---

yaml --- r: 101723 b: refs/heads/master c: fac23fe h: refs/heads/master i: 101721: 9aa7b85 101719: bae5839 v: v3
git-mirror · Jul 1, 2008 · 92f025a · 92f025a
1 parent cf7c258
commit 92f025a
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Showing 8 changed files with 65 additions and 17 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c1137c37a9370f510dc022e6e95fff036ccb90be
+refs/heads/master: fac23fe4be23259a8eaa9bad822f5b14dd07d15c
diff --git a/trunk/arch/powerpc/kernel/vdso32/vdso32.lds.S b/trunk/arch/powerpc/kernel/vdso32/vdso32.lds.S
@@ -24,7 +24,7 @@ SECTIONS
 
 	. = ALIGN(16);
 	.text		: {
-		*(.text .stub .text.* .gnu.linkonce.t.*)
+		*(.text .stub .text.* .gnu.linkonce.t.* __ftr_alt_*)
 	}
 	PROVIDE(__etext = .);
 	PROVIDE(_etext = .);

diff --git a/trunk/arch/powerpc/kernel/vdso64/vdso64.lds.S b/trunk/arch/powerpc/kernel/vdso64/vdso64.lds.S
@@ -24,7 +24,7 @@ SECTIONS
 
 	. = ALIGN(16);
 	.text		: {
-		*(.text .stub .text.* .gnu.linkonce.t.*)
+		*(.text .stub .text.* .gnu.linkonce.t.* __ftr_alt_*)
 		*(.sfpr .glink)
 	}						:text
 	PROVIDE(__etext = .);

diff --git a/trunk/arch/powerpc/kernel/vmlinux.lds.S b/trunk/arch/powerpc/kernel/vmlinux.lds.S
@@ -35,7 +35,7 @@ SECTIONS
 		ALIGN_FUNCTION();
 		*(.text.head)
 		_text = .;
-		*(.text .fixup .text.init.refok .exit.text.refok)
+		*(.text .fixup .text.init.refok .exit.text.refok __ftr_alt_*)
 		SCHED_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT

diff --git a/trunk/arch/powerpc/lib/feature-fixups.c b/trunk/arch/powerpc/lib/feature-fixups.c
@@ -22,6 +22,8 @@ struct fixup_entry {
 	unsigned long	value;
 	long		start_off;
 	long		end_off;
+	long		alt_start_off;
+	long		alt_end_off;
 };
 
 static void patch_feature_section(unsigned long value, struct fixup_entry *fcur)

diff --git a/trunk/include/asm-powerpc/feature-fixups.h b/trunk/include/asm-powerpc/feature-fixups.h
@@ -29,24 +29,35 @@
 #define FTR_ENTRY_OFFSET	PPC_LONG
 #endif
 
+#define START_FTR_SECTION(label)	label##1:
+
+#define FTR_SECTION_ELSE_NESTED(label)			\
+label##2:						\
+	.pushsection __ftr_alt_##label,"a";		\
+	.align 2;					\
+label##3:
+
 #define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect)	\
-99:							\
-	.section sect,"a";				\
+label##4:						\
+	.popsection;					\
+	.pushsection sect,"a";				\
 	.align 3;					\
-98:						       	\
+label##5:					       	\
 	FTR_ENTRY_LONG msk;				\
 	FTR_ENTRY_LONG val;				\
-	FTR_ENTRY_OFFSET label##b-98b;			\
-	FTR_ENTRY_OFFSET 99b-98b;		 	\
-	.previous
-
+	FTR_ENTRY_OFFSET label##1b-label##5b;		\
+	FTR_ENTRY_OFFSET label##2b-label##5b;	 	\
+	FTR_ENTRY_OFFSET label##3b-label##5b;		\
+	FTR_ENTRY_OFFSET label##4b-label##5b;	 	\
+	.popsection;
 
 
 /* CPU feature dependent sections */
-#define BEGIN_FTR_SECTION_NESTED(label)	label:
-#define BEGIN_FTR_SECTION		BEGIN_FTR_SECTION_NESTED(97)
+#define BEGIN_FTR_SECTION_NESTED(label)	START_FTR_SECTION(label)
+#define BEGIN_FTR_SECTION		START_FTR_SECTION(97)
 
-#define END_FTR_SECTION_NESTED(msk, val, label) \
+#define END_FTR_SECTION_NESTED(msk, val, label) 		\
+	FTR_SECTION_ELSE_NESTED(label)				\
 	MAKE_FTR_SECTION_ENTRY(msk, val, label, __ftr_fixup)
 
 #define END_FTR_SECTION(msk, val)		\
@@ -55,12 +66,27 @@
 #define END_FTR_SECTION_IFSET(msk)	END_FTR_SECTION((msk), (msk))
 #define END_FTR_SECTION_IFCLR(msk)	END_FTR_SECTION((msk), 0)
 
