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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-03 05:08:49 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-03 05:08:49 +0000 |
| commit | 76047c0312414915035f4ebbaa533fe3817a21e0 (patch) | |
| tree | 86f79ba3c1f753b1d39be793455035794fade031 /tools/testing/selftests/syscall_user_dispatch | |
| parent | Adding upstream version 6.8.11. (diff) | |
| download | linux-76047c0312414915035f4ebbaa533fe3817a21e0.tar.xz linux-76047c0312414915035f4ebbaa533fe3817a21e0.zip | |
Adding upstream version 6.8.12.upstream/6.8.12
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/syscall_user_dispatch')
| -rw-r--r-- | tools/testing/selftests/syscall_user_dispatch/sud_test.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/tools/testing/selftests/syscall_user_dispatch/sud_test.c b/tools/testing/selftests/syscall_user_dispatch/sud_test.c index b5d592d409..d975a67673 100644 --- a/tools/testing/selftests/syscall_user_dispatch/sud_test.c +++ b/tools/testing/selftests/syscall_user_dispatch/sud_test.c @@ -158,6 +158,20 @@ static void handle_sigsys(int sig, siginfo_t *info, void *ucontext) /* In preparation for sigreturn. */ SYSCALL_DISPATCH_OFF(glob_sel); + + /* + * The tests for argument handling assume that `syscall(x) == x`. This + * is a NOP on x86 because the syscall number is passed in %rax, which + * happens to also be the function ABI return register. Other + * architectures may need to swizzle the arguments around. + */ +#if defined(__riscv) +/* REG_A7 is not defined in libc headers */ +# define REG_A7 (REG_A0 + 7) + + ((ucontext_t *)ucontext)->uc_mcontext.__gregs[REG_A0] = + ((ucontext_t *)ucontext)->uc_mcontext.__gregs[REG_A7]; +#endif } TEST(dispatch_and_return) |