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authorPaul Mundt <lethal@linux-sh.org>2006-12-13 03:40:05 -0500
committerPaul Mundt <lethal@linux-sh.org>2007-02-12 20:54:43 -0500
commitf413d0d9fa7abcecc40e115cf4aead372d164a75 (patch)
tree72146d33f19d338076c55b7597dc15ce3f357f2c /arch/sh/kernel/cpu/sh2
parentec2f9d1331f658433411c58077871e1eef4ee1b4 (diff)
sh: Use a jump call table for debug trap handlers.
This rips out most of the needlessly complicated sh_bios and kgdb trap handling, and forces it all through a common fast dispatch path. As more debug traps are inserted, it's important to keep them in sync for all of the parts, not just SH-3/4. As the SH-2 parts are unable to do traps in the >= 0x40 range, we restrict the debug traps to the 0x30-0x3f range on all parts, and also bump the kgdb breakpoint trap down in to this range (from 0xff to 0x3c) so it's possible to use for nommu. Optionally, this table can be padded out to catch spurious traps for SH-3/4, but we don't do that yet.. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/cpu/sh2')
-rw-r--r--arch/sh/kernel/cpu/sh2/entry.S2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sh/kernel/cpu/sh2/entry.S b/arch/sh/kernel/cpu/sh2/entry.S
index d51fa5e9904a..8de48102ac85 100644
--- a/arch/sh/kernel/cpu/sh2/entry.S
+++ b/arch/sh/kernel/cpu/sh2/entry.S
@@ -206,7 +206,7 @@ trap_entry:
206 206
207#if defined(CONFIG_SH_STANDARD_BIOS) 207#if defined(CONFIG_SH_STANDARD_BIOS)
208 /* Unwind the stack and jmp to the debug entry */ 208 /* Unwind the stack and jmp to the debug entry */
209debug_kernel_fw: 209ENTRY(sh_bios_handler)
210 mov r15,r0 210 mov r15,r0
211 add #(22-4)*4-4,r0 211 add #(22-4)*4-4,r0
212 ldc.l @r0+,gbr 212 ldc.l @r0+,gbr