| #ifdef USE_X86_ASM |
| #if defined(__i386__) || defined(__386__) |
| |
| #include "main/imports.h" |
| #include "x86sse.h" |
| |
| #define DISASSEM 0 |
| #define X86_TWOB 0x0f |
| |
| #if 0 |
| static unsigned char *cptr( void (*label)() ) |
| { |
| return (unsigned char *)(unsigned long)label; |
| } |
| #endif |
| |
| |
| static void do_realloc( struct x86_function *p ) |
| { |
| if (p->size == 0) { |
| p->size = 1024; |
| p->store = _mesa_exec_malloc(p->size); |
| p->csr = p->store; |
| } |
| else { |
| unsigned used = p->csr - p->store; |
| unsigned char *tmp = p->store; |
| p->size *= 2; |
| p->store = _mesa_exec_malloc(p->size); |
| memcpy(p->store, tmp, used); |
| p->csr = p->store + used; |
| _mesa_exec_free(tmp); |
| } |
| } |
| |
| /* Emit bytes to the instruction stream: |
| */ |
| static unsigned char *reserve( struct x86_function *p, int bytes ) |
| { |
| if (p->csr + bytes - p->store > 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. |
| */ |
| 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); |
| |
| 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) { |
| emit_1ub(p, 0x24); /* simplistic! */ |
| } |
| |
| switch (regmem.mod) { |
| case mod_REG: |
| case mod_INDIRECT: |
| break; |
| case mod_DISP8: |
| emit_1b(p, regmem.disp); |
| break; |
| case mod_DISP32: |
| emit_1i(p, regmem.disp); |
| break; |
| default: |
| assert(0); |
| break; |
| } |
| } |
| |
| |
| 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.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 ); |
| } |
| |
| unsigned char *x86_get_label( struct x86_function *p ) |
| { |
| return p->csr; |
| } |
| |
| |
| |
| /*********************************************************************** |
| * x86 instructions |
| */ |
| |
| |
| void x86_jcc( struct x86_function *p, |
| enum x86_cc cc, |
| unsigned char *label ) |
| { |
| int offset = label - (x86_get_label(p) + 2); |
| |
| 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: |
| */ |
| unsigned char *x86_jcc_forward( struct x86_function *p, |
| enum x86_cc cc ) |
| { |
| emit_2ub(p, 0x0f, 0x80 + cc); |
| emit_1i(p, 0); |
| return x86_get_label(p); |
| } |
| |
| unsigned char *x86_jmp_forward( struct x86_function *p) |
| { |
| emit_1ub(p, 0xe9); |
| emit_1i(p, 0); |
| return x86_get_label(p); |
| } |
| |
| unsigned char *x86_call_forward( struct x86_function *p) |
| { |
| 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, |
| unsigned char *fixup ) |
| { |
| *(int *)(fixup - 4) = x86_get_label(p) - fixup; |
| } |
| |
| void x86_jmp( struct x86_function *p, unsigned char *label) |
| { |
| emit_1ub(p, 0xe9); |
| emit_1i(p, label - x86_get_label(p) - 4); |
| } |
| |
| #if 0 |
| /* This doesn't work once we start reallocating & copying the |
| * generated code on buffer fills, because the call is relative to the |
| * current pc. |
| */ |
| void x86_call( struct x86_function *p, void (*label)()) |
| { |
| emit_1ub(p, 0xe8); |
| emit_1i(p, cptr(label) - x86_get_label(p) - 4); |
| } |
| #else |
| void x86_call( struct x86_function *p, struct x86_reg reg) |
| { |
| emit_1ub(p, 0xff); |
| emit_modrm_noreg(p, 2, reg); |
