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tinycc/libtcc.c

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/*
* 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 ONE_SOURCE
#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_ARM64
#include "arm64-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 /* ONE_SOURCE */
/********************************************************/
#ifndef CONFIG_TCC_ASM
ST_FUNC void asm_instr(void)
{
tcc_error("inline asm() not supported");
}
ST_FUNC void asm_global_instr(void)
{
tcc_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);
}
#ifdef TCC_TARGET_PE
static void tcc_add_systemdir(TCCState *s)
{
char buf[1000];
GetSystemDirectory(buf, sizeof buf);
tcc_add_library_path(s, normalize_slashes(buf));
}
#endif
#ifndef CONFIG_TCC_STATIC
void dlclose(void *p)
{
FreeLibrary((HMODULE)p);
}
#endif
#ifdef LIBTCC_AS_DLL
BOOL WINAPI DllMain (HINSTANCE 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;
}
PUB_FUNC char *pstrncpy(char *out, const char *in, size_t num)
{
memcpy(out, in, num);
out[num] = '\0';
return out;
}
/* extract the basename of a file */
PUB_FUNC char *tcc_basename(const char *name)
{
char *p = strchr(name, 0);
while (p > name && !IS_DIRSEP(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
#ifndef MEM_DEBUG
PUB_FUNC void tcc_free(void *ptr)
{
free(ptr);
}
PUB_FUNC void *tcc_malloc(unsigned long size)
{
void *ptr;
ptr = malloc(size);
if (!ptr && size)
tcc_error("memory full (malloc)");
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;
ptr1 = realloc(ptr, size);
if (!ptr1 && size)
tcc_error("memory full (realloc)");
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(int bench)
{
}
#else
#define MEM_DEBUG_MAGIC1 0xFEEDDEB1
#define MEM_DEBUG_MAGIC2 0xFEEDDEB2
#define MEM_DEBUG_FILE_LEN 15
struct mem_debug_header {
size_t magic1;
size_t size;
struct mem_debug_header *prev;
struct mem_debug_header *next;
size_t line_num;
char file_name[MEM_DEBUG_FILE_LEN + 1];
size_t magic2;
};
typedef struct mem_debug_header mem_debug_header_t;
static mem_debug_header_t *mem_debug_chain;
static size_t mem_cur_size;
static size_t mem_max_size;
PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line)
{
void *ptr;
mem_debug_header_t *header;
ptr = malloc(sizeof(mem_debug_header_t) + size);
if (!ptr)
tcc_error("memory full (malloc)");
mem_cur_size += size;
if (mem_cur_size > mem_max_size)
mem_max_size = mem_cur_size;
header = (mem_debug_header_t *)ptr;
header->magic1 = MEM_DEBUG_MAGIC1;
header->magic2 = MEM_DEBUG_MAGIC2;
header->size = size;
header->line_num = line;
strncpy(header->file_name, file, MEM_DEBUG_FILE_LEN);
header->file_name[MEM_DEBUG_FILE_LEN] = 0;
header->next = mem_debug_chain;
header->prev = NULL;
if (header->next)
header->next->prev = header;
mem_debug_chain = header;
ptr = (char *)ptr + sizeof(mem_debug_header_t);
return ptr;
}
PUB_FUNC void tcc_free_debug(void *ptr)
{
mem_debug_header_t *header;
if (!ptr)
return;
ptr = (char *)ptr - sizeof(mem_debug_header_t);
header = (mem_debug_header_t *)ptr;
if (header->magic1 != MEM_DEBUG_MAGIC1 ||
header->magic2 != MEM_DEBUG_MAGIC2 ||
header->size == (size_t)-1 )
{
tcc_error("tcc_free check failed");
}
mem_cur_size -= header->size;
header->size = (size_t)-1;
if (header->next)
header->next->prev = header->prev;
if (header->prev)
header->prev->next = header->next;
if (header == mem_debug_chain)
mem_debug_chain = header->next;
free(ptr);
}
PUB_FUNC void *tcc_mallocz_debug(unsigned long size, const char *file, int line)
{
void *ptr;
ptr = tcc_malloc_debug(size,file,line);
memset(ptr, 0, size);
return ptr;
}
PUB_FUNC void *tcc_realloc_debug(void *ptr, unsigned long size, const char *file, int line)
{
mem_debug_header_t *header;
int mem_debug_chain_update = 0;
if (!ptr) {
ptr = tcc_malloc_debug(size, file, line);
return ptr;
}
ptr = (char *)ptr - sizeof(mem_debug_header_t);
header = (mem_debug_header_t *)ptr;
if (header->magic1 != MEM_DEBUG_MAGIC1 ||
header->magic2 != MEM_DEBUG_MAGIC2 ||
