/* * 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 */ #include "tcc.h" /********************************************************/ /* global variables */ /* use GNU C extensions */ ST_DATA int gnu_ext = 1; /* use TinyCC extensions */ ST_DATA int tcc_ext = 1; /* XXX: get rid of this ASAP */ ST_DATA struct TCCState *tcc_state; #ifdef CONFIG_TCC_BACKTRACE ST_DATA int num_callers = 6; ST_DATA const char **rt_bound_error_msg; ST_DATA void *rt_prog_main; #endif /********************************************************/ #ifndef NOTALLINONE #include "tccpp.c" #include "tccgen.c" #include "tccelf.c" #include "tccrun.c" #ifdef TCC_TARGET_I386 #include "i386-gen.c" #endif #ifdef TCC_TARGET_ARM #include "arm-gen.c" #endif #ifdef TCC_TARGET_C67 #include "c67-gen.c" #endif #ifdef TCC_TARGET_X86_64 #include "x86_64-gen.c" #endif #ifdef CONFIG_TCC_ASM #include "tccasm.c" #if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64 #include "i386-asm.c" #endif #endif #ifdef TCC_TARGET_COFF #include "tcccoff.c" #endif #ifdef TCC_TARGET_PE #include "tccpe.c" #endif #endif /* ALL_IN_ONE */ /********************************************************/ #ifndef CONFIG_TCC_ASM ST_FUNC void asm_instr(void) { error("inline asm() not supported"); } ST_FUNC void asm_global_instr(void) { error("inline asm() not supported"); } #endif /********************************************************/ #ifdef _WIN32 static char *normalize_slashes(char *path) { char *p; for (p = path; *p; ++p) if (*p == '\\') *p = '/'; return path; } static HMODULE tcc_module; /* on win32, we suppose the lib and includes are at the location of 'tcc.exe' */ static void tcc_set_lib_path_w32(TCCState *s) { char path[1024], *p; GetModuleFileNameA(tcc_module, path, sizeof path); p = tcc_basename(normalize_slashes(strlwr(path))); if (p - 5 > path && 0 == strncmp(p - 5, "/bin/", 5)) p -= 5; else if (p > path) p--; *p = 0; tcc_set_lib_path(s, path); } #ifndef CONFIG_TCC_STATIC void dlclose(void *p) { FreeLibrary((HMODULE)p); } #endif #ifdef LIBTCC_AS_DLL BOOL WINAPI DllMain (HANDLE hDll, DWORD dwReason, LPVOID lpReserved) { if (DLL_PROCESS_ATTACH == dwReason) tcc_module = hDll; return TRUE; } #endif #endif /********************************************************/ /* copy a string and truncate it. */ PUB_FUNC char *pstrcpy(char *buf, int buf_size, const char *s) { char *q, *q_end; int c; if (buf_size > 0) { q = buf; q_end = buf + buf_size - 1; while (q < q_end) { c = *s++; if (c == '\0') break; *q++ = c; } *q = '\0'; } return buf; } /* strcat and truncate. */ PUB_FUNC char *pstrcat(char *buf, int buf_size, const char *s) { int len; len = strlen(buf); if (len < buf_size) pstrcpy(buf + len, buf_size - len, s); return buf; } /* extract the basename of a file */ PUB_FUNC char *tcc_basename(const char *name) { char *p = strchr(name, 0); while (p > name && !IS_PATHSEP(p[-1])) --p; return p; } /* extract extension part of a file * * (if no extension, return pointer to end-of-string) */ PUB_FUNC char *tcc_fileextension (const char *name) { char *b = tcc_basename(name); char *e = strrchr(b, '.'); return e ? e : strchr(b, 0); } /********************************************************/ /* memory management */ #undef free #undef malloc #undef realloc #ifdef MEM_DEBUG int mem_cur_size; int mem_max_size; unsigned malloc_usable_size(void*); #endif PUB_FUNC void tcc_free(void *ptr) { #ifdef MEM_DEBUG mem_cur_size -= malloc_usable_size(ptr); #endif free(ptr); } PUB_FUNC void *tcc_malloc(unsigned long size) { void *ptr; ptr = malloc(size); if (!ptr && size) error("memory full"); #ifdef MEM_DEBUG mem_cur_size += malloc_usable_size(ptr); if (mem_cur_size > mem_max_size) mem_max_size = mem_cur_size; #endif return ptr; } PUB_FUNC void *tcc_mallocz(unsigned long size) { void *ptr; ptr = tcc_malloc(size); memset(ptr, 0, size); return ptr; } PUB_FUNC void *tcc_realloc(void *ptr, unsigned long size) { void *ptr1; #ifdef MEM_DEBUG mem_cur_size -= malloc_usable_size(ptr); #endif ptr1 = realloc(ptr, size); #ifdef MEM_DEBUG /* NOTE: count not correct if alloc error, but not critical */ mem_cur_size += malloc_usable_size(ptr1); if (mem_cur_size > mem_max_size) mem_max_size = mem_cur_size; #endif return ptr1; } PUB_FUNC char *tcc_strdup(const char *str) { char *ptr; ptr = tcc_malloc(strlen(str) + 1); strcpy(ptr, str); return ptr; } PUB_FUNC void tcc_memstats(void) { #ifdef MEM_DEBUG printf("memory in use: %d\n", mem_cur_size); #endif } #define free(p) use_tcc_free(p) #define malloc(s) use_tcc_malloc(s) #define realloc(p, s) use_tcc_realloc(p, s) /********************************************************/ /* dynarrays */ PUB_FUNC void dynarray_add(void ***ptab, int *nb_ptr, void *data) { int nb, nb_alloc; void **pp; nb = *nb_ptr; pp = *ptab; /* every power of two we double array size */ if ((nb & (nb - 1)) == 0) { if (!nb) nb_alloc = 1; else nb_alloc = nb * 2; pp = tcc_realloc(pp, nb_alloc * sizeof(void *)); if (!pp) error("memory full"); *ptab = pp; } pp[nb++] = data; *nb_ptr = nb; } PUB_FUNC void dynarray_reset(void *pp, int *n) { void **p; for (p = *(void***)pp; *n; ++p, --*n) if (*p) tcc_free(*p); tcc_free(*(void**)pp); *(void**)pp = NULL; } /* we use our own 'finite' function to avoid potential problems with non standard math libs */ /* XXX: endianness dependent */ ST_FUNC int ieee_finite(double d) { int *p = (int *)&d; return ((unsigned)((p[1] | 0x800fffff) + 1)) >> 31; } /********************************************************/ ST_FUNC Section *new_section(TCCState *s1, const char *name, int sh_type, int sh_flags) { Section *sec; sec = tcc_mallocz(sizeof(Section) + strlen(name)); strcpy(sec->name, name); sec->sh_type = sh_type; sec->sh_flags = sh_flags; switch(sh_type) { case SHT_HASH: case SHT_REL: case SHT_RELA: case SHT_DYNSYM: case SHT_SYMTAB: case SHT_DYNAMIC: sec->sh_addralign = 4; break; case SHT_STRTAB: sec->sh_addralign = 1; break; default: sec->sh_addralign = 32; /* default conservative alignment */ break; } if (sh_flags & SHF_PRIVATE) { dynarray_add((void ***)&s1->priv_sections, &s1->nb_priv_sections, sec); } else { sec->sh_num = s1->nb_sections; dynarray_add((void ***)&s1->sections, &s1->nb_sections, sec); } return sec; } static void free_section(Section *s) { tcc_free(s->data); } /* realloc section and set its content to zero */ ST_FUNC void section_realloc(Section *sec, unsigned long new_size) { unsigned long size; unsigned char *data; size = sec->data_allocated; if (size == 0) size = 1; while (size < new_size) size = size * 2; data = tcc_realloc(sec->data, size); if (!data) error("memory full"); memset(data + sec->data_allocated, 0, size - sec->data_allocated); sec->data = data; sec->data_allocated = size; } /* reserve at least 'size' bytes in section 'sec' from sec->data_offset. */ ST_FUNC void *section_ptr_add(Section *sec, unsigned long size) { unsigned long offset, offset1; offset = sec->data_offset; offset1 = offset + size; if (offset1 > sec->data_allocated) section_realloc(sec, offset1); sec->data_offset = offset1; return sec->data + offset; } /* reserve at least 'size' bytes from section start */ ST_FUNC void section_reserve(Section *sec, unsigned long size) { if (size > sec->data_allocated) section_realloc(sec, size); if (size > sec->data_offset) sec->data_offset = size; } /* return a reference to a section, and create it if it does not exists */ ST_FUNC Section *find_section(TCCState *s1, const char *name) { Section *sec; int i; for(i = 1; i < s1->nb_sections; i++) { sec = s1->sections[i]; if (!strcmp(name, sec->name)) return sec; } /* sections are created as PROGBITS */ return new_section(s1, name, SHT_PROGBITS, SHF_ALLOC); } /* update sym->c so that it points to an external symbol in section 'section' with value 'value' */ ST_FUNC void put_extern_sym2(Sym *sym, Section *section, unsigned long value, unsigned long size, int can_add_underscore) { int sym_type, sym_bind, sh_num, info, other; ElfW(Sym) *esym; const char *name; char buf1[256]; if (section == NULL) sh_num = SHN_UNDEF; else if (section == SECTION_ABS) sh_num = SHN_ABS; else sh_num = section->sh_num; if ((sym->type.t & VT_BTYPE) == VT_FUNC) { sym_type = STT_FUNC; } else if ((sym->type.t & VT_BTYPE) == VT_VOID) { sym_type = STT_NOTYPE; } else { sym_type = STT_OBJECT; } if (sym->type.t & VT_STATIC) sym_bind = STB_LOCAL; else { if (sym_type == STT_FUNC && sym->type.ref && FUNC_WEAK(sym->type.ref->r)) sym_bind = STB_WEAK; else sym_bind = STB_GLOBAL; } if (!sym->c) { name = get_tok_str(sym->v, NULL); #ifdef CONFIG_TCC_BCHECK if (tcc_state->do_bounds_check) { char buf[32]; /* XXX: avoid doing that for statics ? */ /* if bound checking is activated, we change some function names by adding the "__bound" prefix */ switch(sym->v) { #ifdef TCC_TARGET_PE /* XXX: we rely only on malloc hooks */ case TOK_malloc: case TOK_free: case TOK_realloc: case TOK_memalign: case TOK_calloc: #endif case TOK_memcpy: case TOK_memmove: case TOK_memset: case TOK_strlen: case TOK_strcpy: case TOK_alloca: strcpy(buf, "__bound_"); strcat(buf, name); name = buf; break; } } #endif other = 0; #ifdef TCC_TARGET_PE if (sym->type.t & VT_EXPORT) other |= 1; if (sym_type == STT_FUNC && sym->type.ref) { int attr = sym->type.ref->r; if (FUNC_EXPORT(attr)) other |= 1; if (FUNC_CALL(attr) == FUNC_STDCALL && can_add_underscore) { sprintf(buf1, "_%s@%d", name, FUNC_ARGS(attr) * PTR_SIZE); name = buf1; other |= 2; can_add_underscore = 0; } } else { if (find_elf_sym(tcc_state->dynsymtab_section, name)) other |= 4; if (sym->type.t & VT_IMPORT) other |= 4; } #endif if (tcc_state->leading_underscore && can_add_underscore) { buf1[0] = '_'; pstrcpy(buf1 + 1, sizeof(buf1) - 1, name); name = buf1; } info = ELFW(ST_INFO)(sym_bind, sym_type); sym->c = add_elf_sym(symtab_section, value, size, info, other, sh_num, name); } else { esym = &((ElfW(Sym) *)symtab_section->data)[sym->c]; esym->st_value = value; esym->st_size = size; esym->st_shndx = sh_num; } } ST_FUNC void put_extern_sym(Sym *sym, Section *section, unsigned long value, unsigned long size) { put_extern_sym2(sym, section, value, size, 1); } /* add a new relocation entry to symbol 'sym' in section 's' */ ST_FUNC void greloc(Section *s, Sym *sym, unsigned long offset, int type) { int c = 0; if (sym) { if (0 == sym->c) put_extern_sym(sym, NULL, 0, 0); c = sym->c; } /* now we can add ELF relocation info */ put_elf_reloc(symtab_section, s, offset, type, c); } /********************************************************/ static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap) { int len; len = strlen(buf); vsnprintf(buf + len, buf_size - len, fmt, ap); } static void strcat_printf(char *buf, int buf_size, const char *fmt, ...) { va_list ap; va_start(ap, fmt); strcat_vprintf(buf, buf_size, fmt, ap); va_end(ap); } static void error1(TCCState *s1, int is_warning, const char *fmt, va_list ap) { char buf[2048]; BufferedFile **f; buf[0] = '\0'; if (file) { for(f = s1->include_stack; f < s1->include_stack_ptr; f++) strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n", (*f)->filename, (*f)->line_num); if (file->line_num > 0) { strcat_printf(buf, sizeof(buf), "%s:%d: ", file->filename, file->line_num); } else { strcat_printf(buf, sizeof(buf), "%s: ", file->filename); } } else { strcat_printf(buf, sizeof(buf), "tcc: "); } if (is_warning) strcat_printf(buf, sizeof(buf), "warning: "); else strcat_printf(buf, sizeof(buf), "error: "); strcat_vprintf(buf, sizeof(buf), fmt, ap); if (!s1->error_func) { /* default case: stderr */ fprintf(stderr, "%s\n", buf); } else { s1->error_func(s1->error_opaque, buf); } if (!is_warning || s1->warn_error) s1->nb_errors++; } LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque, void (*error_func)(void *opaque, const char *msg)) { s->error_opaque = error_opaque; s->error_func = error_func; } /* error without aborting current compilation */ PUB_FUNC void error_noabort(const char *fmt, ...) { TCCState *s1 = tcc_state; va_list ap; va_start(ap, fmt); error1(s1, 0, fmt, ap); va_end(ap); } PUB_FUNC void error(const char *fmt, ...) { TCCState *s1 = tcc_state; va_list ap; va_start(ap, fmt); error1(s1, 0, fmt, ap); va_end(ap); /* better than nothing: in some cases, we accept to handle errors */ if (s1->error_set_jmp_enabled) { longjmp(s1->error_jmp_buf, 1); } else { /* XXX: eliminate this someday */ exit(1); } } PUB_FUNC void expect(const char *msg) { error("%s expected", msg); } PUB_FUNC void warning(const char *fmt, ...) { TCCState *s1 = tcc_state; va_list ap; if (s1->warn_none) return; va_start(ap, fmt); error1(s1, 1, fmt, ap); va_end(ap); } /********************************************************/ /* I/O layer */ ST_FUNC BufferedFile *tcc_open(TCCState *s1, const char *filename) { int fd; BufferedFile *bf; if (strcmp(filename, "-") == 0) fd = 0, filename = "stdin"; else fd = open(filename, O_RDONLY | O_BINARY); if ((s1->verbose == 2 && fd >= 0) || s1->verbose == 3) printf("%s %*s%s\n", fd < 0 ? "nf":"->", (int)(s1->include_stack_ptr - s1->include_stack), "", filename); if (fd < 0) return NULL; bf = tcc_malloc(sizeof(BufferedFile)); bf->fd = fd; bf->buf_ptr = bf->buffer; bf->buf_end = bf->buffer; bf->buffer[0] = CH_EOB; /* put eob symbol */ pstrcpy(bf->filename, sizeof(bf->filename), filename); #ifdef _WIN32 normalize_slashes(bf->filename); #endif bf->line_num = 1; bf->ifndef_macro = 0; bf->ifdef_stack_ptr = s1->ifdef_stack_ptr; // printf("opening '%s'\n", filename); return bf; } ST_FUNC void tcc_close(BufferedFile *bf) { total_lines += bf->line_num; close(bf->fd); tcc_free(bf); } /* compile the C file opened in 'file'. Return non zero if errors. */ static int tcc_compile(TCCState *s1) { Sym *define_start; char buf[512]; volatile int section_sym; #ifdef INC_DEBUG printf("%s: **** new file\n", file->filename); #endif preprocess_init(s1); cur_text_section = NULL; funcname = ""; anon_sym = SYM_FIRST_ANOM; /* file info: full path + filename */ section_sym = 0; /* avoid warning */ if (s1->do_debug) { section_sym = put_elf_sym(symtab_section, 0, 0, ELFW(ST_INFO)(STB_LOCAL, STT_SECTION), 0, text_section->sh_num, NULL); getcwd(buf, sizeof(buf)); #ifdef _WIN32 normalize_slashes(buf); #endif pstrcat(buf, sizeof(buf), "/"); put_stabs_r(buf, N_SO, 0, 0, text_section->data_offset, text_section, section_sym); put_stabs_r(file->filename, N_SO, 0, 0, text_section->data_offset, text_section, section_sym); } /* an elf symbol of type STT_FILE must be put so that STB_LOCAL symbols can be safely used */ put_elf_sym(symtab_section, 0, 0, ELFW(ST_INFO)(STB_LOCAL, STT_FILE), 0, SHN_ABS, file->filename); /* define some often used types */ int_type.t = VT_INT; char_pointer_type.t = VT_BYTE; mk_pointer(&char_pointer_type); func_old_type.t = VT_FUNC; func_old_type.ref = sym_push(SYM_FIELD, &int_type, FUNC_CDECL, FUNC_OLD); #if defined(TCC_ARM_EABI) && defined(TCC_ARM_VFP) float_type.t = VT_FLOAT; double_type.t = VT_DOUBLE; func_float_type.t = VT_FUNC; func_float_type.ref = sym_push(SYM_FIELD, &float_type, FUNC_CDECL, FUNC_OLD); func_double_type.t = VT_FUNC; func_double_type.ref = sym_push(SYM_FIELD, &double_type, FUNC_CDECL, FUNC_OLD); #endif #if 0 /* define 'void *alloca(unsigned int)' builtin function */ { Sym *s1; p = anon_sym++; sym = sym_push(p, mk_pointer(VT_VOID), FUNC_CDECL, FUNC_NEW); s1 = sym_push(SYM_FIELD, VT_UNSIGNED | VT_INT, 0, 0); s1->next = NULL; sym->next = s1; sym_push(TOK_alloca, VT_FUNC | (p << VT_STRUCT_SHIFT), VT_CONST, 0); } #endif define_start = define_stack; nocode_wanted = 1; if (setjmp(s1->error_jmp_buf) == 0) { s1->nb_errors = 0; s1->error_set_jmp_enabled = 1; ch = file->buf_ptr[0]; tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF; parse_flags = PARSE_FLAG_PREPROCESS | PARSE_FLAG_TOK_NUM; next(); decl(VT_CONST); if (tok != TOK_EOF) expect("declaration"); /* end of translation unit info */ if (s1->do_debug) { put_stabs_r(NULL, N_SO, 0, 0, text_section->data_offset, text_section, section_sym); } } s1->error_set_jmp_enabled = 0; /* reset define stack, but leave -Dsymbols (may be incorrect if they are undefined) */ free_defines(define_start); gen_inline_functions(); sym_pop(&global_stack, NULL); sym_pop(&local_stack, NULL); return s1->nb_errors != 0 ? -1 : 0; } LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str) { BufferedFile bf1, *bf = &bf1; int ret, len; char *buf; /* init file structure */ bf->fd = -1; /* XXX: avoid copying */ len = strlen(str); buf = tcc_malloc(len + 1); if (!buf) return -1; memcpy(buf, str, len); buf[len] = CH_EOB; bf->buf_ptr = buf; bf->buf_end = buf + len; pstrcpy(bf->filename, sizeof(bf->filename), ""); bf->line_num = 1; file = bf; ret = tcc_compile(s); file = NULL; tcc_free(buf); /* currently, no need to close */ return ret; } /* define a preprocessor symbol. A value can also be provided with the '=' operator */ LIBTCCAPI void tcc_define_symbol(TCCState *s1, const char *sym, const char *value) { BufferedFile bf1, *bf = &bf1; pstrcpy(bf->buffer, IO_BUF_SIZE, sym); pstrcat(bf->buffer, IO_BUF_SIZE, " "); /* default value */ if (!value) value = "1"; pstrcat(bf->buffer, IO_BUF_SIZE, value); /* init file structure */ bf->fd = -1; bf->buf_ptr = bf->buffer; bf->buf_end = bf->buffer + strlen(bf->buffer); *bf->buf_end = CH_EOB; bf->filename[0] = '\0'; bf->line_num = 1; file = bf; s1->include_stack_ptr = s1->include_stack; /* parse with define parser */ ch = file->buf_ptr[0]; next_nomacro(); parse_define(); file = NULL; } /* undefine a preprocessor symbol */ LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym) { TokenSym *ts; Sym *s; ts = tok_alloc(sym, strlen(sym)); s = define_find(ts->tok); /* undefine symbol by putting an invalid name */ if (s) define_undef(s); } static void tcc_cleanup(void) { int i, n; if (NULL == tcc_state) return; tcc_state = NULL; /* free -D defines */ free_defines(NULL); /* free tokens */ n = tok_ident - TOK_IDENT; for(i = 0; i < n; i++) tcc_free(table_ident[i]); tcc_free(table_ident); /* free sym_pools */ dynarray_reset(&sym_pools, &nb_sym_pools); /* string buffer */ cstr_free(&tokcstr); /* reset symbol stack */ sym_free_first = NULL; /* cleanup from error/setjmp */ macro_ptr = NULL; } LIBTCCAPI TCCState *tcc_new(void) { TCCState *s; char buffer[100]; int a,b,c; tcc_cleanup(); s = tcc_mallocz(sizeof(TCCState)); if (!s) return NULL; tcc_state = s; #ifdef _WIN32 tcc_set_lib_path_w32(s); #else tcc_set_lib_path(s, CONFIG_TCCDIR); #endif s->output_type = TCC_OUTPUT_MEMORY; preprocess_new(); /* we add dummy defines for some special macros to speed up tests and to have working defined() */ define_push(TOK___LINE__, MACRO_OBJ, NULL, NULL); define_push(TOK___FILE__, MACRO_OBJ, NULL, NULL); define_push(TOK___DATE__, MACRO_OBJ, NULL, NULL); define_push(TOK___TIME__, MACRO_OBJ, NULL, NULL); /* standard defines */ tcc_define_symbol(s, "__STDC__", NULL); tcc_define_symbol(s, "__STDC_VERSION__", "199901L"); #if defined(TCC_TARGET_I386) tcc_define_symbol(s, "__i386__", NULL); tcc_define_symbol(s, "__i386", NULL); tcc_define_symbol(s, "i386", NULL); #endif #if defined(TCC_TARGET_X86_64) tcc_define_symbol(s, "__x86_64__", NULL); #endif #if defined(TCC_TARGET_ARM) tcc_define_symbol(s, "__ARM_ARCH_4__", NULL); tcc_define_symbol(s, "__arm_elf__", NULL); tcc_define_symbol(s, "__arm_elf", NULL); tcc_define_symbol(s, "arm_elf", NULL); tcc_define_symbol(s, "__arm__", NULL); tcc_define_symbol(s, "__arm", NULL); tcc_define_symbol(s, "arm", NULL); tcc_define_symbol(s, "__APCS_32__", NULL); #endif #ifdef TCC_TARGET_PE tcc_define_symbol(s, "_WIN32", NULL); #ifdef TCC_TARGET_X86_64 tcc_define_symbol(s, "_WIN64", NULL); #endif #else tcc_define_symbol(s, "__unix__", NULL); tcc_define_symbol(s, "__unix", NULL); tcc_define_symbol(s, "unix", NULL); #if defined(__FreeBSD__) #define str(s) #s tcc_define_symbol(s, "__FreeBSD__", str( __FreeBSD__)); #undef str #endif #if defined(__linux) tcc_define_symbol(s, "__linux__", NULL); tcc_define_symbol(s, "__linux", NULL); #endif #endif /* tiny C specific defines */ sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c); sprintf(buffer, "%d", a*10000 + b*100 + c); tcc_define_symbol(s, "__TINYC__", buffer); /* tiny C & gcc defines */ #if defined TCC_TARGET_PE && defined TCC_TARGET_X86_64 tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long"); tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long"); #else tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long"); tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long"); #endif #ifdef TCC_TARGET_PE tcc_define_symbol(s, "__WCHAR_TYPE__", "unsigned short"); #else tcc_define_symbol(s, "__WCHAR_TYPE__", "int"); #endif #ifndef TCC_TARGET_PE /* default library paths */ # if defined(TCC_TARGET_X86_64_CENTOS) tcc_add_library_path(s, CONFIG_SYSROOT "/usr/lib64"); tcc_add_library_path(s, CONFIG_SYSROOT "/lib64"); tcc_add_library_path(s, CONFIG_SYSROOT "/usr/local/lib64"); # else tcc_add_library_path(s, CONFIG_SYSROOT "/usr/lib"); tcc_add_library_path(s, CONFIG_SYSROOT "/lib"); tcc_add_library_path(s, CONFIG_SYSROOT "/usr/local/lib"); # endif #endif /* no section zero */ dynarray_add((void ***)&s->sections, &s->nb_sections, NULL); /* create standard sections */ text_section = new_section(s, ".text", SHT_PROGBITS, SHF_ALLOC | SHF_EXECINSTR); data_section = new_section(s, ".data", SHT_PROGBITS, SHF_ALLOC | SHF_WRITE); bss_section = new_section(s, ".bss", SHT_NOBITS, SHF_ALLOC | SHF_WRITE); /* symbols are always generated for linking stage */ symtab_section = new_symtab(s, ".symtab", SHT_SYMTAB, 0, ".strtab", ".hashtab", SHF_PRIVATE); strtab_section = symtab_section->link; /* private symbol table for dynamic symbols */ s->dynsymtab_section = new_symtab(s, ".dynsymtab", SHT_SYMTAB, SHF_PRIVATE, ".dynstrtab", ".dynhashtab", SHF_PRIVATE); s->alacarte_link = 1; s->nocommon = 1; #ifdef CHAR_IS_UNSIGNED s->char_is_unsigned = 1; #endif #if defined(TCC_TARGET_PE) && 0 /* XXX: currently the PE linker is not ready to support that */ s->leading_underscore = 1; #endif if (s->section_align == 0) s->section_align = ELF_PAGE_SIZE; #ifdef TCC_TARGET_I386 s->seg_size = 32; #endif return s; } LIBTCCAPI void tcc_delete(TCCState *s1) { int i; tcc_cleanup(); /* free all sections */ for(i = 1; i < s1->nb_sections; i++) free_section(s1->sections[i]); dynarray_reset(&s1->sections, &s1->nb_sections); for(i = 0; i < s1->nb_priv_sections; i++) free_section(s1->priv_sections[i]); dynarray_reset(&s1->priv_sections, &s1->nb_priv_sections); /* free any loaded DLLs */ for ( i = 0; i < s1->nb_loaded_dlls; i++) { DLLReference *ref = s1->loaded_dlls[i]; if ( ref->handle ) dlclose(ref->handle); } /* free loaded dlls array */ dynarray_reset(&s1->loaded_dlls, &s1->nb_loaded_dlls); /* free library paths */ dynarray_reset(&s1->library_paths, &s1->nb_library_paths); /* free include paths */ dynarray_reset(&s1->cached_includes, &s1->nb_cached_includes); dynarray_reset(&s1->include_paths, &s1->nb_include_paths); dynarray_reset(&s1->sysinclude_paths, &s1->nb_sysinclude_paths); tcc_free(s1->tcc_lib_path); dynarray_reset(&s1->input_files, &s1->nb_input_files); dynarray_reset(&s1->input_libs, &s1->nb_input_libs); dynarray_reset(&s1->target_deps, &s1->nb_target_deps); #ifdef