| // RUN: %clangxx -O0 %s -o %t && %run %t |
| |
| #include <assert.h> |
| #include <signal.h> |
| #include <stdio.h> |
| #include <sys/ptrace.h> |
| #include <sys/types.h> |
| #include <sys/user.h> |
| #include <sys/wait.h> |
| #include <unistd.h> |
| #if __mips64 |
| #include <asm/ptrace.h> |
| #include <sys/procfs.h> |
| #endif |
| |
| int main(void) { |
| pid_t pid; |
| pid = fork(); |
| if (pid == 0) { // child |
| ptrace(PTRACE_TRACEME, 0, NULL, NULL); |
| execl("/bin/true", "true", NULL); |
| } else { |
| wait(NULL); |
| int res; |
| |
| #if __x86_64__ |
| user_regs_struct regs; |
| res = ptrace(PTRACE_GETREGS, pid, NULL, ®s); |
| assert(!res); |
| if (regs.rip) |
| printf("%zx\n", regs.rip); |
| |
| user_fpregs_struct fpregs; |
| res = ptrace(PTRACE_GETFPREGS, pid, NULL, &fpregs); |
| assert(!res); |
| if (fpregs.mxcsr) |
| printf("%x\n", fpregs.mxcsr); |
| #endif // __x86_64__ |
| |
| #if (__powerpc64__ || __mips64) |
| struct pt_regs regs; |
| res = ptrace((enum __ptrace_request)PTRACE_GETREGS, pid, NULL, ®s); |
| assert(!res); |
| #if (__powerpc64__) |
| if (regs.nip) |
| printf("%lx\n", regs.nip); |
| #else |
| if (regs.cp0_epc) |
| printf("%lx\n", regs.cp0_epc); |
| #endif |
| elf_fpregset_t fpregs; |
| res = ptrace((enum __ptrace_request)PTRACE_GETFPREGS, pid, NULL, &fpregs); |
| assert(!res); |
| if ((elf_greg_t)fpregs[32]) // fpscr |
| printf("%lx\n", (elf_greg_t)fpregs[32]); |
| #endif // (__powerpc64__ || __mips64) |
| |
| siginfo_t siginfo; |
| res = ptrace(PTRACE_GETSIGINFO, pid, NULL, &siginfo); |
| assert(!res); |
| assert(siginfo.si_pid == pid); |
| |
| ptrace(PTRACE_CONT, pid, NULL, NULL); |
| |
| wait(NULL); |
| } |
| return 0; |
| } |