header->size == (size_t)-1 )
{
check_error:
tcc_error("tcc_realloc check failed");
}
mem_debug_chain_update = (header == mem_debug_chain);
mem_cur_size -= header->size;
ptr = realloc(ptr, sizeof(mem_debug_header_t) + size);
if (!ptr)
tcc_error("memory full (realloc)");
header = (mem_debug_header_t *)ptr;
if (header->magic1 != MEM_DEBUG_MAGIC1 ||
header->magic2 != MEM_DEBUG_MAGIC2)
{
goto check_error;
}
mem_cur_size += size;
if (mem_cur_size > mem_max_size)
mem_max_size = mem_cur_size;
header->size = size;
if (header->next)
header->next->prev = header;
if (header->prev)
header->prev->next = header;
if (mem_debug_chain_update)
mem_debug_chain = header;
ptr = (char *)ptr + sizeof(mem_debug_header_t);
return ptr;
}
PUB_FUNC char *tcc_strdup_debug(const char *str, const char *file, int line)
{
char *ptr;
ptr = tcc_malloc_debug(strlen(str) + 1, file, line);
strcpy(ptr, str);
return ptr;
}
PUB_FUNC void tcc_memstats(int bench)
{
if (mem_cur_size) {
mem_debug_header_t *header = mem_debug_chain;
fprintf(stderr, "MEM_DEBUG: mem_leak= %d bytes, mem_max_size= %d bytes\n",
mem_cur_size, mem_max_size);
while (header) {
fprintf(stderr, " file %s, line %u: %u bytes\n",
header->file_name, header->line_num, header->size);
header = header->next;
}
}
else if (bench)
fprintf(stderr, "mem_max_size= %d bytes\n", mem_max_size);
}
#undef MEM_DEBUG_MAGIC1
#undef MEM_DEBUG_MAGIC2
#undef MEM_DEBUG_FILE_LEN
#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 */
ST_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 *));
*ptab = pp;
}
pp[nb++] = data;
*nb_ptr = nb;
}
ST_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;
}
static void tcc_split_path(TCCState *s, void ***p_ary, int *p_nb_ary, const char *in)
{
const char *p;
do {
int c;
CString str;
cstr_new(&str);
for (p = in; c = *p, c != '\0' && c != PATHSEP; ++p) {
if (c == '{' && p[1] && p[2] == '}') {
c = p[1], p += 2;
if (c == 'B')
cstr_cat(&str, s->tcc_lib_path);
} else {
cstr_ccat(&str, c);
}
}
cstr_ccat(&str, '\0');
dynarray_add(p_ary, p_nb_ary, str.data);
in = p+1;
} while (*p);
}
/********************************************************/
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);
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 = sym->asm_label;
}
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;
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 **pf, *f;
buf[0] = '\0';
/* use upper file if inline ":asm:" or token ":paste:" */
for (f = file; f && f->filename[0] == ':'; f = f->prev)
;
if (f) {
for(pf = s1->include_stack; pf < s1->include_stack_ptr; pf++)
strcat_printf(buf, sizeof(buf), "In file included from %s:%d:\n",
(*pf)->filename, (*pf)->line_num);
if (f->line_num > 0) {
strcat_printf(buf, sizeof(buf), "%s:%d: ",
f->filename, f->line_num);
} else {
strcat_printf(buf, sizeof(buf), "%s: ",
f->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 */
if (s1->ppfp) /* print a newline during tcc -E */
fprintf(s1->ppfp, "\n"), fflush(s1->ppfp);
fprintf(stderr, "%s\n", buf);
fflush(stderr); /* print error/warning now (win32) */
} 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 tcc_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 tcc_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 tcc_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 void tcc_open_bf(TCCState *s1, const char *filename, int initlen)
{
BufferedFile *bf;
int buflen = initlen ? initlen : IO_BUF_SIZE;
bf = tcc_mallocz(sizeof(BufferedFile) + buflen);
bf->buf_ptr = bf->buffer;
bf->buf_end = bf->buffer + initlen;
bf->buf_end[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->ifdef_stack_ptr = s1->ifdef_stack_ptr;
bf->fd = -1;
bf->prev = file;
file = bf;
}
ST_FUNC void tcc_close(void)
{
BufferedFile *bf = file;
if (bf->fd > 0) {
close(bf->fd);
total_lines += bf->line_num;
}
file = bf->prev;
tcc_free(bf);
}
ST_FUNC int tcc_open(TCCState *s1, const char *filename)
{
int fd;
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 -1;
tcc_open_bf(s1, filename, 0);
