| /* |
| * Copyright 1993 Robert J. Amstadt |
| * Copyright 1995 Alexandre Julliard |
| */ |
| |
| #include <assert.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include "windows.h" |
| #include "winnt.h" |
| #include "global.h" |
| #include "heap.h" |
| #include "module.h" |
| #include "stackframe.h" |
| #include "task.h" |
| #include "debug.h" |
| |
| #if 0 |
| /* Make make_debug think these were really used */ |
| TRACE(relay, "test - dummy"); |
| #endif |
| |
| |
| /*********************************************************************** |
| * RELAY_Init |
| */ |
| BOOL32 RELAY_Init(void) |
| { |
| WORD codesel; |
| extern BOOL32 THUNK_Init(void); |
| |
| /* Allocate the code selector for CallTo16 routines */ |
| |
| extern void CALLTO16_Start(), CALLTO16_End(); |
| extern void CALLTO16_Ret_word(), CALLTO16_Ret_long(); |
| extern DWORD CALLTO16_RetAddr_word; |
| extern DWORD CALLTO16_RetAddr_long; |
| |
| codesel = GLOBAL_CreateBlock( GMEM_FIXED, (void *)CALLTO16_Start, |
| (int)CALLTO16_End - (int)CALLTO16_Start, |
| 0, TRUE, TRUE, FALSE, NULL ); |
| if (!codesel) return FALSE; |
| |
| /* Patch the return addresses for CallTo16 routines */ |
| |
| CALLTO16_RetAddr_word=MAKELONG( (int)CALLTO16_Ret_word-(int)CALLTO16_Start, |
| codesel ); |
| CALLTO16_RetAddr_long=MAKELONG( (int)CALLTO16_Ret_long-(int)CALLTO16_Start, |
| codesel ); |
| |
| /* Create built-in modules */ |
| if (!BUILTIN_Init()) return FALSE; |
| |
| /* Initialize thunking */ |
| return THUNK_Init(); |
| } |
| |
| |
| |
| static void RELAY_dumpstr( unsigned char *s ) |
| { |
| fputc( '\"', stdout ); |
| for ( ; *s; s++) |
| { |
| if (*s < ' ') printf( "\\0x%02x", *s ); |
| else if (*s == '\\') fputs( "\\\\", stdout ); |
| else fputc( *s, stdout ); |
| } |
| fputc( '\"', stdout ); |
| } |
| |
| |
| /*********************************************************************** |
| * RELAY_DebugCallFrom16 |
| */ |
| void RELAY_DebugCallFrom16( int func_type, char *args, |
| void *entry_point, CONTEXT *context ) |
| { |
| STACK16FRAME *frame; |
| WORD ordinal; |
| char *args16; |
| int i; |
| |
| if (!TRACE_ON(relay)) return; |
| |
| frame = CURRENT_STACK16; |
| printf( "Call %s(", BUILTIN_GetEntryPoint16( frame->entry_cs, |
| frame->entry_ip, |
| &ordinal )); |
| VA_START16( args16 ); |
| |
| if (func_type & 4) /* cdecl */ |
| { |
| while (*args) |
| { |
| switch(*args) |
| { |
| case 'w': |
| case 's': |
| printf( "0x%04x", *(WORD *)args16 ); |
| args16 += 2; |
| break; |
| case 'l': |
| printf( "0x%08x", *(int *)args16 ); |
| args16 += 4; |
| break; |
| case 't': |
| printf( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 ); |
| if (HIWORD(*(SEGPTR *)args16)) |
| RELAY_dumpstr( (LPBYTE)PTR_SEG_TO_LIN(*(SEGPTR *)args16 )); |
| args16 += 4; |
| break; |
| case 'p': |
| printf( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 ); |
| args16 += 4; |
| break; |
| case 'T': |
| printf( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 ); |
| if (HIWORD( *(SEGPTR *)args16 )) |
| RELAY_dumpstr( (LPBYTE)PTR_SEG_TO_LIN(*(SEGPTR *)args16 )); |
| args16 += 4; |
| break; |
| } |
| args++; |
| if (*args) printf( "," ); |
| } |
| } |
| else /* not cdecl */ |
| { |
| /* Start with the last arg */ |
| for (i = 0; args[i]; i++) |
| { |
| switch(args[i]) |
| { |
| case 'w': |
| case 's': |
| args16 += 2; |
| break; |
| case 'l': |
| case 'p': |
| case 't': |
| case 'T': |
| args16 += 4; |
| break; |
| } |
| } |
| |
| while (*args) |
| { |
| switch(*args) |
