examples/ppc_setjmp.S

   1 /* setjmp for PowerPC.
   2    Copyright (C) 1995, 1996, 1997, 1999, 2000 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <ppc_asm.tmpl>
  21
  22 # define JB_GPR1   0  /* Also known as the stack pointer */
  23 # define JB_GPR2   1
  24 # define JB_LR     2  /* The address we will return to */
  25 # define JB_GPRS   3  /* GPRs 14 through 31 are saved, 18 in total */
  26 # define JB_CR     21 /* Condition code registers. */
  27 # define JB_FPRS   22 /* FPRs 14 through 31 are saved, 18*2 words total */
  28 # define JB_SIZE   (58*4)
  29
  30 #define FP(x...) x
  31
  32 .globl      setctxsp;
  33 setctxsp:
  34         mr  r1, r3
  35         blr
  36
  37 .globl      ppc_setjmp;
  38 ppc_setjmp:
  39         stw  r1,(JB_GPR1*4)(3)
  40         mflr r0
  41         stw  r2,(JB_GPR2*4)(3)
  42         stw  r14,((JB_GPRS+0)*4)(3)
  43 FP(     stfd 14,((JB_FPRS+0*2)*4)(3))
  44         stw  r0,(JB_LR*4)(3)
  45         stw  r15,((JB_GPRS+1)*4)(3)
  46 FP(     stfd 15,((JB_FPRS+1*2)*4)(3))
  47         mfcr r0
  48         stw  r16,((JB_GPRS+2)*4)(3)
  49 FP(     stfd 16,((JB_FPRS+2*2)*4)(3))
  50         stw  r0,(JB_CR*4)(3)
  51         stw  r17,((JB_GPRS+3)*4)(3)
  52 FP(     stfd 17,((JB_FPRS+3*2)*4)(3))
  53         stw  r18,((JB_GPRS+4)*4)(3)
  54 FP(     stfd 18,((JB_FPRS+4*2)*4)(3))
  55         stw  r19,((JB_GPRS+5)*4)(3)
  56 FP(     stfd 19,((JB_FPRS+5*2)*4)(3))
  57         stw  r20,((JB_GPRS+6)*4)(3)
  58 FP(     stfd 20,((JB_FPRS+6*2)*4)(3))
  59         stw  r21,((JB_GPRS+7)*4)(3)
  60 FP(     stfd 21,((JB_FPRS+7*2)*4)(3))
  61         stw  r22,((JB_GPRS+8)*4)(3)
  62 FP(     stfd 22,((JB_FPRS+8*2)*4)(3))
  63         stw  r23,((JB_GPRS+9)*4)(3)
  64 FP(     stfd 23,((JB_FPRS+9*2)*4)(3))
  65         stw  r24,((JB_GPRS+10)*4)(3)
  66 FP(     stfd 24,((JB_FPRS+10*2)*4)(3))
  67         stw  r25,((JB_GPRS+11)*4)(3)
  68 FP(     stfd 25,((JB_FPRS+11*2)*4)(3))
  69         stw  r26,((JB_GPRS+12)*4)(3)
  70 FP(     stfd 26,((JB_FPRS+12*2)*4)(3))
  71         stw  r27,((JB_GPRS+13)*4)(3)
  72 FP(     stfd 27,((JB_FPRS+13*2)*4)(3))
  73         stw  r28,((JB_GPRS+14)*4)(3)
  74 FP(     stfd 28,((JB_FPRS+14*2)*4)(3))
  75         stw  r29,((JB_GPRS+15)*4)(3)
  76 FP(     stfd 29,((JB_FPRS+15*2)*4)(3))
  77         stw  r30,((JB_GPRS+16)*4)(3)
  78 FP(     stfd 30,((JB_FPRS+16*2)*4)(3))
  79         stw  r31,((JB_GPRS+17)*4)(3)
  80 FP(     stfd 31,((JB_FPRS+17*2)*4)(3))
  81
  82         li 3, 0
  83         blr