user: What is the c source code of the assembly code below:

```asm
<kernel_sgemv_t_2_lib8>:
  endbr64
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    0x30(%rsp),%ebx
  test   %edi,%edi
  jle    L113
  mov    %esi,%r11d
  mov    %rdx,%r10
  mov    %ecx,%esi
  sub    %r11d,%edi
  test   %r11d,%r11d
  jle    L29
  lea    -0x1(%r11),%eax
  cmp    $0x2,%eax
  jbe    L96
  mov    %r11d,%r12d
  lea    0x20(%rdx),%rbp
  shr    $0x2,%r12d
  lea    -0x1(%r12),%eax
  cmp    $0x1,%eax
  jbe    L138
  lea    -0x3(%r12),%eax
  pxor   %xmm0,%xmm0
  movups 0x10(%rdx),%xmm3
  movups (%rdx),%xmm1
  and    $0xfffffffe,%eax
  mov    %r8,%rcx
  movaps %xmm0,%xmm2
  mov    $0x2,%r14d
  add    $0x4,%eax
  jmp    L36
  cs nopw 0x0(%rax,%rax,1)
L136:
  movaps %xmm6,%xmm3
L36:
  movups (%rcx),%xmm6
  mov    %r14d,%edx
  add    $0x2,%r14d
  mov    %rbp,%r13
  add    $0x20,%rcx
  add    $0x20,%rbp
  mulps  %xmm6,%xmm1
  addss  %xmm1,%xmm2
  movaps %xmm1,%xmm4
  shufps $0x55,%xmm1,%xmm4
  addss  %xmm4,%xmm2
  movaps %xmm1,%xmm4
  unpckhps %xmm1,%xmm4
  shufps $0xff,%xmm1,%xmm1
  addss  %xmm4,%xmm2
  movaps %xmm2,%xmm4
  movaps %xmm6,%xmm2
  movups -0x10(%rbp),%xmm6
  addss  %xmm1,%xmm4
  movups -0x20(%rbp),%xmm1
  mulps  %xmm1,%xmm2
  addss  %xmm2,%xmm0
  movaps %xmm2,%xmm5
  shufps $0x55,%xmm2,%xmm5
  addss  %xmm5,%xmm0
  movaps %xmm2,%xmm5
  unpckhps %xmm2,%xmm5
  shufps $0xff,%xmm2,%xmm2
  addss  %xmm5,%xmm0
  movaps %xmm0,%xmm5
  movups -0x10(%rcx),%xmm0
  addss  %xmm2,%xmm5
  mulps  %xmm3,%xmm0
  movaps %xmm0,%xmm2
  movaps %xmm0,%xmm3
  addss  %xmm4,%xmm2
  shufps $0x55,%xmm0,%xmm3
  addss  %xmm3,%xmm2
  movaps %xmm0,%xmm3
  unpckhps %xmm0,%xmm3
  shufps $0xff,%xmm0,%xmm0
  addss  %xmm3,%xmm2
  movups -0x10(%rcx),%xmm3
  mulps  %xmm6,%xmm3
  addss  %xmm0,%xmm2
  movaps %xmm3,%xmm0
  movaps %xmm3,%xmm4
  addss  %xmm5,%xmm0
  shufps $0x55,%xmm3,%xmm4
  addss  %xmm4,%xmm0
  movaps %xmm3,%xmm4
  unpckhps %xmm3,%xmm4
  shufps $0xff,%xmm3,%xmm3
  addss  %xmm4,%xmm0
  addss  %xmm3,%xmm0
  cmp    %r14d,%eax
  jne    L136
L40:
  xor    %eax,%eax
  nopw   0x0(%rax,%rax,1)
L155:
  movups (%rcx,%rax,1),%xmm5
  movups 0x0(%r13,%rax,1),%xmm1
  add    $0x1,%edx
  mulps  %xmm5,%xmm1
  movaps %xmm1,%xmm3
  addss  %xmm2,%xmm3
  movaps %xmm1,%xmm2
  shufps $0x55,%xmm1,%xmm2
  addss  %xmm2,%xmm3
  movaps %xmm1,%xmm2
  unpckhps %xmm1,%xmm2
  shufps $0xff,%xmm1,%xmm1
  addss  %xmm3,%xmm2
  addss  %xmm1,%xmm2
  movups 0x0(%rbp,%rax,1),%xmm1
