| /************************************************************************** |
| * |
| * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
| * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| **************************************************************************/ |
| |
| #include "pipe/p_config.h" |
| #include "util/u_cpu_detect.h" |
| |
| #if defined(PIPE_ARCH_X86) || (defined(PIPE_ARCH_X86_64) && !defined(__MINGW32__)) |
| |
| #include "pipe/p_compiler.h" |
| #include "util/u_debug.h" |
| #include "util/u_pointer.h" |
| |
| #include "rtasm_execmem.h" |
| #include "rtasm_x86sse.h" |
| |
| #define DISASSEM 0 |
| #define X86_TWOB 0x0f |
| |
| |
| #define DUMP_SSE 0 |
| |
| |
| void x86_print_reg( struct x86_reg reg ) |
| { |
| if (reg.mod != mod_REG) |
| debug_printf( "[" ); |
| |
| switch( reg.file ) { |
| case file_REG32: |
| switch( reg.idx ) { |
| case reg_AX: debug_printf( "EAX" ); break; |
| case reg_CX: debug_printf( "ECX" ); break; |
| case reg_DX: debug_printf( "EDX" ); break; |
| case reg_BX: debug_printf( "EBX" ); break; |
| case reg_SP: debug_printf( "ESP" ); break; |
| case reg_BP: debug_printf( "EBP" ); break; |
| case reg_SI: debug_printf( "ESI" ); break; |
| case reg_DI: debug_printf( "EDI" ); break; |
| } |
| break; |
| case file_MMX: |
| debug_printf( "MMX%u", reg.idx ); |
| break; |
| case file_XMM: |
| debug_printf( "XMM%u", reg.idx ); |
| break; |
| case file_x87: |
| debug_printf( "fp%u", reg.idx ); |
| break; |
| } |
| |
| if (reg.mod == mod_DISP8 || |
| reg.mod == mod_DISP32) |
| debug_printf("+%d", reg.disp); |
| |
| if (reg.mod != mod_REG) |
| debug_printf( "]" ); |
| } |
| |
| #if DUMP_SSE |
| |
| #define DUMP_START() debug_printf( "\n" ) |
| #define DUMP_END() debug_printf( "\n" ) |
| |
| #define DUMP() do { \ |
| const char *foo = __FUNCTION__; \ |
| while (*foo && *foo != '_') \ |
| foo++; \ |
| if (*foo) \ |
| foo++; \ |
| debug_printf( "\n%4x %14s ", p->csr - p->store, foo ); \ |
| } while (0) |
| |
| #define DUMP_I( I ) do { \ |
| DUMP(); \ |
| debug_printf( "%u", I ); \ |
| } while( 0 ) |
| |
| #define DUMP_R( R0 ) do { \ |
| DUMP(); \ |
| x86_print_reg( R0 ); \ |
| } while( 0 ) |
| |
| #define DUMP_RR( R0, R1 ) do { \ |
| DUMP(); \ |
| x86_print_reg( R0 ); \ |
| debug_printf( ", " ); \ |
| x86_print_reg( R1 ); \ |
| } while( 0 ) |
| |
| #define DUMP_RI( R0, I ) do { \ |
| DUMP(); \ |
| x86_print_reg( R0 ); \ |
| debug_printf( ", %u", I ); \ |
| } while( 0 ) |
| |
| #define DUMP_RRI( R0, R1, I ) do { \ |
| DUMP(); \ |
| x86_print_reg( R0 ); \ |
| debug_printf( ", " ); \ |
| x86_print_reg( R1 ); \ |
| debug_printf( ", %u", I ); \ |
| } while( 0 ) |
| |
| #else |
| |
| #define DUMP_START() |
| #define DUMP_END() |
| #define DUMP( ) |
| #define DUMP_I( I ) |
| #define DUMP_R( R0 ) |
| #define DUMP_RR( R0, R1 ) |
| #define DUMP_RI( R0, I ) |
| #define DUMP_RRI( R0, R1, I ) |
| |
| #endif |
| |
| |
| static void do_realloc( struct x86_function *p ) |
| { |
| if (p->store == p->error_overflow) { |
| p->csr = p->store; |
| } |
| else if (p->size == 0) { |
| p->size = 1024; |
| p->store = rtasm_exec_malloc(p->size); |
| p->csr = p->store; |
| } |
| else { |
| uintptr_t used = pointer_to_uintptr( p->csr ) - pointer_to_uintptr( p->store ); |
| unsigned char *tmp = p->store; |
| p->size *= 2; |
| p->store = rtasm_exec_malloc(p->size); |
| |
| if (p->store) { |
| memcpy(p->store, tmp, used); |
| p->csr = p->store + used; |
| } |
| else { |
| p->csr = p->store; |
| } |
| |
| rtasm_exec_free(tmp); |
| } |
| |
| if (p->store == NULL) { |
| p->store = p->csr = p->error_overflow; |
| p->size = sizeof(p->error_overflow); |
| } |
| } |
| |
| /* Emit bytes to the instruction stream: |
| */ |
| static unsigned char *reserve( struct x86_function *p, int bytes ) |
| { |
| if (p->csr + bytes - p->store > (int) p->size) |
| do_realloc(p); |
| |
| { |
| unsigned char *csr = p->csr; |
| p->csr += bytes; |
| return csr; |
| } |
| } |
| |
| |
| |
| static void emit_1b( struct x86_function *p, char b0 ) |
| { |
| char *csr = (char *)reserve(p, 1); |
| *csr = b0; |
| } |
| |
| static void emit_1i( struct x86_function *p, int i0 ) |
| { |
| int *icsr = (int *)reserve(p, sizeof(i0)); |
| *icsr = i0; |
| } |
| |
| static void emit_1ub( struct x86_function *p, unsigned char b0 ) |
| { |
| unsigned char *csr = reserve(p, 1); |
| *csr++ = b0; |
| } |
| |
| static void emit_2ub( struct x86_function *p, unsigned char b0, unsigned char b1 ) |
| { |
| unsigned char *csr = reserve(p, 2); |
| *csr++ = b0; |
| *csr++ = b1; |
| } |
| |
| static void emit_3ub( struct x86_function *p, unsigned char b0, unsigned char b1, unsigned char b2 ) |
| { |
| unsigned char *csr = reserve(p, 3); |
| *csr++ = b0; |
| *csr++ = b1; |
| *csr++ = b2; |
| } |
| |
| |
| /* Build a modRM byte + possible displacement. No treatment of SIB |
| * indexing. BZZT - no way to encode an absolute address. |
| * |
| * This is the "/r" field in the x86 manuals... |
| */ |
| static void emit_modrm( struct x86_function *p, |
| struct x86_reg reg, |
| struct x86_reg regmem ) |
| { |
| unsigned char val = 0; |
| |
| assert(reg.mod == mod_REG); |
| |
| /* TODO: support extended x86-64 registers */ |
| assert(reg.idx < 8); |
| assert(regmem.idx < 8); |
| |
| val |= regmem.mod << 6; /* mod field */ |
| val |= reg.idx << 3; /* reg field */ |
| val |= regmem.idx; /* r/m field */ |
| |
| emit_1ub(p, val); |
| |
| /* Oh-oh we've stumbled into the SIB thing. |
| */ |
| if (regmem.file == file_REG32 && |
| regmem.idx == reg_SP && |
| regmem.mod != mod_REG) { |
| emit_1ub(p, 0x24); /* simplistic! */ |
| } |
| |
| switch (regmem.mod) { |
| case mod_REG: |
| case mod_INDIRECT: |
| break; |
| case mod_DISP8: |
| emit_1b(p, (char) regmem.disp); |
| break; |
| case mod_DISP32: |
