diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2021-11-15 14:08:52 +0100 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2021-12-19 20:47:33 -0800 |
| commit | a3310c0397e21df8f47cde3e55736104b9584d2d (patch) | |
| tree | 2e550417028aea39886ba22f4b60fb9c88404630 /linux-user/meson.build | |
| parent | b9d2af3c62c22870c02410d5c9c6d097ee0ddf3f (diff) | |
linux-user: Move syscall error detection into safe_syscall_base
The current api from safe_syscall_base() is to return -errno, which is
the interface provided by *some* linux kernel abis. The wrapper macro,
safe_syscall(), detects error, stores into errno, and returns -1, to
match the api of the system syscall().
For those kernel abis that do not return -errno natively, this leads
to double syscall error detection. E.g. Linux ppc64, which sets the
SO flag for error.
Simplify the usage from C by moving the error detection into assembly,
and usage from assembly by providing a C helper with which to set errno.
Reviewed-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'linux-user/meson.build')
| -rw-r--r-- | linux-user/meson.build | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/linux-user/meson.build b/linux-user/meson.build index bf62c13e37..94ac3c58ce 100644 --- a/linux-user/meson.build +++ b/linux-user/meson.build @@ -10,6 +10,7 @@ linux_user_ss.add(files( 'main.c', 'mmap.c', 'safe-syscall.S', + 'safe-syscall-error.c', 'signal.c', 'strace.c', 'syscall.c', |