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9712aff9c0
tinycc/libtcc.c
herman ten brugge 9712aff9c0 Fix gcc testsuite problems 
arm-gen.c:
- is_hgen_float_aggr/gfunc_sret: Fix for zero sized structs

arm64-gen.c:
- arm64_ldrs: Fix for zero sized structs
- arm64_sym: Use R_AARCH64_ABS64 instead of R_AARCH64_MOVW_UABS_G*
             This has same speed. See 117_gcc_test.c(tst_adr)
- load: Fix for zero sized structs and add VT_CONST | VT_LVAL support
- store: add VT_CONST | VT_LVAL support
- arm64_gen_bl_or_b: Allow branch. See 117_gcc_test.c(tst_branch)
- gen_bounds_prolog: Use R_AARCH64_ABS64 for bound checking
- gen_bounds_epilog: Use R_AARCH64_ABS64 for bound checking
- gfunc_call: Allow large stack
- arm64_gen_opic: Do not crash on large shift

riscv64-gen.c:
- load: Move type_size call. (move_reg set sv.type.ref NULL for VT_STRUCT)
- gfunc_call: Allow large stack
- gen_opil: Fix word mode calls

x86_64-gen.c:
- load: Fix for zero sized structs

libtcc.c:
- Add some defines for gcc testsuite (only most common)

tccgen.c:
- parse_builtin_params: Add types for builtins
- unary: Add builtins: __builtin_abort __builtin_memcpy __builtin_memcmp
                       __builtin_memmove __builtin_memset __builtin_strlen
                       __builtin_strcpy __builtin_strncpy __builtin_strcmp
                       __builtin_strncmp __builtin_strcat __builtin_strchr
                       __builtin_strdup __builtin_malloc __builtin_realloc
                       __builtin_calloc __builtin_free __builtin_alloca
- decl_initializer: Fix crash. See 60_errors_and_warnings(test_var_array)

tccmacho.c:
- Remove 'ret = 0'

tcctok.h:
- Add builtin/bound checking tokens

tests/gcctestsuite.sh:
- Add more counters and run execute tests

tests/bug.c
- Some remaining bugs in tcc (not complete)

tests/tests2/60_errors_and_warnings:
- Add test_var_array test

tests/tests2/117_gcc_test:
- New test

Results of gcctestsuite.sh for all targets:

linux:
x86_64: 3036 test(s) ok.  328 test(s) failed.  24 test(s) exe failed.
i386:   3037 test(s) ok.  327 test(s) failed.  24 test(s) exe failed.
arm:    2986 test(s) ok.  362 test(s) failed.  40 test(s) exe failed.
arm64:  2996 test(s) ok.  367 test(s) failed.  25 test(s) exe failed.
macos:  3031 test(s) ok.  332 test(s) failed.  25 test(s) exe failed.
riscv:  2948 test(s) ok.  401 test(s) failed.  39 test(s) exe failed.

windows:
x86_64: 3027 test(s) ok.  333 test(s) failed.  28 test(s) exe failed.
i386:   3029 test(s) ok.  331 test(s) failed.  28 test(s) exe failed.

linux with bounds checking:
x86_64: 3030 test(s) ok.  328 test(s) failed.  30 test(s) exe failed.
i386:   3028 test(s) ok.  327 test(s) failed.  33 test(s) exe failed.
arm:    2997 test(s) ok.  362 test(s) failed.  29 test(s) exe failed.
arm64:  2986 test(s) ok.  367 test(s) failed.  35 test(s) exe failed.
macos:  3026 test(s) ok.  332 test(s) failed.  30 test(s) exe failed.
riscv:  2936 test(s) ok.  409 test(s) failed.  43 test(s) exe failed.

windows with bounds checking:
x86_64: 3029 test(s) ok.  332 test(s) failed.  27 test(s) exe failed.
i386:   3027 test(s) ok.  331 test(s) failed.  30 test(s) exe failed.

all: fail for complex and vector types, nested functions
     and a lot of gcc defines/buitins.
arm/arm64/riscv: fail for asm and alloca.
riscv: fail with 'error: unimp: store(struct)'
2020-07-05 14:01:50 +02:00

