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86Box/src/codegen_new/codegen_ops_branch.c
Jasmine Iwanek 9e77acf655 clang format in codegen & codegen_new
2022-11-19 11:53:09 -05:00

990 lines
36 KiB
C
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#include <stdint.h>
#include <86box/86box.h>
#include "cpu.h"
#include <86box/mem.h>
#include "x86.h"
#include "386_common.h"
#include "x86_flags.h"
#include "codegen.h"
#include "codegen_backend.h"
#include "codegen_ir.h"
#include "codegen_ops.h"
#include "codegen_ops_helpers.h"
#include "codegen_ops_mov.h"
static int
NF_SET_01(void)
{
return NF_SET() ? 1 : 0;
}
static int
VF_SET_01(void)
{
return VF_SET() ? 1 : 0;
}
static int
ropJO_common(codeblock_t *block, ir_data_t *ir, uint32_t dest_addr, uint32_t next_pc)
{
int jump_uop;
switch (codegen_flags_changed ? cpu_state.flags_op : FLAGS_UNKNOWN) {
case FLAGS_ZN8:
case FLAGS_ZN16:
case FLAGS_ZN32:
/*Overflow is always zero*/
return 0;
case FLAGS_SUB8:
case FLAGS_DEC8:
jump_uop = uop_CMP_JNO_DEST(ir, IREG_flags_op1_B, IREG_flags_op2_B);
break;
case FLAGS_SUB16:
case FLAGS_DEC16:
jump_uop = uop_CMP_JNO_DEST(ir, IREG_flags_op1_W, IREG_flags_op2_W);
break;
case FLAGS_SUB32:
case FLAGS_DEC32:
jump_uop = uop_CMP_JNO_DEST(ir, IREG_flags_op1, IREG_flags_op2);
break;
case FLAGS_UNKNOWN:
default:
uop_CALL_FUNC_RESULT(ir, IREG_temp0, VF_SET);
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_temp0, 0);
break;
}
uop_MOV_IMM(ir, IREG_pc, dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
return 0;
}
static int
ropJNO_common(codeblock_t *block, ir_data_t *ir, uint32_t dest_addr, uint32_t next_pc)
{
int jump_uop;
switch (codegen_flags_changed ? cpu_state.flags_op : FLAGS_UNKNOWN) {
case FLAGS_ZN8:
case FLAGS_ZN16:
case FLAGS_ZN32:
/*Overflow is always zero*/
uop_MOV_IMM(ir, IREG_pc, dest_addr);
uop_JMP(ir, codegen_exit_rout);
return 0;
case FLAGS_SUB8:
case FLAGS_DEC8:
jump_uop = uop_CMP_JO_DEST(ir, IREG_flags_op1_B, IREG_flags_op2_B);
break;
case FLAGS_SUB16:
case FLAGS_DEC16:
jump_uop = uop_CMP_JO_DEST(ir, IREG_flags_op1_W, IREG_flags_op2_W);
break;
case FLAGS_SUB32:
case FLAGS_DEC32:
jump_uop = uop_CMP_JO_DEST(ir, IREG_flags_op1, IREG_flags_op2);
break;
case FLAGS_UNKNOWN:
default:
uop_CALL_FUNC_RESULT(ir, IREG_temp0, VF_SET);
jump_uop = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
break;
}
uop_MOV_IMM(ir, IREG_pc, dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
return 0;
}
static int
ropJB_common(codeblock_t *block, ir_data_t *ir, uint32_t dest_addr, uint32_t next_pc)
{
int jump_uop;
int do_unroll = (CF_SET() && codegen_can_unroll(block, ir, next_pc, dest_addr));
switch (codegen_flags_changed ? cpu_state.flags_op : FLAGS_UNKNOWN) {
case FLAGS_ZN8:
case FLAGS_ZN16:
case FLAGS_ZN32:
/*Carry is always zero*/
return 0;
case FLAGS_SUB8:
if (do_unroll)
jump_uop = uop_CMP_JB_DEST(ir, IREG_flags_op1_B, IREG_flags_op2_B);
else
jump_uop = uop_CMP_JNB_DEST(ir, IREG_flags_op1_B, IREG_flags_op2_B);
break;
case FLAGS_SUB16:
if (do_unroll)
jump_uop = uop_CMP_JB_DEST(ir, IREG_flags_op1_W, IREG_flags_op2_W);
else
jump_uop = uop_CMP_JNB_DEST(ir, IREG_flags_op1_W, IREG_flags_op2_W);
break;
case FLAGS_SUB32:
if (do_unroll)
jump_uop = uop_CMP_JB_DEST(ir, IREG_flags_op1, IREG_flags_op2);
else