| } |
| #endif |
| |
| |
| /* michal: |
| * Temporary. As I need immediate operands, and dont want to mess with the codegen, |
| * I load the immediate into general purpose register and use it. |
| */ |
| void x86_mov_reg_imm( struct x86_function *p, struct x86_reg dst, int imm ) |
| { |
| assert(dst.mod == mod_REG); |
| emit_1ub(p, 0xb8 + dst.idx); |
| emit_1i(p, imm); |
| } |
| |
| void x86_push( struct x86_function *p, |
| struct x86_reg reg ) |
| { |
| assert(reg.mod == mod_REG); |
| emit_1ub(p, 0x50 + reg.idx); |
| p->stack_offset += 4; |
| } |
| |
| void x86_pop( struct x86_function *p, |
| struct x86_reg reg ) |
| { |
| assert(reg.mod == mod_REG); |
| emit_1ub(p, 0x58 + reg.idx); |
| p->stack_offset -= 4; |
| } |
| |
| void x86_inc( struct x86_function *p, |
| struct x86_reg reg ) |
| { |
| assert(reg.mod == mod_REG); |
| emit_1ub(p, 0x40 + reg.idx); |
| } |
| |
| void x86_dec( struct x86_function *p, |
| struct x86_reg reg ) |
| { |
| assert(reg.mod == mod_REG); |
| emit_1ub(p, 0x48 + reg.idx); |
| } |
| |
| void x86_ret( struct x86_function *p ) |
| { |
| emit_1ub(p, 0xc3); |
| } |
| |
| void x86_sahf( struct x86_function *p ) |
| { |
| emit_1ub(p, 0x9e); |
| } |
| |
| void x86_mov( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| emit_op_modrm( p, 0x8b, 0x89, dst, src ); |
| } |
| |
| void x86_xor( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| emit_op_modrm( p, 0x33, 0x31, dst, src ); |
| } |
| |
| void x86_cmp( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| emit_op_modrm( p, 0x3b, 0x39, dst, src ); |
| } |
| |
| void x86_lea( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg 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 ) |
| { |
| emit_1ub(p, 0x85); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void x86_add( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| emit_op_modrm(p, 0x03, 0x01, dst, src ); |
| } |
| |
| void x86_mul( 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, reg_SP), src ); |
| } |
| |
| void x86_sub( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| emit_op_modrm(p, 0x2b, 0x29, dst, src ); |
| } |
| |
| void x86_or( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| emit_op_modrm( p, 0x0b, 0x09, dst, src ); |
| } |
| |
| void x86_and( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| emit_op_modrm( p, 0x23, 0x21, dst, src ); |
| } |
| |
| |
| |
| /*********************************************************************** |
| * SSE instructions |
| */ |
| |
| |
| void sse_movss( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ); |
| } |
| |
| |
| /* Shufps can also be used to implement a reduced swizzle when dest == |
| * arg0. |
| */ |
| void sse_shufps( struct x86_function *p, |
| struct x86_reg dest, |
| struct x86_reg arg0, |
| unsigned char shuf) |
| { |
| emit_2ub(p, X86_TWOB, 0xC6); |
| emit_modrm(p, dest, arg0); |
| emit_1ub(p, shuf); |
| } |
| |
| void sse_cmpps( struct x86_function *p, |
| struct x86_reg dest, |
| struct x86_reg arg0, |
| unsigned char cc) |
| { |
| emit_2ub(p, X86_TWOB, 0xC2); |
| emit_modrm(p, dest, arg0); |
| emit_1ub(p, cc); |