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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
*/
#if !defined ONE_SOURCE || ONE_SOURCE
#include "tccpp.c"
#include "tccgen.c"
#include "tccelf.c"
#include "tccrun.c"
#ifdef TCC_TARGET_I386
#include "i386-gen.c"
#include "i386-link.c"
#include "i386-asm.c"
#elif defined(TCC_TARGET_ARM)
#include "arm-gen.c"
#include "arm-link.c"
#include "arm-asm.c"
#elif defined(TCC_TARGET_ARM64)
#include "arm64-gen.c"
#include "arm64-link.c"
#include "arm-asm.c"
#elif defined(TCC_TARGET_C67)
#include "c67-gen.c"
#include "c67-link.c"
#include "tcccoff.c"
#elif defined(TCC_TARGET_X86_64)
#include "x86_64-gen.c"
#include "x86_64-link.c"
#include "i386-asm.c"
#elif defined(TCC_TARGET_RISCV64)
#include "riscv64-gen.c"
#include "riscv64-link.c"
#include "riscv64-asm.c"
#else
#error unknown target
#endif
#ifdef CONFIG_TCC_ASM
#include "tccasm.c"
#endif
#ifdef TCC_TARGET_PE
#include "tccpe.c"
#endif
#ifdef TCC_TARGET_MACHO
#include "tccmacho.c"
#endif
#endif /* ONE_SOURCE */
#include "tcc.h"
/********************************************************/
/* global variables */
/* XXX: get rid of this ASAP (or maybe not) */
ST_DATA struct TCCState *tcc_state;
#ifdef MEM_DEBUG
static int nb_states;
#endif
/********************************************************/
#ifdef _WIN32
ST_FUNC 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 > 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
#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
/********************************************************/
#ifndef CONFIG_TCC_SEMLOCK
#define WAIT_SEM()
#define POST_SEM()
#elif defined _WIN32
static int tcc_sem_init;
static CRITICAL_SECTION tcc_cr;
static void wait_sem(void)
{
if (!tcc_sem_init)
InitializeCriticalSection(&tcc_cr), tcc_sem_init = 1;
EnterCriticalSection(&tcc_cr);
}
#define WAIT_SEM() wait_sem()
#define POST_SEM() LeaveCriticalSection(&tcc_cr);
#elif defined __APPLE__
/* Half-compatible MacOS doesn't have non-shared (process local)
semaphores. Use the dispatch framework for lightweight locks. */
#include <dispatch/dispatch.h>
static int tcc_sem_init;
static dispatch_semaphore_t tcc_sem;
static void wait_sem(void)
{
if (!tcc_sem_init)
tcc_sem = dispatch_semaphore_create(1), tcc_sem_init = 1;
dispatch_semaphore_wait(tcc_sem, DISPATCH_TIME_FOREVER);
}
#define WAIT_SEM() wait_sem()
#define POST_SEM() dispatch_semaphore_signal(tcc_sem)
#else
#include <semaphore.h>
static int tcc_sem_init;
static sem_t tcc_sem;
static void wait_sem(void)
{
if (!tcc_sem_init)
sem_init(&tcc_sem, 0, 1), tcc_sem_init = 1;
while (sem_wait (&tcc_sem) < 0 && errno == EINTR);
}
#define WAIT_SEM() wait_sem()
#define POST_SEM() sem_post(&tcc_sem)
#endif
/********************************************************/
/* copy a string and truncate it. */
ST_FUNC char *pstrcpy(char *buf, size_t 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. */
ST_FUNC char *pstrcat(char *buf, size_t buf_size, const char *s)
{
size_t len;
len = strlen(buf);
if (len < buf_size)
pstrcpy(buf + len, buf_size - len, s);
return buf;
}
ST_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;
}
#else
#define MEM_DEBUG_MAGIC1 0xFEEDDEB1
#define MEM_DEBUG_MAGIC2 0xFEEDDEB2
#define MEM_DEBUG_MAGIC3 0xFEEDDEB3
#define MEM_DEBUG_FILE_LEN 40
#define MEM_DEBUG_CHECK3(header) \
((mem_debug_header_t*)((char*)header + header->size))->magic3
#define MEM_USER_PTR(header) \
((char *)header + offsetof(mem_debug_header_t, magic3))
#define MEM_HEADER_PTR(ptr) \
(mem_debug_header_t *)((char*)ptr - offsetof(mem_debug_header_t, magic3))
struct mem_debug_header {
unsigned magic1;
unsigned size;
struct mem_debug_header *prev;
struct mem_debug_header *next;
int line_num;
char file_name[MEM_DEBUG_FILE_LEN + 1];
unsigned magic2;
ALIGNED(16) unsigned magic3;
};
typedef struct mem_debug_header mem_debug_header_t;
static mem_debug_header_t *mem_debug_chain;
static unsigned mem_cur_size;
static unsigned mem_max_size;
static mem_debug_header_t *malloc_check(void *ptr, const char *msg)
{
mem_debug_header_t * header = MEM_HEADER_PTR(ptr);
if (header->magic1 != MEM_DEBUG_MAGIC1 ||
header->magic2 != MEM_DEBUG_MAGIC2 ||
MEM_DEBUG_CHECK3(header) != MEM_DEBUG_MAGIC3 ||
header->size == (unsigned)-1) {
fprintf(stderr, "%s check failed\n", msg);
if (header->magic1 == MEM_DEBUG_MAGIC1)
fprintf(stderr, "%s:%u: block allocated here.\n",
header->file_name, header->line_num);
exit(1);
}
return header;
}
PUB_FUNC void *tcc_malloc_debug(unsigned long size, const char *file, int line)
{
int ofs;
mem_debug_header_t *header;
header = malloc(sizeof(mem_debug_header_t) + size);
if (!header)
_tcc_error("memory full (malloc)");
header->magic1 = MEM_DEBUG_MAGIC1;
header->magic2 = MEM_DEBUG_MAGIC2;
header->size = size;
MEM_DEBUG_CHECK3(header) = MEM_DEBUG_MAGIC3;
header->line_num = line;
ofs = strlen(file) - MEM_DEBUG_FILE_LEN;
strncpy(header->file_name, file + (ofs > 0 ? ofs : 0), 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;
mem_cur_size += size;
if (mem_cur_size > mem_max_size)
mem_max_size = mem_cur_size;
return MEM_USER_PTR(header);
}
PUB_FUNC void tcc_free_debug(void *ptr)
{
mem_debug_header_t *header;
if (!ptr)
return;
