toolchain/gcc/newlib/libc/machine/iq2000/setjmp.S

   1 /* This is a simple version of setjmp and longjmp for iq2000. */
   2
   3
   4 /* int setjmp (jmp_buf);  */
   5         .globl  setjmp
   6         .ent    setjmp
   7 setjmp:
   8         sw      r16,0(r4)       /* rs0 */
   9         sw      r17,4(r4)       /* rs1 */
  10         sw      r18,8(r4)       /* rs2 */
  11         sw      r19,12(r4)      /* rs3 */
  12         sw      r20,16(r4)      /* rs4 */
  13         sw      r21,20(r4)      /* rs5 */
  14         sw      r22,24(r4)      /* rs6 */
  15         sw      r23,28(r4)      /* rs7 */
  16         sw      r30,32(r4)      /* rs8 */
  17
  18         sw      r29,36(r4)
  19         sw      r31,40(r4)
  20
  21         move    r2,r0
  22
  23         j       r31
  24
  25         .end    setjmp
  26
  27 /* volatile void longjmp (jmp_buf, int);  */
  28         .globl  longjmp
  29         .ent    longjmp
  30 longjmp:
  31         lw      r16,0(r4)       /* rs0 */
  32         lw      r17,4(r4)       /* rs1 */
  33         lw      r18,8(r4)       /* rs2 */
  34         lw      r19,12(r4)      /* rs3 */
  35         lw      r20,16(r4)      /* rs4 */
  36         lw      r21,20(r4)      /* rs5 */
  37         lw      r22,24(r4)      /* rs6 */
  38         lw      r23,28(r4)      /* rs7 */
  39         lw      r30,32(r4)      /* rs8 */
  40
  41         lw      r29,36(r4)
  42         lw      r31,40(r4)
  43
  44         bne     r5,r0,1f
  45         li      r5,1
  46 1:
  47         move    r2,r5
  48
  49         j       r31
  50
  51         .end longjmp