| emit_1i(p, regmem.disp); |
| break; |
| default: |
| assert(0); |
| break; |
| } |
| } |
| |
| /* Emits the "/0".."/7" specialized versions of the modrm ("/r") bytes. |
| */ |
| static void emit_modrm_noreg( struct x86_function *p, |
| unsigned op, |
| struct x86_reg regmem ) |
| { |
| struct x86_reg dummy = x86_make_reg(file_REG32, op); |
| emit_modrm(p, dummy, regmem); |
| } |
| |
| /* Many x86 instructions have two opcodes to cope with the situations |
| * where the destination is a register or memory reference |
| * respectively. This function selects the correct opcode based on |
| * the arguments presented. |
| */ |
| static void emit_op_modrm( struct x86_function *p, |
| unsigned char op_dst_is_reg, |
| unsigned char op_dst_is_mem, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| switch (dst.mod) { |
| case mod_REG: |
| emit_1ub(p, op_dst_is_reg); |
| emit_modrm(p, dst, src); |
| break; |
| case mod_INDIRECT: |
| case mod_DISP32: |
| case mod_DISP8: |
| assert(src.mod == mod_REG); |
| emit_1ub(p, op_dst_is_mem); |
| emit_modrm(p, src, dst); |
| break; |
| default: |
| assert(0); |
| break; |
| } |
| } |
| |
| |
| |
| |
| |
| |
| |
| /* Create and manipulate registers and regmem values: |
| */ |
| struct x86_reg x86_make_reg( enum x86_reg_file file, |
| enum x86_reg_name idx ) |
| { |
| struct x86_reg reg; |
| |
| reg.file = file; |
| reg.idx = idx; |
| reg.mod = mod_REG; |
| reg.disp = 0; |
| |
| return reg; |
| } |
| |
| struct x86_reg x86_make_disp( struct x86_reg reg, |
| int disp ) |
| { |
| assert(reg.file == file_REG32); |
| |
| if (reg.mod == mod_REG) |
| reg.disp = disp; |
| else |
| reg.disp += disp; |
| |
| if (reg.disp == 0 && reg.idx != reg_BP) |
| reg.mod = mod_INDIRECT; |
| else if (reg.disp <= 127 && reg.disp >= -128) |
| reg.mod = mod_DISP8; |
| else |
| reg.mod = mod_DISP32; |
| |
| return reg; |
| } |
| |
| struct x86_reg x86_deref( struct x86_reg reg ) |
| { |
| return x86_make_disp(reg, 0); |
| } |
| |
| struct x86_reg x86_get_base_reg( struct x86_reg reg ) |
| { |
| return x86_make_reg( reg.file, reg.idx ); |
| } |
| |
| int x86_get_label( struct x86_function *p ) |
| { |
| return p->csr - p->store; |
| } |
| |
| |
| |
| /*********************************************************************** |
| * x86 instructions |
| */ |
| |
| |
| void x64_rexw(struct x86_function *p) |
| { |
| if(x86_target(p) != X86_32) |
| emit_1ub(p, 0x48); |
| } |
| |
| void x86_jcc( struct x86_function *p, |
| enum x86_cc cc, |
| int label ) |
| { |
| int offset = label - (x86_get_label(p) + 2); |
| DUMP_I(cc); |
| |
| if (offset < 0) { |
| /*assert(p->csr - p->store > -offset);*/ |
| if (p->csr - p->store <= -offset) { |
| /* probably out of memory (using the error_overflow buffer) */ |
| return; |
| } |
| } |
| |
| if (offset <= 127 && offset >= -128) { |
| emit_1ub(p, 0x70 + cc); |
| emit_1b(p, (char) offset); |
| } |
| else { |
| offset = label - (x86_get_label(p) + 6); |
| emit_2ub(p, 0x0f, 0x80 + cc); |
| emit_1i(p, offset); |
| } |
| } |
| |
| /* Always use a 32bit offset for forward jumps: |
| */ |
| int x86_jcc_forward( struct x86_function *p, |
| enum x86_cc cc ) |
| { |
| DUMP_I(cc); |
| emit_2ub(p, 0x0f, 0x80 + cc); |
| emit_1i(p, 0); |
| return x86_get_label(p); |
| } |
| |
| int x86_jmp_forward( struct x86_function *p) |
| { |
| DUMP(); |
| emit_1ub(p, 0xe9); |
| emit_1i(p, 0); |
| return x86_get_label(p); |
| } |
| |
| int x86_call_forward( struct x86_function *p) |
| { |
| DUMP(); |
| |
| emit_1ub(p, 0xe8); |
| emit_1i(p, 0); |
| return x86_get_label(p); |
| } |
| |
| /* Fixup offset from forward jump: |
| */ |
| void x86_fixup_fwd_jump( struct x86_function *p, |
| int fixup ) |
| { |
| *(int *)(p->store + fixup - 4) = x86_get_label(p) - fixup; |
| } |
| |
| void x86_jmp( struct x86_function *p, int label) |
| { |
| DUMP_I( label ); |
| emit_1ub(p, 0xe9); |
| emit_1i(p, label - x86_get_label(p) - 4); |
| } |
| |
| void x86_call( struct x86_function *p, struct x86_reg reg) |
| { |
| DUMP_R( reg ); |
| emit_1ub(p, 0xff); |
| emit_modrm_noreg(p, 2, reg); |
| } |
| |
| |
| void x86_mov_reg_imm( struct x86_function *p, struct x86_reg dst, int imm ) |
| { |
| DUMP_RI( dst, imm ); |
| assert(dst.file == file_REG32); |
| assert(dst.mod == mod_REG); |
| emit_1ub(p, 0xb8 + dst.idx); |
| emit_1i(p, imm); |
| } |
| |
| void x86_mov_imm( struct x86_function *p, struct x86_reg dst, int imm ) |
| { |
| DUMP_RI( dst, imm ); |
| if(dst.mod == mod_REG) |
| x86_mov_reg_imm(p, dst, imm); |
| else |
| { |
| emit_1ub(p, 0xc7); |
| emit_modrm_noreg(p, 0, dst); |
| emit_1i(p, imm); |
| } |
| } |
| |
| void x86_mov16_imm( struct x86_function *p, struct x86_reg dst, uint16_t imm ) |
| { |
| DUMP_RI( dst, imm ); |
| emit_1ub(p, 0x66); |
| if(dst.mod == mod_REG) |
| { |
| emit_1ub(p, 0xb8 + dst.idx); |
| emit_2ub(p, imm & 0xff, imm >> 8); |
| } |
| else |
| { |
| emit_1ub(p, 0xc7); |
| emit_modrm_noreg(p, 0, dst); |
| emit_2ub(p, imm & 0xff, imm >> 8); |
| } |
| } |
| |
| void x86_mov8_imm( struct x86_function *p, struct x86_reg dst, uint8_t imm ) |
| { |
| DUMP_RI( dst, imm ); |
| if(dst.mod == mod_REG) |
| { |
| emit_1ub(p, 0xb0 + dst.idx); |
| emit_1ub(p, imm); |
| } |
| else |
| { |
| emit_1ub(p, 0xc6); |
| emit_modrm_noreg(p, 0, dst); |
| emit_1ub(p, imm); |
| } |
| } |
| |
| /** |
| * Immediate group 1 instructions. |
| */ |
| static INLINE void |
| x86_group1_imm( struct x86_function *p, |
| unsigned op, struct x86_reg dst, int imm ) |
| { |
| assert(dst.file == file_REG32); |
| assert(dst.mod == mod_REG); |
| if(-0x80 <= imm && imm < 0x80) { |
| emit_1ub(p, 0x83); |
| emit_modrm_noreg(p, op, dst); |
| emit_1b(p, (char)imm); |
| } |
| else { |
| emit_1ub(p, 0x81); |
| emit_modrm_noreg(p, op, dst); |
| emit_1i(p, imm); |
| } |