jump_uop = uop_CMP_JNB_DEST(ir, IREG_flags_op1, IREG_flags_op2);
break;
case FLAGS_UNKNOWN:
default:
uop_CALL_FUNC_RESULT(ir, IREG_temp0, CF_SET);
if (do_unroll)
jump_uop = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
else
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_temp0, 0);
break;
}
uop_MOV_IMM(ir, IREG_pc, do_unroll ? next_pc : dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
return do_unroll ? 1 : 0;
}
static int
ropJNB_common(codeblock_t *block, ir_data_t *ir, uint32_t dest_addr, uint32_t next_pc)
{
int jump_uop;
int do_unroll = (!CF_SET() && codegen_can_unroll(block, ir, next_pc, dest_addr));
switch (codegen_flags_changed ? cpu_state.flags_op : FLAGS_UNKNOWN) {
case FLAGS_ZN8:
case FLAGS_ZN16:
case FLAGS_ZN32:
/*Carry is always zero*/
uop_MOV_IMM(ir, IREG_pc, dest_addr);
uop_JMP(ir, codegen_exit_rout);
return 0;
case FLAGS_SUB8:
if (do_unroll)
jump_uop = uop_CMP_JNB_DEST(ir, IREG_flags_op1_B, IREG_flags_op2_B);
else
jump_uop = uop_CMP_JB_DEST(ir, IREG_flags_op1_B, IREG_flags_op2_B);
break;
case FLAGS_SUB16:
if (do_unroll)
jump_uop = uop_CMP_JNB_DEST(ir, IREG_flags_op1_W, IREG_flags_op2_W);
else
jump_uop = uop_CMP_JB_DEST(ir, IREG_flags_op1_W, IREG_flags_op2_W);
break;
case FLAGS_SUB32:
if (do_unroll)
jump_uop = uop_CMP_JNB_DEST(ir, IREG_flags_op1, IREG_flags_op2);
else
jump_uop = uop_CMP_JB_DEST(ir, IREG_flags_op1, IREG_flags_op2);
break;
case FLAGS_UNKNOWN:
default:
uop_CALL_FUNC_RESULT(ir, IREG_temp0, CF_SET);
if (do_unroll)
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_temp0, 0);
else
jump_uop = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
break;
}
uop_MOV_IMM(ir, IREG_pc, do_unroll ? next_pc : dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
return do_unroll ? 1 : 0;
}
static int
ropJE_common(codeblock_t *block, ir_data_t *ir, uint32_t dest_addr, uint32_t next_pc)
{
int jump_uop;
if (ZF_SET() && codegen_can_unroll(block, ir, next_pc, dest_addr)) {
if (!codegen_flags_changed || !flags_res_valid()) {
uop_CALL_FUNC_RESULT(ir, IREG_temp0, ZF_SET);
jump_uop = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
} else {
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_flags_res, 0);
}
uop_MOV_IMM(ir, IREG_pc, next_pc);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
return 1;
} else {
if (!codegen_flags_changed || !flags_res_valid()) {
uop_CALL_FUNC_RESULT(ir, IREG_temp0, ZF_SET);
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_temp0, 0);
} else {
jump_uop = uop_CMP_IMM_JNZ_DEST(ir, IREG_flags_res, 0);
}
uop_MOV_IMM(ir, IREG_pc, dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
}
return 0;
}
int
ropJNE_common(codeblock_t *block, ir_data_t *ir, uint32_t dest_addr, uint32_t next_pc)
{
int jump_uop;
if (!ZF_SET() && codegen_can_unroll(block, ir, next_pc, dest_addr)) {
if (!codegen_flags_changed || !flags_res_valid()) {
uop_CALL_FUNC_RESULT(ir, IREG_temp0, ZF_SET);
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_temp0, 0);
} else {
jump_uop = uop_CMP_IMM_JNZ_DEST(ir, IREG_flags_res, 0);
}
uop_MOV_IMM(ir, IREG_pc, next_pc);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
return 1;
} else {
if (!codegen_flags_changed || !flags_res_valid()) {
uop_CALL_FUNC_RESULT(ir, IREG_temp0, ZF_SET);
jump_uop = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
} else {
