1 /* Tests that Valgrind coredump support works correctly by producing
2 a core dump analyzable by mdb. */
3
4 #include <stdio.h>
5 #include <sys/types.h>
6
7 __attribute__((noinline))
inner(void)8 static void inner(void)
9 {
10 /* Set registers to apriori known values. */
11 __asm__ __volatile__(
12 "movq $0x101, %%rax\n"
13 "movq $0x102, %%rbx\n"
14 "movq $0x103, %%rcx\n"
15 "movq $0x104, %%rdx\n"
16 "movq $0x105, %%rsi\n"
17 "movq $0x106, %%rdi\n"
18 "movq $0x107, %%r8\n"
19 "movq $0x108, %%r9\n"
20 "movq $0x109, %%r10\n"
21 "movq $0x10a, %%r11\n"
22 "movq $0x10b, %%r12\n"
23 "movq $0x10c, %%r13\n"
24 "movq $0x10d, %%r14\n"
25 "movq $0x10e, %%r15\n"
26 // not %rbp as mdb is then not able to reconstruct stack trace
27 "movq $0x10f, %%rsp\n"
28 "movq $0x1234, (%%rax)\n" // should cause SEGV here
29 "ud2" // should never get here
30 : // no output registers
31 : // no input registers
32 : "memory", "%rax", "%rbx", "%rcx", "%rdx", "%rsi", "%rdi",
33 "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15", "%rsp");
34 }
35
36 __attribute__((noinline))
outer(void)37 static void outer(void)
38 {
39 inner();
40 }
41
main(int argc,const char * argv[])42 int main(int argc, const char *argv[])
43 {
44 outer();
45 return 0;
46 }
47