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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2024-05-02 11:25:27 +0200 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2024-05-02 11:25:27 +0200 |
| commit | b0a835db17434473dfb84f7646de1cedc4ecdb94 (patch) | |
| tree | 5ca9891b58895b99555ec7717129eb22cb3c0a19 /tools/testing/selftests/syscall_user_dispatch/sud_test.c | |
| parent | e91a36b472862a1d199ea8d1b1ca192a347bf33e (diff) | |
| parent | 4a56c0ed5aa0bcbe1f5f7d755fb1fe1ebf48ae9c (diff) | |
Merge drm/drm-next into drm-misc-next
Backmerging to get DRM fixes from v6.9-rc6.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Diffstat (limited to 'tools/testing/selftests/syscall_user_dispatch/sud_test.c')
| -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 b5d592d4099e..d975a6767329 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) |