54ee14b388
2003-09-23 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/powerpc/powerpc32/Versions [libc] (GLIBC_2.3.3): Add setcontext, getcontext, swapcontext, and makecontext. * sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h: Correct change for include Altivec support for PPC32. It was not compatible. * sysdeps/unix/sysv/linux/powerpc/powerpc32/ucontext_i.h: Adjust offsets for ucontext_t change. * sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext.S: Adjust for ucontext_t change. Add compatibility code. * sysdeps/unix/sysv/linux/powerpc/powerpc32/makecontext.S: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext.S: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S: Likewise. Patch by Paul Mackerras <paulus@samba.org>. 2003-02-25 Randolph Chung <tausq@debian.org> * sysdeps/hppa/Makefile: Include compat code in build. * sysdeps/hppa/libgcc-compat.c: New file. * sysdeps/hppa/Dist: Add libgcc-compat.c. * sysdeps/hppa/Versions [GLIBC_2.2]: Add __clz_tab.
165 lines
4.6 KiB
ArmAsm
165 lines
4.6 KiB
ArmAsm
/* Jump to a new context.
|
|
Copyright (C) 2002 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <sysdep.h>
|
|
#include <shlib-compat.h>
|
|
|
|
#define __ASSEMBLY__
|
|
#include <asm/ptrace.h>
|
|
#include "ucontext_i.h"
|
|
|
|
ENTRY(__setcontext)
|
|
mflr r0
|
|
stwu r1,-16(r1)
|
|
stw r0,20(r1)
|
|
stw r31,12(r1)
|
|
lwz r31,_UC_REGS_PTR(r3)
|
|
|
|
/*
|
|
* If this ucontext refers to the point where we were interrupted
|
|
* by a signal, we have to use the rt_sigreturn system call to
|
|
* return to the context so we get both LR and CTR restored.
|
|
*
|
|
* Otherwise, the context we are restoring is either just after
|
|
* a procedure call (getcontext/swapcontext) or at the beginning
|
|
* of a procedure call (makecontext), so we don't need to restore
|
|
* r0, xer, ctr. We don't restore r2 since it will be used as
|
|
* the TLS pointer.
|
|
*/
|
|
lwz r0,_UC_GREGS+(PT_MSR*4)(r31)
|
|
cmpwi r0,0
|
|
bne L(do_sigret)
|
|
|
|
/* Restore the signal mask */
|
|
li r5,0
|
|
addi r4,r3,_UC_SIGMASK
|
|
li r3,SIG_SETMASK
|
|
bl JUMPTARGET(sigprocmask)
|
|
cmpwi r3,0
|
|
bne L(error_exit)
|
|
|
|
/* Restore the floating-point registers */
|
|
lfd fp31,_UC_FREGS+(32*8)(r31)
|
|
lfd fp0,_UC_FREGS+(0*8)(r31)
|
|
mtfsf 0xff,fp31
|
|
lfd fp1,_UC_FREGS+(1*8)(r31)
|
|
lfd fp2,_UC_FREGS+(2*8)(r31)
|
|
lfd fp3,_UC_FREGS+(3*8)(r31)
|
|
lfd fp4,_UC_FREGS+(4*8)(r31)
|
|
lfd fp5,_UC_FREGS+(5*8)(r31)
|
|
lfd fp6,_UC_FREGS+(6*8)(r31)
|
|
lfd fp7,_UC_FREGS+(7*8)(r31)
|
|
lfd fp8,_UC_FREGS+(8*8)(r31)
|
|
lfd fp9,_UC_FREGS+(9*8)(r31)
|
|
lfd fp10,_UC_FREGS+(10*8)(r31)
|
|
lfd fp11,_UC_FREGS+(11*8)(r31)
|
|
lfd fp12,_UC_FREGS+(12*8)(r31)
