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Diffstat (limited to 'deps/v8/src/diagnostics/ia32/disasm-ia32.cc')
-rw-r--r--deps/v8/src/diagnostics/ia32/disasm-ia32.cc124
1 files changed, 65 insertions, 59 deletions
diff --git a/deps/v8/src/diagnostics/ia32/disasm-ia32.cc b/deps/v8/src/diagnostics/ia32/disasm-ia32.cc
index 534898fdf5..e8c9588bbe 100644
--- a/deps/v8/src/diagnostics/ia32/disasm-ia32.cc
+++ b/deps/v8/src/diagnostics/ia32/disasm-ia32.cc
@@ -184,6 +184,24 @@ void InstructionTable::AddJumpConditionalShort() {
}
}
+namespace {
+int8_t Imm8(const uint8_t* data) {
+ return *reinterpret_cast<const int8_t*>(data);
+}
+uint8_t Imm8_U(const uint8_t* data) {
+ return *reinterpret_cast<const uint8_t*>(data);
+}
+int16_t Imm16(const uint8_t* data) {
+ return *reinterpret_cast<const int16_t*>(data);
+}
+uint16_t Imm16_U(const uint8_t* data) {
+ return *reinterpret_cast<const uint16_t*>(data);
+}
+int32_t Imm32(const uint8_t* data) {
+ return *reinterpret_cast<const int32_t*>(data);
+}
+} // namespace
+
// The IA32 disassembler implementation.
class DisassemblerIA32 {
public:
@@ -373,8 +391,7 @@ int DisassemblerIA32::PrintRightOperandHelper(
switch (mod) {
case 0:
if (rm == ebp) {
- int32_t disp = *reinterpret_cast<int32_t*>(modrmp + 1);
- AppendToBuffer("[0x%x]", disp);
+ AppendToBuffer("[0x%x]", Imm32(modrmp + 1));
return 5;
} else if (rm == esp) {
byte sib = *(modrmp + 1);
@@ -384,7 +401,7 @@ int DisassemblerIA32::PrintRightOperandHelper(
AppendToBuffer("[%s]", (this->*register_name)(rm));
return 2;
} else if (base == ebp) {
- int32_t disp = *reinterpret_cast<int32_t*>(modrmp + 2);
+ int32_t disp = Imm32(modrmp + 2);
AppendToBuffer("[%s*%d%s0x%x]", (this->*register_name)(index),
1 << scale, disp < 0 ? "-" : "+",
disp < 0 ? -disp : disp);
@@ -409,8 +426,7 @@ int DisassemblerIA32::PrintRightOperandHelper(
byte sib = *(modrmp + 1);
int scale, index, base;
get_sib(sib, &scale, &index, &base);
- int disp = mod == 2 ? *reinterpret_cast<int32_t*>(modrmp + 2)
- : *reinterpret_cast<int8_t*>(modrmp + 2);
+ int disp = mod == 2 ? Imm32(modrmp + 2) : Imm8(modrmp + 2);
if (index == base && index == rm /*esp*/ && scale == 0 /*times_1*/) {
AppendToBuffer("[%s%s0x%x]", (this->*register_name)(rm),
disp < 0 ? "-" : "+", disp < 0 ? -disp : disp);
@@ -422,8 +438,7 @@ int DisassemblerIA32::PrintRightOperandHelper(
return mod == 2 ? 6 : 3;
} else {
// No sib.
