[PATCH] powerpc: Merge bug.h

ppc32/ppc64: Merge bug.h into include/asm-powerpc

This patch merges bug.h into include/asm-powerpc.  Changed the data
structure for bug_entry such that line is always an int on both 32 and
64-bit platforms; removed casts to int from the 64-bit trap code to
reflect this.

Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Becky Bruce <Becky.Bruce@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/ppc/kernel/traps.c

@@ -575,7 +575,7 @@ extern struct bug_entry __start___bug_table[], __stop___bug_table[];
 #define module_find_bug(x)	NULL
 #endif
 
-static struct bug_entry *find_bug(unsigned long bugaddr)
+struct bug_entry *find_bug(unsigned long bugaddr)
 {
 	struct bug_entry *bug;
 

arch/ppc64/kernel/traps.c

@@ -390,12 +390,12 @@ check_bug_trap(struct pt_regs *regs)
 		/* this is a WARN_ON rather than BUG/BUG_ON */
 		printk(KERN_ERR "Badness in %s at %s:%d\n",
 		       bug->function, bug->file,
-		      (unsigned int)bug->line & ~BUG_WARNING_TRAP);
+		       bug->line & ~BUG_WARNING_TRAP);
 		show_stack(current, (void *)regs->gpr[1]);
 		return 1;
 	}
 	printk(KERN_CRIT "kernel BUG in %s at %s:%d!\n",
-	       bug->function, bug->file, (unsigned int)bug->line);
+	       bug->function, bug->file, bug->line);
 	return 0;
 }
 

include/asm-ppc64/bug.h → include/asm-powerpc/bug.h

@@ -1,5 +1,5 @@
-#ifndef _PPC64_BUG_H
-#define _PPC64_BUG_H
+#ifndef _ASM_POWERPC_BUG_H
+#define _ASM_POWERPC_BUG_H
 
 /*
  * Define an illegal instr to trap on the bug.
@@ -11,9 +11,21 @@
 
 #ifndef __ASSEMBLY__
 
+#ifdef __powerpc64__
+#define BUG_TABLE_ENTRY(label, line, file, func) \
+	".llong " #label "\n .long " #line "\n .llong " #file ", " #func "\n"
+#define TRAP_OP(ra, rb) "1: tdnei " #ra ", " #rb "\n"
+#define DATA_TYPE long long
+#else 
+#define BUG_TABLE_ENTRY(label, line, file, func) \
+	".long " #label ", " #line ", " #file ", " #func "\n"
+#define TRAP_OP(ra, rb) "1: twnei " #ra ", " #rb "\n"
+#define DATA_TYPE int
+#endif /* __powerpc64__ */
+
 struct bug_entry {
 	unsigned long	bug_addr;
-	long		line;
+	int		line;
 	const char	*file;
 	const char	*function;
 };
@@ -32,28 +44,28 @@ struct bug_entry *find_bug(unsigned long bugaddr);
 	__asm__ __volatile__(						 \
 		"1:	twi 31,0,0\n"					 \
 		".section __bug_table,\"a\"\n\t"			 \
-		"	.llong 1b,%0,%1,%2\n"				 \
+		BUG_TABLE_ENTRY(1b,%0,%1,%2)				 \
 		".previous"						 \
 		: : "i" (__LINE__), "i" (__FILE__), "i" (__FUNCTION__)); \
 } while (0)
 
 #define BUG_ON(x) do {						\
 	__asm__ __volatile__(					\
-		"1:	tdnei %0,0\n"				\
+		TRAP_OP(%0,0)					\
 		".section __bug_table,\"a\"\n\t"		\
-		"	.llong 1b,%1,%2,%3\n"			\
+		BUG_TABLE_ENTRY(1b,%1,%2,%3)			\
 		".previous"					\
-		: : "r" ((long long)(x)), "i" (__LINE__),	\
+		: : "r" ((DATA_TYPE)(x)), "i" (__LINE__),	\
 		    "i" (__FILE__), "i" (__FUNCTION__));	\
 } while (0)
 
 #define WARN_ON(x) do {						\
 	__asm__ __volatile__(					\
-		"1:	tdnei %0,0\n"				\
+		TRAP_OP(%0,0)					\
 		".section __bug_table,\"a\"\n\t"		\
-		"	.llong 1b,%1,%2,%3\n"			\
+		BUG_TABLE_ENTRY(1b,%1,%2,%3)			\
 		".previous"					\
-		: : "r" ((long long)(x)),			\
+		: : "r" ((DATA_TYPE)(x)),			\
 		    "i" (__LINE__ + BUG_WARNING_TRAP),		\
 		    "i" (__FILE__), "i" (__FUNCTION__));	\
 } while (0)
@@ -61,9 +73,9 @@ struct bug_entry *find_bug(unsigned long bugaddr);
 #define HAVE_ARCH_BUG
 #define HAVE_ARCH_BUG_ON
 #define HAVE_ARCH_WARN_ON
-#endif
-#endif
+#endif /* CONFIG_BUG */
+#endif /* __ASSEMBLY __ */
 
 #include <asm-generic/bug.h>
 
-#endif
+#endif /* _ASM_POWERPC_BUG_H */

include/asm-ppc/bug.h

@@ -1,58 +0,0 @@
-#ifndef _PPC_BUG_H
-#define _PPC_BUG_H
-
-struct bug_entry {
-	unsigned long	bug_addr;
-	int		line;
-	const char	*file;
-	const char	*function;
-};
-
-/*
- * If this bit is set in the line number it means that the trap
- * is for WARN_ON rather than BUG or BUG_ON.
- */
-#define BUG_WARNING_TRAP	0x1000000
-
-#ifdef CONFIG_BUG
-#define BUG() do {							 \
-	__asm__ __volatile__(						 \
-		"1:	twi 31,0,0\n"					 \
-		".section __bug_table,\"a\"\n\t"			 \
-		"	.long 1b,%0,%1,%2\n"				 \
-		".previous"						 \
-		: : "i" (__LINE__), "i" (__FILE__), "i" (__FUNCTION__)); \
-} while (0)
-
-#define BUG_ON(x) do {							\
-	if (!__builtin_constant_p(x) || (x)) {				\
-		__asm__ __volatile__(					\
-			"1:	twnei %0,0\n"				\
-			".section __bug_table,\"a\"\n\t"		\
-			"	.long 1b,%1,%2,%3\n"			\
-			".previous"					\
-			: : "r" (x), "i" (__LINE__), "i" (__FILE__),	\
-			    "i" (__FUNCTION__));			\
-	}								\
-} while (0)
-
-#define WARN_ON(x) do {							\
-	if (!__builtin_constant_p(x) || (x)) {				\
-		__asm__ __volatile__(					\
-			"1:	twnei %0,0\n"				\
-			".section __bug_table,\"a\"\n\t"		\
-			"	.long 1b,%1,%2,%3\n"			\
-			".previous"					\
-			: : "r" (x), "i" (__LINE__ + BUG_WARNING_TRAP),	\
-			    "i" (__FILE__), "i" (__FUNCTION__));	\
-	}								\
-} while (0)
-
-#define HAVE_ARCH_BUG
-#define HAVE_ARCH_BUG_ON
-#define HAVE_ARCH_WARN_ON
-#endif
-
-#include <asm-generic/bug.h>
-
-#endif