ДЗ № 4.1 Оптимальная сортировка, Шестаков Николай

src/libraries_and_optimizations/optimal_sorting/README.md

@@ -0,0 +1,9 @@
+## Сборка всего этого:
+
+gcc optimal_sorting.s -c
+
+gcc optimal_sorting.o main.c -o main
+
+## Реализация сортировки:
+
+Обычная сортировка слиянием. Ничего нового и удивительного я в этот мир не привнёс.

src/libraries_and_optimizations/optimal_sorting/main.c

@@ -0,0 +1,33 @@
+#include "optimal_sorting.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+int main()
+{
+    int* arr = calloc(100, sizeof(int));
+    int size = 0;
+    printf("Enter array (with an explicit end-of-line character): ");
+    while (scanf("%d ", &arr[size])) {
+        size++;
+    }
+
+    int* sortedArr = mergeSort(arr, size);
+
+    printf("Sorted array: ");
+    for (int i = 0; i < size; i++) {
+        printf("%d ", sortedArr[i]);
+    }
+    printf("\n");
+
+    int return_code = 0;
+    for (int i = 0; i < size; i++) {
+        if (arr[i] != sortedArr[i]) {
+            return_code++;
+        }
+    }
+
+    free(arr);
+    free(sortedArr);
+
+    return return_code;
+}

src/libraries_and_optimizations/optimal_sorting/optimal_sorting.h

@@ -0,0 +1,5 @@
+#pragma once
+
+// Стандартная сортировка слиянием с возвратом указателя на новый, отсортированный массив.
+// Принимает указатель на массив, который нужно отсортировать, и размер массива.
+int* mergeSort(int* array, int size);

