Re: [PATCH v2 0/1] MR4720: Implement test_continue() for amd64

[Jinoh Kang (＠iamahuman)]

Jinoh Kang (@iamahuman) commented about dlls/ntdll/tests/exception.c:
> -
>    0x55,             /* push rbp */
> -
>    0x56,             /* push rsi */
> -
>    0x57,             /* push rdi */
> -
>    0x41, 0x54,       /* push r12 */
> -
>    0x41, 0x55,       /* push r13 */
> -
>    0x41, 0x56,       /* push r14 */
> -
>    0x41, 0x57,       /* push r15 */
> -
> -
>    0x48, 0x83, 0xec, 0x28, /* sub rsp, 8*5; stack space */
> -
>    0x48, 0x89, 0x24, 0x24, /* mov [rsp+8*0], rsp; for validation */
> -
> -
>    /* save args */
> -
>    0x48, 0x89, 0x4c, 0x24, 0x08, /* mov [rsp+8*1], rcx */
> -
>    0x48, 0x89, 0x54, 0x24, 0x10, /* mov [rsp+8*2], rdx */
> -
>    0x4c, 0x89, 0x44, 0x24, 0x18, /* mov [rsp+8*3], r8 */
> -
>    0x4c, 0x89, 0x4c, 0x24, 0x20, /* mov [rsp+8*4], r9 */

Save arguments in the parameter home area wherever possible, instead of allocating its space yourself.

See https://learn.microsoft.com/en-us/cpp/build/stack-usage?view=msvc-170#stack-... for how x86-64 MSVC ABI defines the stack layout.