diff options
Diffstat (limited to 'tcc.c')
| -rw-r--r-- | tcc.c | 365 |
1 files changed, 365 insertions, 0 deletions
@@ -0,0 +1,365 @@ +/* + * TCC - Tiny C Compiler + * + * Copyright (c) 2001-2004 Fabrice Bellard + * + * 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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#ifdef ONE_SOURCE +#include "libtcc.c" +#else +#include "tcc.h" +#endif + +static void print_paths(const char *msg, char **paths, int nb_paths) +{ + int i; + printf("%s:\n%s", msg, nb_paths ? "" : " -\n"); + for(i = 0; i < nb_paths; i++) + printf(" %s\n", paths[i]); +} + +static void display_info(TCCState *s, int what) +{ + switch (what) { + case 0: + printf("tcc version %s (" +#ifdef TCC_TARGET_I386 + "i386" +#elif defined TCC_TARGET_X86_64 + "x86-64" +#elif defined TCC_TARGET_C67 + "C67" +#elif defined TCC_TARGET_ARM + "ARM" +# ifdef TCC_ARM_HARDFLOAT + " Hard Float" +# endif +#elif defined TCC_TARGET_ARM64 + "AArch64" +# ifdef TCC_ARM_HARDFLOAT + " Hard Float" +# endif +#endif +#ifdef TCC_TARGET_PE + " Windows" +#else + " Linux" +#endif + ")\n", TCC_VERSION); + break; + case 1: + printf("install: %s\n", s->tcc_lib_path); + /* print_paths("programs", NULL, 0); */ + print_paths("include", s->sysinclude_paths, s->nb_sysinclude_paths); + print_paths("libraries", s->library_paths, s->nb_library_paths); +#ifndef TCC_TARGET_PE + print_paths("crt", s->crt_paths, s->nb_crt_paths); + printf("elfinterp:\n %s\n", DEFAULT_ELFINTERP(s)); +#endif + break; + } +} + +static void help(void) +{ + printf("Tiny C Compiler "TCC_VERSION" - Copyright (C) 2001-2006 Fabrice Bellard\n" + "Usage: tcc [options...] [-o outfile] [-c] infile(s)...\n" + " tcc [options...] -run infile [arguments...]\n" + "General options:\n" + " -c compile only - generate an object file\n" + " -o outfile set output filename\n" + " -run run compiled source\n" + " -fflag set or reset (with 'no-' prefix) 'flag' (see man page)\n" + " -Wwarning set or reset (with 'no-' prefix) 'warning' (see man page)\n" + " -w disable all warnings\n" + " -v show version\n" + " -vv show included files (as sole argument: show search paths)\n" + " -dumpversion\n" + " -bench show compilation statistics\n" + "Preprocessor options:\n" + " -Idir add include path 'dir'\n" + " -Dsym[=val] define 'sym' with value 'val'\n" + " -Usym undefine 'sym'\n" + " -E preprocess only\n" + " -P[1] no/alternative output of #line directives with -E\n" + " -dD dump defines\n" + "Linker options:\n" + " -Ldir add library path 'dir'\n" + " -llib link with dynamic or static library 'lib'\n" + " -pthread link with -lpthread and -D_REENTRANT (POSIX Linux)\n" + " -r generate (relocatable) object file\n" + " -rdynamic export all global symbols to dynamic linker\n" + " -shared generate a shared library\n" + " -soname set name for shared library to be used at runtime\n" + " -static static linking\n" + " -Wl,-opt[=val] set linker option (see manual)\n" + "Debugger options:\n" + " -g generate runtime debug info\n" +#ifdef CONFIG_TCC_BCHECK + " -b compile with built-in memory and bounds checker (implies -g)\n" +#endif +#ifdef CONFIG_TCC_BACKTRACE + " -bt N show N callers in stack traces\n" +#endif + "Misc options:\n" + " -nostdinc do not use standard system include paths\n" + " -nostdlib do not link with standard crt and libraries\n" + " -Bdir use 'dir' as tcc internal library and include path\n" + " -MD generate target dependencies for make\n" + " -MF depfile put generated dependencies here\n" + ); +} + +/* re-execute the i386/x86_64 cross-compilers with tcc -m32/-m64: */ +#if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64 +#ifdef _WIN32 +#include <process.h> +static int execvp_win32(const char *prog, char **argv) +{ + int ret = spawnvp(P_NOWAIT, prog, (const char *const*)argv); + if (-1 == ret) + return ret; + cwait(&ret, ret, WAIT_CHILD); + exit(ret); +} +#define execvp execvp_win32 +#endif +static void exec_other_tcc(TCCState *s, char **argv, const char *optarg) +{ + char child_path[4096], *child_name; const char *target; + switch (atoi(optarg)) { +#ifdef TCC_TARGET_I386 + case 32: break; + case 64: target = "x86_64"; +#else + case 64: break; + case 32: target = "i386"; +#endif + pstrcpy(child_path, sizeof child_path - 40, argv[0]); + child_name = tcc_basename(child_path); + strcpy(child_name, target); +#ifdef TCC_TARGET_PE + strcat(child_name, "-win32"); +#endif + strcat(child_name, "-tcc"); + if (strcmp(argv[0], child_path)) { + if (s->verbose > 0) + printf("tcc: using '%s'\n", child_name), fflush(stdout); + execvp(argv[0] = child_path, argv); + } + tcc_error("'%s' not found", child_name); + case 0: /* ignore -march