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Added code generation for :

Browse source 
- TEST immediate
- register versions of NOT and NEG
- fixed shift versions of SHL, SHR and SAR
- MOVZX and MOVSX
- LEA
- CMP with memory destination
- JL, JNL, JLE, JNLE, JBE, JNBE
This commit is contained in:
TomW 2015-05-30 17:08:54 +01:00
commit 9061c5d2fc
8 changed files with 683 additions and 36 deletions
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232
src/codegen_ops_x86.h
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@ -394,7 +394,63 @@ static void CALL_FUNC(void *dest)
addlong(((uint8_t *)dest - (uint8_t *)(&codeblock[block_current].data[block_pos + 4])));
}
static void SHL_B_IMM(int reg, int count)
{
addbyte(0xc0); /*SHL reg, count*/
addbyte(0xc0 | reg | 0x20);
addbyte(count);
}
static void SHL_W_IMM(int reg, int count)
{
addbyte(0x66); /*SHL reg, count*/
addbyte(0xc1);
addbyte(0xc0 | reg | 0x20);
addbyte(count);
}
static void SHL_L_IMM(int reg, int count)
{
addbyte(0xc1); /*SHL reg, count*/
addbyte(0xc0 | reg | 0x20);
addbyte(count);
}
static void SHR_B_IMM(int reg, int count)
{
addbyte(0xc0); /*SHR reg, count*/
addbyte(0xc0 | reg | 0x28);
addbyte(count);
}
static void SHR_W_IMM(int reg, int count)
{
addbyte(0x66); /*SHR reg, count*/
addbyte(0xc1);
addbyte(0xc0 | reg | 0x28);
addbyte(count);
}
static void SHR_L_IMM(int reg, int count)
{
addbyte(0xc1); /*SHR reg, count*/
addbyte(0xc0 | reg | 0x28);
addbyte(count);
}
static void SAR_B_IMM(int reg, int count)
{
addbyte(0xc0); /*SAR reg, count*/
addbyte(0xc0 | reg | 0x38);
addbyte(count);
}
static void SAR_W_IMM(int reg, int count)
{
addbyte(0x66); /*SAR reg, count*/
addbyte(0xc1);
addbyte(0xc0 | reg | 0x38);
addbyte(count);
}
static void SAR_L_IMM(int reg, int count)
{
addbyte(0xc1); /*SAR reg, count*/
addbyte(0xc0 | reg | 0x38);
addbyte(count);
}
static void CHECK_SEG_READ(x86seg *seg)
@ -1215,6 +1271,142 @@ static void TEST_NONZERO_JUMP_L(int host_reg, uint32_t new_pc, int taken_cycles)
addlong(BLOCK_EXIT_OFFSET - (block_pos + 4));
}
static int BRANCH_COND_BE(int pc_offset, uint32_t op_pc, uint32_t offset, int not)
{
if (codegen_flags_changed && flags_op != FLAGS_UNKNOWN)
{
addbyte(0x83); /*CMP flags_res, 0*/
addbyte(0x05 | 0x38);
addlong((uintptr_t)&flags_res);
addbyte(0);
addbyte(0x74); /*JZ +*/
}
else
{
CALL_FUNC(ZF_SET);
addbyte(0x85); /*TEST EAX,EAX*/
addbyte(0xc0);
addbyte(0x75); /*JNZ +*/
}
if (not)
addbyte(5+2+2+10+5+(timing_bt ? 7 : 0));
else
addbyte(5+2+2);
CALL_FUNC(CF_SET);
addbyte(0x85); /*TEST EAX,EAX*/
addbyte(0xc0);
if (not)
addbyte(0x75); /*JNZ +*/
else
addbyte(0x74); /*JZ +*/
addbyte(10+5+(timing_bt ? 7 : 0));
addbyte(0xC7); /*MOVL [pc], new_pc*/
addbyte(0x05);
addlong((uintptr_t)&pc);
addlong(op_pc+pc_offset+offset);
if (timing_bt)
{
addbyte(0x83); /*SUB $codegen_block_cycles, cyclcs*/
addbyte(0x2d);
addlong((uintptr_t)&cycles);
addbyte(timing_bt);
}
