1.代码
#include <stdio.h>
#include <execinfo.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#define BT_BUF_SIZE 100
void my_backtrace(void)
{
int j, nptrs;
void *buffer[BT_BUF_SIZE];
char **strings;
nptrs = backtrace(buffer, BT_BUF_SIZE);
printf("backtrace() returned %d addresses\n", nptrs);
/* The call backtrace_symbols_fd(buffer, nptrs, STDOUT_FILENO)
would produce similar output to the following: */
strings = backtrace_symbols(buffer, nptrs);
if (strings == NULL) {
perror("backtrace_symbols");
exit(EXIT_FAILURE);
}
for (j = 0; j < nptrs; j++)
printf("%s\n", strings[j]);
free(strings);
}
unsigned long GetCurrentFp(void)
{
asm("ldr x0, [sp]");
}
void func()
{
int a=16;
my_backtrace();
printf("%s<%d> Fp=0x%lx \n",__FUNCTION__,__LINE__,GetCurrentFp());
printf("%s<%d> Fp-16=0x%lx \n",__FUNCTION__,__LINE__,(GetCurrentFp()+16));
}
void asmFunction()
{
int a = 10;
int b = 12;
func();
}
int main()
{
asmFunction();
}
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void my_backtrace(void)
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{
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int j, nptrs;
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void *buffer[BT_BUF_SIZE];
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char **strings;
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nptrs = backtrace(buffer, BT_BUF_SIZE);
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printf("backtrace() returned %d addresses\n", nptrs);
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/* The call backtrace_symbols_fd(buffer, nptrs, STDOUT_FILENO)
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would produce similar output to the following: */
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strings = backtrace_symbols(buffer, nptrs);
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if (strings == NULL) {
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perror("backtrace_symbols");
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exit(EXIT_FAILURE);
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}
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for (j = 0; j < nptrs; j++)
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printf("%s\n", strings[j]);
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free(strings);
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}
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unsigned long GetCurrentFp(void)
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{
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asm("ldr x0, [sp]");
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}
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void func()
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{
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int a=16;
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my_backtrace();
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printf("%s<%d> Fp=0x%lx \n",__FUNCTION__,__LINE__,GetCurrentFp());
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printf("%s<%d> Fp-16=0x%lx \n",__FUNCTION__,__LINE__,(GetCurrentFp()+16));
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}
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void asmFunction()
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{
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int a = 10;
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int b = 12;
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func();
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}
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int main()
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{
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asmFunction();
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}
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2.编译
aarch64-linux-gnu-gcc test.c -funwind-tables -g -rdynamic1
1
aarch64-linux-gnu-gcc test.c -funwind-tables -g -rdynamic
3.执行
./a.out
backtrace() returned 5 addresses
./a.out(my_backtrace+0x2c) [0xaaaabb19ed50]
./a.out(func+0x14) [0xaaaabb19ee28]
./a.out(asmFunction+0x1c) [0xaaaabb19ee98]
./a.out(main+0xc) [0xaaaabb19eeb0]
/lib64/libc.so.6(__libc_start_main+0xe8) [0xffff913c927c]
func<44> Fp=0xfffff5deb4e0
func<45> Fp-16=0xfffff5deb4f0 1
./a.out
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backtrace() returned 5 addresses
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./a.out(my_backtrace+0x2c) [0xaaaabb19ed50]
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./a.out(func+0x14) [0xaaaabb19ee28]
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./a.out(asmFunction+0x1c) [0xaaaabb19ee98]
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./a.out(main+0xc) [0xaaaabb19eeb0]
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/lib64/libc.so.6(__libc_start_main+0xe8) [0xffff913c927c]
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func<44> Fp=0xfffff5deb4e0
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func<45> Fp-16=0xfffff5deb4f0