  add    $0x10,%rax
  mulps  %xmm5,%xmm1
  addss  %xmm1,%xmm0
  movaps %xmm1,%xmm3
  shufps $0x55,%xmm1,%xmm3
  addss  %xmm3,%xmm0
  movaps %xmm1,%xmm3
  unpckhps %xmm1,%xmm3
  shufps $0xff,%xmm1,%xmm1
  addss  %xmm3,%xmm0
  addss  %xmm1,%xmm0
  cmp    %r12d,%edx
  jb     L155
  mov    %r11d,%eax
  and    $0xfffffffc,%eax
  mov    %eax,%edx
  shl    $0x2,%rdx
  lea    (%r10,%rdx,1),%rcx
  add    %r8,%rdx
  cmp    %eax,%r11d
  je     L25
L120:
  mov    %r11d,%ebp
  sub    %eax,%ebp
  cmp    $0x1,%ebp
  je     L193
  movq   (%r8,%rax,4),%xmm4
  movq   (%r10,%rax,4),%xmm1
  mov    %ebp,%r12d
  and    $0xfffffffe,%r12d
  mulps  %xmm4,%xmm1
  addss  %xmm1,%xmm2
  shufps $0xe5,%xmm1,%xmm1
  addss  %xmm1,%xmm2
  movq   0x20(%r10,%rax,4),%xmm1
  mov    %r12d,%eax
  shl    $0x2,%rax
  mulps  %xmm4,%xmm1
  add    %rax,%rcx
  add    %rax,%rdx
  addss  %xmm1,%xmm0
  shufps $0xe5,%xmm1,%xmm1
  addss  %xmm1,%xmm0
  cmp    %r12d,%ebp
  je     L25
L193:
  movss  (%rdx),%xmm1
  movss  (%rcx),%xmm3
  mulss  %xmm1,%xmm3
  mulss  0x20(%rcx),%xmm1
  addss  %xmm3,%xmm2
  addss  %xmm1,%xmm0
L25:
  mov    %r11d,%r11d
  lea    -0x8(,%rsi,8),%eax
  shl    $0x2,%r11
  cltq
  lea    (%r11,%rax,4),%rax
  add    %r11,%r8
  add    %rax,%r10
  jmp    L236
  nop
L29:
  pxor   %xmm0,%xmm0
  movaps %xmm0,%xmm2
L236:
  cmp    $0x7,%edi
  jle    L139
  shl    $0x3,%esi
  lea    -0x8(%rdi),%r11d
  mov    %r8,%rdx
  mov    %r10,%rax
  movslq %esi,%rsi
  shr    $0x3,%r11d
  xor    %ecx,%ecx
  shl    $0x2,%rsi
  add    $0x1,%r11d
  xchg   %ax,%ax
L19:
  movups (%rdx),%xmm7
  movups (%rax),%xmm1
  add    $0x1,%ecx
  add    $0x20,%rdx
  movups 0x10(%rax),%xmm3
  mulps  %xmm7,%xmm1
  movups -0x10(%rdx),%xmm7
  mulps  %xmm7,%xmm3
  movups -0x20(%rdx),%xmm7
  addss  %xmm1,%xmm2
  movaps %xmm1,%xmm4
  shufps $0x55,%xmm1,%xmm4
  movaps %xmm3,%xmm6
  addss  %xmm4,%xmm2
  movaps %xmm1,%xmm4
  unpckhps %xmm3,%xmm6
  unpckhps %xmm1,%xmm4
  shufps $0xff,%xmm1,%xmm1
  addss  %xmm4,%xmm2
  movups 0x30(%rax),%xmm4
  addss  %xmm2,%xmm1
  movaps %xmm3,%xmm2
  shufps $0x55,%xmm3,%xmm2
  addss  %xmm3,%xmm1
  shufps $0xff,%xmm3,%xmm3
  addss  %xmm1,%xmm2
  movups 0x20(%rax),%xmm1
  add    %rsi,%rax
  mulps  %xmm7,%xmm1
  movups -0x10(%rdx),%xmm7
  addss  %xmm6,%xmm2
  mulps  %xmm7,%xmm4
  addss  %xmm3,%xmm2
  movaps %xmm1,%xmm5
  addss  %xmm0,%xmm5
  movaps %xmm1,%xmm0
  shufps $0x55,%xmm1,%xmm0
  addss  %xmm0,%xmm5
  movaps %xmm1,%xmm0
  unpckhps %xmm1,%xmm0
