tinycc/lib/bt-exe.c
grischka 2caaff20fb tccdbg.c: new file
Better avoid global variables, at least in new code.

tccdbg.c hopefully should be logically identical to the
former parts in tccgen/elf.c (s1 tccstate added in some
places)

tccelf.c: dwarf linkage seems special per dwarf rather
than special per target.
2022-05-09 22:37:25 +02:00

48 lines
1.3 KiB
C

/* ------------------------------------------------------------- */
/* for linking rt_printline and the signal/exception handler
from tccrun.c into executables. */
#define CONFIG_TCC_BACKTRACE_ONLY
#define ONE_SOURCE 0
#include "../tccrun.c"
int (*__rt_error)(void*, void*, const char *, va_list);
#ifndef _WIN32
# define __declspec(n)
#endif
__declspec(dllexport)
void __bt_init(rt_context *p, int num_callers)
{
__attribute__((weak)) int main();
__attribute__((weak)) void __bound_init(void*, int);
struct rt_context *rc = &g_rtctxt;
//fprintf(stderr, "__bt_init %d %p %p\n", num_callers, p->stab_sym, p->bounds_start), fflush(stderr);
/* call __bound_init here due to redirection of sigaction */
/* needed to add global symbols */
if (__bound_init && p->bounds_start)
__bound_init(p->bounds_start, -1);
if (num_callers) {
memcpy(rc, p, offsetof(rt_context, next));
rc->num_callers = num_callers - 1;
rc->top_func = main;
__rt_error = _rt_error;
set_exception_handler();
} else {
p->num_callers = -1;
p->next = rc->next, rc->next = p;
}
}
/* copy a string and truncate it. */
ST_FUNC char *pstrcpy(char *buf, size_t buf_size, const char *s)
{
int l = strlen(s);
if (l >= buf_size)
l = buf_size - 1;
memcpy(buf, s, l);
buf[l] = 0;
return buf;
}