header = malloc_check(ptr, "tcc_free");
mem_cur_size -= header->size;
header->size = (unsigned)-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(header);
}
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)
return tcc_malloc_debug(size, file, line);
header = malloc_check(ptr, "tcc_realloc");
mem_cur_size -= header->size;
mem_debug_chain_update = (header == mem_debug_chain);
header = realloc(header, sizeof(mem_debug_header_t) + size);
if (!header)
_tcc_error("memory full (realloc)");
header->size = size;
MEM_DEBUG_CHECK3(header) = MEM_DEBUG_MAGIC3;
if (header->next)
header->next->prev = header;
if (header->prev)
header->prev->next = header;
if (mem_debug_chain_update)
mem_debug_chain = header;
mem_cur_size += size;
if (mem_cur_size > mem_max_size)
mem_max_size = mem_cur_size;
return MEM_USER_PTR(header);
}
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_memcheck(void)
{
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, "%s:%u: error: %u bytes leaked\n",
header->file_name, header->line_num, header->size);
header = header->next;
}
#if MEM_DEBUG-0 == 2
exit(2);
#endif
}
}
#endif /* MEM_DEBUG */
#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 = *(void ***)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 *));
*(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[0]; ++p) {
if (c == '{' && p[1] && p[2] == '}') {
c = p[1], p += 2;
if (c == 'B')
cstr_cat(&str, s->tcc_lib_path, -1);
if (c == 'f' && file) {
/* substitute current file's dir */
const char *f = file->true_filename;
const char *b = tcc_basename(f);
if (b > f)
cstr_cat(&str, f, b - f - 1);
else
cstr_cat(&str, ".", 1);
}
} else {
cstr_ccat(&str, c);
}
}
if (str.size) {
cstr_ccat(&str, '\0');
dynarray_add(p_ary, p_nb_ary, tcc_strdup(str.data));
}
cstr_free(&str);
in = p+1;
} while (*p);
}
/********************************************************/
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);
}
#define ERROR_WARN 0
#define ERROR_NOABORT 1
#define ERROR_ERROR 2
PUB_FUNC void tcc_enter_state(TCCState *s1)
{
WAIT_SEM();
tcc_state = s1;
}
PUB_FUNC void tcc_exit_state(void)
{
tcc_state = NULL;
POST_SEM();
}
static void error1(int mode, const char *fmt, va_list ap)
{
char buf[2048];
BufferedFile **pf, *f;
TCCState *s1 = tcc_state;
buf[0] = '\0';
if (s1 == NULL)
/* can happen only if called from tcc_malloc(): 'out of memory' */
goto no_file;
if (s1 && !s1->error_set_jmp_enabled)
/* tcc_state just was set by tcc_enter_state() */
tcc_exit_state();
if (mode == ERROR_WARN) {
if (s1->warn_none)
return;
if (s1->warn_error)
mode = ERROR_ERROR;
}
f = NULL;
if (s1->error_set_jmp_enabled) { /* we're called while parsing a file */
/* 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);
strcat_printf(buf, sizeof(buf), "%s:%d: ",
f->filename, f->line_num - !!(tok_flags & TOK_FLAG_BOL));
} else if (s1->current_filename) {
strcat_printf(buf, sizeof(buf), "%s: ", s1->current_filename);
}
no_file:
if (0 == buf[0])
strcat_printf(buf, sizeof(buf), "tcc: ");
if (mode == ERROR_WARN)
strcat_printf(buf, sizeof(buf), "warning: ");
else
strcat_printf(buf, sizeof(buf), "error: ");
strcat_vprintf(buf, sizeof(buf), fmt, ap);
if (!s1 || !s1->error_func) {
/* default case: stderr */
if (s1 && s1->output_type == TCC_OUTPUT_PREPROCESS && s1->ppfp == stdout)
/* print a newline during tcc -E */
printf("\n"), fflush(stdout);
fflush(stdout); /* flush -v output */
fprintf(stderr, "%s\n", buf);
fflush(stderr); /* print error/warning now (win32) */
} else {
s1->error_func(s1->error_opaque, buf);
}
if (s1) {
if (mode != ERROR_WARN)
s1->nb_errors++;
if (mode != ERROR_ERROR)
return;
if (s1->error_set_jmp_enabled)
longjmp(s1->error_jmp_buf, 1);
}
exit(1);
}
LIBTCCAPI void tcc_set_error_func(TCCState *s, void *error_opaque, TCCErrorFunc error_func)
{
s->error_opaque = error_opaque;
s->error_func = error_func;
}
LIBTCCAPI TCCErrorFunc tcc_get_error_func(TCCState *s)
{
return s->error_func;
}
LIBTCCAPI void *tcc_get_error_opaque(TCCState *s)
{
return s->error_opaque;
}
/* error without aborting current compilation */
PUB_FUNC void _tcc_error_noabort(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
error1(ERROR_NOABORT, fmt, ap);
va_end(ap);
}
PUB_FUNC void _tcc_error(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
for (;;) error1(ERROR_ERROR, fmt, ap);
}
PUB_FUNC void _tcc_warning(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
error1(ERROR_WARN, 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->true_filename = bf->filename;
bf->line_num = 1;
bf->ifdef_stack_ptr = s1->ifdef_stack_ptr;
bf->fd = -1;
bf->prev = file;
file = bf;
tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
}
ST_FUNC void tcc_close(void)
{
TCCState *s1 = tcc_state;
BufferedFile *bf = file;
if (bf->fd > 0) {
close(bf->fd);
total_lines += bf->line_num;
}
if (bf->true_filename != bf->filename)
tcc_free(bf->true_filename);
file = bf->prev;
tcc_free(bf);
}
static 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);
return fd;
}
ST_FUNC int tcc_open(TCCState *s1, const char *filename)
{
int fd = _tcc_open(s1, filename);
if (fd < 0)
return -1;
tcc_open_bf(s1, filename, 0);
file->fd = fd;
return 0;
}
/* compile the file opened in 'file'. Return non zero if errors. */
