Add ASM version seat_id

1 files changed, 48 insertions, 0 deletions

diff --git a/5/seat_id.asm b/5/seat_id.asm
new file mode 100644
index 0000000..562dec4
--- /dev/null
+++ b/5/seat_id.asm
@@ -0,0 +1,48 @@
+global seat_id
+
+section .data
+
+section .text
+
+seat_id:
+    xor     eax, eax            ; set up return value
+    cmp     BYTE [rdi], 66      ; B
+    sete    al
+    shl     eax, 1
+    xor     ecx, ecx
+    cmp     BYTE [rdi + 1], 66
+    sete    cl
+    or      eax, ecx
+    shl     eax, 1
+    cmp     BYTE [rdi + 2], 66
+    sete    cl
+    or      eax, ecx
+    shl     eax, 1
+    cmp     BYTE [rdi + 3], 66
+    sete    cl
+    or      eax, ecx
+    shl     eax, 1
+    cmp     BYTE [rdi + 4], 66
+    sete    cl
+    or      eax, ecx
+    shl     eax, 1
+    cmp     BYTE [rdi + 5], 66
+    sete    cl
+    or      eax, ecx
+    shl     eax, 1
+    cmp     BYTE [rdi + 6], 66
+    sete    cl
+    or      eax, ecx
+    shl     eax, 1
+    cmp     BYTE [rdi + 7], 82  ; R
+    sete    cl
+    or      eax, ecx
+    shl     eax, 1
+    cmp     BYTE [rdi + 8], 82
+    sete    cl
+    or      eax, ecx
+    shl     eax, 1
+    cmp     BYTE [rdi + 9], 82
+    sete    cl
+    or      eax, ecx
+    ret