1 files changed, 0 insertions, 112 deletions
diff --git a/zap/src/memeq.c b/zap/src/memeq.c
deleted file mode 100644
index 7dce213..0000000
--- a/zap/src/memeq.c
+++ /dev/null
@@ -1,112 +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 <zap/priv.h>
-
-#include <zap/mem.h>
-
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdint.h>
-
-#if zap_priv_fastimpl
-__asm__ (
- ".globl zap_memeq\n"
-
- "zap_memeq:\n"
- /*
- void const * lptr
- size_t num
- void const * rptr
- */
-#if defined(sus_arch_amd64)
- /* rdi: Address of the current left element. */
- /* rsi: Number of remaining elements. */
- /* rdx: Address of the current right element. */
- /* rax: Current left element. */
- /* rcx: Current right element. */
- ".wrdcmp:\n"
- "cmpq $0x8,%rsi\n"
- "jl .bytecmp\n"
- "movq (%rdi),%rax\n"
- "movq (%rdx),%rcx\n"
- "cmpq %rax,%rcx\n"
- "jne .neq\n"
- "addq $0x8,%rdi\n"
- "addq $0x8,%rdx\n"
- "subq $0x8,%rsi\n"
- "jmp .wrdcmp\n"
- ".bytecmp:\n"
- "testq %rsi,%rsi\n"
- "jne .eq\n" /* If we have reached the final element, all previous elements have compared equal, and the memory sequences are equal. */
- "movb (%rdi),%al\n"
- "movb (%rdx),%cl\n"
- "cmpb %al,%cl\n"
- "jne .neq\n"
- "incq %rdi\n"
- "incq %rdx\n"
- "decq %rsi\n"
- "jmp .bytecmp\n"
- ".eq:\n"
- "movb $0x1,%al\n"
- "ret\n"
- ".neq:\n"
- "movb $0x0,%al\n"
- "ret\n"
-#elif defined(sus_arch_ia32)
- /* eax: Address of the current left element. */
- "movl 0x4(%esp),%eax\n"
- /* ecx: Number of remaining elements. */
- "movl 0x8(%esp),%ecx\n"
- /* edx: Address of the current right element. */
- "movl 0xC(%esp),%edx\n"
- /* ebx: Current left element. */
- "pushl %ebx\n"
- /* ebx/esi: Current right element. */
- "pushl %esi\n"
- ".wrdcmp:\n"
- "cmpl $0x4,%ecx\n"
- "jl .bytecmp\n"
- "movl (%eax),%ebx\n"
- "movl (%edx),%esi\n"
- "cmpl %ebx,%esi\n"
- "jne .neq\n"
- "addl $0x4,%eax\n"
- "addl $0x4,%edx\n"
- "subl $0x4,%ecx\n"
- "jmp .wrdcmp\n"
- ".bytecmp:\n"
- "testl %ecx,%ecx\n"
- "jne .eq\n" /* If we have reached the final element, all previous elements have compared equal, and the memory sequences are equal. */
- "movb (%eax),%bl\n"
- "movb (%edx),%bh\n"
- "cmpb %bl,%bh\n"
- "jne .neq\n"
- "incl %eax\n"
- "incl %edx\n"
- "decl %ecx\n"
- "jmp .bytecmp\n"
- ".eq:\n"
- "popl %ebx\n"
- "popl %esi\n"
- "movb $0x1,%al\n"
- "ret\n"
- ".neq:\n"
- "popl %ebx\n"
- "popl %esi\n"
- "movb $0x0,%al\n"
- "ret\n"
-#endif
-);
-#else
-bool zap_memeq(void const * const _lptr,size_t const _num,void const * const _rptr) {
- unsigned char const * lpos = _lptr;
- unsigned char const * rpos = _rptr;
- unsigned char const * const afterbuf = lpos + _num;
- for (;lpos != afterbuf;++lpos,++rpos) {sus_likely (*lpos != *rpos) {return false;}}
- return true;
-}
-#endif