN(srcdst) | 0xf); |
| } |
| |
| if (type & SLJIT_SIMD_FLOAT) { |
| if (elem_size == 3) { |
| if (type & SLJIT_SIMD_STORE) |
| return push_inst(compiler, VORR | VD(srcdst) | VN(freg) | VM(freg)); |
| return push_inst(compiler, VMOV_F32 | SLJIT_32 | VD(freg) | VM(srcdst)); |
| } |
| |
| if (type & SLJIT_SIMD_STORE) { |
| if (freg_ebit_map[freg] == 0) { |
| if (lane_index == 1) |
| freg = SLJIT_F64_SECOND(freg); |
| |
| return push_inst(compiler, VMOV_F32 | VD(srcdst) | VM(freg)); |
| } |
| |
| FAIL_IF(push_inst(compiler, VMOV_s | (1 << 20) | ((sljit_ins)lane_index << 21) | VN(freg) | RD(TMP_REG1))); |
| return push_inst(compiler, VMOV | VN(srcdst) | RD(TMP_REG1)); |
| } |
| |
| FAIL_IF(push_inst(compiler, VMOV | (1 << 20) | VN(srcdst) | RD(TMP_REG1))); |
| return push_inst(compiler, VMOV_s | ((sljit_ins)lane_index << 21) | VN(freg) | RD(TMP_REG1)); |
| } |
| |
| if (srcdst == SLJIT_IMM) { |
| if (elem_size < 2) |
| srcdstw &= ((sljit_sw)1 << (((sljit_sw)1 << elem_size) << 3)) - 1; |
| |
| FAIL_IF(load_immediate(compiler, TMP_REG1, (sljit_uw)srcdstw)); |
| srcdst = TMP_REG1; |
| } |
| |
| if (elem_size == 0) |
| ins = 0x400000; |
| else if (elem_size == 1) |
| ins = 0x20; |
| else |
| ins = 0; |
| |
| lane_index = lane_index << elem_size; |
| ins |= (sljit_ins)(((lane_index & 0x4) << 19) | ((lane_index & 0x3) << 5)); |
| |
| if (type & SLJIT_SIMD_STORE) { |
| ins |= (1 << 20); |
| |
| if (elem_size < 2 && !(type & SLJIT_SIMD_LANE_SIGNED)) |
| ins |= (1 << 23); |
| } |
| |
| return push_inst(compiler, VMOV_s | ins | VN(freg) | RD(srcdst)); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_lane_replicate(struct sljit_compiler *compiler, sljit_s32 type, |
| sljit_s32 freg, |
| sljit_s32 src, sljit_s32 src_lane_index) |
| { |
| sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type); |
| sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type); |
| sljit_ins ins; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_simd_lane_replicate(compiler, type, freg, src, src_lane_index)); |
| |
| if (reg_size != 3 && reg_size != 4) |
| return SLJIT_ERR_UNSUPPORTED; |
| |
| if ((type & SLJIT_SIMD_FLOAT) && (elem_size < 2 || elem_size > 3)) |
| return SLJIT_ERR_UNSUPPORTED; |
| |
| if (type & SLJIT_SIMD_TEST) |
| return SLJIT_SUCCESS; |
| |
| if (reg_size == 4) { |
| freg = simd_get_quad_reg_index(freg); |
| src = simd_get_quad_reg_index(src); |
| |
| if (src_lane_index >= (0x8 >> elem_size)) { |
| src_lane_index -= (0x8 >> elem_size); |
| src += SLJIT_QUAD_OTHER_HALF(src); |
| } |
| } |
| |
| if (elem_size == 3) { |
| if (freg != src) |
| FAIL_IF(push_inst(compiler, VORR | VD(freg) | VN(src) | VM(src))); |
| |
| freg += SLJIT_QUAD_OTHER_HALF(freg); |
| |
| if (freg != src) |
| return push_inst(compiler, VORR | VD(freg) | VN(src) | VM(src)); |
| return SLJIT_SUCCESS; |
| } |
| |
| ins = ((((sljit_ins)src_lane_index << 1) | 1) << (16 + elem_size)); |
| |
| if (reg_size == 4) |
| ins |= (sljit_ins)1 << 6; |
| |
| return push_inst(compiler, VDUP_s | ins | VD(freg) | VM(src)); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_extend(struct sljit_compiler *compiler, sljit_s32 type, |
| sljit_s32 freg, |
| sljit_s32 src, sljit_sw srcw) |
| { |
| sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type); |
| sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type); |
| sljit_s32 elem2_size = SLJIT_SIMD_GET_ELEM2_SIZE(type); |
| sljit_s32 dst_reg; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_simd_extend(compiler, type, freg, src, srcw)); |
| |
| ADJUST_LOCAL_OFFSET(src, srcw); |
| |
| if (reg_size != 3 && reg_size != 4) |
| return SLJIT_ERR_UNSUPPORTED; |
| |
| if ((type & SLJIT_SIMD_FLOAT) && (elem_size != 2 || elem2_size != 3)) |
| return SLJIT_ERR_UNSUPPORTED; |
| |
| if (type & SLJIT_SIMD_TEST) |
| return SLJIT_SUCCESS; |
| |
| if (reg_size == 4) |
| freg = simd_get_quad_reg_index(freg); |
| |
| if (src & SLJIT_MEM) { |
| FAIL_IF(sljit_emit_simd_mem_offset(compiler, &src, srcw)); |
| if (reg_size == 4 && elem2_size - elem_size == 1) |
| FAIL_IF(push_inst(compiler, VLD1 | (0x7 << 8) | VD(freg) | RN(src) | 0xf)); |
| else |
| FAIL_IF(push_inst(compiler, VLD1_s | (sljit_ins)((reg_size - elem2_size + elem_size) << 10) | VD(freg) | RN(src) | 0xf)); |
| src = freg; |
| } else if (reg_size == 4) |
| src = simd_get_quad_reg_index(src); |
| |
| if (!(type & SLJIT_SIMD_FLOAT)) { |
| dst_reg = (reg_size == 4) ? freg : TMP_FREG2; |
| |
| do { |
| FAIL_IF(push_inst(compiler, VSHLL | ((type & SLJIT_SIMD_EXTEND_SIGNED) ? 0 : (1 << 24)) |
| | ((sljit_ins)1 << (19 + elem_size)) | VD(dst_reg) | VM(src))); |
| src = dst_reg; |
| } while (++elem_size < elem2_size); |
| |
| if (dst_reg == TMP_FREG2) |
| return push_inst(compiler, VORR | VD(freg) | VN(TMP_FREG2) | VM(TMP_FREG2)); |
| return SLJIT_SUCCESS; |
| } |
| |
| /* No SIMD variant, must use VFP instead. */ |
| SLJIT_ASSERT(reg_size == 4); |
| |
| if (freg == src) { |
| freg += SLJIT_QUAD_OTHER_HALF(freg); |
| FAIL_IF(push_inst(compiler, VCVT_F64_F32 | VD(freg) | VM(src) | 0x20)); |
| freg += SLJIT_QUAD_OTHER_HALF(freg); |
| return push_inst(compiler, VCVT_F64_F32 | VD(freg) | VM(src)); |
| } |
| |
| FAIL_IF(push_inst(compiler, VCVT_F64_F32 | VD(freg) | VM(src))); |
| freg += SLJIT_QUAD_OTHER_HALF(freg); |
| return push_inst(compiler, VCVT_F64_F32 | VD(freg) | VM(src) | 0x20); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_sign(struct sljit_compiler *compiler, sljit_s32 type, |
| sljit_s32 freg, |
| sljit_s32 dst, sljit_sw dstw) |
| { |
| sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type); |
| sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type); |
| sljit_ins ins, imms; |
| sljit_s32 dst_r; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_simd_sign(compiler, type, freg, dst, dstw)); |
| |
| ADJUST_LOCAL_OFFSET(dst, dstw); |
| |
| if (reg_size != 3 && reg_size != 4) |
| return SLJIT_ERR_UNSUPPORTED; |
| |
| if ((type & SLJIT_SIMD_FLOAT) && (elem_size < 2 || elem_size > 3)) |
| return SLJIT_ERR_UNSUPPORTED; |
| |
| if (type & SLJIT_SIMD_TEST) |
| return SLJIT_SUCCESS; |
| |
| switch (elem_size) { |
| case 0: |
| imms = 0x243219; |
| ins = VSHR | (1 << 24) | (0x9 << 16); |
| break; |
| case 1: |
| imms = (reg_size == 4) ? 0x243219 : 0x2231; |
| ins = VSHR | (1 << 24) | (0x11 << 16); |
| break; |
| case 2: |
| imms = (reg_size == 4) ? 0x2231 : 0x21; |
| ins = VSHR | (1 << 24) | (0x21 << 16); |
| break; |
| default: |
| imms = 0x21; |
| ins = VSHR | (1 << 24) | (0x1 << 16) | (1 << 7); |
| break; |
| } |
| |
