8d8d75ca75
tcc failed to run with bounds checking enabled because the functions rt_wait_sem, rt_post_sem and _rt_error where defined twice. This is solved by making them weak in tccrun.c Also a nested lock was present when setting TCC_BOUNDS_PRINT_CALLS=1 This is solved in lib/bt-exe.c by moving lock/unlock code. Also added a testcase in tests/Makefile to test tcc with bounds checking enabled.
69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/* ------------------------------------------------------------- */
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/* for linking rt_printline and the signal/exception handler
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from tccrun.c into executables. */
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#define CONFIG_TCC_BACKTRACE_ONLY
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#define ONE_SOURCE 1
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#define pstrcpy tcc_pstrcpy
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#define TCC_SEM_IMPL 1
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#include "../tccrun.c"
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#ifndef _WIN32
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# define __declspec(n)
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#endif
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__declspec(dllexport)
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void __bt_init(rt_context *p, int is_exe)
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{
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__attribute__((weak)) int main();
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__attribute__((weak)) void __bound_init(void*, int);
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//fprintf(stderr, "__bt_init %d %p %p %p\n", is_exe, p, p->stab_sym, p->bounds_start), fflush(stderr);
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/* call __bound_init here due to redirection of sigaction */
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/* needed to add global symbols */
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if (p->bounds_start)
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__bound_init(p->bounds_start, -1);
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/* add to chain */
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WAIT_SEM(&rt_sem);
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p->next = g_rc, g_rc = p;
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if (is_exe)
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/* we are the executable (not a dll) */
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p->top_func = main;
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POST_SEM(&rt_sem);
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if (is_exe)
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set_exception_handler();
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}
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__declspec(dllexport)
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void __bt_exit(rt_context *p)
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{
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struct rt_context *rc, **pp;
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__attribute__((weak)) void __bound_exit_dll(void*);
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//fprintf(stderr, "__bt_exit %d %p\n", !!p->top_func, p);
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if (p->bounds_start)
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__bound_exit_dll(p->bounds_start);
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/* remove from chain */
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WAIT_SEM(&rt_sem);
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for (pp = &g_rc; rc = *pp, rc; pp = &rc->next)
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if (rc == p) {
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*pp = rc->next;
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break;
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}
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POST_SEM(&rt_sem);
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}
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/* copy a string and truncate it. */
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ST_FUNC char *pstrcpy(char *buf, size_t buf_size, const char *s)
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{
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int l = strlen(s);
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if (l >= buf_size)
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l = buf_size - 1;
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memcpy(buf, s, l);
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buf[l] = 0;
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return buf;
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}
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