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rpcrt4: Implement stubless proxy entry thunks for x86_64.

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Alexandre Julliard 2011-06-15 12:49:24 +02:00
parent 915a0769e5
commit b02457a108
1 changed files with 47 additions and 0 deletions
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47
dlls/rpcrt4/cproxy.c
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@ -116,6 +116,53 @@ static inline void init_thunk( struct thunk *thunk, unsigned int index )
thunk->handler = (char *)call_stubless_func - (char *)(&thunk->handler + 1);
}
#elif defined(__x86_64__)
extern void call_stubless_func(void);
__ASM_GLOBAL_FUNC(call_stubless_func,
"movq %rcx,0x8(%rsp)\n\t"
"movq %rdx,0x10(%rsp)\n\t"
"movq %r8,0x18(%rsp)\n\t"
"movq %r9,0x20(%rsp)\n\t"
"leaq 0x8(%rsp),%r8\n\t" /* &This */
"movq (%rcx),%rcx\n\t" /* This->lpVtbl */
"movq -0x10(%rcx),%rcx\n\t" /* MIDL_STUBLESS_PROXY_INFO */
"movq 0x10(%rcx),%rdx\n\t" /* info->FormatStringOffset */
"movzwq (%rdx,%r10,2),%rdx\n\t" /* FormatStringOffset[index] */
"addq 8(%rcx),%rdx\n\t" /* info->ProcFormatString + offset */
"movq (%rcx),%rcx\n\t" /* info->pStubDesc */
"subq $0x28,%rsp\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset 0x28\n\t")
"call " __ASM_NAME("ndr_client_call") "\n\t"
"addq $0x28,%rsp\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset -0x28\n\t")
"ret" );
#include "pshpack1.h"
struct thunk
{
BYTE mov_r10[3];
DWORD index;
BYTE mov_rax[2];
void *call_stubless;
BYTE jmp_rax[2];
};
#include "poppack.h"
static const struct thunk thunk_template =
{
{ 0x49, 0xc7, 0xc2 }, 0, /* movq $index,%r10 */
{ 0x48, 0xb8 }, 0, /* movq $call_stubless_func,%rax */
{ 0xff, 0xe0 } /* jmp *%rax */
};
static inline void init_thunk( struct thunk *thunk, unsigned int index )
{
*thunk = thunk_template;
thunk->index = index;
thunk->call_stubless = call_stubless_func;
}
#else /* __i386__ */
#warning You must implement stubless proxies for your CPU