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authorYoshinori Sato <ysato@users.sourceforge.jp>2006-12-12 09:11:45 +0900
committerPaul Mundt <lethal@linux-sh.org>2006-12-12 09:11:45 +0900
commite9cfc147df99790a7d260e9d20b865fa31ec56da (patch)
tree97a7428d70e2c6afe81a084a929ac15999e8ed13 /arch/sh
parentb641fe016a29fe2c0c7b0d717a5918e3f067a44f (diff)
sh: Fixup SH-2 BUG() trap handling.
This adds in support for the BUG() trap on SH-2. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh')
-rw-r--r--arch/sh/kernel/cpu/sh2/entry.S32
1 files changed, 14 insertions, 18 deletions
diff --git a/arch/sh/kernel/cpu/sh2/entry.S b/arch/sh/kernel/cpu/sh2/entry.S
index 34d51b3745e..d51fa5e9904 100644
--- a/arch/sh/kernel/cpu/sh2/entry.S
+++ b/arch/sh/kernel/cpu/sh2/entry.S
@@ -177,15 +177,21 @@ interrupt_entry:
7: .long do_IRQ
8: .long do_exception_error
-trap_entry:
- add #-0x10,r9
+trap_entry:
+ /* verbose BUG trapa entry check */
+ mov #0x3e,r8
+ cmp/ge r8,r9
+ bf/s 1f
+ add #-0x10,r9
+ add #0x10,r9
+1:
shll2 r9 ! TRA
mov #OFF_TRA,r8
add r15,r8
mov.l r9,@r8
mov r9,r8
#ifdef CONFIG_TRACE_IRQFLAGS
- mov.l 5f, r9
+ mov.l 2f, r9
jsr @r9
nop
#endif
@@ -194,12 +200,8 @@ trap_entry:
nop
.align 2
-1: .long syscall_exit
-2: .long break_point_trap_software
-3: .long NR_syscalls
-4: .long sys_call_table
#ifdef CONFIG_TRACE_IRQFLAGS
-5: .long trace_hardirqs_on
+2: .long trace_hardirqs_on
#endif
#if defined(CONFIG_SH_STANDARD_BIOS)
@@ -264,7 +266,7 @@ ENTRY(address_error_handler)
restore_all:
cli
#ifdef CONFIG_TRACE_IRQFLAGS
- mov.l 3f, r0
+ mov.l 1f, r0
jsr @r0
nop
#endif
@@ -309,20 +311,14 @@ restore_all:
mov.l @r15,r15
rte
nop
-2:
- mov.l 1f,r8
- mov.l 2f,r9
- jmp @r9
- lds r8,pr
- .align 2
+#ifdef CONFIG_TRACE_IRQFLAGS
+1: .long trace_hardirqs_off
+#endif
$current_thread_info:
.long __current_thread_info
$cpu_mode:
.long __cpu_mode
-#ifdef CONFIG_TRACE_IRQFLAGS
-3: .long trace_hardirqs_off
-#endif
! common exception handler
#include "../../entry-common.S"