static int tcc_compile(TCCState *s1, int filetype, const char *str, int fd)
{
/* Here we enter the code section where we use the global variables for
parsing and code generation (tccpp.c, tccgen.c, <target>-gen.c).
Other threads need to wait until we're done.
Alternatively we could use thread local storage for those global
variables, which may or may not have advantages */
tcc_enter_state(s1);
if (setjmp(s1->error_jmp_buf) == 0) {
int is_asm;
s1->error_set_jmp_enabled = 1;
s1->nb_errors = 0;
if (fd == -1) {
int len = strlen(str);
tcc_open_bf(s1, "<string>", len);
memcpy(file->buffer, str, len);
} else {
tcc_open_bf(s1, str, 0);
file->fd = fd;
}
is_asm = !!(filetype & (AFF_TYPE_ASM|AFF_TYPE_ASMPP));
tccelf_begin_file(s1);
preprocess_start(s1, is_asm);
tccgen_init(s1);
if (s1->output_type == TCC_OUTPUT_PREPROCESS) {
tcc_preprocess(s1);
} else if (is_asm) {
#ifdef CONFIG_TCC_ASM
tcc_assemble(s1, !!(filetype & AFF_TYPE_ASMPP));
#else
tcc_error_noabort("asm not supported");
#endif
} else {
tccgen_compile(s1);
}
}
s1->error_set_jmp_enabled = 0;
tccgen_finish(s1);
preprocess_end(s1);
tcc_exit_state();
tccelf_end_file(s1);
return s1->nb_errors != 0 ? -1 : 0;
}
LIBTCCAPI int tcc_compile_string(TCCState *s, const char *str)
{
return tcc_compile(s, s->filetype, str, -1);
}
/* 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)
{
if (!value)
value = "1";
cstr_printf(&s1->cmdline_defs, "#define %s %s\n", sym, value);
}
/* undefine a preprocessor symbol */
LIBTCCAPI void tcc_undefine_symbol(TCCState *s1, const char *sym)
{
cstr_printf(&s1->cmdline_defs, "#undef %s\n", sym);
}
LIBTCCAPI TCCState *tcc_new(void)
{
TCCState *s;
s = tcc_mallocz(sizeof(TCCState));
if (!s)
return NULL;
#ifdef MEM_DEBUG
++nb_states;
#endif
#undef gnu_ext
s->gnu_ext = 1;
s->tcc_ext = 1;
s->nocommon = 1;
s->dollars_in_identifiers = 1; /*on by default like in gcc/clang*/
s->cversion = 199901; /* default unless -std=c11 is supplied */
s->warn_implicit_function_declaration = 1;
s->ms_extensions = 1;
#ifdef CHAR_IS_UNSIGNED
s->char_is_unsigned = 1;
#endif
#ifdef TCC_TARGET_I386
s->seg_size = 32;
#endif
/* enable this if you want symbols with leading underscore on windows: */
#if defined TCC_TARGET_MACHO /* || defined TCC_TARGET_PE */
s->leading_underscore = 1;
#endif
s->ppfp = stdout;
/* might be used in error() before preprocess_start() */
s->include_stack_ptr = s->include_stack;
tccelf_new(s);
#ifdef _WIN32
tcc_set_lib_path_w32(s);
#else
tcc_set_lib_path(s, CONFIG_TCCDIR);
#endif
{
/* 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);
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);
#elif defined TCC_TARGET_C67
tcc_define_symbol(s, "__C67__", NULL);
#elif defined TCC_TARGET_RISCV64
tcc_define_symbol(s, "__riscv", NULL);
tcc_define_symbol(s, "__riscv_xlen", "64");
tcc_define_symbol(s, "__riscv_flen", "64");
tcc_define_symbol(s, "__riscv_div", NULL);
tcc_define_symbol(s, "__riscv_mul", NULL);
tcc_define_symbol(s, "__riscv_fdiv", NULL);
tcc_define_symbol(s, "__riscv_fsqrt", NULL);
tcc_define_symbol(s, "__riscv_float_abi_double", NULL);
#endif
#ifdef TCC_TARGET_PE
tcc_define_symbol(s, "_WIN32", NULL);
tcc_define_symbol(s, "__declspec(x)", "__attribute__((x))");
tcc_define_symbol(s, "__cdecl", "");
# 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__)
tcc_define_symbol(s, "__FreeBSD__", "__FreeBSD__");
/* No 'Thread Storage Local' on FreeBSD with tcc */
tcc_define_symbol(s, "__NO_TLS", NULL);
# endif
# if defined(__FreeBSD_kernel__)
tcc_define_symbol(s, "__FreeBSD_kernel__", NULL);
# endif
# if defined(__NetBSD__)
tcc_define_symbol(s, "__NetBSD__", "__NetBSD__");
# endif
# if defined(__OpenBSD__)
tcc_define_symbol(s, "__OpenBSD__", "__OpenBSD__");
# endif
#endif
/* TinyCC & gcc defines */
#if PTR_SIZE == 4
/* 32bit systems. */
tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned int");
tcc_define_symbol(s, "__PTRDIFF_TYPE__", "int");
tcc_define_symbol(s, "__ILP32__", NULL);
#elif LONG_SIZE == 4
/* 64bit Windows. */
tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long long");
tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long long");
tcc_define_symbol(s, "__LLP64__", NULL);
#else
/* Other 64bit systems. */
tcc_define_symbol(s, "__SIZE_TYPE__", "unsigned long");
tcc_define_symbol(s, "__PTRDIFF_TYPE__", "long");
tcc_define_symbol(s, "__LP64__", NULL);
#endif
tcc_define_symbol(s, "__SIZEOF_POINTER__", PTR_SIZE == 4 ? "4" : "8");
#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__) \
|| defined(__NetBSD__) || defined(__OpenBSD__)
tcc_define_symbol(s, "__WINT_TYPE__", "int");
# ifdef __FreeBSD__
/* define __GNUC__ to have some useful stuff from sys/cdefs.h
that are unconditionally used in FreeBSDs other system headers :/ */
tcc_define_symbol(s, "__GNUC__", "2");
tcc_define_symbol(s, "__GNUC_MINOR__", "7");
tcc_define_symbol(s, "__builtin_alloca", "alloca");
# endif
# else
tcc_define_symbol(s, "__WINT_TYPE__", "unsigned int");
/* 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");
# endif
/* Some GCC builtins that are simple to express as macros. */
tcc_define_symbol(s, "__builtin_extract_return_addr(x)", "x");
#endif /* ndef TCC_TARGET_PE */
#ifdef TCC_TARGET_MACHO
