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CPU/CodeCache: Dynamically compute BIOS memory access timing

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The timings can change if the game does so. Instead of forcing the
blocks to recompile, we can just manually multiply size * word_time.

Improves stability of Nightmare Creatures booting, and fixes corrupted
text in Formula Circus when using the cached interpreter.
This commit is contained in:
Stenzek
2024-07-19 19:31:33 +10:00
parent 5f36c2948f
commit 2e96931c32
18 changed files with 294 additions and 65 deletions
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23
src/core/cpu_newrec_compiler_aarch32.cpp
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@ -28,6 +28,7 @@ using namespace vixl::aarch32;
using CPU::Recompiler::armEmitCall;
using CPU::Recompiler::armEmitCondBranch;
using CPU::Recompiler::armEmitFarLoad;
using CPU::Recompiler::armEmitJmp;
using CPU::Recompiler::armEmitMov;
using CPU::Recompiler::armGetJumpTrampoline;
@ -302,13 +303,25 @@ bool foo(const void* a, const void* b)
void CPU::NewRec::AArch32Compiler::GenerateICacheCheckAndUpdate()
{
if (GetSegmentForAddress(m_block->pc) >= Segment::KSEG1)
if (!m_block->HasFlag(CodeCache::BlockFlags::IsUsingICache))
{
armAsm->ldr(RARG1, PTR(&g_state.pending_ticks));
armAsm->add(RARG1, RARG1, armCheckAddSubConstant(static_cast<u32>(m_block->uncached_fetch_ticks)));
armAsm->str(RARG1, PTR(&g_state.pending_ticks));
if (m_block->HasFlag(CodeCache::BlockFlags::NeedsDynamicFetchTicks))
{
armEmitFarLoad(armAsm, RARG2, GetFetchMemoryAccessTimePtr());
armAsm->ldr(RARG1, PTR(&g_state.pending_ticks));
armEmitMov(armAsm, RARG3, m_block->size);
armAsm->mul(RARG2, RARG2, RARG3);
armAsm->add(RARG1, RARG1, RARG2);
armAsm->str(RARG1, PTR(&g_state.pending_ticks));
}
else
{
armAsm->ldr(RARG1, PTR(&g_state.pending_ticks));
armAsm->add(RARG1, RARG1, armCheckAddSubConstant(static_cast<u32>(m_block->uncached_fetch_ticks)));
armAsm->str(RARG1, PTR(&g_state.pending_ticks));
}
}
else
else if (m_block->icache_line_count > 0)
{
const auto& ticks_reg = RARG1;
const auto& current_tag_reg = RARG2;