diff options
Diffstat (limited to 'rgo/src/fndbyte.c')
-rw-r--r-- | rgo/src/fndbyte.c | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/rgo/src/fndbyte.c b/rgo/src/fndbyte.c deleted file mode 100644 index 79b4aaf..0000000 --- a/rgo/src/fndbyte.c +++ /dev/null @@ -1,77 +0,0 @@ -/* - Copyright 2022 Gabriel Jensen. - This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. - If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/. -*/ - -#include <rgo-priv.h> - -#include <stddef.h> -#include <stdint.h> - -#if defined(rgo_priv_fastimpl) -__asm__ ( - ".global rgo_fndbyte\n" - - "rgo_fndbyte:\n" - /* - void const * ptr - size_t num - uint_least8_t byte - */ -#if defined(sus_arch_amd64) - /* rax: Address of the current element. */ - "movq %rdi,%rax\n" - /* rsi: Address of the element after the last element. */ - "addq %rdi,%rsi\n" - /* rcx: Current element. */ - ".loop:\n" - "cmpq %rax,%rsi\n" - "je .nfnd\n" /* We have went through the entire array without finding the byte. */ - "movb (%rax),%cl\n" - "cmpb %cl,%dl\n" - "je .fnd\n" /* We have found the byte. */ - "incq %rax\n" - "jmp .loop\n" - ".fnd:\n" - "subq %rdi,%rax\n" - "ret\n" - ".nfnd:\n" - "movq $0xFFFFFFFFFFFFFFFF,%rax\n" - "ret\n" -#elif defined(sus_arch_ia32) - /* eax: Address of the current element. */ - "movl 0x4(%esp),%eax\n" - /* ecx: Address of the element after the last element. */ - "movl 0x8(%esp),%ecx\n" - "addl %eax,%ecx\n" - /* edx: Byte value. */ - "movb 0xC(%esp),%dl\n" - /* ebx: Current element. */ - "pushl %ebx\n" - ".loop:\n" - "cmpl %eax,%ecx\n" - "je .nfnd\n" /* We have went through the entire array without finding the byte. */ - "movb (%eax),%bl\n" - "cmpb %bl,%dl\n" - "je .fnd\n" /* We have found the byte. */ - "incl %eax\n" - "jmp .loop\n" - ".fnd:\n" - "popl %ebx\n" - "subl 0x4(%esp),%eax\n" - "ret\n" - ".nfnd:\n" - "popl %ebx\n" - "movl $0xFFFFFFFF,%eax\n" - "ret\n" -#endif -); -#else -size_t rgo_fndbyte(void const * const _ptr,size_t const _num,uint_least8_t const _byte) { - uint_least8_t const * ptr = (uint_least8_t const *)_ptr; - uint_least8_t const * const afterbuf = ptr + _num; - for (;ptr != afterbuf;++ptr) {sus_unlikely (*ptr == _byte) {return ptr - (uint_least8_t const *)_ptr;}} - return rgo_typlit_usz(-0x1); -} -#endif |