- int disp = mod == 2 ? *reinterpret_cast<int32_t*>(modrmp + 1)
- : *reinterpret_cast<int8_t*>(modrmp + 1);
+ int disp = mod == 2 ? Imm32(modrmp + 1) : Imm8(modrmp + 1);
AppendToBuffer("[%s%s0x%x]", (this->*register_name)(rm),
disp < 0 ? "-" : "+", disp < 0 ? -disp : disp);
return mod == 2 ? 5 : 2;
@@ -517,7 +532,7 @@ int DisassemblerIA32::PrintImmediateOp(byte* data) {
AppendToBuffer(",0x%x", *(data + 1 + count));
return 1 + count + 1 /*int8*/;
} else {
- AppendToBuffer(",0x%x", *reinterpret_cast<int32_t*>(data + 1 + count));
+ AppendToBuffer(",0x%x", Imm32(data + 1 + count));
return 1 + count + 4 /*int32_t*/;
}
}
@@ -557,7 +572,7 @@ int DisassemblerIA32::F7Instruction(byte* data) {
AppendToBuffer("%s ", mnem);
int count = PrintRightOperand(data);
if (regop == 0) {
- AppendToBuffer(",0x%x", *reinterpret_cast<int32_t*>(data + count));
+ AppendToBuffer(",0x%x", Imm32(data + count));
count += 4;
}
return 1 + count;
@@ -627,7 +642,7 @@ int DisassemblerIA32::JumpShort(byte* data) {
int DisassemblerIA32::JumpConditional(byte* data, const char* comment) {
DCHECK_EQ(0x0F, *data);
byte cond = *(data + 1) & 0x0F;
- byte* dest = data + *reinterpret_cast<int32_t*>(data + 2) + 6;
+ byte* dest = data + Imm32(data + 2) + 6;
const char* mnem = jump_conditional_mnem[cond];
AppendToBuffer("%s %s", mnem, NameOfAddress(dest));
if (comment != nullptr) {
@@ -775,56 +790,53 @@ int DisassemblerIA32::AVXInstruction(byte* data) {
AppendToBuffer("vpblendw %s,%s,", NameOfXMMRegister(regop),
NameOfXMMRegister(vvvv));
current += PrintRightXMMOperand(current);
- AppendToBuffer(",%d", *reinterpret_cast<uint8_t*>(current));
+ AppendToBuffer(",%d", Imm8_U(current));
current++;
break;
case 0x0F:
AppendToBuffer("vpalignr %s,%s,", NameOfXMMRegister(regop),
NameOfXMMRegister(vvvv));
current += PrintRightXMMOperand(current);
- AppendToBuffer(",%d", *reinterpret_cast<uint8_t*>(current));
+ AppendToBuffer(",%d", Imm8_U(current));
current++;
break;
case 0x14:
AppendToBuffer("vpextrb ");
current += PrintRightOperand(current);
- AppendToBuffer(",%s,%d", NameOfXMMRegister(regop),
- *reinterpret_cast<int8_t*>(current));
+ AppendToBuffer(",%s,%d", NameOfXMMRegister(regop), Imm8(current));
current++;
break;
case 0x15:
AppendToBuffer("vpextrw ");
current += PrintRightOperand(current);
- AppendToBuffer(",%s,%d", NameOfXMMRegister(regop),
- *reinterpret_cast<int8_t*>(current));
+ AppendToBuffer(",%s,%d", NameOfXMMRegister(regop), Imm8(current));
current++;
break;
case 0x16:
AppendToBuffer("vpextrd ");
current += PrintRightOperand(current);
- AppendToBuffer(",%s,%d", NameOfXMMRegister(regop),
- *reinterpret_cast<int8_t*>(current));
+ AppendToBuffer(",%s,%d", NameOfXMMRegister(regop), Imm8(current));
current++;
break;
case 0x20:
AppendToBuffer("vpinsrb %s,%s,", NameOfXMMRegister(regop),
NameOfXMMRegister(vvvv));
current += PrintRightOperand(current);
- AppendToBuffer(",%d", *reinterpret_cast<int8_t*>(current));
+ AppendToBuffer(",%d", Imm8(current));
current++;
break;
case 0x21:
AppendToBuffer("vinsertps %s,%s,", NameOfXMMRegister(regop),
NameOfXMMRegister(vvvv));
current += PrintRightXMMOperand(current);
- AppendToBuffer(",%d", *reinterpret_cast<int8_t*>(current));
