diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S b/sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S new file mode 100644 index 0000000000..59dfb82ef5 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S @@ -0,0 +1,138 @@ +/* Save current 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> + +#define __ASSEMBLY__ +#include <asm/ptrace.h> +#include "ucontext_i.h" + +ENTRY(__getcontext) + std r0,(SIGCONTEXT_GP_REGS+(PT_R0*8))(r3) + std r1,(SIGCONTEXT_GP_REGS+(PT_R1*8))(r3) + mflr r0 + std r2,(SIGCONTEXT_GP_REGS+(PT_R2*8))(r3) + std r0,FRAME_LR_SAVE(r1) + std r0,(SIGCONTEXT_GP_REGS+(PT_LNK*8))(r3) + std r0,(SIGCONTEXT_GP_REGS+(PT_NIP*8))(r3) + stdu r1,-128(r1) + std r4,(SIGCONTEXT_GP_REGS+(PT_R4*8))(r3) + std r5,(SIGCONTEXT_GP_REGS+(PT_R5*8))(r3) + std r6,(SIGCONTEXT_GP_REGS+(PT_R6*8))(r3) + std r7,(SIGCONTEXT_GP_REGS+(PT_R7*8))(r3) + std r8,(SIGCONTEXT_GP_REGS+(PT_R8*8))(r3) + std r9,(SIGCONTEXT_GP_REGS+(PT_R9*8))(r3) + std r10,(SIGCONTEXT_GP_REGS+(PT_R10*8))(r3) + std r11,(SIGCONTEXT_GP_REGS+(PT_R11*8))(r3) + std r12,(SIGCONTEXT_GP_REGS+(PT_R12*8))(r3) + std r13,(SIGCONTEXT_GP_REGS+(PT_R13*8))(r3) + std r14,(SIGCONTEXT_GP_REGS+(PT_R14*8))(r3) + std r15,(SIGCONTEXT_GP_REGS+(PT_R15*8))(r3) + std r16,(SIGCONTEXT_GP_REGS+(PT_R16*8))(r3) + std r17,(SIGCONTEXT_GP_REGS+(PT_R17*8))(r3) + std r18,(SIGCONTEXT_GP_REGS+(PT_R18*8))(r3) + std r19,(SIGCONTEXT_GP_REGS+(PT_R19*8))(r3) + std r20,(SIGCONTEXT_GP_REGS+(PT_R20*8))(r3) + std r21,(SIGCONTEXT_GP_REGS+(PT_R21*8))(r3) + std r22,(SIGCONTEXT_GP_REGS+(PT_R22*8))(r3) + std r23,(SIGCONTEXT_GP_REGS+(PT_R23*8))(r3) + std r24,(SIGCONTEXT_GP_REGS+(PT_R24*8))(r3) + std r25,(SIGCONTEXT_GP_REGS+(PT_R25*8))(r3) + std r26,(SIGCONTEXT_GP_REGS+(PT_R26*8))(r3) + std r27,(SIGCONTEXT_GP_REGS+(PT_R27*8))(r3) + std r28,(SIGCONTEXT_GP_REGS+(PT_R28*8))(r3) + std r29,(SIGCONTEXT_GP_REGS+(PT_R29*8))(r3) + std r30,(SIGCONTEXT_GP_REGS+(PT_R30*8))(r3) + std r31,(SIGCONTEXT_GP_REGS+(PT_R31*8))(r3) + mfctr r0 + std r0,(SIGCONTEXT_GP_REGS+(PT_CTR*8))(r3) + mfxer r0 + std r0,(SIGCONTEXT_GP_REGS+(PT_XER*8))(r3) + mfcr r0 + std r0,(SIGCONTEXT_GP_REGS+(PT_CCR*8))(r3) + + /* Set the return value of swapcontext to "success". R3 is the only + register whose value is not preserved in the saved context. */ + li r0,0 + std r0,(SIGCONTEXT_GP_REGS+(PT_R3*8))(r3) + + /* Zero fill fields that can't be set in user state or are unused. */ + std r0,(SIGCONTEXT_GP_REGS+(PT_MSR*8))(r3) + std r0,(SIGCONTEXT_GP_REGS+(34*8))(r3) + std r0,(SIGCONTEXT_GP_REGS+(PT_SOFTE*8))(r3) + std r0,(SIGCONTEXT_GP_REGS+(40*8))(r3) + std r0,(SIGCONTEXT_GP_REGS+(41*8))(r3) + std r0,(SIGCONTEXT_GP_REGS+(42*8))(r3) + std r0,(SIGCONTEXT_GP_REGS+(PT_RESULT*8))(r3) + + /* Set the PT_REGS pointer to the address of sigcontext's gp_regs + field. Struct pt_regs and elf_gregset_t are the same thing. + We kept the regs field for backwards compatibility with + libraries built before we extended sigcontext. */ + addi r0,r3,SIGCONTEXT_GP_REGS + std r0,SIGCONTEXT_PT_REGS(r3) + + stfd fp0,(SIGCONTEXT_FP_REGS+(PT_R0*8))(r3) + stfd fp1,(SIGCONTEXT_FP_REGS+(PT_R1*8))(r3) + stfd fp2,(SIGCONTEXT_FP_REGS+(PT_R2*8))(r3) + stfd fp3,(SIGCONTEXT_FP_REGS+(PT_R3*8))(r3) + stfd fp4,(SIGCONTEXT_FP_REGS+(PT_R4*8))(r3) + stfd fp5,(SIGCONTEXT_FP_REGS+(PT_R5*8))(r3) + stfd fp6,(SIGCONTEXT_FP_REGS+(PT_R6*8))(r3) + stfd fp7,(SIGCONTEXT_FP_REGS+(PT_R7*8))(r3) + stfd fp8,(SIGCONTEXT_FP_REGS+(PT_R8*8))(r3) + stfd fp9,(SIGCONTEXT_FP_REGS+(PT_R9*8))(r3) + stfd fp10,(SIGCONTEXT_FP_REGS+(PT_R10*8))(r3) + stfd fp11,(SIGCONTEXT_FP_REGS+(PT_R11*8))(r3) + stfd fp12,(SIGCONTEXT_FP_REGS+(PT_R12*8))(r3) + stfd fp13,(SIGCONTEXT_FP_REGS+(PT_R13*8))(r3) + stfd fp14,(SIGCONTEXT_FP_REGS+(PT_R14*8))(r3) + stfd fp15,(SIGCONTEXT_FP_REGS+(PT_R15*8))(r3) + stfd fp16,(SIGCONTEXT_FP_REGS+(PT_R16*8))(r3) + stfd fp17,(SIGCONTEXT_FP_REGS+(PT_R17*8))(r3) + stfd fp18,(SIGCONTEXT_FP_REGS+(PT_R18*8))(r3) + stfd fp19,(SIGCONTEXT_FP_REGS+(PT_R19*8))(r3) + stfd fp20,(SIGCONTEXT_FP_REGS+(PT_R20*8))(r3) + stfd fp21,(SIGCONTEXT_FP_REGS+(PT_R21*8))(r3) + stfd fp22,(SIGCONTEXT_FP_REGS+(PT_R22*8))(r3) + stfd fp23,(SIGCONTEXT_FP_REGS+(PT_R23*8))(r3) + stfd fp24,(SIGCONTEXT_FP_REGS+(PT_R24*8))(r3) + stfd fp25,(SIGCONTEXT_FP_REGS+(PT_R25*8))(r3) + stfd fp26,(SIGCONTEXT_FP_REGS+(PT_R26*8))(r3) + stfd fp27,(SIGCONTEXT_FP_REGS+(PT_R27*8))(r3) + stfd fp28,(SIGCONTEXT_FP_REGS+(PT_R28*8))(r3) + stfd fp29,(SIGCONTEXT_GP_REGS+(PT_R29*8))(r3) + mffs fp0 + stfd fp30,(SIGCONTEXT_FP_REGS+(PT_R30*8))(r3) + stfd fp31,(SIGCONTEXT_FP_REGS+(PT_R31*8))(r3) + stfd fp0,(SIGCONTEXT_FP_REGS+(32*8))(r3) + + addi r5,r3,UCONTEXT_SIGMASK + li r4,0 + li r3,SIG_BLOCK + bl .sigprocmask + nop + + ld r0,128+FRAME_LR_SAVE(r1) + addi r1,r1,128 + mtlr r0 + blr +PSEUDO_END(__getcontext) + +weak_alias(__getcontext, getcontext) |