/* emulate APPLE-GCC to make libc's headerfiles compile: */
tcc_define_symbol(s, "__APPLE__", "1");
tcc_define_symbol(s, "__GNUC__", "4"); /* darwin emits warning on GCC<4 */
tcc_define_symbol(s, "__APPLE_CC__", "1"); /* for <TargetConditionals.h> */
tcc_define_symbol(s, "_DONT_USE_CTYPE_INLINE_", "1");
tcc_define_symbol(s, "__builtin_alloca", "alloca"); /* as we claim GNUC */
/* used by math.h */
tcc_define_symbol(s, "__builtin_huge_val()", "1e500");
tcc_define_symbol(s, "__builtin_huge_valf()", "1e50f");
tcc_define_symbol(s, "__builtin_huge_vall()", "1e5000L");
tcc_define_symbol(s, "__builtin_nanf(ignored_string)", "__nan()");
/* used by _fd_def.h */
tcc_define_symbol(s, "__builtin_bzero(p, ignored_size)", "bzero(p, sizeof(*(p)))");
/* used by floats.h to implement FLT_ROUNDS C99 macro. 1 == to nearest */
tcc_define_symbol(s, "__builtin_flt_rounds()", "1");
/* avoids usage of GCC/clang specific builtins in libc-headerfiles: */
tcc_define_symbol(s, "__FINITE_MATH_ONLY__", "1");
tcc_define_symbol(s, "_FORTIFY_SOURCE", "0");
#endif /* ndef TCC_TARGET_MACHO */
if (PTR_SIZE == 4) {
tcc_define_symbol(s, "__SIZEOF_LONG__", "4");
tcc_define_symbol(s, "__LONG_MAX__", "0x7fffffffL");
}
else {
tcc_define_symbol(s, "__SIZEOF_LONG__", "8");
tcc_define_symbol(s, "__LONG_MAX__", "0x7fffffffffffffffL");
}
tcc_define_symbol(s, "__SIZEOF_INT__", "4");
tcc_define_symbol(s, "__SIZEOF_LONG_LONG__", "8");
tcc_define_symbol(s, "__CHAR_BIT__", "8");
tcc_define_symbol(s, "__ORDER_LITTLE_ENDIAN__", "1234");
tcc_define_symbol(s, "__ORDER_BIG_ENDIAN__", "4321");
tcc_define_symbol(s, "__BYTE_ORDER__", "__ORDER_LITTLE_ENDIAN__");
tcc_define_symbol(s, "__INT_MAX__", "0x7fffffff");
tcc_define_symbol(s, "__LONG_LONG_MAX__", "0x7fffffffffffffffLL");
tcc_define_symbol(s, "__builtin_offsetof(type,field)", "((unsigned long) &((type *)0)->field)");
return s;
}
LIBTCCAPI void tcc_delete(TCCState *s1)
{
/* free sections */
tccelf_delete(s1);
/* 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->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);
dynarray_reset(&s1->argv, &s1->argc);
cstr_free(&s1->cmdline_defs);
cstr_free(&s1->cmdline_incl);
#ifdef TCC_IS_NATIVE
/* free runtime memory */
tcc_run_free(s1);
#endif
tcc_free(s1);
#ifdef MEM_DEBUG
if (0 == --nb_states)
tcc_memcheck();
#endif
}
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->cversion == 201112) {
tcc_undefine_symbol(s, "__STDC_VERSION__");
tcc_define_symbol(s, "__STDC_VERSION__", "201112L");
tcc_define_symbol(s, "__STDC_NO_ATOMICS__", NULL);
tcc_define_symbol(s, "__STDC_NO_COMPLEX__", NULL);
tcc_define_symbol(s, "__STDC_NO_THREADS__", NULL);
#ifndef TCC_TARGET_PE
/* on Linux, this conflicts with a define introduced by
/usr/include/stdc-predef.h included by glibc libs
tcc_define_symbol(s, "__STDC_ISO_10646__", "201605L"); */
tcc_define_symbol(s, "__STDC_UTF_16__", NULL);
tcc_define_symbol(s, "__STDC_UTF_32__", NULL);
#endif
}
if (s->optimize > 0)
tcc_define_symbol(s, "__OPTIMIZE__", NULL);
if (s->option_pthread)
tcc_define_symbol(s, "_REENTRANT", 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 (s->do_bounds_check) {
/* if bound checking, then add corresponding sections */
tccelf_bounds_new(s);
/* define symbol */
tcc_define_symbol(s, "__BOUNDS_CHECKING_ON", NULL);
}
#endif
if (s->do_debug) {
/* add debug sections */
tccelf_stab_new(s);
}
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, &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) {
#ifndef TCC_TARGET_MACHO
/* Mach-O with LC_MAIN doesn't need any crt startup code. */
if (output_type != TCC_OUTPUT_DLL)
tcc_add_crt(s, "crt1.o");
tcc_add_crt(s, "crti.o");
#endif
}
#endif
return 0;
}
LIBTCCAPI int tcc_add_include_path(TCCState *s, const char *pathname)
{
tcc_split_path(s, &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, &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 fd, ret;
/* open the file */
fd = _tcc_open(s1, filename);
if (fd < 0) {
if (flags & AFF_PRINT_ERROR)
tcc_error_noabort("file '%s' not found", filename);
return -1;
}
s1->current_filename = filename;
if (flags & AFF_TYPE_BIN) {
ElfW(Ehdr) ehdr;
int obj_type;
obj_type = tcc_object_type(fd, &ehdr);
lseek(fd, 0, SEEK_SET);
#ifdef TCC_TARGET_MACHO
if (0 == obj_type && 0 == strcmp(tcc_fileextension(filename), ".dylib"))
obj_type = AFF_BINTYPE_DYN;
#endif
switch (obj_type) {
case AFF_BINTYPE_REL:
ret = tcc_load_object_file(s1, fd, 0);
break;
#ifndef TCC_TARGET_PE
case AFF_BINTYPE_DYN:
if (s1->output_type == TCC_OUTPUT_MEMORY) {
ret = 0;
#ifdef TCC_IS_NATIVE
if (NULL == dlopen(filename, RTLD_GLOBAL | RTLD_LAZY))
ret = -1;
#endif
} else {
#ifndef TCC_TARGET_MACHO
ret = tcc_load_dll(s1, fd, filename,
(flags & AFF_REFERENCED_DLL) != 0);
#else
ret = macho_load_dll(s1, fd, filename,
(flags & AFF_REFERENCED_DLL) != 0);
#endif
}
break;
#endif
case AFF_BINTYPE_AR:
ret = tcc_load_archive(s1, fd, !(flags & AFF_WHOLE_ARCHIVE));
break;
#ifdef TCC_TARGET_COFF
case AFF_BINTYPE_C67:
ret = tcc_load_coff(s1, fd);
break;
#endif
default:
#ifdef TCC_TARGET_PE
ret = pe_load_file(s1, filename, fd);
#elif defined(TCC_TARGET_MACHO)
ret = -1;
#else
/* as GNU ld, consider it is an ld script if not recognized */
