2f2708a769
The new gcc12 release does not support stabs any more. This was a good reason to add support for dwarf. The stabs code still works and is used if configure option --dwarf is not used. Tested on x86_64, i386, arm, arm64, riscv64 with dwarf-5. Some debuggers may not support dwarf-5. Try using older dwarf versions i that case. The tccmacho.c code probably need some support for dwarf. arm-gen.c, arm64-gen.c, i386-gen.c, riscv64-gen.c, x86_64-gen. - fix get_sym_ref symbol size arm-link.c, arm64-link.c, i386-link.c, riscv64-link.c, x86_64-link.c - add R_DATA_32U libtcc.c: - parse -gdwarf option tcc.c: - add dwarf option tcc.h: - add dwarf option and sections tccelf.c: - init dwarf sections - avoid adding sh_addr for dwarf sections - remove dwarf relocs for output dll - add dwarf sections for tccrun tccgen.c: - add dwarf defines + global data - add dwarf_* functions - mix dwarf code with stabs code - a trick is used to emit function name in .debug_line section so only this section has to be parsed instead of .debug_info and .debug_abbrev. - fix init debug_modes tccrun.c: - add dwarf sections in rt_context - init them in tcc_run - add new dwarf code rt_printline_dwarf to find file/function dwarf.h: - New file tcc-doc.texi: - document dwarf configure: - add dwarf option lib/Makefile - change -gstabs into -gdwarf lib/bt-exe.c, tests/tests2/Makefile, tests/tests2/126_bound_global: - Add __bound_init call - Add new testcase to test it
45 lines
1.3 KiB
C
45 lines
1.3 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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#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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/* copy a string and truncate it. */
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static 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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