0,0 → 1,1203 |
#ifdef USE_X86_ASM |
#if defined(__i386__) || defined(__386__) |
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#include "main/imports.h" |
#include "x86sse.h" |
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#define DISASSEM 0 |
#define X86_TWOB 0x0f |
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#if 0 |
static unsigned char *cptr( void (*label)() ) |
{ |
return (unsigned char *)(unsigned long)label; |
} |
#endif |
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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); |
} |
} |
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/* 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); |
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{ |
unsigned char *csr = p->csr; |
p->csr += bytes; |
return csr; |
} |
} |
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static void emit_1b( struct x86_function *p, char b0 ) |
{ |
char *csr = (char *)reserve(p, 1); |
*csr = b0; |
} |
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static void emit_1i( struct x86_function *p, int i0 ) |
{ |
int *icsr = (int *)reserve(p, sizeof(i0)); |
*icsr = i0; |
} |
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static void emit_1ub( struct x86_function *p, unsigned char b0 ) |
{ |
unsigned char *csr = reserve(p, 1); |
*csr++ = b0; |
} |
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static void emit_2ub( struct x86_function *p, unsigned char b0, unsigned char b1 ) |
{ |
unsigned char *csr = reserve(p, 2); |
*csr++ = b0; |
*csr++ = b1; |
} |
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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; |
} |
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/* 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; |
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assert(reg.mod == mod_REG); |
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val |= regmem.mod << 6; /* mod field */ |
val |= reg.idx << 3; /* reg field */ |
val |= regmem.idx; /* r/m field */ |
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emit_1ub(p, val); |
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/* Oh-oh we've stumbled into the SIB thing. |
*/ |
if (regmem.file == file_REG32 && |
regmem.idx == reg_SP) { |
emit_1ub(p, 0x24); /* simplistic! */ |
} |
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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; |
} |
} |
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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); |
} |
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/* 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; |
} |
} |
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/* 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; |
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reg.file = file; |
reg.idx = idx; |
reg.mod = mod_REG; |
reg.disp = 0; |
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return reg; |
} |
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struct x86_reg x86_make_disp( struct x86_reg reg, |
int disp ) |
{ |
assert(reg.file == file_REG32); |
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if (reg.mod == mod_REG) |
reg.disp = disp; |
else |
reg.disp += disp; |
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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; |
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return reg; |
} |
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struct x86_reg x86_deref( struct x86_reg reg ) |
{ |
return x86_make_disp(reg, 0); |
} |
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struct x86_reg x86_get_base_reg( struct x86_reg reg ) |
{ |
return x86_make_reg( reg.file, reg.idx ); |
} |
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unsigned char *x86_get_label( struct x86_function *p ) |
{ |
return p->csr; |
} |
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/*********************************************************************** |
* x86 instructions |
*/ |
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void x86_jcc( struct x86_function *p, |
enum x86_cc cc, |
unsigned char *label ) |
{ |
int offset = label - (x86_get_label(p) + 2); |
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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); |
} |
} |
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/* 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); |
} |
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unsigned char *x86_jmp_forward( struct x86_function *p) |
{ |
emit_1ub(p, 0xe9); |
emit_1i(p, 0); |
return x86_get_label(p); |
} |
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unsigned char *x86_call_forward( struct x86_function *p) |
{ |
emit_1ub(p, 0xe8); |
emit_1i(p, 0); |
return x86_get_label(p); |
} |
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/* 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; |
} |
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void x86_jmp( struct x86_function *p, unsigned char *label) |
{ |
emit_1ub(p, 0xe9); |
emit_1i(p, label - x86_get_label(p) - 4); |
} |
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#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 |
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/* 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); |
} |
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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; |
} |
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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; |
} |
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void x86_inc( struct x86_function *p, |
struct x86_reg reg ) |
{ |
assert(reg.mod == mod_REG); |
