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authorChris Wilson <chris@chris-wilson.co.uk>2011-01-23 17:22:16 +0000
committerChris Wilson <chris@chris-wilson.co.uk>2011-01-24 18:27:32 +0000
commit8a327f23e23fa509e6e3c2263ae1cc0a67dec387 (patch)
tree119abf09e1ec9babaf78e6889187f9d54864b118 /arch/mips/include/asm/jump_label.h
parent5a9a8d1a99c617df82339456fbdd30d6ed3a856b (diff)
parentd315777b32a4696feb86f2a0c9e9f39c94683649 (diff)
Merge remote branch 'linus/master' into drm-intel-fixes
Merge with Linus to resolve conflicting fixes for the reusing the stale HEAD value during intel_ring_wait(). Conflicts: drivers/gpu/drm/i915/intel_ringbuffer.c
Diffstat (limited to 'arch/mips/include/asm/jump_label.h')
-rw-r--r--arch/mips/include/asm/jump_label.h48
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/mips/include/asm/jump_label.h b/arch/mips/include/asm/jump_label.h
new file mode 100644
index 000000000000..7622ccf75076
--- /dev/null
+++ b/arch/mips/include/asm/jump_label.h
@@ -0,0 +1,48 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (c) 2010 Cavium Networks, Inc.
+ */
+#ifndef _ASM_MIPS_JUMP_LABEL_H
+#define _ASM_MIPS_JUMP_LABEL_H
+
+#include <linux/types.h>
+
+#ifdef __KERNEL__
+
+#define JUMP_LABEL_NOP_SIZE 4
+
+#ifdef CONFIG_64BIT
+#define WORD_INSN ".dword"
+#else
+#define WORD_INSN ".word"
+#endif
+
+#define JUMP_LABEL(key, label) \
+ do { \
+ asm goto("1:\tnop\n\t" \
+ "nop\n\t" \
+ ".pushsection __jump_table, \"a\"\n\t" \
+ WORD_INSN " 1b, %l[" #label "], %0\n\t" \
+ ".popsection\n\t" \
+ : : "i" (key) : : label); \
+ } while (0)
+
+
+#endif /* __KERNEL__ */
+
+#ifdef CONFIG_64BIT
+typedef u64 jump_label_t;
+#else
+typedef u32 jump_label_t;
+#endif
+
+struct jump_entry {
+ jump_label_t code;
+ jump_label_t target;
+ jump_label_t key;
+};
+
+#endif /* _ASM_MIPS_JUMP_LABEL_H */