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CPU/Recompiler: Set up frame pointer on Windows ARM64

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Required by the ABI. Not tested yet.
This commit is contained in:
Stenzek
2025-11-02 16:18:48 +10:00
parent 042bc7945c
commit 5ca35363d4
1 changed files with 14 additions and 1 deletions
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15
src/core/cpu_recompiler_arm64.cpp
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@@ -457,6 +457,12 @@ u32 CPU::CodeCache::EmitASMFunctions(void* code, u32 code_size)
g_enter_recompiler = armAsm->GetCursorAddress<decltype(g_enter_recompiler)>();
{
#ifdef _WIN32
// Frame pointer setup is needed on Windows
armAsm->stp(x29, x30, MemOperand(sp, -16, PreIndex));
armAsm->mov(x29, sp);
#endif
// Need the CPU state for basically everything :-)
armMoveAddressToReg(armAsm, RSTATE, &g_state);
@@ -571,13 +577,20 @@ void CPU::ARM64Recompiler::Reset(CodeCache::Block* block, u8* code_buffer, u32 c
// Need to wipe it out so it's correct when toggling fastmem.
m_host_regs = {};
// Frame pointer must be valid on Windows.
#ifdef _WIN32
constexpr u32 max_reg_idx = 28;
#else
constexpr u32 max_reg_idx = 29;
#endif
const u32 membase_idx = CodeCache::IsUsingFastmem() ? RMEMBASE.GetCode() : NUM_HOST_REGS;
for (u32 i = 0; i < NUM_HOST_REGS; i++)
{
HostRegAlloc& ra = m_host_regs[i];
if (i == RWARG1.GetCode() || i == RWARG1.GetCode() || i == RWARG2.GetCode() || i == RWARG3.GetCode() ||
i == RWSCRATCH.GetCode() || i == RSTATE.GetCode() || i == membase_idx || i == x18.GetCode() || i >= 30)
i == RWSCRATCH.GetCode() || i == RSTATE.GetCode() || i == membase_idx || i == x18.GetCode() || i > max_reg_idx)
{
continue;
}