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Merge branch 'timing'

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We do this to improve timing information before entering a supervior
function. We also do this to try and stay within JITted code as much
as possible, by updating the cycles we have remaining.
This commit is contained in:
MerryMage 2017-12-03 15:20:28 +00:00
commit 2a818f9d8e
10 changed files with 38 additions and 13 deletions
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8
src/backend_x64/block_of_code.cpp
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@ -76,13 +76,13 @@ size_t BlockOfCode::SpaceRemaining() const {
return std::min(TOTAL_CODE_SIZE - far_code_offset, FAR_CODE_OFFSET - near_code_offset);
}
size_t BlockOfCode::RunCode(JitState* jit_state, size_t cycles_to_run) const {
void BlockOfCode::RunCode(JitState* jit_state, size_t cycles_to_run) const {
constexpr size_t max_cycles_to_run = static_cast<size_t>(std::numeric_limits<decltype(jit_state->cycles_remaining)>::max());
ASSERT(cycles_to_run <= max_cycles_to_run);
jit_state->cycles_to_run = cycles_to_run;
jit_state->cycles_remaining = cycles_to_run;
run_code(jit_state);
return cycles_to_run - jit_state->cycles_remaining; // Return number of cycles actually run.
}
void BlockOfCode::ReturnFromRunCode(bool MXCSR_switch) {
@ -137,6 +137,10 @@ void BlockOfCode::GenRunCode() {
jg(loop);
}
mov(ABI_PARAM1, qword[r15 + offsetof(JitState, cycles_to_run)]);
sub(ABI_PARAM1, qword[r15 + offsetof(JitState, cycles_remaining)]);
CallFunction(cb.AddTicks);
ABI_PopCalleeSaveRegistersAndAdjustStack(this);
ret();
};