| /* |
| * Copyright 1993 Robert J. Amstadt |
| * Copyright 1995 Martin von Loewis |
| * Copyright 1995, 1996, 1997 Alexandre Julliard |
| * Copyright 1997 Eric Youngdale |
| */ |
| |
| #include <assert.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <ctype.h> |
| #include <unistd.h> |
| |
| #include "windows.h" |
| #include "winnt.h" |
| #include "module.h" |
| #include "neexe.h" |
| #include "selectors.h" |
| #include "stackframe.h" |
| #include "thread.h" |
| |
| #ifdef NEED_UNDERSCORE_PREFIX |
| # define PREFIX "_" |
| #else |
| # define PREFIX |
| #endif |
| |
| #ifdef HAVE_ASM_STRING |
| # define STRING ".string" |
| #else |
| # define STRING ".ascii" |
| #endif |
| |
| #if defined(__GNUC__) && !defined(__svr4__) |
| # define USE_STABS |
| #else |
| # undef USE_STABS |
| #endif |
| |
| typedef enum |
| { |
| TYPE_INVALID, |
| TYPE_BYTE, /* byte variable (Win16) */ |
| TYPE_WORD, /* word variable (Win16) */ |
| TYPE_LONG, /* long variable (Win16) */ |
| TYPE_PASCAL_16, /* pascal function with 16-bit return (Win16) */ |
| TYPE_PASCAL, /* pascal function with 32-bit return (Win16) */ |
| TYPE_ABS, /* absolute value (Win16) */ |
| TYPE_RETURN, /* simple return value function (Win16) */ |
| TYPE_REGISTER, /* register function */ |
| TYPE_STUB, /* unimplemented stub */ |
| TYPE_STDCALL, /* stdcall function (Win32) */ |
| TYPE_CDECL, /* cdecl function (Win32) */ |
| TYPE_VARARGS, /* varargs function (Win32) */ |
| TYPE_EXTERN, /* external symbol (Win32) */ |
| TYPE_NBTYPES |
| } ORD_TYPE; |
| |
| static const char * const TypeNames[TYPE_NBTYPES] = |
| { |
| NULL, |
| "byte", /* TYPE_BYTE */ |
| "word", /* TYPE_WORD */ |
| "long", /* TYPE_LONG */ |
| "pascal16", /* TYPE_PASCAL_16 */ |
| "pascal", /* TYPE_PASCAL */ |
| "equate", /* TYPE_ABS */ |
| "return", /* TYPE_RETURN */ |
| "register", /* TYPE_REGISTER */ |
| "stub", /* TYPE_STUB */ |
| "stdcall", /* TYPE_STDCALL */ |
| "cdecl", /* TYPE_CDECL */ |
| "varargs", /* TYPE_VARARGS */ |
| "extern" /* TYPE_EXTERN */ |
| }; |
| |
| #define MAX_ORDINALS 2048 |
| |
| /* Callback function used for stub functions */ |
| #define STUB_CALLBACK \ |
| ((SpecType == SPEC_WIN16) ? "RELAY_Unimplemented16": "RELAY_Unimplemented32") |
| |
| typedef enum |
| { |
| SPEC_INVALID, |
| SPEC_WIN16, |
| SPEC_WIN32 |
| } SPEC_TYPE; |
| |
| typedef struct |
| { |
| int n_values; |
| int *values; |
| } ORD_VARIABLE; |
| |
| typedef struct |
| { |
| int n_args; |
| char arg_types[32]; |
| char link_name[80]; |
| } ORD_FUNCTION; |
| |
| typedef struct |
| { |
| int arg_size; |
| int ret_value; |
| } ORD_RETURN; |
| |
| typedef struct |
| { |
| int value; |
| } ORD_ABS; |
| |
| typedef struct |
| { |
| char link_name[80]; |
| } ORD_VARARGS; |
| |
| typedef struct |
| { |
| char link_name[80]; |
| } ORD_EXTERN; |
| |
| typedef struct |
| { |
| ORD_TYPE type; |
| int offset; |
| int lineno; |
| char name[80]; |
| union |
| { |
| ORD_VARIABLE var; |
| ORD_FUNCTION func; |
| ORD_RETURN ret; |
| ORD_ABS abs; |
| ORD_VARARGS vargs; |
| ORD_EXTERN ext; |
| } u; |
| } ORDDEF; |
| |
| static ORDDEF OrdinalDefinitions[MAX_ORDINALS]; |
| |
| static SPEC_TYPE SpecType = SPEC_INVALID; |
| static char DLLName[80]; |
| static char DLLFileName[80]; |
| static int Limit = 0; |
| static int Base = MAX_ORDINALS; |
| static int DLLHeapSize = 0; |
| static char *SpecName; |
| static FILE *SpecFp; |
| static WORD Code_Selector, Data_Selector; |
| |
| char *ParseBuffer = NULL; |
| char *ParseNext; |
| char ParseSaveChar; |
| int Line; |
| |
| static int debugging = 1; |
| |
| /* Offset of a structure field relative to the start of the struct */ |
| #define STRUCTOFFSET(type,field) ((int)&((type *)0)->field) |
| |
| /* Offset of register relative to the start of the CONTEXT struct */ |
| #define CONTEXTOFFSET(reg) STRUCTOFFSET(CONTEXT,reg) |
| |
| /* Offset of the stack pointer relative to %fs:(0) */ |
| #define STACKOFFSET (STRUCTOFFSET(THDB,cur_stack) - STRUCTOFFSET(THDB,teb)) |
| |
| /* Offset of the saved fs relative to %fs:(0) */ |
| #define FSOFFSET (STRUCTOFFSET(THDB,saved_fs) - STRUCTOFFSET(THDB,teb)) |
| |
| |
| static void *xmalloc (size_t size) |
| { |
| void *res; |
| |
| res = malloc (size ? size : 1); |
| if (res == NULL) |
| { |
| fprintf (stderr, "Virtual memory exhausted.\n"); |
| exit (1); |
| } |
| return res; |
| } |
| |
| |
| static void *xrealloc (void *ptr, size_t size) |
| { |
| void *res = realloc (ptr, size); |
| if (res == NULL) |
| { |
| fprintf (stderr, "Virtual memory exhausted.\n"); |
| exit (1); |
| } |
| return res; |
| } |
| |
| |
| static int IsNumberString(char *s) |
| { |
| while (*s != '\0') |
| if (!isdigit(*s++)) |
| return 0; |
| |
| return 1; |
| } |
| |
| static char *strupper(char *s) |
| { |
| char *p; |
| |
| for(p = s; *p != '\0'; p++) |
| *p = toupper(*p); |
| |
| return s; |
| } |
| |
| static char * GetTokenInLine(void) |
| { |
| char *p; |
| char *token; |
| |
| if (ParseNext != ParseBuffer) |
| { |
| if (ParseSaveChar == '\0') |
| return NULL; |
| *ParseNext = ParseSaveChar; |
| } |
| |
| /* |
| * Remove initial white space. |
| */ |
| for (p = ParseNext; isspace(*p); p++) |
| ; |
| |
| if ((*p == '\0') || (*p == '#')) |
| return NULL; |
| |
| /* |
| * Find end of token. |
| */ |
| token = p++; |
| if (*token != '(' && *token != ')') |
| while (*p != '\0' && *p != '(' && *p != ')' && !isspace(*p)) |
| p++; |
| |
| ParseSaveChar = *p; |
| ParseNext = p; |
| *p = '\0'; |
| |
| return token; |
| } |
| |
| static char * GetToken(void) |
| { |
| char *token; |
| |
| if (ParseBuffer == NULL) |
| { |
| ParseBuffer = xmalloc(512); |
| ParseNext = ParseBuffer; |
| while (1) |
| { |
| Line++; |
| if (fgets(ParseBuffer, 511, SpecFp) == NULL) |
| return NULL; |
| if (ParseBuffer[0] != '#') |
| break; |
| } |
| } |
| |
| while ((token = GetTokenInLine()) == NULL) |
| { |
| ParseNext = ParseBuffer; |
| while (1) |
| { |
| Line++; |
| if (fgets(ParseBuffer, 511, SpecFp) == NULL) |
| return NULL; |
| if (ParseBuffer[0] != '#') |
| break; |
| } |
| } |
| |
| return token; |
| } |
| |
| |
| /******************************************************************* |
| * ParseVariable |
| * |
| * Parse a variable definition. |
| */ |
| static int ParseVariable( ORDDEF *odp ) |
| { |
| char *endptr; |
| int *value_array; |
| int n_values; |
| int value_array_size; |
| |
| char *token = GetToken(); |
| if (*token != '(') |
| { |
| fprintf(stderr, "%s:%d: Expected '(' got '%s'\n", |
| SpecName, Line, token); |
| return -1; |
| } |
| |
| n_values = 0; |
| value_array_size = 25; |
| value_array = xmalloc(sizeof(*value_array) * value_array_size); |
| |
| while ((token = GetToken()) != NULL) |
| { |
| if (*token == ')') |
| break; |
| |
| value_array[n_values++] = strtol(token, &endptr, 0); |
| if (n_values == value_array_size) |
| { |
| value_array_size += 25; |
| value_array = xrealloc(value_array, |
| sizeof(*value_array) * value_array_size); |
| } |
| |
| if (endptr == NULL || *endptr != '\0') |
| { |
| fprintf(stderr, "%s:%d: Expected number value, got '%s'\n", |
| SpecName, Line, token); |
| return -1; |
| } |
| } |
| |
| if (token == NULL) |
| { |
| fprintf(stderr, "%s:%d: End of file in variable declaration\n", |
| SpecName, Line); |
| return -1; |
| } |
| |
| odp->u.var.n_values = n_values; |
| odp->u.var.values = xrealloc(value_array, sizeof(*value_array) * n_values); |
| |
| return 0; |
| } |
| |
| |
| /******************************************************************* |
| * ParseExportFunction |
| * |
| * Parse a function definition. |
| */ |
| static int ParseExportFunction( ORDDEF *odp ) |
| { |
| char *token; |
| int i; |
| |
| switch(SpecType) |
| { |
| case SPEC_WIN16: |
| if (odp->type == TYPE_STDCALL) |
| { |
| fprintf( stderr, "%s:%d: 'stdcall' not supported for Win16\n", |
| SpecName, Line ); |
| return -1; |
| } |
| break; |
| case SPEC_WIN32: |
| if ((odp->type == TYPE_PASCAL) || (odp->type == TYPE_PASCAL_16)) |
| { |
| fprintf( stderr, "%s:%d: 'pascal' not supported for Win32\n", |
| SpecName, Line ); |
| return -1; |
| } |
| break; |
| default: |
| break; |
| } |
| |
| token = GetToken(); |
| if (*token != '(') |
| { |
| fprintf(stderr, "%s:%d: Expected '(' got '%s'\n", |
| SpecName, Line, token); |
| return -1; |
| } |
| |
| for (i = 0; i < sizeof(odp->u.func.arg_types)-1; i++) |
| { |
| token = GetToken(); |
| if (*token == ')') |
| break; |
| |
| if (!strcmp(token, "word")) |
| odp->u.func.arg_types[i] = 'w'; |
| else if (!strcmp(token, "s_word")) |
| odp->u.func.arg_types[i] = 's'; |
| else if (!strcmp(token, "long") || !strcmp(token, "segptr")) |
| odp->u.func.arg_types[i] = 'l'; |
| else if (!strcmp(token, "ptr")) |
| odp->u.func.arg_types[i] = 'p'; |
| else if (!strcmp(token, "str")) |
| odp->u.func.arg_types[i] = 't'; |
| else if (!strcmp(token, "wstr")) |
| odp->u.func.arg_types[i] = 'W'; |
| else if (!strcmp(token, "segstr")) |
| odp->u.func.arg_types[i] = 'T'; |
| else if (!strcmp(token, "double")) |
| { |
| odp->u.func.arg_types[i++] = 'l'; |
| odp->u.func.arg_types[i] = 'l'; |
| } |
| else |
| { |
| fprintf(stderr, "%s:%d: Unknown variable type '%s'\n", |
| SpecName, Line, token); |
| return -1; |
| } |
| if (SpecType == SPEC_WIN32) |
| { |