+ AppendToBuffer(",%d", Imm8(current));
current++;
break;
case 0x22:
AppendToBuffer("vpinsrd %s,%s,", NameOfXMMRegister(regop),
NameOfXMMRegister(vvvv));
current += PrintRightOperand(current);
- AppendToBuffer(",%d", *reinterpret_cast<int8_t*>(current));
+ AppendToBuffer(",%d", Imm8(current));
current++;
break;
default:
@@ -872,7 +884,7 @@ int DisassemblerIA32::AVXInstruction(byte* data) {
case 0x70:
AppendToBuffer("vpshuflw %s,", NameOfXMMRegister(regop));
current += PrintRightXMMOperand(current);
- AppendToBuffer(",%d", *reinterpret_cast<int8_t*>(current));
+ AppendToBuffer(",%d", Imm8(current));
current++;
break;
case 0x7C:
@@ -933,7 +945,7 @@ int DisassemblerIA32::AVXInstruction(byte* data) {
case 0x70:
AppendToBuffer("vpshufhw %s,", NameOfXMMRegister(regop));
current += PrintRightXMMOperand(current);
- AppendToBuffer(",%d", *reinterpret_cast<int8_t*>(current));
+ AppendToBuffer(",%d", Imm8(current));
current++;
break;
case 0x7f:
@@ -1173,7 +1185,7 @@ int DisassemblerIA32::AVXInstruction(byte* data) {
case 0x70:
AppendToBuffer("vpshufd %s,", NameOfXMMRegister(regop));
current += PrintRightXMMOperand(current);
- AppendToBuffer(",%d", *reinterpret_cast<int8_t*>(current));
+ AppendToBuffer(",%d", Imm8(current));
current++;
break;
case 0x71:
@@ -1197,7 +1209,7 @@ int DisassemblerIA32::AVXInstruction(byte* data) {
AppendToBuffer("vpinsrw %s,%s,", NameOfXMMRegister(regop),
NameOfXMMRegister(vvvv));
current += PrintRightOperand(current);
- AppendToBuffer(",%d", *reinterpret_cast<int8_t*>(current));
+ AppendToBuffer(",%d", Imm8(current));
current++;
break;
#define DECLARE_SSE_AVX_DIS_CASE(instruction, notUsed1, notUsed2, opcode) \
@@ -1615,8 +1627,7 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
break;
case MOVE_REG_INSTR: {
- byte* addr =
- reinterpret_cast<byte*>(*reinterpret_cast<int32_t*>(data + 1));
+ byte* addr = reinterpret_cast<byte*>(Imm32(data + 1));
AppendToBuffer("mov %s,%s", NameOfCPURegister(*data & 0x07),
NameOfAddress(addr));
data += 5;
@@ -1624,15 +1635,14 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
}
case CALL_JUMP_INSTR: {
- byte* addr = data + *reinterpret_cast<int32_t*>(data + 1) + 5;
+ byte* addr = data + Imm32(data + 1) + 5;
AppendToBuffer("%s %s", idesc.mnem, NameOfAddress(addr));
data += 5;
break;
}
case SHORT_IMMEDIATE_INSTR: {
- byte* addr =
- reinterpret_cast<byte*>(*reinterpret_cast<int32_t*>(data + 1));
+ byte* addr = reinterpret_cast<byte*>(Imm32(data + 1));
AppendToBuffer("%s eax,%s", idesc.mnem, NameOfAddress(addr));
data += 5;
break;
@@ -1656,7 +1666,7 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
if (!processed) {
switch (*data) {
case 0xC2:
- AppendToBuffer("ret 0x%x", *reinterpret_cast<uint16_t*>(data + 1));
+ AppendToBuffer("ret 0x%x", Imm16_U(data + 1));
data += 3;
break;
@@ -1670,7 +1680,7 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
case 0x69: {
data++;
data += PrintOperands("imul", REG_OPER_OP_ORDER, data);
- AppendToBuffer(",%d", *reinterpret_cast<int32_t*>(data));
+ AppendToBuffer(",%d", Imm32(data));
data += 4;
} break;
@@ -1860,6 +1870,9 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
int mod, regop, rm;
get_modrm(*data, &mod, &regop, &rm);