| } |
| |
| void x86_add_imm( struct x86_function *p, struct x86_reg dst, int imm ) |
| { |
| DUMP_RI( dst, imm ); |
| x86_group1_imm(p, 0, dst, imm); |
| } |
| |
| void x86_or_imm( struct x86_function *p, struct x86_reg dst, int imm ) |
| { |
| DUMP_RI( dst, imm ); |
| x86_group1_imm(p, 1, dst, imm); |
| } |
| |
| void x86_and_imm( struct x86_function *p, struct x86_reg dst, int imm ) |
| { |
| DUMP_RI( dst, imm ); |
| x86_group1_imm(p, 4, dst, imm); |
| } |
| |
| void x86_sub_imm( struct x86_function *p, struct x86_reg dst, int imm ) |
| { |
| DUMP_RI( dst, imm ); |
| x86_group1_imm(p, 5, dst, imm); |
| } |
| |
| void x86_xor_imm( struct x86_function *p, struct x86_reg dst, int imm ) |
| { |
| DUMP_RI( dst, imm ); |
| x86_group1_imm(p, 6, dst, imm); |
| } |
| |
| void x86_cmp_imm( struct x86_function *p, struct x86_reg dst, int imm ) |
| { |
| DUMP_RI( dst, imm ); |
| x86_group1_imm(p, 7, dst, imm); |
| } |
| |
| |
| void x86_push( struct x86_function *p, |
| struct x86_reg reg ) |
| { |
| DUMP_R( reg ); |
| if (reg.mod == mod_REG) |
| emit_1ub(p, 0x50 + reg.idx); |
| else |
| { |
| emit_1ub(p, 0xff); |
| emit_modrm_noreg(p, 6, reg); |
| } |
| |
| |
| p->stack_offset += sizeof(void*); |
| } |
| |
| void x86_push_imm32( struct x86_function *p, |
| int imm32 ) |
| { |
| DUMP_I( imm32 ); |
| emit_1ub(p, 0x68); |
| emit_1i(p, imm32); |
| |
| p->stack_offset += sizeof(void*); |
| } |
| |
| |
| void x86_pop( struct x86_function *p, |
| struct x86_reg reg ) |
| { |
| DUMP_R( reg ); |
| assert(reg.mod == mod_REG); |
| emit_1ub(p, 0x58 + reg.idx); |
| p->stack_offset -= sizeof(void*); |
| } |
| |
| void x86_inc( struct x86_function *p, |
| struct x86_reg reg ) |
| { |
| DUMP_R( reg ); |
| if(x86_target(p) == X86_32 && reg.mod == mod_REG) |
| { |
| emit_1ub(p, 0x40 + reg.idx); |
| return; |
| } |
| emit_1ub(p, 0xff); |
| emit_modrm_noreg(p, 0, reg); |
| } |
| |
| void x86_dec( struct x86_function *p, |
| struct x86_reg reg ) |
| { |
| DUMP_R( reg ); |
| if(x86_target(p) == X86_32 && reg.mod == mod_REG) |
| { |
| emit_1ub(p, 0x48 + reg.idx); |
| return; |
| } |
| emit_1ub(p, 0xff); |
| emit_modrm_noreg(p, 1, reg); |
| } |
| |
| void x86_ret( struct x86_function *p ) |
| { |
| DUMP(); |
| assert(p->stack_offset == 0); |
| emit_1ub(p, 0xc3); |
| } |
| |
| void x86_retw( struct x86_function *p, unsigned short imm ) |
| { |
| DUMP(); |
| emit_3ub(p, 0xc2, imm & 0xff, (imm >> 8) & 0xff); |
| } |
| |
| void x86_sahf( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_1ub(p, 0x9e); |
| } |
| |
| void x86_mov( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| /* special hack for reading arguments until we support x86-64 registers everywhere */ |
| if(src.mod == mod_REG && dst.mod == mod_REG && (src.idx >= 8 || dst.idx >= 8)) |
| { |
| uint8_t rex = 0x40; |
| if(dst.idx >= 8) |
| { |
| rex |= 4; |
| dst.idx -= 8; |
| } |
| if(src.idx >= 8) |
| { |
| rex |= 1; |
| src.idx -= 8; |
| } |
| emit_1ub(p, rex); |
| } |
| emit_op_modrm( p, 0x8b, 0x89, dst, src ); |
| } |
| |
| void x86_mov16( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_1ub(p, 0x66); |
| emit_op_modrm( p, 0x8b, 0x89, dst, src ); |
| } |
| |
| void x86_mov8( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_op_modrm( p, 0x8a, 0x88, dst, src ); |
| } |
| |
| void x64_mov64( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| uint8_t rex = 0x48; |
| DUMP_RR( dst, src ); |
| assert(x86_target(p) != X86_32); |
| |
| /* special hack for reading arguments until we support x86-64 registers everywhere */ |
| if(src.mod == mod_REG && dst.mod == mod_REG && (src.idx >= 8 || dst.idx >= 8)) |
| { |
| if(dst.idx >= 8) |
| { |
| rex |= 4; |
| dst.idx -= 8; |
| } |
| if(src.idx >= 8) |
| { |
| rex |= 1; |
| src.idx -= 8; |
| } |
| } |
| emit_1ub(p, rex); |
| emit_op_modrm( p, 0x8b, 0x89, dst, src ); |
| } |
| |
| void x86_movzx8(struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub(p, 0x0f, 0xb6); |
| emit_modrm(p, dst, src); |
| } |
| |
| void x86_movzx16(struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub(p, 0x0f, 0xb7); |
| emit_modrm(p, dst, src); |
| } |
| |
| void x86_cmovcc( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src, |
| enum x86_cc cc) |
| { |
| DUMP_RRI( dst, src, cc ); |
| emit_2ub( p, 0x0f, 0x40 + cc ); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void x86_xor( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_op_modrm( p, 0x33, 0x31, dst, src ); |
| } |
| |
| void x86_cmp( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_op_modrm( p, 0x3b, 0x39, dst, src ); |
| } |
| |
| void x86_lea( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_1ub(p, 0x8d); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void x86_test( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_1ub(p, 0x85); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void x86_add( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_op_modrm(p, 0x03, 0x01, dst, src ); |
| } |
| |
| /* Calculate EAX * src, results in EDX:EAX. |
| */ |
| void x86_mul( struct x86_function *p, |
| struct x86_reg src ) |
| { |
| DUMP_R( src ); |
| emit_1ub(p, 0xf7); |
| emit_modrm_noreg(p, 4, src ); |
| } |
| |
| |
| void x86_imul( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub(p, X86_TWOB, 0xAF); |
| emit_modrm(p, dst, src); |
| } |
| |
| |
| void x86_sub( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_op_modrm(p, 0x2b, 0x29, dst, src ); |
| } |
| |
| void x86_or( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_op_modrm( p, 0x0b, 0x09, dst, src ); |
| } |
| |
| void x86_and( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_op_modrm( p, 0x23, 0x21, dst, src ); |
| } |
| |
| void x86_div( struct x86_function *p, |
| struct x86_reg src ) |
| { |