+/* CPU feature sections with alternatives, use BEGIN_FTR_SECTION to start */
+#define FTR_SECTION_ELSE	FTR_SECTION_ELSE_NESTED(97)
+#define ALT_FTR_SECTION_END_NESTED(msk, val, label)	\
+	MAKE_FTR_SECTION_ENTRY(msk, val, label, __ftr_fixup)
+#define ALT_FTR_SECTION_END_NESTED_IFSET(msk, label)	\
+	ALT_FTR_SECTION_END_NESTED(msk, msk, label)
+#define ALT_FTR_SECTION_END_NESTED_IFCLR(msk, label)	\
+	ALT_FTR_SECTION_END_NESTED(msk, 0, label)
+#define ALT_FTR_SECTION_END(msk, val)	\
+	ALT_FTR_SECTION_END_NESTED(msk, val, 97)
+#define ALT_FTR_SECTION_END_IFSET(msk)	\
+	ALT_FTR_SECTION_END_NESTED_IFSET(msk, 97)
+#define ALT_FTR_SECTION_END_IFCLR(msk)	\
+	ALT_FTR_SECTION_END_NESTED_IFCLR(msk, 97)
 
 /* Firmware feature dependent sections */
-#define BEGIN_FW_FTR_SECTION_NESTED(label)	label:
-#define BEGIN_FW_FTR_SECTION			BEGIN_FW_FTR_SECTION_NESTED(97)
+#define BEGIN_FW_FTR_SECTION_NESTED(label)	START_FTR_SECTION(label)
+#define BEGIN_FW_FTR_SECTION			START_FTR_SECTION(97)
 
-#define END_FW_FTR_SECTION_NESTED(msk, val, label) \
+#define END_FW_FTR_SECTION_NESTED(msk, val, label) 		\
+	FTR_SECTION_ELSE_NESTED(label)				\
 	MAKE_FTR_SECTION_ENTRY(msk, val, label, __fw_ftr_fixup)
 
 #define END_FW_FTR_SECTION(msk, val)		\
@@ -69,6 +95,22 @@
 #define END_FW_FTR_SECTION_IFSET(msk)	END_FW_FTR_SECTION((msk), (msk))
 #define END_FW_FTR_SECTION_IFCLR(msk)	END_FW_FTR_SECTION((msk), 0)
 
+/* Firmware feature sections with alternatives */
+#define FW_FTR_SECTION_ELSE_NESTED(label)	FTR_SECTION_ELSE_NESTED(label)
+#define FW_FTR_SECTION_ELSE	FTR_SECTION_ELSE_NESTED(97)
+#define ALT_FW_FTR_SECTION_END_NESTED(msk, val, label)	\
+	MAKE_FTR_SECTION_ENTRY(msk, val, label, __fw_ftr_fixup)
+#define ALT_FW_FTR_SECTION_END_NESTED_IFSET(msk, label)	\
+	ALT_FW_FTR_SECTION_END_NESTED(msk, msk, label)
+#define ALT_FW_FTR_SECTION_END_NESTED_IFCLR(msk, label)	\
+	ALT_FW_FTR_SECTION_END_NESTED(msk, 0, label)
+#define ALT_FW_FTR_SECTION_END(msk, val)	\
+	ALT_FW_FTR_SECTION_END_NESTED(msk, val, 97)
+#define ALT_FW_FTR_SECTION_END_IFSET(msk)	\
+	ALT_FW_FTR_SECTION_END_NESTED_IFSET(msk, 97)
+#define ALT_FW_FTR_SECTION_END_IFCLR(msk)	\
+	ALT_FW_FTR_SECTION_END_NESTED_IFCLR(msk, 97)
+
 #endif /* __ASSEMBLY__ */
 
 #endif /* __ASM_POWERPC_FEATURE_FIXUPS_H */
diff --git a/trunk/include/asm-powerpc/reg.h b/trunk/include/asm-powerpc/reg.h
@@ -732,6 +732,8 @@
 				"	.llong %1\n"			\
 				"	.llong 97b-98b\n"		\
 				"	.llong 99b-98b\n"		\
+				"	.llong 0\n"			\
+				"	.llong 0\n"			\
 				".previous"				\
 			: "=r" (rval) : "i" (CPU_FTR_CELL_TB_BUG)); rval;})
 #else

diff --git a/trunk/include/asm-powerpc/timex.h b/trunk/include/asm-powerpc/timex.h
@@ -38,6 +38,8 @@ static inline cycles_t get_cycles(void)
 		"	.long 0\n"
 		"	.long 97b-98b\n"
 		"	.long 99b-98b\n"
+		"	.long 0\n"
+		"	.long 0\n"
 		".previous"
 		: "=r" (ret) : "i" (CPU_FTR_601));
 	return ret;