2 * Small utility functions for winebuild
4 * Copyright 2000 Alexandre Julliard
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #include "wine/port.h"
38 #define MAX_TMP_FILES 8
39 static const char *tmp_files[MAX_TMP_FILES];
40 static unsigned int nb_tmp_files;
53 { "x86_64", CPU_x86_64 },
54 { "sparc", CPU_SPARC },
55 { "alpha", CPU_ALPHA },
56 { "powerpc", CPU_POWERPC }
59 /* atexit handler to clean tmp files */
60 static void cleanup_tmp_files(void)
63 for (i = 0; i < MAX_TMP_FILES; i++) if (tmp_files[i]) unlink( tmp_files[i] );
67 void *xmalloc (size_t size)
71 res = malloc (size ? size : 1);
74 fprintf (stderr, "Virtual memory exhausted.\n");
80 void *xrealloc (void *ptr, size_t size)
82 void *res = realloc (ptr, size);
83 if (size && res == NULL)
85 fprintf (stderr, "Virtual memory exhausted.\n");
91 char *xstrdup( const char *str )
93 char *res = strdup( str );
96 fprintf (stderr, "Virtual memory exhausted.\n");
102 char *strupper(char *s)
105 for (p = s; *p; p++) *p = toupper(*p);
109 int strendswith(const char* str, const char* end)
113 return l >= m && strcmp(str + l - m, end) == 0;
116 void fatal_error( const char *msg, ... )
119 va_start( valist, msg );
122 fprintf( stderr, "%s:", input_file_name );
124 fprintf( stderr, "%d:", current_line );
125 fputc( ' ', stderr );
127 else fprintf( stderr, "winebuild: " );
128 vfprintf( stderr, msg, valist );
133 void fatal_perror( const char *msg, ... )
136 va_start( valist, msg );
139 fprintf( stderr, "%s:", input_file_name );
141 fprintf( stderr, "%d:", current_line );
142 fputc( ' ', stderr );
144 vfprintf( stderr, msg, valist );
150 void error( const char *msg, ... )
153 va_start( valist, msg );
156 fprintf( stderr, "%s:", input_file_name );
158 fprintf( stderr, "%d:", current_line );
159 fputc( ' ', stderr );
161 vfprintf( stderr, msg, valist );
166 void warning( const char *msg, ... )
170 if (!display_warnings) return;
171 va_start( valist, msg );
174 fprintf( stderr, "%s:", input_file_name );
176 fprintf( stderr, "%d:", current_line );
177 fputc( ' ', stderr );
179 fprintf( stderr, "warning: " );
180 vfprintf( stderr, msg, valist );
184 int output( const char *format, ... )
189 va_start( valist, format );
190 ret = vfprintf( output_file, format, valist );
192 if (ret < 0) fatal_perror( "Output error" );
196 /* find a build tool in the path, trying the various names */
197 char *find_tool( const char * const *names )
200 static unsigned int count, maxlen;
210 /* split the path in directories */
212 if (!getenv( "PATH" )) return NULL;
213 path = xstrdup( getenv( "PATH" ));
214 for (p = path, count = 2; *p; p++) if (*p == ':') count++;
215 dirs = xmalloc( count * sizeof(*dirs) );
217 dirs[count++] = p = path;
220 while (*p && *p != ':') p++;
225 for (i = 0; i < count; i++) maxlen = max( maxlen, strlen(dirs[i])+2 );
230 len = strlen(*names) + 1;
231 file = xmalloc( maxlen + len );
233 for (i = 0; i < count; i++)
235 strcpy( file, dirs[i] );
236 p = file + strlen(file);
237 if (p == file) *p++ = '.';
238 if (p[-1] != '/') *p++ = '/';
241 if (!stat( file, &st ) && S_ISREG(st.st_mode) && (st.st_mode & 0111)) return file;
249 const char *get_as_command(void)
255 as_command = xmalloc( strlen(target_alias) + sizeof("-as") );
256 strcpy( as_command, target_alias );
257 strcat( as_command, "-as" );
261 static const char * const commands[] = { "gas", "as", NULL };
262 if (!(as_command = find_tool( commands ))) as_command = xstrdup("as");
