1// RUN: %clangxx -O0 %s -o %t && %run %t
2
3#include <assert.h>
4#include <signal.h>
5#include <stdio.h>
6#include <sys/ptrace.h>
7#include <sys/types.h>
8#include <sys/user.h>
9#include <sys/wait.h>
10#include <unistd.h>
11#if __mips64
12 #include <asm/ptrace.h>
13 #include <sys/procfs.h>
14#endif
15
16int main(void) {
17  pid_t pid;
18  pid = fork();
19  if (pid == 0) { // child
20    ptrace(PTRACE_TRACEME, 0, NULL, NULL);
21    execl("/bin/true", "true", NULL);
22  } else {
23    wait(NULL);
24    int res;
25
26#if __x86_64__
27    user_regs_struct regs;
28    res = ptrace(PTRACE_GETREGS, pid, NULL, &regs);
29    assert(!res);
30    if (regs.rip)
31      printf("%zx\n", regs.rip);
32
33    user_fpregs_struct fpregs;
34    res = ptrace(PTRACE_GETFPREGS, pid, NULL, &fpregs);
35    assert(!res);
36    if (fpregs.mxcsr)
37      printf("%x\n", fpregs.mxcsr);
38#endif // __x86_64__
39
40#if (__powerpc64__ || __mips64)
41    struct pt_regs regs;
42    res = ptrace((enum __ptrace_request)PTRACE_GETREGS, pid, NULL, &regs);
43    assert(!res);
44#if (__powerpc64__)
45    if (regs.nip)
46      printf("%lx\n", regs.nip);
47#else
48    if (regs.cp0_epc)
49    printf("%lx\n", regs.cp0_epc);
50#endif
51    elf_fpregset_t fpregs;
52    res = ptrace((enum __ptrace_request)PTRACE_GETFPREGS, pid, NULL, &fpregs);
53    assert(!res);
54    if ((elf_greg_t)fpregs[32]) // fpscr
55      printf("%lx\n", (elf_greg_t)fpregs[32]);
56#endif // (__powerpc64__ || __mips64)
57
58    siginfo_t siginfo;
59    res = ptrace(PTRACE_GETSIGINFO, pid, NULL, &siginfo);
60    assert(!res);
61    assert(siginfo.si_pid == pid);
62
63    ptrace(PTRACE_CONT, pid, NULL, NULL);
64
65    wait(NULL);
66  }
67  return 0;
68}
69