/* * Small utility functions for winebuild * * Copyright 2000 Alexandre Julliard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #include "config.h" #include "wine/port.h" #include #include #include #include #include #include #ifdef HAVE_UNISTD_H # include #endif #ifdef HAVE_SYS_STAT_H # include #endif #ifdef HAVE_SYS_MMAN_H #include #endif #include "build.h" static const char **tmp_files; static unsigned int nb_tmp_files; static unsigned int max_tmp_files; static const struct { const char *name; enum target_cpu cpu; } cpu_names[] = { { "i386", CPU_x86 }, { "i486", CPU_x86 }, { "i586", CPU_x86 }, { "i686", CPU_x86 }, { "i786", CPU_x86 }, { "amd64", CPU_x86_64 }, { "x86_64", CPU_x86_64 }, { "sparc", CPU_SPARC }, { "powerpc", CPU_POWERPC }, { "arm", CPU_ARM } }; /* atexit handler to clean tmp files */ static void cleanup_tmp_files(void) { unsigned int i; for (i = 0; i < nb_tmp_files; i++) if (tmp_files[i]) unlink( tmp_files[i] ); } 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; } void *xrealloc (void *ptr, size_t size) { void *res = realloc (ptr, size); if (size && res == NULL) { fprintf (stderr, "Virtual memory exhausted.\n"); exit (1); } return res; } char *xstrdup( const char *str ) { char *res = strdup( str ); if (!res) { fprintf (stderr, "Virtual memory exhausted.\n"); exit (1); } return res; } char *strupper(char *s) { char *p; for (p = s; *p; p++) *p = toupper(*p); return s; } int strendswith(const char* str, const char* end) { int l = strlen(str); int m = strlen(end); return l >= m && strcmp(str + l - m, end) == 0; } char *strmake( const char* fmt, ... ) { int n; size_t size = 100; va_list ap; for (;;) { char *p = xmalloc( size ); va_start( ap, fmt ); n = vsnprintf( p, size, fmt, ap ); va_end( ap ); if (n == -1) size *= 2; else if ((size_t)n >= size) size = n + 1; else return p; free( p ); } } struct strarray *strarray_init(void) { struct strarray *array = xmalloc( sizeof(*array) ); array->count = 0; array->max = 16; array->str = xmalloc( array->max * sizeof(*array->str) ); return array; } static void strarray_add_one( struct strarray *array, const char *str ) { if (array->count == array->max) { array->max *= 2; array->str = xrealloc( array->str, array->max * sizeof(*array->str) ); } array->str[array->count++] = str; } void strarray_add( struct strarray *array, ... ) { va_list valist; const char *str; va_start( valist, array ); while ((str = va_arg( valist, const char *))) strarray_add_one( array, str ); va_end( valist ); } void strarray_addv( struct strarray *array, char * const *argv ) { while (*argv) strarray_add_one( array, *argv++ ); } void strarray_free( struct strarray *array ) { free( array->str ); free( array ); } void fatal_error( const char *msg, ... ) { va_list valist; va_start( valist, msg ); if (input_file_name) { fprintf( stderr, "%s:", input_file_name ); if (current_line) fprintf( stderr, "%d:", current_line ); fputc( ' ', stderr ); } else fprintf( stderr, "winebuild: " ); vfprintf( stderr, msg, valist ); va_end( valist ); exit(1); } void fatal_perror( const char *msg, ... ) { va_list valist; va_start( valist, msg ); if (input_file_name) { fprintf( stderr, "%s:", input_file_name ); if (current_line) fprintf( stderr, "%d:", current_line ); fputc( ' ', stderr ); } vfprintf( stderr, msg, valist ); perror( " " ); va_end( valist ); exit(1); } void error( const char *msg, ... ) { va_list valist; va_start( valist, msg ); if (input_file_name) { fprintf( stderr, "%s:", input_file_name ); if (current_line) fprintf( stderr, "%d:", current_line ); fputc( ' ', stderr ); } vfprintf( stderr, msg, valist ); va_end( valist ); nb_errors++; } void warning( const char *msg, ... ) { va_list valist; if (!display_warnings) return; va_start( valist, msg ); if (input_file_name) { fprintf( stderr, "%s:", input_file_name ); if (current_line) fprintf( stderr, "%d:", current_line ); fputc( ' ', stderr ); } fprintf( stderr, "warning: " ); vfprintf( stderr, msg, valist ); va_end( valist ); } int output( const char *format, ... ) { int ret; va_list valist; va_start( valist, format ); ret = vfprintf( output_file, format, valist ); va_end( valist ); if (ret < 0) fatal_perror( "Output error" ); return ret; } void spawn( struct strarray *args ) { unsigned int i; int status; strarray_add_one( args, NULL ); if (verbose) for (i = 0; args->str[i]; i++) fprintf( stderr, "%s%c", args->str[i], args->str[i+1] ? ' ' : '\n' ); if ((status = spawnvp( _P_WAIT, args->str[0], args->str ))) { if (status > 0) fatal_error( "%s failed with status %u\n", args->str[0], status ); else fatal_perror( "winebuild" ); exit( 1 ); } } /* find a build tool in the path, trying the various names */ char *find_tool( const char *name, const char * const *names ) { static char **dirs; static unsigned int count, maxlen; char *p, *file; const char *alt_names[2]; unsigned int i, len; struct stat st; if (target_alias) return strmake( "%s-%s", target_alias, name ); if (!dirs) { char *path; /* split the path in directories */ if (!getenv( "PATH" )) return NULL; path = xstrdup( getenv( "PATH" )); for (p = path, count = 2; *p; p++) if (*p == ':') count++; dirs = xmalloc( count * sizeof(*dirs) ); count = 0; dirs[count++] = p = path; while (*p) { while (*p && *p != ':') p++; if (!*p) break; *p++ = 0; dirs[count++] = p; } for (i = 0; i < count; i++) maxlen = max( maxlen, strlen(dirs[i])+2 ); } if (!names) { alt_names[0] = name; alt_names[1] = NULL; names = alt_names; } while (*names) { len = strlen(*names) + sizeof(EXEEXT) + 1; file = xmalloc( maxlen + len ); for (i = 0; i < count; i++) { strcpy( file, dirs[i] ); p = file + strlen(file); if (p == file) *p++ = '.'; if (p[-1] != '/') *p++ = '/'; strcpy( p, *names ); strcat( p, EXEEXT ); if (!stat( file, &st ) && S_ISREG(st.st_mode) && (st.st_mode & 0111)) return file; } free( file ); names++; } return xstrdup( name ); } struct strarray *get_as_command(void) { struct strarray *args = strarray_init(); if (!as_command) { static const char * const commands[] = { "gas", "as", NULL }; as_command = find_tool( "as", commands ); } strarray_add_one( args, as_command ); if (force_pointer_size) { switch (target_platform) { case PLATFORM_APPLE: strarray_add( args, "-arch", (force_pointer_size == 8) ? "x86_64" : "i386", NULL ); break; default: strarray_add_one( args, (force_pointer_size == 8) ? "--64" : "--32" ); break; } } if (cpu_option) strarray_add_one( args, strmake("-mcpu=%s", cpu_option) ); return args; } struct strarray *get_ld_command(void) { struct strarray *args = strarray_init(); if (!ld_command) { static const char * const commands[] = { "ld", "gld", NULL }; ld_command = find_tool( "ld", commands ); } strarray_add_one( args, ld_command ); if (force_pointer_size) { switch (target_platform) { case PLATFORM_APPLE: strarray_add( args, "-arch", (force_pointer_size == 8) ? "x86_64" : "i386", NULL ); break; case PLATFORM_FREEBSD: strarray_add( args, "-m", (force_pointer_size == 8) ? "elf_x86_64_fbsd" : "elf_i386_fbsd", NULL ); break; default: strarray_add( args, "-m", (force_pointer_size == 8) ? "elf_x86_64" : "elf_i386", NULL ); break; } } return args; } const char *get_nm_command(void) { if (!nm_command) { static const char * const commands[] = { "nm", "gnm", NULL }; nm_command = find_tool( "nm", commands ); } return nm_command; } /* get a name for a temp file, automatically cleaned up on exit */ char *get_temp_file_name( const char *prefix, const char *suffix ) { char *name; const char *ext; int fd; if (!nb_tmp_files && !save_temps) atexit( cleanup_tmp_files ); if (!prefix || !prefix[0]) prefix = "winebuild"; if (!suffix) suffix = ""; if (!