| { |
| case 'w': |
| case 's': |
| args16 -= 2; |
| printf( "0x%04x", *(WORD *)args16 ); |
| break; |
| case 'l': |
| args16 -= 4; |
| printf( "0x%08x", *(int *)args16 ); |
| break; |
| case 't': |
| args16 -= 4; |
| printf( "0x%08x", *(int *)args16 ); |
| if (HIWORD(*(SEGPTR *)args16)) |
| RELAY_dumpstr( (LPBYTE)PTR_SEG_TO_LIN(*(SEGPTR *)args16 )); |
| break; |
| case 'p': |
| args16 -= 4; |
| printf( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 ); |
| break; |
| case 'T': |
| args16 -= 4; |
| printf( "%04x:%04x", *(WORD *)(args16+2), *(WORD *)args16 ); |
| if (HIWORD( *(SEGPTR *)args16 )) |
| RELAY_dumpstr( (LPBYTE)PTR_SEG_TO_LIN(*(SEGPTR *)args16 )); |
| break; |
| } |
| args++; |
| if (*args) printf( "," ); |
| } |
| } |
| |
| printf( ") ret=%04x:%04x ds=%04x\n", frame->cs, frame->ip, frame->ds ); |
| VA_END16( args16 ); |
| |
| if (func_type & 2) /* register function */ |
| printf( " AX=%04x BX=%04x CX=%04x DX=%04x SI=%04x DI=%04x ES=%04x EFL=%08lx\n", |
| AX_reg(context), BX_reg(context), CX_reg(context), |
| DX_reg(context), SI_reg(context), DI_reg(context), |
| (WORD)ES_reg(context), EFL_reg(context) ); |
| } |
| |
| |
| /*********************************************************************** |
| * RELAY_DebugCallFrom16Ret |
| */ |
| void RELAY_DebugCallFrom16Ret( int func_type, int ret_val, CONTEXT *context) |
| { |
| STACK16FRAME *frame; |
| WORD ordinal; |
| |
| if (!TRACE_ON(relay)) return; |
| frame = CURRENT_STACK16; |
| printf( "Ret %s() ", BUILTIN_GetEntryPoint16( frame->entry_cs, |
| frame->entry_ip, |
| &ordinal )); |
| switch(func_type) |
| { |
| case 0: /* long */ |
| printf( "retval=0x%08x ret=%04x:%04x ds=%04x\n", |
| ret_val, frame->cs, frame->ip, frame->ds ); |
| break; |
| case 1: /* word */ |
| printf( "retval=0x%04x ret=%04x:%04x ds=%04x\n", |
| ret_val & 0xffff, frame->cs, frame->ip, frame->ds ); |
| break; |
| case 2: /* regs */ |
| printf( "retval=none ret=%04x:%04x ds=%04x\n", |
| (WORD)CS_reg(context), IP_reg(context), (WORD)DS_reg(context)); |
| printf( " AX=%04x BX=%04x CX=%04x DX=%04x SI=%04x DI=%04x ES=%04x EFL=%08lx\n", |
| AX_reg(context), BX_reg(context), CX_reg(context), |
| DX_reg(context), SI_reg(context), DI_reg(context), |
| (WORD)ES_reg(context), EFL_reg(context) ); |
| break; |
| } |
| } |
| |
| |
| /*********************************************************************** |
| * RELAY_Unimplemented16 |
| * |
| * This function is called for unimplemented 16-bit entry points (declared |
| * as 'stub' in the spec file). |
| */ |
| void RELAY_Unimplemented16(void) |
| { |
| WORD ordinal; |
| STACK16FRAME *frame = CURRENT_STACK16; |
| fprintf(stderr,"No handler for Win16 routine %s (called from %04x:%04x)\n", |
| BUILTIN_GetEntryPoint16(frame->entry_cs,frame->entry_ip,&ordinal), |
| frame->cs, frame->ip ); |
| TASK_KillCurrentTask(1); |
| } |
| |
| |
| /*********************************************************************** |
| * RELAY_DebugCallTo16 |
| * |
| * 'stack' points to the called function address on the 32-bit stack. |
| * Stack layout: |
| * ... ... |
| * (stack+8) arg2 |
| * (stack+4) arg1 |
| * (stack) func to call |
| */ |
| void RELAY_DebugCallTo16( int* stack, int nb_args ) |
| { |
| THDB *thdb; |
| |
| if (!TRACE_ON(relay)) return; |
| thdb = THREAD_Current(); |
| |
| if (nb_args == -1) /* Register function */ |
| { |
| CONTEXT *context = (CONTEXT *)stack[0]; |
| WORD *stack16 = (WORD *)THREAD_STACK16(thdb); |
| printf( "CallTo16(func=%04lx:%04x,ds=%04lx", |
