diff options
Diffstat (limited to 'tools/testing/selftests/powerpc/ptrace/ptrace-gpr.c')
| -rw-r--r-- | tools/testing/selftests/powerpc/ptrace/ptrace-gpr.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/tools/testing/selftests/powerpc/ptrace/ptrace-gpr.c b/tools/testing/selftests/powerpc/ptrace/ptrace-gpr.c index c5dcb8c02616..9ed87d297799 100644 --- a/tools/testing/selftests/powerpc/ptrace/ptrace-gpr.c +++ b/tools/testing/selftests/powerpc/ptrace/ptrace-gpr.c @@ -46,22 +46,42 @@ static int child(void) int trace_gpr(pid_t child) { + __u64 tmp, fpr[32], *peeked_fprs; unsigned long gpr[18]; - __u64 tmp, fpr[32]; FAIL_IF(start_trace(child)); + + // Check child GPRs match what we expect using GETREGS FAIL_IF(show_gpr(child, gpr)); FAIL_IF(validate_gpr(gpr, child_gpr_val)); - FAIL_IF(show_fpr(child, fpr)); + // Check child FPRs match what we expect using GETFPREGS + FAIL_IF(show_fpr(child, fpr)); memcpy(&tmp, &child_fpr_val, sizeof(tmp)); FAIL_IF(validate_fpr(fpr, tmp)); + // Check child FPRs match what we expect using PEEKUSR + peeked_fprs = peek_fprs(child); + FAIL_IF(!peeked_fprs); + FAIL_IF(validate_fpr(peeked_fprs, tmp)); + free(peeked_fprs); + + // Write child GPRs using SETREGS FAIL_IF(write_gpr(child, parent_gpr_val)); + // Write child FPRs using SETFPREGS memcpy(&tmp, &parent_fpr_val, sizeof(tmp)); FAIL_IF(write_fpr(child, tmp)); + // Check child FPRs match what we just set, using PEEKUSR + peeked_fprs = peek_fprs(child); + FAIL_IF(!peeked_fprs); + FAIL_IF(validate_fpr(peeked_fprs, tmp)); + + // Write child FPRs using POKEUSR + FAIL_IF(poke_fprs(child, (unsigned long *)peeked_fprs)); + + // Child will check its FPRs match before exiting FAIL_IF(stop_trace(child)); return TEST_PASS; |