diff options
Diffstat (limited to 'libtcc.c')
| -rw-r--r-- | libtcc.c | 538 |
1 files changed, 96 insertions, 442 deletions
@@ -82,7 +82,7 @@ ST_FUNC void asm_global_instr(void) /********************************************************/ #ifdef _WIN32 -static char *normalize_slashes(char *path) +ST_FUNC char *normalize_slashes(char *path) { char *p; for (p = path; *p; ++p) @@ -116,13 +116,6 @@ static void tcc_add_systemdir(TCCState *s) } #endif -#if defined TCC_IS_NATIVE -static void dlclose(void *p) -{ - FreeLibrary((HMODULE)p); -} -#endif - #ifdef LIBTCC_AS_DLL BOOL WINAPI DllMain (HINSTANCE hDll, DWORD dwReason, LPVOID lpReserved) { @@ -492,239 +485,6 @@ static void tcc_split_path(TCCState *s, void ***p_ary, int *p_nb_ary, const char /********************************************************/ -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 = PTR_SIZE; /* gcc/pcc default aligment */ - 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); - 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, addr_t size) -{ - size_t 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, - addr_t 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]; - -#ifdef CONFIG_TCC_BCHECK - char buf[32]; -#endif - - 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.t & VT_WEAK) - 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) { - /* 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 |= ST_PE_EXPORT; - if (sym_type == STT_FUNC && sym->type.ref) { - Sym *ref = sym->type.ref; - if (ref->a.func_export) - other |= ST_PE_EXPORT; - if (ref->a.func_call == FUNC_STDCALL && can_add_underscore) { - sprintf(buf1, "_%s@%d", name, ref->a.func_args * PTR_SIZE); - name = buf1; - other |= ST_PE_STDCALL; - can_add_underscore = 0; - } - } else { - if (find_elf_sym(tcc_state->dynsymtab_section, name)) - other |= ST_PE_IMPORT; - if (sym->type.t & VT_IMPORT) - other |= ST_PE_IMPORT; - } -#else - if (! (sym->type.t & VT_STATIC)) - other = (sym->type.t & VT_VIS_MASK) >> VT_VIS_SHIFT; -#endif - if (tcc_state->leading_underscore && can_add_underscore) { - buf1[0] = '_'; - pstrcpy(buf1 + 1, sizeof(buf1) - 1, name); - name = buf1; - } - if (sym->asm_label) { - name = get_tok_str(sym->asm_label, NULL); - } - 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, - addr_t 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 greloca(Section *s, Sym *sym, unsigned long offset, int type, - addr_t addend) -{ - 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_reloca(symtab_section, s, offset, type, c, addend); -} - -ST_FUNC void greloc(Section *s, Sym *sym, unsigned long offset, int type) -{ - greloca(s, sym, offset, type, 0); -} - -/********************************************************/ - static void strcat_vprintf(char *buf, int buf_size, const char *fmt, va_list ap) { int len; @@ -886,79 +646,18 @@ ST_FUNC int tcc_open(TCCState *s1, const char *filename) 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); - -#if PTR_SIZE == 4 - size_type.t = VT_INT; -#else - size_type.t = VT_LLONG; -#endif - - func_old_type.t = VT_FUNC; - func_old_type.ref = sym_push(SYM_FIELD, &int_type, FUNC_CDECL, FUNC_OLD); -#ifdef TCC_TARGET_ARM - arm_init(s1); -#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; + tccgen_start(s1); +#ifdef INC_DEBUG + printf("%s: **** new file\n", file->filename); +#endif ch = file->buf_ptr[0]; tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF; parse_flags = PARSE_FLAG_PREPROCESS | PARSE_FLAG_TOK_NUM | PARSE_FLAG_TOK_STR; @@ -967,12 +666,7 @@ static int tcc_compile(TCCState *s1) if (tok != TOK_EOF) expect("declaration"); gen_inline_functions(); - check_vstack(); - /* 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); - } + tccgen_end(s1); } s1->error_set_jmp_enabled = 0; @@ -1049,21 +743,37 @@ static void tcc_cleanup(void) 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; + + s->alacarte_link = 1; + s->nocommon = 1; + s->warn_implicit_function_declaration = 1; + +#ifdef CHAR_IS_UNSIGNED + s->char_is_unsigned = 1; +#endif +#ifdef TCC_TARGET_I386 + s->seg_size = 32; +#endif +#ifdef TCC_IS_NATIVE + s->runtime_main = "main"; +#endif + /* enable this if you want symbols with leading underscore on windows: */ +#if 0 /* def TCC_TARGET_PE */ + s->leading_underscore = 1; +#endif #ifdef _WIN32 tcc_set_lib_path_w32(s); #else tcc_set_lib_path(s, CONFIG_TCCDIR); #endif + tccelf_new(s); preprocess_new(); s->include_stack_ptr = s->include_stack; @@ -1073,11 +783,13 @@ LIBTCCAPI TCCState *tcc_new(void) define_push(TOK___FILE__, MACRO_OBJ, NULL, NULL); define_push(TOK___DATE__, MACRO_OBJ, NULL, NULL); define_push(TOK___TIME__, MACRO_OBJ, NULL, NULL); - - /* define __TINYC__ 92X */ - sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c); - sprintf(buffer, "%d", a*10000 + b*100 + c); - tcc_define_symbol(s, "__TINYC__", buffer); + { + /* define __TINYC__ 92X */ + char buffer[32]; int a,b,c; + sscanf(TCC_VERSION, "%d.