|
|
lfd fp13,_UC_FREGS+(13*8)(r31)
|
|
lfd fp14,_UC_FREGS+(14*8)(r31)
|
|
lfd fp15,_UC_FREGS+(15*8)(r31)
|
|
lfd fp16,_UC_FREGS+(16*8)(r31)
|
|
lfd fp17,_UC_FREGS+(17*8)(r31)
|
|
lfd fp18,_UC_FREGS+(18*8)(r31)
|
|
lfd fp19,_UC_FREGS+(19*8)(r31)
|
|
lfd fp20,_UC_FREGS+(20*8)(r31)
|
|
lfd fp21,_UC_FREGS+(21*8)(r31)
|
|
lfd fp22,_UC_FREGS+(22*8)(r31)
|
|
lfd fp23,_UC_FREGS+(23*8)(r31)
|
|
lfd fp24,_UC_FREGS+(24*8)(r31)
|
|
lfd fp25,_UC_FREGS+(25*8)(r31)
|
|
lfd fp26,_UC_FREGS+(26*8)(r31)
|
|
lfd fp27,_UC_FREGS+(27*8)(r31)
|
|
lfd fp28,_UC_FREGS+(28*8)(r31)
|
|
lfd fp29,_UC_FREGS+(29*8)(r31)
|
|
lfd fp30,_UC_FREGS+(30*8)(r31)
|
|
lfd fp31,_UC_FREGS+(31*8)(r31)
|
|
|
|
/* Restore LR and CCR, and set CTR to the NIP value */
|
|
lwz r3,_UC_GREGS+(PT_LNK*4)(r31)
|
|
lwz r4,_UC_GREGS+(PT_NIP*4)(r31)
|
|
lwz r5,_UC_GREGS+(PT_CCR*4)(r31)
|
|
mtlr r3
|
|
mtctr r4
|
|
mtcr r5
|
|
|
|
/* Restore the general registers */
|
|
lwz r1,_UC_GREGS+(PT_R1*4)(r31)
|
|
lwz r3,_UC_GREGS+(PT_R3*4)(r31)
|
|
lwz r4,_UC_GREGS+(PT_R4*4)(r31)
|
|
lwz r5,_UC_GREGS+(PT_R5*4)(r31)
|
|
lwz r6,_UC_GREGS+(PT_R6*4)(r31)
|
|
lwz r7,_UC_GREGS+(PT_R7*4)(r31)
|
|
lwz r8,_UC_GREGS+(PT_R8*4)(r31)
|
|
lwz r9,_UC_GREGS+(PT_R9*4)(r31)
|
|
lwz r10,_UC_GREGS+(PT_R10*4)(r31)
|
|
lwz r11,_UC_GREGS+(PT_R11*4)(r31)
|
|
lwz r12,_UC_GREGS+(PT_R12*4)(r31)
|
|
lwz r13,_UC_GREGS+(PT_R13*4)(r31)
|
|
lwz r14,_UC_GREGS+(PT_R14*4)(r31)
|
|
lwz r15,_UC_GREGS+(PT_R15*4)(r31)
|
|
lwz r16,_UC_GREGS+(PT_R16*4)(r31)
|
|
lwz r17,_UC_GREGS+(PT_R17*4)(r31)
|
|
lwz r18,_UC_GREGS+(PT_R18*4)(r31)
|
|
lwz r19,_UC_GREGS+(PT_R19*4)(r31)
|
|
lwz r20,_UC_GREGS+(PT_R20*4)(r31)
|
|
lwz r21,_UC_GREGS+(PT_R21*4)(r31)
|
|
lwz r22,_UC_GREGS+(PT_R22*4)(r31)
|
|
lwz r23,_UC_GREGS+(PT_R23*4)(r31)
|
|
lwz r24,_UC_GREGS+(PT_R24*4)(r31)
|
|
lwz r25,_UC_GREGS+(PT_R25*4)(r31)
|
|
lwz r26,_UC_GREGS+(PT_R26*4)(r31)
|
|
lwz r27,_UC_GREGS+(PT_R27*4)(r31)
|
|
lwz r28,_UC_GREGS+(PT_R28*4)(r31)
|
|
lwz r29,_UC_GREGS+(PT_R29*4)(r31)
|
|
lwz r30,_UC_GREGS+(PT_R30*4)(r31)
|
|
lwz r31,_UC_GREGS+(PT_R31*4)(r31)
|
|
|
|
bctr
|
|
|
|
L(error_exit):
|
|
lwz r31,12(r1)
|
|
lwz r0,20(r1)
|
|
addi r1,r1,16
|
|
mtlr r0
|
|
blr
|
|
|
|
L(do_sigret):
|
|
addi r1,r3,-0xd0
|
|
li r0,SYS_ify(rt_sigreturn)
|
|
sc
|
|
/* NOTREACHED */
|
|
|
|
PSEUDO_END (__setcontext)
|
|
|
|
versioned_symbol (libc, __setcontext, setcontext, GLIBC_2_3_3)
|
|
|
|
#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_3)
|
|
|
|
#define _ERRNO_H 1
|
|
#include <bits/errno.h>
|
|
|
|
ENTRY (__setcontext_stub)
|
|
li r3,ENOSYS
|
|
b JUMPTARGET(__syscall_error)
|
|
END (__setcontext_stub)
|
|
|
|
compat_symbol (libc, __setcontext_stub, setcontext, GLIBC_2_0)
|
|
|
|
#endif
|