file->fd = fd;
return fd;
}
/* 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);
#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;
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;
next();
decl(VT_CONST);
if (tok != TOK_EOF)
expect("declaration");
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);
}
}
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)
{
int len, ret;
len = strlen(str);
tcc_open_bf(s, "<string>", len);
memcpy(file->buffer, str, len);
ret = tcc_compile(s);
tcc_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)
{
int len1, len2;
/* default value */
if (!value)
value = "1";
len1 = strlen(sym);
len2 = strlen(value);
/* init file structure */
tcc_open_bf(s1, "<define>", len1 + len2 + 1);
memcpy(file->buffer, sym, len1);
file->buffer[len1] = ' ';
memcpy(file->buffer + len1 + 1, value, len2);
/* parse with define parser */
ch = file->buf_ptr[0];
next_nomacro();
parse_define();
tcc_close();
}
/* 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);
}
/* cleanup all static data used during compilation */
static void tcc_cleanup(void)
{
if (NULL == tcc_state)
return;
tcc_state = NULL;
preprocess_delete();
/* free sym_pools */
dynarray_reset(&sym_pools, &nb_sym_pools);
/* string buffer */
cstr_free(&tokcstr);
/* reset symbol stack */
sym_free_first = 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 = 0;
preprocess_new();
s->include_stack_ptr = s->include_stack;
/* 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);
/* 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);
/* standard defines */
tcc_define_symbol(s, "__STDC__", NULL);
tcc_define_symbol(s, "__STDC_VERSION__", "199901L");
tcc_define_symbol(s, "__STDC_HOSTED__", NULL);
/* target defines */
#if defined(TCC_TARGET_I386)
tcc_define_symbol(s, "__i386__", NULL);
tcc_define_symbol(s, "__i386", NULL);
tcc_define_symbol(s, "i386", NULL);
#elif defined(TCC_TARGET_X86_64)
tcc_define_symbol(s, "__x86_64__", NULL);
#elif 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);
tcc_define_symbol(s, "__ARMEL__", NULL);
#if defined(TCC_ARM_EABI)
tcc_define_symbol(s, "__ARM_EABI__", NULL);
#endif
#if defined(TCC_ARM_HARDFLOAT)
s->float_abi = ARM_HARD_FLOAT;
tcc_define_symbol(s, "__ARM_PCS_VFP", NULL);
#else
s->float_abi = ARM_SOFTFP_FLOAT;
#endif
#elif defined(TCC_TARGET_ARM64)
tcc_define_symbol(s, "__aarch64__", 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(__linux)
tcc_define_symbol(s, "__linux__", NULL);
tcc_define_symbol(s, "__linux", NULL);
# endif
# if defined(__FreeBSD__)
# define str(s) #s
tcc_define_symbol(s, "__FreeBSD__", str( __FreeBSD__));
# undef str
# endif
# if defined(__FreeBSD_kernel__)
tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
# endif
#endif
/* TinyCC & 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");
tcc_define_symbol(s, "__WINT_TYPE__", "unsigned short");
#else
tcc_define_symbol(s, "__WCHAR_TYPE__", "int");
/* wint_t is unsigned int by default, but (signed) int on BSDs
and unsigned short on windows. Other OSes might have still
other conventions, sigh. */
#if defined(__FreeBSD__) || defined (__FreeBSD_kernel__)
tcc_define_symbol(s, "__WINT_TYPE__", "int");
#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();
/* close a preprocessor output */
if (s1->ppfp && s1->ppfp != stdout)
fclose(s1->ppfp);
/* 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 library paths */
dynarray_reset(&s1->library_paths, &s1->nb_library_paths);
dynarray_reset(&s1->crt_paths, &s1->nb_crt_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);
tcc_free(s1->soname);
tcc_free(s1->rpath);
tcc_free(s1->init_symbol);
tcc_free(s1->fini_symbol);
tcc_free(s1->outfile);
tcc_free(s1->deps_outfile);
dynarray_reset(&s1->files, &s1->nb_files);
dynarray_reset(&s1->target_deps, &s1->nb_target_deps);
dynarray_reset(&s1->pragma_libs, &s1->nb_pragma_libs);
#ifdef TCC_IS_NATIVE
# ifdef HAVE_SELINUX
munmap (s1->write_mem, s1->mem_size);
munmap (s1->runtime_mem, s1->mem_size);
