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sparc64: Kill .fixup section bloat.

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This is an implementation of a suggestion made by Chris Torek:
--------------------
Something else I noticed in passing: the EX and EX_LD/EX_ST macros
scattered throughout the various .S files make a fair bit of .fixup
code, all of which does the same thing.  At the cost of one symbol
in copy_in_user.S, you could just have one common two-instruction
retl-and-mov-1 fixup that they all share.
--------------------

The following is with a defconfig build:

   text	   data	    bss	    dec	    hex	filename
3972767	 344024	 584449	4901240	 4ac978	vmlinux.orig
3968887	 344024	 584449	4897360	 4aba50	vmlinux

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2009-02-08 22:00:55 -08:00
parent 1c2f61d40b
commit 40bdac7dbc
15 changed files with 42 additions and 77 deletions
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6
arch/sparc/lib/GENbzero.S
View file

@ -6,13 +6,9 @@
#define EX_ST(x,y) \
98: x,y; \
.section .fixup; \
.align 4; \
99: retl; \
mov %o1, %o0; \
.section __ex_table,"a";\
.align 4; \
.word 98b, 99b; \
.word 98b, __retl_o1; \
.text; \
.align 4;