| } |
| |
| void sse_pmovmskb( struct x86_function *p, |
| struct x86_reg dest, |
| struct x86_reg src) |
| { |
| emit_3ub(p, 0x66, X86_TWOB, 0xD7); |
| emit_modrm(p, dest, src); |
| } |
| |
| /*********************************************************************** |
| * SSE2 instructions |
| */ |
| |
| /** |
| * Perform a reduced swizzle: |
| */ |
| void sse2_pshufd( struct x86_function *p, |
| struct x86_reg dest, |
| struct x86_reg arg0, |
| unsigned char shuf) |
| { |
| emit_3ub(p, 0x66, X86_TWOB, 0x70); |
| emit_modrm(p, dest, arg0); |
| emit_1ub(p, shuf); |
| } |
| |
| void sse2_cvttps2dq( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg 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 ) |
| { |
| emit_3ub(p, 0x66, X86_TWOB, 0x5B); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse2_packssdw( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg 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 ) |
| { |
| 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 ) |
| { |
| emit_3ub(p, 0x66, X86_TWOB, 0x67); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse2_rcpps( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg 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 ) |
| { |
| emit_3ub(p, 0xF3, X86_TWOB, 0x53); |
| emit_modrm( p, dst, src ); |
| } |
| |
| void sse2_movd( struct x86_function *p, |
| struct x86_reg dst, |
| struct x86_reg src ) |
| { |
| emit_2ub(p, 0x66, X86_TWOB); |
| emit_op_modrm( p, 0x6e, 0x7e, dst, src ); |
| } |
| |
| |
| |
| |
| /*********************************************************************** |
| * x87 instructions |
| */ |
| void x87_fist( struct x86_function *p, struct x86_reg dst ) |
| { |
| emit_1ub(p, 0xdb); |
| emit_modrm_noreg(p, 2, dst); |
| } |
| |
| void x87_fistp( struct x86_function *p, struct x86_reg dst ) |
| { |
| emit_1ub(p, 0xdb); |
| emit_modrm_noreg(p, 3, dst); |
| } |
| |
| void x87_fild( struct x86_function *p, struct x86_reg arg ) |
| { |
| emit_1ub(p, 0xdf); |
| emit_modrm_noreg(p, 0, arg); |
| } |
| |
| void x87_fldz( struct x86_function *p ) |
| { |
| emit_2ub(p, 0xd9, 0xee); |
| } |
| |
| |
| void x87_fldcw( struct x86_function *p, struct x86_reg 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 ) |
| { |
| emit_2ub(p, 0xd9, 0xe8); |
| } |
| |
| void x87_fldl2e( struct x86_function *p ) |
| { |
| emit_2ub(p, 0xd9, 0xea); |
| } |
| |
| void x87_fldln2( struct x86_function *p ) |
| { |
| emit_2ub(p, 0xd9, 0xed); |
| } |
| |
| void x87_fwait( struct x86_function *p ) |
| { |
| emit_1ub(p, 0x9b); |
| } |
| |
| void x87_fnclex( struct x86_function *p ) |
| { |
| emit_2ub(p, 0xdb, 0xe2); |
| } |
| |
| void x87_fclex( struct x86_function *p ) |
| { |
| x87_fwait(p); |
| x87_fnclex(p); |
| } |
| |
| |
| 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 arg ) |
| { |
| x87_arith_op(p, dst, arg, |
| 0xd8, 0xc8, |
| 0xdc, 0xc8, |
| 4); |
| } |
| |
| void x87_fsub( struct x86_function *p, struct x86_reg dst, struct x86_reg arg ) |
| { |
| x87_arith_op(p, dst, arg, |
| 0xd8, 0xe0, |
| 0xdc, 0xe8, |
| 4); |
| } |
| |
| void x87_fsubr( struct x86_function *p, struct x86_reg dst, struct x86_reg arg ) |