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_flags_res, 0);
}
uop_MOV_IMM(ir, IREG_pc, dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
}
return 0;
}
static int
ropJBE_common(codeblock_t *block, ir_data_t *ir, uint32_t dest_addr, uint32_t next_pc)
{
int jump_uop, jump_uop2 = -1;
int do_unroll = ((CF_SET() || ZF_SET()) && codegen_can_unroll(block, ir, next_pc, dest_addr));
switch (codegen_flags_changed ? cpu_state.flags_op : FLAGS_UNKNOWN) {
case FLAGS_ZN8:
case FLAGS_ZN16:
case FLAGS_ZN32:
/*Carry is always zero, so test zero only*/
if (do_unroll)
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_flags_res, 0);
else
jump_uop = uop_CMP_IMM_JNZ_DEST(ir, IREG_flags_res, 0);
break;
case FLAGS_SUB8:
if (do_unroll)
jump_uop = uop_CMP_JBE_DEST(ir, IREG_flags_op1_B, IREG_flags_op2_B);
else
jump_uop = uop_CMP_JNBE_DEST(ir, IREG_flags_op1_B, IREG_flags_op2_B);
break;
case FLAGS_SUB16:
if (do_unroll)
jump_uop = uop_CMP_JBE_DEST(ir, IREG_flags_op1_W, IREG_flags_op2_W);
else
jump_uop = uop_CMP_JNBE_DEST(ir, IREG_flags_op1_W, IREG_flags_op2_W);
break;
case FLAGS_SUB32:
if (do_unroll)
jump_uop = uop_CMP_JBE_DEST(ir, IREG_flags_op1, IREG_flags_op2);
else
jump_uop = uop_CMP_JNBE_DEST(ir, IREG_flags_op1, IREG_flags_op2);
break;
case FLAGS_UNKNOWN:
default:
if (do_unroll) {
uop_CALL_FUNC_RESULT(ir, IREG_temp0, CF_SET);
jump_uop2 = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
uop_CALL_FUNC_RESULT(ir, IREG_temp0, ZF_SET);
jump_uop = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
} else {
uop_CALL_FUNC_RESULT(ir, IREG_temp0, CF_SET);
jump_uop2 = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
uop_CALL_FUNC_RESULT(ir, IREG_temp0, ZF_SET);
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_temp0, 0);
}
break;
}
if (do_unroll) {
uop_MOV_IMM(ir, IREG_pc, next_pc);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
if (jump_uop2 != -1)
uop_set_jump_dest(ir, jump_uop2);
return 1;
} else {
if (jump_uop2 != -1)
uop_set_jump_dest(ir, jump_uop2);
uop_MOV_IMM(ir, IREG_pc, dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
return 0;
}
}
static int
ropJNBE_common(codeblock_t *block, ir_data_t *ir, uint32_t dest_addr, uint32_t next_pc)
{
int jump_uop, jump_uop2 = -1;
int do_unroll = ((!CF_SET() && !ZF_SET()) && codegen_can_unroll(block, ir, next_pc, dest_addr));
switch (codegen_flags_changed ? cpu_state.flags_op : FLAGS_UNKNOWN) {
case FLAGS_ZN8:
case FLAGS_ZN16:
case FLAGS_ZN32:
/*Carry is always zero, so test zero only*/
if (do_unroll)
jump_uop = uop_CMP_IMM_JNZ_DEST(ir, IREG_flags_res, 0);
else
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_flags_res, 0);
break;
case FLAGS_SUB8:
if (do_unroll)
jump_uop = uop_CMP_JNBE_DEST(ir, IREG_flags_op1_B, IREG_flags_op2_B);
else
jump_uop = uop_CMP_JBE_DEST(ir, IREG_flags_op1_B, IREG_flags_op2_B);
break;
case FLAGS_SUB16:
if (do_unroll)
jump_uop = uop_CMP_JNBE_DEST(ir, IREG_flags_op1_W, IREG_flags_op2_W);
else
jump_uop = uop_CMP_JBE_DEST(ir, IREG_flags_op1_W, IREG_flags_op2_W);
break;
case FLAGS_SUB32:
if (do_unroll)
jump_uop = uop_CMP_JNBE_DEST(ir, IREG_flags_op1, IREG_flags_op2);
else
jump_uop = uop_CMP_JBE_DEST(ir, IREG_flags_op1, IREG_flags_op2);
break;
case FLAGS_UNKNOWN:
default:
if (do_unroll) {
uop_CALL_FUNC_RESULT(ir, IREG_temp0, CF_SET);
