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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2015-11-17 18:19:06 -0200
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2016-04-11 09:15:11 -0300
commit482b2f87a88d30fd5bc0277e6a3f75efeb1aff7f (patch)
tree98eb06f6ab835a2999b810ce11c31d14e8a5df44 /sysdeps
parentd29fb41f4431ca35ea360498ef9d37558ce90d76 (diff)
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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.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/unix/sysv/linux/arm/kernel-features.h4
-rw-r--r--sysdeps/unix/sysv/linux/mips/kernel-features.h6
-rw-r--r--sysdeps/unix/sysv/linux/powerpc/kernel-features.h6
3 files changed, 16 insertions, 0 deletions
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 <kernel-features.h>