| assert(src.file == file_REG32 && src.mod == mod_REG); |
| emit_op_modrm(p, 0xf7, 0, x86_make_reg(file_REG32, 6), src); |
| } |
| |
| void x86_bswap( struct x86_function *p, struct x86_reg reg ) |
| { |
| DUMP_R(reg); |
| assert(reg.file == file_REG32); |
| assert(reg.mod == mod_REG); |
| emit_2ub(p, 0x0f, 0xc8 + reg.idx); |
| } |
| |
| void x86_shr_imm( struct x86_function *p, struct x86_reg reg, unsigned imm ) |
| { |
| DUMP_RI(reg, imm); |
| if(imm == 1) |
| { |
| emit_1ub(p, 0xd1); |
| emit_modrm_noreg(p, 5, reg); |
| } |
| else |
| { |
| emit_1ub(p, 0xc1); |
| emit_modrm_noreg(p, 5, reg); |
| emit_1ub(p, imm); |
| } |
| } |
| |
| void x86_sar_imm( struct x86_function *p, struct x86_reg reg, unsigned imm ) |
| { |
| DUMP_RI(reg, imm); |
| if(imm == 1) |
| { |
| emit_1ub(p, 0xd1); |
| emit_modrm_noreg(p, 7, reg); |
| } |
| else |
| { |
| emit_1ub(p, 0xc1); |
| emit_modrm_noreg(p, 7, reg); |
| emit_1ub(p, imm); |
| } |
| } |
| |
| void x86_shl_imm( struct x86_function *p, struct x86_reg reg, unsigned imm ) |
| { |
| DUMP_RI(reg, imm); |
| if(imm == 1) |
| { |
| emit_1ub(p, 0xd1); |
| emit_modrm_noreg(p, 4, reg); |
| } |
| else |
| { |
| emit_1ub(p, 0xc1); |
| emit_modrm_noreg(p, 4, reg); |
| emit_1ub(p, imm); |
| } |
| } |
| |
| |
| /*********************************************************************** |
| * SSE instructions |
| */ |
| |
| void sse_prefetchnta( struct x86_function *p, struct x86_reg ptr) |
| { |
| DUMP_R( ptr ); |
| assert(ptr.mod != mod_REG); |
| emit_2ub(p, 0x0f, 0x18); |
| emit_modrm_noreg(p, 0, ptr); |
| } |
| |
| void sse_prefetch0( struct x86_function *p, struct x86_reg ptr) |
| { |
| DUMP_R( ptr ); |
| assert(ptr.mod != mod_REG); |
| emit_2ub(p, 0x0f, 0x18); |
| emit_modrm_noreg(p, 1, ptr); |
| } |
| |
| void sse_prefetch1( struct x86_function *p, struct x86_reg ptr) |
| { |
| DUMP_R( ptr ); |
| assert(ptr.mod != mod_REG); |
| emit_2ub(p, 0x0f, 0x18); |
| emit_modrm_noreg(p, 2, ptr); |
| } |
| |
| void sse_movntps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src) |
| { |
| DUMP_RR( dst, src ); |
| |
| assert(dst.mod != mod_REG); |
| assert(src.mod == mod_REG); |
| emit_2ub(p, 0x0f, 0x2b); |
| emit_modrm(p, src, dst); |
| } |
| |
| |
| |
| |
| void sse_movss( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub(p, 0xF3, X86_TWOB); |
| emit_op_modrm( p, 0x10, 0x11, dst, src ); |
| } |
| |
| void sse_movaps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_1ub(p, X86_TWOB); |
| emit_op_modrm( p, 0x28, 0x29, dst, src ); |
| } |
| |
| void sse_movups( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_1ub(p, X86_TWOB); |
| emit_op_modrm( p, 0x10, 0x11, dst, src ); |
| } |
| |
| void sse_movhps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| assert(dst.mod != mod_REG || src.mod != mod_REG); |
| emit_1ub(p, X86_TWOB); |
| emit_op_modrm( p, 0x16, 0x17, dst, src ); /* cf movlhps */ |
| } |
| |
| void sse_movlps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| assert(dst.mod != mod_REG || src.mod != mod_REG); |
| emit_1ub(p, X86_TWOB); |
| emit_op_modrm( p, 0x12, 0x13, dst, src ); /* cf movhlps */ |
| } |
| |
| void sse_maxps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub(p, X86_TWOB, 0x5F); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse_maxss( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_3ub(p, 0xF3, X86_TWOB, 0x5F); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse_divss( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_3ub(p, 0xF3, X86_TWOB, 0x5E); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse_minps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub(p, X86_TWOB, 0x5D); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse_subps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub(p, X86_TWOB, 0x5C); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse_mulps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub(p, X86_TWOB, 0x59); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse_mulss( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_3ub(p, 0xF3, X86_TWOB, 0x59); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse_addps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub(p, X86_TWOB, 0x58); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse_addss( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_3ub(p, 0xF3, X86_TWOB, 0x58); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse_andnps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub(p, X86_TWOB, 0x55); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse_andps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub(p, X86_TWOB, 0x54); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse_rsqrtps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub(p, X86_TWOB, 0x52); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse_rsqrtss( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_3ub(p, 0xF3, X86_TWOB, 0x52); |
| emit_modrm( p, dst, src ); |
| |
| } |
| |
| void sse_movhlps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| assert(dst.mod == mod_REG && src.mod == mod_REG); |
| emit_2ub(p, X86_TWOB, 0x12); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse_movlhps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| assert(dst.mod == mod_REG && src.mod == mod_REG); |
| emit_2ub(p, X86_TWOB, 0x16); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse_orps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub(p, X86_TWOB, 0x56); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse_xorps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub(p, X86_TWOB, 0x57); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse_cvtps2pi( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| assert(dst.file == file_MMX && |
| (src.file == file_XMM || src.mod != mod_REG)); |
| |
