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Fix return pointer save and PIC register restore in __getcontext and

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__setcontext on hppa.

	* sysdeps/unix/sysv/linux/hppa/getcontext.S (__getcontext): Save return
	pointer in frame.
	* sysdeps/unix/sysv/linux/hppa/setcontext.S (__setcontext): Likewise.
	Correct offset used to restore PIC register.
This commit is contained in:
John David Anglin
2017-10-01 11:58:04 -04:00
parent 388784cfdd
commit 8da92e722c
3 changed files with 12 additions and 1 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2017-10-01 John David Anglin <danglin@gcc.gnu.org>
* sysdeps/unix/sysv/linux/hppa/getcontext.S (__getcontext): Save return
pointer in frame.
* sysdeps/unix/sysv/linux/hppa/setcontext.S (__setcontext): Likewise.
Correct offset used to restore PIC register.
2017-09-30 John David Anglin <danglin@gcc.gnu.org> 2017-09-30 John David Anglin <danglin@gcc.gnu.org>
[BZ libc/22165] [BZ libc/22165]

2
sysdeps/unix/sysv/linux/hppa/getcontext.S
View File

@ -129,6 +129,8 @@ ENTRY(__getcontext)
fstds %fr31, 0(%r1) fstds %fr31, 0(%r1)
/* Prologue */ /* Prologue */
stw %r2, -20(%sp)
.cfi_offset 2, -20
stwm %r4, 64(%sp) stwm %r4, 64(%sp)
.cfi_def_cfa_offset -64 .cfi_def_cfa_offset -64
.cfi_offset 4, 0 .cfi_offset 4, 0

4
sysdeps/unix/sysv/linux/hppa/setcontext.S
View File

@ -25,6 +25,8 @@
ENTRY(__setcontext) ENTRY(__setcontext)
/* Prologue */ /* Prologue */
stw %r2, -20(%sp)
.cfi_offset 2, -20
stwm %r3, 64(%sp) stwm %r3, 64(%sp)
.cfi_def_cfa_offset -64 .cfi_def_cfa_offset -64
.cfi_offset 3, 0 .cfi_offset 3, 0
@ -151,7 +153,7 @@ ENTRY(__setcontext)
/* Epilogue */ /* Epilogue */
ldw -84(%r30), %r2 ldw -84(%r30), %r2
#ifdef PIC #ifdef PIC
ldw -96(%r30), %r19 ldw -32(%r30), %r19
#endif #endif
bv %r0(%r2) bv %r0(%r2)
ldwm -64(%r30), %r3 ldwm -64(%r30), %r3