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 16 int 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, ®s); 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, ®s); 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