ret = tcc_load_ldscript(s1, fd);
#endif
if (ret < 0)
tcc_error_noabort("%s: unrecognized file type %d", filename,
obj_type);
break;
}
close(fd);
} else {
/* update target deps */
dynarray_add(&s1->target_deps, &s1->nb_target_deps, tcc_strdup(filename));
ret = tcc_compile(s1, flags, filename, fd);
}
s1->current_filename = NULL;
return ret;
}
LIBTCCAPI int tcc_add_file(TCCState *s, const char *filename)
{
int filetype = s->filetype;
if (0 == (filetype & AFF_TYPE_MASK)) {
/* use a file extension to detect a filetype */
const char *ext = tcc_fileextension(filename);
if (ext[0]) {
ext++;
if (!strcmp(ext, "S"))
filetype = AFF_TYPE_ASMPP;
else if (!strcmp(ext, "s"))
filetype = AFF_TYPE_ASM;
else if (!PATHCMP(ext, "c") || !PATHCMP(ext, "i"))
filetype = AFF_TYPE_C;
else
filetype |= AFF_TYPE_BIN;
} else {
filetype = AFF_TYPE_C;
}
}
return tcc_add_file_internal(s, filename, filetype | AFF_PRINT_ERROR);
}
LIBTCCAPI int tcc_add_library_path(TCCState *s, const char *pathname)
{
tcc_split_path(s, &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 | AFF_TYPE_BIN) == 0)
return 0;
}
return -1;
}
/* 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);
}
#ifndef TCC_TARGET_PE
ST_FUNC int tcc_add_crt(TCCState *s1, const char *filename)
{
if (-1 == tcc_add_library_internal(s1, "%s/%s",
filename, 0, s1->crt_paths, s1->nb_crt_paths))
tcc_error_noabort("file '%s' not found", filename);
return 0;
}
#endif
/* the library name is the same as the argument of the '-l' option */
LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
{
#if defined 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;
#elif defined TCC_TARGET_MACHO
const char *libs[] = { "%s/lib%s.dylib", "%s/lib%s.a", NULL };
const char **pp = s->static_link ? libs + 1 : libs;
#else
const char *libs[] = { "%s/lib%s.so", "%s/lib%s.a", NULL };
const char **pp = s->static_link ? libs + 1 : libs;
#endif
int flags = s->filetype & AFF_WHOLE_ARCHIVE;
while (*pp) {
if (0 == tcc_add_library_internal(s, *pp,
libraryname, flags, s->library_paths, s->nb_library_paths))
return 0;
++pp;
}
return -1;
}
PUB_FUNC int tcc_add_library_err(TCCState *s1, const char *libname)
{
int ret = tcc_add_library(s1, libname);
if (ret < 0)
tcc_error_noabort("library '%s' not found", libname);
return ret;
}
/* handle #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 *s1, 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(s1, 0, name, (uintptr_t)val);
#else
set_elf_sym(symtab_section, (uintptr_t)val, 0,
ELFW(ST_INFO)(STB_GLOBAL, STT_NOTYPE), 0,
SHN_ABS, name);
#endif
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 int no_flag(const char **pp)
{
const char *p = *pp;
if (*p != 'n' || *++p != 'o' || *++p != '-')
return 0;
*pp = p + 1;
return 1;
}
ST_FUNC int set_flag(TCCState *s, const FlagDef *flags, const char *name)
{
int value, ret;
const FlagDef *p;
const char *r;
value = 1;
r = name;
if (no_flag(&r))
value = 0;
for (ret = -1, p = flags; p->name; ++p) {
if (ret) {
if (strcmp(r, p->name))
continue;
} else {
if (0 == (p->flags & WD_ALL))
continue;
}
if (p->offset) {
*((unsigned char *)s + p->offset) =
p->flags & FD_INVERT ? !value : value;
if (ret)
return 0;
} else {
ret = 0;
}
}
return ret;
}
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;
int ret;
/* there should be 1 or 2 dashes */
if (*str++ != '-')
return 0;
if (*str == '-')
str++;
/* then str & val should match (potentially up to '=') */
p = str;
q = val;
ret = 1;
if (q[0] == '?') {
++q;
if (no_flag(&p))
ret = -1;
}
while (*q != '\0' && *q != '=') {
if (*p != *q)
return 0;
p++;
q++;
}
/* '=' near eos means ',' or '=' is ok */
if (*q == '=') {
if (*p == 0)
*ptr = p;
if (*p != ',' && *p != '=')
return 0;
p++;
} else if (*p) {
return 0;
}
*ptr = p;
return ret;
}
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 void copy_linker_arg(char **pp, const char *s, int sep)
{
const char *q = s;
char *p = *pp;
int l = 0;
if (p && sep)
p[l = strlen(p)] = sep, ++l;
skip_linker_arg(&q);
pstrncpy(l + (*pp = tcc_realloc(p, q - s + l + 1)), s, q - s);
}
/* set linker options */
static int tcc_set_linker(TCCState *s, const char *option)
{
TCCState *s1 = s;
while (*option) {
const char *p = NULL;
char *end = NULL;
int ignoring = 0;
int ret;
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)) {
copy_linker_arg(&s->fini_symbol, p, 0);
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)) {
copy_linker_arg(&s->init_symbol, p, 0);
ignoring = 1;
} else if (link_option(option, "oformat=", &p)) {
#if defined(TCC_TARGET_PE)
if (strstart("pe-", &p)) {
#elif PTR_SIZE == 8
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, "export-all-symbols", &p)) {
s->rdynamic = 1;
} else if (link_option(option, "export-dynamic", &p)) {
s->rdynamic = 1;
} else if (link_option(option, "rpath=", &p)) {
copy_linker_arg(&s->rpath, p, ':');
} else if (link_option(option, "enable-new-dtags", &p)) {
s->enable_new_dtags = 1;
} else if (link_option(option, "section-alignment=", &p)) {
s->section_align = strtoul(p, &end, 16);
} else if (link_option(option, "soname=", &p)) {
copy_linker_arg(&s->soname, p, 0);
#ifdef TCC_TARGET_PE
} else if (link_option(option, "large-address-aware", &p)) {
s->pe_characteristics |= 0x20;
