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| author | Chris Metcalf <cmetcalf@ezchip.com> | 2015-01-05 12:06:15 -0500 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@ezchip.com> | 2015-01-05 12:06:15 -0500 |
| commit | 7ea793f39ca1362bc1d6587d29b1e7f52eb8a9a1 (patch) | |
| tree | d652659b16f7182dad990df318c9d5aeab8b0a92 | |
| parent | 1dca195e1c50d69fa4f0d18e821ec68f5d286df4 (diff) | |
| download | glibc-7ea793f39ca1362bc1d6587d29b1e7f52eb8a9a1.tar.gz glibc-7ea793f39ca1362bc1d6587d29b1e7f52eb8a9a1.tar.xz glibc-7ea793f39ca1362bc1d6587d29b1e7f52eb8a9a1.zip | |
tile: check error properly for vDSO calls
The tile vDSO vsyscalls were not properly setting the error value. Conventionally, tile returns the same "non-negative success, negative errno" value that x86 does (in r0), but it also returns "zero or positive errno" in r1, which is what the regular syscall code checks. This change uses that convention for the vDSO calls as well.
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/tile/bits/libc-vdso.h | 12 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/tile/init-first.c | 6 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/tile/sysdep.h | 8 |
4 files changed, 27 insertions, 6 deletions
diff --git a/ChangeLog b/ChangeLog index 123b0b28fc..8482b88f8a 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,12 @@ 2015-01-05 Chris Metcalf <cmetcalf@ezchip.com> + * sysdeps/unix/sysv/linux/tile/bits/libc-vdso.h: Fix return type + for __vdso_* functions in declarations. + * sysdeps/unix/sysv/linux/tile/init-first.c: Likewise for + definitions. + * sysdeps/unix/sysv/linux/tile/sysdep.h (INLINE_VSYSCALL, + INTERNAL_VSYSCALL): Use struct return types to check for error. + * sysdeps/ieee754/dbl-64/wordsize-64/s_llround.c [!defined _LP64 && REGISTER_CAST_INT32_TO_INT64]: Provide explicit lround() function with cast from llround(). diff --git a/sysdeps/unix/sysv/linux/tile/bits/libc-vdso.h b/sysdeps/unix/sysv/linux/tile/bits/libc-vdso.h index cc720f1db6..44f828630f 100644 --- a/sysdeps/unix/sysv/linux/tile/bits/libc-vdso.h +++ b/sysdeps/unix/sysv/linux/tile/bits/libc-vdso.h @@ -22,10 +22,18 @@ #ifdef SHARED -extern long int (*__vdso_gettimeofday) (struct timeval *, void *) +struct syscall_return_value +{ + long int value; + long int error; +}; + +extern struct syscall_return_value (*__vdso_gettimeofday) (struct timeval *, + void *) attribute_hidden; -extern long int (*__vdso_clock_gettime) (clockid_t, struct timespec *); +extern struct syscall_return_value (*__vdso_clock_gettime) (clockid_t, + struct timespec *); #endif diff --git a/sysdeps/unix/sysv/linux/tile/init-first.c b/sysdeps/unix/sysv/linux/tile/init-first.c index 6e7917c341..75dbfd79b9 100644 --- a/sysdeps/unix/sysv/linux/tile/init-first.c +++ b/sysdeps/unix/sysv/linux/tile/init-first.c @@ -19,9 +19,11 @@ #include <dl-vdso.h> #include <bits/libc-vdso.h> -long int (*__vdso_gettimeofday) (struct timeval *, void *) attribute_hidden; +struct syscall_return_value (*__vdso_gettimeofday) (struct timeval *, void *) + attribute_hidden; -long int (*__vdso_clock_gettime) (clockid_t, struct timespec *) +struct syscall_return_value (*__vdso_clock_gettime) (clockid_t, + struct timespec *) __attribute__ ((nocommon)); strong_alias (__vdso_clock_gettime, __GI___vdso_clock_gettime attribute_hidden) diff --git a/sysdeps/unix/sysv/linux/tile/sysdep.h b/sysdeps/unix/sysv/linux/tile/sysdep.h index 074b916764..64c8920645 100644 --- a/sysdeps/unix/sysv/linux/tile/sysdep.h +++ b/sysdeps/unix/sysv/linux/tile/sysdep.h @@ -217,7 +217,9 @@ __typeof (__vdso_##name) vdsop = __vdso_##name; \ if (vdsop != NULL) \ { \ - sc_ret = vdsop (args); \ + struct syscall_return_value rv = vdsop (args); \ + sc_ret = rv.value; \ + sc_err = rv.error; \ if (!INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \ goto out; \ if (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err) != ENOSYS) \ @@ -242,7 +244,9 @@ __typeof (__vdso_##name) vdsop = __vdso_##name; \ if (vdsop != NULL) \ { \ - v_ret = vdsop (args); \ + struct syscall_return_value rv = vdsop (args); \ + v_ret = rv.value; \ + err = rv.error; \ if (!INTERNAL_SYSCALL_ERROR_P (v_ret, err) \ || INTERNAL_SYSCALL_ERRNO (v_ret, err) != ENOSYS) \ goto out; \ |