| { |
| x87_arith_op(p, dst, arg, |
| 0xd8, 0xe8, |
| 0xdc, 0xe0, |
| 5); |
| } |
| |
| void x87_fadd( struct x86_function *p, struct x86_reg dst, struct x86_reg arg ) |
| { |
| x87_arith_op(p, dst, arg, |
| 0xd8, 0xc0, |
| 0xdc, 0xc0, |
| 0); |
| } |
| |
| void x87_fdiv( struct x86_function *p, struct x86_reg dst, struct x86_reg arg ) |
| { |
| x87_arith_op(p, dst, arg, |
| 0xd8, 0xf0, |
| 0xdc, 0xf8, |
| 6); |
| } |
| |
| void x87_fdivr( struct x86_function *p, struct x86_reg dst, struct x86_reg arg ) |
| { |
| x87_arith_op(p, dst, arg, |
| 0xd8, 0xf8, |
| 0xdc, 0xf0, |
| 7); |
| } |
| |
| void x87_fmulp( struct x86_function *p, struct x86_reg dst ) |
| { |
| assert(dst.file == file_x87); |
| assert(dst.idx >= 1); |
| emit_2ub(p, 0xde, 0xc8+dst.idx); |
| } |
| |
| void x87_fsubp( struct x86_function *p, struct x86_reg dst ) |
| { |
| assert(dst.file == file_x87); |
| assert(dst.idx >= 1); |
| emit_2ub(p, 0xde, 0xe8+dst.idx); |
| } |
| |
| void x87_fsubrp( struct x86_function *p, struct x86_reg dst ) |
| { |
| assert(dst.file == file_x87); |
| assert(dst.idx >= 1); |
| emit_2ub(p, 0xde, 0xe0+dst.idx); |
| } |
| |
| void x87_faddp( struct x86_function *p, struct x86_reg dst ) |
| { |
| assert(dst.file == file_x87); |
| assert(dst.idx >= 1); |
| emit_2ub(p, 0xde, 0xc0+dst.idx); |
| } |
| |
| void x87_fdivp( struct x86_function *p, struct x86_reg dst ) |
| { |
| assert(dst.file == file_x87); |
| assert(dst.idx >= 1); |
| emit_2ub(p, 0xde, 0xf8+dst.idx); |
| } |
| |
| void x87_fdivrp( struct x86_function *p, struct x86_reg dst ) |
| { |
| assert(dst.file == file_x87); |
| assert(dst.idx >= 1); |
| emit_2ub(p, 0xde, 0xf0+dst.idx); |
| } |
| |
| void x87_fucom( struct x86_function *p, struct x86_reg arg ) |
| { |
| assert(arg.file == file_x87); |
| emit_2ub(p, 0xdd, 0xe0+arg.idx); |
| } |
| |
| void x87_fucomp( struct x86_function *p, struct x86_reg arg ) |
| { |
| assert(arg.file == file_x87); |
| emit_2ub(p, 0xdd, 0xe8+arg.idx); |
| } |
| |
| void x87_fucompp( struct x86_function *p ) |
| { |
| emit_2ub(p, 0xda, 0xe9); |
| } |
| |
| void x87_fxch( struct x86_function *p, struct x86_reg arg ) |
| { |
| assert(arg.file == file_x87); |
| emit_2ub(p, 0xd9, 0xc8+arg.idx); |
| } |
| |
| void x87_fabs( struct x86_function *p ) |
| { |
| emit_2ub(p, 0xd9, 0xe1); |
| } |
| |
| void x87_fchs( struct x86_function *p ) |
| { |
| emit_2ub(p, 0xd9, 0xe0); |
| } |
| |
| void x87_fcos( struct x86_function *p ) |
| { |
| emit_2ub(p, 0xd9, 0xff); |
| } |
| |
| |
| void x87_fprndint( struct x86_function *p ) |
| { |
| emit_2ub(p, 0xd9, 0xfc); |
| } |
| |
| void x87_fscale( struct x86_function *p ) |
| { |
| emit_2ub(p, 0xd9, 0xfd); |
| } |
| |
| void x87_fsin( struct x86_function *p ) |
| { |
| emit_2ub(p, 0xd9, 0xfe); |
| } |
| |
| void x87_fsincos( struct x86_function *p ) |
| { |
| emit_2ub(p, 0xd9, 0xfb); |
| } |
| |
| void x87_fsqrt( struct x86_function *p ) |
| { |
| emit_2ub(p, 0xd9, 0xfa); |
| } |
| |
| void x87_fxtract( struct x86_function *p ) |
| { |
| emit_2ub(p, 0xd9, 0xf4); |
| } |
| |
| /* st0 = (2^st0)-1 |
| * |