data += PrintRightOperand(data);
+ } else if (f0byte == 0xAE && (data[2] & 0xF8) == 0xF0) {
+ AppendToBuffer("mfence");
+ data += 3;
} else if (f0byte == 0xAE && (data[2] & 0xF8) == 0xE8) {
AppendToBuffer("lfence");
data += 3;
@@ -1920,8 +1933,7 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
} else {
AppendToBuffer("%s ", "mov");
data += PrintRightOperand(data);
- int32_t imm = *reinterpret_cast<int32_t*>(data);
- AppendToBuffer(",0x%x", imm);
+ AppendToBuffer(",0x%x", Imm32(data));
data += 4;
}
} break;
@@ -1980,8 +1992,7 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
data++;
AppendToBuffer("cmpw ");
data += PrintRightOperand(data);
- int imm = *reinterpret_cast<int16_t*>(data);
- AppendToBuffer(",0x%x", imm);
+ AppendToBuffer(",0x%x", Imm16(data));
data += 2;
} else if (*data == 0x87) {
data++;
@@ -2005,15 +2016,13 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
data++;
AppendToBuffer("%s ", "mov_w");
data += PrintRightOperand(data);
- int imm = *reinterpret_cast<int16_t*>(data);
- AppendToBuffer(",0x%x", imm);
+ AppendToBuffer(",0x%x", Imm16(data));
data += 2;
} else if (*data == 0xF7) {
data++;
AppendToBuffer("%s ", "test_w");
data += PrintRightOperand(data);
- int imm = *reinterpret_cast<int16_t*>(data);
- AppendToBuffer(",0x%x", imm);
+ AppendToBuffer(",0x%x", Imm16(data));
data += 2;
} else if (*data == 0x0F) {
data++;
@@ -2062,7 +2071,7 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
get_modrm(*data, &mod, &regop, &rm);
AppendToBuffer("pblendw %s,", NameOfXMMRegister(regop));
data += PrintRightXMMOperand(data);
- AppendToBuffer(",%d", *reinterpret_cast<uint8_t*>(data));
+ AppendToBuffer(",%d", Imm8_U(data));
data++;
} else if (*data == 0x0F) {
data++;
@@ -2070,7 +2079,7 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
get_modrm(*data, &mod, &regop, &rm);
AppendToBuffer("palignr %s,", NameOfXMMRegister(regop));
data += PrintRightXMMOperand(data);
- AppendToBuffer(",%d", *reinterpret_cast<uint8_t*>(data));
+ AppendToBuffer(",%d", Imm8_U(data));
data++;
} else if (*data == 0x14) {
data++;
@@ -2078,8 +2087,7 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
get_modrm(*data, &mod, &regop, &rm);
AppendToBuffer("pextrb ");
data += PrintRightOperand(data);
- AppendToBuffer(",%s,%d", NameOfXMMRegister(regop),
- *reinterpret_cast<int8_t*>(data));
+ AppendToBuffer(",%s,%d", NameOfXMMRegister(regop), Imm8(data));
data++;
} else if (*data == 0x15) {
data++;
@@ -2087,8 +2095,7 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
get_modrm(*data, &mod, &regop, &rm);
AppendToBuffer("pextrw ");
data += PrintRightOperand(data);
- AppendToBuffer(",%s,%d", NameOfXMMRegister(regop),
- *reinterpret_cast<int8_t*>(data));
+ AppendToBuffer(",%s,%d", NameOfXMMRegister(regop), Imm8(data));
data++;
} else if (*data == 0x16) {
data++;
@@ -2096,8 +2103,7 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
get_modrm(*data, &mod, &regop, &rm);
AppendToBuffer("pextrd ");
data += PrintRightOperand(data);
- AppendToBuffer(",%s,%d", NameOfXMMRegister(regop),
- *reinterpret_cast<int8_t*>(data));
+ AppendToBuffer(",%s,%d", NameOfXMMRegister(regop), Imm8(data));
data++;
} else if (*data == 0x17) {
data++;
