From e4c23a029a54c8c7788eff9ca771a01cccaaa0ce Mon Sep 17 00:00:00 2001 From: John David Anglin <danglin@gcc.gnu.org> Date: Sun, 3 Nov 2019 16:28:01 -0500 Subject: hppa: Align __clone stack argument to 8 bytes (Bug 25066) The hppa architecture requires strict alignment for loads and stores. As a result, the minimum stack alignment that will work is 8 bytes. This patch adjusts __clone() to align the stack argument passed to it. It also adjusts slightly some formatting. This fixes the nptl/tst-tls1 test. --- sysdeps/unix/sysv/linux/hppa/clone.S | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'sysdeps/unix') diff --git a/sysdeps/unix/sysv/linux/hppa/clone.S b/sysdeps/unix/sysv/linux/hppa/clone.S index 6db2cb5dd5..372d29a838 100644 --- a/sysdeps/unix/sysv/linux/hppa/clone.S +++ b/sysdeps/unix/sysv/linux/hppa/clone.S @@ -73,13 +73,18 @@ ENTRY(__clone) #endif /* Sanity check arguments. */ - comib,=,n 0, %arg0, .LerrorSanity /* no NULL function pointers */ - comib,=,n 0, %arg1, .LerrorSanity /* no NULL stack pointers */ + comib,=,n 0,%arg0,.LerrorSanity /* no NULL function pointers */ + comib,=,n 0,%arg1,.LerrorSanity /* no NULL stack pointers */ + + /* Ensure stack argument is 8-byte aligned. */ + ldo 7(%r25),%r25 + depi 0,31,3,%r25 /* Save the function pointer, arg, and flags on the new stack. */ stwm %r26, 64(%r25) stw %r23, -60(%r25) stw %r24, -56(%r25) + /* Clone arguments are (int flags, void * child_stack) */ copy %r24, %r26 /* flags are first */ /* User stack pointer is in the correct register already */ -- cgit v1.2.3-70-g09d2