user: 请从给定的汇编指令推导出C源代码：

```asm
<ksa>:
  endbr64
  movdqa D53(%rip),%xmm0
  mov    %rsi,%r10
  mov    %edx,%r8d
  xor    %ecx,%ecx
  xor    %r9d,%r9d
  movups %xmm0,(%rdi)
  movdqa D4(%rip),%xmm0
  movups %xmm0,0x10(%rdi)
  movdqa D25(%rip),%xmm0
  movups %xmm0,0x20(%rdi)
  movdqa D13(%rip),%xmm0
  movups %xmm0,0x30(%rdi)
  movdqa D117(%rip),%xmm0
  movups %xmm0,0x40(%rdi)
  movdqa D97(%rip),%xmm0
  movups %xmm0,0x50(%rdi)
  movdqa D122(%rip),%xmm0
  movups %xmm0,0x60(%rdi)
  movdqa D51(%rip),%xmm0
  movups %xmm0,0x70(%rdi)
  movdqa D105(%rip),%xmm0
  movups %xmm0,0x80(%rdi)
  movdqa D100(%rip),%xmm0
  movups %xmm0,0x90(%rdi)
  movdqa D104(%rip),%xmm0
  movups %xmm0,0xa0(%rdi)
  movdqa D37(%rip),%xmm0
  movups %xmm0,0xb0(%rdi)
  movdqa D123(%rip),%xmm0
  movups %xmm0,0xc0(%rdi)
  movdqa D46(%rip),%xmm0
  movups %xmm0,0xd0(%rdi)
  movdqa D139(%rip),%xmm0
  movups %xmm0,0xe0(%rdi)
  movdqa D152(%rip),%xmm0
  movups %xmm0,0xf0(%rdi)
  cs nopw 0x0(%rax,%rax,1)
L4:
  mov    %ecx,%eax
  movzbl (%rdi,%rcx,1),%esi
  cltd
  idiv   %r8d
  movslq %edx,%rdx
  movzbl (%r10,%rdx,1),%eax
  add    %esi,%eax
  add    %r9d,%eax
  movzbl %al,%r9d
  movzbl %al,%eax
  add    %rdi,%rax
  movzbl (%rax),%edx
  mov    %dl,(%rdi,%rcx,1)
  add    $0x1,%rcx
  mov    %sil,(%rax)
  cmp    $0x100,%rcx
  jne    L4
  ret
```

tool_calls: name: read_data
arguments: data_label: D53
datatype: byte[16]
name: read_data
arguments: data_label: D4
datatype: byte[16]
name: read_data
arguments: data_label: D25
datatype: byte[16]
name: read_data
arguments: data_label: D13
datatype: byte[16]
name: read_data
arguments: data_label: D117
datatype: byte[16]
name: read_data
arguments: data_label: D97
datatype: byte[16]
name: read_data
arguments: data_label: D122
datatype: byte[16]
name: read_data
arguments: data_label: D51
datatype: byte[16]
name: read_data
arguments: data_label: D105
datatype: byte[16]
name: read_data
arguments: data_label: D100
datatype: byte[16]
name: read_data
arguments: data_label: D104
datatype: byte[16]
name: read_data
arguments: data_label: D37
datatype: byte[16]
name: read_data
arguments: data_label: D123
datatype: byte[16]
name: read_data
arguments: data_label: D46
datatype: byte[16]
name: read_data
arguments: data_label: D139
datatype: byte[16]
name: read_data
arguments: data_label: D152
datatype: byte[16]

tool: {"D53": [0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f]}

tool: {"D4": [0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1a,0x1b,0x1c,0x1d,0x1e,0x1f]}

tool: {"D25": [0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f]}

tool: {"D13": [0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f]}

tool: {"D117": [0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f]}

tool: {"D97": [0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5a,0x5b,0x5c,0x5d,0x5e,0x5f]}

tool: {"D122": [0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f]}

tool: {"D51": [0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x7b,0x7c,0x7d,0x7e,0x7f]}

tool: {"D105": [0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,0x89,0x8a,0x8b,0x8c,0x8d,0x8e,0x8f]}

tool: {"D100": [0x90,0x91,0x92,0x93,0x94,0x95,0x96,0x97,0x98,0x99,0x9a,0x9b,0x9c,0x9d,0x9e,0x9f]}

tool: {"D104": [0xa0,0xa1,0xa2,0xa3,0xa4,0xa5,0xa6,0xa7,0xa8,0xa9,0xaa,0xab,0xac,0xad,0xae,0xaf]}

tool: {"D37": [0xb0,0xb1,0xb2,0xb3,0xb4,0xb5,0xb6,0xb7,0xb8,0xb9,0xba,0xbb,0xbc,0xbd,0xbe,0xbf]}

tool: {"D123": [0xc0,0xc1,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7,0xc8,0xc9,0xca,0xcb,0xcc,0xcd,0xce,0xcf]}

tool: {"D46": [0xd0,0xd1,0xd2,0xd3,0xd4,0xd5,0xd6,0xd7,0xd8,0xd9,0xda,0xdb,0xdc,0xdd,0xde,0xdf]}

tool: {"D139": [0xe0,0xe1,0xe2,0xe3,0xe4,0xe5,0xe6,0xe7,0xe8,0xe9,0xea,0xeb,0xec,0xed,0xee,0xef]}

tool: {"D152": [0xf0,0xf1,0xf2,0xf3,0xf4,0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfe,0xff]}

assistant: ```c
void ksa(unsigned char state[], unsigned char key[], int len) {
  int i, j = 0, t;
  for (i = 0; i < 256; ++i)
    state[i] = i;
  for (i = 0; i < 256; ++i) {
    j = (j + state[i] + key[i % len]) % 256;
    t = state[i];
    state[i] = state[j];
    state[j] = t;
  }
}
```