user: 下面的汇编指令对应的C源代码是什么:

```asm
<square_matrix_multiply>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x78,%rsp
  mov    %rdi,0x50(%rsp)
  mov    %rsi,0x58(%rsp)
  mov    %rcx,0x60(%rsp)
  cmp    $0x1,%edx
  jne    L83
  mov    (%rdi),%eax
  imul   (%rsi),%eax
  mov    %eax,(%rcx)
L128:
  add    $0x78,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax)
L83:
  mov    %edx,%ebp
  mov    %edx,%r15d
  imul   %edx,%ebp
  mov    %ebp,%edi
  call   <malloc@plt>
  mov    %ebp,%edi
  mov    %rax,0x30(%rsp)
  call   <malloc@plt>
  mov    %ebp,%edi
  mov    %rax,0x8(%rsp)
  call   <malloc@plt>
  mov    %ebp,%edi
  mov    %rax,0x38(%rsp)
  call   <malloc@plt>
  mov    %ebp,%edi
  mov    %rax,0x10(%rsp)
  call   <malloc@plt>
  mov    %ebp,%edi
  mov    %rax,0x40(%rsp)
  call   <malloc@plt>
  mov    %ebp,%edi
  mov    %rax,0x18(%rsp)
  call   <malloc@plt>
  mov    %ebp,%edi
  mov    %rax,0x48(%rsp)
  call   <malloc@plt>
  mov    %rax,0x20(%rsp)
  test   %r15d,%r15d
  jle    L134
  mov    %r15d,%esi
  mov    %r15d,%eax
  mov    %r15d,0x68(%rsp)
  xor    %r14d,%r14d
  sar    %esi
  xor    %r9d,%r9d
  lea    -0x1(%r15),%ebx
  imul   %esi,%eax
  mov    %eax,0x6c(%rsp)
  nop
L68:
  mov    %r14d,%eax
  sub    0x6c(%rsp),%eax
  movslq %r14d,%r8
  mov    0x38(%rsp),%rdi
  mov    %eax,%r11d
  shl    $0x2,%r8
  mov    %r14d,%r12d
  mov    %esi,%ecx
  shr    $0x1f,%r11d
  sar    %r12d
  mov    %r14d,0x28(%rsp)
  neg    %ecx
  add    %eax,%r11d
  mov    0x58(%rsp),%rax
  movslq %r12d,%r12
  sar    %r11d
  lea    0x0(,%r12,4),%rbp
  movslq %r11d,%r11
  lea    (%rax,%r8,1),%rdx
  add    0x50(%rsp),%r8
  lea    0x0(,%r11,4),%rax
  lea    (%rdi,%rax,1),%r15
  add    0x48(%rsp),%rax
  mov    %rax,(%rsp)
  mov    0x30(%rsp),%rax
  lea    (%rax,%rbp,1),%r13
  add    0x40(%rsp),%rbp
  xor    %eax,%eax
  jmp    L173
  nopw   0x0(%rax,%rax,1)
L204:
  cmp    %eax,%esi
  jle    L156
  mov    %edi,0x0(%r13,%rax,4)
  mov    (%rdx),%edi
  mov    %edi,0x0(%rbp,%rax,4)
L155:
  lea    0x1(%rax),%rdi
  add    $0x4,%rdx
  add    $0x1,%ecx
  cmp    %rbx,%rax
  je     L87
L5:
  mov    %rdi,%rax
L173:
  mov    (%r8,%rax,4),%edi
  cmp    %r9d,%esi
  jg     L204
  cmp    %eax,%esi
  jle    L176
  mov    %edi,(%r15,%rax,4)
  mov    (%rsp),%r10
  add    $0x4,%rdx
  add    $0x1,%ecx
  mov    -0x4(%rdx),%edi
  mov    %edi,(%r10,%rax,4)
  lea    0x1(%rax),%rdi
  cmp    %rbx,%rax
  jne    L5
L87:
  mov    0x28(%rsp),%r14d
  mov    0x68(%rsp),%eax
  add    $0x1,%r9d
  add    %eax,%r14d
  cmp    %r9d,%eax
  jne    L68
  mov    0x68(%rsp),%r15d
L134:
  mov    %r15d,%ebx
  shr    $0x1f,%ebx
  add    %r15d,%ebx
  sar    %ebx
  mov    %ebx,%r12d
  imul   %ebx,%r12d
  shl    $0x2,%r12d
  mov    %r12d,%edi
  call   <malloc@plt>
  mov    %r12d,%edi
  mov    %rax,%rbp
  call   <malloc@plt>
  mov    %r12d,%edi
  mov    %rax,%r13
  call   <malloc@plt>
  mov    0x40(%rsp),%rsi
  mov    %rbp,%rcx
  mov    %ebx,%edx
  mov    0x30(%rsp),%rdi
  mov    %rax,%r14
  mov    %rax,0x28(%rsp)
  call   <square_matrix_multiply>
  mov    0x48(%rsp),%rsi
  mov    %r13,%rcx
  mov    %ebx,%edx
  mov    0x8(%rsp),%rdi
  call   <square_matrix_multiply>
  mov    %r14,%rdx
  mov    %r13,%rsi
  mov    %ebx,%ecx
  mov    %rbp,%rdi
  call   <square_matrix_add@plt>
  mov    %r12d,%edi
  call   <malloc@plt>
  mov    %r12d,%edi
  mov    %rax,%r13
  call   <malloc@plt>