jump_uop2 = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
uop_CALL_FUNC_RESULT(ir, IREG_temp0, ZF_SET);
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_temp0, 0);
} else {
uop_CALL_FUNC_RESULT(ir, IREG_temp0, CF_SET);
jump_uop = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
uop_CALL_FUNC_RESULT(ir, IREG_temp0, ZF_SET);
jump_uop2 = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
}
break;
}
if (do_unroll) {
if (jump_uop2 != -1)
uop_set_jump_dest(ir, jump_uop2);
uop_MOV_IMM(ir, IREG_pc, next_pc);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
return 1;
} else {
uop_MOV_IMM(ir, IREG_pc, dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
if (jump_uop2 != -1)
uop_set_jump_dest(ir, jump_uop2);
return 0;
}
}
static int
ropJS_common(codeblock_t *block, ir_data_t *ir, uint32_t dest_addr, uint32_t next_pc)
{
int jump_uop;
int do_unroll = (NF_SET() && codegen_can_unroll(block, ir, next_pc, dest_addr));
switch (codegen_flags_changed ? cpu_state.flags_op : FLAGS_UNKNOWN) {
case FLAGS_ZN8:
case FLAGS_ADD8:
case FLAGS_SUB8:
case FLAGS_SHL8:
case FLAGS_SHR8:
case FLAGS_SAR8:
case FLAGS_INC8:
case FLAGS_DEC8:
if (do_unroll)
jump_uop = uop_TEST_JS_DEST(ir, IREG_flags_res_B);
else
jump_uop = uop_TEST_JNS_DEST(ir, IREG_flags_res_B);
break;
case FLAGS_ZN16:
case FLAGS_ADD16:
case FLAGS_SUB16:
case FLAGS_SHL16:
case FLAGS_SHR16:
case FLAGS_SAR16:
case FLAGS_INC16:
case FLAGS_DEC16:
if (do_unroll)
jump_uop = uop_TEST_JS_DEST(ir, IREG_flags_res_W);
else
jump_uop = uop_TEST_JNS_DEST(ir, IREG_flags_res_W);
break;
case FLAGS_ZN32:
case FLAGS_ADD32:
case FLAGS_SUB32:
case FLAGS_SHL32:
case FLAGS_SHR32:
case FLAGS_SAR32:
case FLAGS_INC32:
case FLAGS_DEC32:
if (do_unroll)
jump_uop = uop_TEST_JS_DEST(ir, IREG_flags_res);
else
jump_uop = uop_TEST_JNS_DEST(ir, IREG_flags_res);
break;
case FLAGS_UNKNOWN:
default:
uop_CALL_FUNC_RESULT(ir, IREG_temp0, NF_SET);
if (do_unroll)
jump_uop = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
else
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_temp0, 0);
break;
}
uop_MOV_IMM(ir, IREG_pc, do_unroll ? next_pc : dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
return do_unroll ? 1 : 0;
}
static int
ropJNS_common(codeblock_t *block, ir_data_t *ir, uint32_t dest_addr, uint32_t next_pc)
{
int jump_uop;
int do_unroll = (!NF_SET() && codegen_can_unroll(block, ir, next_pc, dest_addr));
switch (codegen_flags_changed ? cpu_state.flags_op : FLAGS_UNKNOWN) {
case FLAGS_ZN8:
case FLAGS_ADD8:
case FLAGS_SUB8:
case FLAGS_SHL8:
case FLAGS_SHR8:
case FLAGS_SAR8:
case FLAGS_INC8:
case FLAGS_DEC8:
if (do_unroll)
jump_uop = uop_TEST_JNS_DEST(ir, IREG_flags_res_B);
else
jump_uop = uop_TEST_JS_DEST(ir, IREG_flags_res_B);
break;
case FLAGS_ZN16:
case FLAGS_ADD16:
case FLAGS_SUB16:
case FLAGS_SHL16:
case FLAGS_SHR16:
case FLAGS_SAR16:
case FLAGS_INC16:
case FLAGS_DEC16:
if (do_unroll)
jump_uop = uop_TEST_JNS_DEST(ir, IREG_flags_res_W);
else
jump_uop = uop_TEST_JS_DEST(ir, IREG_flags_res_W);
break;
case FLAGS_ZN32:
case FLAGS_ADD32:
case FLAGS_SUB32:
case FLAGS_SHL32:
case FLAGS_SHR32:
case FLAGS_SAR32:
case FLAGS_INC32:
case FLAGS_DEC32:
if (do_unroll)
jump_uop = uop_TEST_JNS_DEST(ir, IREG_flags_res);
else
jump_uop = uop_TEST_JS_DEST(ir, IREG_flags_res);
break;
case FLAGS_UNKNOWN:
default:
uop_CALL_FUNC_RESULT(ir, IREG_temp0, NF_SET);
if (do_unroll)
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_temp0, 0);
else
jump_uop = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
break;
}
uop_MOV_IMM(ir, IREG_pc, do_unroll ? next_pc : dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
return do_unroll ? 1 : 0;
}
static int
ropJP_common(codeblock_t *block, ir_data_t *ir, uint32_t dest_addr, uint32_t next_pc)
{
int jump_uop;
uop_CALL_FUNC_RESULT(ir, IREG_temp0, PF_SET);
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_temp0, 0);
uop_MOV_IMM(ir, IREG_pc, dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
return 0;
}
static int
ropJNP_common(codeblock_t *block, ir_data_t *ir, uint32_t dest_addr, uint32_t next_pc)
{
int jump_uop;
uop_CALL_FUNC_RESULT(ir, IREG_temp0, PF_SET);
jump_uop = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
uop_MOV_IMM(ir, IREG_pc, dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
return 0;
}
static int
ropJL_common(codeblock_t *block, ir_data_t *ir, uint32_t dest_addr, uint32_t next_pc)
{
int jump_uop;
int do_unroll = ((NF_SET() ? 1 : 0) != (VF_SET() ? 1 : 0) && codegen_can_unroll(block, ir, next_pc, dest_addr));
switch (codegen_flags_changed ? cpu_state.flags_op : FLAGS_UNKNOWN) {
case FLAGS_ZN8:
/*V flag is always clear. Condition is true if N is set*/
if (do_unroll)
jump_uop = uop_TEST_JS_DEST(ir, IREG_flags_res_B);
else
jump_uop = uop_TEST_JNS_DEST(ir, IREG_flags_res_B);
break;
case FLAGS_ZN16:
if (do_unroll)
jump_uop = uop_TEST_JS_DEST(ir, IREG_flags_res_W);
else
jump_uop = uop_TEST_JNS_DEST(ir, IREG_flags_res_W);
break;
case FLAGS_ZN32:
if (do_unroll)
jump_uop = uop_TEST_JS_DEST(ir, IREG_flags_res);
else
jump_uop = uop_TEST_JNS_DEST(ir, IREG_flags_res);
break;
case FLAGS_SUB8:
case FLAGS_DEC8:
if (do_unroll)
jump_uop = uop_CMP_JL_DEST(ir, IREG_flags_op1_B, IREG_flags_op2_B);
else
jump_uop = uop_CMP_JNL_DEST(ir, IREG_flags_op1_B, IREG_flags_op2_B);
break;
case FLAGS_SUB16:
case FLAGS_DEC16:
if (do_unroll)
jump_uop = uop_CMP_JL_DEST(ir, IREG_flags_op1_W, IREG_flags_op2_W);
else
jump_uop = uop_CMP_JNL_DEST(ir, IREG_flags_op1_W, IREG_flags_op2_W);
break;
case FLAGS_SUB32:
case FLAGS_DEC32:
if (do_unroll)
jump_uop = uop_CMP_JL_DEST(ir, IREG_flags_op1, IREG_flags_op2);
else
jump_uop = uop_CMP_JNL_DEST(ir, IREG_flags_op1, IREG_flags_op2);
break;
case FLAGS_UNKNOWN:
default:
uop_CALL_FUNC_RESULT(ir, IREG_temp0, NF_SET_01);
uop_CALL_FUNC_RESULT(ir, IREG_temp1, VF_SET_01);
if (do_unroll)
jump_uop = uop_CMP_JNZ_DEST(ir, IREG_temp0, IREG_temp1);
else
jump_uop = uop_CMP_JZ_DEST(ir, IREG_temp0, IREG_temp1);
break;
}
if (do_unroll)
uop_MOV_IMM(ir, IREG_pc, next_pc);
else
uop_MOV_IMM(ir, IREG_pc, dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
return do_unroll ? 1 : 0;
}
static int
ropJNL_common(codeblock_t *block, ir_data_t *ir, uint32_t dest_addr, uint32_t next_pc)
{
int jump_uop;
int do_unroll = ((NF_SET() ? 1 : 0) == (VF_SET() ? 1 : 0) && codegen_can_unroll(block, ir, next_pc, dest_addr));
switch (codegen_flags_changed ? cpu_state.flags_op : FLAGS_UNKNOWN) {
case FLAGS_ZN8:
/*V flag is always clear. Condition is true if N is set*/
if (do_unroll)
jump_uop = uop_TEST_JNS_DEST(ir, IREG_flags_res_B);
else
jump_uop = uop_TEST_JS_DEST(ir, IREG_flags_res_B);
break;