265 if (force_pointer_size)
267 const char *args = (force_pointer_size == 8) ? " --64" : " --32";
268 as_command = xrealloc( as_command, strlen(as_command) + strlen(args) + 1 );
269 strcat( as_command, args );
275 const char *get_ld_command(void)
281 ld_command = xmalloc( strlen(target_alias) + sizeof("-ld") );
282 strcpy( ld_command, target_alias );
283 strcat( ld_command, "-ld" );
287 static const char * const commands[] = { "ld", "gld", NULL };
288 if (!(ld_command = find_tool( commands ))) ld_command = xstrdup("ld");
291 if (force_pointer_size)
293 const char *args = (force_pointer_size == 8) ? " -m elf_x86_64" : " -m elf_i386";
294 ld_command = xrealloc( ld_command, strlen(ld_command) + strlen(args) + 1 );
295 strcat( ld_command, args );
301 const char *get_nm_command(void)
307 nm_command = xmalloc( strlen(target_alias) + sizeof("-nm") );
308 strcpy( nm_command, target_alias );
309 strcat( nm_command, "-nm" );
313 static const char * const commands[] = { "nm", "gnm", NULL };
314 if (!(nm_command = find_tool( commands ))) nm_command = xstrdup("nm");
320 /* get a name for a temp file, automatically cleaned up on exit */
321 char *get_temp_file_name( const char *prefix, const char *suffix )
327 assert( nb_tmp_files < MAX_TMP_FILES );
328 if (!nb_tmp_files && !save_temps) atexit( cleanup_tmp_files );
330 if (!prefix || !prefix[0]) prefix = "winebuild";
331 if (!suffix) suffix = "";
332 if (!(ext = strchr( prefix, '.' ))) ext = prefix + strlen(prefix);
333 name = xmalloc( sizeof("/tmp/") + (ext - prefix) + sizeof(".XXXXXX") + strlen(suffix) );
334 strcpy( name, "/tmp/" );
335 memcpy( name + 5, prefix, ext - prefix );
336 strcpy( name + 5 + (ext - prefix), ".XXXXXX" );
337 strcat( name, suffix );
339 /* first try without the /tmp/ prefix */
340 if ((fd = mkstemps( name + 5, strlen(suffix) )) != -1)
342 else if ((fd = mkstemps( name, strlen(suffix) )) == -1)
343 fatal_error( "could not generate a temp file\n" );
346 tmp_files[nb_tmp_files++] = name;
350 /* output a standard header for generated files */
351 void output_standard_file_header(void)
354 output( "/* File generated automatically from %s; do not edit! */\n", spec_file_name );
356 output( "/* File generated automatically; do not edit! */\n" );
357 output( "/* This file can be copied, modified and distributed without restriction. */\n\n" );
360 /* dump a byte stream into the assembly code */
361 void dump_bytes( const void *buffer, unsigned int size )
364 const unsigned char *ptr = buffer;
367 output( "\t.byte " );
368 for (i = 0; i < size - 1; i++, ptr++)
370 if ((i % 16) == 15) output( "0x%02x\n\t.byte ", *ptr );
371 else output( "0x%02x,", *ptr );
373 output( "0x%02x\n", *ptr );
377 /*******************************************************************
380 * Open a file in the given srcdir and set the input_file_name global variable.
382 FILE *open_input_file( const char *srcdir, const char *name )
385 FILE *file = fopen( name, "r" );
389 fullname = xmalloc( strlen(srcdir) + strlen(name) + 2 );
390 strcpy( fullname, srcdir );
391 strcat( fullname, "/" );
392 strcat( fullname, name );
393 file = fopen( fullname, "r" );
395 else fullname = xstrdup( name );
397 if (!file) fatal_error( "Cannot open file '%s'\n", fullname );
398 input_file_name = fullname;
404 /*******************************************************************
407 * Close the current input file (must have been opened with open_input_file).
