From fa92aeebd478ee9bed5117ec9aab620c01c8cf7a Mon Sep 17 00:00:00 2001
From: root <root@vps1726121001.tech0.ru>
Date: Thu, 3 Oct 2024 17:59:57 +0300
Subject: [PATCH] =?UTF-8?q?feat:=20=D0=B1=D0=BE=D0=BB=D0=B2=D0=B0=D0=BD?=
 =?UTF-8?q?=D0=BA=D0=B0=20=D1=80=D0=B5=D1=88=D0=B5=D0=BD=D0=B8=D1=8F=20?=
 =?UTF-8?q?=D0=BF=D0=B5=D1=80=D0=B2=D0=BE=D0=B3=D0=BE=20=D0=BF=D1=83=D0=BD?=
 =?UTF-8?q?=D0=BA=D1=82=D0=B0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 05-subroutines-params/task1.c | 55 +++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 05-subroutines-params/task1.c

diff --git a/05-subroutines-params/task1.c b/05-subroutines-params/task1.c
new file mode 100644
index 0000000..9579b78
--- /dev/null
+++ b/05-subroutines-params/task1.c
@@ -0,0 +1,55 @@
+#include <stdio.h>
+
+typedef struct
+{
+  unsigned long h;
+  unsigned long l;
+} LongNum;
+
+typedef unsigned char byte;
+
+extern void task_regs(LongNum* a, LongNum* b, LongNum* result);
+
+extern unsigned long task_stack(); // Для передачи через Си потребуется функцкия-обертка
+
+unsigned long stack_wrapper(void* arr, byte bits)
+{
+  unsigned long result = 0;
+  byte shift = bits >> 3;
+  printf("shift is %d", shift);
+  __asm__(
+      "pushq %%rsp\n\t"
+      "movq $2, %%rcx\n\t"
+      "subq $2, %%rsp\n\t"
+      "movb %2, (%%rsp)\n\t"
+      "xorq %%rdx, %%rdx\n\t"
+      "pop %%dx\n\t"
+      "stack_push_loop:\n\t"
+      "subq %%rdx, %%rsp\n\t"
+      "movq (%1), %%rsp\n\t"
+      "addq %%rdx, %1\n\t"
+      "loopq stack_push_loop\n\t"
+      "call stack_wrapper\n\t"
+      "addq %%rdx, %%rdx\n\t" // умножаем на 2
+      "addq %%rdx, %%rsp\n\t"
+      "popq %%rsp"
+      :"=a"(result)
+      :"b"(arr), "d"(shift)
+      :"%rcx"
+  );
+  result = task_stack();
+  return result;
+}
+
+int main()
+{
+  LongNum a = { 0x00000000, 0x01000000}; // По факту передача через стек)
+  LongNum b = { 0x10100010, 0x0900000f};
+  LongNum c;
+
+  task_regs(&a, &b, &c);
+  printf("asdfasfasfasfda %lx %lx", c.h, c.l); // Проверим, что сложили +- корректно
+  int nums[2] = {88, 11};
+  stack_wrapper(nums, sizeof(int));
+  return 0;
+}