1 ##############################################################################
2 # setjmp.S -- CRX setjmp routine                                             #
3 #                                                                            #
4 /* Copyright (c) 2004 National Semiconductor Corporation                     */
5 #                                                                            #
6 # The authors hereby grant permission to use, copy, modify, distribute,      #
7 # and license this software and its documentation for any purpose, provided  #
8 # that existing copyright notices are retained in all copies and that this   #
9 # notice is included verbatim in any distributions. No written agreement,    #
10 # license, or royalty fee is required for any of the authorized uses.        #
11 # Modifications to this software may be copyrighted by their authors         #
12 # and need not follow the licensing terms described here, provided that      #
13 # the new terms are clearly indicated on the first page of each file where   #
14 # they apply.                                                                #
15 #                                                                            #
16 # C library -- setjmp, longjmp                                               #
17 # longjmp(a,v)                                                               #
18 # will generate a "return(v)"                                                #
19 # from the last call to                                                      #
20 # setjmp(a)                                                                  #
21 # by restoring r7-ra, sp,                                                    #
22 # and pc from 'a'                                                            #
23 # and doing a return. (Makes sure that longjmp never returns 0).             #
24 ##############################################################################
25
26	.text
27	.file	"setjmp.s"
28        .align 4
29
30        .globl _setjmp
31        .align 4
32_setjmp:
33        #r2: .blkw
34        storm r2,{r7,r8,r9,r10,r11,r12,r13,r14}
35	stord sp,0(r2)
36        movd  $0,r0
37        jump  ra
38
39        .globl _longjmp
40_longjmp:
41        #r2: .blkw # pointer save area
42        #r3: .blkw # ret vlaue
43        loadm r2, {r7,r8,r9,r10,r11,r12,r13,ra}
44        loadd 0(r2), sp
45        movd r3, r0
46        cmpd $0, r3
47        bne end1
48        movd $1, r0
49end1:
50        jump ra
51        .align 4
52