arch/arm/setjmp.S

#
# arch/arm/setjmp.S
#
# setjmp/longjmp for the ARM architecture
#

#include <klibc/asmmacros.h>

#ifndef	__thumb__

#
# "Pure ARM" version
#
# The jmp_buf is assumed to contain the following, in order:
#		r4
#		r5
#		r6
#		r7
#		r8
#		r9
#		r10
#		fp
#		sp
#		lr
#

	.text
	.balign 4
	.globl setjmp
	.type setjmp, #function
setjmp:
	stmia	r0, {r4, r5, r6, r7, r8, r9, r10, fp, sp, lr}
	mov	r0, #0
	BX(lr)
	.size setjmp,.-setjmp

	.text
	.balign 4
	.globl longjmp
	.type longjmp, #function
longjmp:
	ldmia	r0, {r4, r5, r6, r7, r8, r9, r10, fp, sp, lr}
	mov	r0, r1
	BX(lr)
	.size longjmp,.-longjmp

#else /* __thumb__ */

#
# Thumb version
#
# The jmp_buf is assumed to contain the following, in order:
#		lr
#		r4
#		r5
#		r6
#		r7
#		r8
#		r9
#		r10
#		fp
#		sp
#

	.text
	.balign 4
	.globl setjmp
	.type setjmp, #function
	.thumb_func
setjmp:
	mov	r3, lr
	stmia	r0!, {r3, r4, r5, r6, r7}
	mov	r3, r8
	mov	r4, r9
	mov	r5, r10
	mov	r6, fp
	mov	r7, sp
	stmia	r0!, {r3, r4, r5, r6, r7}
	mov	r0, #0
	BX(lr)
	.size setjmp,.-setjmp

	.text
	.balign 4
	.globl longjmp
	.type longjmp, #function
	.thumb_func
longjmp:
	mov	r2, r0
	add	r0, #5*4
	ldmia	r0!, {r3, r4, r5, r6, r7}
	mov	r8, r3
	mov	r9, r4
	mov	r10, r5
	mov	fp, r6
	mov	sp, r7
	ldmia	r2!, {r3, r4, r5, r6, r7}
	mov	r0, r1
	bne	1f
	mov	r0, #1
1:	BX(r3)
	.size longjmp,.-longjmp

#endif /* __thumb__ */
1	#
2	# arch/arm/setjmp.S
3	#
4	# setjmp/longjmp for the ARM architecture
5	#
6
7	#include <klibc/asmmacros.h>
8
9	#ifndef __thumb__
10
11	#
12	# "Pure ARM" version
13	#
14	# The jmp_buf is assumed to contain the following, in order:
15	# r4
16	# r5
17	# r6
18	# r7
19	# r8
20	# r9
21	# r10
22	# fp
23	# sp
24	# lr
25	#
26
27	.text
28	.balign 4
29	.globl setjmp
30	.type setjmp, #function
31	setjmp:
32	stmia r0, {r4, r5, r6, r7, r8, r9, r10, fp, sp, lr}
33	mov r0, #0
34	BX(lr)
35	.size setjmp,.-setjmp
36
37	.text
38	.balign 4
39	.globl longjmp
40	.type longjmp, #function
41	longjmp:
42	ldmia r0, {r4, r5, r6, r7, r8, r9, r10, fp, sp, lr}
43	mov r0, r1
44	BX(lr)
45	.size longjmp,.-longjmp
46
47	#else /* __thumb__ */
48
49	#
50	# Thumb version
51	#
52	# The jmp_buf is assumed to contain the following, in order:
53	# lr
54	# r4
55	# r5
56	# r6
57	# r7
58	# r8
59	# r9
60	# r10
61	# fp
62	# sp
63	#
64
65	.text
66	.balign 4
67	.globl setjmp
68	.type setjmp, #function
69	.thumb_func
70	setjmp:
71	mov r3, lr
72	stmia r0!, {r3, r4, r5, r6, r7}
73	mov r3, r8
74	mov r4, r9
75	mov r5, r10
76	mov r6, fp
77	mov r7, sp
78	stmia r0!, {r3, r4, r5, r6, r7}
79	mov r0, #0
80	BX(lr)
81	.size setjmp,.-setjmp
82
83	.text
84	.balign 4
85	.globl longjmp
86	.type longjmp, #function
87	.thumb_func
88	longjmp:
89	mov r2, r0
90	add r0, #5*4
91	ldmia r0!, {r3, r4, r5, r6, r7}
92	mov r8, r3
93	mov r9, r4
94	mov r10, r5
95	mov fp, r6
96	mov sp, r7
97	ldmia r2!, {r3, r4, r5, r6, r7}
98	mov r0, r1
99	bne 1f
100	mov r0, #1
101	1: BX(r3)
102	.size longjmp,.-longjmp
103
104	#endif /* __thumb__ */