| p->need_emms = 1; |
| |
| emit_2ub(p, X86_TWOB, 0x2d); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse2_cvtdq2ps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub(p, X86_TWOB, 0x5b); |
| emit_modrm( p, dst, src ); |
| } |
| |
| |
| /* Shufps can also be used to implement a reduced swizzle when dest == |
| * arg0. |
| */ |
| void sse_shufps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src, |
| unsigned char shuf) |
| { |
| DUMP_RRI( dst, src, shuf ); |
| emit_2ub(p, X86_TWOB, 0xC6); |
| emit_modrm(p, dst, src); |
| emit_1ub(p, shuf); |
| } |
| |
| void sse_unpckhps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub( p, X86_TWOB, 0x15 ); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse_unpcklps( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub( p, X86_TWOB, 0x14 ); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse_cmpps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src, |
| enum sse_cc cc) |
| { |
| DUMP_RRI( dst, src, cc ); |
| emit_2ub(p, X86_TWOB, 0xC2); |
| emit_modrm(p, dst, src); |
| emit_1ub(p, cc); |
| } |
| |
| void sse_pmovmskb( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src) |
| { |
| DUMP_RR( dst, src ); |
| emit_3ub(p, 0x66, X86_TWOB, 0xD7); |
| emit_modrm(p, dst, src); |
| } |
| |
| void sse_movmskps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub(p, X86_TWOB, 0x50); |
| emit_modrm(p, dst, src); |
| } |
| |
| /*********************************************************************** |
| * SSE2 instructions |
| */ |
| |
| void sse2_movd( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR(dst, src); |
| emit_2ub(p, 0x66, 0x0f); |
| if(dst.mod == mod_REG && dst.file == file_REG32) |
| { |
| emit_1ub(p, 0x7e); |
| emit_modrm(p, src, dst); |
| } |
| else |
| { |
| emit_op_modrm(p, 0x6e, 0x7e, dst, src); |
| } |
| } |
| |
| void sse2_movq( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR(dst, src); |
| switch (dst.mod) { |
| case mod_REG: |
| emit_3ub(p, 0xf3, 0x0f, 0x7e); |
| emit_modrm(p, dst, src); |
| break; |
| case mod_INDIRECT: |
| case mod_DISP32: |
| case mod_DISP8: |
| assert(src.mod == mod_REG); |
| emit_3ub(p, 0x66, 0x0f, 0xd6); |
| emit_modrm(p, src, dst); |
| break; |
| default: |
| assert(0); |
| break; |
| } |
| } |
| |
| void sse2_movdqu( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR(dst, src); |
| emit_2ub(p, 0xf3, 0x0f); |
| emit_op_modrm(p, 0x6f, 0x7f, dst, src); |
| } |
| |
| void sse2_movdqa( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR(dst, src); |
| emit_2ub(p, 0x66, 0x0f); |
| emit_op_modrm(p, 0x6f, 0x7f, dst, src); |
| } |
| |
| void sse2_movsd( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR(dst, src); |
| emit_2ub(p, 0xf2, 0x0f); |
| emit_op_modrm(p, 0x10, 0x11, dst, src); |
| } |
| |
| void sse2_movupd( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR(dst, src); |
| emit_2ub(p, 0x66, 0x0f); |
| emit_op_modrm(p, 0x10, 0x11, dst, src); |
| } |
| |
| void sse2_movapd( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR(dst, src); |
| emit_2ub(p, 0x66, 0x0f); |
| emit_op_modrm(p, 0x28, 0x29, dst, src); |
| } |
| |
| /** |
| * Perform a reduced swizzle: |
| */ |
| void sse2_pshufd( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src, |
| unsigned char shuf) |
| { |
| DUMP_RRI( dst, src, shuf ); |
| emit_3ub(p, 0x66, X86_TWOB, 0x70); |
| emit_modrm(p, dst, src); |
| emit_1ub(p, shuf); |
| } |
| |
| void sse2_pshuflw( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src, |
| unsigned char shuf) |
| { |
| DUMP_RRI( dst, src, shuf ); |
| emit_3ub(p, 0xf2, X86_TWOB, 0x70); |
| emit_modrm(p, dst, src); |
| emit_1ub(p, shuf); |
| } |
| |
| void sse2_pshufhw( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src, |
| unsigned char shuf) |
| { |
| DUMP_RRI( dst, src, shuf ); |
| emit_3ub(p, 0xf3, X86_TWOB, 0x70); |
| emit_modrm(p, dst, src); |
| emit_1ub(p, shuf); |
| } |
| |
| void sse2_cvttps2dq( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_3ub( p, 0xF3, X86_TWOB, 0x5B ); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse2_cvtps2dq( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_3ub(p, 0x66, X86_TWOB, 0x5B); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse2_cvtsd2ss( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_3ub(p, 0xf2, 0x0f, 0x5a); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse2_cvtpd2ps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_3ub(p, 0x66, 0x0f, 0x5a); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse2_packssdw( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_3ub(p, 0x66, X86_TWOB, 0x6B); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse2_packsswb( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_3ub(p, 0x66, X86_TWOB, 0x63); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse2_packuswb( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_3ub(p, 0x66, X86_TWOB, 0x67); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse2_punpcklbw( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_3ub(p, 0x66, X86_TWOB, 0x60); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse2_punpcklwd( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_3ub(p, 0x66, 0x0f, 0x61); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse2_punpckldq( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_3ub(p, 0x66, 0x0f, 0x62); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse2_punpcklqdq( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_3ub(p, 0x66, 0x0f, 0x6c); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse2_psllw_imm( struct x86_function *p, struct x86_reg dst, unsigned imm ) |
| { |
| DUMP_RI(dst, imm); |
| emit_3ub(p, 0x66, 0x0f, 0x71); |
| emit_modrm_noreg(p, 6, dst); |
| emit_1ub(p, imm); |
| } |
| |