| if (strcmp(token, "long") && |
| strcmp(token, "ptr") && |
| strcmp(token, "str") && |
| strcmp(token, "wstr") && |
| strcmp(token, "double")) |
| { |
| fprintf( stderr, "%s:%d: Type '%s' not supported for Win32\n", |
| SpecName, Line, token ); |
| return -1; |
| } |
| } |
| } |
| if ((*token != ')') || (i >= sizeof(odp->u.func.arg_types))) |
| { |
| fprintf( stderr, "%s:%d: Too many arguments\n", SpecName, Line ); |
| return -1; |
| } |
| odp->u.func.arg_types[i] = '\0'; |
| if ((odp->type == TYPE_STDCALL) && !i) |
| odp->type = TYPE_CDECL; /* stdcall is the same as cdecl for 0 args */ |
| if ((odp->type == TYPE_REGISTER) && (SpecType == SPEC_WIN32) && i) |
| { |
| fprintf( stderr, "%s:%d: register functions cannot have arguments in Win32\n", |
| SpecName, Line ); |
| return -1; |
| } |
| strcpy(odp->u.func.link_name, GetToken()); |
| return 0; |
| } |
| |
| |
| /******************************************************************* |
| * ParseEquate |
| * |
| * Parse an 'equate' definition. |
| */ |
| static int ParseEquate( ORDDEF *odp ) |
| { |
| char *endptr; |
| |
| char *token = GetToken(); |
| int value = strtol(token, &endptr, 0); |
| if (endptr == NULL || *endptr != '\0') |
| { |
| fprintf(stderr, "%s:%d: Expected number value, got '%s'\n", |
| SpecName, Line, token); |
| return -1; |
| } |
| |
| if (SpecType == SPEC_WIN32) |
| { |
| fprintf( stderr, "%s:%d: 'equate' not supported for Win32\n", |
| SpecName, Line ); |
| return -1; |
| } |
| |
| odp->u.abs.value = value; |
| return 0; |
| } |
| |
| |
| /******************************************************************* |
| * ParseReturn |
| * |
| * Parse a 'return' definition. |
| */ |
| static int ParseReturn( ORDDEF *odp ) |
| { |
| char *token; |
| char *endptr; |
| |
| token = GetToken(); |
| odp->u.ret.arg_size = strtol(token, &endptr, 0); |
| if (endptr == NULL || *endptr != '\0') |
| { |
| fprintf(stderr, "%s:%d: Expected number value, got '%s'\n", |
| SpecName, Line, token); |
| return -1; |
| } |
| |
| token = GetToken(); |
| odp->u.ret.ret_value = strtol(token, &endptr, 0); |
| if (endptr == NULL || *endptr != '\0') |
| { |
| fprintf(stderr, "%s:%d: Expected number value, got '%s'\n", |
| SpecName, Line, token); |
| return -1; |
| } |
| |
| if (SpecType == SPEC_WIN32) |
| { |
| fprintf( stderr, "%s:%d: 'return' not supported for Win32\n", |
| SpecName, Line ); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| |
| /******************************************************************* |
| * ParseStub |
| * |
| * Parse a 'stub' definition. |
| */ |
| static int ParseStub( ORDDEF *odp ) |
| { |
| odp->u.func.arg_types[0] = '\0'; |
| strcpy( odp->u.func.link_name, STUB_CALLBACK ); |
| return 0; |
| } |
| |
| |
| /******************************************************************* |
| * ParseVarargs |
| * |
| * Parse an 'varargs' definition. |
| */ |
| static int ParseVarargs( ORDDEF *odp ) |
| { |
| char *token; |
| |
| if (SpecType == SPEC_WIN16) |
| { |
| fprintf( stderr, "%s:%d: 'varargs' not supported for Win16\n", |
| SpecName, Line ); |
| return -1; |
| } |
| |
| token = GetToken(); |
| if (*token != '(') |
| { |
| fprintf(stderr, "%s:%d: Expected '(' got '%s'\n", |
| SpecName, Line, token); |
| return -1; |
| } |
| token = GetToken(); |
| if (*token != ')') |
| { |
| fprintf(stderr, "%s:%d: Expected ')' got '%s'\n", |
| SpecName, Line, token); |
| return -1; |
| } |
| |
| strcpy( odp->u.vargs.link_name, GetToken() ); |
| return 0; |
| } |
| |
| |
| /******************************************************************* |
| * ParseExtern |
| * |
| * Parse an 'extern' definition. |
| */ |
| static int ParseExtern( ORDDEF *odp ) |
| { |
| if (SpecType == SPEC_WIN16) |
| { |
| fprintf( stderr, "%s:%d: 'extern' not supported for Win16\n", |
| SpecName, Line ); |
| return -1; |
| } |
| strcpy( odp->u.ext.link_name, GetToken() ); |
| return 0; |
| } |
| |
| |
| /******************************************************************* |
| * ParseOrdinal |
| * |
| * Parse an ordinal definition. |
| */ |
| static int ParseOrdinal(int ordinal) |
| { |
| ORDDEF *odp; |
| char *token; |
| |
| if (ordinal >= MAX_ORDINALS) |
| { |
| fprintf(stderr, "%s:%d: Ordinal number too large\n", SpecName, Line ); |
| return -1; |
| } |
| if (ordinal > Limit) Limit = ordinal; |
| if (ordinal < Base) Base = ordinal; |
| |
| odp = &OrdinalDefinitions[ordinal]; |
| if (!(token = GetToken())) |
| { |
| fprintf(stderr, "%s:%d: Expected type after ordinal\n", SpecName, Line); |
| return -1; |
| } |
| |
| for (odp->type = 0; odp->type < TYPE_NBTYPES; odp->type++) |
| if (TypeNames[odp->type] && !strcmp( token, TypeNames[odp->type] )) |
| break; |
| |
| if (odp->type >= TYPE_NBTYPES) |
| { |
| fprintf( stderr, |
| "%s:%d: Expected type after ordinal, found '%s' instead\n", |
| SpecName, Line, token ); |
| return -1; |
| } |
| |
| if (!(token = GetToken())) |
| { |
| fprintf( stderr, "%s:%d: Expected name after type\n", SpecName, Line ); |
| return -1; |
| } |
| strcpy( odp->name, token ); |
| odp->lineno = Line; |
| |
| switch(odp->type) |
| { |
| case TYPE_BYTE: |
| case TYPE_WORD: |
| case TYPE_LONG: |
| return ParseVariable( odp ); |
| case TYPE_PASCAL_16: |
| case TYPE_PASCAL: |
| case TYPE_REGISTER: |
| case TYPE_STDCALL: |
| case TYPE_CDECL: |
| return ParseExportFunction( odp ); |
| case TYPE_ABS: |
| return ParseEquate( odp ); |
| case TYPE_RETURN: |
| return ParseReturn( odp ); |
| case TYPE_STUB: |
| return ParseStub( odp ); |
| case TYPE_VARARGS: |
| return ParseVarargs( odp ); |
| case TYPE_EXTERN: |
| return ParseExtern( odp ); |
| default: |
| fprintf( stderr, "Should not happen\n" ); |
| return -1; |
| } |
| } |
| |
| |
| /******************************************************************* |
| * ParseTopLevel |
| * |
| * Parse a spec file. |
| */ |
| static int ParseTopLevel(void) |
| { |
| char *token; |
| |
| while ((token = GetToken()) != NULL) |
| { |
| if (strcmp(token, "name") == 0) |
| { |
| strcpy(DLLName, GetToken()); |
| strupper(DLLName); |
| if (!DLLFileName[0]) sprintf( DLLFileName, "%s.DLL", DLLName ); |
| } |
| else if (strcmp(token, "file") == 0) |
| { |
| strcpy(DLLFileName, GetToken()); |
| strupper(DLLFileName); |
| } |
| else if (strcmp(token, "type") == 0) |
| { |
| token = GetToken(); |
| if (!strcmp(token, "win16" )) SpecType = SPEC_WIN16; |
| else if (!strcmp(token, "win32" )) SpecType = SPEC_WIN32; |
| else |
| { |
| fprintf(stderr, "%s:%d: Type must be 'win16' or 'win32'\n", |
| SpecName, Line); |
| return -1; |
| } |
| } |
| else if (strcmp(token, "heap") == 0) |
| { |
| token = GetToken(); |
| if (!IsNumberString(token)) |
| { |
| fprintf(stderr, "%s:%d: Expected number after heap\n", |
| SpecName, Line); |
| return -1; |
| } |
| DLLHeapSize = atoi(token); |
| } |
| else if (IsNumberString(token)) |
| { |
| int ordinal; |
| int rv; |
| |
| ordinal = atoi(token); |
| if ((rv = ParseOrdinal(ordinal)) < 0) |
| return rv; |
| } |
| else |
| { |
| fprintf(stderr, |
| "%s:%d: Expected name, id, length or ordinal\n", |
| SpecName, Line); |
| return -1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| |
| /******************************************************************* |
| * StoreVariableCode |
| * |
| * Store a list of ints into a byte array. |
| */ |
| static int StoreVariableCode( unsigned char *buffer, int size, ORDDEF *odp ) |
| { |
| int i; |
| |
| switch(size) |
| { |
| case 1: |
| for (i = 0; i < odp->u.var.n_values; i++) |
| buffer[i] = odp->u.var.values[i]; |
| break; |
| case 2: |
| for (i = 0; i < odp->u.var.n_values; i++) |
| ((unsigned short *)buffer)[i] = odp->u.var.values[i]; |
| break; |
| case 4: |
| for (i = 0; i < odp->u.var.n_values; i++) |
| ((unsigned int *)buffer)[i] = odp->u.var.values[i]; |
| break; |
| } |
| return odp->u.var.n_values * size; |
| } |
| |
| |
| /******************************************************************* |
| * DumpBytes |
| * |
| * Dump a byte stream into the assembly code. |
| */ |
| static void DumpBytes( FILE *outfile, const unsigned char *data, int len, |
| const char *section, const char *label_start ) |
| { |
| int i; |
| if (section) fprintf( outfile, "\t%s\n", section ); |
| if (label_start) fprintf( outfile, "%s:\n", label_start ); |
| for (i = 0; i < len; i++) |
| { |
| if (!(i & 0x0f)) fprintf( outfile, "\t.byte " ); |
| fprintf( outfile, "%d", *data++ ); |
| if (i < len - 1) |
| fprintf( outfile, "%c", ((i & 0x0f) != 0x0f) ? ',' : '\n' ); |
| } |
| fprintf( outfile, "\n" ); |
| } |
| |
| |
| /******************************************************************* |
| * BuildModule16 |
| * |
| * Build the in-memory representation of a 16-bit NE module, and dump it |
| * as a byte stream into the assembly code. |
| */ |
| static int BuildModule16( FILE *outfile, int max_code_offset, |
| int max_data_offset ) |
| { |
| ORDDEF *odp; |
| int i; |
| char *buffer; |
| NE_MODULE *pModule; |
| SEGTABLEENTRY *pSegment; |
| OFSTRUCT *pFileInfo; |
| BYTE *pstr, *bundle; |
| WORD *pword; |
| |
| /* Module layout: |
| * NE_MODULE Module |
| * OFSTRUCT File information |
| * SEGTABLEENTRY Segment 1 (code) |
| * SEGTABLEENTRY Segment 2 (data) |
| * WORD[2] Resource table (empty) |