case FLAGS_ZN16:
if (do_unroll)
jump_uop = uop_TEST_JNS_DEST(ir, IREG_flags_res_W);
else
jump_uop = uop_TEST_JS_DEST(ir, IREG_flags_res_W);
break;
case FLAGS_ZN32:
if (do_unroll)
jump_uop = uop_TEST_JNS_DEST(ir, IREG_flags_res);
else
jump_uop = uop_TEST_JS_DEST(ir, IREG_flags_res);
break;
case FLAGS_SUB8:
case FLAGS_DEC8:
if (do_unroll)
jump_uop = uop_CMP_JNL_DEST(ir, IREG_flags_op1_B, IREG_flags_op2_B);
else
jump_uop = uop_CMP_JL_DEST(ir, IREG_flags_op1_B, IREG_flags_op2_B);
break;
case FLAGS_SUB16:
case FLAGS_DEC16:
if (do_unroll)
jump_uop = uop_CMP_JNL_DEST(ir, IREG_flags_op1_W, IREG_flags_op2_W);
else
jump_uop = uop_CMP_JL_DEST(ir, IREG_flags_op1_W, IREG_flags_op2_W);
break;
case FLAGS_SUB32:
case FLAGS_DEC32:
if (do_unroll)
jump_uop = uop_CMP_JNL_DEST(ir, IREG_flags_op1, IREG_flags_op2);
else
jump_uop = uop_CMP_JL_DEST(ir, IREG_flags_op1, IREG_flags_op2);
break;
case FLAGS_UNKNOWN:
default:
uop_CALL_FUNC_RESULT(ir, IREG_temp0, NF_SET_01);
uop_CALL_FUNC_RESULT(ir, IREG_temp1, VF_SET_01);
if (do_unroll)
jump_uop = uop_CMP_JZ_DEST(ir, IREG_temp0, IREG_temp1);
else
jump_uop = uop_CMP_JNZ_DEST(ir, IREG_temp0, IREG_temp1);
break;
}
if (do_unroll)
uop_MOV_IMM(ir, IREG_pc, next_pc);
else
uop_MOV_IMM(ir, IREG_pc, dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
return do_unroll ? 1 : 0;
}
static int
ropJLE_common(codeblock_t *block, ir_data_t *ir, uint32_t dest_addr, uint32_t next_pc)
{
int jump_uop, jump_uop2 = -1;
int do_unroll = (((NF_SET() ? 1 : 0) != (VF_SET() ? 1 : 0) || ZF_SET()) && codegen_can_unroll(block, ir, next_pc, dest_addr));
switch (codegen_flags_changed ? cpu_state.flags_op : FLAGS_UNKNOWN) {
case FLAGS_SUB8:
case FLAGS_DEC8:
if (do_unroll)
jump_uop = uop_CMP_JLE_DEST(ir, IREG_flags_op1_B, IREG_flags_op2_B);
else
jump_uop = uop_CMP_JNLE_DEST(ir, IREG_flags_op1_B, IREG_flags_op2_B);
break;
case FLAGS_SUB16:
case FLAGS_DEC16:
if (do_unroll)
jump_uop = uop_CMP_JLE_DEST(ir, IREG_flags_op1_W, IREG_flags_op2_W);
else
jump_uop = uop_CMP_JNLE_DEST(ir, IREG_flags_op1_W, IREG_flags_op2_W);
break;
case FLAGS_SUB32:
case FLAGS_DEC32:
if (do_unroll)
jump_uop = uop_CMP_JLE_DEST(ir, IREG_flags_op1, IREG_flags_op2);
else
jump_uop = uop_CMP_JNLE_DEST(ir, IREG_flags_op1, IREG_flags_op2);
break;
case FLAGS_UNKNOWN:
default:
if (do_unroll) {
uop_CALL_FUNC_RESULT(ir, IREG_temp0, ZF_SET);
jump_uop2 = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
uop_CALL_FUNC_RESULT(ir, IREG_temp0, NF_SET_01);
uop_CALL_FUNC_RESULT(ir, IREG_temp1, VF_SET_01);
jump_uop = uop_CMP_JNZ_DEST(ir, IREG_temp0, IREG_temp1);
} else {
uop_CALL_FUNC_RESULT(ir, IREG_temp0, ZF_SET);
jump_uop2 = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
uop_CALL_FUNC_RESULT(ir, IREG_temp0, NF_SET_01);
uop_CALL_FUNC_RESULT(ir, IREG_temp1, VF_SET_01);
jump_uop = uop_CMP_JZ_DEST(ir, IREG_temp0, IREG_temp1);
}
break;
}
if (do_unroll) {
uop_MOV_IMM(ir, IREG_pc, next_pc);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
if (jump_uop2 != -1)
uop_set_jump_dest(ir, jump_uop2);
return 1;
} else {
if (jump_uop2 != -1)
uop_set_jump_dest(ir, jump_uop2);
uop_MOV_IMM(ir, IREG_pc, dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
return 0;
}
}
static int
ropJNLE_common(codeblock_t *block, ir_data_t *ir, uint32_t dest_addr, uint32_t next_pc)
{
