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enable backtrace only when it's supported

This commit is contained in:
grischka 2009-04-18 18:21:38 +02:00
parent 859da934e0
commit e9e89ad699
1 changed files with 15 additions and 8 deletions
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23
tcc.c
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@ -112,6 +112,10 @@
#define TCC_TARGET_COFF
#endif
#if !defined(_WIN32) && !defined(CONFIG_TCCBOOT)
#define CONFIG_TCC_BACKTRACE
#endif
#define FALSE 0
#define false 0
#define TRUE 1
@ -431,8 +435,10 @@ static int gnu_ext = 1;
static int tcc_ext = 1;
/* max number of callers shown if error */
#ifdef CONFIG_TCC_BACKTRACE
static int num_callers = 6;
static const char **rt_bound_error_msg;
#endif
/* XXX: get rid of this ASAP */
static struct TCCState *tcc_state;
@ -10043,6 +10049,7 @@ static void asm_global_instr(void)
#include "tccpe.c"
#endif
#ifdef CONFIG_TCC_BACKTRACE
/* print the position in the source file of PC value 'pc' by reading
the stabs debug information */
static void rt_printline(unsigned long wanted_pc)
@ -10165,10 +10172,7 @@ static void rt_printline(unsigned long wanted_pc)
fprintf(stderr, "\n");
}
#if !defined(_WIN32) && !defined(CONFIG_TCCBOOT)
#ifdef __i386__
/* fix for glibc 2.1 */
#ifndef REG_EIP
#define REG_EIP EIP
@ -10234,9 +10238,7 @@ static int rt_get_caller_pc(unsigned long *paddr,
}
}
#else
#warning add arch specific rt_get_caller_pc()
static int rt_get_caller_pc(unsigned long *paddr,
ucontext_t *uc, int level)
{
@ -10304,6 +10306,7 @@ static void sig_error(int signum, siginfo_t *siginf, void *puc)
}
exit(255);
}
#endif
/* copy code into memory passed in by the caller and do all relocations
@ -10401,9 +10404,7 @@ int tcc_run(TCCState *s1, int argc, char **argv)
prog_main = tcc_get_symbol_err(s1, "main");
if (do_debug) {
#if defined(_WIN32) || defined(CONFIG_TCCBOOT)
error("debug mode currently not available for Windows");
#else
#ifdef CONFIG_TCC_BACKTRACE
struct sigaction sigact;
/* install TCC signal handlers to print debug info on fatal
runtime errors */
@ -10415,6 +10416,8 @@ int tcc_run(TCCState *s1, int argc, char **argv)
sigaction(SIGSEGV, &sigact, NULL);
sigaction(SIGBUS, &sigact, NULL);
sigaction(SIGABRT, &sigact, NULL);
#else
error("debug mode not available");
#endif
}
@ -11023,7 +11026,9 @@ void help(void)
#ifdef CONFIG_TCC_BCHECK
" -b compile with built-in memory and bounds checker (implies -g)\n"
#endif
#ifdef CONFIG_TCC_BACKTRACE
" -bt N show N callers in stack traces\n"
#endif
);
}
@ -11232,9 +11237,11 @@ int parse_args(TCCState *s, int argc, char **argv)
case TCC_OPTION_bench:
do_bench = 1;
break;
#ifdef CONFIG_TCC_BACKTRACE
case TCC_OPTION_bt:
num_callers = atoi(optarg);
break;
#endif
#ifdef CONFIG_TCC_BCHECK
case TCC_OPTION_b:
do_bounds_check = 1;