| * BYTE[2] Imported names (empty) |
| * BYTE[n] Resident names table |
| * BYTE[n] Entry table |
| */ |
| |
| buffer = xmalloc( 0x10000 ); |
| |
| pModule = (NE_MODULE *)buffer; |
| pModule->magic = IMAGE_OS2_SIGNATURE; |
| pModule->count = 1; |
| pModule->next = 0; |
| pModule->flags = NE_FFLAGS_SINGLEDATA | NE_FFLAGS_BUILTIN | NE_FFLAGS_LIBMODULE; |
| pModule->dgroup = 2; |
| pModule->heap_size = DLLHeapSize; |
| pModule->stack_size = 0; |
| pModule->ip = 0; |
| pModule->cs = 0; |
| pModule->sp = 0; |
| pModule->ss = 0; |
| pModule->seg_count = 2; |
| pModule->modref_count = 0; |
| pModule->nrname_size = 0; |
| pModule->modref_table = 0; |
| pModule->nrname_fpos = 0; |
| pModule->moveable_entries = 0; |
| pModule->alignment = 0; |
| pModule->truetype = 0; |
| pModule->os_flags = NE_OSFLAGS_WINDOWS; |
| pModule->misc_flags = 0; |
| pModule->dlls_to_init = 0; |
| pModule->nrname_handle = 0; |
| pModule->min_swap_area = 0; |
| pModule->expected_version = 0x030a; |
| pModule->module32 = 0; |
| pModule->self = 0; |
| pModule->self_loading_sel = 0; |
| |
| /* File information */ |
| |
| pFileInfo = (OFSTRUCT *)(pModule + 1); |
| pModule->fileinfo = (int)pFileInfo - (int)pModule; |
| memset( pFileInfo, 0, sizeof(*pFileInfo) - sizeof(pFileInfo->szPathName) ); |
| pFileInfo->cBytes = sizeof(*pFileInfo) - sizeof(pFileInfo->szPathName) |
| + strlen(DLLFileName); |
| strcpy( pFileInfo->szPathName, DLLFileName ); |
| pstr = (char *)pFileInfo + pFileInfo->cBytes + 1; |
| |
| /* Segment table */ |
| |
| pSegment = (SEGTABLEENTRY *)pstr; |
| pModule->seg_table = (int)pSegment - (int)pModule; |
| pSegment->filepos = 0; |
| pSegment->size = max_code_offset; |
| pSegment->flags = 0; |
| pSegment->minsize = max_code_offset; |
| pSegment->selector = 0; |
| pSegment++; |
| |
| pModule->dgroup_entry = (int)pSegment - (int)pModule; |
| pSegment->filepos = 0; |
| pSegment->size = max_data_offset; |
| pSegment->flags = NE_SEGFLAGS_DATA; |
| pSegment->minsize = max_data_offset; |
| pSegment->selector = 0; |
| pSegment++; |
| |
| /* Resource table */ |
| |
| pword = (WORD *)pSegment; |
| pModule->res_table = (int)pword - (int)pModule; |
| *pword++ = 0; |
| *pword++ = 0; |
| |
| /* Imported names table */ |
| |
| pstr = (char *)pword; |
| pModule->import_table = (int)pstr - (int)pModule; |
| *pstr++ = 0; |
| *pstr++ = 0; |
| |
| /* Resident names table */ |
| |
| pModule->name_table = (int)pstr - (int)pModule; |
| /* First entry is module name */ |
| *pstr = strlen(DLLName ); |
| strcpy( pstr + 1, DLLName ); |
| pstr += *pstr + 1; |
| *(WORD *)pstr = 0; |
| pstr += sizeof(WORD); |
| /* Store all ordinals */ |
| odp = OrdinalDefinitions + 1; |
| for (i = 1; i <= Limit; i++, odp++) |
| { |
| if (!odp->name[0]) continue; |
| *pstr = strlen( odp->name ); |
| strcpy( pstr + 1, odp->name ); |
| strupper( pstr + 1 ); |
| pstr += *pstr + 1; |
| *(WORD *)pstr = i; |
| pstr += sizeof(WORD); |
| } |
| *pstr++ = 0; |
| |
| /* Entry table */ |
| |
| pModule->entry_table = (int)pstr - (int)pModule; |
| bundle = NULL; |
| odp = OrdinalDefinitions + 1; |
| for (i = 1; i <= Limit; i++, odp++) |
| { |
| int selector = 0; |
| |
| switch (odp->type) |
| { |
| case TYPE_CDECL: |
| case TYPE_PASCAL: |
| case TYPE_PASCAL_16: |
| case TYPE_REGISTER: |
| case TYPE_RETURN: |
| case TYPE_STUB: |
| selector = 1; /* Code selector */ |
| break; |
| |
| case TYPE_BYTE: |
| case TYPE_WORD: |
| case TYPE_LONG: |
| selector = 2; /* Data selector */ |
| break; |
| |
| case TYPE_ABS: |
| selector = 0xfe; /* Constant selector */ |
| break; |
| |
| default: |
| selector = 0; /* Invalid selector */ |
| break; |
| } |
| |
| /* create a new bundle if necessary */ |
| if (!bundle || (bundle[0] >= 254) || (bundle[1] != selector)) |
| { |
| bundle = pstr; |
| bundle[0] = 0; |
| bundle[1] = selector; |
| pstr += 2; |
| } |
| |
| (*bundle)++; |
| if (selector != 0) |
| { |
| *pstr++ = 1; |
| *(WORD *)pstr = odp->offset; |
| pstr += sizeof(WORD); |
| } |
| } |
| *pstr++ = 0; |
| |
| /* Dump the module content */ |
| |
| DumpBytes( outfile, (char *)pModule, (int)pstr - (int)pModule, |
| ".data", "Module_Start" ); |
| return (int)pstr - (int)pModule; |
| } |
| |
| |
| /******************************************************************* |
| * BuildSpec32File |
| * |
| * Build a Win32 C file from a spec file. |
| */ |
| static int BuildSpec32File( char * specfile, FILE *outfile ) |
| { |
| ORDDEF *odp; |
| int i, nb_names; |
| |
| fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n\n", |
| specfile ); |
| fprintf( outfile, "#include \"builtin32.h\"\n\n" ); |
| |
| /* Output code for all stubs functions */ |
| |
| fprintf( outfile, "extern const BUILTIN32_DESCRIPTOR %s_Descriptor;\n", |
| DLLName ); |
| for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++) |
| { |
| if (odp->type != TYPE_STUB) continue; |
| fprintf( outfile, "static void __stub_%d() { BUILTIN32_Unimplemented(&%s_Descriptor,%d); }\n", |
| i, DLLName, i ); |
| } |
| |
| /* Output code for all register functions */ |
| |
| fprintf( outfile, "#ifdef __i386__\n" ); |
| for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++) |
| { |
| if (odp->type != TYPE_REGISTER) continue; |
| fprintf( outfile, |
| "__asm__(\".align 4\\n\\t\"\n" |
| " \".globl " PREFIX "%s\\n\\t\"\n" |
| " \".type " PREFIX "%s,@function\\n\\t\"\n" |
| " \"" PREFIX "%s:\\n\\t\"\n" |
| " \"pushl $" PREFIX "__regs_%s\\n\\t\"\n" |
| " \"pushl $" PREFIX "CALL32_Regs\\n\\t\"\n" |
| " \"ret\");\n", |
| odp->u.func.link_name, odp->u.func.link_name, |
| odp->u.func.link_name, odp->u.func.link_name ); |
| } |
| fprintf( outfile, "#endif\n" ); |
| |
| /* Output the DLL functions prototypes */ |
| |
| for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++) |
| { |
| switch(odp->type) |
| { |
| case TYPE_VARARGS: |
| fprintf( outfile, "extern void %s();\n", odp->u.vargs.link_name ); |
| break; |
| case TYPE_EXTERN: |
| fprintf( outfile, "extern void %s();\n", odp->u.ext.link_name ); |
| break; |
| case TYPE_REGISTER: |
| case TYPE_STDCALL: |
| case TYPE_CDECL: |
| fprintf( outfile, "extern void %s();\n", odp->u.func.link_name ); |
| break; |
| case TYPE_INVALID: |
| case TYPE_STUB: |
| break; |
| default: |
| fprintf(stderr,"build: function type %d not available for Win32\n", |
| odp->type); |
| return -1; |
| } |
| } |
| |
| /* Output the DLL functions table */ |
| |
| fprintf( outfile, "\nstatic const ENTRYPOINT32 Functions[%d] =\n{\n", |
| Limit - Base + 1 ); |
| for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++) |
| { |
| switch(odp->type) |
| { |
| case TYPE_INVALID: |
| fprintf( outfile, " 0" ); |
| break; |
| case TYPE_VARARGS: |
| fprintf( outfile, " %s", odp->u.vargs.link_name ); |
| break; |
| case TYPE_EXTERN: |
| fprintf( outfile, " %s", odp->u.ext.link_name ); |
| break; |
| case TYPE_REGISTER: |
| case TYPE_STDCALL: |
| case TYPE_CDECL: |
| fprintf( outfile, " %s", odp->u.func.link_name); |
| break; |
| case TYPE_STUB: |
| fprintf( outfile, " __stub_%d", i ); |
| break; |
| default: |
| return -1; |
| } |
| if (i < Limit) fprintf( outfile, ",\n" ); |
| } |
| fprintf( outfile, "\n};\n\n" ); |
| |
| /* Output the DLL names table */ |
| |
| nb_names = 0; |
| fprintf( outfile, "static const char * const FuncNames[] =\n{\n" ); |
| for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++) |
| { |
| if (odp->type == TYPE_INVALID) continue; |
| if (nb_names++) fprintf( outfile, ",\n" ); |
| fprintf( outfile, " \"%s\"", odp->name ); |
| } |
| fprintf( outfile, "\n};\n\n" ); |
| |
| /* Output the DLL argument types */ |
| |
| fprintf( outfile, "static const unsigned int ArgTypes[%d] =\n{\n", |
| Limit - Base + 1 ); |
| for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++) |
| { |
| unsigned int j, mask = 0; |
| if ((odp->type == TYPE_STDCALL) || (odp->type == TYPE_CDECL)) |
| for (j = 0; odp->u.func.arg_types[j]; j++) |
| { |
| if (odp->u.func.arg_types[j] == 't') mask |= 1<< (j*2); |
| if (odp->u.func.arg_types[j] == 'W') mask |= 2<< (j*2); |
| } |
| fprintf( outfile, " %d", mask ); |
| if (i < Limit) fprintf( outfile, ",\n" ); |
| } |
| fprintf( outfile, "\n};\n\n" ); |
| |
| /* Output the DLL ordinals table */ |
| |
| fprintf( outfile, "static const unsigned short FuncOrdinals[] =\n{\n" ); |
| nb_names = 0; |
| for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++) |
| { |
| if (odp->type == TYPE_INVALID) continue; |
| if (nb_names++) fprintf( outfile, ",\n" ); |
| fprintf( outfile, " %d", i - Base ); |
| } |
| fprintf( outfile, "\n};\n\n" ); |
| |
| /* Output the DLL functions arguments */ |
| |
| fprintf( outfile, "static const unsigned char FuncArgs[%d] =\n{\n", |
| Limit - Base + 1 ); |
| for (i = Base, odp = OrdinalDefinitions + Base; i <= Limit; i++, odp++) |
| { |
| unsigned char args; |
| switch(odp->type) |
| { |
| case TYPE_STDCALL: |
| args = (unsigned char)strlen(odp->u.func.arg_types); |
| break; |
| case TYPE_CDECL: |
| args = 0x80 | (unsigned char)strlen(odp->u.func.arg_types); |
| break; |
| case TYPE_REGISTER: |
| args = 0xfe; |
| break; |
| default: |
| args = 0xff; |
| break; |
| } |
| fprintf( outfile, " 0x%02x", args ); |
| if (i < Limit) fprintf( outfile, ",\n" ); |
| } |
| fprintf( outfile, "\n};\n\n" ); |