  mov    %r12d,%edi
  mov    %rax,%r14
  call   <malloc@plt>
  mov    0x18(%rsp),%rsi
  mov    %r13,%rcx
  mov    %ebx,%edx
  mov    0x30(%rsp),%rdi
  mov    %rax,%rbp
  call   <square_matrix_multiply>
  mov    0x20(%rsp),%rsi
  mov    %r14,%rcx
  mov    %ebx,%edx
  mov    0x8(%rsp),%rdi
  call   <square_matrix_multiply>
  mov    %r14,%rsi
  mov    %ebx,%ecx
  mov    %rbp,%rdx
  mov    %r13,%rdi
  call   <square_matrix_add@plt>
  mov    %r12d,%edi
  call   <malloc@plt>
  mov    %r12d,%edi
  mov    %rax,%r13
  call   <malloc@plt>
  mov    %r12d,%edi
  mov    %rax,%r14
  call   <malloc@plt>
  mov    0x40(%rsp),%rsi
  mov    %r13,%rcx
  mov    %ebx,%edx
  mov    0x38(%rsp),%rdi
  mov    %rax,(%rsp)
  call   <square_matrix_multiply>
  mov    0x48(%rsp),%rsi
  mov    %r14,%rcx
  mov    %ebx,%edx
  mov    0x10(%rsp),%rdi
  call   <square_matrix_multiply>
  mov    (%rsp),%rdx
  mov    %r14,%rsi
  mov    %ebx,%ecx
  mov    %r13,%rdi
  call   <square_matrix_add@plt>
  mov    %r12d,%edi
  call   <malloc@plt>
  mov    %r12d,%edi
  mov    %rax,%r13
  call   <malloc@plt>
  mov    %r12d,%edi
  mov    %rax,%r14
  call   <malloc@plt>
  mov    0x18(%rsp),%rsi
  mov    %r13,%rcx
  mov    %ebx,%edx
  mov    0x38(%rsp),%rdi
  mov    %rax,%r12
  call   <square_matrix_multiply>
  mov    0x20(%rsp),%rsi
  mov    %r14,%rcx
  mov    %ebx,%edx
  mov    0x10(%rsp),%rdi
  call   <square_matrix_multiply>
  mov    %ebx,%ecx
  mov    %r12,%rdx
  mov    %r14,%rsi
  mov    %r13,%rdi
  call   <square_matrix_add@plt>
  test   %r15d,%r15d
  jle    L128
  mov    %r15d,%r10d
  xor    %r13d,%r13d
  lea    -0x1(%r15),%r8d
  xor    %ecx,%ecx
  imul   %ebx,%r10d
  neg    %r10d
  nopl   0x0(%rax)
L79:
  mov    %r10d,%edi
  mov    (%rsp),%rax
  mov    %r13d,%r9d
  mov    0x60(%rsp),%rsi
  shr    $0x1f,%edi
  sar    %r9d
  add    %r10d,%edi
  movslq %r9d,%r9
  sar    %edi
  movslq %edi,%rdi
  lea    (%rax,%rdi,4),%r14
  mov    0x28(%rsp),%rax
  lea    (%rax,%r9,4),%r11
  movslq %r13d,%rax
  lea    (%rsi,%rax,4),%rsi
  xor    %eax,%eax
  jmp    L69
  nopl   0x0(%rax,%rax,1)
L182:
  cmp    %eax,%ebx
  jle    L120
  mov    (%r11,%rax,4),%edx
L81:
  mov    %edx,(%rsi,%rax,4)
  lea    0x1(%rax),%rdx
  cmp    %r8,%rax
  je     L2
L133:
  mov    %rdx,%rax
L69:
  cmp    %ecx,%ebx
  jg     L182
  cmp    %eax,%ebx
  jle    L74
  mov    (%r14,%rax,4),%edx
  mov    %edx,(%rsi,%rax,4)
  lea    0x1(%rax),%rdx
  cmp    %r8,%rax
  jne    L133
L2:
  add    $0x1,%ecx
  add    %r15d,%r10d
  add    %r15d,%r13d
  cmp    %ecx,%r15d
  jne    L79
  add    $0x78,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax,%rax,1)
L156:
  mov    0x8(%rsp),%r14
  movslq %ecx,%r10
  add    %r12,%r10
  mov    %edi,(%r14,%r10,4)
  mov    0x18(%rsp),%r14
  mov    (%rdx),%edi
  mov    %edi,(%r14,%r10,4)
  jmp    L155
  nop
L176:
  mov    0x10(%rsp),%r14
  movslq %ecx,%r10
  add    %r11,%r10
  mov    %edi,(%r14,%r10,4)
  mov    0x20(%rsp),%r14
  mov    (%rdx),%edi
  mov    %edi,(%r14,%r10,4)
  jmp    L155
  nop
L120:
  mov    %eax,%edx
  sub    %ebx,%edx
  movslq %edx,%rdx
  add    %r9,%rdx
  mov    0x0(%rbp,%rdx,4),%edx
  jmp    L81
  nopl   0x0(%rax,%rax,1)
L74:
  mov    %eax,%edx
  sub    %ebx,%edx
  movslq %edx,%rdx
  add    %rdi,%rdx
  mov    (%r12,%rdx,4),%edx
  jmp    L81
```

assistant: ```c
void square_matrix_multiply(int *a1, int *b1, int num, int *c) {