@@ -2113,7 +2119,7 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
get_modrm(*data, &mod, &regop, &rm);
AppendToBuffer("pinsrb %s,", NameOfXMMRegister(regop));
data += PrintRightOperand(data);
- AppendToBuffer(",%d", *reinterpret_cast<int8_t*>(data));
+ AppendToBuffer(",%d", Imm8(data));
data++;
} else if (*data == 0x21) {
data++;
@@ -2121,7 +2127,7 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
get_modrm(*data, &mod, &regop, &rm);
AppendToBuffer("insertps %s,", NameOfXMMRegister(regop));
data += PrintRightXMMOperand(data);
- AppendToBuffer(",%d", *reinterpret_cast<int8_t*>(data));
+ AppendToBuffer(",%d", Imm8(data));
data++;
} else if (*data == 0x22) {
data++;
@@ -2129,7 +2135,7 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
get_modrm(*data, &mod, &regop, &rm);
AppendToBuffer("pinsrd %s,", NameOfXMMRegister(regop));
data += PrintRightOperand(data);
- AppendToBuffer(",%d", *reinterpret_cast<int8_t*>(data));
+ AppendToBuffer(",%d", Imm8(data));
data++;
} else {
UnimplementedInstruction();
@@ -2193,7 +2199,7 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
get_modrm(*data, &mod, &regop, &rm);
AppendToBuffer("pshufd %s,", NameOfXMMRegister(regop));
data += PrintRightXMMOperand(data);
- AppendToBuffer(",%d", *reinterpret_cast<int8_t*>(data));
+ AppendToBuffer(",%d", Imm8(data));
data++;
} else if (*data == 0x90) {
data++;
@@ -2257,7 +2263,7 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
get_modrm(*data, &mod, &regop, &rm);
AppendToBuffer("pinsrw %s,", NameOfXMMRegister(regop));
data += PrintRightOperand(data);
- AppendToBuffer(",%d", *reinterpret_cast<int8_t*>(data));
+ AppendToBuffer(",%d", Imm8(data));
data++;
} else if (*data == 0xE7) {
data++;
@@ -2309,22 +2315,22 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
} break;
case 0x68:
- AppendToBuffer("push 0x%x", *reinterpret_cast<int32_t*>(data + 1));
+ AppendToBuffer("push 0x%x", Imm32(data + 1));
data += 5;
break;
case 0x6A:
- AppendToBuffer("push 0x%x", *reinterpret_cast<int8_t*>(data + 1));
+ AppendToBuffer("push 0x%x", Imm8(data + 1));
data += 2;
break;
case 0xA8:
- AppendToBuffer("test al,0x%x", *reinterpret_cast<uint8_t*>(data + 1));
+ AppendToBuffer("test al,0x%x", Imm8_U(data + 1));
data += 2;
break;
case 0xA9:
- AppendToBuffer("test eax,0x%x", *reinterpret_cast<int32_t*>(data + 1));
+ AppendToBuffer("test eax,0x%x", Imm32(data + 1));
data += 5;
break;
@@ -2377,7 +2383,7 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
get_modrm(*data, &mod, &regop, &rm);
AppendToBuffer("pshuflw %s,", NameOfXMMRegister(regop));
data += PrintRightXMMOperand(data);
- AppendToBuffer(",%d", *reinterpret_cast<int8_t*>(data));
+ AppendToBuffer(",%d", Imm8(data));
data++;
} else {
const char* mnem = "?";
@@ -2477,7 +2483,7 @@ int DisassemblerIA32::InstructionDecode(v8::internal::Vector<char> out_buffer,
get_modrm(*data, &mod, &regop, &rm);
AppendToBuffer("pshufhw %s,", NameOfXMMRegister(regop));
data += PrintRightXMMOperand(data);
- AppendToBuffer(",%d", *reinterpret_cast<int8_t*>(data));
+ AppendToBuffer(",%d", Imm8(data));
data++;
} else if (b2 == 0x7F) {
AppendToBuffer("movdqu ");
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-12 18:47:08 +0000