1 ;
2 ; Port of uClibc for TMS320C6000 DSP architecture
3 ; Copyright (C) 2004 Texas Instruments Incorporated
4 ; Author of TMS320C6000 port: Aurelien Jacquiot
5 ;
6 ; This program is free software; you can redistribute it and/or modify it
7 ; under the terms of the GNU Library General Public License as published by
8 ; the Free Software Foundation; either version 2 of the License, or (at your
9 ; option) any later version.
10 ;
11 ; This program is distributed in the hope that it will be useful, but WITHOUT
12 ; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 ; FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
14 ; for more details.
15 ;
16 ; You should have received a copy of the GNU Library General Public License
17 ; along with this program; if not, see <http://www.gnu.org/licenses/>.
18 ;
19
20	.global setjmp
21setjmp:
22#if 0
23.if 1 /* was: .if (CONFIG_UCLIBC_SHARED == 0) */
24
25	MVKL .S1	___curr_eh_stack_entry,A6
26||	SUB .D1X	A4,B15,A3
27	MVKH .S1	___curr_eh_stack_entry,A6
28||	CMPGT .L1	A3,4,A0		; A0 set if C++ exceptions case
29
30	LDW .D1T1	*A6,A2
31.else
32	MVKL .S2	(___curr_eh_stack_entry - $bss)/4,B6
33||	SUB .D1X	A4,B15,A3
34	MVKH .S2	(___curr_eh_stack_entry - $bss)/4,B6
35||	CMPGT .L1	A3,4,A0		; A0 set if C++ exceptions case
36
37	LDW .D2T1	*+B14[B6],A2
38.endif
39	NOP
40#else
41	MVK .S1		0, A0
42#endif
43
44	MVK .L2	1,B4		; indicate to ___sigjmp_save to save signal mask
45||	MV .D2X	A4,B6		; jmp_buf address
46||	STW .D1T2	B3,*+A4(48)	; return address
47
48	ADDAW .D1	A2,2,A2
49 [A0]	CMPEQ .L1	A4,A2,A0	; A0 set if C++ exceptions case
50
51	STW .D1T1	A10,*+A4(0)
52||	STW .D2T2	B10,*+B6(4)
53||[!A0]	B .S1		__sigjmp_save		; branch to ___sigjmp_save in 5 cycles
54||[A0]	B .S2		B3
55
56	STW .D1T1	A11,*+A4(8)
57||	STW .D2T2	B11,*+B6(12)
58	STW .D1T1	A12,*+A4(16)
59||	STW .D2T2	B12,*+B6(20)
60	STW .D1T1	A13,*+A4(24)
61||	STW .D2T2	B13,*+B6(28)
62	STW .D1T1	A14,*+A4(32)
63||	STW .D2T2	B14,*+B6(36)
64	STW .D1T1	A15,*+A4(40)
65||	STW .D2T2	B15,*+B6(44)
66||[A0]	ZERO .L1	A4		; returns 0 for the C++ case
67