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https://github.com/mirror/tinycc.git
synced 2024-12-26 03:50:07 +08:00
aaec564a82
The main problem is that an application called dlclose and then had a bound checking problem. The list of dll's in tccrun was not updated an caused a crash. Also fixed some minor other things. tccdbg.c: - Allow filenames like ../file.c - Rewrite DWARF_ABBREV_MEMBER_BF/DWARF_ABBREV_MEMBER a bit tccelf.c: - Add call to __bt_exit. This solves problem when dlclose is called tccrun.c: - Rewrite rt_printline_dwarf a litlle to use opcode_length correctly - Do not stop at DW_LNE_end_sequence - Fix DW_LNE_set_address again. Works now in *bsd. lib/bt-exe.c lib/bt-dll.c: - Add __bt_exit/__bound_exit_dll lib/bcheck.c: - Add __bound_exit_dll
64 lines
1.7 KiB
C
64 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 0
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#include "../tccrun.c"
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int (*__rt_error)(void*, void*, const char *, va_list);
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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 num_callers)
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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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struct rt_context *rc = &g_rtctxt;
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//fprintf(stderr, "__bt_init %d %p %p\n", num_callers, 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 (__bound_init && p->bounds_start)
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__bound_init(p->bounds_start, -1);
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if (num_callers) {
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memcpy(rc, p, offsetof(rt_context, next));
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rc->num_callers = num_callers - 1;
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rc->top_func = main;
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__rt_error = _rt_error;
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set_exception_handler();
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} else {
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p->next = rc->next, rc->next = p;
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}
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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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__attribute__((weak)) void __bound_exit_dll(void*);
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struct rt_context *rc = &g_rtctxt;
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if (__bound_exit_dll && p->bounds_start)
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__bound_exit_dll(p->bounds_start);
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while (rc) {
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if (rc->next == p) {
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rc->next = rc->next->next;
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break;
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}
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rc = rc->next;
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}
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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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