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optimize i386 ___tls_get_addr asm
author
Rich Felker
<dalias@aerifal.cx>
Thu, 19 Jun 2014 06:48:45 +0000
(
02:48
-0400)
committer
Rich Felker
<dalias@aerifal.cx>
Thu, 19 Jun 2014 06:48:45 +0000
(
02:48
-0400)
src/thread/i386/tls.s
patch
|
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diff --git
a/src/thread/i386/tls.s
b/src/thread/i386/tls.s
index
e1f2262
..
6e01adf
100644
(file)
--- a/
src/thread/i386/tls.s
+++ b/
src/thread/i386/tls.s
@@
-2,7
+2,14
@@
.global ___tls_get_addr
.type ___tls_get_addr,@function
___tls_get_addr:
- push %eax
+ mov %gs:4,%edx
+ mov (%eax),%ecx
+ cmp %ecx,(%edx)
+ jc 1f
+ mov 4(%eax),%eax
+ add (%edx,%ecx,4),%eax
+ ret
+1: push %eax
call __tls_get_addr
pop %edx
ret