| |
| /* Output the DLL descriptor */ |
| |
| fprintf( outfile, "const BUILTIN32_DESCRIPTOR %s_Descriptor =\n{\n", |
| DLLName ); |
| fprintf( outfile, " \"%s\",\n", DLLName ); |
| fprintf( outfile, " %d,\n", Base ); |
| fprintf( outfile, " %d,\n", Limit - Base + 1 ); |
| fprintf( outfile, " %d,\n", nb_names ); |
| fprintf( outfile, |
| " Functions,\n" |
| " FuncNames,\n" |
| " FuncOrdinals,\n" |
| " FuncArgs,\n" |
| " ArgTypes\n" |
| "};\n" ); |
| return 0; |
| } |
| |
| |
| /******************************************************************* |
| * BuildSpec16File |
| * |
| * Build a Win16 assembly file from a spec file. |
| */ |
| static int BuildSpec16File( char * specfile, FILE *outfile ) |
| { |
| ORDDEF *odp; |
| int i; |
| int code_offset, data_offset, module_size; |
| unsigned char *data; |
| |
| data = (unsigned char *)xmalloc( 0x10000 ); |
| memset( data, 0, 16 ); |
| data_offset = 16; |
| |
| fprintf( outfile, "/* File generated automatically; do not edit! */\n" ); |
| fprintf( outfile, "\t.text\n" ); |
| fprintf( outfile, "Code_Start:\n" ); |
| code_offset = 0; |
| |
| odp = OrdinalDefinitions; |
| for (i = 0; i <= Limit; i++, odp++) |
| { |
| switch (odp->type) |
| { |
| case TYPE_INVALID: |
| odp->offset = 0xffff; |
| break; |
| |
| case TYPE_ABS: |
| odp->offset = LOWORD(odp->u.abs.value); |
| break; |
| |
| case TYPE_BYTE: |
| odp->offset = data_offset; |
| data_offset += StoreVariableCode( data + data_offset, 1, odp); |
| break; |
| |
| case TYPE_WORD: |
| odp->offset = data_offset; |
| data_offset += StoreVariableCode( data + data_offset, 2, odp); |
| break; |
| |
| case TYPE_LONG: |
| odp->offset = data_offset; |
| data_offset += StoreVariableCode( data + data_offset, 4, odp); |
| break; |
| |
| case TYPE_RETURN: |
| fprintf( outfile,"/* %s.%d */\n", DLLName, i); |
| fprintf( outfile,"\tmovw $%d,%%ax\n",LOWORD(odp->u.ret.ret_value)); |
| fprintf( outfile,"\tmovw $%d,%%dx\n",HIWORD(odp->u.ret.ret_value)); |
| fprintf( outfile,"\t.byte 0x66\n"); |
| if (odp->u.ret.arg_size != 0) |
| fprintf( outfile, "\tlret $%d\n\n", odp->u.ret.arg_size); |
| else |
| { |
| fprintf( outfile, "\tlret\n"); |
| fprintf( outfile, "\tnop\n"); |
| fprintf( outfile, "\tnop\n\n"); |
| } |
| odp->offset = code_offset; |
| code_offset += 12; /* Assembly code is 12 bytes long */ |
| break; |
| |
| case TYPE_REGISTER: |
| case TYPE_CDECL: |
| case TYPE_PASCAL: |
| case TYPE_PASCAL_16: |
| case TYPE_STUB: |
| fprintf( outfile, "/* %s.%d */\n", DLLName, i); |
| fprintf( outfile, "\tpushw %%bp\n" ); |
| fprintf( outfile, "\tpushl $" PREFIX "%s\n",odp->u.func.link_name); |
| /* FreeBSD does not understand lcall, so do it the hard way */ |
| fprintf( outfile, "\t.byte 0x9a\n" ); |
| fprintf( outfile, "\t.long " PREFIX "CallFrom16_%s_%s_%s\n", |
| (odp->type == TYPE_CDECL) ? "c" : "p", |
| (odp->type == TYPE_REGISTER) ? "regs" : |
| (odp->type == TYPE_PASCAL_16) ? "word" : "long", |
| odp->u.func.arg_types ); |
| fprintf( outfile, "\t.long 0x%08lx\n", |
| MAKELONG( Code_Selector, 0x9090 /* nop ; nop */ ) ); |
| odp->offset = code_offset; |
| code_offset += 16; /* Assembly code is 16 bytes long */ |
| break; |
| |
| default: |
| fprintf(stderr,"build: function type %d not available for Win16\n", |
| odp->type); |
| return -1; |
| } |
| } |
| |
| if (!code_offset) /* Make sure the code segment is not empty */ |
| { |
| fprintf( outfile, "\t.byte 0\n" ); |
| code_offset++; |
| } |
| |
| /* Output data segment */ |
| |
| DumpBytes( outfile, data, data_offset, NULL, "Data_Start" ); |
| |
| /* Build the module */ |
| |
| module_size = BuildModule16( outfile, code_offset, data_offset ); |
| |
| /* Output the DLL descriptor */ |
| |
| fprintf( outfile, "\t.text\n" ); |
| fprintf( outfile, "DLLName:\t" STRING " \"%s\\0\"\n", DLLName ); |
| fprintf( outfile, "\t.align 4\n" ); |
| fprintf( outfile, "\t.globl " PREFIX "%s_Descriptor\n", DLLName ); |
| fprintf( outfile, PREFIX "%s_Descriptor:\n", DLLName ); |
| fprintf( outfile, "\t.long DLLName\n" ); /* Name */ |
| fprintf( outfile, "\t.long Module_Start\n" ); /* Module start */ |
| fprintf( outfile, "\t.long %d\n", module_size ); /* Module size */ |
| fprintf( outfile, "\t.long Code_Start\n" ); /* Code start */ |
| fprintf( outfile, "\t.long Data_Start\n" ); /* Data start */ |
| return 0; |
| } |
| |
| |
| /******************************************************************* |
| * BuildSpecFile |
| * |
| * Build an assembly file from a spec file. |
| */ |
| static int BuildSpecFile( FILE *outfile, char *specname ) |
| { |
| SpecName = specname; |
| SpecFp = fopen( specname, "r"); |
| if (SpecFp == NULL) |
| { |
| fprintf(stderr, "Could not open specification file, '%s'\n", specname); |
| return -1; |
| } |
| |
| if (ParseTopLevel() < 0) return -1; |
| |
| switch(SpecType) |
| { |
| case SPEC_WIN16: |
| return BuildSpec16File( specname, outfile ); |
| case SPEC_WIN32: |
| return BuildSpec32File( specname, outfile ); |
| default: |
| fprintf( stderr, "%s: Missing 'type' declaration\n", specname ); |
| return -1; |
| } |
| } |
| |
| |
| /******************************************************************* |
| * TransferArgs16To32 |
| * |
| * Get the arguments from the 16-bit stack and push them on the 32-bit stack. |
| * The 16-bit stack layout is: |
| * ... ... |
| * (bp+8) arg2 |
| * (bp+6) arg1 |
| * (bp+4) cs |
| * (bp+2) ip |
| * (bp) bp |
| * |
| * For 'cdecl' argn up to arg1 are reversed. |
| */ |
| static int TransferArgs16To32( FILE *outfile, char *args, int usecdecl ) |
| { |
| int i, pos16, pos32; |
| char *xargs; |
| |
| /* Copy the arguments */ |
| |
| pos16 = 6; /* skip bp and return address */ |
| pos32 = usecdecl ? -(strlen(args) * 4) : 0; |
| xargs = usecdecl ? args:args+strlen(args); |
| |
| for (i = strlen(args); i > 0; i--) |
| { |
| if (!usecdecl) { |
| pos32 -= 4; |
| xargs--; |
| } |
| switch(*xargs) |
| { |
| case 'w': /* word */ |
| fprintf( outfile, "\tmovzwl %d(%%ebp),%%eax\n", pos16 ); |
| fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", pos32 ); |
| pos16 += 2; |
| break; |
| |
| case 's': /* s_word */ |
| fprintf( outfile, "\tmovswl %d(%%ebp),%%eax\n", pos16 ); |
| fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", pos32 ); |
| pos16 += 2; |
| break; |
| |
| case 'l': /* long or segmented pointer */ |
| case 'T': /* segmented pointer to null-terminated string */ |
| fprintf( outfile, "\tmovl %d(%%ebp),%%eax\n", pos16 ); |
| fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", pos32 ); |
| pos16 += 4; |
| break; |
| |
| case 'p': /* linear pointer */ |
| case 't': /* linear pointer to null-terminated string */ |
| /* Get the selector */ |
| fprintf( outfile, "\tmovw %d(%%ebp),%%ax\n", pos16 + 2 ); |
| /* Get the selector base */ |
| fprintf( outfile, "\tandl $0xfff8,%%eax\n" ); |
| fprintf( outfile, "\tmovl " PREFIX "ldt_copy(%%eax),%%eax\n" ); |
| fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", pos32 ); |
| /* Add the offset */ |
| fprintf( outfile, "\tmovzwl %d(%%ebp),%%eax\n", pos16 ); |
| fprintf( outfile, "\taddl %%eax,%d(%%ebx)\n", pos32 ); |
| pos16 += 4; |
| break; |
| |
| default: |
| fprintf( stderr, "Unknown arg type '%c'\n", *xargs ); |
| } |
| if (usecdecl) { |
| pos32 += 4; |
| xargs++; |
| } |
| } |
| |
| return pos16 - 6; /* Return the size of the 16-bit args */ |
| } |
| |
| |
| /******************************************************************* |
| * BuildContext16 |
| * |
| * Build the context structure on the 32-bit stack. |
| */ |
| static void BuildContext16( FILE *outfile ) |
| { |
| /* Store the registers */ |
| |
| fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", |
| CONTEXTOFFSET(Eax) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tmovl %%ecx,%d(%%ebx)\n", |
| CONTEXTOFFSET(Ecx) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tmovl %%edx,%d(%%ebx)\n", |
| CONTEXTOFFSET(Edx) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tmovl %%esi,%d(%%ebx)\n", |
| CONTEXTOFFSET(Esi) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tmovl %%edi,%d(%%ebx)\n", |
| CONTEXTOFFSET(Edi) - sizeof(CONTEXT) ); |
| |
| fprintf( outfile, "\tmovl -20(%%ebp),%%eax\n" ); /* Get %ebx from stack*/ |
| fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", |
| CONTEXTOFFSET(Ebx) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tmovzwl -10(%%ebp),%%eax\n" ); /* Get %ds from stack*/ |
| fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", |
| CONTEXTOFFSET(SegDs) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tmovzwl -6(%%ebp),%%eax\n" ); /* Get %es from stack*/ |
| fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", |
| CONTEXTOFFSET(SegEs) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tpushfl\n" ); |
| fprintf( outfile, "\tpopl %d(%%ebx)\n", |
| CONTEXTOFFSET(EFlags) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tmovl -16(%%ebp),%%eax\n" ); /* Get %ebp from stack */ |
| fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", |
| CONTEXTOFFSET(Ebp) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tmovzwl 2(%%ebp),%%eax\n" ); /* Get %ip from stack */ |
| fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", |
| CONTEXTOFFSET(Eip) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tleal 2(%%ebp),%%eax\n" ); /* Get initial %sp */ |
| fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", |
| CONTEXTOFFSET(Esp) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tmovzwl 4(%%ebp),%%eax\n" ); /* Get %cs from stack */ |
| fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", |
| CONTEXTOFFSET(SegCs) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tmovw %%fs,%%ax\n" ); |
| fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", |
| CONTEXTOFFSET(SegFs) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tmovw %%gs,%%ax\n" ); |
| fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", |
| CONTEXTOFFSET(SegGs) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tmovw %%ss,%%ax\n" ); |
| fprintf( outfile, "\tmovl %%eax,%d(%%ebx)\n", |
| CONTEXTOFFSET(SegSs) - sizeof(CONTEXT) ); |
| #if 0 |
| fprintf( outfile, "\tfsave %d(%%ebx)\n", |
| CONTEXTOFFSET(FloatSave) - sizeof(CONTEXT) ); |
| #endif |
| } |
| |
| |
| /******************************************************************* |
| * RestoreContext16 |
| * |
| * Restore the registers from the context structure. |
| */ |
| static void RestoreContext16( FILE *outfile ) |
| { |
| /* Get the 32-bit stack pointer */ |
| |
| fprintf( outfile, "\tleal -%d(%%ebp),%%ebx\n", |
| STRUCTOFFSET(STACK32FRAME,ebp) ); |
| |
| /* Remove everything up to (including) the return address |
| * from the 16-bit stack */ |
| |
| fprintf( outfile, "\tmovl %d(%%ebx),%%eax\n", |
| CONTEXTOFFSET(SegSs) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tmovw %%ax,%%ss\n" ); |
| fprintf( outfile, "\tmovl %d(%%ebx),%%esp\n", |
| CONTEXTOFFSET(Esp) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\taddl $4,%%esp\n" ); /* Remove return address */ |
| |
| /* Restore the registers */ |
| |
| fprintf( outfile, "\tmovl %d(%%ebx),%%ecx\n", |
| CONTEXTOFFSET(Ecx) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tmovl %d(%%ebx),%%edx\n", |
| CONTEXTOFFSET(Edx) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tmovl %d(%%ebx),%%esi\n", |
| CONTEXTOFFSET(Esi) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tmovl %d(%%ebx),%%edi\n", |
| CONTEXTOFFSET(Edi) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tmovl %d(%%ebx),%%ebp\n", |
| CONTEXTOFFSET(Ebp) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tpushw %d(%%ebx)\n", /* Push new cs */ |
| CONTEXTOFFSET(SegCs) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tpushw %d(%%ebx)\n", /* Push new ip */ |
| CONTEXTOFFSET(Eip) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tpushl %d(%%ebx)\n", /* Push new ds */ |
| CONTEXTOFFSET(SegDs) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tpushl %d(%%ebx)\n", /* Push new es */ |
| CONTEXTOFFSET(SegEs) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tpushl %d(%%ebx)\n", |
| CONTEXTOFFSET(EFlags) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tpopfl\n" ); |
| fprintf( outfile, "\tmovl %d(%%ebx),%%eax\n", |
| CONTEXTOFFSET(Eax) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tmovl %d(%%ebx),%%ebx\n", |
| CONTEXTOFFSET(Ebx) - sizeof(CONTEXT) ); |
| fprintf( outfile, "\tpopl %%es\n" ); /* Set es */ |
| fprintf( outfile, "\tpopl %%ds\n" ); /* Set ds */ |
| } |
| |
| |
| /******************************************************************* |
| * BuildCallFrom16Func |
| * |
| * Build a 16-bit-to-Wine callback function. The syntax of the function |
| * profile is: call_type_xxxxx, where 'call' is the letter 'c' or 'p' for C or |
| * Pascal calling convention, 'type' is one of 'regs', 'word' or |
| * 'long' and each 'x' is an argument ('w'=word, 's'=signed word, |
| * 'l'=long, 'p'=linear pointer, 't'=linear pointer to null-terminated string, |
| * 'T'=segmented pointer to null-terminated string). |
| * For register functions, the arguments are ignored, but they are still |
| * removed from the stack upon return. |
| * |
| * A special variant of the callback function is generated by the function |
| * profile "t_long_". This is used by the Win95 16->32 thunk |
| * functions C16ThkSL and C16ThkSL01 and is implemented as follows: |
| * On entry, the EBX register is set up to contain a flat pointer to the |
| * 16-bit stack such that EBX+22 points to the first argument. |
| * Then, the entry point is called, while EBP is set up to point |
| * to the return address (on the 32-bit stack). |
| * The called function returns with CX set to the number of bytes |
| * to be popped of the caller's stack. |
| * |
| * Stack layout upon entry to the callback function: |
| * ... ... |
| * (sp+18) word first 16-bit arg |
| * (sp+16) word cs |
| * (sp+14) word ip |
| * (sp+12) word bp |
| * (sp+8) long 32-bit entry point (used to store edx) |
| * (sp+6) word high word of cs (always 0, used to store es) |
| * (sp+4) word low word of cs of 16-bit entry point |
| * (sp+2) word high word of ip (always 0, used to store ds) |
| * (sp) word low word of ip of 16-bit entry point |
| * |
| * Added on the stack: |
| * (sp-4) long ebp |
| * (sp-8) long saved previous stack |
| */ |
| static void BuildCallFrom16Func( FILE *outfile, char *profile ) |
| { |
| int argsize = 0; |
| int short_ret = 0; |
| int reg_func = 0; |
| int cdecl = 0; |
| int thunk = 0; |
| char *args = profile + 7; |
| |
| /* Parse function type */ |
| |
| if (!strncmp( "c_", profile, 2 )) cdecl = 1; |
| else if (!strncmp( "t_", profile, 2 )) thunk = 1; |
| else if (strncmp( "p_", profile, 2 )) |
| { |
| fprintf( stderr, "Invalid function name '%s', ignored\n", profile ); |
| return; |
| } |
| |
| if (!strncmp( "word_", profile + 2, 5 )) short_ret = 1; |
| else if (!strncmp( "regs_", profile + 2, 5 )) reg_func = 1; |
| else if (strncmp( "long_", profile + 2, 5 )) |
| { |
| fprintf( stderr, "Invalid function name '%s', ignored\n", profile ); |
| return; |
| } |
| |
| /* Function header */ |
| |
| fprintf( outfile, "\n\t.align 4\n" ); |
| #ifdef USE_STABS |
| fprintf( outfile, ".stabs \"CallFrom16_%s:F1\",36,0,0," PREFIX "CallFrom16_%s\n", |
| profile, profile); |
| #endif |
| fprintf( outfile, "\t.globl " PREFIX "CallFrom16_%s\n", profile ); |
| fprintf( outfile, PREFIX "CallFrom16_%s:\n", profile ); |
| |
| /* Setup bp to point to its copy on the stack */ |
| |
| fprintf( outfile, "\tpushl %%ebp\n" ); /* Save the full 32-bit ebp */ |
| fprintf( outfile, "\tmovzwl %%sp,%%ebp\n" ); |
| fprintf( outfile, "\taddw $16,%%bp\n" ); |
| |
| /* Save 16-bit ds and es */ |
| |
| /* Stupid FreeBSD assembler doesn't know these either */ |
| /* fprintf( outfile, "\tmovw %%ds,-10(%%ebp)\n" ); */ |
| fprintf( outfile, "\t.byte 0x66,0x8c,0x5d,0xf6\n" ); |
| /* fprintf( outfile, "\tmovw %%es,-6(%%ebp)\n" ); */ |
| fprintf( outfile, "\t.byte 0x66,0x8c,0x45,0xfa\n" ); |
| |
| /* Save %ebx */ |
| |
| fprintf( outfile, "\tpushl %%ebx\n" ); |
| |
| /* Restore 32-bit segment registers */ |
| |
| fprintf( outfile, "\tmovw $0x%04x,%%bx\n", Data_Selector ); |
| #ifdef __svr4__ |
| fprintf( outfile, "\tdata16\n"); |
| #endif |
| fprintf( outfile, "\tmovw %%bx,%%ds\n" ); |
| #ifdef __svr4__ |
| fprintf( outfile, "\tdata16\n"); |
| #endif |
| fprintf( outfile, "\tmovw %%bx,%%es\n" ); |
| |
| fprintf( outfile, "\tmovw %%fs, %%bx\n" ); |
| fprintf( outfile, "\tmovw " PREFIX "CALLTO16_Current_fs,%%fs\n" ); |
| fprintf( outfile, "\t.byte 0x64\n\tmovw %%bx,(%d)\n", FSOFFSET ); |
| |
| /* Get the 32-bit stack pointer from the TEB */ |
| |
| fprintf( outfile, "\t.byte 0x64\n\tmovl (%d),%%ebx\n", STACKOFFSET ); |
| |
| /* Save the 16-bit stack */ |
| |
| #ifdef __svr4__ |
| fprintf( outfile,"\tdata16\n"); |
| #endif |
| fprintf( outfile, "\t.byte 0x64\n\tmovw %%ss,(%d)\n", STACKOFFSET + 2 ); |
| fprintf( outfile, "\t.byte 0x64\n\tmovw %%sp,(%d)\n", STACKOFFSET ); |
| |
| /* Transfer the arguments */ |
| |
| if (reg_func) BuildContext16( outfile ); |
| else if (*args) argsize = TransferArgs16To32( outfile, args, cdecl ); |
| else if (thunk) |
| { |
| /* Get the stack selector base */ |
| fprintf( outfile, "\tmovw %%ss,%%ax\n" ); |
| fprintf( outfile, "\tandl $0xfff8,%%eax\n" ); |
| fprintf( outfile, "\tmovl " PREFIX "ldt_copy(%%eax),%%eax\n" ); |
| fprintf( outfile, "\tmovl %%eax,-20(%%ebp)\n" ); |
| /* Add the offset */ |
| fprintf( outfile, "\tleal -16(%%ebp),%%eax\n" ); |
| fprintf( outfile, "\taddl %%eax,-20(%%ebp)\n" ); |
| } |
| |
| /* Get the address of the API function */ |
| |
| fprintf( outfile, "\tmovl -4(%%ebp),%%eax\n" ); |
| |
| /* If necessary, save %edx over the API function address */ |
| |
| if (!reg_func && short_ret) |
| fprintf( outfile, "\tmovl %%edx,-4(%%ebp)\n" ); |
| |
| /* Restore %ebx and store the 32-bit stack pointer instead */ |
| |
| fprintf( outfile, "\tmovl %%ebx,%%ebp\n" ); |
| fprintf( outfile, "\tpopl %%ebx\n" ); |
| fprintf( outfile, "\tpushl %%ebp\n" ); |
| |
| /* Switch to the 32-bit stack */ |
| |
| fprintf( outfile, "\tpushl %%ds\n" ); |
| fprintf( outfile, "\tpopl %%ss\n" ); |
| fprintf( outfile, "\tleal -%d(%%ebp),%%esp\n", |
| reg_func ? sizeof(CONTEXT) : 4 * strlen(args) ); |
| if (reg_func) /* Push the address of the context struct */ |
| fprintf( outfile, "\tpushl %%esp\n" ); |
| |
| /* Setup %ebp to point to the previous stack frame (built by CallTo16) */ |
| |