int jump_uop, jump_uop2 = -1;
int do_unroll = ((NF_SET() ? 1 : 0) == (VF_SET() ? 1 : 0) && !ZF_SET() && codegen_can_unroll(block, ir, next_pc, dest_addr));
switch (codegen_flags_changed ? cpu_state.flags_op : FLAGS_UNKNOWN) {
case FLAGS_SUB8:
case FLAGS_DEC8:
if (do_unroll)
jump_uop = uop_CMP_JNLE_DEST(ir, IREG_flags_op1_B, IREG_flags_op2_B);
else
jump_uop = uop_CMP_JLE_DEST(ir, IREG_flags_op1_B, IREG_flags_op2_B);
break;
case FLAGS_SUB16:
case FLAGS_DEC16:
if (do_unroll)
jump_uop = uop_CMP_JNLE_DEST(ir, IREG_flags_op1_W, IREG_flags_op2_W);
else
jump_uop = uop_CMP_JLE_DEST(ir, IREG_flags_op1_W, IREG_flags_op2_W);
break;
case FLAGS_SUB32:
case FLAGS_DEC32:
if (do_unroll)
jump_uop = uop_CMP_JNLE_DEST(ir, IREG_flags_op1, IREG_flags_op2);
else
jump_uop = uop_CMP_JLE_DEST(ir, IREG_flags_op1, IREG_flags_op2);
break;
case FLAGS_UNKNOWN:
default:
if (do_unroll) {
uop_CALL_FUNC_RESULT(ir, IREG_temp0, ZF_SET);
jump_uop2 = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
uop_CALL_FUNC_RESULT(ir, IREG_temp0, NF_SET_01);
uop_CALL_FUNC_RESULT(ir, IREG_temp1, VF_SET_01);
jump_uop = uop_CMP_JZ_DEST(ir, IREG_temp0, IREG_temp1);
} else {
uop_CALL_FUNC_RESULT(ir, IREG_temp0, ZF_SET);
jump_uop2 = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
uop_CALL_FUNC_RESULT(ir, IREG_temp0, NF_SET_01);
uop_CALL_FUNC_RESULT(ir, IREG_temp1, VF_SET_01);
jump_uop = uop_CMP_JNZ_DEST(ir, IREG_temp0, IREG_temp1);
}
break;
}
if (do_unroll) {
if (jump_uop2 != -1)
uop_set_jump_dest(ir, jump_uop2);
uop_MOV_IMM(ir, IREG_pc, next_pc);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
return 1;
} else {
uop_MOV_IMM(ir, IREG_pc, dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
if (jump_uop2 != -1)
uop_set_jump_dest(ir, jump_uop2);
return 0;
}
}
#define ropJ(cond) \
uint32_t ropJ##cond##_8(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc) \
{ \
uint32_t offset = (int32_t) (int8_t) fastreadb(cs + op_pc); \
uint32_t dest_addr = op_pc + 1 + offset; \
int ret; \
\
if (!(op_32 & 0x100)) \
dest_addr &= 0xffff; \
ret = ropJ##cond##_common(block, ir, dest_addr, op_pc + 1); \
\
codegen_mark_code_present(block, cs + op_pc, 1); \
return ret ? dest_addr : (op_pc + 1); \
} \
uint32_t ropJ##cond##_16(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc) \
{ \
uint32_t offset = (int32_t) (int16_t) fastreadw(cs + op_pc); \
uint32_t dest_addr = (op_pc + 2 + offset) & 0xffff; \
int ret; \
\
ret = ropJ##cond##_common(block, ir, dest_addr, op_pc + 2); \
\
codegen_mark_code_present(block, cs + op_pc, 2); \
return ret ? dest_addr : (op_pc + 2); \
} \
uint32_t ropJ##cond##_32(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc) \
{ \
uint32_t offset = fastreadl(cs + op_pc); \
uint32_t dest_addr = op_pc + 4 + offset; \
int ret; \
\
ret = ropJ##cond##_common(block, ir, dest_addr, op_pc + 4); \
\
codegen_mark_code_present(block, cs + op_pc, 4); \
return ret ? dest_addr : (op_pc + 4); \
}
ropJ(O)
ropJ(NO)
ropJ(B)
ropJ(NB)
ropJ(E)
ropJ(NE)
ropJ(BE)
ropJ(NBE)
ropJ(S)
ropJ(NS)
ropJ(P)
ropJ(NP)
ropJ(L)
ropJ(NL)
ropJ(LE)
ropJ(NLE)
uint32_t ropJCXZ(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc)
{
uint32_t offset = (int32_t) (int8_t) fastreadb(cs + op_pc);
uint32_t dest_addr = op_pc + 1 + offset;
int jump_uop;
if (!(op_32 & 0x100))
dest_addr &= 0xffff;
if (op_32 & 0x200)
