37 lines
781 B
C++
37 lines
781 B
C++
// RUN: %clangxx_msan -m64 -O0 %s -o %t && %t
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#include <assert.h>
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#include <stdio.h>
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#include <sys/ptrace.h>
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#include <sys/types.h>
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#include <sys/user.h>
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#include <sys/wait.h>
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#include <unistd.h>
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int main(void) {
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pid_t pid;
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pid = fork();
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if (pid == 0) { // child
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ptrace(PTRACE_TRACEME, 0, NULL, NULL);
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execl("/bin/true", "true", NULL);
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} else {
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wait(NULL);
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user_regs_struct regs;
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int res;
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res = ptrace(PTRACE_GETREGS, pid, NULL, ®s);
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assert(!res);
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if (regs.rip)
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printf("%zx\n", regs.rip);
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user_fpregs_struct fpregs;
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res = ptrace(PTRACE_GETFPREGS, pid, NULL, &fpregs);
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assert(!res);
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if (fpregs.mxcsr)
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printf("%x\n", fpregs.mxcsr);
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ptrace(PTRACE_CONT, pid, NULL, NULL);
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wait(NULL);
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}
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return 0;
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}
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