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[RPCRT4] Fix x64 assembly code

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movaps is a 128 bit aligned move, we need a 64 bit unaligned move, so use movsd.
Fixes a crash in oleaut32_winetest tmarshal.
Also add a comment about the use of movd instead of movq.
This commit is contained in:
Timo Kreuzer 2023-09-10 14:35:20 +03:00
parent ed9973f876
commit 88808bad8a
1 changed files with 11 additions and 3 deletions
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14
dll/win32/rpcrt4/msvc.S
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@ -62,9 +62,9 @@ FUNC call_stubless_func
add rdx, [rcx + 8] /* info->ProcFormatString + offset */
mov rcx, [rcx] /* info->pStubDesc */
movaps [rsp + 20h], xmm1
movaps [rsp + 28h], xmm2
movaps [rsp + 30h], xmm3
movsd qword ptr [rsp + 20h], xmm1
movsd qword ptr [rsp + 28h], xmm2
movsd qword ptr [rsp + 30h], xmm3
lea r9, [rsp + 18h] /* fpu_args */
call ndr_client_call
add rsp, 38h
@ -97,6 +97,14 @@ FUNC call_server_func
mov rdx, [rsp + 8]
mov r8, [rsp + 16]
mov r9, [rsp + 24]
/* Usually the 64 bit SSE2 version of movd is called movq, as in GCC code
(see https://www.felixcloutier.com/x86/movd:movq). But there is another
movq with different encoding, which does not accept an integer register
as source (see https://www.felixcloutier.com/x86/movq). Older versions
of ML64 get confused and do not accept movq with integer registers,
but they translate movd to 64 bit, when 64 bit registers are used as
source, so we use that here. */
movd xmm0, rcx
movd xmm1, rdx
movd xmm2, r8