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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2020-02-03 12:00:19 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2020-02-14 21:09:12 -0300 |
| commit | 861be5fd6601bed58b63ae0eb23097abf1ac0e1c (patch) | |
| tree | 68ef62a9898692a0aef9d5c192266dcb70285f25 | |
| parent | cf1e05f5990aba073864cd0bc681cd017e663351 (diff) | |
| download | glibc-861be5fd6601bed58b63ae0eb23097abf1ac0e1c.tar.gz | |
nios2: Use Linux kABI for syscall return
It changes the nios INTERNAL_SYSCALL_RAW macro to return a negative
value instead of the 'r2' register value on the 'err' macro argument.
The macro INTERNAL_SYSCALL_DECL is no longer required, and the
INTERNAL_SYSCALL_ERROR_P macro follows the other Linux kABIs.
Checked with a build against nios2-linux-gnu.
| -rw-r--r-- | sysdeps/unix/sysv/linux/nios2/sysdep.h | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/sysdeps/unix/sysv/linux/nios2/sysdep.h b/sysdeps/unix/sysv/linux/nios2/sysdep.h index b02730bd23..ae2f2a583f 100644 --- a/sysdeps/unix/sysv/linux/nios2/sysdep.h +++ b/sysdeps/unix/sysv/linux/nios2/sysdep.h @@ -157,13 +157,14 @@ (int) result_var; }) #undef INTERNAL_SYSCALL_DECL -#define INTERNAL_SYSCALL_DECL(err) unsigned int err __attribute__((unused)) +#define INTERNAL_SYSCALL_DECL(err) do { } while (0) #undef INTERNAL_SYSCALL_ERROR_P -#define INTERNAL_SYSCALL_ERROR_P(val, err) ((void) (val), (unsigned int) (err)) +#define INTERNAL_SYSCALL_ERROR_P(val, err) \ + ((unsigned long int) (val) > -4096UL) #undef INTERNAL_SYSCALL_ERRNO -#define INTERNAL_SYSCALL_ERRNO(val, err) ((void) (err), val) +#define INTERNAL_SYSCALL_ERRNO(val, err) (-(val)) #undef INTERNAL_SYSCALL_RAW #define INTERNAL_SYSCALL_RAW(name, err, nr, args...) \ @@ -180,8 +181,7 @@ : "+r" (_r2), "=r" (_err) \ : ASM_ARGS_##nr \ : __SYSCALL_CLOBBERS); \ - _sys_result = _r2; \ - err = _err; \ + _sys_result = _err != 0 ? -_r2 : -_r2; \ } \ (int) _sys_result; }) |