/**************************************************************************
*
* 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.
*
**************************************************************************/
#if defined(__i386__) || defined(__386__) || defined(i386)
#include "pipe/p_compiler.h"
#include "pipe/p_debug.h"
#include "pipe/p_pointer.h"
#include "rtasm_execmem.h"
#include "rtasm_x86sse.h"
#define DISASSEM 0
#define X86_TWOB 0x0f
#define DUMP_SSE 0
#if DUMP_SSE
static void
_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( "]" );
}
#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% 15s ", foo ); \
} while (0)
#define DUMP_I( I ) do { \
DUMP(); \
debug_printf( "%u", I ); \
} while( 0 )
#define DUMP_R( R0 ) do { \
DUMP(); \
_print_reg( R0 ); \
} while( 0 )
#define DUMP_RR( R0, R1 ) do { \
DUMP(); \
_print_reg( R0 ); \
debug_printf( ", " ); \
_print_reg( R1 ); \
} while( 0 )
#define DUMP_RI( R0, I ) do { \
DUMP(); \
_print_reg( R0 ); \
debug_printf( ", %u", I ); \
} while( 0 )
#define DUMP_RRI( R0, R1, I ) do { \
DUMP(); \
_print_reg( R0 ); \
debug_printf( ", " ); \
_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.
*/
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, (char) 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 );
}
int x86_get_label( struct x86_function *p )
{
return p->csr - p->store;
}
/***********************************************************************
* x86 instructions
*/
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) {
int amt = p->csr - p->store;
assert(amt > -offset);
}
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);
}
/* 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 )
{
DUMP_RI( dst, 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 )
{
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 += 4;
}
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 -= 4;
}
void x86_inc( struct x86_function *p,
struct x86_reg reg )
{
DUMP_R( reg );
assert(reg.mod == mod_REG);
emit_1ub(p, 0x40 + reg.idx);
}
void x86_dec( struct x86_function *p,
struct x86_reg reg )
{
DUMP_R( reg );
assert(reg.mod == mod_REG);
emit_1ub(p, 0x48 + reg.idx);
}
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 );
emit_op_modrm( p, 0x8b, 0x89, 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 );
}
/***********************************************************************
* SSE instructions
*/
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,
unsigned char 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);
}
/***********************************************************************
* SSE2 instructions
*/
/**
* 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_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_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_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 );
}
void sse2_movd( struct x86_function *p,
struct x86_reg dst,
struct x86_reg src )
{
DUMP_RR( dst, 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 )
{
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);
}
void x87_fild( struct x86_function *p, struct x86_reg arg )
{
DUMP_R( arg );
emit_1ub(p, 0xdf);
emit_modrm_noreg(p, 0, arg);
}
void x87_fldz( struct x86_function *p )
{
DUMP();
emit_2ub(p, 0xd9, 0xee);
}
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);
}
void x87_fldl2e( struct x86_function *p )
{
DUMP();
emit_2ub(p, 0xd9, 0xea);
}
void x87_fldln2( struct x86_function *p )
{
DUMP();
emit_2ub(p, 0xd9, 0xed);
}
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);
}
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);
}
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);
}
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);
}
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);
}
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);
}
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);
}
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);
}
void x87_fucompp( struct x86_function *p )
{
DUMP();
emit_2ub(p, 0xda, 0xe9);
}
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);
}
/* 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);
}
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);
}
}
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);
}
}
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);
}
}
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);
}
}
/***********************************************************************
* 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
*/
/* 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;
DUMP_START();
}
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;
}
p->csr = p->store;
DUMP_START();
}
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;
}
void (*x86_get_func( struct x86_function *p ))(void)
{
DUMP_END();
if (DISASSEM && p->store)
debug_printf("disassemble %p %p\n", p->store, p->csr);
if (p->store == p->error_overflow)
return (void (*)(void)) NULL;
else
return (void (*)(void)) p->store;
}
#else
void x86sse_dummy( void )
{
}
#endif