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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2024-04-29 20:22:39 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2024-04-29 20:22:39 +0200 |
| commit | b84bc948528e6474ba48596144e9c17466a98448 (patch) | |
| tree | 194e9a20ae9ec40614937de8a23753908bffc75e /tools/testing/selftests/syscall_user_dispatch/sud_test.c | |
| parent | Merge tag 'mediatek-drm-next-6.10' of https://git.kernel.org/pub/scm/linux/ke... (diff) | |
| parent | Linux 6.9-rc6 (diff) | |
| download | linux-b84bc948528e6474ba48596144e9c17466a98448.tar.gz linux-b84bc948528e6474ba48596144e9c17466a98448.zip | |
Merge v6.9-rc6 into drm-next
Thomas needs the defio fixes, Maíra needs the vkms fixes and Joonas
has some fun with i915-gem conflicts.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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) |