| if (reg_size == 4) { |
| freg = simd_get_quad_reg_index(freg); |
| ins |= (sljit_ins)1 << 6; |
| } |
| |
| SLJIT_ASSERT((freg_map[TMP_FREG2] & 0x1) == 0); |
| FAIL_IF(push_inst(compiler, ins | VD(TMP_FREG2) | VM(freg))); |
| |
| if (reg_size == 4 && elem_size > 0) |
| FAIL_IF(push_inst(compiler, VMOVN | ((sljit_ins)(elem_size - 1) << 18) | VD(TMP_FREG2) | VM(TMP_FREG2))); |
| |
| ins = (reg_size == 4 && elem_size == 0) ? (1 << 6) : 0; |
| |
| while (imms >= 0x100) { |
| FAIL_IF(push_inst(compiler, VSRA | (1 << 24) | ins | ((imms & 0xff) << 16) | VD(TMP_FREG2) | VM(TMP_FREG2))); |
| imms >>= 8; |
| } |
| |
| FAIL_IF(push_inst(compiler, VSRA | (1 << 24) | ins | (1 << 7) | (imms << 16) | VD(TMP_FREG2) | VM(TMP_FREG2))); |
| |
| dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1; |
| FAIL_IF(push_inst(compiler, VMOV_s | (1 << 20) | (1 << 23) | (0x2 << 21) | RD(dst_r) | VN(TMP_FREG2))); |
| |
| if (reg_size == 4 && elem_size == 0) { |
| SLJIT_ASSERT(freg_map[TMP_FREG2] + 1 == freg_map[TMP_FREG1]); |
| FAIL_IF(push_inst(compiler, VMOV_s | (1 << 20) | (1 << 23) | (0x2 << 21) | RD(TMP_REG2) | VN(TMP_FREG1))); |
| FAIL_IF(push_inst(compiler, ORR | RD(dst_r) | RN(dst_r) | RM(TMP_REG2) | (0x8 << 7))); |
| } |
| |
| if (dst_r == TMP_REG1) |
| return emit_op_mem(compiler, WORD_SIZE, TMP_REG1, dst, dstw, TMP_REG2); |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_simd_op2(struct sljit_compiler *compiler, sljit_s32 type, |
| sljit_s32 dst_freg, sljit_s32 src1_freg, sljit_s32 src2_freg) |
| { |
| sljit_s32 reg_size = SLJIT_SIMD_GET_REG_SIZE(type); |
| sljit_s32 elem_size = SLJIT_SIMD_GET_ELEM_SIZE(type); |
| sljit_ins ins = 0; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_simd_op2(compiler, type, dst_freg, src1_freg, src2_freg)); |
| |
| if (reg_size != 3 && reg_size != 4) |
| return SLJIT_ERR_UNSUPPORTED; |
| |
| if ((type & SLJIT_SIMD_FLOAT) && (elem_size < 2 || elem_size > 3)) |
| return SLJIT_ERR_UNSUPPORTED; |
| |
| switch (SLJIT_SIMD_GET_OPCODE(type)) { |
| case SLJIT_SIMD_OP2_AND: |
| ins = VAND; |
| break; |
| case SLJIT_SIMD_OP2_OR: |
| ins = VORR; |
| break; |
| case SLJIT_SIMD_OP2_XOR: |
| ins = VEOR; |
| break; |
| } |
| |
| if (type & SLJIT_SIMD_TEST) |
| return SLJIT_SUCCESS; |
| |
| if (reg_size == 4) { |
| dst_freg = simd_get_quad_reg_index(dst_freg); |
| src1_freg = simd_get_quad_reg_index(src1_freg); |
| src2_freg = simd_get_quad_reg_index(src2_freg); |
| ins |= (sljit_ins)1 << 6; |
| } |
| |
| return push_inst(compiler, ins | VD(dst_freg) | VN(src1_freg) | VM(src2_freg)); |
| } |
| |
| #undef FPU_LOAD |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_atomic_load(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 dst_reg, |
| sljit_s32 mem_reg) |
| { |
| sljit_u32 ins; |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_atomic_load(compiler, op, dst_reg, mem_reg)); |
| |
| switch (GET_OPCODE(op)) { |
| case SLJIT_MOV_U8: |
| ins = LDREXB; |
| break; |
| case SLJIT_MOV_U16: |
| ins = LDREXH; |
| break; |
| default: |
| ins = LDREX; |
| break; |
| } |
| |
| return push_inst(compiler, ins | RN(mem_reg) | RD(dst_reg)); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_atomic_store(struct sljit_compiler *compiler, sljit_s32 op, |
| sljit_s32 src_reg, |