} 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") || !strcmp(p, "windows")) {
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 if (ret = link_option(option, "?whole-archive", &p), ret) {
if (ret > 0)
s->filetype |= AFF_WHOLE_ARCHIVE;
else
s->filetype &= ~AFF_WHOLE_ARCHIVE;
} else if (p) {
return 0;
} else {
err:
tcc_error("unsupported linker option '%s'", option);
}
if (ignoring && s->warn_unsupported)
tcc_warning("unsupported linker option '%s'", option);
option = skip_linker_arg(&p);
}
return 1;
}
typedef struct TCCOption {
const char *name;
uint16_t index;
uint16_t flags;
} TCCOption;
enum {
TCC_OPTION_HELP,
TCC_OPTION_HELP2,
TCC_OPTION_v,
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_ba,
TCC_OPTION_g,
TCC_OPTION_c,
TCC_OPTION_dumpversion,
TCC_OPTION_d,
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_Wp,
TCC_OPTION_W,
TCC_OPTION_O,
TCC_OPTION_mfloat_abi,
TCC_OPTION_m,
TCC_OPTION_f,
TCC_OPTION_isystem,
TCC_OPTION_iwithprefix,
TCC_OPTION_include,
TCC_OPTION_nostdinc,
TCC_OPTION_nostdlib,
TCC_OPTION_print_search_dirs,
TCC_OPTION_rdynamic,
TCC_OPTION_param,
TCC_OPTION_pedantic,
TCC_OPTION_pthread,
TCC_OPTION_run,
TCC_OPTION_w,
TCC_OPTION_pipe,
TCC_OPTION_E,
TCC_OPTION_MD,
TCC_OPTION_MF,
TCC_OPTION_x,
TCC_OPTION_ar,
TCC_OPTION_impdef
};
#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 },
{ "hh", TCC_OPTION_HELP2, 0 },
{ "v", TCC_OPTION_v, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
{ "-version", TCC_OPTION_v, 0 }, /* handle as verbose, also prints version*/
{ "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 },
{ "bench", TCC_OPTION_bench, 0 },
#ifdef CONFIG_TCC_BACKTRACE
{ "bt", TCC_OPTION_bt, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
#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 },
{ "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 },
{ "-param", TCC_OPTION_param, 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 },
{ "Wp,", TCC_OPTION_Wp, 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 },
#ifdef TCC_TARGET_ARM
{ "mfloat-abi", TCC_OPTION_mfloat_abi, TCC_OPTION_HAS_ARG },
#endif
{ "m", TCC_OPTION_m, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
{ "f", TCC_OPTION_f, TCC_OPTION_HAS_ARG | TCC_OPTION_NOSEP },
{ "isystem", TCC_OPTION_isystem, TCC_OPTION_HAS_ARG },
{ "include", TCC_OPTION_include, TCC_OPTION_HAS_ARG },
{ "nostdinc", TCC_OPTION_nostdinc, 0 },
{ "nostdlib", TCC_OPTION_nostdlib, 0 },
{ "print-search-dirs", TCC_OPTION_print_search_dirs, 0 },
{ "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 },
{ "ar", TCC_OPTION_ar, 0},
#ifdef TCC_TARGET_PE
{ "impdef", TCC_OPTION_impdef, 0},
#endif
{ NULL, 0, 0 },
};
static const FlagDef options_W[] = {
{ 0, 0, "all" },
{ offsetof(TCCState, warn_unsupported), 0, "unsupported" },
{ offsetof(TCCState, warn_write_strings), 0, "write-strings" },
{ offsetof(TCCState, warn_error), 0, "error" },
{ offsetof(TCCState, warn_gcc_compat), 0, "gcc-compat" },
{ offsetof(TCCState, warn_implicit_function_declaration), WD_ALL,
"implicit-function-declaration" },
{ 0, 0, NULL }
};
static const FlagDef options_f[] = {
{ 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, dollars_in_identifiers), 0, "dollars-in-identifiers" },
{ 0, 0, NULL }
};
static const FlagDef options_m[] = {
{ offsetof(TCCState, ms_bitfields), 0, "ms-bitfields" },
#ifdef TCC_TARGET_X86_64
{ offsetof(TCCState, nosse), FD_INVERT, "sse" },
#endif
{ 0, 0, NULL }
};
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)
{
struct filespec *f = tcc_malloc(sizeof *f + strlen(filename));
f->type = filetype;
strcpy(f->name, filename);
dynarray_add(&s->files, &s->nb_files, f);
}
static int args_parser_make_argv(const char *r, int *argc, char ***argv)
{
int ret = 0, q, c;
CString str;
for(;;) {
while (c = (unsigned char)*r, c && c <= ' ')
++r;
if (c == 0)
break;
q = 0;
cstr_new(&str);
while (c = (unsigned char)*r, c) {
++r;
if (c == '\\' && (*r == '"' || *r == '\\')) {
c = *r++;
} else if (c == '"') {
q = !q;
continue;
} else if (q == 0 && c <= ' ') {
break;
}
cstr_ccat(&str, c);
}
cstr_ccat(&str, 0);
//printf("<%s>\n", str.data), fflush(stdout);
dynarray_add(argv, argc, tcc_strdup(str.data));
cstr_free(&str);
++ret;
}
return ret;
}
/* read list file */
static void args_parser_listfile(TCCState *s,
const char *filename, int optind, int *pargc, char ***pargv)
{
TCCState *s1 = s;
int fd, i;
size_t len;
char *p;
int argc = 0;
char **argv = NULL;
fd = open(filename, O_RDONLY | O_BINARY);
if (fd < 0)
tcc_error("listfile '%s' not found", filename);
len = lseek(fd, 0, SEEK_END);
p = tcc_malloc(len + 1), p[len] = 0;
lseek(fd, 0, SEEK_SET), read(fd, p, len), close(fd);
for (i = 0; i < *pargc; ++i)
if (i == optind)
args_parser_make_argv(p, &argc, &argv);
else
dynarray_add(&argv, &argc, tcc_strdup((*pargv)[i]));
tcc_free(p);
dynarray_reset(&s->argv, &s->argc);
*pargc = s->argc = argc, *pargv = s->argv = argv;
}
PUB_FUNC int tcc_parse_args(TCCState *s, int *pargc, char ***pargv, int optind)
{
TCCState *s1 = s;
const TCCOption *popt;
const char *optarg, *r;
const char *run = NULL;
int x;
CString linker_arg; /* collect -Wl options */
int tool = 0, arg_start = 0, noaction = optind;
char **argv = *pargv;
int argc = *pargc;
