diff options
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/x86_64/sysdep.h | 7 |
2 files changed, 12 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog index 21e217a7c1..17b04cd45f 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,10 @@ +2015-12-16 H.J. Lu <hongjiu.lu@intel.com> + + * sysdeps/unix/sysv/linux/x86_64/sysdep.h + (REGISTERS_CLOBBERED_BY_SYSCALL): New. + (INTERNAL_SYSCALL_NCS): Use it. + (INTERNAL_SYSCALL_NCS_TYPES): Likewise. + 2015-12-16 Florian Weimer <fweimer@redhat.com> [BZ #19243] diff --git a/sysdeps/unix/sysv/linux/x86_64/sysdep.h b/sysdeps/unix/sysv/linux/x86_64/sysdep.h index fc132f6791..c364d0816a 100644 --- a/sysdeps/unix/sysv/linux/x86_64/sysdep.h +++ b/sysdeps/unix/sysv/linux/x86_64/sysdep.h @@ -218,6 +218,9 @@ # undef INTERNAL_SYSCALL_DECL # define INTERNAL_SYSCALL_DECL(err) do { } while (0) +/* Registers clobbered by syscall. */ +# define REGISTERS_CLOBBERED_BY_SYSCALL "cc", "r11", "cx" + # define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \ ({ \ unsigned long int resultvar; \ @@ -226,7 +229,7 @@ asm volatile ( \ "syscall\n\t" \ : "=a" (resultvar) \ - : "0" (name) ASM_ARGS_##nr : "memory", "cc", "r11", "cx"); \ + : "0" (name) ASM_ARGS_##nr : "memory", REGISTERS_CLOBBERED_BY_SYSCALL); \ (long int) resultvar; }) # undef INTERNAL_SYSCALL # define INTERNAL_SYSCALL(name, err, nr, args...) \ @@ -240,7 +243,7 @@ asm volatile ( \ "syscall\n\t" \ : "=a" (resultvar) \ - : "0" (name) ASM_ARGS_##nr : "memory", "cc", "r11", "cx"); \ + : "0" (name) ASM_ARGS_##nr : "memory", REGISTERS_CLOBBERED_BY_SYSCALL); \ (long int) resultvar; }) # undef INTERNAL_SYSCALL_TYPES # define INTERNAL_SYSCALL_TYPES(name, err, nr, args...) \ |