etc. */ + break; + default: + tcc_warning("unsupported option \"-m%s\"", optarg); + } +} +#else +#define exec_other_tcc(s, argv, optarg) +#endif + +static void gen_makedeps(TCCState *s, const char *target, const char *filename) +{ + FILE *depout; + char buf[1024], *ext; + int i; + + if (!filename) { + /* compute filename automatically + * dir/file.o -> dir/file.d */ + pstrcpy(buf, sizeof(buf), target); + ext = tcc_fileextension(buf); + pstrcpy(ext, sizeof(buf) - (ext-buf), ".d"); + filename = buf; + } + + if (s->verbose) + printf("<- %s\n", filename); + + /* XXX return err codes instead of error() ? */ + depout = fopen(filename, "w"); + if (!depout) + tcc_error("could not open '%s'", filename); + + fprintf(depout, "%s : \\\n", target); + for (i=0; i<s->nb_target_deps; ++i) + fprintf(depout, " %s \\\n", s->target_deps[i]); + fprintf(depout, "\n"); + fclose(depout); +} + +static char *default_outputfile(TCCState *s, const char *first_file) +{ + char buf[1024]; + char *ext; + const char *name = "a"; + + if (first_file && strcmp(first_file, "-")) + name = tcc_basename(first_file); + pstrcpy(buf, sizeof(buf), name); + ext = tcc_fileextension(buf); +#ifdef TCC_TARGET_PE + if (s->output_type == TCC_OUTPUT_DLL) + strcpy(ext, ".dll"); + else + if (s->output_type == TCC_OUTPUT_EXE) + strcpy(ext, ".exe"); + else +#endif + if (( (s->output_type == TCC_OUTPUT_OBJ && !s->option_r) || + (s->output_type == TCC_OUTPUT_PREPROCESS) ) + && *ext) + strcpy(ext, ".o"); + else + strcpy(buf, "a.out"); + + return tcc_strdup(buf); +} + +static int64_t getclock_us(void) +{ +#ifdef _WIN32 + struct _timeb tb; + _ftime(&tb); + return (tb.time * 1000LL + tb.millitm) * 1000LL; +#else + struct timeval tv; + gettimeofday(&tv, NULL); + return tv.tv_sec * 1000000LL + tv.tv_usec; +#endif +} + +int main(int argc, char **argv) +{ + TCCState *s; + int ret, optind, i; + int64_t start_time = 0; + + s = tcc_new(); + + optind = tcc_parse_args(s, argc - 1, argv + 1); + + if (s->do_bench) + start_time = getclock_us(); + + tcc_set_environment(s); + + if (optind == 0) { + help(); + return 1; + } + + if (s->option_m) + exec_other_tcc(s, argv, s->option_m); + + if (s->verbose) + display_info(s, 0); + + if (s->print_search_dirs || (s->verbose == 2 && optind == 1)) { + tcc_set_output_type(s, TCC_OUTPUT_MEMORY); + display_info(s, 1); + return 0; + } + + if (s->verbose && optind == 1) + return 0; + + if (s->nb_files == 0) + tcc_error("no input files\n"); + + /* check -c consistency : only single file handled. XXX: checks file type */ + if (s->output_type == TCC_OUTPUT_OBJ && !s->option_r) { + if (s->nb_libraries != 0) + tcc_error("cannot specify libraries with -c"); + /* accepts only a single input file */ + if ((s->nb_files != 1) && s->outfile) { + tcc_error("cannot specify multiple files with -c and -o"); + } + } + + if (s->output_type == TCC_OUTPUT_PREPROCESS) { + if (!s->outfile) { + s->ppfp = stdout; + } else { + s->ppfp = fopen(s->outfile, "w"); + if (!s->ppfp) + tcc_error("could not write '%s'", s->outfile); + } + } + + tcc_set_output_type(s, s->output_type); + + /* compile or add each files or library */ + for(i = ret = 0; i < s->nb_files && ret == 0; i++) { + int filetype = *(unsigned char *)s->files[i]; + const char *filename = s->files[i] + 1; + if (filename[0] == '-' && filename[1] == 'l') { + if (tcc_add_library(s, filename + 2) < 0) { + tcc_error_noabort("cannot find library 'lib%s'", filename+2); + ret = 1; + } + } else { + if (1 == s->verbose) + printf("-> %s\n", filename); + if (!s->outfile) + s->outfile = default_outputfile(s, filename); + if (tcc_add_file(s, filename, filetype) < 0) + ret = 1; + else + if (s->output_type == TCC_OUTPUT_OBJ) { + ret = !!tcc_output_file(s, s->outfile); + if (s->gen_deps && !ret) + gen_makedeps(s, s->outfile, s->deps_outfile); + if (!ret) { + if ((i+1) < s->nb_files) { + tcc_delete(s); + s = tcc_new(); + tcc_parse_args(s, argc - 1, argv + 1); + tcc_set_environment(s); + if (s->output_type != TCC_OUTPUT_OBJ) + tcc_error("interlnal error"); + tcc_set_output_type(s, s->output_type); + } + } + } + } + } + + if (0 == ret) { + if (s->output_type == TCC_OUTPUT_MEMORY) { +#ifdef TCC_IS_NATIVE + ret = tcc_run(s, argc - 1 - optind, argv + 1 + optind); +#else + tcc_error_noabort("-run is not available in a cross compiler"); + ret = 1; +#endif + } else + if (s->output_type == TCC_OUTPUT_EXE || + s->output_type == TCC_OUTPUT_DLL) + { + ret = !!tcc_output_file(s, s->outfile); + if (s->gen_deps && !ret) + gen_makedeps(s, s->outfile, s->deps_outfile); + } + } + + if (s->do_bench) + tcc_print_stats(s, getclock_us() - start_time); + + tcc_delete(s); + return ret; +} |