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Diffstat (limited to 'arch/x86/lib/copy_user_nocache_64.S')
-rw-r--r--arch/x86/lib/copy_user_nocache_64.S25
1 files changed, 11 insertions, 14 deletions
diff --git a/arch/x86/lib/copy_user_nocache_64.S b/arch/x86/lib/copy_user_nocache_64.S
index 5196762b3b0e..9d3d1ab83763 100644
--- a/arch/x86/lib/copy_user_nocache_64.S
+++ b/arch/x86/lib/copy_user_nocache_64.S
@@ -145,19 +145,19 @@ ENTRY(__copy_user_nocache)
/* table sorted by exception address */
.section __ex_table,"a"
.align 8
- .quad .Ls1,.Ls1e
- .quad .Ls2,.Ls2e
- .quad .Ls3,.Ls3e
- .quad .Ls4,.Ls4e
- .quad .Ld1,.Ls1e
+ .quad .Ls1,.Ls1e /* .Ls[1-4] - 0 bytes copied */
+ .quad .Ls2,.Ls1e
+ .quad .Ls3,.Ls1e
+ .quad .Ls4,.Ls1e
+ .quad .Ld1,.Ls1e /* .Ld[1-4] - 0..24 bytes coped */
.quad .Ld2,.Ls2e
.quad .Ld3,.Ls3e
.quad .Ld4,.Ls4e
- .quad .Ls5,.Ls5e
- .quad .Ls6,.Ls6e
- .quad .Ls7,.Ls7e
- .quad .Ls8,.Ls8e
- .quad .Ld5,.Ls5e
+ .quad .Ls5,.Ls5e /* .Ls[5-8] - 32 bytes copied */
+ .quad .Ls6,.Ls5e
+ .quad .Ls7,.Ls5e
+ .quad .Ls8,.Ls5e
+ .quad .Ld5,.Ls5e /* .Ld[5-8] - 32..56 bytes copied */
.quad .Ld6,.Ls6e
.quad .Ld7,.Ls7e
.quad .Ld8,.Ls8e
@@ -172,11 +172,8 @@ ENTRY(__copy_user_nocache)
.quad .Le5,.Le_zero
.previous
- /* compute 64-offset for main loop. 8 bytes accuracy with error on the
- pessimistic side. this is gross. it would be better to fix the
- interface. */
/* eax: zero, ebx: 64 */
-.Ls1e: addl $8,%eax
+.Ls1e: addl $8,%eax /* eax: bytes left uncopied: Ls1e: 64 .. Ls8e: 8 */
.Ls2e: addl $8,%eax
.Ls3e: addl $8,%eax
.Ls4e: addl $8,%eax