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vrclient: Fix x64 thunks for C API.

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* Clean up the stack properly.
* Do not push parameters after shadow register space.
This commit is contained in:
Józef Kucia 2018-07-26 17:02:25 +02:00 • committed by Andrew Eikum
parent 5c4e0ab079
commit 23ffdc5ec8
20 changed files with 2438 additions and 2382 deletions
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24
vrclient_x64/flatapi.h
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@ -1,6 +1,5 @@
/* asm thunks for the flat (FnTable) API */
extern void call_flat_method(void);
#ifdef __i386__
#include "pshpack1.h"
struct thunk
@ -15,7 +14,9 @@ struct thunk
};
#include "poppack.h"
static inline void init_thunk( struct thunk *thunk, void *this, void *proc )
extern void call_flat_method(void);
static inline void init_thunk( struct thunk *thunk, void *this, void *proc, int param_count )
{
thunk->mov_ecx = 0xb9;
thunk->this = this;
@ -48,12 +49,27 @@ static const struct thunk thunk_template =
{ 0xff, 0xe0 } /* jmp *%rax */
};
static inline void init_thunk( struct thunk *thunk, void *this, void *proc )
typedef void (*pfn_call_flat_method)(void);
extern void call_flat_method3(void);
extern void call_flat_method4(void);
extern void call_flat_method9(void);
static inline pfn_call_flat_method get_call_flat_method_pfn( int param_count )
{
if (param_count <= 3)
return call_flat_method3;
if (param_count <= 4)
return call_flat_method4;
return call_flat_method9;
}
static inline void init_thunk( struct thunk *thunk, void *this, void *proc, int param_count )
{
*thunk = thunk_template;
thunk->this = this;
thunk->proc = proc;
thunk->call_flat = call_flat_method;
thunk->call_flat = get_call_flat_method_pfn(param_count);
}
#endif