| sljit_s32 mem_reg, |
| sljit_s32 temp_reg) |
| { |
| sljit_u32 ins; |
| |
| /* temp_reg == mem_reg is undefined so use another temp register */ |
| SLJIT_UNUSED_ARG(temp_reg); |
| |
| CHECK_ERROR(); |
| CHECK(check_sljit_emit_atomic_store(compiler, op, src_reg, mem_reg, temp_reg)); |
| |
| switch (GET_OPCODE(op)) { |
| case SLJIT_MOV_U8: |
| ins = STREXB; |
| break; |
| case SLJIT_MOV_U16: |
| ins = STREXH; |
| break; |
| default: |
| ins = STREX; |
| break; |
| } |
| |
| FAIL_IF(push_inst(compiler, ins | RN(mem_reg) | RD(TMP_REG1) | RM(src_reg))); |
| if (op & SLJIT_SET_ATOMIC_STORED) |
| return push_inst(compiler, CMP | SET_FLAGS | SRC2_IMM | RN(TMP_REG1)); |
| |
| return SLJIT_SUCCESS; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE struct sljit_const* sljit_emit_const(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw, sljit_sw init_value) |
| { |
| struct sljit_const *const_; |
| sljit_s32 dst_r; |
| |
| CHECK_ERROR_PTR(); |
| CHECK_PTR(check_sljit_emit_const(compiler, dst, dstw, init_value)); |
| ADJUST_LOCAL_OFFSET(dst, dstw); |
| |
| dst_r = FAST_IS_REG(dst) ? dst : TMP_REG2; |
| |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| PTR_FAIL_IF(push_inst_with_unique_literal(compiler, |
| EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1, dst_r, TMP_PC, 0), (sljit_ins)init_value)); |
| compiler->patches++; |
| #else /* !SLJIT_CONFIG_ARM_V6 */ |
| PTR_FAIL_IF(emit_imm(compiler, dst_r, init_value)); |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| |
| const_ = (struct sljit_const*)ensure_abuf(compiler, sizeof(struct sljit_const)); |
| PTR_FAIL_IF(!const_); |
| set_const(const_, compiler); |
| |
| if (dst & SLJIT_MEM) |
| PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG2, dst, dstw, TMP_REG1)); |
| return const_; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE struct sljit_put_label* sljit_emit_put_label(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw) |
| { |
| struct sljit_put_label *put_label; |
| sljit_s32 dst_r; |
| |
| CHECK_ERROR_PTR(); |
| CHECK_PTR(check_sljit_emit_put_label(compiler, dst, dstw)); |
| ADJUST_LOCAL_OFFSET(dst, dstw); |
| |
| dst_r = FAST_IS_REG(dst) ? dst : TMP_REG2; |
| |
| #if (defined SLJIT_CONFIG_ARM_V6 && SLJIT_CONFIG_ARM_V6) |
| PTR_FAIL_IF(push_inst_with_unique_literal(compiler, EMIT_DATA_TRANSFER(WORD_SIZE | LOAD_DATA, 1, dst_r, TMP_PC, 0), 0)); |
| compiler->patches++; |
| #else /* !SLJIT_CONFIG_ARM_V6 */ |
| PTR_FAIL_IF(emit_imm(compiler, dst_r, 0)); |
| #endif /* SLJIT_CONFIG_ARM_V6 */ |
| |
| put_label = (struct sljit_put_label*)ensure_abuf(compiler, sizeof(struct sljit_put_label)); |
| PTR_FAIL_IF(!put_label); |
| set_put_label(put_label, compiler, 0); |
| |
| if (dst & SLJIT_MEM) |
| PTR_FAIL_IF(emit_op_mem(compiler, WORD_SIZE, TMP_REG2, dst, dstw, TMP_REG1)); |
| return put_label; |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE void sljit_set_jump_addr(sljit_uw addr, sljit_uw new_target, sljit_sw executable_offset) |
| { |
| inline_set_jump_addr(addr, executable_offset, new_target, 1); |
| } |
| |
| SLJIT_API_FUNC_ATTRIBUTE void sljit_set_const(sljit_uw addr, sljit_sw new_constant, sljit_sw executable_offset) |
| { |
| inline_set_const(addr, executable_offset, (sljit_uw)new_constant, 1); |
| } |