(ext = strchr( prefix, '.' ))) ext = prefix + strlen(prefix); name = xmalloc( sizeof("/tmp/") + (ext - prefix) + sizeof(".XXXXXX") + strlen(suffix) ); strcpy( name, "/tmp/" ); memcpy( name + 5, prefix, ext - prefix ); strcpy( name + 5 + (ext - prefix), ".XXXXXX" ); strcat( name, suffix ); /* first try without the /tmp/ prefix */ if ((fd = mkstemps( name + 5, strlen(suffix) )) != -1) name += 5; else if ((fd = mkstemps( name, strlen(suffix) )) == -1) fatal_error( "could not generate a temp file\n" ); close( fd ); if (nb_tmp_files >= max_tmp_files) { max_tmp_files = max( 2 * max_tmp_files, 8 ); tmp_files = xrealloc( tmp_files, max_tmp_files * sizeof(tmp_files[0]) ); } tmp_files[nb_tmp_files++] = name; return name; } /******************************************************************* * buffer management * * Function for reading from/writing to a memory buffer. */ int byte_swapped = 0; const char *input_buffer_filename; const unsigned char *input_buffer; size_t input_buffer_pos; size_t input_buffer_size; unsigned char *output_buffer; size_t output_buffer_pos; size_t output_buffer_size; static void check_output_buffer_space( size_t size ) { if (output_buffer_pos + size >= output_buffer_size) { output_buffer_size = max( output_buffer_size * 2, output_buffer_pos + size ); output_buffer = xrealloc( output_buffer, output_buffer_size ); } } void init_input_buffer( const char *file ) { int fd; struct stat st; if ((fd = open( file, O_RDONLY | O_BINARY )) == -1) fatal_perror( "Cannot open %s", file ); if ((fstat( fd, &st ) == -1)) fatal_perror( "Cannot stat %s", file ); if (!st.st_size) fatal_error( "%s is an empty file\n", file ); #ifdef HAVE_MMAP if ((input_buffer = mmap( NULL, st.st_size, PROT_READ, MAP_PRIVATE, fd, 0 )) == (void*)-1) #endif { unsigned char *buffer = xmalloc( st.st_size ); if (read( fd, buffer, st.st_size ) != st.st_size) fatal_error( "Cannot read %s\n", file ); input_buffer = buffer; } close( fd ); input_buffer_filename = xstrdup( file ); input_buffer_size = st.st_size; input_buffer_pos = 0; byte_swapped = 0; } void init_output_buffer(void) { output_buffer_size = 1024; output_buffer_pos = 0; output_buffer = xmalloc( output_buffer_size ); } void flush_output_buffer(void) { if (fwrite( output_buffer, 1, output_buffer_pos, output_file ) != output_buffer_pos) fatal_error( "Error writing to %s\n", output_file_name ); free( output_buffer ); } unsigned char get_byte(void) { if (input_buffer_pos >= input_buffer_size) fatal_error( "%s is a truncated file\n", input_buffer_filename ); return input_buffer[input_buffer_pos++]; } unsigned short get_word(void) { unsigned short ret; if (input_buffer_pos + sizeof(ret) > input_buffer_size) fatal_error( "%s is a truncated file\n", input_buffer_filename ); memcpy( &ret, input_buffer + input_buffer_pos, sizeof(ret) ); if (byte_swapped) ret = (ret << 8) | (ret >> 8); input_buffer_pos += sizeof(ret); return ret; } unsigned int get_dword(void) { unsigned int ret; if (input_buffer_pos + sizeof(ret) > input_buffer_size) fatal_error( "%s is a truncated file\n", input_buffer_filename ); memcpy( &ret, input_buffer + input_buffer_pos, sizeof(ret) ); if (byte_swapped) ret = ((ret << 24) | ((ret << 8) & 0x00ff0000) | ((ret >> 8) & 0x0000ff00) | (ret >> 24)); input_buffer_pos += sizeof(ret); return ret; } void put_data( const void *data, size_t size ) { check_output_buffer_space( size ); memcpy( output_buffer + output_buffer_pos, data, size ); output_buffer_pos += size; } void put_byte( unsigned char val ) { check_output_buffer_space( 1 ); output_buffer[output_buffer_pos++] = val; } void put_word( unsigned short val ) { if (byte_swapped) val = (val << 8) | (val >> 8); put_data( &val, sizeof(val) ); } void put_dword( unsigned int val ) { if (byte_swapped) val = ((val << 24) | ((val << 8) & 0x00ff0000) | ((val >> 8) & 0x0000ff00) | (val >> 24)); put_data( &val, sizeof(val) ); } void put_qword( unsigned int val ) { if (byte_swapped) { put_dword( 0 ); put_dword( val ); } else { put_dword( val ); put_dword( 0 ); } } /* pointer-sized word */ void put_pword( unsigned int val ) { if (get_ptr_size() == 8) put_qword( val ); else put_dword( val ); } void align_output( unsigned int align ) { size_t size = align - (output_buffer_pos % align); if (size == align) return; check_output_buffer_space( size ); memset( output_buffer + output_buffer_pos, 0, size ); output_buffer_pos += size; } /* output a standard header for generated files */ void output_standard_file_header(void) { if (spec_file_name) output( "/* File generated automatically from %s; do not edit! */\n", spec_file_name ); else output( "/* File generated automatically; do not edit! */\n" ); output( "/* This file can be copied, modified and distributed without restriction. */\n\n" ); } /* dump a byte stream into the assembly code */ void dump_bytes( const void *buffer, unsigned int size ) { unsigned int i; const unsigned char *ptr = buffer; if (!size) return; output( "\t.byte " ); for (i = 0; i < size - 1; i++, ptr++) { if ((i % 16) == 15) output( "0x%02x\n\t.byte ", *ptr ); else output( "0x%02x,", *ptr ); } output( "0x%02x\n", *ptr ); } /******************************************************************* * open_input_file * * Open a file in the given srcdir and set the input_file_name global variable. */ FILE *open_input_file( const char *srcdir, const char *name ) { char *fullname; FILE *file = fopen( name, "r" ); if (!file && srcdir) { fullname = strmake( "%s/%s", srcdir, name ); file = fopen( fullname, "r" ); } else fullname = xstrdup( name ); if (!file) fatal_error( "Cannot open file '%s'\n", fullname ); input_file_name = fullname; current_line = 1; return file; } /******************************************************************* * close_input_file * * Close the current input file (must have been opened with open_input_file). */ void close_input_file( FILE *file ) { fclose( file ); free( input_file_name ); input_file_name = NULL; current_line = 0; } /******************************************************************* * remove_stdcall_decoration * * Remove a possible @xx suffix from a function name. * Return the numerical value of the suffix, or -1 if none. */ int remove_stdcall_decoration( char *name ) { char *p, *end = strrchr( name, '@' ); if (!end || !end[1] || end == name) return -1; if (target_cpu != CPU_x86) return -1; /* make sure all the rest is digits */ for (p = end + 1; *p; p++) if (!isdigit(*p)) return -1; *end = 0; return atoi( end + 1 ); } /******************************************************************* * assemble_file * * Run a file through the assembler. */ void assemble_file( const char *src_file, const char *obj_file ) { struct strarray *args = get_as_command(); strarray_add( args, "-o", obj_file, src_file, NULL ); spawn( args ); strarray_free( args ); } /******************************************************************* * alloc_dll_spec * * Create a new dll spec file descriptor */ DLLSPEC *alloc_dll_spec(void) { DLLSPEC *spec; spec = xmalloc( sizeof(*spec) ); spec->file_name = NULL; spec->dll_name = NULL; spec->init_func = NULL; spec->main_module = NULL; spec->type = SPEC_WIN32; spec->base = MAX_ORDINALS; spec->limit = 0; spec->stack_size = 0; spec->heap_size = 0; spec->nb_entry_points = 