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sh: Add support for 4K stacks.

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This enables support for 4K stacks on SH.

Currently this depends on DEBUG_KERNEL, but likely all boards
will switch to this as the default in the future.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Paul Mundt
2006-09-27 18:22:14 +09:00
parent 2cb7ce3bb3
commit a6a3113989
9 changed files with 190 additions and 24 deletions
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4
arch/sh/kernel/entry.S
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@@ -716,8 +716,8 @@ ENTRY(handle_exception)
bt/s 1f ! It's a kernel to kernel transition.
mov r15, k0 ! save original stack to k0
/* User space to kernel */
mov #0x20, k1
shll8 k1 ! k1 := 8192 (== THREAD_SIZE)
mov #(THREAD_SIZE >> 8), k1
shll8 k1 ! k1 := THREAD_SIZE
add current, k1
mov k1, r15 ! change to kernel stack
!