| void sse2_pslld_imm( struct x86_function *p, struct x86_reg dst, unsigned imm ) |
| { |
| DUMP_RI(dst, imm); |
| emit_3ub(p, 0x66, 0x0f, 0x72); |
| emit_modrm_noreg(p, 6, dst); |
| emit_1ub(p, imm); |
| } |
| |
| void sse2_psllq_imm( struct x86_function *p, struct x86_reg dst, unsigned imm ) |
| { |
| DUMP_RI(dst, imm); |
| emit_3ub(p, 0x66, 0x0f, 0x73); |
| emit_modrm_noreg(p, 6, dst); |
| emit_1ub(p, imm); |
| } |
| |
| void sse2_psrlw_imm( struct x86_function *p, struct x86_reg dst, unsigned imm ) |
| { |
| DUMP_RI(dst, imm); |
| emit_3ub(p, 0x66, 0x0f, 0x71); |
| emit_modrm_noreg(p, 2, dst); |
| emit_1ub(p, imm); |
| } |
| |
| void sse2_psrld_imm( struct x86_function *p, struct x86_reg dst, unsigned imm ) |
| { |
| DUMP_RI(dst, imm); |
| emit_3ub(p, 0x66, 0x0f, 0x72); |
| emit_modrm_noreg(p, 2, dst); |
| emit_1ub(p, imm); |
| } |
| |
| void sse2_psrlq_imm( struct x86_function *p, struct x86_reg dst, unsigned imm ) |
| { |
| DUMP_RI(dst, imm); |
| emit_3ub(p, 0x66, 0x0f, 0x73); |
| emit_modrm_noreg(p, 2, dst); |
| emit_1ub(p, imm); |
| } |
| |
| void sse2_psraw_imm( struct x86_function *p, struct x86_reg dst, unsigned imm ) |
| { |
| DUMP_RI(dst, imm); |
| emit_3ub(p, 0x66, 0x0f, 0x71); |
| emit_modrm_noreg(p, 4, dst); |
| emit_1ub(p, imm); |
| } |
| |
| void sse2_psrad_imm( struct x86_function *p, struct x86_reg dst, unsigned imm ) |
| { |
| DUMP_RI(dst, imm); |
| emit_3ub(p, 0x66, 0x0f, 0x72); |
| emit_modrm_noreg(p, 4, dst); |
| emit_1ub(p, imm); |
| } |
| |
| void sse2_por( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR(dst, src); |
| emit_3ub(p, 0x66, 0x0f, 0xeb); |
| emit_modrm(p, dst, src); |
| } |
| |
| void sse2_rcpps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_2ub(p, X86_TWOB, 0x53); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse2_rcpss( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| emit_3ub(p, 0xF3, X86_TWOB, 0x53); |
| emit_modrm( p, dst, src ); |
| } |
| |
| /*********************************************************************** |
| * x87 instructions |
| */ |
| static void note_x87_pop( struct x86_function *p ) |
| { |
| p->x87_stack--; |
| assert(p->x87_stack >= 0); |
| } |
| |
| static void note_x87_push( struct x86_function *p ) |
| { |
| p->x87_stack++; |
| assert(p->x87_stack <= 7); |
| } |
| |
| void x87_assert_stack_empty( struct x86_function *p ) |
| { |
| assert (p->x87_stack == 0); |
| } |
| |
| |
| void x87_fist( struct x86_function *p, struct x86_reg dst ) |
| { |
| DUMP_R( dst ); |
| emit_1ub(p, 0xdb); |
| emit_modrm_noreg(p, 2, dst); |
| } |
| |
| void x87_fistp( struct x86_function *p, struct x86_reg dst ) |
| { |
| DUMP_R( dst ); |
| emit_1ub(p, 0xdb); |
| emit_modrm_noreg(p, 3, dst); |
| note_x87_pop(p); |
| } |
| |
| void x87_fild( struct x86_function *p, struct x86_reg arg ) |
| { |
| DUMP_R( arg ); |
| emit_1ub(p, 0xdf); |
| emit_modrm_noreg(p, 0, arg); |
| note_x87_push(p); |
| } |
| |
| void x87_fldz( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xd9, 0xee); |
| note_x87_push(p); |
| } |
| |
| |
| void x87_fldcw( struct x86_function *p, struct x86_reg arg ) |
| { |
| DUMP_R( arg ); |
| assert(arg.file == file_REG32); |
| assert(arg.mod != mod_REG); |
| emit_1ub(p, 0xd9); |
| emit_modrm_noreg(p, 5, arg); |
| } |
| |
| void x87_fld1( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xd9, 0xe8); |
| note_x87_push(p); |
| } |
| |
| void x87_fldl2e( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xd9, 0xea); |
| note_x87_push(p); |
| } |
| |
| void x87_fldln2( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xd9, 0xed); |
| note_x87_push(p); |
| } |
| |
| void x87_fwait( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_1ub(p, 0x9b); |
| } |
| |
| void x87_fnclex( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xdb, 0xe2); |
| } |
| |
| void x87_fclex( struct x86_function *p ) |
| { |
| x87_fwait(p); |
| x87_fnclex(p); |
| } |
| |
| void x87_fcmovb( struct x86_function *p, struct x86_reg arg ) |
| { |
| DUMP_R( arg ); |
| assert(arg.file == file_x87); |
| emit_2ub(p, 0xda, 0xc0+arg.idx); |
| } |
| |
| void x87_fcmove( struct x86_function *p, struct x86_reg arg ) |
| { |
| DUMP_R( arg ); |
| assert(arg.file == file_x87); |
| emit_2ub(p, 0xda, 0xc8+arg.idx); |
| } |
| |
| void x87_fcmovbe( struct x86_function *p, struct x86_reg arg ) |
| { |
| DUMP_R( arg ); |
| assert(arg.file == file_x87); |
| emit_2ub(p, 0xda, 0xd0+arg.idx); |
| } |
| |
| void x87_fcmovnb( struct x86_function *p, struct x86_reg arg ) |
| { |
| DUMP_R( arg ); |
| assert(arg.file == file_x87); |
| emit_2ub(p, 0xdb, 0xc0+arg.idx); |
| } |
| |
| void x87_fcmovne( struct x86_function *p, struct x86_reg arg ) |
| { |
| DUMP_R( arg ); |
| assert(arg.file == file_x87); |
| emit_2ub(p, 0xdb, 0xc8+arg.idx); |
| } |
| |
| void x87_fcmovnbe( struct x86_function *p, struct x86_reg arg ) |
| { |
| DUMP_R( arg ); |
| assert(arg.file == file_x87); |
| emit_2ub(p, 0xdb, 0xd0+arg.idx); |
| } |
| |
| |
| |
| static void x87_arith_op( struct x86_function *p, struct x86_reg dst, struct x86_reg arg, |
| unsigned char dst0ub0, |
| unsigned char dst0ub1, |
| unsigned char arg0ub0, |
| unsigned char arg0ub1, |
| unsigned char argmem_noreg) |
| { |
| assert(dst.file == file_x87); |
| |
| if (arg.file == file_x87) { |
| if (dst.idx == 0) |
| emit_2ub(p, dst0ub0, dst0ub1+arg.idx); |
| else if (arg.idx == 0) |
| emit_2ub(p, arg0ub0, arg0ub1+arg.idx); |
| else |
| assert(0); |
| } |
| else if (dst.idx == 0) { |
| assert(arg.file == file_REG32); |
| emit_1ub(p, 0xd8); |
| emit_modrm_noreg(p, argmem_noreg, arg); |
| } |
| else |
| assert(0); |
| } |
| |
| void x87_fmul( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| x87_arith_op(p, dst, src, |
| 0xd8, 0xc8, |
| 0xdc, 0xc8, |
| 4); |
| } |
| |
