I had to write this code to be able to get the stack trace under TinyC:
#ifdef __TINYC__int backtrace(void **buffer, int size) {
extern uint64_t *__libc_stack_end;
uint64_t **p, *bp, *frame;
asm ("mov %%rbp, %0;" : "=r" (bp));
p = (uint64_t**) bp;
int i = 0;
while (i < size) {
frame = p[0];
if (frame < bp || frame > __libc_stack_end) {
return i;
}
buffer[i++] = p[1];
p = (uint64_t**) frame;
}
return i;}#endif
2018-03-09 15:24 GMT+05:45 Yakov <[email protected]>:
>
>
> *#include* <execinfo.h>
> *#include* <stdio.h>
>
> *void* show_bt*() {*
> *int* n;
> *void* *buffer*[**111];*
> *char* **strings*;*
> n *=* backtrace*(*buffer*,* *111);*
> strings *=* backtrace_symbols*(*buffer*,* n*);*
> *while* *(*strings *&&* n*)* printf("%s\n"*,* strings*[*n*---*1*]);*
> *}*
>
> *void* c*()* *{* show_bt*(); }*
> *void* b*()* *{* c*(); }*
> *void* a*()* *{* b*(); }*
> *int* main*()* *{* a*(); }*
>
>
>
> The above code does not work on Tiny. Although works on GCC/Clang for me.
>
>
>
> *$ tcc -versiontcc version 0.9.26 (x86-64 Linux)*
>
>
> I have tried to no avail:* "-bt 100", "-g", "-rdynamic"*, also tried to
> link with gcc and ld.
>
>
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