[compiler-rt] r221337 - Get the Linux ptrace test working on PowerPC64

[Jay Foad]

Author: foad
Date: Wed Nov  5 02:42:48 2014
New Revision: 221337

URL: http://llvm.org/viewvc/llvm-project?rev=221337&view=rev
Log:
Get the Linux ptrace test working on PowerPC64

The test refers to user_regs_struct.rip so it can only ever have worked
on x86-64. Put this code inside an appropriate #if, and add a similar
case for PowerPC64. (If we do likewise for ARM we can probably remove
the XFAILs, but I have no way of testing that.)

Those changes are enough to get the test working for me on big-endian
PowerPC64 Fedora 19.

Differential Revision: http://reviews.llvm.org/D6108

Modified:
    compiler-rt/trunk/test/sanitizer_common/TestCases/Linux/ptrace.cc

Modified: compiler-rt/trunk/test/sanitizer_common/TestCases/Linux/ptrace.cc
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/sanitizer_common/TestCases/Linux/ptrace.cc?rev=221337&r1=221336&r2=221337&view=diff
==============================================================================
--- compiler-rt/trunk/test/sanitizer_common/TestCases/Linux/ptrace.cc (original)
+++ compiler-rt/trunk/test/sanitizer_common/TestCases/Linux/ptrace.cc Wed Nov  5 02:42:48 2014
@@ -19,8 +19,10 @@ int main(void) {
     execl("/bin/true", "true", NULL);
   } else {
     wait(NULL);
-    user_regs_struct regs;
     int res;
+
+#if __x86_64__
+    user_regs_struct regs;
     res = ptrace(PTRACE_GETREGS, pid, NULL, &regs);
     assert(!res);
     if (regs.rip)
@@ -31,6 +33,21 @@ int main(void) {
     assert(!res);
     if (fpregs.mxcsr)
       printf("%x\n", fpregs.mxcsr);
+#endif // __x86_64__
+
+#if __powerpc64__
+    struct pt_regs regs;
+    res = ptrace((enum __ptrace_request)PTRACE_GETREGS, pid, NULL, &regs);
+    assert(!res);
+    if (regs.nip)
+      printf("%lx\n", regs.nip);
+
+    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__
 
     siginfo_t siginfo;
     res = ptrace(PTRACE_GETSIGINFO, pid, NULL, &siginfo);