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authorH. J. Lu <hjl@lucon.org>2005-09-06 15:16:49 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-07 16:57:21 -0700
commit36d57ac4a818cb4aa3edbdf63ad2ebc31106f925 (patch)
tree445eda00ee5974a65e21152cd240fb604c6d112d /include/asm-alpha/auxvec.h
parent32605a18152b246df483fadc1c23854addde8755 (diff)
[PATCH] auxiliary vector cleanups
The size of auxiliary vector is fixed at 42 in linux/sched.h. But it isn't very obvious when looking at linux/elf.h. This patch adds AT_VECTOR_SIZE so that we can change it if necessary when a new vector is added. Because of include file ordering problems, doing this necessitated the extraction of the AT_* symbols into a standalone header file. Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-alpha/auxvec.h')
-rw-r--r--include/asm-alpha/auxvec.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/include/asm-alpha/auxvec.h b/include/asm-alpha/auxvec.h
new file mode 100644
index 000000000000..e96fe880e310
--- /dev/null
+++ b/include/asm-alpha/auxvec.h
@@ -0,0 +1,24 @@
+#ifndef __ASM_ALPHA_AUXVEC_H
+#define __ASM_ALPHA_AUXVEC_H
+
+/* Reserve these numbers for any future use of a VDSO. */
+#if 0
+#define AT_SYSINFO 32
+#define AT_SYSINFO_EHDR 33
+#endif
+
+/* More complete cache descriptions than AT_[DIU]CACHEBSIZE. If the
+ value is -1, then the cache doesn't exist. Otherwise:
+
+ bit 0-3: Cache set-associativity; 0 means fully associative.
+ bit 4-7: Log2 of cacheline size.
+ bit 8-31: Size of the entire cache >> 8.
+ bit 32-63: Reserved.
+*/
+
+#define AT_L1I_CACHESHAPE 34
+#define AT_L1D_CACHESHAPE 35
+#define AT_L2_CACHESHAPE 36
+#define AT_L3_CACHESHAPE 37
+
+#endif /* __ASM_ALPHA_AUXVEC_H */