| * Restrictions: -1.0 <= st0 <= 1.0 |
| */ |
| void x87_f2xm1( struct x86_function *p ) |
| { |
| emit_2ub(p, 0xd9, 0xf0); |
| } |
| |
| /* st1 = st1 * log2(st0); |
| * pop_stack; |
| */ |
| void x87_fyl2x( struct x86_function *p ) |
| { |
| emit_2ub(p, 0xd9, 0xf1); |
| } |
| |
| /* st1 = st1 * log2(st0 + 1.0); |
| * pop_stack; |
| * |
| * A fast operation, with restrictions: -.29 < st0 < .29 |
| */ |
| void x87_fyl2xp1( struct x86_function *p ) |
| { |
| emit_2ub(p, 0xd9, 0xf9); |
| } |
| |
| |
| void x87_fld( struct x86_function *p, struct x86_reg arg ) |
| { |
| if (arg.file == file_x87) |
| emit_2ub(p, 0xd9, 0xc0 + arg.idx); |
| else { |
| emit_1ub(p, 0xd9); |
| emit_modrm_noreg(p, 0, arg); |
| } |
| } |
| |
| void x87_fst( struct x86_function *p, struct x86_reg 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 ) |
| { |
| if (dst.file == file_x87) |
| emit_2ub(p, 0xdd, 0xd8 + dst.idx); |
| else { |
| emit_1ub(p, 0xd9); |
| emit_modrm_noreg(p, 3, dst); |
| } |
| } |
| |
| void x87_fcom( struct x86_function *p, struct x86_reg 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 ) |
| { |
| if (dst.file == file_x87) |
| emit_2ub(p, 0xd8, 0xd8 + dst.idx); |
| else { |
| emit_1ub(p, 0xd8); |
| emit_modrm_noreg(p, 3, dst); |
| } |
| } |
| |
| |
| void x87_fnstsw( struct x86_function *p, struct x86_reg 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); |
| } |
| } |
| |
| |
| |
| |
| /*********************************************************************** |
| * MMX instructions |
| */ |
| |
| void mmx_emms( struct x86_function *p ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| 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 ) |
| { |
| p->need_emms = 1; |
| emit_1ub(p, X86_TWOB); |
| emit_op_modrm( p, 0x6f, 0x7f, dst, src ); |
| } |
| |
| |
| /*********************************************************************** |
| * Helper functions |
| */ |
| |
| |
| /* Retreive a reference to one of the function arguments, taking into |
| * account any push/pop activity: |
| */ |
| struct x86_reg x86_fn_arg( struct x86_function *p, |
| unsigned arg ) |
| { |
| return x86_make_disp(x86_make_reg(file_REG32, reg_SP), |
| p->stack_offset + arg * 4); /* ??? */ |
| } |
| |
| |
| void x86_init_func( struct x86_function *p ) |
| { |
| p->size = 0; |
| p->store = NULL; |
| p->csr = p->store; |
| } |
| |
| int x86_init_func_size( struct x86_function *p, unsigned code_size ) |
| { |
| p->size = code_size; |
| p->store = _mesa_exec_malloc(code_size); |
| p->csr = p->store; |
| return p->store != NULL; |
| } |
| |
| void x86_release_func( struct x86_function *p ) |
| { |
| _mesa_exec_free(p->store); |
| p->store = NULL; |
| p->csr = NULL; |
| p->size = 0; |
| } |
| |
| |
| void (*x86_get_func( struct x86_function *p ))(void) |
| { |
| if (DISASSEM && p->store) |
| printf("disassemble %p %p\n", p->store, p->csr); |
| return (void (*)(void)) (unsigned long) p->store; |
| } |
| |
| #else |
| |
| void x86sse_dummy( void ) |
| { |
| } |
| |
| #endif |
| |
| #else /* USE_X86_ASM */ |
| |
| int x86sse_c_dummy_var; /* silence warning */ |
| |
| #endif /* USE_X86_ASM */ |