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Code Issues Releases Wiki Activity

Detect conditional jumps.

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This commit is contained in:
Bartosz Taudul 2020-05-01 20:09:21 +02:00
parent 4390aa1015
commit 654dc2b901
2 changed files with 15 additions and 1 deletions
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15
server/TracySourceView.cpp
View File

@ -385,6 +385,17 @@ void SourceView::ParseSource( const char* fileName, const Worker* worker, const
} }
} }
static bool IsJumpConditionalX86( const char* op )
{
static constexpr const char* branchX86[] = {
"je", "jne", "jg", "jge", "ja", "jae", "jl", "jle", "jb", "jbe", "jo", "jno", "jz", "jnz", "js", "jns", "jcxz", "jecxz", "jrcxz", "loop", "loope",
"loopne", "loopnz", "loopz", "jnle", "jnl", "jnge", "jng", "jnbe", "jnb", "jnae", "jna", "jc", "jnc", "jp", "jpe", "jnp", "jpo", nullptr
};
auto ptr = branchX86;
while( *ptr ) if( strcmp( *ptr++, op ) == 0 ) return true;
return false;
}
bool SourceView::Disassemble( uint64_t symAddr, const Worker& worker ) bool SourceView::Disassemble( uint64_t symAddr, const Worker& worker )
{ {
m_asm.clear(); m_asm.clear();
@ -433,6 +444,7 @@ bool SourceView::Disassemble( uint64_t symAddr, const Worker& worker )
const auto& op = insn[i]; const auto& op = insn[i];
const auto& detail = *op.detail; const auto& detail = *op.detail;
bool hasJump = false; bool hasJump = false;
bool jumpConditional = false;
for( auto j=0; j<detail.groups_count; j++ ) for( auto j=0; j<detail.groups_count; j++ )
{ {
if( detail.groups[j] == CS_GRP_JUMP || detail.groups[j] == CS_GRP_CALL || detail.groups[j] == CS_GRP_RET ) if( detail.groups[j] == CS_GRP_JUMP || detail.groups[j] == CS_GRP_CALL || detail.groups[j] == CS_GRP_RET )
@ -452,6 +464,7 @@ bool SourceView::Disassemble( uint64_t symAddr, const Worker& worker )
{ {
jumpAddr = (uint64_t)detail.x86.operands[0].imm; jumpAddr = (uint64_t)detail.x86.operands[0].imm;
} }
jumpConditional = IsJumpConditionalX86( op.mnemonic );
break; break;
case CpuArchArm32: case CpuArchArm32:
if( detail.arm.op_count == 1 && detail.arm.operands[0].type == ARM_OP_IMM ) if( detail.arm.op_count == 1 && detail.arm.operands[0].type == ARM_OP_IMM )
@ -605,7 +618,7 @@ bool SourceView::Disassemble( uint64_t symAddr, const Worker& worker )
} }
} }
} }
m_asm.emplace_back( AsmLine { op.address, jumpAddr, op.mnemonic, op.op_str, (uint8_t)op.size, leaData, std::move( params ) } ); m_asm.emplace_back( AsmLine { op.address, jumpAddr, op.mnemonic, op.op_str, (uint8_t)op.size, leaData, jumpConditional, std::move( params ) } );
auto& entry = m_asm.back(); auto& entry = m_asm.back();
cs_regs read, write; cs_regs read, write;

1
server/TracySourceView.hpp
View File

@ -94,6 +94,7 @@ private:
std::string operands; std::string operands;
uint8_t len; uint8_t len;
LeaData leaData; LeaData leaData;
bool jumpConditional;
std::vector<AsmOpParams> params; std::vector<AsmOpParams> params;
union union
{ {