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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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5
arch/sh/kernel/head.S
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@@ -12,7 +12,6 @@
*/
#include <linux/linkage.h>
#include <asm/thread_info.h>
#include <asm/page.h>
#ifdef CONFIG_CPU_SH4A
#define SYNCO() synco
@@ -69,8 +68,8 @@ ENTRY(_stext)
!
mov.l 2f, r0
mov r0, r15 ! Set initial r15 (stack pointer)
mov #0x20, r1 !
shll8 r1 ! r1 = 8192
mov #(THREAD_SIZE >> 8), r1
shll8 r1 ! r1 = THREAD_SIZE
sub r1, r0 !
ldc r0, r7_bank ! ... and initial thread_info