| CS_reg(context), IP_reg(context), DS_reg(context) ); |
| nb_args = stack[1] / sizeof(WORD); |
| while (nb_args--) printf( ",0x%04x", *(--stack16) ); |
| printf( ") ss:sp=%04x:%04x\n", SELECTOROF(thdb->cur_stack), |
| OFFSETOF(thdb->cur_stack) ); |
| printf( " AX=%04x BX=%04x CX=%04x DX=%04x SI=%04x DI=%04x BP=%04x ES=%04x\n", |
| AX_reg(context), BX_reg(context), CX_reg(context), |
| DX_reg(context), SI_reg(context), DI_reg(context), |
| BP_reg(context), (WORD)ES_reg(context) ); |
| } |
| else |
| { |
| printf( "CallTo16(func=%04x:%04x,ds=%04x", |
| HIWORD(stack[0]), LOWORD(stack[0]), |
| SELECTOROF(thdb->cur_stack) ); |
| stack++; |
| while (nb_args--) printf( ",0x%04x", *stack++ ); |
| printf( ") ss:sp=%04x:%04x\n", SELECTOROF(thdb->cur_stack), |
| OFFSETOF(thdb->cur_stack) ); |
| } |
| } |
| |
| |
| /********************************************************************** |
| * Catch (KERNEL.55) |
| * |
| * Real prototype is: |
| * INT16 WINAPI Catch( LPCATCHBUF lpbuf ); |
| */ |
| void WINAPI Catch( CONTEXT *context ) |
| { |
| VA_LIST16 valist; |
| SEGPTR buf; |
| LPCATCHBUF lpbuf; |
| |
| VA_START16( valist ); |
| buf = VA_ARG16( valist, SEGPTR ); |
| lpbuf = (LPCATCHBUF)PTR_SEG_TO_LIN( buf ); |
| VA_END16( valist ); |
| |
| /* Note: we don't save the current ss, as the catch buffer is */ |
| /* only 9 words long. Hopefully no one will have the silly */ |
| /* idea to change the current stack before calling Throw()... */ |
| |
| /* Windows uses: |
| * lpbuf[0] = ip |
| * lpbuf[1] = cs |
| * lpbuf[2] = sp |
| * lpbuf[3] = bp |
| * lpbuf[4] = si |
| * lpbuf[5] = di |
| * lpbuf[6] = ds |
| * lpbuf[7] = unused |
| * lpbuf[8] = ss |
| */ |
| |
| lpbuf[0] = IP_reg(context); |
| lpbuf[1] = CS_reg(context); |
| /* Windows pushes 4 more words before saving sp */ |
| lpbuf[2] = SP_reg(context) - 4 * sizeof(WORD); |
| lpbuf[3] = BP_reg(context); |
| lpbuf[4] = SI_reg(context); |
| lpbuf[5] = DI_reg(context); |
| lpbuf[6] = DS_reg(context); |
| lpbuf[7] = 0; |
| lpbuf[8] = SS_reg(context); |
| AX_reg(context) = 0; /* Return 0 */ |
| } |
| |
| |
| /********************************************************************** |
| * Throw (KERNEL.56) |
| * |
| * Real prototype is: |
| * INT16 WINAPI Throw( LPCATCHBUF lpbuf, INT16 retval ); |
| */ |
| void WINAPI Throw( CONTEXT *context ) |
| { |
| VA_LIST16 valist; |
| SEGPTR buf; |
| LPCATCHBUF lpbuf; |
| STACK16FRAME *pFrame; |
| STACK32FRAME *frame32; |
| THDB *thdb = THREAD_Current(); |
| |
| VA_START16( valist ); |
| AX_reg(context) = VA_ARG16( valist, WORD ); /* retval */ |
| buf = VA_ARG16( valist, SEGPTR ); |
| lpbuf = (LPCATCHBUF)PTR_SEG_TO_LIN( buf ); |
| VA_END16( valist ); |
| |
| /* Find the frame32 corresponding to the frame16 we are jumping to */ |
| pFrame = THREAD_STACK16( thdb ); |
| frame32 = THREAD_STACK16( thdb )->frame32; |
| while (frame32 && frame32->frame16) |
| { |
| if (OFFSETOF(frame32->frame16) < OFFSETOF(thdb->cur_stack)) |
| break; /* Something strange is going on */ |
| if (OFFSETOF(frame32->frame16) > lpbuf[2]) |
| { |
| /* We found the right frame */ |
| pFrame->frame32 = frame32; |
| break; |
| } |
| frame32 = ((STACK16FRAME *)PTR_SEG_TO_LIN(frame32->frame16))->frame32; |
| } |
| |
| IP_reg(context) = lpbuf[0]; |
| CS_reg(context) = lpbuf[1]; |
| SP_reg(context) = lpbuf[2] + 4 * sizeof(WORD) + sizeof(WORD) /*extra arg*/; |
| BP_reg(context) = lpbuf[3]; |
| SI_reg(context) = lpbuf[4]; |
| DI_reg(context) = lpbuf[5]; |