0; spec->alloc_entry_points = 0; spec->nb_names = 0; spec->nb_resources = 0; spec->characteristics = IMAGE_FILE_EXECUTABLE_IMAGE; if (get_ptr_size() > 4) spec->characteristics |= IMAGE_FILE_LARGE_ADDRESS_AWARE; else spec->characteristics |= IMAGE_FILE_32BIT_MACHINE; spec->dll_characteristics = IMAGE_DLLCHARACTERISTICS_NX_COMPAT; spec->subsystem = 0; spec->subsystem_major = 4; spec->subsystem_minor = 0; spec->entry_points = NULL; spec->names = NULL; spec->ordinals = NULL; spec->resources = NULL; return spec; } /******************************************************************* * free_dll_spec * * Free dll spec file descriptor */ void free_dll_spec( DLLSPEC *spec ) { int i; for (i = 0; i < spec->nb_entry_points; i++) { ORDDEF *odp = &spec->entry_points[i]; free( odp->name ); free( odp->export_name ); free( odp->link_name ); } free( spec->file_name ); free( spec->dll_name ); free( spec->init_func ); free( spec->entry_points ); free( spec->names ); free( spec->ordinals ); free( spec->resources ); free( spec ); } /******************************************************************* * make_c_identifier * * Map a string to a valid C identifier. */ const char *make_c_identifier( const char *str ) { static char buffer[256]; char *p; for (p = buffer; *str && p < buffer+sizeof(buffer)-1; p++, str++) { if (isalnum(*str)) *p = *str; else *p = '_'; } *p = 0; return buffer; } /******************************************************************* * get_stub_name * * Generate an internal name for a stub entry point. */ const char *get_stub_name( const ORDDEF *odp, const DLLSPEC *spec ) { static char *buffer; free( buffer ); if (odp->name || odp->export_name) { char *p; buffer = strmake( "__wine_stub_%s", odp->name ? odp->name : odp->export_name ); /* make sure name is a legal C identifier */ for (p = buffer; *p; p++) if (!isalnum(*p) && *p != '_') break; if (!*p) return buffer; free( buffer ); } buffer = strmake( "__wine_stub_%s_%d", make_c_identifier(spec->file_name), odp->ordinal ); return buffer; } /* parse a cpu name and return the corresponding value */ enum target_cpu get_cpu_from_name( const char *name ) { unsigned int i; for (i = 0; i < sizeof(cpu_names)/sizeof(cpu_names[0]); i++) if (!strcmp( cpu_names[i].name, name )) return cpu_names[i].cpu; return -1; } /***************************************************************** * Function: get_alignment * * Description: * According to the info page for gas, the .align directive behaves * differently on different systems. On some architectures, the * argument of a .align directive is the number of bytes to pad to, so * to align on an 8-byte boundary you'd say * .align 8 * On other systems, the argument is "the number of low-order zero bits * that the location counter must have after advancement." So to * align on an 8-byte boundary you'd say * .align 3 * * The reason gas is written this way is that it's trying to mimick * native assemblers for the various architectures it runs on. gas * provides other directives that work consistently across * architectures, but of course we want to work on all arches with or * without gas. Hence this function. * * * Parameters: * align -- the number of bytes to align to. Must be a power of 2. */ unsigned int get_alignment(unsigned int align) { unsigned int n; assert( !