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authorAlexander Graf <agraf@suse.de>2012-10-31 13:36:18 +0100
committerAlexander Graf <agraf@suse.de>2012-10-31 13:36:18 +0100
commit0588000eac9ba4178cebade437da3b28e8fad48f (patch)
tree697e514a0a0193f17a54f372dd18c5cd3927e154 /arch/m68k/include/asm/processor.h
parent8b5869ad85f703ffeb25e656eab826f6b85b984c (diff)
parent81c52c56e2b43589091ee29038bcf793d3f184ab (diff)
Merge commit 'origin/queue' into for-queue
Conflicts: arch/powerpc/include/asm/Kbuild arch/powerpc/include/uapi/asm/Kbuild
Diffstat (limited to 'arch/m68k/include/asm/processor.h')
-rw-r--r--arch/m68k/include/asm/processor.h25
1 files changed, 12 insertions, 13 deletions
diff --git a/arch/m68k/include/asm/processor.h b/arch/m68k/include/asm/processor.h
index f17c42aff7f..ae700f49e51 100644
--- a/arch/m68k/include/asm/processor.h
+++ b/arch/m68k/include/asm/processor.h
@@ -100,6 +100,16 @@ struct thread_struct {
.fs = __KERNEL_DS, \
}
+/*
+ * ColdFire stack format sbould be 0x4 for an aligned usp (will always be
+ * true on thread creation). We need to set this explicitly.
+ */
+#ifdef CONFIG_COLDFIRE
+#define setframeformat(_regs) do { (_regs)->format = 0x4; } while(0)
+#else
+#define setframeformat(_regs) do { } while (0)
+#endif
+
#ifdef CONFIG_MMU
/*
* Do necessary setup to start up a newly executed thread.
@@ -109,6 +119,7 @@ static inline void start_thread(struct pt_regs * regs, unsigned long pc,
{
regs->pc = pc;
regs->sr &= ~0x2000;
+ setframeformat(regs);
wrusp(usp);
}
@@ -116,21 +127,11 @@ extern int handle_kernel_fault(struct pt_regs *regs);
#else
-/*
- * Coldfire stacks need to be re-aligned on trap exit, conventional
- * 68k can handle this case cleanly.
- */
-#ifdef CONFIG_COLDFIRE
-#define reformat(_regs) do { (_regs)->format = 0x4; } while(0)
-#else
-#define reformat(_regs) do { } while (0)
-#endif
-
#define start_thread(_regs, _pc, _usp) \
do { \
(_regs)->pc = (_pc); \
((struct switch_stack *)(_regs))[-1].a6 = 0; \
- reformat(_regs); \
+ setframeformat(_regs); \
if (current->mm) \
(_regs)->d5 = current->mm->start_data; \
(_regs)->sr &= ~0x2000; \
@@ -153,8 +154,6 @@ static inline void release_thread(struct task_struct *dead_task)
{
}
-extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
-
/*
* Free current thread data structures etc..
*/