mirror of
https://github.com/frida/tinycc
synced 2024-12-20 12:12:34 +03:00
045632defb
i386-gen.c:
- load/gen_opf: set v1.sym to NULL
lib/Makefile:
- Add -gstabs -fno-omit-frame-pointer -Wno-unused-function -Wno-unused-variable
lib/bt-log.c:
- tcc_backtrace: Prevent __builtin_frame_address warning
tccgen.c:
- struct_layout: Set t.t to VT_BYTE
- default_debug: Use octal instead of -1 to make size_t work
tccpp.c:
- tal_realloc_impl: Only memcpy when p set
x86_64-gen.c:
- gen_bounds_epilog: Do not save/restore rcx (not caller/callee saved)
This also made stack not aligned to 16 bytes.
51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
/* ------------------------------------------------------------- */
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/* function to get a stack backtrace on demand with a message */
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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int (*__rt_error)(void*, void*, const char *, va_list);
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#ifdef _WIN32
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# define DLL_EXPORT __declspec(dllexport)
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#else
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# define DLL_EXPORT
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#endif
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#if defined(__GNUC__) && (__GNUC__ >= 6)
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/*
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* At least gcc 6.2 complains when __builtin_frame_address is used with
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* nonzero argument.
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*/
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wframe-address"
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#endif
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DLL_EXPORT int tcc_backtrace(const char *fmt, ...)
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{
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va_list ap;
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int ret;
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if (__rt_error) {
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void *fp = __builtin_frame_address(1);
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void *ip = __builtin_return_address(0);
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va_start(ap, fmt);
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ret = __rt_error(fp, ip, fmt, ap);
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va_end(ap);
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} else {
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const char *p;
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if (fmt[0] == '^' && (p = strchr(fmt + 1, fmt[0])))
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fmt = p + 1;
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va_start(ap, fmt);
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ret = vfprintf(stderr, fmt, ap);
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va_end(ap);
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fprintf(stderr, "\n"), fflush(stderr);
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}
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return ret;
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}
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#if defined(__GNUC__) && (__GNUC__ >= 6)
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#pragma GCC diagnostic pop
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#endif
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