| 1 | /* $Id: stackframe.h,v 1.1 1999-05-24 20:19:19 ktk Exp $ */
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| 2 |
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| 3 | /*
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| 4 | * 16-bit and 32-bit mode stack frame layout
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| 5 | *
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| 6 | * Copyright 1995, 1998 Alexandre Julliard
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| 7 | */
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| 8 |
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| 9 | #ifndef __WINE_STACKFRAME_H
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| 10 | #define __WINE_STACKFRAME_H
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| 11 |
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| 12 | #include "ldt.h"
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| 13 | #include "thread.h"
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| 14 |
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| 15 | #include "pshpack1.h"
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| 16 |
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| 17 | /* 32-bit stack layout after CallTo16() */
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| 18 | typedef struct _STACK32FRAME
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| 19 | {
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| 20 | SEGPTR frame16; /* 00 16-bit frame from last CallFrom16() */
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| 21 | DWORD restore_addr; /* 04 return address for restoring code selector */
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| 22 | DWORD codeselector; /* 08 code selector to restore */
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| 23 | DWORD edi; /* 0c saved registers */
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| 24 | DWORD esi; /* 10 */
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| 25 | DWORD edx; /* 14 */
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| 26 | DWORD ecx; /* 18 */
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| 27 | DWORD ebx; /* 1c */
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| 28 | DWORD ebp; /* 20 saved 32-bit frame pointer */
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| 29 | DWORD retaddr; /* 24 actual return address */
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| 30 | DWORD args[1]; /* 28 arguments to 16-bit function */
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| 31 | } STACK32FRAME;
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| 32 |
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| 33 | /* 16-bit stack layout after CallFrom16() */
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| 34 | typedef struct
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| 35 | {
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| 36 | STACK32FRAME *frame32; /* 00 32-bit frame from last CallTo16() */
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| 37 | DWORD ebp; /* 04 full 32-bit content of ebp */
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| 38 | WORD mutex_count; /* 08 Win16Mutex recursion count */
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| 39 | WORD fs; /* 0a fs */
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| 40 | WORD entry_ip; /* 0c ip of entry point */
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| 41 | WORD ds; /* 0e ds */
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| 42 | WORD entry_cs; /* 10 cs of entry point */
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| 43 | WORD es; /* 12 es */
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| 44 | DWORD entry_point; /* 14 32-bit entry point to call */
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| 45 | WORD bp; /* 18 16-bit bp */
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| 46 | WORD ip; /* 1a return address */
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| 47 | WORD cs; /* 1c */
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| 48 | } STACK16FRAME;
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| 49 |
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| 50 | #include "poppack.h"
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| 51 |
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| 52 | #define THREAD_STACK16(thdb) ((STACK16FRAME*)PTR_SEG_TO_LIN((thdb)->cur_stack))
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| 53 | #define CURRENT_STACK16 (THREAD_STACK16(THREAD_Current()))
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| 54 | #define CURRENT_DS (CURRENT_STACK16->ds)
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| 55 |
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| 56 | /* varargs lists on the 16-bit stack */
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| 57 |
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| 58 | typedef void *VA_LIST16;
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| 59 |
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| 60 | #define __VA_ROUNDED16(type) \
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| 61 | ((sizeof(type) + sizeof(WORD) - 1) / sizeof(WORD) * sizeof(WORD))
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| 62 | #define VA_START16(list) ((list) = (VA_LIST16)(CURRENT_STACK16 + 1))
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| 63 | #define VA_ARG16(list,type) \
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| 64 | (((list) = (VA_LIST16)((char *)(list) + __VA_ROUNDED16(type))), \
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| 65 | *((type *)(void *)((char *)(list) - __VA_ROUNDED16(type))))
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| 66 | #define VA_END16(list) ((void)0)
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| 67 |
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| 68 | /* Push bytes on the 16-bit stack of a thread;
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| 69 | * return a segptr to the first pushed byte
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| 70 | */
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| 71 | #define STACK16_PUSH(thdb,size) \
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| 72 | (memmove((char*)THREAD_STACK16(thdb)-(size),THREAD_STACK16(thdb), \
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| 73 | sizeof(STACK16FRAME)), \
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| 74 | (thdb)->cur_stack -= (size), \
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| 75 | (SEGPTR)((thdb)->cur_stack + sizeof(STACK16FRAME)))
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| 76 |
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| 77 | /* Pop bytes from the 16-bit stack of a thread */
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| 78 | #define STACK16_POP(thdb,size) \
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| 79 | (memmove((char*)THREAD_STACK16(thdb)+(size),THREAD_STACK16(thdb), \
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| 80 | sizeof(STACK16FRAME)), \
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| 81 | (thdb)->cur_stack += (size))
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| 82 |
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| 83 | /* Push a DWORD on the 32-bit stack */
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| 84 | #define STACK32_PUSH(context,val) (*--((DWORD *)ESP_reg(context)) = (val))
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| 85 |
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| 86 | /* Pop a DWORD from the 32-bit stack */
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| 87 | #define STACK32_POP(context) (*((DWORD *)ESP_reg(context))++)
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| 88 |
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| 89 | /* Win32 register functions */
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| 90 | #define REGS_ENTRYPOINT(name) void WINAPI __regs_##name( CONTEXT *context )
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| 91 |
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| 92 | #endif /* __WINE_STACKFRAME_H */
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