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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2019-06-04 17:29:42 +0000 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2019-09-17 17:09:26 -0300 |
| commit | 7c3eed786021ede69394fe371c9e7c8bd603f5a8 (patch) | |
| tree | 3059e3966fb6230e8bdf2d05337b7958f97d8454 /sysdeps/unix/sysv/linux/mips/sysdep.h | |
| parent | 986a506481d4edb3b5c50c8245e915e39d248c7d (diff) | |
| download | glibc-7c3eed786021ede69394fe371c9e7c8bd603f5a8.tar.gz glibc-7c3eed786021ede69394fe371c9e7c8bd603f5a8.tar.xz glibc-7c3eed786021ede69394fe371c9e7c8bd603f5a8.zip | |
mips: Consolidate INTERNAL_VSYSCALL_CALL
This patch consolidates the mips, mips64, and mips64-n32 INTERNAL_VSYSCALL_CALL on a single implementation. No semantic changes. I checked against a build for mips-linux-gnu, mips64-linux-gnu, and mips64-n32-linux-gnu. * sysdeps/unix/sysv/linux/mips/mips32/sysdep.h (INTERNAL_VSYSCALL_CALL): Remove. * sysdeps/unix/sysv/linux/mips/mips64/n32/sysdep.h (INTERNAL_VSYSCALL_CALL): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h (INTERNAL_VSYSCALL_CALL): Likewise. * sysdeps/unix/sysv/linux/mips/sysdep.h (INTERNAL_VSYSCALL_CALL): New macro.
Diffstat (limited to 'sysdeps/unix/sysv/linux/mips/sysdep.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/mips/sysdep.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/mips/sysdep.h b/sysdeps/unix/sysv/linux/mips/sysdep.h index 5d05c90780..b2045fcc55 100644 --- a/sysdeps/unix/sysv/linux/mips/sysdep.h +++ b/sysdeps/unix/sysv/linux/mips/sysdep.h @@ -22,3 +22,19 @@ /* List of system calls which are supported as vsyscalls. */ #define HAVE_CLOCK_GETTIME_VSYSCALL "__vdso_gettimeofday" #define HAVE_GETTIMEOFDAY_VSYSCALL "__vdso_clock_gettime" + +#ifndef __ASSEMBLER__ + +/* Standard MIPS syscalls have an error flag, and return a positive errno + when the error flag is set. Emulate this behaviour for vsyscalls so that + the INTERNAL_SYSCALL_{ERROR_P,ERRNO} macros work correctly. */ +#define INTERNAL_VSYSCALL_CALL(funcptr, err, nr, args...) \ + ({ \ + long _ret = funcptr (args); \ + err = ((unsigned long) (_ret) >= (unsigned long) -4095L); \ + if (err) \ + _ret = -_ret; \ + _ret; \ + }) + +#endif /* __ASSEMBLER__ */ |