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authorDavid Gibson <david@gibson.dropbear.id.au>2006-01-12 22:56:25 -0500
committerPaul Mackerras <paulus@samba.org>2006-01-13 05:16:23 -0500
commite58c3495e6007af59382540bb21ee941e470d88d (patch)
tree24b559cb768bfa5cf4bdef69f2943b081a1f5afa /arch/powerpc/kernel/misc_32.S
parent7e78e5e502d4f220d24c6f738f2fdb078ad33607 (diff)
[PATCH] powerpc: Cleanup LOADADDR etc. asm macros
This patch consolidates the variety of macros used for loading 32 or 64-bit constants in assembler (LOADADDR, LOADBASE, SET_REG_TO_*). The idea is to make the set of macros consistent across 32 and 64 bit and to make it more obvious which is the appropriate one to use in a given situation. The new macros and their semantics are described in the comments in ppc_asm.h. In the process, we change several places that were unnecessarily using immediate loads on ppc64 to use the GOT/TOC. Likewise we cleanup a couple of places where we were clumsily subtracting PAGE_OFFSET with asm instructions to use assemble-time arithmetic or the toreal() macro instead. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel/misc_32.S')
-rw-r--r--arch/powerpc/kernel/misc_32.S4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
index 01d0d97a16e1..be982023409e 100644
--- a/arch/powerpc/kernel/misc_32.S
+++ b/arch/powerpc/kernel/misc_32.S
@@ -68,7 +68,7 @@ _GLOBAL(reloc_offset)
68 mflr r0 68 mflr r0
69 bl 1f 69 bl 1f
701: mflr r3 701: mflr r3
71 LOADADDR(r4,1b) 71 LOAD_REG_IMMEDIATE(r4,1b)
72 subf r3,r4,r3 72 subf r3,r4,r3
73 mtlr r0 73 mtlr r0
74 blr 74 blr
@@ -80,7 +80,7 @@ _GLOBAL(add_reloc_offset)
80 mflr r0 80 mflr r0
81 bl 1f 81 bl 1f
821: mflr r5 821: mflr r5
83 LOADADDR(r4,1b) 83 LOAD_REG_IMMEDIATE(r4,1b)
84 subf r5,r4,r5 84 subf r5,r4,r5
85 add r3,r3,r5 85 add r3,r3,r5
86 mtlr r0 86 mtlr r0