src/libraries_and_optimizations/optimal_sorting/optimal_sorting.s

@@ -0,0 +1,328 @@
+	.file	"optimal_sorting.c"
+	.text
+	.p2align 4
+	.globl	merge
+	.type	merge, @function
+merge:
+.LFB11:
+	.cfi_startproc
+	pushq	%r13
+	.cfi_def_cfa_offset 16
+	.cfi_offset 13, -16
+	movl	%esi, %r9d
+	movl	%ecx, %r10d
+	xorl	%eax, %eax
+	pushq	%r12
+	.cfi_def_cfa_offset 24
+	.cfi_offset 12, -24
+	pushq	%rbp
+	.cfi_def_cfa_offset 32
+	.cfi_offset 6, -32
+	pushq	%rbx
+	.cfi_def_cfa_offset 40
+	.cfi_offset 3, -40
+	movq	%rdx, %rbx
+	xorl	%edx, %edx
+	subq	$8, %rsp
+	.cfi_def_cfa_offset 48
+	testl	%esi, %esi
+	jle	.L2
+	testl	%ecx, %ecx
+	jg	.L5
+	jmp	.L2
+	.p2align 4,,10
+	.p2align 3
+.L49:
+	movl	%r11d, %esi
+	addl	$1, %edx
+	movl	%esi, (%rcx)
+	cmpl	%eax, %r10d
+	jle	.L2
+.L50:
+	cmpl	%edx, %r9d
+	jle	.L22
+.L5:
+	movslq	%edx, %rsi
+	movslq	%eax, %rcx
+	movl	(%rdi,%rsi,4), %r11d
+	movl	(%rbx,%rcx,4), %esi
+	leal	(%rax,%rdx), %ecx
+	movslq	%ecx, %rcx
+	leaq	(%r8,%rcx,4), %rcx
+	cmpl	%r11d, %esi
+	jg	.L49
+	addl	$1, %eax
+	movl	%esi, (%rcx)
+	cmpl	%eax, %r10d
+	jg	.L50
+.L2:
+	cmpl	%edx, %r9d
+	jle	.L22
+	movl	%r9d, %r11d
+	movslq	%edx, %rsi
+	subl	%edx, %r11d
+	leal	-1(%r11), %ecx
+	cmpl	$2, %ecx
+	movslq	%eax, %rcx
+	jbe	.L8
+	leaq	(%rcx,%rsi), %rbp
+	leaq	4(%rdi,%rsi,4), %r13
+	leaq	(%r8,%rbp,4), %r12
+	movq	%r12, %rbp
+	subq	%r13, %rbp
+	cmpq	$8, %rbp
+	jbe	.L8
+	leaq	(%rdi,%rsi,4), %rbp
+	movl	%r11d, %esi
+	xorl	%ecx, %ecx
+	shrl	$2, %esi
+	salq	$4, %rsi
+	.p2align 5
+	.p2align 4
+	.p2align 3
+.L9:
+	movdqu	0(%rbp,%rcx), %xmm0
+	movups	%xmm0, (%r12,%rcx)
+	addq	$16, %rcx
+	cmpq	%rsi, %rcx
+	jne	.L9
+	testb	$3, %r11b
+	je	.L7
+	andl	$-4, %r11d
+	addl	%edx, %r11d
+	movslq	%r11d, %rdx
+	movl	(%rdi,%rdx,4), %ecx
+	leal	(%rax,%r11), %edx
+	movslq	%edx, %rdx
+	movl	%ecx, (%r8,%rdx,4)
+	leal	1(%r11), %edx
+	cmpl	%edx, %r9d
+	jle	.L7
+	movslq	%edx, %rcx
+	addl	%eax, %edx
+	addl	$2, %r11d
+	movl	(%rdi,%rcx,4), %esi
+	movslq	%edx, %rdx
+	movl	%esi, (%r8,%rdx,4)
+	cmpl	%r11d, %r9d
+	jle	.L7
+	movl	4(%rdi,%rcx,4), %edx
+	addl	%eax, %r11d
+	movslq	%r11d, %r11
+	movl	%edx, (%r8,%r11,4)
+.L7:
+	cmpl	%eax, %r10d
+	jle	.L17
+	movl	%r10d, %r11d
+	movslq	%eax, %rcx
+	subl	%eax, %r11d
+	leal	-1(%r11), %edx
+	cmpl	$2, %edx
+	movslq	%r9d, %rdx
+	jbe	.L14
+	leaq	(%rdx,%rcx), %rsi
+	leaq	4(%rbx,%rcx,4), %r12
+	leaq	(%r8,%rsi,4), %rbp
+	movq	%rbp, %rsi
+	subq	%r12, %rsi
+	cmpq	$8, %rsi
+	jbe	.L14
+	leaq	(%rbx,%rcx,4), %rsi
+	movl	%r11d, %ecx
+	xorl	%edx, %edx
+	shrl	$2, %ecx
+	salq	$4, %rcx
+	.p2align 5
+	.p2align 4
+	.p2align 3
+.L15:
+	movdqu	(%rsi,%rdx), %xmm0
+	movups	%xmm0, 0(%rbp,%rdx)
+	addq	$16, %rdx
+	cmpq	%rcx, %rdx
+	jne	.L15
+	testb	$3, %r11b
+	je	.L17
+	movl	%r11d, %edx
+	andl	$-4, %edx
+	addl	%edx, %eax
+	movslq	%eax, %rdx
+	movl	(%rbx,%rdx,4), %ecx
+	leal	(%r9,%rax), %edx
+	movslq	%edx, %rdx
+	movl	%ecx, (%r8,%rdx,4)
+	leal	1(%rax), %edx
+	cmpl	%edx, %r10d
+	jle	.L17
+	movslq	%edx, %rcx
+	addl	%r9d, %edx
+	addl	$2, %eax
+	movl	(%rbx,%rcx,4), %esi
