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authorPaul Mundt <lethal@linux-sh.org>2006-12-11 20:29:28 +0900
committerPaul Mundt <lethal@linux-sh.org>2006-12-12 08:42:09 +0900
commit1dc417d0390b4897dc1d9bbf335e325baecae2c3 (patch)
treeff0a863d54b1955e19c00ec046a8afc5e5383f49
parent41504c39726a7099e5a42508dd57fe561c8b4129 (diff)
sh: Fixup sh_bios() trap handling.
This was inadvertently broken when the entry.S code split up, restore the missing branch and get subsequent traps working under debug again. This manifested itself as a lockup when attempting to reload the VBR base. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
-rw-r--r--arch/sh/kernel/entry-common.S15
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S
index 29136a35d7c..fc279aeb73a 100644
--- a/arch/sh/kernel/entry-common.S
+++ b/arch/sh/kernel/entry-common.S
@@ -79,18 +79,29 @@ debug_kernel_sw:
.align 2
3: .long kgdb_handle_exception
#endif /* CONFIG_SH_KGDB */
-
+#ifdef CONFIG_SH_STANDARD_BIOS
+ bra debug_kernel_fw
+ nop
+#endif
#endif /* CONFIG_SH_STANDARD_BIOS || CONFIG_SH_KGDB */
-
.align 2
debug_trap:
#if defined(CONFIG_SH_STANDARD_BIOS) || defined(CONFIG_SH_KGDB)
+ mov r8, r0
+ shlr2 r0
+ cmp/eq #0x3f, r0 ! sh_bios() trap
+ bf 1f
+#ifdef CONFIG_SH_KGDB
+ cmp/eq #0xff, r0 ! XXX: KGDB trap, fix for SH-2.
+ bf 1f
+#endif
mov #OFF_SR, r0
mov.l @(r0,r15), r0 ! get status register
shll r0
shll r0 ! kernel space?
bt/s debug_kernel
+1:
#endif
mov.l @r15, r0 ! Restore R0 value
mov.l 1f, r8