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Win32: Respect home space / shadow space on the stack frame (#17514)

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Previous code did not respect the 32-byte long area on the stack frame
called the home space - area on the stack frame area that is specific to
Microsoft's x64 calling convention, leading to corrupted values after a
callback.
Bug noticed by @capriots

Co-Authored-By: capriots <29807355+capriots@users.noreply.github.com>
This commit is contained in:
Elad 2025-09-19 11:46:39 +03:00 committed by GitHub
parent e995511c57
commit ffeb16fe1e
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
1 changed files with 22 additions and 22 deletions
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44
rpcs3/Emu/Cell/PPUThread.cpp
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@ -195,17 +195,17 @@ const auto ppu_gateway = build_function_asm<void(*)(ppu_thread*)>("ppu_gateway",
c.push(x86::rdi);
c.push(x86::rbp);
c.push(x86::rbx);
c.sub(x86::rsp, 0xa8);
c.movaps(x86::oword_ptr(x86::rsp, 0x90), x86::xmm15);
c.movaps(x86::oword_ptr(x86::rsp, 0x80), x86::xmm14);
c.movaps(x86::oword_ptr(x86::rsp, 0x70), x86::xmm13);
c.movaps(x86::oword_ptr(x86::rsp, 0x60), x86::xmm12);
c.movaps(x86::oword_ptr(x86::rsp, 0x50), x86::xmm11);
c.movaps(x86::oword_ptr(x86::rsp, 0x40), x86::xmm10);
c.movaps(x86::oword_ptr(x86::rsp, 0x30), x86::xmm9);
c.movaps(x86::oword_ptr(x86::rsp, 0x20), x86::xmm8);
c.movaps(x86::oword_ptr(x86::rsp, 0x10), x86::xmm7);
c.movaps(x86::oword_ptr(x86::rsp, 0), x86::xmm6);
c.sub(x86::rsp, 0xc8);
c.movaps(x86::oword_ptr(x86::rsp, 0xb0), x86::xmm15);
c.movaps(x86::oword_ptr(x86::rsp, 0xa0), x86::xmm14);
c.movaps(x86::oword_ptr(x86::rsp, 0x90), x86::xmm13);
c.movaps(x86::oword_ptr(x86::rsp, 0x80), x86::xmm12);
c.movaps(x86::oword_ptr(x86::rsp, 0x70), x86::xmm11);
c.movaps(x86::oword_ptr(x86::rsp, 0x60), x86::xmm10);
c.movaps(x86::oword_ptr(x86::rsp, 0x50), x86::xmm9);
c.movaps(x86::oword_ptr(x86::rsp, 0x40), x86::xmm8);
c.movaps(x86::oword_ptr(x86::rsp, 0x30), x86::xmm7);
c.movaps(x86::oword_ptr(x86::rsp, 0x20), x86::xmm6);
#else
c.push(x86::rbp);
c.push(x86::r15);
@ -252,17 +252,17 @@ const auto ppu_gateway = build_function_asm<void(*)(ppu_thread*)>("ppu_gateway",
}
#ifdef _WIN32
c.movaps(x86::xmm6, x86::oword_ptr(x86::rsp, 0));
c.movaps(x86::xmm7, x86::oword_ptr(x86::rsp, 0x10));
c.movaps(x86::xmm8, x86::oword_ptr(x86::rsp, 0x20));
c.movaps(x86::xmm9, x86::oword_ptr(x86::rsp, 0x30));
c.movaps(x86::xmm10, x86::oword_ptr(x86::rsp, 0x40));
c.movaps(x86::xmm11, x86::oword_ptr(x86::rsp, 0x50));
c.movaps(x86::xmm12, x86::oword_ptr(x86::rsp, 0x60));
c.movaps(x86::xmm13, x86::oword_ptr(x86::rsp, 0x70));
c.movaps(x86::xmm14, x86::oword_ptr(x86::rsp, 0x80));
c.movaps(x86::xmm15, x86::oword_ptr(x86::rsp, 0x90));
c.add(x86::rsp, 0xa8);
c.movaps(x86::xmm6, x86::oword_ptr(x86::rsp, 0x20));
c.movaps(x86::xmm7, x86::oword_ptr(x86::rsp, 0x30));
c.movaps(x86::xmm8, x86::oword_ptr(x86::rsp, 0x40));
c.movaps(x86::xmm9, x86::oword_ptr(x86::rsp, 0x50));
c.movaps(x86::xmm10, x86::oword_ptr(x86::rsp, 0x60));
c.movaps(x86::xmm11, x86::oword_ptr(x86::rsp, 0x70));
c.movaps(x86::xmm12, x86::oword_ptr(x86::rsp, 0x80));
c.movaps(x86::xmm13, x86::oword_ptr(x86::rsp, 0x90));
c.movaps(x86::xmm14, x86::oword_ptr(x86::rsp, 0xa0));
c.movaps(x86::xmm15, x86::oword_ptr(x86::rsp, 0xb0));
c.add(x86::rsp, 0xc8);
c.pop(x86::rbx);
c.pop(x86::rbp);
c.pop(x86::rdi);