  int n = num, i, j;
  int *a11, *a12, *a21, *a22;
  int *b11, *b12, *b21, *b22;
  int *c11, *c12, *c21, *c22;
  int *c11a, *c11b, *c12a, *c12b, *c21a, *c21b, *c22a, *c22b;
  if (n == 1)
    *c = *a1 * *b1;
  else {
    a11 = malloc(sizeof(int) * num * num / 4);
    a12 = malloc(sizeof(int) * num * num / 4);
    a21 = malloc(sizeof(int) * num * num / 4);
    a22 = malloc(sizeof(int) * num * num / 4);
    b11 = malloc(sizeof(int) * num * num / 4);
    b12 = malloc(sizeof(int) * num * num / 4);
    b21 = malloc(sizeof(int) * num * num / 4);
    b22 = malloc(sizeof(int) * num * num / 4);
    for (i = 0; i < num; i++) {
      for (j = 0; j < num; j++) {
        if (i + 1 <= num / 2 && j + 1 <= num / 2) {
          *(a11 + i * num / 2 + j) = *(a1 + i * num + j);
          *(b11 + i * num / 2 + j) = *(b1 + i * num + j);
        }
        if (i + 1 <= num / 2 && j + 1 > num / 2) {
          *(a12 + i * num / 2 + (j - num / 2)) = *(a1 + i * num + j);
          *(b12 + i * num / 2 + (j - num / 2)) = *(b1 + i * num + j);
        }
        if (i + 1 > num / 2 && j + 1 <= num / 2) {
          *(a21 + (i - num / 2) * num / 2 + j) = *(a1 + i * num + j);
          *(b21 + (i - num / 2) * num / 2 + j) = *(b1 + i * num + j);
        }
        if (i + 1 > num / 2 && j + 1 > num / 2) {
          *(a22 + (i - num / 2) * num / 2 + (j - num / 2)) = *(a1 + i * num + j);
          *(b22 + (i - num / 2) * num / 2 + (j - num / 2)) = *(b1 + i * num + j);
        }
      }
    }
    c11a = malloc(sizeof(int) * (num / 2) * (num / 2));
    c11b = malloc(sizeof(int) * (num / 2) * (num / 2));
    c11 = malloc(sizeof(int) * (num / 2) * (num / 2));
    square_matrix_multiply(a11, b11, num / 2, c11a);
    square_matrix_multiply(a12, b21, num / 2, c11b);
    square_matrix_add(c11a, c11b, c11, num / 2);
    c12a = malloc(sizeof(int) * (num / 2) * (num / 2));
    c12b = malloc(sizeof(int) * (num / 2) * (num / 2));
    c12 = malloc(sizeof(int) * (num / 2) * (num / 2));
    square_matrix_multiply(a11, b12, num / 2, c12a);
    square_matrix_multiply(a12, b22, num / 2, c12b);
    square_matrix_add(c12a, c12b, c12, num / 2);
    c21a = malloc(sizeof(int) * (num / 2) * (num / 2));
    c21b = malloc(sizeof(int) * (num / 2) * (num / 2));
    c21 = malloc(sizeof(int) * (num / 2) * (num / 2));
    square_matrix_multiply(a21, b11, num / 2, c21a);
    square_matrix_multiply(a22, b21, num / 2, c21b);
    square_matrix_add(c21a, c21b, c21, num / 2);
    c22a = malloc(sizeof(int) * (num / 2) * (num / 2));
    c22b = malloc(sizeof(int) * (num / 2) * (num / 2));
    c22 = malloc(sizeof(int) * (num / 2) * (num / 2));
    square_matrix_multiply(a21, b12, num / 2, c22a);
    square_matrix_multiply(a22, b22, num / 2, c22b);
    square_matrix_add(c22a, c22b, c22, num / 2);
    for (i = 0; i < num; i++)
      for (j = 0; j < num; j++) {
        if (i + 1 <= num / 2 && j + 1 <= num / 2)
          *(c + i * num + j) = *(c11 + i * num / 2 + j);
        if (i + 1 <= num / 2 && j + 1 > num / 2)
          *(c + i * num + j) = *(c12 + i * num / 2 + (j - num / 2));
        if (i + 1 > num / 2 && j + 1 <= num / 2)
          *(c + i * num + j) = *(c21 + (i - num / 2) * num / 2 + j);
        if (i + 1 > num / 2 && j + 1 > num / 2)
          *(c + i * num + j) = *(c22 + (i - num / 2) * num / 2 + (j - num / 2));
      }
  }
}
```