| fprintf( outfile, "\taddl $%d,%%ebp\n", STRUCTOFFSET(STACK32FRAME,ebp) ); |
| |
| /* Print the debug information before the call */ |
| |
| if (debugging && !thunk) |
| { |
| int ftype = 0; |
| |
| if (cdecl) ftype |= 4; |
| if (reg_func) ftype |= 2; |
| if (short_ret) ftype |= 1; |
| |
| fprintf( outfile, "\tpushl %%eax\n" ); |
| fprintf( outfile, "\tpushl $Profile_%s\n", profile ); |
| fprintf( outfile, "\tpushl $%d\n", ftype ); |
| fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16\n" ); |
| fprintf( outfile, "\tpopl %%eax\n" ); |
| fprintf( outfile, "\tpopl %%eax\n" ); |
| fprintf( outfile, "\tpopl %%eax\n" ); |
| } |
| |
| /* Call the entry point */ |
| |
| if (thunk) |
| { |
| fprintf( outfile, "\tpushl %%ebp\n" ); |
| fprintf( outfile, "\tleal -4(%%esp), %%ebp\n" ); |
| fprintf( outfile, "\tcall *%%eax\n" ); |
| fprintf( outfile, "\tpopl %%ebp\n" ); |
| } |
| else |
| fprintf( outfile, "\tcall *%%eax\n" ); |
| |
| |
| /* Print the debug information after the call */ |
| |
| if (debugging && !thunk) |
| { |
| if (reg_func) |
| { |
| /* Push again the address of the context struct in case */ |
| /* it has been removed by an stdcall function */ |
| fprintf( outfile, "\tleal -%d(%%ebp),%%esp\n", |
| sizeof(CONTEXT) + STRUCTOFFSET(STACK32FRAME,ebp) ); |
| fprintf( outfile, "\tpushl %%esp\n" ); |
| } |
| fprintf( outfile, "\tpushl %%eax\n" ); |
| fprintf( outfile, "\tpushl $%d\n", reg_func ? 2 : (short_ret ? 1 : 0)); |
| fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallFrom16Ret\n" ); |
| fprintf( outfile, "\tpopl %%eax\n" ); |
| fprintf( outfile, "\tpopl %%eax\n" ); |
| } |
| |
| /* Restore the 16-bit stack */ |
| |
| #ifdef __svr4__ |
| fprintf( outfile, "\tdata16\n"); |
| #endif |
| fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%ss\n", STACKOFFSET + 2 ); |
| fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%sp\n", STACKOFFSET ); |
| fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET ); |
| fprintf( outfile, "\tmovw %%fs," PREFIX "CALLTO16_Current_fs\n" ); |
| |
| fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%bx\n", FSOFFSET ); |
| fprintf( outfile, "\tmovw %%bx, %%fs\n" ); |
| |
| if (reg_func) |
| { |
| /* Calc the arguments size */ |
| while (*args) |
| { |
| switch(*args) |
| { |
| case 'w': |
| case 's': |
| argsize += 2; |
| break; |
| case 'p': |
| case 't': |
| case 'l': |
| case 'T': |
| argsize += 4; |
| break; |
| default: |
| fprintf( stderr, "Unknown arg type '%c'\n", *args ); |
| } |
| args++; |
| } |
| |
| /* Restore registers from the context structure */ |
| RestoreContext16( outfile ); |
| } |
| else |
| { |
| /* Restore high 16 bits of ebp */ |
| fprintf( outfile, "\tpopl %%ebp\n" ); |
| |
| /* Restore ds and es */ |
| fprintf( outfile, "\tincl %%esp\n" ); /* Remove ip */ |
| fprintf( outfile, "\tincl %%esp\n" ); |
| fprintf( outfile, "\tpopl %%edx\n" ); /* Remove cs and ds */ |
| fprintf( outfile, "\tmovw %%dx,%%ds\n" ); /* and restore ds */ |
| fprintf( outfile, "\t.byte 0x66\n\tpopl %%es\n" ); /* Restore es */ |
| |
| if (short_ret) fprintf( outfile, "\tpopl %%edx\n" ); /* Restore edx */ |
| else |
| { |
| /* Get the return value into dx:ax */ |
| fprintf( outfile, "\tmovl %%eax,%%edx\n" ); |
| fprintf( outfile, "\tshrl $16,%%edx\n" ); |
| /* Remove API entry point */ |
| fprintf( outfile, "\taddl $4,%%esp\n" ); |
| } |
| |
| /* Restore low 16 bits of ebp */ |
| fprintf( outfile, "\tpopw %%bp\n" ); |
| } |
| |
| /* Remove the arguments and return */ |
| |
| if (thunk) |
| { |
| fprintf( outfile, "\tpopl %%ebx\n" ); |
| fprintf( outfile, "\txorb %%ch,%%ch\n" ); |
| fprintf( outfile, "\taddw %%cx, %%sp\n" ); |
| fprintf( outfile, "\tpushl %%ebx\n" ); |
| fprintf( outfile, "\t.byte 0x66\n" ); |
| fprintf( outfile, "\tlret\n" ); |
| } |
| else if (argsize && !cdecl) |
| { |
| fprintf( outfile, "\t.byte 0x66\n" ); |
| fprintf( outfile, "\tlret $%d\n", argsize ); |
| } |
| else |
| { |
| fprintf( outfile, "\t.byte 0x66\n" ); |
| fprintf( outfile, "\tlret\n" ); |
| } |
| } |
| |
| |
| /******************************************************************* |
| * BuildCallTo16Func |
| * |
| * Build a Wine-to-16-bit callback function. |
| * |
| * Stack frame of the callback function: |
| * ... ... |
| * (ebp+16) arg2 |
| * (ebp+12) arg1 |
| * (ebp+8) func to call |
| * (ebp+4) return address |
| * (ebp) previous ebp |
| * |
| * Prototypes for the CallTo16 functions: |
| * extern WINAPI WORD CallTo16_word_xxx( FARPROC16 func, args... ); |
| * extern WINAPI LONG CallTo16_long_xxx( FARPROC16 func, args... ); |
| * extern WINAPI void CallTo16_sreg_( const CONTEXT *context, int nb_args ); |
| * extern WINAPI void CallTo16_lreg_( const CONTEXT *context, int nb_args ); |
| */ |
| static void BuildCallTo16Func( FILE *outfile, char *profile ) |
| { |
| int short_ret = 0; |
| int reg_func = 0; |
| char *args = profile + 5; |
| |
| if (!strncmp( "word_", profile, 5 )) short_ret = 1; |
| else if (!strncmp( "sreg_", profile, 5 )) reg_func = 1; |
| else if (!strncmp( "lreg_", profile, 5 )) reg_func = 2; |
| else if (strncmp( "long_", profile, 5 )) |
| { |
| fprintf( stderr, "Invalid function name '%s'.\n", profile ); |
| exit(1); |
| } |
| |
| /* Function header */ |
| |
| fprintf( outfile, "\n\t.align 4\n" ); |
| #ifdef USE_STABS |
| fprintf( outfile, ".stabs \"CallTo16_%s:F1\",36,0,0," PREFIX "CallTo16_%s\n", |
| profile, profile); |
| #endif |
| fprintf( outfile, "\t.globl " PREFIX "CallTo16_%s\n", profile ); |
| fprintf( outfile, PREFIX "CallTo16_%s:\n", profile ); |
| |
| /* Entry code */ |
| |
| fprintf( outfile, "\tpushl %%ebp\n" ); |
| fprintf( outfile, "\tmovl %%esp,%%ebp\n" ); |
| |
| /* Call the actual CallTo16 routine (simulate a lcall) */ |
| |
| fprintf( outfile, "\tpushl %%cs\n" ); |
| fprintf( outfile, "\tcall do_callto16_%s\n", profile ); |
| |
| /* Exit code */ |
| |
| /* FIXME: this is a hack because of task.c */ |
| if (!strcmp( profile, "word_" )) |
| { |
| fprintf( outfile, ".globl " PREFIX "CALLTO16_Restore\n" ); |
| fprintf( outfile, PREFIX "CALLTO16_Restore:\n" ); |
| } |
| fprintf( outfile, "\tpopl %%ebp\n" ); |
| fprintf( outfile, "\tret $%d\n", 4 * strlen(args) + 4 ); |
| |
| /* Start of the actual CallTo16 routine */ |
| |
| /* Save the 32-bit registers */ |
| |
| fprintf( outfile, "do_callto16_%s:\n", profile ); |
| fprintf( outfile, "\tpushl %%ebx\n" ); |
| fprintf( outfile, "\tpushl %%ecx\n" ); |
| fprintf( outfile, "\tpushl %%edx\n" ); |
| fprintf( outfile, "\tpushl %%esi\n" ); |
| fprintf( outfile, "\tpushl %%edi\n" ); |
| |
| /* Print debugging info */ |
| |
| if (debugging) |
| { |
| /* Push the address of the first argument */ |
| fprintf( outfile, "\tleal 8(%%ebp),%%eax\n" ); |
| fprintf( outfile, "\tpushl $%d\n", reg_func ? -1 : strlen(args) ); |
| fprintf( outfile, "\tpushl %%eax\n" ); |
| fprintf( outfile, "\tcall " PREFIX "RELAY_DebugCallTo16\n" ); |
| fprintf( outfile, "\tpopl %%eax\n" ); |
| fprintf( outfile, "\tpopl %%eax\n" ); |
| } |
| |
| /* Save the 32-bit stack and %fs */ |
| |
| fprintf( outfile, "\t.byte 0x64\n\tpushl (%d)\n", STACKOFFSET ); |
| fprintf( outfile, "\tmovl %%ebp,%%ebx\n" ); |
| fprintf( outfile, "\tmovl %%esp,%%edx\n" ); |
| fprintf( outfile, "\tmovw %%fs," PREFIX "CALLTO16_Current_fs\n" ); |
| |
| if (reg_func) |
| { |
| /* Switch to the 16-bit stack, saving the current %%esp, */ |
| /* and adding the specified offset to the new sp */ |
| fprintf( outfile, "\t.byte 0x64\n\tmovzwl (%d),%%eax\n", STACKOFFSET ); |
| fprintf( outfile, "\tsubl 12(%%ebx),%%eax\n" ); /* Get the offset */ |
| #ifdef __svr4__ |
| fprintf( outfile,"\tdata16\n"); |
| #endif |
| fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%ss\n", STACKOFFSET + 2); |
| fprintf( outfile, "\tmovl %%eax,%%esp\n" ); |
| fprintf( outfile, "\t.byte 0x64\n\tmovl %%edx,(%d)\n", STACKOFFSET ); |
| |
| fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%cx\n", FSOFFSET ); |
| fprintf( outfile, "\tmovw %%cx, %%fs\n" ); |
| |
| /* Get the registers. ebx is handled later on. */ |
| |
| fprintf( outfile, "\tmovl 8(%%ebx),%%ebx\n" ); |
| fprintf( outfile, "\tmovl %d(%%ebx),%%eax\n", CONTEXTOFFSET(SegEs) ); |
| fprintf( outfile, "\tmovw %%ax,%%es\n" ); |
| fprintf( outfile, "\tmovl %d(%%ebx),%%ebp\n", CONTEXTOFFSET(Ebp) ); |
| fprintf( outfile, "\tmovl %d(%%ebx),%%eax\n", CONTEXTOFFSET(Eax) ); |
| fprintf( outfile, "\tmovl %d(%%ebx),%%ecx\n", CONTEXTOFFSET(Ecx) ); |
| fprintf( outfile, "\tmovl %d(%%ebx),%%edx\n", CONTEXTOFFSET(Edx) ); |
| fprintf( outfile, "\tmovl %d(%%ebx),%%esi\n", CONTEXTOFFSET(Esi) ); |
| fprintf( outfile, "\tmovl %d(%%ebx),%%edi\n", CONTEXTOFFSET(Edi) ); |
| |
| /* Push the return address |
| * With sreg suffix, we push 16:16 address (normal lret) |
| * With lreg suffix, we push 16:32 address (0x66 lret, for KERNEL32_45) |
| */ |
| if (reg_func == 1) |
| fprintf( outfile, "\tpushl " PREFIX "CALLTO16_RetAddr_long\n" ); |
| else |
| { |
| fprintf( outfile, "\tpushw $0\n" ); |
| fprintf( outfile, "\tpushw " PREFIX "CALLTO16_RetAddr_eax+2\n" ); |
| fprintf( outfile, "\tpushw $0\n" ); |
| fprintf( outfile, "\tpushw " PREFIX "CALLTO16_RetAddr_eax\n" ); |
| } |
| |
| /* Push the called routine address */ |
| |
| fprintf( outfile, "\tpushw %d(%%ebx)\n", CONTEXTOFFSET(SegCs) ); |