| DS_reg(context) = lpbuf[6]; |
| |
| if (lpbuf[8] != SS_reg(context)) |
| fprintf( stderr, "Switching stack segment with Throw() not supported; expect crash now\n" ); |
| |
| if (TRACE_ON(relay)) /* Make sure we have a valid entry point address */ |
| { |
| static FARPROC16 entryPoint = NULL; |
| |
| if (!entryPoint) /* Get entry point for Throw() */ |
| entryPoint = MODULE_GetEntryPoint( GetModuleHandle16("KERNEL"), |
| 56 ); |
| pFrame->entry_cs = SELECTOROF(entryPoint); |
| pFrame->entry_ip = OFFSETOF(entryPoint); |
| } |
| } |
| |
| |
| /********************************************************************** |
| * RELAY_CallProc32W |
| * |
| * Helper for CallProc[Ex]32W |
| */ |
| static DWORD RELAY_CallProc32W(int Ex) |
| { |
| DWORD nrofargs, argconvmask; |
| FARPROC32 proc32; |
| DWORD *args, ret; |
| VA_LIST16 valist; |
| int i; |
| dbg_decl_str(relay, 1024); |
| |
| VA_START16( valist ); |
| nrofargs = VA_ARG16( valist, DWORD ); |
| argconvmask = VA_ARG16( valist, DWORD ); |
| proc32 = VA_ARG16( valist, FARPROC32 ); |
| dsprintf(relay, "CallProc32W(%ld,%ld,%p, Ex%d args[",nrofargs,argconvmask,proc32,Ex); |
| args = (DWORD*)HEAP_xalloc( GetProcessHeap(), 0, |
| sizeof(DWORD)*nrofargs ); |
| for (i=0;i<nrofargs;i++) { |
| if (argconvmask & (1<<i)) |
| { |
| SEGPTR ptr = VA_ARG16( valist, SEGPTR ); |
| args[nrofargs-i-1] = (DWORD)PTR_SEG_TO_LIN(ptr); |
| dsprintf(relay,"%08lx(%p),",ptr,PTR_SEG_TO_LIN(ptr)); |
| } |
| else |
| { |
| args[nrofargs-i-1] = VA_ARG16( valist, DWORD ); |
| dsprintf(relay,"%ld,",args[nrofargs-i-1]); |
| } |
| } |
| dsprintf(relay,"])"); |
| VA_END16( valist ); |
| |
| switch (nrofargs) { |
| case 0: ret = proc32(); |
| break; |
| case 1: ret = proc32(args[0]); |
| break; |
| case 2: ret = proc32(args[0],args[1]); |
| break; |
| case 3: ret = proc32(args[0],args[1],args[2]); |
| break; |
| case 4: ret = proc32(args[0],args[1],args[2],args[3]); |
| break; |
| case 5: ret = proc32(args[0],args[1],args[2],args[3],args[4]); |
| break; |
| case 6: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5]); |
| break; |
| case 7: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6]); |
| break; |
| case 8: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]); |
| break; |
| case 9: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8]); |
| break; |
| case 10: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],args[9]); |
| break; |
| case 11: ret = proc32(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7],args[8],args[9],args[10]); |
| break; |
| default: |
| /* FIXME: should go up to 32 arguments */ |
| fprintf(stderr,"CallProc32W: unsupported number of arguments %ld, please report.\n",nrofargs); |
| ret = 0; |
| break; |
| } |
| /* POP nrofargs DWORD arguments and 3 DWORD parameters */ |
| if (!Ex) STACK16_POP( THREAD_Current(), |
| (3 + nrofargs) * sizeof(DWORD) ); |
| |
| TRACE(relay,"%s - returns %08lx\n",dbg_str(relay),ret); |
| HeapFree( GetProcessHeap(), 0, args ); |
| return ret; |
| } |
| |
| |
| /********************************************************************** |
| * CallProc32W (KERNEL.517) |
| */ |
| DWORD WINAPI WIN16_CallProc32W() |
| { |
| return RELAY_CallProc32W(0); |
| } |
| |
| |
| /********************************************************************** |
| * CallProcEx32W() (KERNEL.518) |
| * |
| * C - style linkage to CallProc32W - caller pops stack. |
| */ |
| DWORD WINAPI WIN16_CallProcEx32W() |
| { |
| return RELAY_CallProc32W(TRUE); |
| } |
