diff options
Diffstat (limited to 'arch/blackfin/lib/memset.S')
-rw-r--r-- | arch/blackfin/lib/memset.S | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/arch/blackfin/lib/memset.S b/arch/blackfin/lib/memset.S deleted file mode 100644 index 21cbabd582..0000000000 --- a/arch/blackfin/lib/memset.S +++ /dev/null @@ -1,83 +0,0 @@ -/* - * File: memset.S - * - * Copyright 2004-2007 Analog Devices Inc. - * Enter bugs at http://blackfin.uclinux.org/ - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -.align 2 - -/* - * C Library function MEMSET - * R0 = address (leave unchanged to form result) - * R1 = filler byte - * R2 = count - * Favours word aligned data. - */ - -.globl _memset; -.type _memset, STT_FUNC; -_memset: - P0 = R0 ; /* P0 = address */ - P2 = R2 ; /* P2 = count */ - R3 = R0 + R2; /* end */ - CC = R2 <= 7(IU); - IF CC JUMP .Ltoo_small; - R1 = R1.B (Z); /* R1 = fill char */ - R2 = 3; - R2 = R0 & R2; /* addr bottom two bits */ - CC = R2 == 0; /* AZ set if zero. */ - IF !CC JUMP .Lforce_align ; /* Jump if addr not aligned. */ - -.Laligned: - P1 = P2 >> 2; /* count = n/4 */ - R2 = R1 << 8; /* create quad filler */ - R2.L = R2.L + R1.L(NS); - R2.H = R2.L + R1.H(NS); - P2 = R3; - - LSETUP (.Lquad_loop , .Lquad_loop) LC0=P1; -.Lquad_loop: - [P0++] = R2; - - CC = P0 == P2; - IF !CC JUMP .Lbytes_left; - RTS; - -.Lbytes_left: - R2 = R3; /* end point */ - R3 = P0; /* current position */ - R2 = R2 - R3; /* bytes left */ - P2 = R2; - -.Ltoo_small: - CC = P2 == 0; /* Check zero count */ - IF CC JUMP .Lfinished; /* Unusual */ - -.Lbytes: - LSETUP (.Lbyte_loop , .Lbyte_loop) LC0=P2; -.Lbyte_loop: - B[P0++] = R1; - -.Lfinished: - RTS; - -.Lforce_align: - CC = BITTST (R0, 0); /* odd byte */ - R0 = 4; - R0 = R0 - R2; - P1 = R0; - R0 = P0; /* Recover return address */ - IF !CC JUMP .Lskip1; - B[P0++] = R1; -.Lskip1: - CC = R2 <= 2; /* 2 bytes */ - P2 -= P1; /* reduce count */ - IF !CC JUMP .Laligned; - B[P0++] = R1; - B[P0++] = R1; - JUMP .Laligned; - -.size _memset, .-_memset |