# else
tcc_free(s1->runtime_mem);
# endif
#endif
tcc_free(s1->sym_attrs);
tcc_free(s1);
tcc_memstats(bench);
}
LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
{
tcc_split_path(s, (void ***)&s->include_paths, &s->nb_include_paths, pathname);
return 0;
}
LIBTCCAPI int tcc_add_sysinclude_path(TCCState *s, const char *pathname)
{
tcc_split_path(s, (void ***)&s->sysinclude_paths, &s->nb_sysinclude_paths, pathname);
return 0;
}
ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags, int filetype)
{
ElfW(Ehdr) ehdr;
int fd, ret, size;
parse_flags = 0;
#ifdef CONFIG_TCC_ASM
/* if .S file, define __ASSEMBLER__ like gcc does */
if ((filetype == TCC_FILETYPE_ASM) || (filetype == TCC_FILETYPE_ASM_PP)) {
tcc_define_symbol(s1, "__ASSEMBLER__", NULL);
parse_flags = PARSE_FLAG_ASM_FILE;
}
#endif
/* open the file */
ret = tcc_open(s1, filename);
if (ret < 0) {
if (flags & AFF_PRINT_ERROR)
tcc_error_noabort("file '%s' not found", filename);
return ret;
}
/* 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 (filetype == TCC_FILETYPE_C) {
/* C file assumed */
ret = tcc_compile(s1);
goto the_end;
}
#ifdef CONFIG_TCC_ASM
if (filetype == TCC_FILETYPE_ASM_PP) {
/* non preprocessed assembler */
ret = tcc_assemble(s1, 1);
goto the_end;
}
if (filetype == TCC_FILETYPE_ASM) {
/* 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) {
tcc_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) {
#ifdef TCC_IS_NATIVE
void *h;
h = dlopen(filename, RTLD_GLOBAL | RTLD_LAZY);
if (h)
#endif
ret = 0;
} else {
ret = tcc_load_dll(s1, fd, filename,
(flags & AFF_REFERENCED_DLL) != 0);
}
goto the_end;
}
#endif
tcc_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)
tcc_error_noabort("unrecognized file type");
the_end:
tcc_close();
return ret;
}
LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename, int filetype)
{
if (s->output_type == TCC_OUTPUT_PREPROCESS)
return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR | AFF_PREPROCESS, filetype);
else
return tcc_add_file_internal(s, filename, AFF_PRINT_ERROR, filetype);
}
LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
{
tcc_split_path(s, (void ***)&s->library_paths, &s->nb_library_paths, pathname);
return 0;
}
static int tcc_add_library_internal(TCCState *s, const char *fmt,
const char *filename, int flags, char **paths, int nb_paths)
{
char buf[1024];
int i;
for(i = 0; i < nb_paths; i++) {
snprintf(buf, sizeof(buf), fmt, paths[i], filename);
if (tcc_add_file_internal(s, buf, flags, TCC_FILETYPE_BINARY) == 0)
return 0;
}
return -1;
}
#ifndef TCC_TARGET_PE
/* 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)
{
return tcc_add_library_internal(s, "%s/%s", filename, flags,
s->library_paths, s->nb_library_paths);
}
#endif
ST_FUNC int tcc_add_crt(TCCState *s, const char *filename)
{
if (-1 == tcc_add_library_internal(s, "%s/%s",
filename, 0, s->crt_paths, s->nb_crt_paths))
tcc_error_noabort("file '%s' not found", filename);
return 0;
}
/* the library name is the same as the argument of the '-l' option */
LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
{
#ifdef TCC_TARGET_PE
const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
const char **pp = s->static_link ? libs + 4 : libs;
#else
const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
const char **pp = s->static_link ? libs + 1 : libs;
#endif
while (*pp) {
if (0 == tcc_add_library_internal(s, *pp,
libraryname, 0, s->library_paths, s->nb_library_paths))
return 0;
++pp;
}
return -1;
}
PUB_FUNC int tcc_add_library_err(TCCState *s, const char *libname)
{
int ret = tcc_add_library(s, libname);
if (ret < 0)
tcc_error_noabort("cannot find library 'lib%s'", libname);
return ret;
}
/* habdle #pragma comment(lib,) */
ST_FUNC void tcc_add_pragma_libs(TCCState *s1)
{
int i;
for (i = 0; i < s1->nb_pragma_libs; i++)
tcc_add_library_err(s1, s1->pragma_libs[i]);
}
LIBTCCAPI int tcc_add_symbol(TCCState *s, const char *name, const void *val)
{
#ifdef TCC_TARGET_PE
/* On x86_64 'val' might not be reachable with a 32bit offset.