HAVE_SELINUX munmap (s1->write_mem, s1->mem_size); munmap (s1->runtime_mem, s1->mem_size); #else tcc_free(s1->runtime_mem); #endif tcc_free(s1); } LIBTCCAPI int tcc_add_include_path(TCCState *s1, const char *pathname) { char *pathname1; pathname1 = tcc_strdup(pathname); dynarray_add((void ***)&s1->include_paths, &s1->nb_include_paths, pathname1); return 0; } LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s1, const char *pathname) { char *pathname1; pathname1 = tcc_strdup(pathname); dynarray_add((void ***)&s1->sysinclude_paths, &s1->nb_sysinclude_paths, pathname1); return 0; } ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags) { const char *ext; ElfW(Ehdr) ehdr; int fd, ret, size; BufferedFile *saved_file; ret = -1; /* find source file type with extension */ ext = tcc_fileextension(filename); if (ext[0]) ext++; /* open the file */ saved_file = file; file = tcc_open(s1, filename); if (!file) { if (flags & AFF_PRINT_ERROR) error_noabort("file '%s' not found", filename); goto the_end; } /* update target deps */ dynarray_add((void ***)&s1->target_deps, &s1->nb_target_deps, tcc_strdup(filename)); if (flags & AFF_PREPROCESS) { ret = tcc_preprocess(s1); goto the_end; } if (!ext[0] || !PATHCMP(ext, "c")) { /* C file assumed */ ret = tcc_compile(s1); goto the_end; } #ifdef CONFIG_TCC_ASM if (!strcmp(ext, "S")) { /* preprocessed assembler */ ret = tcc_assemble(s1, 1); goto the_end; } if (!strcmp(ext, "s")) { /* non preprocessed assembler */ ret = tcc_assemble(s1, 0); goto the_end; } #endif fd = file->fd; /* assume executable format: auto guess file type */ size = read(fd, &ehdr, sizeof(ehdr)); lseek(fd, 0, SEEK_SET); if (size <= 0) { error_noabort("could not read header"); goto the_end; } if (size == sizeof(ehdr) && ehdr.e_ident[0] == ELFMAG0 && ehdr.e_ident[1] == ELFMAG1 && ehdr.e_ident[2] == ELFMAG2 && ehdr.e_ident[3] == ELFMAG3) { /* do not display line number if error */ file->line_num = 0; if (ehdr.e_type == ET_REL) { ret = tcc_load_object_file(s1, fd, 0); goto the_end; } #ifndef TCC_TARGET_PE if (ehdr.e_type == ET_DYN) { if (s1->output_type == TCC_OUTPUT_MEMORY) { void *h; h = dlopen(filename, RTLD_GLOBAL | RTLD_LAZY); if (h) ret = 0; } else { ret = tcc_load_dll(s1, fd, filename, (flags & AFF_REFERENCED_DLL) != 0); } goto the_end; } #endif error_noabort("unrecognized ELF file"); goto the_end; } if (memcmp((char *)&ehdr, ARMAG, 8) == 0) { file->line_num = 0; /* do not display line number if error */ ret = tcc_load_archive(s1, fd); goto the_end; } #ifdef TCC_TARGET_COFF if (*(uint16_t *)(&ehdr) == COFF_C67_MAGIC) { ret = tcc_load_coff(s1, fd); goto the_end; } #endif #ifdef TCC_TARGET_PE ret = pe_load_file(s1, filename, fd); #else /* as GNU ld, consider it is an ld script if not recognized */ ret = tcc_load_ldscript(s1); #endif if (ret < 0) error_noabort("unrecognized file type"); the_end: if (file) tcc_close(file); file = saved_file; return ret; } LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename) { dynarray_add((void ***)&s->input_files, &s->nb_input_files, tcc_strdup(filename)); if (s->output_type == TCC_OUTPUT_PREPROCESS) return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR | AFF_PREPROCESS); else return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR); } LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname) { char *pathname1; pathname1 = tcc_strdup(pathname); dynarray_add((void ***)&s->library_paths, &s->nb_library_paths, pathname1); return 0; } /* find and load a dll. Return non zero if not found */ /* XXX: add '-rpath' option support ? */ ST_FUNC int tcc_add_dll(TCCState *s, const char *filename, int flags) { char buf[1024]; int i; for(i = 0; i < s->nb_library_paths; i++) { snprintf(buf, sizeof(buf), "%s/%s", s->library_paths[i], filename); if (tcc_add_file_internal(s, buf, flags) == 0) return 0; } return -1; } /* the library name is the same as the argument of the '-l' option */ LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname) { char buf[1024]; int i; dynarray_add((void ***)&s->input_libs, &s->nb_input_libs, tcc_strdup(libraryname)); /* first we look for the dynamic library if not static linking */ if (!s->static_link) { #ifdef TCC_TARGET_PE if (pe_add_dll(s, libraryname) == 0) return 0; #else snprintf(buf, sizeof(buf), "lib%s.so", libraryname); if (tcc_add_dll(s, buf, 0) == 0) return 0; #endif } /* then we look for the static library */ for(i = 0; i < s->nb_library_paths; i++) { snprintf(buf, sizeof(buf), "%s/lib%s.a", s->library_paths[i], libraryname); if (tcc_add_file_internal(s, buf, 0) == 0) return 0; } return -1; } LIBTCCAPI int tcc_add_symbol(TCCState *s, const char *name, const void *val) { #ifdef TCC_TARGET_PE pe_putimport(s, 0, name, val); #else add_elf_sym(symtab_section, (uplong)val, 0, ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0, SHN_ABS, name); #endif return 0; } LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type) { char buf[1024]; s->output_type = output_type; if (!s->nostdinc) { /* default include paths */ /* XXX: reverse order needed if -isystem support */ #ifndef TCC_TARGET_PE tcc_add_sysinclude_path(s, CONFIG_SYSROOT "/usr/local/include"); tcc_add_sysinclude_path(s, CONFIG_SYSROOT "/usr/include"); #endif snprintf(buf, sizeof(buf), "%s/include", s->tcc_lib_path); tcc_add_sysinclude_path(s, buf); #ifdef TCC_TARGET_PE snprintf(buf, sizeof(buf), "%s/include/winapi", s->tcc_lib_path); tcc_add_sysinclude_path(s, buf); #endif } /* if bound checking, then add corresponding sections */ #ifdef CONFIG_TCC_BCHECK if (s->do_bounds_check) { /* define symbol */ tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL); /* create bounds sections */ bounds_section = new_section(s, ".bounds", SHT_PROGBITS, SHF_ALLOC); lbounds_section = new_section(s, ".lbounds", SHT_PROGBITS, SHF_ALLOC); } #endif if (s->char_is_unsigned) { tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL); } /* add debug sections */ if (s->do_debug) { /* stab symbols */ stab_section = new_section(s, ".stab", SHT_PROGBITS, 0); stab_section->sh_entsize = sizeof(Stab_Sym); stabstr_section = new_section(s, ".stabstr", SHT_STRTAB, 0); put_elf_str(stabstr_section, ""); stab_section->link = stabstr_section; /* put first entry */ put_stabs("", 0, 0, 0, 0); } /* add libc crt1/crti objects */ #ifndef TCC_TARGET_PE if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) && !s->nostdlib) { if (output_type != TCC_OUTPUT_DLL) tcc_add_file(s, CONFIG_TCC_CRT_PREFIX "/crt1.o"); tcc_add_file(s, CONFIG_TCC_CRT_PREFIX "/crti.o"); } #endif #ifdef TCC_TARGET_PE snprintf(buf, sizeof(buf), "%s/lib", s->tcc_lib_path); tcc_add_library_path(s, buf); #ifdef _WIN32 if (GetSystemDirectory(buf, sizeof buf)) tcc_add_library_path(s, buf); #endif #endif return 0; } #define WD_ALL 0x0001 /* warning is activated when using -Wall */ #define FD_INVERT 0x0002 /* invert value before storing */ typedef struct FlagDef { uint16_t offset; uint16_t flags; const char *name; } FlagDef; static const FlagDef warning_defs[] = { { offsetof(TCCState, warn_unsupported), 0, "unsupported" }, { offsetof(TCCState, warn_write_strings), 0, "write-strings" }, { offsetof(TCCState, warn_error), 0, "error" }, { offsetof(TCCState, warn_implicit_function_declaration), WD_ALL, "implicit-function-declaration" }, }; ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, int nb_flags, const char *name, int value) { int i; const FlagDef *p; const char *r; r = name; if (r[0] == 'n' && r[1] == 'o' && r[2] == '-') { r += 3; value = !value; } for(i = 0, p = flags; i < nb_flags; i++, p++) { if (!strcmp(r, p->name)) goto found; } return -1; found: if (p->flags & FD_INVERT) value = !value; *(int *)((uint8_t *)s + p->offset) = value; return 0; } /* set/reset a warning */ LIBTCCAPI int tcc_set_warning(TCCState *s, const char *warning_name, int value) { int i; const FlagDef *p; if (!strcmp(warning_name, "all")) { for(i = 0, p = warning_defs; i < countof(warning_defs); i++, p++) { if (p->flags & WD_ALL) *(int *)((uint8_t *)s + p->offset) = 1; } return 0; } else { return set_flag(s, warning_defs, countof(warning_defs), warning_name, value); } } static const FlagDef flag_defs[] = { { offsetof(TCCState, char_is_unsigned), 0, "unsigned-char" }, { offsetof(TCCState, char_is_unsigned), FD_INVERT, "signed-char" }, { offsetof(TCCState, nocommon), FD_INVERT, "common" }, { offsetof(TCCState, leading_underscore), 0, "leading-underscore" }, }; /* set/reset a flag */ PUB_FUNC int tcc_set_flag(TCCState *s, const char *flag_name, int value) { return set_flag(s, flag_defs, countof(flag_defs), flag_name, value); } static int strstart(const char *str, const char *val, char **ptr) { const char *p, *q; p = str; q = val; while (*q != '\0') { if (*p != *q) return 0; p++; q++; } if (ptr) *ptr = (char *) p; return 1; } /* Like strstart, but automatically takes into account that ld options can * * - start with double or single dash (e.g. '--soname' or '-soname') * - arguments can be given as separate or after '=' (e.g. '-Wl,-soname,x.so' * or '-Wl,-soname=x.so') * * you provide `val` always