(align & (align - 1)) ); switch(target_cpu) { case CPU_x86: case CPU_x86_64: case CPU_SPARC: if (target_platform != PLATFORM_APPLE) return align; /* fall through */ case CPU_POWERPC: case CPU_ARM: n = 0; while ((1u << n) != align) n++; return n; } /* unreached */ assert(0); return 0; } /* return the page size for the target CPU */ unsigned int get_page_size(void) { switch(target_cpu) { case CPU_x86: return 4096; case CPU_x86_64: return 4096; case CPU_POWERPC: return 4096; case CPU_ARM: return 4096; case CPU_SPARC: return 8192; } /* unreached */ assert(0); return 0; } /* return the size of a pointer on the target CPU */ unsigned int get_ptr_size(void) { switch(target_cpu) { case CPU_x86: case CPU_POWERPC: case CPU_SPARC: case CPU_ARM: return 4; case CPU_x86_64: return 8; } /* unreached */ assert(0); return 0; } /* return the total size in bytes of the arguments on the stack */ unsigned int get_args_size( const ORDDEF *odp ) { int i, size; for (i = size = 0; i < odp->u.func.nb_args; i++) { switch (odp->u.func.args[i]) { case ARG_INT64: case ARG_DOUBLE: size += 8; break; case ARG_INT128: /* int128 is passed as pointer on x86_64 */ if (target_cpu != CPU_x86_64) { size += 16; break; } /* fall through */ default: size += get_ptr_size(); break; } } return size; } /* return the assembly name for a C symbol */ const char *asm_name( const char *sym ) { static char *buffer; switch (target_platform) { case PLATFORM_APPLE: case PLATFORM_WINDOWS: if (sym[0] == '.' && sym[1] == 'L') return sym; free( buffer ); buffer = strmake( "_%s", sym ); return buffer; default: return sym; } } /* return an assembly function declaration for a C function name */ const char *func_declaration( const char *func ) { static char *buffer; switch (target_platform) { case PLATFORM_APPLE: return ""; case PLATFORM_WINDOWS: free( buffer ); buffer = strmake( ".def _%s; .scl 2; .type 32; .endef", func ); break; default: free( buffer ); switch(target_cpu) { case CPU_ARM: buffer = strmake( ".type %s,%%function", func ); break; default: buffer = strmake( ".type %s,@function", func ); break; } break; } return buffer; } /* output a size declaration for an assembly function */ void output_function_size( const char *name ) { switch (target_platform) { case PLATFORM_APPLE: case PLATFORM_WINDOWS: break; default: output( "\t.size %s, .-%s\n", name, name ); break; } } /* output a .cfi directive */ void output_cfi( const char *format, ... ) { va_list valist; if (!unwind_tables) return; va_start( valist, format ); fputc( '\t', output_file ); vfprintf( output_file, format, valist ); fputc( '\n', output_file ); va_end( valist ); } /* output the GNU note for non-exec stack */ void output_gnu_stack_note(void) { switch (target_platform) { case PLATFORM_WINDOWS: case PLATFORM_APPLE: break; default: switch(target_cpu) { case CPU_ARM: output( "\t.section .note.GNU-stack,\"\",%%progbits\n" ); break; default: output( "\t.section .note.GNU-stack,\"\",@progbits\n" ); break; } break; } } /* return a global symbol declaration for an assembly symbol */ const char *asm_globl( const char *func ) { static char *buffer; free( buffer ); switch (target_platform) { case PLATFORM_APPLE: buffer = strmake( "\t.globl _%s\n\t.private_extern _%s\n_%s:", func, func, func ); break; case PLATFORM_WINDOWS: buffer = strmake( "\t.globl _%s\n_%s:", func, func ); break; default: buffer = strmake( "\t.globl %s\n\t.hidden %s\n%s:", func, func, func ); break; } return buffer; } const char *get_asm_ptr_keyword(void) { switch(get_ptr_size()) { case 4: return ".long"; case 8: return ".quad"; } assert(0); return NULL; } const char *get_asm_string_keyword(void) { switch (target_platform) { case PLATFORM_APPLE: return ".asciz"; default: return ".string"; } } const char *get_asm_short_keyword(void) { switch (target_platform) { default: return ".short"; } } const char *get_asm_rodata_section(void) { switch (target_platform) { case PLATFORM_APPLE: return ".const"; default: return ".section .rodata"; } } const char *get_asm_string_section(void) { switch (target_platform) { case PLATFORM_APPLE: return ".cstring"; default: return ".section .rodata"; } }