+	movslq	%edx, %rdx
+	movl	%esi, (%r8,%rdx,4)
+	cmpl	%eax, %r10d
+	jle	.L17
+	movl	4(%rbx,%rcx,4), %edx
+	addl	%eax, %r9d
+	movslq	%r9d, %r9
+	movl	%edx, (%r8,%r9,4)
+.L17:
+	call	free@PLT
+	addq	$8, %rsp
+	.cfi_remember_state
+	.cfi_def_cfa_offset 40
+	movq	%rbx, %rdi
+	popq	%rbx
+	.cfi_def_cfa_offset 32
+	popq	%rbp
+	.cfi_def_cfa_offset 24
+	popq	%r12
+	.cfi_def_cfa_offset 16
+	popq	%r13
+	.cfi_def_cfa_offset 8
+	jmp	free@PLT
+	.p2align 4,,10
+	.p2align 3
+.L14:
+	.cfi_restore_state
+	leaq	(%r8,%rdx,4), %rdx
+	.p2align 4
+	.p2align 4
+	.p2align 3
+.L19:
+	movl	(%rbx,%rcx,4), %eax
+	movl	%eax, (%rdx,%rcx,4)
+	addq	$1, %rcx
+	cmpl	%ecx, %r10d
+	jg	.L19
+	jmp	.L17
+	.p2align 4,,10
+	.p2align 3
+.L8:
+	leaq	(%r8,%rcx,4), %rcx
+	.p2align 4
+	.p2align 4
+	.p2align 3
+.L11:
+	movl	(%rdi,%rsi,4), %edx
+	movl	%edx, (%rcx,%rsi,4)
+	addq	$1, %rsi
+	cmpl	%esi, %r9d
+	jg	.L11
+	jmp	.L7
+	.p2align 4,,10
+	.p2align 3
+.L22:
+	movl	%edx, %r9d
+	jmp	.L7
+	.cfi_endproc
+.LFE11:
+	.size	merge, .-merge
+	.p2align 4
+	.globl	mergeSort
+	.type	mergeSort, @function
+mergeSort:
+.LFB12:
+	.cfi_startproc
+	pushq	%r15
+	.cfi_def_cfa_offset 16
+	.cfi_offset 15, -16
+	pushq	%r14
+	.cfi_def_cfa_offset 24
+	.cfi_offset 14, -24
+	pushq	%r13
+	.cfi_def_cfa_offset 32
+	.cfi_offset 13, -32
+	movq	%rdi, %r13
+	pushq	%r12
+	.cfi_def_cfa_offset 40
+	.cfi_offset 12, -40
+	pushq	%rbp
+	.cfi_def_cfa_offset 48
+	.cfi_offset 6, -48
+	pushq	%rbx
+	.cfi_def_cfa_offset 56
+	.cfi_offset 3, -56
+	subq	$24, %rsp
+	.cfi_def_cfa_offset 80
+	cmpl	$1, %esi
+	jle	.L59
+	movl	%esi, %ebp
+	movl	%esi, %ebx
+	movl	$4, %esi
+	sarl	%ebp
+	movl	%ebx, %r12d
+	movslq	%ebp, %r14
+	subl	%ebp, %r12d
+	movq	%r14, %rdi
+	call	calloc@PLT
+	movslq	%r12d, %rdi
+	movl	$4, %esi
+	movq	%rax, %r15
+	call	calloc@PLT
+	movl	%ebp, %edx
+	movq	%r13, %rsi
+	movq	%r15, %rdi
+	salq	$2, %rdx
+	movq	%rax, 8(%rsp)
+	call	memcpy@PLT
+	testl	%r12d, %r12d
+	je	.L54
+	movl	%r12d, %edx
+	movq	8(%rsp), %rdi
+	leaq	0(%r13,%r14,4), %rsi
+	salq	$2, %rdx
+	call	memcpy@PLT
+.L54:
+	movl	%ebp, %esi
+	movq	%r15, %rdi
+	call	mergeSort
+	movq	8(%rsp), %rdi
+	movl	%r12d, %esi
+	movq	%rax, %r13
+	call	mergeSort
+	movslq	%ebx, %rdi
+	movl	$4, %esi
+	movq	%rax, %r14
+	call	calloc@PLT
+	movl	%r12d, %ecx
+	movq	%r14, %rdx
+	movl	%ebp, %esi
+	movq	%rax, %r8
+	movq	%r13, %rdi
+	movq	%rax, %rbx
+	call	merge
+.L51:
+	addq	$24, %rsp
+	.cfi_remember_state
+	.cfi_def_cfa_offset 56
+	movq	%rbx, %rax
+	popq	%rbx
+	.cfi_def_cfa_offset 48
+	popq	%rbp
+	.cfi_def_cfa_offset 40
+	popq	%r12
+	.cfi_def_cfa_offset 32
+	popq	%r13
+	.cfi_def_cfa_offset 24
+	popq	%r14
+	.cfi_def_cfa_offset 16
+	popq	%r15
+	.cfi_def_cfa_offset 8
+	ret
+	.p2align 4,,10
+	.p2align 3
+.L59:
+	.cfi_restore_state
+	movl	$4, %esi
+	movl	$1, %edi
+	call	calloc@PLT
+	movq	%rax, %rbx
+	movl	0(%r13), %eax
+	movl	%eax, (%rbx)
+	jmp	.L51
+	.cfi_endproc
+.LFE12:
+	.size	mergeSort, .-mergeSort
+	.ident	"GCC: (GNU) 15.2.1 20250813"
+	.section	.note.GNU-stack,"",@progbits