in 'option[=]' form (no leading -) */ static int link_option(const char *str, const char *val, char **ptr) { const char *p, *q; /* there should be 1 or 2 dashes */ if (*str++ != '-') return 0; if (*str == '-') str++; /* then str & val should match (potentialy up to '=') */ p = str; q = val; while (*q != '\0' && *q != '=') { if (*p != *q) return 0; p++; q++; } /* '=' near eos means ',' or '=' is ok */ if (*q == '=') { if (*p != ',' && *p != '=') return 0; p++; q++; } if (ptr) *ptr = (char *) p; return 1; } /* set linker options */ PUB_FUNC const char * tcc_set_linker(TCCState *s, char *option, int multi) { char *p = option; char *end; while (option && *option) { end = NULL; if (link_option(option, "Bsymbolic", &p)) { s->symbolic = TRUE; #ifdef TCC_TARGET_PE } else if (link_option(option, "file-alignment=", &p)) { s->pe_file_align = strtoul(p, &end, 16); #endif } else if (link_option(option, "fini=", &p)) { s->fini_symbol = p; if (s->warn_unsupported) warning("ignoring -fini %s", p); } else if (link_option(option, "image-base=", &p)) { s->text_addr = strtoul(p, &end, 16); s->has_text_addr = 1; } else if (link_option(option, "init=", &p)) { s->init_symbol = p; if (s->warn_unsupported) warning("ignoring -init %s", p); } else if (link_option(option, "oformat=", &p)) { #if defined(TCC_TARGET_PE) if (strstart(p, "pe-", NULL)) { #else #if defined(TCC_TARGET_X86_64) if (strstart(p, "elf64-", NULL)) { #else if (strstart(p, "elf32-", NULL)) { #endif #endif s->output_format = TCC_OUTPUT_FORMAT_ELF; } else if (!strcmp(p, "binary")) { s->output_format = TCC_OUTPUT_FORMAT_BINARY; } else #ifdef TCC_TARGET_COFF if (!strcmp(p, "coff")) { s->output_format = TCC_OUTPUT_FORMAT_COFF; } else #endif { return p; } } else if (link_option(option, "rpath=", &p)) { s->rpath = p; } else if (link_option(option, "section-alignment=", &p)) { s->section_align = strtoul(p, &end, 16); } else if (link_option(option, "soname=", &p)) { s->soname = p; multi = 0; #ifdef TCC_TARGET_PE } else if (link_option(option, "subsystem=", &p)) { #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64) if (!strcmp(p, "native")) { s->pe_subsystem = 1; } else if (!strcmp(p, "console")) { s->pe_subsystem = 3; } else if (!strcmp(p, "gui")) { s->pe_subsystem = 2; } else if (!strcmp(p, "posix")) { s->pe_subsystem = 7; } else if (!strcmp(p, "efiapp")) { s->pe_subsystem = 10; } else if (!strcmp(p, "efiboot")) { s->pe_subsystem = 11; } else if (!strcmp(p, "efiruntime")) { s->pe_subsystem = 12; } else if (!strcmp(p, "efirom")) { s->pe_subsystem = 13; #elif defined(TCC_TARGET_ARM) if (!strcmp(p, "wince")) { s->pe_subsystem = 9; #endif } else { return p; } #endif } else if (link_option(option, "Ttext=", &p)) { s->text_addr = strtoul(p, &end, 16); s->has_text_addr = 1; } else { return option; } if (multi) { option = NULL; p = strchr( (end) ? end : p, ','); if (p) { *p = 0; /* terminate last option */ option = ++p; } } else option = NULL; } return NULL; } PUB_FUNC void tcc_print_stats(TCCState *s, int64_t total_time) { double tt; tt = (double)total_time / 1000000.0; if (tt < 0.001) tt = 0.001; if (total_bytes < 1) total_bytes = 1; printf("%d idents, %d lines, %d bytes, %0.3f s, %d lines/s, %0.1f MB/s\n", tok_ident - TOK_IDENT, total_lines, total_bytes, tt, (int)(total_lines / tt), total_bytes / tt / 1000000.0); } /* set CONFIG_TCCDIR at runtime */ LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path) { tcc_free(s->tcc_lib_path); s->tcc_lib_path = tcc_strdup(path); } PUB_FUNC void set_num_callers(int n) { #ifdef CONFIG_TCC_BACKTRACE num_callers = n; #endif } LIBTCCAPI const char *tcc_default_target(TCCState *s) { /* FIXME will break in multithreaded case */ static char outfile_default[1024]; char *ext; const char *name = strcmp(s->input_files[0], "-") == 0 ? "a" : tcc_basename(s->input_files[0]); pstrcpy(outfile_default, sizeof(outfile_default), name); ext = tcc_fileextension(outfile_default); #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->reloc_output) || (s->output_type == TCC_OUTPUT_PREPROCESS) ) && *ext) strcpy(ext, ".o"); else pstrcpy(outfile_default, sizeof(outfile_default), "a.out"); return outfile_default; } LIBTCCAPI void tcc_gen_makedeps(TCCState *s, const char *target, const char *filename) { FILE *depout; char buf[1024], *ext; int i; if (!target) target = tcc_default_target(s); 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) error("could not open '%s'", filename); fprintf(depout, "%s : \\\n", target); for (i=0; inb_target_deps; ++i) fprintf(depout, "\t%s \\\n", s->target_deps[i]); fprintf(depout, "\n"); fclose(depout); }