So it is handled here as if it were in a DLL. */
pe_putimport(s, 0, name, (uintptr_t)val);
#else
add_elf_sym(symtab_section, (uintptr_t)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)
{
s->output_type = output_type;
if (!s->nostdinc) {
/* default include paths */
/* -isystem paths have already been handled */
tcc_add_sysinclude_path(s, CONFIG_TCC_SYSINCLUDEPATHS);
}
/* 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);
}
tcc_add_library_path(s, CONFIG_TCC_LIBPATHS);
#ifdef TCC_TARGET_PE
# ifdef _WIN32
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
#ifdef CONFIG_TCC_BCHECK
if (s->do_bounds_check && (output_type == TCC_OUTPUT_EXE))
{
/* force a bcheck.o linking */
addr_t func = TOK___bound_init;
Sym *sym = external_global_sym(func, &func_old_type, 0);
if (!sym->c)
put_extern_sym(sym, NULL, 0, 0);
}
#endif
if (s->output_type == TCC_OUTPUT_PREPROCESS)
print_defines();
return 0;
}
LIBTCCAPI void tcc_set_lib_path(TCCState *s, const char *path)
{
tcc_free(s->tcc_lib_path);
s->tcc_lib_path = tcc_strdup(path);
}
#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 */
static 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" },
{ offsetof(TCCState, ms_extensions), 0, "ms-extensions" },
{ offsetof(TCCState, old_struct_init_code), 0, "old-struct-init-code" },
{ offsetof(TCCState, dollars_in_identifiers), 0, "dollars-in-identifiers" },
};
/* set/reset a flag */
static 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 *val, const char **str)
{
const char *p, *q;
p = *str;
q = val;
while (*q) {
if (*p != *q)
return 0;
p++;
q++;
}
*str = 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, const 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 = p;
return 1;
}
static const char *skip_linker_arg(const char **str)
{
const char *s1 = *str;
const char *s2 = strchr(s1, ',');
*str = s2 ? s2++ : (s2 = s1 + strlen(s1));
return s2;
}
static char *copy_linker_arg(const char *p)
{
const char *q = p;
skip_linker_arg(&q);
return pstrncpy(tcc_malloc(q - p + 1), p, q - p);
}
/* set linker options */
static int tcc_set_linker(TCCState *s, const char *option)
{
while (option && *option) {
const char *p = option;
char *end = NULL;
int ignoring = 0;
if (link_option(option, "Bsymbolic", &p)) {
s->symbolic = 1;
} else if (link_option(option, "nostdlib", &p)) {
s->nostdlib = 1;
} else if (link_option(option, "fini=", &p)) {
s->fini_symbol = copy_linker_arg(p);
ignoring = 1;
} else if (link_option(option, "image-base=", &p)
|| link_option(option, "Ttext=", &p)) {
s->text_addr = strtoull(p, &end, 16);
s->has_text_addr = 1;
} else if (link_option(option, "init=", &p)) {
s->init_symbol = copy_linker_arg(p);
ignoring = 1;
} else if (link_option(option, "oformat=", &p)) {
#if defined(TCC_TARGET_PE)
if (strstart("pe-", &p)) {
#elif defined(TCC_TARGET_ARM64) || defined(TCC_TARGET_X86_64)
if (strstart("elf64-", &p)) {
#else
if (strstart("elf32-", &p)) {
#endif
s->output_format = TCC_OUTPUT_FORMAT_ELF;
} else if (!strcmp(p, "binary")) {
s->output_format = TCC_OUTPUT_FORMAT_BINARY;
#ifdef TCC_TARGET_COFF
} else if (!strcmp(p, "coff")) {
s->output_format = TCC_OUTPUT_FORMAT_COFF;
#endif
} else
goto err;
} else if (link_option(option, "as-needed", &p)) {
ignoring = 1;
} else if (link_option(option, "O", &p)) {
ignoring = 1;
} else if (link_option(option, "rpath=", &p)) {
s->rpath = copy_linker_arg(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 = copy_linker_arg(p);
#ifdef TCC_TARGET_PE
} else if (link_option(option, "file-alignment=", &p)) {
s->pe_file_align = strtoul(p, &end, 16);
} else if (link_option(option, "stack=", &p)) {
s->pe_stack_size = strtoul(p, &end, 10);
} 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
goto err;
#endif
} else
goto err;
if (ignoring && s->warn_unsupported) err: {
char buf[100], *e;
