github.com/afumu/libc@v0.0.6/musl/src/setjmp/powerpc64/setjmp.s (about)

     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