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UserspaceEmulator: Optionally write reports to the debug log

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...and take a flag '--report-to-debug' that determines this behaviour.
This commit is contained in:
AnotherTest 2020-10-24 11:15:51 +03:30 • committed by Andreas Kling
parent 201d34f6cd
commit 9afe9069a9
8 changed files with 118 additions and 70 deletions
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40
DevTools/UserspaceEmulator/SoftCPU.cpp
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@ -34,11 +34,11 @@
# pragma GCC optimize("O3")
#endif
#define TODO_INSN() \
do { \
warnln("\n=={}== Unimplemented instruction: {}\n", getpid(), __FUNCTION__); \
m_emulator.dump_backtrace(); \
_exit(0); \
#define TODO_INSN() \
do { \
reportln("\n=={}== Unimplemented instruction: {}\n", getpid(), __FUNCTION__); \
m_emulator.dump_backtrace(); \
_exit(0); \
} while (0)
//#define MEMORY_DEBUG
@ -60,7 +60,7 @@ template<typename T>
void warn_if_uninitialized(T value_with_shadow, const char* message)
{
if (value_with_shadow.is_uninitialized()) {
dbgln("\033[31;1mWarning! Use of uninitialized value: {}\033[0m\n", message);
reportln("\033[31;1mWarning! Use of uninitialized value: {}\033[0m\n", message);
Emulator::the().dump_backtrace();
}
}
@ -68,7 +68,7 @@ void warn_if_uninitialized(T value_with_shadow, const char* message)
void SoftCPU::warn_if_flags_tainted(const char* message) const
{
if (m_flags_tainted) {
warnln("\n=={}== \033[31;1mConditional depends on uninitialized data\033[0m ({})\n", getpid(), message);
reportln("\n=={}== \033[31;1mConditional depends on uninitialized data\033[0m ({})\n", getpid(), message);
Emulator::the().dump_backtrace();
}
}
@ -1342,13 +1342,13 @@ void SoftCPU::DIV_RM16(const X86::Instruction& insn)
{
auto divisor = insn.modrm().read16(*this, insn);
if (divisor.value() == 0) {
warnln("Divide by zero");
reportln("Divide by zero");
TODO();
}
u32 dividend = ((u32)dx().value() << 16) | ax().value();
auto quotient = dividend / divisor.value();
if (quotient > NumericLimits<u16>::max()) {
warnln("Divide overflow");
reportln("Divide overflow");
TODO();
}
@ -1363,13 +1363,13 @@ void SoftCPU::DIV_RM32(const X86::Instruction& insn)
{
auto divisor = insn.modrm().read32(*this, insn);
if (divisor.value() == 0) {
warnln("Divide by zero");
reportln("Divide by zero");
TODO();
}
u64 dividend = ((u64)edx().value() << 32) | eax().value();
auto quotient = dividend / divisor.value();
if (quotient > NumericLimits<u32>::max()) {
warnln("Divide overflow");
reportln("Divide overflow");
TODO();
}
@ -1384,13 +1384,13 @@ void SoftCPU::DIV_RM8(const X86::Instruction& insn)
{
auto divisor = insn.modrm().read8(*this, insn);
if (divisor.value() == 0) {
warnln("Divide by zero");
reportln("Divide by zero");
TODO();
}
u16 dividend = ax().value();
auto quotient = dividend / divisor.value();
if (quotient > NumericLimits<u8>::max()) {
warnln("Divide overflow");
reportln("Divide overflow");
TODO();
}
@ -1405,7 +1405,7 @@ void SoftCPU::ENTER32(const X86::Instruction&) { TODO_INSN(); }
void SoftCPU::ESCAPE(const X86::Instruction&)
{
dbgln("FIXME: x87 floating-point support");
reportln("FIXME: x87 floating-point support");
m_emulator.dump_backtrace();
TODO();
}
@ -1546,13 +1546,13 @@ void SoftCPU::IDIV_RM16(const X86::Instruction& insn)
auto divisor_with_shadow = insn.modrm().read16(*this, insn);
auto divisor = (i16)divisor_with_shadow.value();
if (divisor == 0) {
warnln("Divide by zero");
reportln("Divide by zero");
TODO();
}
i32 dividend = (i32)(((u32)dx().value() << 16) | (u32)ax().value());
i32 result = dividend / divisor;
if (result > NumericLimits<i16>::max() || result < NumericLimits<i16>::min()) {
warnln("Divide overflow");
reportln("Divide overflow");
TODO();
}
@ -1566,13 +1566,13 @@ void SoftCPU::IDIV_RM32(const X86::Instruction& insn)
auto divisor_with_shadow = insn.modrm().read32(*this, insn);
auto divisor = (i32)divisor_with_shadow.value();
if (divisor == 0) {
warnln("Divide by zero");
reportln("Divide by zero");
TODO();
}
i64 dividend = (i64)(((u64)edx().value() << 32) | (u64)eax().value());
i64 result = dividend / divisor;
if (result > NumericLimits<i32>::max() || result < NumericLimits<i32>::min()) {
warnln("Divide overflow");
reportln("Divide overflow");
TODO();
}
@ -1586,13 +1586,13 @@ void SoftCPU::IDIV_RM8(const X86::Instruction& insn)
auto divisor_with_shadow = insn.modrm().read8(*this, insn);
auto divisor = (i8)divisor_with_shadow.value();
if (divisor == 0) {
warnln("Divide by zero");
reportln("Divide by zero");
TODO();
}
i16 dividend = ax().value();
i16 result = dividend / divisor;
if (result > NumericLimits<i8>::max() || result < NumericLimits<i8>::min()) {
warnln("Divide overflow");
reportln("Divide overflow");
TODO();
}