  shufps $0xff,%xmm1,%xmm1
  addss  %xmm5,%xmm0
  addss  %xmm1,%xmm0
  movaps %xmm4,%xmm1
  shufps $0x55,%xmm4,%xmm1
  addss  %xmm4,%xmm0
  addss  %xmm1,%xmm0
  movaps %xmm4,%xmm1
  unpckhps %xmm4,%xmm1
  shufps $0xff,%xmm4,%xmm4
  addss  %xmm1,%xmm0
  addss  %xmm4,%xmm0
  cmp    %ecx,%r11d
  ja     L19
  mov    %r11d,%eax
  shl    $0x3,%r11d
  imul   %rax,%rsi
  shl    $0x5,%rax
  add    %rax,%r8
  add    %rsi,%r10
L189:
  cmp    %edi,%r11d
  jge    L31
  sub    %r11d,%edi
  lea    -0x1(%rdi),%eax
  cmp    $0x2,%eax
  jbe    L20
  movups (%r8),%xmm5
  movups (%r10),%xmm1
  mov    %edi,%eax
  shr    $0x2,%eax
  mulps  %xmm5,%xmm1
  addss  %xmm1,%xmm2
  movaps %xmm1,%xmm3
  shufps $0x55,%xmm1,%xmm3
  addss  %xmm3,%xmm2
  movaps %xmm1,%xmm3
  unpckhps %xmm1,%xmm3
  shufps $0xff,%xmm1,%xmm1
  addss  %xmm3,%xmm2
  addss  %xmm1,%xmm2
  movups 0x20(%r10),%xmm1
  mulps  %xmm5,%xmm1
  addss  %xmm1,%xmm0
  movaps %xmm1,%xmm3
  shufps $0x55,%xmm1,%xmm3
  addss  %xmm3,%xmm0
  movaps %xmm1,%xmm3
  unpckhps %xmm1,%xmm3
  shufps $0xff,%xmm1,%xmm1
  addss  %xmm3,%xmm0
  addss  %xmm1,%xmm0
  cmp    $0x1,%eax
  je     L202
  movups 0x10(%r8),%xmm7
  movups 0x10(%r10),%xmm1
  mulps  %xmm7,%xmm1
  addss  %xmm1,%xmm2
  movaps %xmm1,%xmm3
  shufps $0x55,%xmm1,%xmm3
  addss  %xmm2,%xmm3
  movaps %xmm1,%xmm2
  unpckhps %xmm1,%xmm2
  shufps $0xff,%xmm1,%xmm1
  addss  %xmm3,%xmm2
  addss  %xmm1,%xmm2
  movups 0x30(%r10),%xmm1
  mulps  %xmm7,%xmm1
  addss  %xmm1,%xmm0
  movaps %xmm1,%xmm3
  shufps $0x55,%xmm1,%xmm3
  addss  %xmm0,%xmm3
  movaps %xmm1,%xmm0
  unpckhps %xmm1,%xmm0
  shufps $0xff,%xmm1,%xmm1
  addss  %xmm3,%xmm0
  addss  %xmm1,%xmm0
L202:
  mov    %edi,%ecx
  and    $0xfffffffc,%ecx
  mov    %ecx,%eax
  shl    $0x2,%rax
  lea    (%r10,%rax,1),%rdx
  add    %r8,%rax
  cmp    %edi,%ecx
  je     L31
L222:
  sub    %ecx,%edi
  cmp    $0x1,%edi
  je     L239
  movq   (%r8,%rcx,4),%xmm4
  movq   (%r10,%rcx,4),%xmm1
  mov    %edi,%esi
  and    $0xfffffffe,%esi
  mulps  %xmm4,%xmm1
  addss  %xmm1,%xmm2
  shufps $0xe5,%xmm1,%xmm1
  addss  %xmm1,%xmm2
  movq   0x20(%r10,%rcx,4),%xmm1
  mov    %esi,%ecx
  shl    $0x2,%rcx
  mulps  %xmm4,%xmm1
  add    %rcx,%rdx
  add    %rcx,%rax
  addss  %xmm1,%xmm0
  shufps $0xe5,%xmm1,%xmm1
  addss  %xmm1,%xmm0
  cmp    %edi,%esi
  je     L31
L239:
  movss  (%rax),%xmm1
  movss  (%rdx),%xmm3
  mulss  %xmm1,%xmm3
  mulss  0x20(%rdx),%xmm1
  addss  %xmm3,%xmm2
  addss  %xmm1,%xmm0
