On 2015-12-20, at 2:46 PM, John David Anglin wrote:
> I think we should fix syscall(). It's not used that much.
Attached is glibc fix. Testing.
Dave
--
John David Anglin dave.anglin@xxxxxxxx
diff --git a/sysdeps/unix/sysv/linux/hppa/syscall.c b/sysdeps/unix/sysv/linux/hppa/syscall.c
index 958fa47..9c7ee4f 100644
--- a/sysdeps/unix/sysv/linux/hppa/syscall.c
+++ b/sysdeps/unix/sysv/linux/hppa/syscall.c
@@ -48,8 +48,9 @@ syscall (long int __sysno, ...)
PIC_REG_DEF
LOAD_REGS_6
asm volatile (SAVE_ASM_PIC
- " ble 0x100(%%sr2, %%r0) \n"
" copy %1, %%r20 \n"
+ " ble 0x100(%%sr2, %%r0) \n"
+ " nop \n"
LOAD_ASM_PIC
: "=r" (__res)
: "r" (__sysno) PIC_REG_USE ASM_ARGS_6
diff --git a/sysdeps/unix/sysv/linux/hppa/sysdep.h b/sysdeps/unix/sysv/linux/hppa/sysdep.h
index 2cae70f..cc16c1a 100644
--- a/sysdeps/unix/sysv/linux/hppa/sysdep.h
+++ b/sysdeps/unix/sysv/linux/hppa/sysdep.h
@@ -434,8 +434,9 @@ L(pre_end): ASM_LINE_SEP \
/* FIXME: HACK save/load r19 around syscall */ \
asm volatile( \
SAVE_ASM_PIC \
- " ble 0x100(%%sr2, %%r0)\n" \
" copy %1, %%r20\n" \
+ " ble 0x100(%%sr2, %%r0)\n" \
+ " nop\n" \
LOAD_ASM_PIC \
: "=r" (__res) \
: "r" (name) PIC_REG_USE ASM_ARGS_##nr \
