user: 下面的汇编指令对应的C源代码是什么：

```asm
<gsa_walk>:
  endbr64
  push   %r15
  mov    %edx,%r15d
  push   %r14
  movslq %esi,%r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %r14,%rbx
  sub    $0x48,%rsp
  mov    %rdi,0x20(%rsp)
  mov    %r14d,%edi
  imul   %r14d,%edi
  mov    %edx,0x14(%rsp)
  mov    %rcx,0x28(%rsp)
  shl    $0x2,%edi
  mov    %fs:0x28,%rax
  mov    %rax,0x38(%rsp)
  xor    %eax,%eax
  call   <malloc@plt>
  test   %r14d,%r14d
  mov    %rax,%r12
  setg   %al
  xor    %edi,%edi
  test   %r15d,%r15d
  setg   %dil
  and    %eax,%edi
  call   <assert@plt>
  test   %r12,%r12
  je     L151
L15:
  test   %ebx,%ebx
  jle    L132
  lea    0x0(,%r14,4),%r15
  mov    %r12,%rcx
  xor    %ebp,%ebp
  nopl   0x0(%rax,%rax,1)
L26:
  mov    %rcx,%rdi
  mov    %r15,%rdx
  xor    %esi,%esi
  add    $0x1,%ebp
  call   <memset@plt>
  mov    %rax,%rcx
  add    %r15,%rcx
  cmp    %ebp,%ebx
  jne    L26
L132:
  mov    %ebx,%ebp
  shr    $0x1f,%ebp
  add    %ebx,%ebp
  sar    %ebp
  movslq %ebp,%rax
  mov    %ebp,0x34(%rsp)
  imul   %rax,%r14
  shl    $0x2,%rax
  mov    %ebp,0x30(%rsp)
  lea    (%rax,%r14,4),%rax
  movl   $0x1,(%r12,%rax,1)
  mov    0x14(%rsp),%eax
  test   %eax,%eax
  jle    L77
  cmpq   $0x0,0x20(%rsp)
  je     L107
  pxor   %xmm4,%xmm4
  xor    %r13d,%r13d
  lea    0x34(%rsp),%r15
  movsd  %xmm4,0x8(%rsp)
  lea    0x30(%rsp),%r14
  jmp    L9
  nopl   0x0(%rax,%rax,1)
L48:
  cmp    %r13d,0x14(%rsp)
  jle    L158
L9:
  mov    0x34(%rsp),%ecx
  mov    0x30(%rsp),%edx
  add    $0x1,%r13d
  lea    D1(%rip),%rsi
  mov    0x20(%rsp),%rdi
  call   <fprintf@plt>
  mov    0x30(%rsp),%edi
  mov    $0x2,%esi
  sub    %ebp,%edi
  call   <pow@plt>
  mov    0x34(%rsp),%edi
  mov    $0x2,%esi
  mov    %rax,0x18(%rsp)
  sub    %ebp,%edi
  call   <pow@plt>
  pxor   %xmm0,%xmm0
  add    0x18(%rsp),%rax
  mov    %ebx,%esi
  cvtsi2sd %rax,%xmm0
  mov    %r15,%rcx
  mov    %r14,%rdx
  mov    %r12,%rdi
  addsd  0x8(%rsp),%xmm0
  movsd  %xmm0,0x8(%rsp)
  call   <take_next_step@plt>
  test   %eax,%eax
  jne    L48
L158:
  mov    0x28(%rsp),%rax
  test   %rax,%rax
  je     L21
  pxor   %xmm1,%xmm1
  movsd  0x8(%rsp),%xmm0
  cvtsi2sd %r13d,%xmm1
  divsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
L21:
  mov    %r12,%rdi
  call   <free@plt>
  mov    0x38(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L75
  add    $0x48,%rsp
  mov    %r13d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L107:
  pxor   %xmm5,%xmm5
  xor    %r13d,%r13d
  lea    0x34(%rsp),%r15
  movsd  %xmm5,0x8(%rsp)
  lea    0x30(%rsp),%r14
  jmp    L63
  nopw   0x0(%rax,%rax,1)
L0:
  cmp    %r13d,0x14(%rsp)
  jle    L158
L63:
  mov    0x30(%rsp),%edi
  mov    $0x2,%esi
  add    $0x1,%r13d
  sub    %ebp,%edi
  call   <pow@plt>
  mov    0x34(%rsp),%edi
  mov    $0x2,%esi
  mov    %rax,0x18(%rsp)
  sub    %ebp,%edi
  call   <pow@plt>
  pxor   %xmm0,%xmm0
  add    0x18(%rsp),%rax
  mov    %ebx,%esi
  cvtsi2sd %rax,%xmm0
  mov    %r15,%rcx
  mov    %r14,%rdx
  mov    %r12,%rdi
  addsd  0x8(%rsp),%xmm0
  movsd  %xmm0,0x8(%rsp)
  call   <take_next_step@plt>
  test   %eax,%eax
  jne    L0
  jmp    L158
L151:
  lea    D10(%rip),%rdi
  call   <perror@plt>
  xor    %eax,%eax
  call   <abort@plt>
  jmp    L15
L77:
  pxor   %xmm6,%xmm6
  xor    %r13d,%r13d
  movsd  %xmm6,0x8(%rsp)
  jmp    L158
L75:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: data_label: D1
datatype: string
name: parse_data
arguments: data_label: D10
datatype: string

tool: D1: %d %d


tool: D10: malloc() lattice

assistant: ```c
int gsa_walk(FILE *fout, int dim, int nsteps, double *pdist) {
  bool(*lattice)[dim] = malloc(dim * dim * sizeof(bool));
  int asteps;
  int i, j;
  int last_x, last_y;
  double sum_r2;
  bool alive;
  assert(dim > 0 && nsteps > 0);
  if (lattice == NULL) {
    perror("malloc() lattice");
    abort();
  }
  for (i = 0; i < dim; i++) {
    for (j = 0; j < dim; j++) {
      lattice[i][j] = false;
    }
  }
  alive = true;
  last_x = last_y = dim / 2;
  lattice[last_x][last_y] = true;
  asteps = 0;
  sum_r2 = 0;
  while (alive && asteps < nsteps) {
    if (fout != NULL) {
      fprintf(fout, "%d %d\n", last_x, last_y);
    }
    sum_r2 += pow(last_x - dim / 2, 2) + pow(last_y - dim / 2, 2);
    alive = take_next_step((bool *)lattice, dim, &last_x, &last_y);
    asteps++;
  }
  if (pdist != NULL) {
    *pdist = sum_r2 / asteps;
  }
  free(lattice);
  return asteps;
}
```