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-rw-r--r--arch/ia64/lib/memcpy_mck.S9
1 files changed, 6 insertions, 3 deletions
diff --git a/arch/ia64/lib/memcpy_mck.S b/arch/ia64/lib/memcpy_mck.S
index 46c9331e7ab5..9e534d52b1d5 100644
--- a/arch/ia64/lib/memcpy_mck.S
+++ b/arch/ia64/lib/memcpy_mck.S
@@ -6,7 +6,9 @@
6 * in1: source address 6 * in1: source address
7 * in2: number of bytes to copy 7 * in2: number of bytes to copy
8 * Output: 8 * Output:
9 * 0 if success, or number of byte NOT copied if error occurred. 9 * for memcpy: return dest
10 * for copy_user: return 0 if success,
11 * or number of byte NOT copied if error occurred.
10 * 12 *
11 * Copyright (C) 2002 Intel Corp. 13 * Copyright (C) 2002 Intel Corp.
12 * Copyright (C) 2002 Ken Chen <kenneth.w.chen@intel.com> 14 * Copyright (C) 2002 Ken Chen <kenneth.w.chen@intel.com>
@@ -73,6 +75,7 @@ GLOBAL_ENTRY(memcpy)
73 and r28=0x7,in0 75 and r28=0x7,in0
74 and r29=0x7,in1 76 and r29=0x7,in1
75 mov f6=f0 77 mov f6=f0
78 mov retval=in0
76 br.cond.sptk .common_code 79 br.cond.sptk .common_code
77 ;; 80 ;;
78END(memcpy) 81END(memcpy)
@@ -84,7 +87,7 @@ GLOBAL_ENTRY(__copy_user)
84 mov f6=f1 87 mov f6=f1
85 mov saved_in0=in0 // save dest pointer 88 mov saved_in0=in0 // save dest pointer
86 mov saved_in1=in1 // save src pointer 89 mov saved_in1=in1 // save src pointer
87 mov saved_in2=in2 // save len 90 mov retval=r0 // initialize return value
88 ;; 91 ;;
89.common_code: 92.common_code:
90 cmp.gt p15,p0=8,in2 // check for small size 93 cmp.gt p15,p0=8,in2 // check for small size
@@ -92,7 +95,7 @@ GLOBAL_ENTRY(__copy_user)
92 cmp.ne p14,p0=0,r29 // check src alignment 95 cmp.ne p14,p0=0,r29 // check src alignment
93 add src0=0,in1 96 add src0=0,in1
94 sub r30=8,r28 // for .align_dest 97 sub r30=8,r28 // for .align_dest
95 mov retval=r0 // initialize return value 98 mov saved_in2=in2 // save len
96 ;; 99 ;;
97 add dst0=0,in0 100 add dst0=0,in0
98 add dst1=1,in0 // dest odd index 101 add dst1=1,in0 // dest odd index