1/* c-isr library stuff of Andes NDS32 cpu for GNU compiler
2   Copyright (C) 2012-2015 Free Software Foundation, Inc.
3   Contributed by Andes Technology Corporation.
4
5   This file is part of GCC.
6
7   GCC is free software; you can redistribute it and/or modify it
8   under the terms of the GNU General Public License as published
9   by the Free Software Foundation; either version 3, or (at your
10   option) any later version.
11
12   GCC is distributed in the hope that it will be useful, but WITHOUT
13   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
15   License for more details.
16
17   Under Section 7 of GPL version 3, you are granted additional
18   permissions described in the GCC Runtime Library Exception, version
19   3.1, as published by the Free Software Foundation.
20
21   You should have received a copy of the GNU General Public License and
22   a copy of the GCC Runtime Library Exception along with this program;
23   see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
24   <http://www.gnu.org/licenses/>.  */
25
26.macro SAVE_ALL_4B
27#ifdef __NDS32_REDUCED_REGS__
28	smw.adm $r15, [$sp], $r15, #0xf
29	smw.adm $r0, [$sp], $r10, #0x0
30#else /* not __NDS32_REDUCED_REGS__ */
31	smw.adm $r0, [$sp], $r27, #0xf
32#endif /* not __NDS32_REDUCED_REGS__ */
33#ifdef NDS32_EXT_IFC
34	mfusr   $r1, $IFC_LP
35	smw.adm $r1, [$sp], $r2, #0x0	/* Save extra $r2 to keep
36					   stack 8-byte alignment.  */
37#endif
38	SAVE_MAC_REGS
39	SAVE_FPU_REGS
40	mfsr	$r1, $IPC	/* Get IPC.  */
41	mfsr	$r2, $IPSW	/* Get IPSW.  */
42	smw.adm	$r1, [$sp], $r2, #0x0	/* Push IPC, IPSW.  */
43	move	$r1, $sp	/* $r1 is ptr to NDS32_CONTEXT.  */
44	mfsr	$r0, $ITYPE	/* Get VID to $r0.  */
45	srli	$r0, $r0, #5
46#ifdef __NDS32_ISA_V2__
47	andi	$r0, $r0, #127
48#else
49	fexti33	$r0, #6
50#endif
51.endm
52
53.macro SAVE_ALL
54/* SAVE_REG_TBL code has been moved to
55   vector table generated by compiler.  */
56#ifdef NDS32_EXT_IFC
57	mfusr   $r1, $IFC_LP
58	smw.adm $r1, [$sp], $r2, #0x0	/* Save extra $r2 to keep
59					   stack 8-byte alignment.  */
60#endif
61	SAVE_MAC_REGS
62	SAVE_FPU_REGS
63	mfsr	$r1, $IPC	/* Get IPC.  */
64	mfsr	$r2, $IPSW	/* Get IPSW.  */
65	smw.adm	$r1, [$sp], $r2, #0x0	/* Push IPC, IPSW.  */
66	move	$r1, $sp	/* $r1 is ptr to NDS32_CONTEXT.  */
67.endm
68