pstrcpy(buf, sizeof buf, e = copy_linker_arg(option)), tcc_free(e);
if (ignoring)
tcc_warning("unsupported linker option '%s'", buf);
else
tcc_error("unsupported linker option '%s'", buf);
}
option = skip_linker_arg(&p);
}
return 0;
}
typedef struct TCCOption {
const char *name;
uint16_t index;
uint16_t flags;
} TCCOption;
enum {
TCC_OPTION_HELP,
TCC_OPTION_I,
TCC_OPTION_D,
TCC_OPTION_U,
TCC_OPTION_P,
TCC_OPTION_L,
TCC_OPTION_B,
TCC_OPTION_l,
TCC_OPTION_bench,
TCC_OPTION_bt,
TCC_OPTION_b,
TCC_OPTION_g,
TCC_OPTION_c,
TCC_OPTION_dumpversion,
TCC_OPTION_d,
TCC_OPTION_float_abi,
TCC_OPTION_static,
TCC_OPTION_std,
TCC_OPTION_shared,
TCC_OPTION_soname,
TCC_OPTION_o,
TCC_OPTION_r,
TCC_OPTION_s,
TCC_OPTION_traditional,
TCC_OPTION_Wl,
TCC_OPTION_W,
TCC_OPTION_O,
TCC_OPTION_m,
TCC_OPTION_f,
TCC_OPTION_isystem,
TCC_OPTION_iwithprefix,
TCC_OPTION_nostdinc,
TCC_OPTION_nostdlib,
TCC_OPTION_print_search_dirs,
TCC_OPTION_rdynamic,
TCC_OPTION_pedantic,
TCC_OPTION_pthread,
TCC_OPTION_run,
TCC_OPTION_v,
TCC_OPTION_w,
TCC_OPTION_pipe,
TCC_OPTION_E,
TCC_OPTION_MD,
TCC_OPTION_MF,
TCC_OPTION_x,
};
#define TCC_OPTION_HAS_ARG 0x0001
#define TCC_OPTION_NOSEP 0x0002 /* cannot have space before option and arg */
static const TCCOption tcc_options[] = {
{ "h", TCC_OPTION_HELP, 0 },
{ "-help", TCC_OPTION_HELP, 0 },
{ "?", TCC_OPTION_HELP, 0 },
{ "I", TCC_OPTION_I, TCC_OPTION_HAS_ARG },
{ "D", TCC_OPTION_D, TCC_OPTION_HAS_ARG },
{ "U", TCC_OPTION_U, TCC_OPTION_HAS_ARG },
{ "P", TCC_OPTION_P, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
{ "L", TCC_OPTION_L, TCC_OPTION_HAS_ARG },
{ "B", TCC_OPTION_B, TCC_OPTION_HAS_ARG },
{ "l", TCC_OPTION_l, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
{ "bench", TCC_OPTION_bench, 0 },
#ifdef CONFIG_TCC_BACKTRACE
{ "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG },
#endif
#ifdef CONFIG_TCC_BCHECK
{ "b", TCC_OPTION_b, 0 },
#endif
{ "g", TCC_OPTION_g, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
{ "c", TCC_OPTION_c, 0 },
{ "dumpversion", TCC_OPTION_dumpversion, 0},
{ "d", TCC_OPTION_d, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
#ifdef TCC_TARGET_ARM
{ "mfloat-abi", TCC_OPTION_float_abi, TCC_OPTION_HAS_ARG },
#endif
{ "static", TCC_OPTION_static, 0 },
{ "std", TCC_OPTION_std, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
{ "shared", TCC_OPTION_shared, 0 },
{ "soname", TCC_OPTION_soname, TCC_OPTION_HAS_ARG },
{ "o", TCC_OPTION_o, TCC_OPTION_HAS_ARG },
{ "pedantic", TCC_OPTION_pedantic, 0},
{ "pthread", TCC_OPTION_pthread, 0},
{ "run", TCC_OPTION_run, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
{ "rdynamic", TCC_OPTION_rdynamic, 0 },
{ "r", TCC_OPTION_r, 0 },
{ "s", TCC_OPTION_s, 0 },
{ "traditional", TCC_OPTION_traditional, 0 },
{ "Wl,", TCC_OPTION_Wl, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
{ "W", TCC_OPTION_W, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
{ "O", TCC_OPTION_O, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
{ "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG },
{ "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
{ "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
{ "iwithprefix", TCC_OPTION_iwithprefix, TCC_OPTION_HAS_ARG },
{ "nostdinc", TCC_OPTION_nostdinc, 0 },
{ "nostdlib", TCC_OPTION_nostdlib, 0 },
{ "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
{ "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
{ "w", TCC_OPTION_w, 0 },
{ "pipe", TCC_OPTION_pipe, 0},
{ "E", TCC_OPTION_E, 0},
{ "MD", TCC_OPTION_MD, 0},
{ "MF", TCC_OPTION_MF, TCC_OPTION_HAS_ARG },
{ "x", TCC_OPTION_x, TCC_OPTION_HAS_ARG },
{ NULL, 0, 0 },
};
static void parse_option_D(TCCState *s1, const char *optarg)
{
char *sym = tcc_strdup(optarg);
char *value = strchr(sym, '=');
if (value)
*value++ = '\0';