| void x87_fsub( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| x87_arith_op(p, dst, src, |
| 0xd8, 0xe0, |
| 0xdc, 0xe8, |
| 4); |
| } |
| |
| void x87_fsubr( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| x87_arith_op(p, dst, src, |
| 0xd8, 0xe8, |
| 0xdc, 0xe0, |
| 5); |
| } |
| |
| void x87_fadd( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| x87_arith_op(p, dst, src, |
| 0xd8, 0xc0, |
| 0xdc, 0xc0, |
| 0); |
| } |
| |
| void x87_fdiv( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| x87_arith_op(p, dst, src, |
| 0xd8, 0xf0, |
| 0xdc, 0xf8, |
| 6); |
| } |
| |
| void x87_fdivr( struct x86_function *p, struct x86_reg dst, struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| x87_arith_op(p, dst, src, |
| 0xd8, 0xf8, |
| 0xdc, 0xf0, |
| 7); |
| } |
| |
| void x87_fmulp( struct x86_function *p, struct x86_reg dst ) |
| { |
| DUMP_R( dst ); |
| assert(dst.file == file_x87); |
| assert(dst.idx >= 1); |
| emit_2ub(p, 0xde, 0xc8+dst.idx); |
| note_x87_pop(p); |
| } |
| |
| void x87_fsubp( struct x86_function *p, struct x86_reg dst ) |
| { |
| DUMP_R( dst ); |
| assert(dst.file == file_x87); |
| assert(dst.idx >= 1); |
| emit_2ub(p, 0xde, 0xe8+dst.idx); |
| note_x87_pop(p); |
| } |
| |
| void x87_fsubrp( struct x86_function *p, struct x86_reg dst ) |
| { |
| DUMP_R( dst ); |
| assert(dst.file == file_x87); |
| assert(dst.idx >= 1); |
| emit_2ub(p, 0xde, 0xe0+dst.idx); |
| note_x87_pop(p); |
| } |
| |
| void x87_faddp( struct x86_function *p, struct x86_reg dst ) |
| { |
| DUMP_R( dst ); |
| assert(dst.file == file_x87); |
| assert(dst.idx >= 1); |
| emit_2ub(p, 0xde, 0xc0+dst.idx); |
| note_x87_pop(p); |
| } |
| |
| void x87_fdivp( struct x86_function *p, struct x86_reg dst ) |
| { |
| DUMP_R( dst ); |
| assert(dst.file == file_x87); |
| assert(dst.idx >= 1); |
| emit_2ub(p, 0xde, 0xf8+dst.idx); |
| note_x87_pop(p); |
| } |
| |
| void x87_fdivrp( struct x86_function *p, struct x86_reg dst ) |
| { |
| DUMP_R( dst ); |
| assert(dst.file == file_x87); |
| assert(dst.idx >= 1); |
| emit_2ub(p, 0xde, 0xf0+dst.idx); |
| note_x87_pop(p); |
| } |
| |
| void x87_ftst( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xd9, 0xe4); |
| } |
| |
| void x87_fucom( struct x86_function *p, struct x86_reg arg ) |
| { |
| DUMP_R( arg ); |
| assert(arg.file == file_x87); |
| emit_2ub(p, 0xdd, 0xe0+arg.idx); |
| } |
| |
| void x87_fucomp( struct x86_function *p, struct x86_reg arg ) |
| { |
| DUMP_R( arg ); |
| assert(arg.file == file_x87); |
| emit_2ub(p, 0xdd, 0xe8+arg.idx); |
| note_x87_pop(p); |
| } |
| |
| void x87_fucompp( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xda, 0xe9); |
| note_x87_pop(p); /* pop twice */ |
| note_x87_pop(p); /* pop twice */ |
| } |
| |
| void x87_fxch( struct x86_function *p, struct x86_reg arg ) |
| { |
| DUMP_R( arg ); |
| assert(arg.file == file_x87); |
| emit_2ub(p, 0xd9, 0xc8+arg.idx); |
| } |
| |
| void x87_fabs( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xd9, 0xe1); |
| } |
| |
| void x87_fchs( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xd9, 0xe0); |
| } |
| |
| void x87_fcos( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xd9, 0xff); |
| } |
| |
| |
| void x87_fprndint( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xd9, 0xfc); |
| } |
| |
| void x87_fscale( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xd9, 0xfd); |
| } |
| |
| void x87_fsin( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xd9, 0xfe); |
| } |
| |
| void x87_fsincos( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xd9, 0xfb); |
| } |
| |
| void x87_fsqrt( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xd9, 0xfa); |
| } |
| |
| void x87_fxtract( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xd9, 0xf4); |
| } |
| |
| /* st0 = (2^st0)-1 |
| * |
| * Restrictions: -1.0 <= st0 <= 1.0 |
| */ |
| void x87_f2xm1( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xd9, 0xf0); |
| } |
| |
| /* st1 = st1 * log2(st0); |
| * pop_stack; |
| */ |
| void x87_fyl2x( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xd9, 0xf1); |
| note_x87_pop(p); |
| } |
| |
| /* st1 = st1 * log2(st0 + 1.0); |
| * pop_stack; |
| * |
| * A fast operation, with restrictions: -.29 < st0 < .29 |
| */ |
| void x87_fyl2xp1( struct x86_function *p ) |
| { |
| DUMP(); |
| emit_2ub(p, 0xd9, 0xf9); |
| note_x87_pop(p); |
| } |
| |
| |
| void x87_fld( struct x86_function *p, struct x86_reg arg ) |
| { |
| DUMP_R( arg ); |
| if (arg.file == file_x87) |
| emit_2ub(p, 0xd9, 0xc0 + arg.idx); |
| else { |
| emit_1ub(p, 0xd9); |
| emit_modrm_noreg(p, 0, arg); |
| } |
| note_x87_push(p); |
| } |
| |
| void x87_fst( struct x86_function *p, struct x86_reg dst ) |
| { |
| DUMP_R( dst ); |
| if (dst.file == file_x87) |
| emit_2ub(p, 0xdd, 0xd0 + dst.idx); |
| else { |
| emit_1ub(p, 0xd9); |
| emit_modrm_noreg(p, 2, dst); |
| } |
| } |
| |
| void x87_fstp( struct x86_function *p, struct x86_reg dst ) |
| { |
| DUMP_R( dst ); |
| if (dst.file == file_x87) |
| emit_2ub(p, 0xdd, 0xd8 + dst.idx); |
| else { |
| emit_1ub(p, 0xd9); |
| emit_modrm_noreg(p, 3, dst); |
| } |
| note_x87_pop(p); |
| } |
| |
| void x87_fpop( struct x86_function *p ) |
| { |
| x87_fstp( p, x86_make_reg( file_x87, 0 )); |
| } |
| |
| |
| void x87_fcom( struct x86_function *p, struct x86_reg dst ) |
| { |
| DUMP_R( dst ); |
| if (dst.file == file_x87) |
| emit_2ub(p, 0xd8, 0xd0 + dst.idx); |
| else { |
| emit_1ub(p, 0xd8); |
| emit_modrm_noreg(p, 2, dst); |
| } |
| } |
| |
| |
| void x87_fcomp( struct x86_function *p, struct x86_reg dst ) |
| { |
| DUMP_R( dst ); |
| if (dst.file == file_x87) |
| emit_2ub(p, 0xd8, 0xd8 + dst.idx); |
| else { |
| emit_1ub(p, 0xd8); |
| emit_modrm_noreg(p, 3, dst); |
| } |
| note_x87_pop(p); |
| } |
| |
| void x87_fcomi( struct x86_function *p, struct x86_reg arg ) |
