Sweden-Number/include/stackframe.h

114 lines
3.7 KiB
C

/*
* 16-bit and 32-bit mode stack frame layout
*
* Copyright 1995, 1998 Alexandre Julliard
*/
#ifndef __WINE_STACKFRAME_H
#define __WINE_STACKFRAME_H
#include <string.h>
#include "ldt.h"
#include "thread.h"
#include "pshpack1.h"
/* 32-bit stack layout after CallTo16() */
typedef struct _STACK32FRAME
{
SEGPTR frame16; /* 00 16-bit frame from last CallFrom16() */
DWORD restore_addr; /* 04 return address for restoring code selector */
DWORD codeselector; /* 08 code selector to restore */
DWORD edi; /* 0c saved registers */
DWORD esi; /* 10 */
DWORD edx; /* 14 */
DWORD ecx; /* 18 */
DWORD ebx; /* 1c */
DWORD ebp; /* 20 saved 32-bit frame pointer */
DWORD relay; /* 24 return address to relay stub */
DWORD retaddr; /* 28 actual return address */
DWORD args[1]; /* 2c arguments to 16-bit function */
} STACK32FRAME;
/* 16-bit stack layout after CallFrom16() */
typedef struct
{
STACK32FRAME *frame32; /* 00 32-bit frame from last CallTo16() */
DWORD edx; /* 04 saved registers */
DWORD ecx; /* 08 */
DWORD ebp; /* 0c */
WORD ds; /* 10 */
WORD es; /* 12 */
WORD fs; /* 14 */
WORD gs; /* 16 */
DWORD relay; /* 18 address of argument relay stub */
DWORD entry_ip; /* 1c ip of entry point */
DWORD entry_cs; /* 20 cs of entry point */
DWORD entry_point; /* 24 API entry point to call, reused as mutex count */
WORD bp; /* 28 16-bit stack frame chain */
WORD ip; /* 2a return address */
WORD cs; /* 2c */
} STACK16FRAME;
#include "poppack.h"
#define THREAD_STACK16(teb) ((STACK16FRAME*)PTR_SEG_TO_LIN((teb)->cur_stack))
#define CURRENT_STACK16 (THREAD_STACK16(NtCurrentTeb()))
#define CURRENT_DS (CURRENT_STACK16->ds)
/* varargs lists on the 16-bit stack */
typedef void *VA_LIST16;
#define __VA_ROUNDED16(type) \
((sizeof(type) + sizeof(WORD) - 1) / sizeof(WORD) * sizeof(WORD))
#define VA_START16(list) ((list) = (VA_LIST16)(CURRENT_STACK16 + 1))
#define VA_ARG16(list,type) \
(((list) = (VA_LIST16)((char *)(list) + __VA_ROUNDED16(type))), \
*((type *)(void *)((char *)(list) - __VA_ROUNDED16(type))))
#define VA_END16(list) ((void)0)
/* Push bytes on the 16-bit stack of a thread;
* return a segptr to the first pushed byte
*/
static inline SEGPTR WINE_UNUSED stack16_push( int size )
{
TEB *teb = NtCurrentTeb();
STACK16FRAME *frame = THREAD_STACK16(teb);
memmove( (char*)frame - size, frame, sizeof(*frame) );
teb->cur_stack -= size;
return (SEGPTR)(teb->cur_stack + sizeof(*frame));
}
/* Pop bytes from the 16-bit stack of a thread */
static inline void WINE_UNUSED stack16_pop( int size )
{
TEB *teb = NtCurrentTeb();
STACK16FRAME *frame = THREAD_STACK16(teb);
memmove( (char*)frame + size, frame, sizeof(*frame) );
teb->cur_stack += size;
}
#ifdef __i386__
/* Push a DWORD on the 32-bit stack */
static inline void WINE_UNUSED stack32_push( CONTEXT *context, DWORD val )
{
ESP_reg(context) -= sizeof(DWORD);
*(DWORD *)ESP_reg(context) = val;
}
/* Pop a DWORD from the 32-bit stack */
static inline DWORD WINE_UNUSED stack32_pop( CONTEXT *context )
{
DWORD ret = *(DWORD *)ESP_reg(context);
ESP_reg(context) += sizeof(DWORD);
return ret;
}
#endif /* __i386__ */
/* Win32 register functions */
#define REGS_FUNC(name) __regs_##name
#endif /* __WINE_STACKFRAME_H */