tcc_define_symbol(s1, sym, value);
tcc_free(sym);
}
static void args_parser_add_file(TCCState *s, const char* filename, int filetype)
{
int len = strlen(filename);
char *p = tcc_malloc(len + 2);
if (filetype) {
*p = filetype;
}
else {
/* use a file extension to detect a filetype */
const char *ext = tcc_fileextension(filename);
if (ext[0]) {
ext++;
if (!strcmp(ext, "S"))
*p = TCC_FILETYPE_ASM_PP;
else
if (!strcmp(ext, "s"))
*p = TCC_FILETYPE_ASM;
else
if (!PATHCMP(ext, "c") || !PATHCMP(ext, "i"))
*p = TCC_FILETYPE_C;
else
*p = TCC_FILETYPE_BINARY;
}
else {
*p = TCC_FILETYPE_C;
}
}
strcpy(p+1, filename);
dynarray_add((void ***)&s->files, &s->nb_files, p);
}
PUB_FUNC int tcc_parse_args(TCCState *s, int argc, char **argv)
{
const TCCOption *popt;
const char *optarg, *r;
int run = 0;
int pthread = 0;
int optind = 0;
int filetype = 0;
/* collect -Wl options for input such as "-Wl,-rpath -Wl,<path>" */
CString linker_arg;
cstr_new(&linker_arg);
while (optind < argc) {
r = argv[optind++];
if (r[0] != '-' || r[1] == '\0') {
args_parser_add_file(s, r, filetype);
if (run) {
optind--;
/* argv[0] will be this file */
break;
}
continue;
}
/* find option in table */
for(popt = tcc_options; ; ++popt) {
const char *p1 = popt->name;
const char *r1 = r + 1;
if (p1 == NULL)
tcc_error("invalid option -- '%s'", r);
if (!strstart(p1, &r1))
continue;
optarg = r1;
if (popt->flags & TCC_OPTION_HAS_ARG) {
if (*r1 == '\0' && !(popt->flags & TCC_OPTION_NOSEP)) {
if (optind >= argc)
tcc_error("argument to '%s' is missing", r);
optarg = argv[optind++];
}
} else if (*r1 != '\0')
continue;
break;
}
switch(popt->index) {
case TCC_OPTION_HELP:
return 0;
case TCC_OPTION_I:
tcc_add_include_path(s, optarg);
break;
case TCC_OPTION_D:
parse_option_D(s, optarg);
break;
case TCC_OPTION_U:
tcc_undefine_symbol(s, optarg);
break;
case TCC_OPTION_L:
tcc_add_library_path(s, optarg);
break;
case TCC_OPTION_B:
/* set tcc utilities path (mainly for tcc development) */
tcc_set_lib_path(s, optarg);
break;
case TCC_OPTION_l:
args_parser_add_file(s, r, TCC_FILETYPE_BINARY);
s->nb_libraries++;
break;
case TCC_OPTION_pthread:
parse_option_D(s, "_REENTRANT");
pthread = 1;
break;
case TCC_OPTION_bench:
s->do_bench = 1;
break;
#ifdef CONFIG_TCC_BACKTRACE
case TCC_OPTION_bt:
tcc_set_num_callers(atoi(optarg));
break;
#endif
#ifdef CONFIG_TCC_BCHECK
case TCC_OPTION_b:
s->do_bounds_check = 1;
s->do_debug = 1;
break;
#endif
case TCC_OPTION_g:
s->do_debug = 1;
break;
case TCC_OPTION_c:
if (s->output_type)
tcc_warning("-c: some compiler action already specified (%d)", s->output_type);
s->output_type = TCC_OUTPUT_OBJ;
break;
case TCC_OPTION_d:
if (*optarg == 'D')
s->dflag = 1;
else {
if (s->warn_unsupported)
goto unsupported_option;
tcc_error("invalid option -- '%s'", r);
}
break;
#ifdef TCC_TARGET_ARM
case TCC_OPTION_float_abi:
/* tcc doesn't support soft float yet */
if (!strcmp(optarg, "softfp")) {
s->float_abi = ARM_SOFTFP_FLOAT;
tcc_undefine_symbol(s, "__ARM_PCS_VFP");
} else if (!strcmp(optarg, "hard"))
s->float_abi = ARM_HARD_FLOAT;
else
tcc_error("unsupported float abi '%s'", optarg);
break;
#endif
case TCC_OPTION_static:
s->static_link = 1;
break;
case TCC_OPTION_std:
/* silently ignore, a current purpose:
allow to use a tcc as a reference compiler for "make test" */
break;
case TCC_OPTION_shared:
if (s->output_type)
tcc_warning("-shared: some compiler action already specified (%d)", s->output_type);
s->output_type = TCC_OUTPUT_DLL;
break;
case TCC_OPTION_soname:
s->soname = tcc_strdup(optarg);
break;
case TCC_OPTION_m:
s->option_m = tcc_strdup(optarg);
break;
case TCC_OPTION_o:
if (s->outfile) {
tcc_warning("multiple -o option");
tcc_free(s->outfile);
}
s->outfile = tcc_strdup(optarg);
break;
case TCC_OPTION_r:
/* generate a .o merging several output files */
