1 .global __setjmp 2 .global _setjmp 3 .global setjmp 4 .type __setjmp,@function 5 .type _setjmp,@function 6 .type setjmp,@function 7 __setjmp: 8 _setjmp: 9 setjmp: 10 ld 5, 24(1) # load from the TOC slot in the caller's stack frame 11 b __setjmp_toc 12 13 .localentry __setjmp,.-__setjmp 14 .localentry _setjmp,.-_setjmp 15 .localentry setjmp,.-setjmp 16 mr 5, 2 17 18 .global __setjmp_toc 19 .hidden __setjmp_toc 20 # same as normal setjmp, except TOC pointer to save is provided in r5. 21 # r4 would normally be the 2nd parameter, but we're using r5 to simplify calling from sigsetjmp. 22 # solves the problem of knowing whether to save the TOC pointer from r2 or the caller's stack frame. 23 __setjmp_toc: 24 # 0) store IP into 0, then into the jmpbuf pointed to by r3 (first arg) 25 mflr 0 26 std 0, 0*8(3) 27 # 1) store cr 28 mfcr 0 29 std 0, 1*8(3) 30 # 2) store SP and TOC 31 std 1, 2*8(3) 32 std 5, 3*8(3) 33 # 3) store r14-31 34 std 14, 4*8(3) 35 std 15, 5*8(3) 36 std 16, 6*8(3) 37 std 17, 7*8(3) 38 std 18, 8*8(3) 39 std 19, 9*8(3) 40 std 20, 10*8(3) 41 std 21, 11*8(3) 42 std 22, 12*8(3) 43 std 23, 13*8(3) 44 std 24, 14*8(3) 45 std 25, 15*8(3) 46 std 26, 16*8(3) 47 std 27, 17*8(3) 48 std 28, 18*8(3) 49 std 29, 19*8(3) 50 std 30, 20*8(3) 51 std 31, 21*8(3) 52 # 4) store floating point registers f14-f31 53 stfd 14, 22*8(3) 54 stfd 15, 23*8(3) 55 stfd 16, 24*8(3) 56 stfd 17, 25*8(3) 57 stfd 18, 26*8(3) 58 stfd 19, 27*8(3) 59 stfd 20, 28*8(3) 60 stfd 21, 29*8(3) 61 stfd 22, 30*8(3) 62 stfd 23, 31*8(3) 63 stfd 24, 32*8(3) 64 stfd 25, 33*8(3) 65 stfd 26, 34*8(3) 66 stfd 27, 35*8(3) 67 stfd 28, 36*8(3) 68 stfd 29, 37*8(3) 69 stfd 30, 38*8(3) 70 stfd 31, 39*8(3) 71 72 # 5) store vector registers v20-v31 73 addi 3, 3, 40*8 74 stvx 20, 0, 3 ; addi 3, 3, 16 75 stvx 21, 0, 3 ; addi 3, 3, 16 76 stvx 22, 0, 3 ; addi 3, 3, 16 77 stvx 23, 0, 3 ; addi 3, 3, 16 78 stvx 24, 0, 3 ; addi 3, 3, 16 79 stvx 25, 0, 3 ; addi 3, 3, 16 80 stvx 26, 0, 3 ; addi 3, 3, 16 81 stvx 27, 0, 3 ; addi 3, 3, 16 82 stvx 28, 0, 3 ; addi 3, 3, 16 83 stvx 29, 0, 3 ; addi 3, 3, 16 84 stvx 30, 0, 3 ; addi 3, 3, 16 85 stvx 31, 0, 3 86 87 # 6) return 0 88 li 3, 0 89 blr 90