X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=blobdiff_plain;f=include%2Fasm-m68knommu%2Fprocessor.h;h=91cba18acdd32a5f14c220aee136649e88262947;hp=278b00bc60c5131ff89171fb906d00dfccddda59;hb=708e16892e1646594a29eaa7ac7b209b600b9fd2;hpb=37224470c8c6d90a4062e76a08d4dc1fcf91fc89

diff --git a/include/asm-m68knommu/processor.h b/include/asm-m68knommu/processor.h
index 278b00bc60c5..91cba18acdd3 100644
--- a/include/asm-m68knommu/processor.h
+++ b/include/asm-m68knommu/processor.h
@@ -1,5 +1,5 @@
 /*
- * include/asm-m68k/processor.h
+ * include/asm-m68knommu/processor.h
  *
  * Copyright (C) 1995 Hamish Macdonald
  */
@@ -13,6 +13,7 @@
  */
 #define current_text_addr() ({ __label__ _l; _l: &&_l;})
 
+#include <linux/compiler.h>
 #include <linux/threads.h>
 #include <asm/types.h>
 #include <asm/segment.h>
@@ -77,20 +78,32 @@ struct thread_struct {
 	{0, 0}, 0, {0,}, {0, 0, 0}, {0,}, \
 }
 
+/*
+ * Coldfire stacks need to be re-aligned on trap exit, conventional
+ * 68k can handle this case cleanly.
+ */
+#if defined(CONFIG_COLDFIRE)
+#define	reformat(_regs)		do { (_regs)->format = 0x4; } while(0)
+#else
+#define	reformat(_regs)		do { } while (0)
+#endif
+
 /*
  * Do necessary setup to start up a newly executed thread.
  *
  * pass the data segment into user programs if it exists,
  * it can't hurt anything as far as I can tell
  */
-#define start_thread(_regs, _pc, _usp)           \
-do {                                             \
-	set_fs(USER_DS); /* reads from user space */ \
-	(_regs)->pc = (_pc);                         \
-	if (current->mm)                             \
-		(_regs)->d5 = current->mm->start_data;   \
-	(_regs)->sr &= ~0x2000;                      \
-	wrusp(_usp);                                 \
+#define start_thread(_regs, _pc, _usp)			\
+do {							\
+	set_fs(USER_DS); /* reads from user space */	\
+	(_regs)->pc = (_pc);				\
+	((struct switch_stack *)(_regs))[-1].a6 = 0;	\
+	reformat(_regs);				\
+	if (current->mm)				\
+		(_regs)->d5 = current->mm->start_data;	\
+	(_regs)->sr &= ~0x2000;				\
+	wrusp(_usp);					\
 } while(0)
 
 /* Forward declaration, a strange C thing */
@@ -125,6 +138,6 @@ unsigned long get_wchan(struct task_struct *p);
 	eip; })
 #define	KSTK_ESP(tsk)	((tsk) == current ? rdusp() : (tsk)->thread.usp)
 
-#define cpu_relax()    do { } while (0)
+#define cpu_relax()    barrier()
 
 #endif