| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | /* |
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| 3 | * Test sigreturn to an unaligned address, ie. low 2 bits set. |
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| 4 | * Nothing bad should happen. |
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| 5 | * This was able to trigger warnings with CONFIG_PPC_RFI_SRR_DEBUG=y. |
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| 6 | */ |
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| 7 | |
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| 8 | #include <signal.h> |
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| 9 | #include <stdio.h> |
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| 10 | #include <stdlib.h> |
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| 11 | #include <string.h> |
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| 12 | #include <ucontext.h> |
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| 13 | #include <unistd.h> |
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| 14 | |
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| 15 | #include "utils.h" |
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| 16 | |
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| 17 | |
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| 18 | static void sigusr1_handler(int signo, siginfo_t *info, void *ptr) |
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| 19 | { |
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| 20 | ucontext_t *uc = ptr; |
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| 21 | |
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| 22 | UCONTEXT_NIA(uc) |= 3; |
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| 23 | } |
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| 24 | |
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| 25 | static int test_sigreturn_unaligned(void) |
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| 26 | { |
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| 27 | struct sigaction action; |
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| 28 | |
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| 29 | memset(&action, 0, sizeof(action)); |
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| 30 | action.sa_sigaction = sigusr1_handler; |
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| 31 | action.sa_flags = SA_SIGINFO; |
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| 32 | |
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| 33 | FAIL_IF(sigaction(SIGUSR1, &action, NULL) == -1); |
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| 34 | |
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| 35 | raise(SIGUSR1); |
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| 36 | |
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| 37 | return 0; |
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| 38 | } |
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| 39 | |
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| 40 | int main(void) |
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| 41 | { |
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| 42 | return test_harness(test_sigreturn_unaligned, "sigreturn_unaligned" ); |
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| 43 | } |
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| 44 | |
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