| fprintf( outfile, "\tpushw %d(%%ebx)\n", CONTEXTOFFSET(Eip) ); |
| |
| /* Get the 16-bit ds */ |
| |
| fprintf( outfile, "\tpushl %d(%%ebx)\n", CONTEXTOFFSET(SegDs) ); |
| /* Get ebx from the 32-bit stack */ |
| fprintf( outfile, "\tmovl %d(%%ebx),%%ebx\n", CONTEXTOFFSET(Ebx) ); |
| fprintf( outfile, "\tpopl %%ds\n" ); |
| } |
| else /* not a register function */ |
| { |
| int pos = 12; /* first argument position */ |
| |
| /* Switch to the 16-bit stack */ |
| #ifdef __svr4__ |
| fprintf( outfile,"\tdata16\n"); |
| #endif |
| fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%ss\n", STACKOFFSET + 2); |
| fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%sp\n", STACKOFFSET ); |
| fprintf( outfile, "\t.byte 0x64\n\tmovl %%edx,(%d)\n", STACKOFFSET ); |
| |
| fprintf( outfile, "\t.byte 0x64\n\tmovw (%d),%%cx\n", FSOFFSET ); |
| fprintf( outfile, "\tmovw %%cx, %%fs\n" ); |
| |
| /* Make %bp point to the previous stackframe (built by CallFrom16) */ |
| fprintf( outfile, "\tmovzwl %%sp,%%ebp\n" ); |
| fprintf( outfile, "\tleal %d(%%ebp),%%ebp\n", |
| STRUCTOFFSET(STACK16FRAME,bp) ); |
| |
| /* Transfer the arguments */ |
| |
| while (*args) |
| { |
| switch(*args++) |
| { |
| case 'w': /* word */ |
| fprintf( outfile, "\tpushw %d(%%ebx)\n", pos ); |
| break; |
| case 'l': /* long */ |
| fprintf( outfile, "\tpushl %d(%%ebx)\n", pos ); |
| break; |
| default: |
| fprintf( stderr, "Unexpected case '%c' in BuildCallTo16Func\n", |
| args[-1] ); |
| } |
| pos += 4; |
| } |
| |
| /* Push the return address */ |
| |
| fprintf( outfile, "\tpushl " PREFIX "CALLTO16_RetAddr_%s\n", |
| short_ret ? "word" : "long" ); |
| |
| /* Push the called routine address */ |
| |
| fprintf( outfile, "\tpushl 8(%%ebx)\n" ); |
| |
| /* Set %ds and %es (and %ax just in case) equal to %ss */ |
| |
| fprintf( outfile, "\tmovw %%ss,%%ax\n" ); |
| fprintf( outfile, "\tmovw %%ax,%%ds\n" ); |
| fprintf( outfile, "\tmovw %%ax,%%es\n" ); |
| } |
| |
| /* Jump to the called routine */ |
| |
| fprintf( outfile, "\t.byte 0x66\n" ); |
| fprintf( outfile, "\tlret\n" ); |
| } |
| |
| |
| /******************************************************************* |
| * BuildRet16Func |
| * |
| * Build the return code for 16-bit callbacks |
| */ |
| static void BuildRet16Func( FILE *outfile ) |
| { |
| fprintf( outfile, "\t.globl " PREFIX "CALLTO16_Ret_word\n" ); |
| fprintf( outfile, "\t.globl " PREFIX "CALLTO16_Ret_long\n" ); |
| fprintf( outfile, "\t.globl " PREFIX "CALLTO16_Ret_eax\n" ); |
| |
| fprintf( outfile, PREFIX "CALLTO16_Ret_word:\n" ); |
| fprintf( outfile, "\txorl %%edx,%%edx\n" ); |
| |
| /* Put return value into %eax */ |
| |
| fprintf( outfile, PREFIX "CALLTO16_Ret_long:\n" ); |
| fprintf( outfile, "\tshll $16,%%edx\n" ); |
| fprintf( outfile, "\tmovw %%ax,%%dx\n" ); |
| fprintf( outfile, "\tmovl %%edx,%%eax\n" ); |
| fprintf( outfile, PREFIX "CALLTO16_Ret_eax:\n" ); |
| |
| /* Restore 32-bit segment registers */ |
| |
| fprintf( outfile, "\tmovw $0x%04x,%%bx\n", Data_Selector ); |
| #ifdef __svr4__ |
| fprintf( outfile, "\tdata16\n"); |
| #endif |
| fprintf( outfile, "\tmovw %%bx,%%ds\n" ); |
| #ifdef __svr4__ |
| fprintf( outfile, "\tdata16\n"); |
| #endif |
| fprintf( outfile, "\tmovw %%bx,%%es\n" ); |
| |
| fprintf( outfile, "\tmovw %%fs, %%cx\n" ); |
| fprintf( outfile, "\tmovw " PREFIX "CALLTO16_Current_fs,%%fs\n" ); |
| fprintf( outfile, "\t.byte 0x64\n\tmovw %%cx,(%d)\n", FSOFFSET ); |
| |
| /* Restore the 32-bit stack */ |
| |
| #ifdef __svr4__ |
| fprintf( outfile, "\tdata16\n"); |
| #endif |
| fprintf( outfile, "\tmovw %%bx,%%ss\n" ); |
| fprintf( outfile, "\t.byte 0x64\n\tmovl (%d),%%esp\n", STACKOFFSET ); |
| fprintf( outfile, "\t.byte 0x64\n\tpopl (%d)\n", STACKOFFSET ); |
| |
| /* Restore the 32-bit registers */ |
| |
| fprintf( outfile, "\tpopl %%edi\n" ); |
| fprintf( outfile, "\tpopl %%esi\n" ); |
| fprintf( outfile, "\tpopl %%edx\n" ); |
| fprintf( outfile, "\tpopl %%ecx\n" ); |
| fprintf( outfile, "\tpopl %%ebx\n" ); |
| |
| /* Return to caller */ |
| |
| fprintf( outfile, "\tlret\n" ); |
| |
| /* Declare the return address variables */ |
| |
| fprintf( outfile, "\t.data\n" ); |
| fprintf( outfile, "\t.globl " PREFIX "CALLTO16_RetAddr_word\n" ); |
| fprintf( outfile, "\t.globl " PREFIX "CALLTO16_RetAddr_long\n" ); |
| fprintf( outfile, "\t.globl " PREFIX "CALLTO16_RetAddr_eax\n" ); |
| fprintf( outfile, PREFIX "CALLTO16_RetAddr_word:\t.long 0\n" ); |
| fprintf( outfile, PREFIX "CALLTO16_RetAddr_long:\t.long 0\n" ); |
| fprintf( outfile, PREFIX "CALLTO16_RetAddr_eax:\t.long 0\n" ); |
| fprintf( outfile, "\t.text\n" ); |
| } |
| |
| |
| /******************************************************************* |
| * BuildCallTo32LargeStack |
| * |
| * Build the function used to switch to the original 32-bit stack |
| * before calling a 32-bit function from 32-bit code. This is used for |
| * functions that need a large stack, like X bitmaps functions. |
| * |
| * The generated function has the following prototype: |
| * int xxx( int (*func)(), void *arg ); |
| * |
| * The pointer to the function can be retrieved by calling CALL32_Init, |
| * which also takes care of saving the current 32-bit stack pointer. |
| * |
| * Stack layout: |
| * ... ... |
| * (ebp+12) arg |
| * (ebp+8) func |
| * (ebp+4) ret addr |
| * (ebp) ebp |
| */ |
| static void BuildCallTo32LargeStack( FILE *outfile ) |
| { |
| /* Initialization function */ |
| |
| fprintf( outfile, "\n\t.align 4\n" ); |
| #ifdef USE_STABS |
| fprintf( outfile, ".stabs \"CALL32_Init:F1\",36,0,0," PREFIX "CALL32_Init\n"); |
| #endif |
| fprintf( outfile, "\t.globl " PREFIX "CALL32_Init\n" ); |
| fprintf( outfile, "\t.type " PREFIX "CALL32_Init,@function\n" ); |
| fprintf( outfile, PREFIX "CALL32_Init:\n" ); |
| fprintf( outfile, "\tleal -256(%%esp),%%eax\n" ); |
| fprintf( outfile, "\tmovl %%eax,CALL32_Original32_esp\n" ); |
| fprintf( outfile, "\tmovl $CALL32_LargeStack,%%eax\n" ); |
| fprintf( outfile, "\tret\n" ); |
| |
| /* Function header */ |
| |
| fprintf( outfile, "\n\t.align 4\n" ); |
| #ifdef USE_STABS |
| fprintf( outfile, ".stabs \"CALL32_LargeStack:F1\",36,0,0,CALL32_LargeStack\n"); |
| #endif |
| fprintf( outfile, "CALL32_LargeStack:\n" ); |
| |
| /* Entry code */ |
| |
| fprintf( outfile, "\tpushl %%ebp\n" ); |
| fprintf( outfile, "\tmovl %%esp,%%ebp\n" ); |
| |
| /* Switch to the original 32-bit stack pointer */ |
| |
| fprintf( outfile, "\tmovl CALL32_Original32_esp, %%esp\n" ); |
| |
| /* Transfer the argument and call the function */ |
| |
| fprintf( outfile, "\tpushl 12(%%ebp)\n" ); |
| fprintf( outfile, "\tcall *8(%%ebp)\n" ); |
| |
| /* Restore registers and return */ |
| |
| fprintf( outfile, "\tmovl %%ebp,%%esp\n" ); |
| fprintf( outfile, "\tpopl %%ebp\n" ); |
| fprintf( outfile, "\tret\n" ); |
| |
| /* Data */ |
| |
| fprintf( outfile, "\t.data\n" ); |
| fprintf( outfile, "CALL32_Original32_esp:\t.long 0\n" ); |
| fprintf( outfile, "\t.text\n" ); |
| } |
| |
| |
| /******************************************************************* |
| * BuildCallFrom32Regs |
| * |
| * Build a 32-bit-to-Wine call-back function for a 'register' function. |
| * 'args' is the number of dword arguments. |
| * |
| * Stack layout: |
| * ... ... |
| * (esp+336) ret addr (or relay addr when debugging(relay) is on) |
| * (esp+332) entry point |
| * (esp+204) buffer area to allow stack frame manipulation |
| * (esp+0) CONTEXT struct |
| */ |
| static void BuildCallFrom32Regs( FILE *outfile ) |
| { |
| #define STACK_SPACE 128 |
| |
| /* Function header */ |
| |
| fprintf( outfile, "\n\t.align 4\n" ); |
| #ifdef USE_STABS |
| fprintf( outfile, ".stabs \"CALL32_Regs:F1\",36,0,0," PREFIX "CALL32_Regs\n" ); |
| #endif |
| fprintf( outfile, "\t.globl " PREFIX "CALL32_Regs\n" ); |
| fprintf( outfile, PREFIX "CALL32_Regs:\n" ); |
| |
| /* Allocate some buffer space on the stack */ |
| |
| fprintf( outfile, "\tleal -%d(%%esp), %%esp\n", STACK_SPACE ); |
| |
| /* Build the context structure */ |
| |
| fprintf( outfile, "\tpushw $0\n" ); |
| fprintf( outfile, "\t.byte 0x66\n\tpushl %%ss\n" ); |
| fprintf( outfile, "\tpushl %%eax\n" ); /* %esp place holder */ |
| fprintf( outfile, "\tpushfl\n" ); |
| fprintf( outfile, "\tpushw $0\n" ); |
| fprintf( outfile, "\t.byte 0x66\n\tpushl %%cs\n" ); |
| fprintf( outfile, "\tpushl %d(%%esp)\n", 16+STACK_SPACE+4 ); /* %eip at time of call */ |
| fprintf( outfile, "\tpushl %%ebp\n" ); |
| |
| fprintf( outfile, "\tpushl %%eax\n" ); |
| fprintf( outfile, "\tpushl %%ecx\n" ); |
| fprintf( outfile, "\tpushl %%edx\n" ); |
| fprintf( outfile, "\tpushl %%ebx\n" ); |
| fprintf( outfile, "\tpushl %%esi\n" ); |
| fprintf( outfile, "\tpushl %%edi\n" ); |
| |
| fprintf( outfile, "\txorl %%eax,%%eax\n" ); |
| fprintf( outfile, "\tmovw %%ds,%%ax\n" ); |
| fprintf( outfile, "\tpushl %%eax\n" ); |
| fprintf( outfile, "\tmovw %%es,%%ax\n" ); |
| fprintf( outfile, "\tpushl %%eax\n" ); |
| fprintf( outfile, "\tmovw %%fs,%%ax\n" ); |
| fprintf( outfile, "\tpushl %%eax\n" ); |
| fprintf( outfile, "\tmovw %%gs,%%ax\n" ); |
| fprintf( outfile, "\tpushl %%eax\n" ); |
| |
| fprintf( outfile, "\tleal -%d(%%esp),%%esp\n", |
