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ShaderJIT: add 16 dummy bytes at the bottom of the stack

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This commit is contained in:
wwylele 2017-02-03 14:22:43 +02:00
parent d0bf7df5ba
commit 6dc1d6e568
1 changed files with 5 additions and 2 deletions
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7
src/video_core/shader/shader_jit_x64_compiler.cpp
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@ -589,7 +589,7 @@ void JitShader::Compile_RSQ(Instruction instr) {
void JitShader::Compile_NOP(Instruction instr) {} void JitShader::Compile_NOP(Instruction instr) {}
void JitShader::Compile_END(Instruction instr) { void JitShader::Compile_END(Instruction instr) {
ABI_PopRegistersAndAdjustStack(*this, ABI_ALL_CALLEE_SAVED, 8); ABI_PopRegistersAndAdjustStack(*this, ABI_ALL_CALLEE_SAVED, 8, 16);
ret(); ret();
} }
@ -841,7 +841,10 @@ void JitShader::Compile(const std::array<u32, 1024>* program_code_,
FindReturnOffsets(); FindReturnOffsets();
// The stack pointer is 8 modulo 16 at the entry of a procedure // The stack pointer is 8 modulo 16 at the entry of a procedure
ABI_PushRegistersAndAdjustStack(*this, ABI_ALL_CALLEE_SAVED, 8); // We reserve 16 bytes and assign a dummy value to the first 8 bytes, to catch any potential
// return checks (see Compile_Return) that happen in shader main routine.
ABI_PushRegistersAndAdjustStack(*this, ABI_ALL_CALLEE_SAVED, 8, 16);
mov(qword[rsp + 8], 0xFFFFFFFFFFFFFFFFULL);
mov(SETUP, ABI_PARAM1); mov(SETUP, ABI_PARAM1);
mov(STATE, ABI_PARAM2); mov(STATE, ABI_PARAM2);