%d.%d", &a, &b, &c); + sprintf(buffer, "%d", a*10000 + b*100 + c); + tcc_define_symbol(s, "__TINYC__", buffer); + } /* standard defines */ tcc_define_symbol(s, "__STDC__", NULL); @@ -1178,82 +890,22 @@ LIBTCCAPI TCCState *tcc_new(void) #else tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int"); #endif -#endif - -#ifndef TCC_TARGET_PE /* glibc defines */ tcc_define_symbol(s, "__REDIRECT(name, proto, alias)", "name proto __asm__ (#alias)"); tcc_define_symbol(s, "__REDIRECT_NTH(name, proto, alias)", "name proto __asm__ (#alias) __THROW"); - /* paths for crt objects */ - tcc_split_path(s, (void ***)&s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX); #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; - s->symtab = symtab_section; - - /* 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; - s->warn_implicit_function_declaration = 1; - -#ifdef CHAR_IS_UNSIGNED - s->char_is_unsigned = 1; -#endif - /* enable this if you want symbols with leading underscore on windows: */ -#if 0 /* def TCC_TARGET_PE */ - s->leading_underscore = 1; -#endif -#ifdef TCC_TARGET_I386 - s->seg_size = 32; -#endif -#ifdef TCC_IS_NATIVE - s->runtime_main = "main"; -#endif return s; } LIBTCCAPI void tcc_delete(TCCState *s1) { - int i; int bench = s1->do_bench; 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 */ -#ifdef TCC_IS_NATIVE - for ( i = 0; i < s1->nb_loaded_dlls; i++) { - DLLReference *ref = s1->loaded_dlls[i]; - if ( ref->handle ) - dlclose(ref->handle); - } -#endif - - /* free loaded dlls array */ - dynarray_reset(&s1->loaded_dlls, &s1->nb_loaded_dlls); + /* free sections */ + tccelf_delete(s1); /* free library paths */ dynarray_reset(&s1->library_paths, &s1->nb_library_paths); @@ -1289,6 +941,68 @@ LIBTCCAPI void tcc_delete(TCCState *s1) tcc_memstats(bench); } +LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type) +{ + s->output_type = output_type; + + /* always elf for objects */ + if (output_type == TCC_OUTPUT_OBJ) + s->output_format = TCC_OUTPUT_FORMAT_ELF; + + if (s->char_is_unsigned) + tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL); + + if (!s->nostdinc) { + /* default include paths */ + /* -isystem paths have already been handled */ + tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS); + } + +#ifdef CONFIG_TCC_BCHECK + /* if bound checking, then add corresponding sections */ + 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 + /* 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); + } + + tcc_add_library_path(s, CONFIG_TCC_LIBPATHS); + +#ifdef TCC_TARGET_PE +# ifdef _WIN32 + if (!s->nostdlib && output_type != TCC_OUTPUT_OBJ) + tcc_add_systemdir(s); +# endif +#else + /* paths for crt objects */ + tcc_split_path(s, (void ***)&s->crt_paths, &s->nb_crt_paths, CONFIG_TCC_CRTPREFIX); + /* add libc crt1/crti objects */ + if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) && + !s->nostdlib) { + if (output_type != TCC_OUTPUT_DLL) + tcc_add_crt(s, "crt1.o"); + tcc_add_crt(s, "crti.o"); + } +#endif + return 0; +} + LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname) { tcc_split_path(s, (void ***)&s->include_paths, &s->nb_include_paths, pathname); @@ -1503,66 +1217,6 @@ LIBTCCAPI int tcc_add_symbol(TCCState *s, const char *name, const void *val) return 0; } -LIBTCCAPI int tcc_set_output_type(TCCState *s, int output_type) -{ - s->output_type = output_type; - - /* always elf for objects */ - if (output_type == TCC_OUTPUT_OBJ) - s->output_format = TCC_OUTPUT_FORMAT_ELF; - - if (s->char_is_unsigned) - tcc_define_symbol(s, "__CHAR_UNSIGNED__", NULL); - - if (!s->nostdinc) { - /* default include paths */ - /* -isystem paths have already been handled */ - tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS); - } - -#ifdef CONFIG_TCC_BCHECK - /* if bound checking, then add corresponding sections */ - 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 - /* 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); - } - - tcc_add_library_path(s, CONFIG_TCC_LIBPATHS); - -#ifdef TCC_TARGET_PE -# ifdef _WIN32 - if (!s->nostdlib && output_type != TCC_OUTPUT_OBJ) - tcc_add_systemdir(s); -# endif -#else - /* add libc crt1/crti objects */ - if ((output_type == TCC_OUTPUT_EXE || output_type == TCC_OUTPUT_DLL) && - !s->nostdlib) { - if (output_type != TCC_OUTPUT_DLL) - tcc_add_crt(s, "crt1.o"); - tcc_add_crt(s, "crti.o"); - } -#endif - return 0; -} - LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path) { tcc_free(s->tcc_lib_path); 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