2003-06-18 03:38:07 +00:00
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/* Save current context.
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Copyright (C) 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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2003-09-24 03:22:56 +00:00
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#include <shlib-compat.h>
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2003-06-18 03:38:07 +00:00
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#define __ASSEMBLY__
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#include <asm/ptrace.h>
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#include "ucontext_i.h"
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ENTRY(__getcontext)
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2003-09-24 03:22:56 +00:00
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/*
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* Since we are not attempting to save the altivec registers,
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* there is no need to get the register storage space
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* aligned on a 16-byte boundary.
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*/
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addi r3,r3,_UC_REG_SPACE
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stw r3,_UC_REGS_PTR - _UC_REG_SPACE(r3)
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2003-06-18 03:38:07 +00:00
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stw r0,_UC_GREGS+(PT_R0*4)(r3)
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stw r1,_UC_GREGS+(PT_R1*4)(r3)
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mflr r0
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stwu r1,-16(r1)
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stw r0,20(r1)
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stw r0,_UC_GREGS+(PT_LNK*4)(r3)
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stw r0,_UC_GREGS+(PT_NIP*4)(r3)
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stw r2,_UC_GREGS+(PT_R2*4)(r3)
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stw r4,_UC_GREGS+(PT_R4*4)(r3)
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stw r5,_UC_GREGS+(PT_R5*4)(r3)
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stw r6,_UC_GREGS+(PT_R6*4)(r3)
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stw r7,_UC_GREGS+(PT_R7*4)(r3)
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stw r8,_UC_GREGS+(PT_R8*4)(r3)
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stw r9,_UC_GREGS+(PT_R9*4)(r3)
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stw r10,_UC_GREGS+(PT_R10*4)(r3)
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stw r11,_UC_GREGS+(PT_R11*4)(r3)
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stw r12,_UC_GREGS+(PT_R12*4)(r3)
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stw r13,_UC_GREGS+(PT_R13*4)(r3)
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stw r14,_UC_GREGS+(PT_R14*4)(r3)
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stw r15,_UC_GREGS+(PT_R15*4)(r3)
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stw r16,_UC_GREGS+(PT_R16*4)(r3)
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stw r17,_UC_GREGS+(PT_R17*4)(r3)
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stw r18,_UC_GREGS+(PT_R18*4)(r3)
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stw r19,_UC_GREGS+(PT_R19*4)(r3)
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stw r20,_UC_GREGS+(PT_R20*4)(r3)
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stw r21,_UC_GREGS+(PT_R21*4)(r3)
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stw r22,_UC_GREGS+(PT_R22*4)(r3)
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stw r23,_UC_GREGS+(PT_R23*4)(r3)
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stw r24,_UC_GREGS+(PT_R24*4)(r3)
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stw r25,_UC_GREGS+(PT_R25*4)(r3)
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stw r26,_UC_GREGS+(PT_R26*4)(r3)
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stw r27,_UC_GREGS+(PT_R27*4)(r3)
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stw r28,_UC_GREGS+(PT_R28*4)(r3)
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stw r29,_UC_GREGS+(PT_R29*4)(r3)
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stw r30,_UC_GREGS+(PT_R30*4)(r3)
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stw r31,_UC_GREGS+(PT_R31*4)(r3)
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mfctr r0
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stw r0,_UC_GREGS+(PT_CTR*4)(r3)
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mfxer r0
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stw r0,_UC_GREGS+(PT_XER*4)(r3)
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mfcr r0
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stw r0,_UC_GREGS+(PT_CCR*4)(r3)
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/* Set the return value of getcontext to "success". R3 is the only
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register whose value is not preserved in the saved context. */
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li r0,0
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stw r0,_UC_GREGS+(PT_R3*4)(r3)
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/* Zero fill fields that can't be set in user state. */
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stw r0,_UC_GREGS+(PT_MSR*4)(r3)
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stw r0,_UC_GREGS+(PT_MQ*4)(r3)
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/* Save the floating-point registers */
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stfd fp0,_UC_FREGS+(0*8)(r3)
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stfd fp1,_UC_FREGS+(1*8)(r3)
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stfd fp2,_UC_FREGS+(2*8)(r3)
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stfd fp3,_UC_FREGS+(3*8)(r3)
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stfd fp4,_UC_FREGS+(4*8)(r3)
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stfd fp5,_UC_FREGS+(5*8)(r3)
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stfd fp6,_UC_FREGS+(6*8)(r3)
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stfd fp7,_UC_FREGS+(7*8)(r3)
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stfd fp8,_UC_FREGS+(8*8)(r3)
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stfd fp9,_UC_FREGS+(9*8)(r3)
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stfd fp10,_UC_FREGS+(10*8)(r3)
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stfd fp11,_UC_FREGS+(11*8)(r3)
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stfd fp12,_UC_FREGS+(12*8)(r3)
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stfd fp13,_UC_FREGS+(13*8)(r3)
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stfd fp14,_UC_FREGS+(14*8)(r3)
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stfd fp15,_UC_FREGS+(15*8)(r3)
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stfd fp16,_UC_FREGS+(16*8)(r3)
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stfd fp17,_UC_FREGS+(17*8)(r3)
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stfd fp18,_UC_FREGS+(18*8)(r3)
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stfd fp19,_UC_FREGS+(19*8)(r3)
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stfd fp20,_UC_FREGS+(20*8)(r3)
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stfd fp21,_UC_FREGS+(21*8)(r3)
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stfd fp22,_UC_FREGS+(22*8)(r3)
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stfd fp23,_UC_FREGS+(23*8)(r3)
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stfd fp24,_UC_FREGS+(24*8)(r3)
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stfd fp25,_UC_FREGS+(25*8)(r3)
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stfd fp26,_UC_FREGS+(26*8)(r3)
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stfd fp27,_UC_FREGS+(27*8)(r3)
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stfd fp28,_UC_FREGS+(28*8)(r3)
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stfd fp29,_UC_FREGS+(29*8)(r3)
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mffs fp0
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stfd fp30,_UC_FREGS+(30*8)(r3)
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stfd fp31,_UC_FREGS+(31*8)(r3)
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stfd fp0,_UC_FREGS+(32*8)(r3)
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2003-09-24 03:22:56 +00:00
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addi r5,r3,_UC_SIGMASK - _UC_REG_SPACE
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2003-06-18 03:38:07 +00:00
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li r4,0
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li r3,SIG_BLOCK
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bl JUMPTARGET(sigprocmask)
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lwz r0,20(r1)
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addi r1,r1,16
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mtlr r0
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blr
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PSEUDO_END(__getcontext)
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2003-09-24 03:22:56 +00:00
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versioned_symbol (libc, __getcontext, getcontext, GLIBC_2_3_3)
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#if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_3_3)
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#define _ERRNO_H 1
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#include <bits/errno.h>
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ENTRY (__getcontext_stub)
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li r3,ENOSYS
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b JUMPTARGET(__syscall_error)
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END (__getcontext_stub)
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compat_symbol (libc, __getcontext_stub, getcontext, GLIBC_2_1)
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#endif
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