409 void close_input_file( FILE *file )
412 free( input_file_name );
413 input_file_name = NULL;
418 /*******************************************************************
419 * remove_stdcall_decoration
421 * Remove a possible @xx suffix from a function name.
422 * Return the numerical value of the suffix, or -1 if none.
424 int remove_stdcall_decoration( char *name )
426 char *p, *end = strrchr( name, '@' );
427 if (!end || !end[1] || end == name) return -1;
428 /* make sure all the rest is digits */
429 for (p = end + 1; *p; p++) if (!isdigit(*p)) return -1;
431 return atoi( end + 1 );
435 /*******************************************************************
438 * Run a file through the assembler.
440 void assemble_file( const char *src_file, const char *obj_file )
442 const char *prog = get_as_command();
446 cmd = xmalloc( strlen(prog) + strlen(obj_file) + strlen(src_file) + 6 );
447 sprintf( cmd, "%s -o %s %s", prog, obj_file, src_file );
448 if (verbose) fprintf( stderr, "%s\n", cmd );
450 if (err) fatal_error( "%s failed with status %d\n", prog, err );
455 /*******************************************************************
458 * Create a new dll spec file descriptor
460 DLLSPEC *alloc_dll_spec(void)
464 spec = xmalloc( sizeof(*spec) );
465 spec->file_name = NULL;
466 spec->dll_name = NULL;
467 spec->init_func = NULL;
468 spec->type = SPEC_WIN32;
469 spec->base = MAX_ORDINALS;
471 spec->stack_size = 0;
473 spec->nb_entry_points = 0;
474 spec->alloc_entry_points = 0;
476 spec->nb_resources = 0;
477 spec->characteristics = IMAGE_FILE_EXECUTABLE_IMAGE;
478 if (get_ptr_size() > 4)
479 spec->characteristics |= IMAGE_FILE_LARGE_ADDRESS_AWARE;
481 spec->characteristics |= IMAGE_FILE_32BIT_MACHINE;
482 spec->dll_characteristics = IMAGE_DLLCHARACTERISTICS_NX_COMPAT;
484 spec->subsystem_major = 4;
485 spec->subsystem_minor = 0;
486 spec->entry_points = NULL;
488 spec->ordinals = NULL;
489 spec->resources = NULL;
494 /*******************************************************************
497 * Free dll spec file descriptor
499 void free_dll_spec( DLLSPEC *spec )
503 for (i = 0; i < spec->nb_entry_points; i++)
505 ORDDEF *odp = &spec->entry_points[i];
507 free( odp->export_name );
508 free( odp->link_name );
510 free( spec->file_name );
511 free( spec->dll_name );
512 free( spec->init_func );
513 free( spec->entry_points );
515 free( spec->ordinals );
516 free( spec->resources );
521 /*******************************************************************
524 * Map a string to a valid C identifier.
526 const char *make_c_identifier( const char *str )
528 static char buffer[256];
531 for (p = buffer; *str && p < buffer+sizeof(buffer)-1; p++, str++)
533 if (isalnum(*str)) *p = *str;
541 /*******************************************************************
544 * Generate an internal name for a stub entry point.
