diff options
Diffstat (limited to 'arch/avr32/lib/memcpy.S')
| -rw-r--r-- | arch/avr32/lib/memcpy.S | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/arch/avr32/lib/memcpy.S b/arch/avr32/lib/memcpy.S deleted file mode 100644 index c2ca49d705af..000000000000 --- a/arch/avr32/lib/memcpy.S +++ /dev/null @@ -1,72 +0,0 @@ -/* - * Copyright (C) 2004-2006 Atmel Corporation - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - - /* - * void *memcpy(void *to, const void *from, unsigned long n) - * - * This implementation does word-aligned loads in the main loop, - * possibly sacrificing alignment of stores. - * - * Hopefully, in most cases, both "to" and "from" will be - * word-aligned to begin with. - */ - .text - .global memcpy - .type memcpy, @function -memcpy: - mov r9, r11 - andl r9, 3, COH - brne 1f - - /* At this point, "from" is word-aligned */ -2: mov r9, r12 -5: sub r10, 4 - brlt 4f - -3: ld.w r8, r11++ - sub r10, 4 - st.w r12++, r8 - brge 3b - -4: neg r10 - reteq r9 - - /* Handle unaligned count */ - lsl r10, 2 - add pc, pc, r10 - ld.ub r8, r11++ - st.b r12++, r8 - ld.ub r8, r11++ - st.b r12++, r8 - ld.ub r8, r11++ - st.b r12++, r8 - retal r9 - - /* Handle unaligned "from" pointer */ -1: sub r10, 4 - movlt r9, r12 - brlt 4b - add r10, r9 - lsl r9, 2 - add pc, pc, r9 - ld.ub r8, r11++ - st.b r12++, r8 - ld.ub r8, r11++ - st.b r12++, r8 - ld.ub r8, r11++ - st.b r12++, r8 - mov r8, r12 - add pc, pc, r9 - sub r8, 1 - nop - sub r8, 1 - nop - sub r8, 1 - nop - mov r9, r8 - rjmp 5b |