jump_uop = uop_CMP_IMM_JNZ_DEST(ir, IREG_ECX, 0);
else
jump_uop = uop_CMP_IMM_JNZ_DEST(ir, IREG_CX, 0);
uop_MOV_IMM(ir, IREG_pc, dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
codegen_mark_code_present(block, cs + op_pc, 1);
return op_pc + 1;
}
uint32_t
ropLOOP(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc)
{
uint32_t offset = (int32_t) (int8_t) fastreadb(cs + op_pc);
uint32_t dest_addr = op_pc + 1 + offset;
uint32_t ret_addr;
int jump_uop;
if (!(op_32 & 0x100))
dest_addr &= 0xffff;
if (((op_32 & 0x200) ? ECX : CX) != 1 && codegen_can_unroll(block, ir, op_pc + 1, dest_addr)) {
if (op_32 & 0x200) {
uop_SUB_IMM(ir, IREG_ECX, IREG_ECX, 1);
jump_uop = uop_CMP_IMM_JNZ_DEST(ir, IREG_ECX, 0);
} else {
uop_SUB_IMM(ir, IREG_CX, IREG_CX, 1);
jump_uop = uop_CMP_IMM_JNZ_DEST(ir, IREG_CX, 0);
}
uop_MOV_IMM(ir, IREG_pc, op_pc + 1);
ret_addr = dest_addr;
CPU_BLOCK_END();
} else {
if (op_32 & 0x200) {
uop_SUB_IMM(ir, IREG_ECX, IREG_ECX, 1);
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_ECX, 0);
} else {
uop_SUB_IMM(ir, IREG_CX, IREG_CX, 1);
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_CX, 0);
}
uop_MOV_IMM(ir, IREG_pc, dest_addr);
ret_addr = op_pc + 1;
}
uop_JMP(ir, codegen_exit_rout);
uop_set_jump_dest(ir, jump_uop);
codegen_mark_code_present(block, cs + op_pc, 1);
return ret_addr;
}
uint32_t
ropLOOPE(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc)
{
uint32_t offset = (int32_t) (int8_t) fastreadb(cs + op_pc);
uint32_t dest_addr = op_pc + 1 + offset;
int jump_uop, jump_uop2;
if (!(op_32 & 0x100))
dest_addr &= 0xffff;
if (op_32 & 0x200) {
uop_SUB_IMM(ir, IREG_ECX, IREG_ECX, 1);
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_ECX, 0);
} else {
uop_SUB_IMM(ir, IREG_CX, IREG_CX, 1);
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_CX, 0);
}
if (!codegen_flags_changed || !flags_res_valid()) {
uop_CALL_FUNC_RESULT(ir, IREG_temp0, ZF_SET);
jump_uop2 = uop_CMP_IMM_JZ_DEST(ir, IREG_temp0, 0);
} else {
jump_uop2 = uop_CMP_IMM_JNZ_DEST(ir, IREG_flags_res, 0);
}
uop_MOV_IMM(ir, IREG_pc, dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_NOP_BARRIER(ir);
uop_set_jump_dest(ir, jump_uop);
uop_set_jump_dest(ir, jump_uop2);
codegen_mark_code_present(block, cs + op_pc, 1);
return op_pc + 1;
}
uint32_t
ropLOOPNE(codeblock_t *block, ir_data_t *ir, uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uint32_t op_pc)
{
uint32_t offset = (int32_t) (int8_t) fastreadb(cs + op_pc);
uint32_t dest_addr = op_pc + 1 + offset;
int jump_uop, jump_uop2;
if (!(op_32 & 0x100))
dest_addr &= 0xffff;
if (op_32 & 0x200) {
uop_SUB_IMM(ir, IREG_ECX, IREG_ECX, 1);
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_ECX, 0);
} else {
uop_SUB_IMM(ir, IREG_CX, IREG_CX, 1);
jump_uop = uop_CMP_IMM_JZ_DEST(ir, IREG_CX, 0);
}
if (!codegen_flags_changed || !flags_res_valid()) {
uop_CALL_FUNC_RESULT(ir, IREG_temp0, ZF_SET);
jump_uop2 = uop_CMP_IMM_JNZ_DEST(ir, IREG_temp0, 0);
} else {
jump_uop2 = uop_CMP_IMM_JZ_DEST(ir, IREG_flags_res, 0);
}
uop_MOV_IMM(ir, IREG_pc, dest_addr);
uop_JMP(ir, codegen_exit_rout);
uop_NOP_BARRIER(ir);
uop_set_jump_dest(ir, jump_uop);
uop_set_jump_dest(ir, jump_uop2);
codegen_mark_code_present(block, cs + op_pc, 1);
return op_pc + 1;
}
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