src/system/libroot/posix/arch/ppc/sigsetjmp.S

   1 /*
   2  * Copyright 2005, Ingo Weinhold <bonefish@cs.tu-berlin.de>. All rights
   3  * reserved. Distributed under the terms of the Haiku License.
   4  */
   5
   6 #include "setjmp_internal.h"
   7
   8 /* int sigsetjmp(jmp_buf buffer, int saveMask) */
   9 FUNCTION(__sigsetjmp):
  10 FUNCTION(sigsetjmp):
  11         // r3: buffer, r4: saveMask
  12
  13         // store non-volatile general purpose registers
  14         stw             %r1, JMP_REGS_R1(3)
  15         stw             %r2, JMP_REGS_R2(3)
  16         stw             %r13, JMP_REGS_R13(3)
  17         stw             %r14, JMP_REGS_R14(3)
  18         stw             %r15, JMP_REGS_R15(3)
  19         stw             %r16, JMP_REGS_R16(3)
  20         stw             %r17, JMP_REGS_R17(3)
  21         stw             %r18, JMP_REGS_R18(3)
  22         stw             %r19, JMP_REGS_R19(3)
  23         stw             %r20, JMP_REGS_R20(3)
  24         stw             %r21, JMP_REGS_R21(3)
  25         stw             %r22, JMP_REGS_R22(3)
  26         stw             %r23, JMP_REGS_R23(3)
  27         stw             %r24, JMP_REGS_R24(3)
  28         stw             %r25, JMP_REGS_R25(3)
  29         stw             %r26, JMP_REGS_R26(3)
  30         stw             %r27, JMP_REGS_R27(3)
  31         stw             %r28, JMP_REGS_R28(3)
  32         stw             %r29, JMP_REGS_R29(3)
  33         stw             %r30, JMP_REGS_R30(3)
  34         stw             %r31, JMP_REGS_R31(3)
  35
  36         // store special registers (link, condition)
  37         mflr    %r0
  38         stw             %r0, JMP_REGS_LR(3)
  39         mfcr    %r0
  40         stw             %r0, JMP_REGS_CR(3)
  41
  42         b               __setjmp_save_sigs
  43
  44
  45 /* int setjmp(jmp_buf buffer) */
  46 FUNCTION(setjmp):
  47 FUNCTION(_setjmp):
  48         // call __sigsetjmp with saveMask = 0
  49         addi    %r4, 0, 0
  50         b               __sigsetjmp
  51
  52 #pragma weak _setjmp=setjmp