From: Yoshinori Sato <ysato@users.sourceforge.jp>
Date: Fri, 1 Jan 2016 11:43:28 +0000 (+0900)
Subject: rx: add v2 exception handler
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=2a53f2c76feb169ab6ca469684765311c8552b19;p=uclinux-h8%2Flinux.git

rx: add v2 exception handler

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---

diff --git a/arch/rx/kernel/rx_exception.S b/arch/rx/kernel/rx_exception.S
new file mode 100644
index 000000000000..8e7201fa4072
--- /dev/null
+++ b/arch/rx/kernel/rx_exception.S
@@ -0,0 +1,52 @@
+/*
+ * arch/rx/board/tkdn-rx62n/exception.S
+ *  Copyright (C) 2011 Yoshinori Sato
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <asm/ptrace.h>
+	
+	.global	install_exception_entry
+	.section	".rx.exception","ax"
+	.rept	32
+1:	
+	bsr.a	2f
+	.endr
+2:	
+	sub	#4,r0
+	pushm	r1-r15
+	mov.l	r0,r13
+	add	#-(19*4),r13
+	mov.l	r13,[-r0]
+	mvfc	usp,r13
+	mov.l	r13,OFF_USP[r0]
+	mov.l	OFF_VEC[r0],r13
+	mov.l	#exception_top,r14
+	sub	[r14],r13
+	shlr	#2,r13
+	sub	#1,r13
+	/* r13 is exception no */
+	mov	#rx_exception_handler,r1
+	jmp	r1
+
+
+	.text
+install_exception_entry:
+	mov.l	#0xfffffff8,r1	/* NMI entry */
+	mov.l	[r1],r1
+	sub	#31*4,r1
+	mov.l	#exception_top,r2
+	mov.l	r1,[r2]
+	mov.l	#ram_exception_handler,r2
+	mov.l	#sizeof_ram_exception_handler,r3
+	smovf
+	rts
+
+	.bss
+exception_top:
+	.space	4
+
+	.end
diff --git a/arch/rx/kernel/rxv2_exception.S b/arch/rx/kernel/rxv2_exception.S
new file mode 100644
index 000000000000..5eaa10101b53
--- /dev/null
+++ b/arch/rx/kernel/rxv2_exception.S
@@ -0,0 +1,41 @@
+/*
+ * arch/rx/board/tkdn-rx62n/exception.S
+ *  Copyright (C) 2011 Yoshinori Sato
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <asm/ptrace.h>
+	
+	.global	install_exception_entry
+	.section	".rx.exception","ax"
+	.rept	32
+1:	
+	bsr.a	2f
+	.endr
+2:	
+	sub	#4,r0
+	pushm	r1-r15
+	mov.l	r0,r13
+	add	#-(19*4),r13
+	mov.l	r13,[-r0]
+	mvfc	usp,r13
+	mov.l	r13,OFF_USP[r0]
+	mov.l	OFF_VEC[r0],r13
+	mov.l	#1b,r14
+	sub	[r14],r13
+	shlr	#2,r13
+	sub	#1,r13
+	/* r13 is exception no */
+	mov	#rx_exception_handler,r1
+	jmp	r1
+
+
+	.text
+install_exception_entry:
+	mvtc	#ram_exception_handler,extb
+	rts
+
+	.end