546 const char *get_stub_name( const ORDDEF *odp, const DLLSPEC *spec )
548 static char buffer[256];
549 if (odp->name || odp->export_name)
552 sprintf( buffer, "__wine_stub_%s", odp->name ? odp->name : odp->export_name );
553 /* make sure name is a legal C identifier */
554 for (p = buffer; *p; p++) if (!isalnum(*p) && *p != '_') break;
555 if (!*p) return buffer;
557 sprintf( buffer, "__wine_stub_%s_%d", make_c_identifier(spec->file_name), odp->ordinal );
561 /* parse a cpu name and return the corresponding value */
562 enum target_cpu get_cpu_from_name( const char *name )
566 for (i = 0; i < sizeof(cpu_names)/sizeof(cpu_names[0]); i++)
567 if (!strcmp( cpu_names[i].name, name )) return cpu_names[i].cpu;
571 /*****************************************************************
572 * Function: get_alignment
575 * According to the info page for gas, the .align directive behaves
576 * differently on different systems. On some architectures, the
577 * argument of a .align directive is the number of bytes to pad to, so
578 * to align on an 8-byte boundary you'd say
580 * On other systems, the argument is "the number of low-order zero bits
581 * that the location counter must have after advancement." So to
582 * align on an 8-byte boundary you'd say
585 * The reason gas is written this way is that it's trying to mimick
586 * native assemblers for the various architectures it runs on. gas
587 * provides other directives that work consistently across
588 * architectures, but of course we want to work on all arches with or
589 * without gas. Hence this function.
593 * align -- the number of bytes to align to. Must be a power of 2.
595 unsigned int get_alignment(unsigned int align)
599 assert( !(align & (align - 1)) );
606 if (target_platform != PLATFORM_APPLE) return align;
611 while ((1u << n) != align) n++;
619 /* return the page size for the target CPU */
620 unsigned int get_page_size(void)
624 case CPU_x86: return 4096;
625 case CPU_x86_64: return 4096;
626 case CPU_POWERPC: return 4096;
627 case CPU_SPARC: return 8192;
628 case CPU_ALPHA: return 8192;
635 /* return the size of a pointer on the target CPU */
636 unsigned int get_ptr_size(void)
653 /* return the assembly name for a C symbol */
654 const char *asm_name( const char *sym )
656 static char buffer[256];
658 switch (target_platform)
661 case PLATFORM_WINDOWS:
663 strcpy( buffer + 1, sym );
670 /* return an assembly function declaration for a C function name */
671 const char *func_declaration( const char *func )
673 static char buffer[256];
675 switch (target_platform)
679 case PLATFORM_WINDOWS:
680 sprintf( buffer, ".def _%s; .scl 2; .type 32; .endef", func );
683 sprintf( buffer, ".type %s,@function", func );
689 /* output a size declaration for an assembly function */
690 void output_function_size( const char *name )
692 switch (target_platform)
695 case PLATFORM_WINDOWS:
698 output( "\t.size %s, .-%s\n", name, name );
703 /* output the GNU note for non-exec stack */
704 void output_gnu_stack_note(void)
706 switch (target_platform)
708 case PLATFORM_WINDOWS:
712 output( "\t.section .note.GNU-stack,\"\",@progbits\n" );
717 /* return a global symbol declaration for an assembly symbol */
718 const char *asm_globl( const char *func )
720 static char buffer[256];
722 switch (target_platform)
725 sprintf( buffer, "\t.globl _%s\n\t.private_extern _%s\n_%s:", func, func, func );
727 case PLATFORM_WINDOWS:
728 sprintf( buffer, "\t.globl _%s\n_%s:", func, func );
731 sprintf( buffer, "\t.globl %s\n\t.hidden %s\n%s:", func, func, func );
736 const char *get_asm_ptr_keyword(void)
738 switch(get_ptr_size())
740 case 4: return ".long";
741 case 8: return ".quad";
747 const char *get_asm_string_keyword(void)
749 switch (target_platform)
758 const char *get_asm_short_keyword(void)
760 switch (target_platform)
762 default: return ".short";
766 const char *get_asm_rodata_section(void)
768 switch (target_platform)
770 case PLATFORM_APPLE: return ".const";
771 default: return ".section .rodata";
775 const char *get_asm_string_section(void)
777 switch (target_platform)
779 case PLATFORM_APPLE: return ".cstring";
780 default: return ".section .rodata";