From 482b2f87a88d30fd5bc0277e6a3f75efeb1aff7f Mon Sep 17 00:00:00 2001 From: Adhemerval Zanella Date: Tue, 17 Nov 2015 18:19:06 -0200 Subject: Define __ASSUME_ALIGNED_REGISTER_PAIRS for missing ports This patch defines __ASSUME_ALIGNED_REGISTER_PAIRS for the missing ports that require 64-bit value (e.g., long long) to be aligned to an even register pair in argument passing. No code change is expected, tested with builds for powerpc32, mips-o32, and armhf. * sysdeps/unix/sysv/linux/arm/kernel-features.h (__ASSUME_ALIGNED_REGISTER_PAIRS): Define. * sysdeps/unix/sysv/linux/mips/kernel-features.h [_MIPS_SIM == _ABIO32] (__ASSUME_ALIGNED_REGISTER_PAIRS): Likewise. * sysdeps/unix/sysv/linux/powerpc/kernel-features.h [!__powerpc64__] (__ASSUME_ALIGNED_REGISTER_PAIRS): Likewise. --- ChangeLog | 9 +++++++++ sysdeps/unix/sysv/linux/arm/kernel-features.h | 4 ++++ sysdeps/unix/sysv/linux/mips/kernel-features.h | 6 ++++++ sysdeps/unix/sysv/linux/powerpc/kernel-features.h | 6 ++++++ 4 files changed, 25 insertions(+) diff --git a/ChangeLog b/ChangeLog index c8df2c239b..c0ff30780d 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,12 @@ +2016-04-11 Adhemerval Zanella + + * sysdeps/unix/sysv/linux/arm/kernel-features.h + (__ASSUME_ALIGNED_REGISTER_PAIRS): Define. + * sysdeps/unix/sysv/linux/mips/kernel-features.h + [_MIPS_SIM == _ABIO32] (__ASSUME_ALIGNED_REGISTER_PAIRS): Likewise. + * sysdeps/unix/sysv/linux/powerpc/kernel-features.h + [!__powerpc64__] (__ASSUME_ALIGNED_REGISTER_PAIRS): Likewise. + 2016-04-11 Florian Weimer [BZ #19865] diff --git a/sysdeps/unix/sysv/linux/arm/kernel-features.h b/sysdeps/unix/sysv/linux/arm/kernel-features.h index c04c4e2a02..0a9ed772e5 100644 --- a/sysdeps/unix/sysv/linux/arm/kernel-features.h +++ b/sysdeps/unix/sysv/linux/arm/kernel-features.h @@ -27,3 +27,7 @@ # undef __ASSUME_REQUEUE_PI # undef __ASSUME_SET_ROBUST_LIST #endif + +/* Define this if your 32-bit syscall API requires 64-bit register + pairs to start with an even-number register. */ +#define __ASSUME_ALIGNED_REGISTER_PAIRS 1 diff --git a/sysdeps/unix/sysv/linux/mips/kernel-features.h b/sysdeps/unix/sysv/linux/mips/kernel-features.h index 7f8c98a4da..ef4b5204ec 100644 --- a/sysdeps/unix/sysv/linux/mips/kernel-features.h +++ b/sysdeps/unix/sysv/linux/mips/kernel-features.h @@ -28,3 +28,9 @@ # undef __ASSUME_REQUEUE_PI # undef __ASSUME_SET_ROBUST_LIST #endif + +/* Define this if your 32-bit syscall API requires 64-bit register + pairs to start with an even-number register. */ +#if _MIPS_SIM == _ABIO32 +# define __ASSUME_ALIGNED_REGISTER_PAIRS 1 +#endif diff --git a/sysdeps/unix/sysv/linux/powerpc/kernel-features.h b/sysdeps/unix/sysv/linux/powerpc/kernel-features.h index 171c030b03..38bb0bc3f9 100644 --- a/sysdeps/unix/sysv/linux/powerpc/kernel-features.h +++ b/sysdeps/unix/sysv/linux/powerpc/kernel-features.h @@ -42,4 +42,10 @@ /* The sendmmsg syscall was added for PowerPC in 3.0. */ #define __ASSUME_SENDMMSG_SYSCALL_WITH_SOCKETCALL 1 +/* Define this if your 32-bit syscall API requires 64-bit register + pairs to start with an even-number register. */ +#ifndef __powerpc64__ +# define __ASSUME_ALIGNED_REGISTER_PAIRS 1 +#endif + #include_next -- cgit 1.4.1