| { |
| DUMP_R( arg ); |
| emit_2ub(p, 0xdb, 0xf0+arg.idx); |
| } |
| |
| void x87_fcomip( struct x86_function *p, struct x86_reg arg ) |
| { |
| DUMP_R( arg ); |
| emit_2ub(p, 0xdb, 0xf0+arg.idx); |
| note_x87_pop(p); |
| } |
| |
| |
| void x87_fnstsw( struct x86_function *p, struct x86_reg dst ) |
| { |
| DUMP_R( dst ); |
| assert(dst.file == file_REG32); |
| |
| if (dst.idx == reg_AX && |
| dst.mod == mod_REG) |
| emit_2ub(p, 0xdf, 0xe0); |
| else { |
| emit_1ub(p, 0xdd); |
| emit_modrm_noreg(p, 7, dst); |
| } |
| } |
| |
| |
| void x87_fnstcw( struct x86_function *p, struct x86_reg dst ) |
| { |
| DUMP_R( dst ); |
| assert(dst.file == file_REG32); |
| |
| emit_1ub(p, 0x9b); /* WAIT -- needed? */ |
| emit_1ub(p, 0xd9); |
| emit_modrm_noreg(p, 7, dst); |
| } |
| |
| |
| |
| |
| /*********************************************************************** |
| * MMX instructions |
| */ |
| |
| void mmx_emms( struct x86_function *p ) |
| { |
| DUMP(); |
| assert(p->need_emms); |
| emit_2ub(p, 0x0f, 0x77); |
| p->need_emms = 0; |
| } |
| |
| void mmx_packssdw( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| assert(dst.file == file_MMX && |
| (src.file == file_MMX || src.mod != mod_REG)); |
| |
| p->need_emms = 1; |
| |
| emit_2ub(p, X86_TWOB, 0x6b); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void mmx_packuswb( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| assert(dst.file == file_MMX && |
| (src.file == file_MMX || src.mod != mod_REG)); |
| |
| p->need_emms = 1; |
| |
| emit_2ub(p, X86_TWOB, 0x67); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void mmx_movd( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| p->need_emms = 1; |
| emit_1ub(p, X86_TWOB); |
| emit_op_modrm( p, 0x6e, 0x7e, dst, src ); |
| } |
| |
| void mmx_movq( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| DUMP_RR( dst, src ); |
| p->need_emms = 1; |
| emit_1ub(p, X86_TWOB); |
| emit_op_modrm( p, 0x6f, 0x7f, dst, src ); |
| } |
| |
| |
| /*********************************************************************** |
| * Helper functions |
| */ |
| |
| |
| void x86_cdecl_caller_push_regs( struct x86_function *p ) |
| { |
| x86_push(p, x86_make_reg(file_REG32, reg_AX)); |
| x86_push(p, x86_make_reg(file_REG32, reg_CX)); |
| x86_push(p, x86_make_reg(file_REG32, reg_DX)); |
| } |
| |
| void x86_cdecl_caller_pop_regs( struct x86_function *p ) |
| { |
| x86_pop(p, x86_make_reg(file_REG32, reg_DX)); |
| x86_pop(p, x86_make_reg(file_REG32, reg_CX)); |
| x86_pop(p, x86_make_reg(file_REG32, reg_AX)); |
| } |
| |
| |
| struct x86_reg x86_fn_arg( struct x86_function *p, |
| unsigned arg ) |
| { |
| switch(x86_target(p)) |
| { |
| case X86_64_WIN64_ABI: |
| /* Microsoft uses a different calling convention than the rest of the world */ |
| switch(arg) |
| { |
| case 1: |
| return x86_make_reg(file_REG32, reg_CX); |
| case 2: |
| return x86_make_reg(file_REG32, reg_DX); |
| case 3: |
| return x86_make_reg(file_REG32, reg_R8); |
| case 4: |
| return x86_make_reg(file_REG32, reg_R9); |
| default: |
| /* Win64 allocates stack slots as if it pushed the first 4 arguments too */ |
| return x86_make_disp(x86_make_reg(file_REG32, reg_SP), |
| p->stack_offset + arg * 8); |
| } |
| case X86_64_STD_ABI: |
| switch(arg) |
| { |
| case 1: |
| return x86_make_reg(file_REG32, reg_DI); |
| case 2: |
| return x86_make_reg(file_REG32, reg_SI); |
| case 3: |
| return x86_make_reg(file_REG32, reg_DX); |
| case 4: |
| return x86_make_reg(file_REG32, reg_CX); |
| case 5: |
| return x86_make_reg(file_REG32, reg_R8); |
| case 6: |
| return x86_make_reg(file_REG32, reg_R9); |
| default: |
| return x86_make_disp(x86_make_reg(file_REG32, reg_SP), |
| p->stack_offset + (arg - 6) * 8); /* ??? */ |
| } |
| case X86_32: |
| return x86_make_disp(x86_make_reg(file_REG32, reg_SP), |
| p->stack_offset + arg * 4); /* ??? */ |
| default: |
| assert(0 && "Unexpected x86 target ABI in x86_fn_arg"); |
| return x86_make_reg(file_REG32, reg_CX); /* not used / silence warning */ |
| } |
| } |
| |
| static void x86_init_func_common( struct x86_function *p ) |
| { |
| util_cpu_detect(); |
| p->caps = 0; |
| if(util_cpu_caps.has_mmx) |
| p->caps |= X86_MMX; |
| if(util_cpu_caps.has_mmx2) |
| p->caps |= X86_MMX2; |
| if(util_cpu_caps.has_sse) |
| p->caps |= X86_SSE; |
| if(util_cpu_caps.has_sse2) |
| p->caps |= X86_SSE2; |
| if(util_cpu_caps.has_sse3) |
| p->caps |= X86_SSE3; |
| if(util_cpu_caps.has_sse4_1) |
| p->caps |= X86_SSE4_1; |
| p->csr = p->store; |
| DUMP_START(); |
| } |
| |
| void x86_init_func( struct x86_function *p ) |
| { |
| p->size = 0; |
| p->store = NULL; |
| x86_init_func_common(p); |
| } |
| |
| void x86_init_func_size( struct x86_function *p, unsigned code_size ) |
| { |
| p->size = code_size; |
| p->store = rtasm_exec_malloc(code_size); |
| if (p->store == NULL) { |
| p->store = p->error_overflow; |
| } |
| x86_init_func_common(p); |
| } |
| |
| void x86_release_func( struct x86_function *p ) |
| { |
| if (p->store && p->store != p->error_overflow) |
| rtasm_exec_free(p->store); |
| |
| p->store = NULL; |
| p->csr = NULL; |
| p->size = 0; |
| } |
| |
| |
| static INLINE x86_func |
| voidptr_to_x86_func(void *v) |
| { |
| union { |
| void *v; |
| x86_func f; |
| } u; |
| assert(sizeof(u.v) == sizeof(u.f)); |
| u.v = v; |
| return u.f; |
| } |
| |
| |
| x86_func x86_get_func( struct x86_function *p ) |
| { |
| DUMP_END(); |
| if (DISASSEM && p->store) |
| debug_printf("disassemble %p %p\n", p->store, p->csr); |
| |
| if (p->store == p->error_overflow) |
| return voidptr_to_x86_func(NULL); |
| else |
| return voidptr_to_x86_func(p->store); |
| } |
| |
| #else |
| |
| void x86sse_dummy( void ); |
| |
| void x86sse_dummy( void ) |
| { |
| } |
| |
| #endif |