| sizeof(FLOATING_SAVE_AREA) + 6 * sizeof(DWORD) /* DR regs */ ); |
| fprintf( outfile, "\tpushl $0x0001001f\n" ); /* ContextFlags */ |
| |
| fprintf( outfile, "\tfsave %d(%%esp)\n", CONTEXTOFFSET(FloatSave) ); |
| |
| fprintf( outfile, "\tleal %d(%%esp),%%eax\n", |
| sizeof(CONTEXT) + STACK_SPACE + 4 ); /* %esp at time of call */ |
| fprintf( outfile, "\tmovl %%eax,%d(%%esp)\n", CONTEXTOFFSET(Esp) ); |
| |
| fprintf( outfile, "\tcall " PREFIX "RELAY_CallFrom32Regs\n" ); |
| |
| /* Restore the context structure */ |
| |
| fprintf( outfile, "\tfrstor %d(%%esp)\n", CONTEXTOFFSET(FloatSave) ); |
| |
| /* Store %eip value onto the new stack */ |
| |
| fprintf( outfile, "\tmovl %d(%%esp),%%eax\n", CONTEXTOFFSET(Eip) ); |
| fprintf( outfile, "\tmovl %d(%%esp),%%ebx\n", CONTEXTOFFSET(Esp) ); |
| fprintf( outfile, "\tmovl %%eax,0(%%ebx)\n" ); |
| |
| /* Restore all registers */ |
| |
| fprintf( outfile, "\tleal %d(%%esp),%%esp\n", |
| sizeof(FLOATING_SAVE_AREA) + 7 * sizeof(DWORD) ); |
| fprintf( outfile, "\tpopl %%eax\n" ); |
| fprintf( outfile, "\tmovw %%ax,%%gs\n" ); |
| fprintf( outfile, "\tpopl %%eax\n" ); |
| fprintf( outfile, "\tmovw %%ax,%%fs\n" ); |
| fprintf( outfile, "\tpopl %%eax\n" ); |
| fprintf( outfile, "\tmovw %%ax,%%es\n" ); |
| fprintf( outfile, "\tpopl %%eax\n" ); |
| fprintf( outfile, "\tmovw %%ax,%%ds\n" ); |
| |
| fprintf( outfile, "\tpopl %%edi\n" ); |
| fprintf( outfile, "\tpopl %%esi\n" ); |
| fprintf( outfile, "\tpopl %%ebx\n" ); |
| fprintf( outfile, "\tpopl %%edx\n" ); |
| fprintf( outfile, "\tpopl %%ecx\n" ); |
| fprintf( outfile, "\tpopl %%eax\n" ); |
| fprintf( outfile, "\tpopl %%ebp\n" ); |
| fprintf( outfile, "\tleal 8(%%esp),%%esp\n" ); /* skip %eip and %cs */ |
| fprintf( outfile, "\tpopfl\n" ); |
| fprintf( outfile, "\tpopl %%esp\n" ); |
| fprintf( outfile, "\tret\n" ); |
| |
| #undef STACK_SPACE |
| } |
| |
| |
| /******************************************************************* |
| * BuildSpec |
| * |
| * Build the spec files |
| */ |
| static int BuildSpec( FILE *outfile, int argc, char *argv[] ) |
| { |
| int i; |
| for (i = 2; i < argc; i++) |
| if (BuildSpecFile( outfile, argv[i] ) < 0) return -1; |
| return 0; |
| } |
| |
| |
| /******************************************************************* |
| * BuildCallFrom16 |
| * |
| * Build the 16-bit-to-Wine callbacks |
| */ |
| static int BuildCallFrom16( FILE *outfile, char * outname, int argc, char *argv[] ) |
| { |
| int i; |
| char buffer[1024]; |
| |
| /* File header */ |
| |
| fprintf( outfile, "/* File generated automatically. Do not edit! */\n\n" ); |
| fprintf( outfile, "\t.text\n" ); |
| |
| #ifdef USE_STABS |
| fprintf( outfile, "\t.file\t\"%s\"\n", outname ); |
| getcwd(buffer, sizeof(buffer)); |
| |
| /* |
| * The stabs help the internal debugger as they are an indication that it |
| * is sensible to step into a thunk/trampoline. |
| */ |
| fprintf( outfile, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer); |
| fprintf( outfile, ".stabs \"%s\",100,0,0,Code_Start\n", outname); |
| fprintf( outfile, "\t.text\n" ); |
| fprintf( outfile, "\t.align 4\n" ); |
| fprintf( outfile, "Code_Start:\n\n" ); |
| #endif |
| |
| /* Build the callback functions */ |
| |
| for (i = 2; i < argc; i++) BuildCallFrom16Func( outfile, argv[i] ); |
| |
| /* Build the thunk callback function */ |
| |
| BuildCallFrom16Func( outfile, "t_long_" ); |
| |
| /* Output the argument debugging strings */ |
| |
| if (debugging) |
| { |
| fprintf( outfile, "/* Argument strings */\n" ); |
| for (i = 2; i < argc; i++) |
| { |
| fprintf( outfile, "Profile_%s:\t", argv[i] ); |
| fprintf( outfile, STRING " \"%s\\0\"\n", argv[i] + 7 ); |
| } |
| } |
| |
| #ifdef USE_STABS |
| fprintf( outfile, "\t.text\n"); |
| fprintf( outfile, "\t.stabs \"\",100,0,0,.Letext\n"); |
| fprintf( outfile, ".Letext:\n"); |
| #endif |
| |
| return 0; |
| } |
| |
| |
| /******************************************************************* |
| * BuildCallTo16 |
| * |
| * Build the Wine-to-16-bit callbacks |
| */ |
| static int BuildCallTo16( FILE *outfile, char * outname, int argc, char *argv[] ) |
| { |
| char buffer[1024]; |
| FILE *infile; |
| |
| if (argc > 2) |
| { |
| infile = fopen( argv[2], "r" ); |
| if (!infile) |
| { |
| perror( argv[2] ); |
| exit( 1 ); |
| } |
| } |
| else infile = stdin; |
| |
| /* File header */ |
| |
| fprintf( outfile, "/* File generated automatically. Do not edit! */\n\n" ); |
| fprintf( outfile, "\t.text\n" ); |
| |
| #ifdef USE_STABS |
| fprintf( outfile, "\t.file\t\"%s\"\n", outname ); |
| getcwd(buffer, sizeof(buffer)); |
| |
| /* |
| * The stabs help the internal debugger as they are an indication that it |
| * is sensible to step into a thunk/trampoline. |
| */ |
| fprintf( outfile, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer); |
| fprintf( outfile, ".stabs \"%s\",100,0,0,Code_Start\n", outname); |
| fprintf( outfile, "\t.text\n" ); |
| fprintf( outfile, "\t.align 4\n" ); |
| fprintf( outfile, "Code_Start:\n\n" ); |
| #endif |
| |
| fprintf( outfile, "\t.globl " PREFIX "CALLTO16_Start\n" ); |
| fprintf( outfile, PREFIX "CALLTO16_Start:\n" ); |
| |
| /* Build the callback functions */ |
| |
| while (fgets( buffer, sizeof(buffer), infile )) |
| { |
| if (strstr( buffer, "### start build ###" )) break; |
| } |
| while (fgets( buffer, sizeof(buffer), infile )) |
| { |
| char *p = strstr( buffer, "CallTo16_" ); |
| if (p) |
| { |
| char *profile = p + strlen( "CallTo16_" ); |
| p = profile; |
| while ((*p == '_') || isalpha(*p)) p++; |
| *p = '\0'; |
| BuildCallTo16Func( outfile, profile ); |
| } |
| if (strstr( buffer, "### stop build ###" )) break; |
| } |
| |
| /* Output the 16-bit return code */ |
| |
| BuildRet16Func( outfile ); |
| |
| fprintf( outfile, "\t.globl " PREFIX "CALLTO16_End\n" ); |
| fprintf( outfile, PREFIX "CALLTO16_End:\n" ); |
| |
| #ifdef USE_STABS |
| fprintf( outfile, "\t.text\n"); |
| fprintf( outfile, "\t.stabs \"\",100,0,0,.Letext\n"); |
| fprintf( outfile, ".Letext:\n"); |
| #endif |
| |
| fclose( infile ); |
| return 0; |
| } |
| |
| |
| /******************************************************************* |
| * BuildCall32 |
| * |
| * Build the 32-bit callbacks |
| */ |
| static int BuildCall32( FILE *outfile, char * outname ) |
| { |
| char buffer[1024]; |
| |
| /* File header */ |
| |
| fprintf( outfile, "/* File generated automatically. Do not edit! */\n\n" ); |
| fprintf( outfile, "\t.text\n" ); |
| |
| #ifdef __i386__ |
| |
| #ifdef USE_STABS |
| fprintf( outfile, "\t.file\t\"%s\"\n", outname ); |
| getcwd(buffer, sizeof(buffer)); |
| |
| /* |
| * The stabs help the internal debugger as they are an indication that it |
| * is sensible to step into a thunk/trampoline. |
| */ |
| fprintf( outfile, ".stabs \"%s/\",100,0,0,Code_Start\n", buffer); |
| fprintf( outfile, ".stabs \"%s\",100,0,0,Code_Start\n", outname); |
| fprintf( outfile, "\t.text\n" ); |
| fprintf( outfile, "\t.align 4\n" ); |
| fprintf( outfile, "Code_Start:\n" ); |
| #endif |
| |
| /* Build the 32-bit large stack callback */ |
| |
| BuildCallTo32LargeStack( outfile ); |
| |
| /* Build the register callback function */ |
| |
| BuildCallFrom32Regs( outfile ); |
| |
| #ifdef USE_STABS |
| fprintf( outfile, "\t.text\n"); |
| fprintf( outfile, "\t.stabs \"\",100,0,0,.Letext\n"); |
| fprintf( outfile, ".Letext:\n"); |
| #endif |
| |
| #else /* __i386__ */ |
| |
| /* Just to avoid an empty file */ |
| fprintf( outfile, "\t.long 0\n" ); |
| |
| #endif /* __i386__ */ |
| return 0; |
| } |
| |
| |
| /******************************************************************* |
| * usage |
| */ |
| static void usage(void) |
| { |
| fprintf( stderr, |
| "usage: build [-o outfile] -spec SPECNAMES\n" |
| " build [-o outfile] -callfrom16 FUNCTION_PROFILES\n" |
| " build [-o outfile] -callto16 FUNCTION_PROFILES\n" |
| " build [-o outfile] -call32\n" ); |
| exit(1); |
| } |
| |
| |
| /******************************************************************* |
| * main |
| */ |
| int main(int argc, char **argv) |
| { |
| char *outname = NULL; |
| FILE *outfile = stdout; |
| int res = -1; |
| |
| if (argc < 2) usage(); |
| |
| if (!strcmp( argv[1], "-o" )) |
| { |
| outname = argv[2]; |
| argv += 2; |
| argc -= 2; |
| if (argc < 2) usage(); |
| if (!(outfile = fopen( outname, "w" ))) |
| { |
| fprintf( stderr, "Unable to create output file '%s'\n", outname ); |
| exit(1); |
| } |
| } |
| |
| /* Retrieve the selector values; this assumes that we are building |
| * the asm files on the platform that will also run them. Probably |
| * a safe assumption to make. |
| */ |
| GET_CS( Code_Selector ); |
| GET_DS( Data_Selector ); |
| |
| if (!strcmp( argv[1], "-spec" )) |
| res = BuildSpec( outfile, argc, argv ); |
| else if (!strcmp( argv[1], "-callfrom16" )) |
| res = BuildCallFrom16( outfile, outname, argc, argv ); |
| else if (!strcmp( argv[1], "-callto16" )) |
| res = BuildCallTo16( outfile, outname, argc, argv ); |
| else if (!strcmp( argv[1], "-call32" )) |
| res = BuildCall32( outfile, outname ); |
| else |
| { |
| fclose( outfile ); |
| unlink( outname ); |
| usage(); |
| } |
| |
| fclose( outfile ); |
| if (res < 0) |
| { |
| unlink( outname ); |
| return 1; |
| } |
| return 0; |
| } |
