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Diffstat (limited to 'arch/m32r/lib/memset.S')
| -rw-r--r-- | arch/m32r/lib/memset.S | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/arch/m32r/lib/memset.S b/arch/m32r/lib/memset.S deleted file mode 100644 index e7f45e6c73f5..000000000000 --- a/arch/m32r/lib/memset.S +++ /dev/null @@ -1,179 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0 */ -/* - * linux/arch/m32r/lib/memset.S - * - * Copyright (C) 2001,2002 Hiroyuki Kondo, and Hirokazu Takata - * Copyright (C) 2004 Hirokazu Takata - * - * void *memset(void *dst, int val, int len); - * - * dst: r0 - * val: r1 - * len: r2 - * ret: r0 - * - */ - - .text - .global memset - -#ifdef CONFIG_ISA_DUAL_ISSUE - - .align 4 -memset: - mv r4, r0 || cmpz r2 - jc r14 - cmpui r2, #16 - bnc qword_align_check - cmpui r2, #4 - bc byte_set -word_align_check: /* len >= 4 */ - and3 r3, r4, #3 - beqz r3, word_set - addi r3, #-4 - neg r3, r3 /* r3 = -(r3 - 4) */ -align_word: - stb r1, @r4 || addi r4, #1 - addi r2, #-1 || addi r3, #-1 - bnez r3, align_word - cmpui r2, #4 - bc byte_set -word_set: - and3 r1, r1, #0x00ff /* r1: abababab <-- ??????ab */ - sll3 r3, r1, #8 - or r1, r3 || addi r4, #-4 - sll3 r3, r1, #16 - or r1, r3 || addi r2, #-4 -word_set_loop: - st r1, @+r4 || addi r2, #-4 - bgtz r2, word_set_loop - bnez r2, byte_set_wrap - st r1, @+r4 - jmp r14 - -qword_align_check: /* len >= 16 */ - and3 r3, r4, #15 - bnez r3, word_align_check -qword_set: - and3 r1, r1, #0x00ff /* r1: abababab <-- ??????ab */ - sll3 r3, r1, #8 - or r1, r3 || addi r4, #-4 - sll3 r3, r1, #16 - or r1, r3 || ldi r5, #16 -qword_set_loop: - ld r3, @(4,r4) /* cache line allocate */ - st r1, @+r4 || addi r2, #-16 - st r1, @+r4 || cmpu r2, r5 - st r1, @+r4 - st r1, @+r4 - bnc qword_set_loop || cmpz r2 - jc r14 -set_remainder: - cmpui r2, #4 - bc byte_set_wrap1 - addi r2, #-4 - bra word_set_loop - -byte_set_wrap: - addi r2, #4 - cmpz r2 - jc r14 -byte_set_wrap1: - addi r4, #4 -#if defined(CONFIG_ISA_M32R2) -byte_set: - addi r2, #-1 || stb r1, @r4+ - bnez r2, byte_set -#elif defined(CONFIG_ISA_M32R) -byte_set: - addi r2, #-1 || stb r1, @r4 - addi r4, #1 - bnez r2, byte_set -#else -#error unknown isa configuration -#endif -end_memset: - jmp r14 - -#else /* not CONFIG_ISA_DUAL_ISSUE */ - - .align 4 -memset: - mv r4, r0 - beqz r2, end_memset - cmpui r2, #16 - bnc qword_align_check - cmpui r2, #4 - bc byte_set -word_align_check: /* len >= 4 */ - and3 r3, r4, #3 - beqz r3, word_set - addi r3, #-4 - neg r3, r3 /* r3 = -(r3 - 4) */ -align_word: - stb r1, @r4 - addi r4, #1 - addi r2, #-1 - addi r3, #-1 - bnez r3, align_word - cmpui r2, #4 - bc byte_set -word_set: - and3 r1, r1, #0x00ff /* r1: abababab <-- ??????ab */ - sll3 r3, r1, #8 - or r1, r3 - sll3 r3, r1, #16 - or r1, r3 - addi r2, #-4 - addi r4, #-4 -word_set_loop: - st r1, @+r4 - addi r2, #-4 - bgtz r2, word_set_loop - bnez r2, byte_set_wrap - st r1, @+r4 - jmp r14 - -qword_align_check: /* len >= 16 */ - and3 r3, r4, #15 - bnez r3, word_align_check -qword_set: - and3 r1, r1, #0x00ff /* r1: abababab <-- ??????ab */ - sll3 r3, r1, #8 - or r1, r3 - sll3 r3, r1, #16 - or r1, r3 - addi r4, #-4 -qword_set_loop: - ld r3, @(4,r4) /* cache line allocate */ - addi r2, #-16 - st r1, @+r4 - st r1, @+r4 - cmpui r2, #16 - st r1, @+r4 - st r1, @+r4 - bnc qword_set_loop - bnez r2, set_remainder - jmp r14 -set_remainder: - cmpui r2, #4 - bc byte_set_wrap1 - addi r2, #-4 - bra word_set_loop - -byte_set_wrap: - addi r2, #4 - beqz r2, end_memset -byte_set_wrap1: - addi r4, #4 -byte_set: - addi r2, #-1 - stb r1, @r4 - addi r4, #1 - bnez r2, byte_set -end_memset: - jmp r14 - -#endif /* not CONFIG_ISA_DUAL_ISSUE */ - - .end |