setjmp.s raw

   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