emit_1ub(p, 0x40 + reg.idx); |
} |
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void x86_dec( struct x86_function *p, |
struct x86_reg reg ) |
{ |
assert(reg.mod == mod_REG); |
emit_1ub(p, 0x48 + reg.idx); |
} |
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void x86_ret( struct x86_function *p ) |
{ |
emit_1ub(p, 0xc3); |
} |
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void x86_sahf( struct x86_function *p ) |
{ |
emit_1ub(p, 0x9e); |
} |
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void x86_mov( struct x86_function *p, |
struct x86_reg dst, |
struct x86_reg src ) |
{ |
emit_op_modrm( p, 0x8b, 0x89, dst, src ); |
} |
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void x86_xor( struct x86_function *p, |
struct x86_reg dst, |
struct x86_reg src ) |
{ |
emit_op_modrm( p, 0x33, 0x31, dst, src ); |
} |
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void x86_cmp( struct x86_function *p, |
struct x86_reg dst, |
struct x86_reg src ) |
{ |
emit_op_modrm( p, 0x3b, 0x39, dst, src ); |
} |
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void x86_lea( struct x86_function *p, |
struct x86_reg dst, |
struct x86_reg src ) |
{ |
emit_1ub(p, 0x8d); |
emit_modrm( p, dst, src ); |
} |
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void x86_test( struct x86_function *p, |
struct x86_reg dst, |
struct x86_reg src ) |
{ |
emit_1ub(p, 0x85); |
emit_modrm( p, dst, src ); |
} |
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void x86_add( struct x86_function *p, |
struct x86_reg dst, |
struct x86_reg src ) |
{ |
emit_op_modrm(p, 0x03, 0x01, dst, src ); |
} |
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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 ); |
} |
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void x86_sub( struct x86_function *p, |
struct x86_reg dst, |
struct x86_reg src ) |
{ |
emit_op_modrm(p, 0x2b, 0x29, dst, src ); |
} |
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void x86_or( struct x86_function *p, |
struct x86_reg dst, |
struct x86_reg src ) |
{ |
emit_op_modrm( p, 0x0b, 0x09, dst, src ); |
} |
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void x86_and( struct x86_function *p, |
struct x86_reg dst, |
struct x86_reg src ) |
{ |
emit_op_modrm( p, 0x23, 0x21, dst, src ); |
} |
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/*********************************************************************** |
* SSE instructions |
*/ |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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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 */ |
} |
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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 */ |
} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
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} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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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)); |
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p->need_emms = 1; |
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emit_2ub(p, X86_TWOB, 0x2d); |
emit_modrm( p, dst, src ); |
} |
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/* 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); |
} |
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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); |
} |
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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); |
} |
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/*********************************************************************** |
* SSE2 instructions |
*/ |
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/** |
* 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); |
} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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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 ); |
} |
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/*********************************************************************** |
* x87 instructions |
*/ |
void x87_fist( struct x86_function *p, struct x86_reg dst ) |
{ |
emit_1ub(p, 0xdb); |
emit_modrm_noreg(p, 2, dst); |
} |
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void x87_fistp( struct x86_function *p, struct x86_reg dst ) |
{ |
emit_1ub(p, 0xdb); |
emit_modrm_noreg(p, 3, dst); |
} |
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void x87_fild( struct x86_function *p, struct x86_reg arg ) |
{ |
emit_1ub(p, 0xdf); |
emit_modrm_noreg(p, 0, arg); |
} |
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void x87_fldz( struct x86_function *p ) |
{ |
emit_2ub(p, 0xd9, 0xee); |
} |
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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); |
} |
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void x87_fld1( struct x86_function *p ) |
{ |
emit_2ub(p, 0xd9, 0xe8); |
} |
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void x87_fldl2e( struct x86_function *p ) |
{ |
emit_2ub(p, 0xd9, 0xea); |
} |
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void x87_fldln2( struct x86_function *p ) |
{ |
emit_2ub(p, 0xd9, 0xed); |
} |
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void x87_fwait( struct x86_function *p ) |
{ |
emit_1ub(p, 0x9b); |
} |
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void x87_fnclex( struct x86_function *p ) |
{ |
emit_2ub(p, 0xdb, 0xe2); |
} |
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void x87_fclex( struct x86_function *p ) |
{ |
x87_fwait(p); |
x87_fnclex(p); |
} |
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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 */ |