if (s->output_type)
tcc_warning("-r: some compiler action already specified (%d)", s->output_type);
s->option_r = 1;
s->output_type = TCC_OUTPUT_OBJ;
break;
case TCC_OPTION_isystem:
tcc_add_sysinclude_path(s, optarg);
break;
case TCC_OPTION_iwithprefix:
if (1) {
char buf[1024];
int buf_size = sizeof(buf)-1;
char *p = &buf[0];
char *sysroot = "{B}/";
int len = strlen(sysroot);
if (len > buf_size)
len = buf_size;
strncpy(p, sysroot, len);
p += len;
buf_size -= len;
len = strlen(optarg);
if (len > buf_size)
len = buf_size;
strncpy(p, optarg, len+1);
tcc_add_sysinclude_path(s, buf);
}
break;
case TCC_OPTION_nostdinc:
s->nostdinc = 1;
break;
case TCC_OPTION_nostdlib:
s->nostdlib = 1;
break;
case TCC_OPTION_print_search_dirs:
s->print_search_dirs = 1;
break;
case TCC_OPTION_run:
if (s->output_type)
tcc_warning("-run: some compiler action already specified (%d)", s->output_type);
s->output_type = TCC_OUTPUT_MEMORY;
tcc_set_options(s, optarg);
run = 1;
break;
case TCC_OPTION_v:
do ++s->verbose; while (*optarg++ == 'v');
break;
case TCC_OPTION_f:
if (tcc_set_flag(s, optarg, 1) < 0 && s->warn_unsupported)
goto unsupported_option;
break;
case TCC_OPTION_W:
if (tcc_set_warning(s, optarg, 1) < 0 &&
s->warn_unsupported)
goto unsupported_option;
break;
case TCC_OPTION_w:
s->warn_none = 1;
break;
case TCC_OPTION_rdynamic:
s->rdynamic = 1;
break;
case TCC_OPTION_Wl:
if (linker_arg.size)
--linker_arg.size, cstr_ccat(&linker_arg, ',');
cstr_cat(&linker_arg, optarg);
cstr_ccat(&linker_arg, '\0');
break;
case TCC_OPTION_E:
if (s->output_type)
tcc_warning("-E: some compiler action already specified (%d)", s->output_type);
s->output_type = TCC_OUTPUT_PREPROCESS;
break;
case TCC_OPTION_P:
s->Pflag = atoi(optarg) + 1;
break;
case TCC_OPTION_MD:
s->gen_deps = 1;
break;
case TCC_OPTION_MF:
s->deps_outfile = tcc_strdup(optarg);
break;
case TCC_OPTION_dumpversion:
printf ("%s\n", TCC_VERSION);
exit(0);
case TCC_OPTION_s:
s->do_strip = 1;
break;
case TCC_OPTION_traditional:
break;
case TCC_OPTION_x:
if (*optarg == 'c')
filetype = TCC_FILETYPE_C;
else
if (*optarg == 'a')
filetype = TCC_FILETYPE_ASM_PP;
else
if (*optarg == 'n')
filetype = 0;
else
tcc_warning("unsupported language '%s'", optarg);
break;
case TCC_OPTION_O:
if (1) {
int opt = atoi(optarg);
char *sym = "__OPTIMIZE__";
if (opt)
tcc_define_symbol(s, sym, 0);
else
tcc_undefine_symbol(s, sym);
}
break;
case TCC_OPTION_pedantic:
case TCC_OPTION_pipe:
/* ignored */
break;
default:
if (s->warn_unsupported) {
unsupported_option:
tcc_warning("unsupported option '%s'", r);
}
break;
}
}
if (s->output_type == 0)
s->output_type = TCC_OUTPUT_EXE;
if (pthread && s->output_type != TCC_OUTPUT_OBJ)
tcc_set_options(s, "-lpthread");
if (s->output_type == TCC_OUTPUT_EXE)
tcc_set_linker(s, (const char *)linker_arg.data);
cstr_free(&linker_arg);
return optind;
}
LIBTCCAPI int tcc_set_options(TCCState *s, const char *str)
{
const char *s1;
char **argv, *arg;
int argc, len;
int ret;
argc = 0, argv = NULL;
for(;;) {
while (is_space(*str))
str++;
if (*str == '\0')
break;
s1 = str;
while (*str != '\0' && !is_space(*str))
str++;
len = str - s1;
arg = tcc_malloc(len + 1);
pstrncpy(arg, s1, len);
dynarray_add((void ***)&argv, &argc, arg);
}
ret = tcc_parse_args(s, argc, argv);
dynarray_reset(&argv, &argc);
return ret;
}
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;
fprintf(stderr, "%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);
}
PUB_FUNC void tcc_set_environment(TCCState *s)
{
char * path;
path = getenv("C_INCLUDE_PATH");
if(path != NULL) {
tcc_add_include_path(s, path);
}
path = getenv("CPATH");
if(path != NULL) {
tcc_add_include_path(s, path);
}
path = getenv("LIBRARY_PATH");
if(path != NULL) {
tcc_add_library_path(s, path);
}
}
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