arch/arm-all/posixc/vfork_longjmp.s

   1 /*
   2  * vfork_longjmp.s
   3  *
   4  *  Created on: Aug 5, 2009
   5  *      Author: misc
   6  *
   7  * $Id$
   8  */
   9
  10 #include "aros/arm/asm.h"
  11
  12         .text
  13         .align  2
  14         .global AROS_CDEFNAME(vfork_longjmp)
  15         .type   AROS_CDEFNAME(vfork_longjmp),%function
  16
  17 AROS_CDEFNAME(vfork_longjmp):
  18         mov     ip, r0                                          /* env into ip register */
  19         ldr     lr, [ip], #4                                    /* restore return address */
  20         mov     r0, r1                                          /* return value from longjmp into r0 and generate condition code */
  21         ldmia   ip!, {r4, r5, r6, r7, r8, r9, sl, fp, sp}       /* restore non-scratch regs */
  22 #ifdef __SOFTFP__
  23         ldr     r1, 1f
  24         ldr     r1, [r1]
  25         mov     r2, AttnFlags
  26         ldrh    r1, [r1, r2]
  27         tst     r1, AFF_FPU
  28         bxeq    lr
  29 #endif
  30         fldmiax ip!, {d8-d15}                                   /* Restore VFP registers - we assume they are available! */
  31         ldr     r1, [ip], #4                                    /* restore VFP status reg */
  32         fmxr    fpscr, r1
  33         bx      lr                                              /* Done! */
  34 #ifdef __SOFTFP__
  35 1:      .word   SysBase
  36 #endif