fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / include / asm-powerpc / asm-compat.h

diff --git a/include/asm-powerpc/asm-compat.h b/include/asm-powerpc/asm-compat.h
index 8e64be0..c89bd58 100644 (file)
--- a/include/asm-powerpc/asm-compat.h
+++ b/include/asm-powerpc/asm-compat.h
@@ -14,6 +14,58 @@
 #  define ASM_CONST(x)         __ASM_CONST(x)
 #endif
 
+
+/*
+ * Feature section common macros
+ *
+ * Note that the entries now contain offsets between the table entry
+ * and the code rather than absolute code pointers in order to be
+ * useable with the vdso shared library. There is also an assumption
+ * that values will be negative, that is, the fixup table has to be
+ * located after the code it fixes up.
+ */
+#ifdef CONFIG_PPC64
+#ifdef __powerpc64__
+/* 64 bits kernel, 64 bits code */
+#define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect)  \
+99:                                                    \
+       .section sect,"a";                              \
+       .align 3;                                       \
+98:                                                    \
+       .llong msk;                                     \
+       .llong val;                                     \
+       .llong label##b-98b;                            \
+       .llong 99b-98b;                                 \
+       .previous
+#else /* __powerpc64__ */
+/* 64 bits kernel, 32 bits code (ie. vdso32) */
+#define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect)  \
+99:                                                    \
+       .section sect,"a";                              \
+       .align 3;                                       \
+98:                                                    \
+       .llong msk;                                     \
+       .llong val;                                     \
+       .long 0xffffffff;                               \
+       .long label##b-98b;                             \
+       .long 0xffffffff;                               \
+       .long 99b-98b;                                  \
+       .previous
+#endif /* !__powerpc64__ */
+#else /* CONFIG_PPC64 */
+/* 32 bits kernel, 32 bits code */
+#define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect)  \
+99:                                                    \
+       .section sect,"a";                              \
+       .align 2;                                       \
+98:                                                    \
+       .long msk;                                      \
+       .long val;                                      \
+       .long label##b-98b;                             \
+       .long 99b-98b;                                  \
+       .previous
+#endif /* !CONFIG_PPC64 */
+
 #ifdef __powerpc64__
 
 /* operations for longs and pointers */