addbyte(0xe9); /*JMP end*/
addlong(BLOCK_EXIT_OFFSET - (block_pos + 4));
}
static int BRANCH_COND_L(int pc_offset, uint32_t op_pc, uint32_t offset, int not)
{
CALL_FUNC(NF_SET);
addbyte(0x85); /*TEST EAX,EAX*/
addbyte(0xc0);
addbyte(0x0f); /*SETNE BL*/
addbyte(0x95);
addbyte(0xc3);
CALL_FUNC(VF_SET);
addbyte(0x85); /*TEST EAX,EAX*/
addbyte(0xc0);
addbyte(0x0f); /*SETNE AL*/
addbyte(0x95);
addbyte(0xc0);
addbyte(0x38); /*CMP AL, BL*/
addbyte(0xd8);
if (not)
addbyte(0x75); /*JNZ +*/
else
addbyte(0x74); /*JZ +*/
addbyte(10+5+(timing_bt ? 7 : 0));
addbyte(0xC7); /*MOVL [pc], new_pc*/
addbyte(0x05);
addlong((uintptr_t)&pc);
addlong(op_pc+pc_offset+offset);
if (timing_bt)
{
addbyte(0x83); /*SUB $codegen_block_cycles, cyclcs*/
addbyte(0x2d);
addlong((uintptr_t)&cycles);
addbyte(timing_bt);
}
addbyte(0xe9); /*JMP end*/
addlong(BLOCK_EXIT_OFFSET - (block_pos + 4));
}
static int BRANCH_COND_LE(int pc_offset, uint32_t op_pc, uint32_t offset, int not)
{
if (codegen_flags_changed && flags_op != FLAGS_UNKNOWN)
{
addbyte(0x83); /*CMP flags_res, 0*/
addbyte(0x05 | 0x38);
addlong((uintptr_t)&flags_res);
addbyte(0);
addbyte(0x74); /*JZ +*/
}
else
{
CALL_FUNC(ZF_SET);
addbyte(0x85); /*TEST EAX,EAX*/
addbyte(0xc0);
addbyte(0x75); /*JNZ +*/
}
if (not)
addbyte(5+2+3+5+2+3+2+2+10+5+(timing_bt ? 7 : 0));
else
addbyte(5+2+3+5+2+3+2+2);
CALL_FUNC(NF_SET);
addbyte(0x85); /*TEST EAX,EAX*/
addbyte(0xc0);
addbyte(0x0f); /*SETNE BL*/
addbyte(0x95);
addbyte(0xc3);
CALL_FUNC(VF_SET);
addbyte(0x85); /*TEST EAX,EAX*/
addbyte(0xc0);
addbyte(0x0f); /*SETNE AL*/
addbyte(0x95);
addbyte(0xc0);
addbyte(0x38); /*CMP AL, BL*/
addbyte(0xd8);
if (not)
addbyte(0x75); /*JNZ +*/
else
addbyte(0x74); /*JZ +*/
addbyte(10+5+(timing_bt ? 7 : 0));
addbyte(0xC7); /*MOVL [pc], new_pc*/
addbyte(0x05);
addlong((uintptr_t)&pc);
addlong(op_pc+pc_offset+offset);
if (timing_bt)
{
addbyte(0x83); /*SUB $codegen_block_cycles, cyclcs*/
addbyte(0x2d);
addlong((uintptr_t)&cycles);
addbyte(timing_bt);
}
addbyte(0xe9); /*JMP end*/
addlong(BLOCK_EXIT_OFFSET - (block_pos + 4));
}
static void FP_ENTER()
{
@ -1758,3 +1950,41 @@ static void FP_OP_REG(int op, int dst, int src)
addbyte(0xc6);
}
}
static void ZERO_EXTEND_W_B(int reg)
{
addbyte(0x0f); /*MOVZX regl, regb*/
addbyte(0xb6);
addbyte(0xc0 | reg | (reg << 3));
}
static void ZERO_EXTEND_L_B(int reg)
{
addbyte(0x0f); /*MOVZX regl, regb*/
addbyte(0xb6);
addbyte(0xc0 | reg | (reg << 3));
}
static void ZERO_EXTEND_L_W(int reg)
{
addbyte(0x0f); /*MOVZX regl, regw*/
addbyte(0xb7);
addbyte(0xc0 | reg | (reg << 3));
}
static void SIGN_EXTEND_W_B(int reg)
{
addbyte(0x0f); /*MOVSX regl, regb*/
addbyte(0xbe);
addbyte(0xc0 | reg | (reg << 3));
}
static void SIGN_EXTEND_L_B(int reg)
{
addbyte(0x0f); /*MOVSX regl, regb*/
addbyte(0xbe);
addbyte(0xc0 | reg | (reg << 3));
}
static void SIGN_EXTEND_L_W(int reg)
{
addbyte(0x0f); /*MOVSX regl, regw*/
addbyte(0xbf);
addbyte(0xc0 | reg | (reg << 3));
}