L31:
  test   %ebx,%ebx
  jne    L65
  movss  %xmm2,(%r9)
  movss  %xmm0,0x4(%r9)
L113:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
  nopl   0x0(%rax,%rax,1)
L65:
  movss  (%r9),%xmm3
  movss  0x4(%r9),%xmm1
  cmp    $0x1,%ebx
  je     L44
  subss  %xmm2,%xmm3
  subss  %xmm0,%xmm1
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  movss  %xmm3,(%r9)
  movss  %xmm1,0x4(%r9)
  ret
  nopl   0x0(%rax)
L44:
  addss  %xmm2,%xmm3
  addss  %xmm0,%xmm1
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  movss  %xmm3,(%r9)
  movss  %xmm1,0x4(%r9)
  ret
  nopl   0x0(%rax)
L139:
  xor    %r11d,%r11d
  jmp    L189
L20:
  mov    %r8,%rax
  mov    %r10,%rdx
  xor    %ecx,%ecx
  jmp    L222
L96:
  pxor   %xmm0,%xmm0
  mov    %r8,%rdx
  mov    %r10,%rcx
  xor    %eax,%eax
  movaps %xmm0,%xmm2
  jmp    L120
L138:
  pxor   %xmm0,%xmm0
  mov    %rdx,%r13
  mov    %r8,%rcx
  xor    %edx,%edx
  movaps %xmm0,%xmm2
  jmp    L40
```

assistant: ```c
void kernel_sgemv_t_2_lib8(int kmax, int kna, float *A, int sda, float *x, float *y, int alg) {
  if (kmax <= 0)
    return;
  const int lda = 8;
  const int bs = 8;
  int k, ka = kmax - kna;
  float x_0, x_1, x_2, x_3, y_0 = 0, y_1 = 0;
  if (kna > 0) {
    k = 0;
    for (; k < kna; k++) {
      x_0 = x[0];
      y_0 += A[0 + lda * 0] * x_0;
      y_1 += A[0 + lda * 1] * x_0;
      A += 1;
      x += 1;
    }
    A += (sda - 1) * lda;
  }
  k = 0;
  for (; k < ka - bs + 1; k += bs) {
    x_0 = x[0];
    x_1 = x[1];
    x_2 = x[2];
    x_3 = x[3];
    y_0 += A[0 + lda * 0] * x_0;
    y_1 += A[0 + lda * 1] * x_0;
    y_0 += A[1 + lda * 0] * x_1;
    y_1 += A[1 + lda * 1] * x_1;
    y_0 += A[2 + lda * 0] * x_2;
    y_1 += A[2 + lda * 1] * x_2;
    y_0 += A[3 + lda * 0] * x_3;
    y_1 += A[3 + lda * 1] * x_3;
    x_0 = x[4];
    x_1 = x[5];
    x_2 = x[6];
    x_3 = x[7];
    y_0 += A[4 + lda * 0] * x_0;
    y_1 += A[4 + lda * 1] * x_0;
    y_0 += A[5 + lda * 0] * x_1;
    y_1 += A[5 + lda * 1] * x_1;
    y_0 += A[6 + lda * 0] * x_2;
    y_1 += A[6 + lda * 1] * x_2;
    y_0 += A[7 + lda * 0] * x_3;
    y_1 += A[7 + lda * 1] * x_3;
    A += sda * bs;
    x += 8;
  }
  for (; k < ka; k++) {
    x_0 = x[0];
    y_0 += A[0 + lda * 0] * x_0;
    y_1 += A[0 + lda * 1] * x_0;
    A += 1;
    x += 1;
  }
  if (alg == 0) {
    y[0] = y_0;
    y[1] = y_1;
  } else if (alg == 1) {
    y[0] += y_0;
    y[1] += y_1;
  } else {
    y[0] -= y_0;
    y[1] -= y_1;
  }
}
```