cstr_new(&linker_arg);
while (optind < argc) {
r = argv[optind];
if (r[0] == '@' && r[1] != '\0') {
args_parser_listfile(s, r + 1, optind, &argc, &argv);
continue;
}
optind++;
if (tool) {
if (r[0] == '-' && r[1] == 'v' && r[2] == 0)
++s->verbose;
continue;
}
reparse:
if (r[0] != '-' || r[1] == '\0') {
if (r[0] != '@') /* allow "tcc file(s) -run @ args ..." */
args_parser_add_file(s, r, s->filetype);
if (run) {
tcc_set_options(s, run);
arg_start = optind - 1;
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)
arg_err:
tcc_error("argument to '%s' is missing", r);
optarg = argv[optind++];
}
} else if (*r1 != '\0')
continue;
break;
}
switch(popt->index) {
case TCC_OPTION_HELP:
x = OPT_HELP;
goto extra_action;
case TCC_OPTION_HELP2:
x = OPT_HELP2;
goto extra_action;
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, optarg, AFF_TYPE_LIB | (s->filetype & ~AFF_TYPE_MASK));
s->nb_libraries++;
break;
case TCC_OPTION_pthread:
s->option_pthread = 1;
break;
case TCC_OPTION_bench:
s->do_bench = 1;
break;
#ifdef CONFIG_TCC_BACKTRACE
case TCC_OPTION_bt:
s->rt_num_callers = atoi(optarg);
s->do_backtrace = 1;
s->do_debug = 1;
break;
#endif
#ifdef CONFIG_TCC_BCHECK
case TCC_OPTION_b:
s->do_bounds_check = 1;
s->do_backtrace = 1;
s->do_debug = 1;
break;
#endif
case TCC_OPTION_g:
s->do_debug = 1;
break;
case TCC_OPTION_c:
x = TCC_OUTPUT_OBJ;
set_output_type:
if (s->output_type)
tcc_warning("-%s: overriding compiler action already specified", popt->name);
s->output_type = x;
break;
case TCC_OPTION_d:
if (*optarg == 'D')
s->dflag = 3;
else if (*optarg == 'M')
s->dflag = 7;
else if (*optarg == 't')
s->dflag = 16;
else if (isnum(*optarg))
s->g_debug |= atoi(optarg);
else
goto unsupported_option;
break;
case TCC_OPTION_static:
s->static_link = 1;
break;
case TCC_OPTION_std:
if (strcmp(optarg, "=c11") == 0)
s->cversion = 201112;
break;
case TCC_OPTION_shared:
x = TCC_OUTPUT_DLL;
goto set_output_type;
case TCC_OPTION_soname:
s->soname = 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 */
s->option_r = 1;
x = TCC_OUTPUT_OBJ;
goto set_output_type;
case TCC_OPTION_isystem:
tcc_add_sysinclude_path(s, optarg);
break;
case TCC_OPTION_include:
cstr_printf(&s->cmdline_incl, "#include \"%s\"\n", optarg);
break;
case TCC_OPTION_nostdinc:
s->nostdinc = 1;
break;
case TCC_OPTION_nostdlib:
s->nostdlib = 1;
break;
case TCC_OPTION_run:
#ifndef TCC_IS_NATIVE
tcc_error("-run is not available in a cross compiler");
#endif
run = optarg;
x = TCC_OUTPUT_MEMORY;
goto set_output_type;
case TCC_OPTION_v:
do ++s->verbose; while (*optarg++ == 'v');
++noaction;
break;
case TCC_OPTION_f:
if (set_flag(s, options_f, optarg) < 0)
goto unsupported_option;
break;
#ifdef TCC_TARGET_ARM
case TCC_OPTION_mfloat_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_m:
if (set_flag(s, options_m, optarg) < 0) {
if (x = atoi(optarg), x != 32 && x != 64)
goto unsupported_option;
if (PTR_SIZE != x/8)
return x;
++noaction;
}
break;
case TCC_OPTION_W:
s->warn_none = 0;
if (optarg[0] && set_flag(s, options_W, optarg) < 0)
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, 0);
if (tcc_set_linker(s, linker_arg.data))
cstr_free(&linker_arg);
break;
case TCC_OPTION_Wp:
r = optarg;
goto reparse;
case TCC_OPTION_E:
x = TCC_OUTPUT_PREPROCESS;
goto set_output_type;
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);
break;
case TCC_OPTION_x:
x = 0;
if (*optarg == 'c')
x = AFF_TYPE_C;
else if (*optarg == 'a')
x = AFF_TYPE_ASMPP;
else if (*optarg == 'b')
x = AFF_TYPE_BIN;
else if (*optarg == 'n')
x = AFF_TYPE_NONE;
else
tcc_warning("unsupported language '%s'", optarg);
s->filetype = x | (s->filetype & ~AFF_TYPE_MASK);
break;
case TCC_OPTION_O:
s->optimize = atoi(optarg);
break;
case TCC_OPTION_print_search_dirs:
x = OPT_PRINT_DIRS;
goto extra_action;
case TCC_OPTION_impdef:
x = OPT_IMPDEF;
goto extra_action;
case TCC_OPTION_ar:
x = OPT_AR;
extra_action:
arg_start = optind - 1;
if (arg_start != noaction)
tcc_error("cannot parse %s here", r);
tool = x;
break;
case TCC_OPTION_traditional:
case TCC_OPTION_pedantic:
case TCC_OPTION_pipe:
case TCC_OPTION_s:
/* ignored */
break;
default:
unsupported_option:
if (s->warn_unsupported)
tcc_warning("unsupported option '%s'", r);
break;
}
}
if (linker_arg.size) {
r = linker_arg.data;
goto arg_err;
}
*pargc = argc - arg_start;
*pargv = argv + arg_start;
if (tool)
return tool;
if (optind != noaction)
return 0;
if (s->verbose == 2)
return OPT_PRINT_DIRS;
if (s->verbose)
return OPT_V;
return OPT_HELP;
}
LIBTCCAPI void tcc_set_options(TCCState *s, const char *r)
{
char **argv = NULL;
int argc = 0;
args_parser_make_argv(r, &argc, &argv);
tcc_parse_args(s, &argc, &argv, 0);
dynarray_reset(&argv, &argc);
}
PUB_FUNC void tcc_print_stats(TCCState *s1, unsigned total_time)
{
if (total_time < 1)
total_time = 1;
if (total_bytes < 1)
total_bytes = 1;
fprintf(stderr, "* %d idents, %d lines, %d bytes\n"
"* %0.3f s, %u lines/s, %0.1f MB/s\n",
total_idents, total_lines, total_bytes,
(double)total_time/1000,
(unsigned)total_lines*1000/total_time,
(double)total_bytes/1000/total_time);
#ifdef MEM_DEBUG
fprintf(stderr, "* %d bytes memory used\n", mem_max_size);
#endif
}
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