From c85e31163227216e4f33857ddf878142549a3435 Mon Sep 17 00:00:00 2001
From: Nao Pross <naopross@thearcway.org>
Date: Tue, 27 Nov 2018 22:07:14 +0100
Subject: Set input buffer to be 8 bytes to fit in a register for shl

---
 b32e.asm | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/b32e.asm b/b32e.asm
index 04ce671..ada7ff0 100644
--- a/b32e.asm
+++ b/b32e.asm
@@ -4,7 +4,7 @@ rfc4648 db 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567'
 
 section .bss
 
-input_buffer resb 5
+input_buffer resb 8
 output_buffer resb 8
 
 section .text
@@ -43,9 +43,12 @@ b32e:
 	; get 5 bits from the input
 	xor rbx, rbx
 	mov bl, byte [input_buffer]
-	and bl, 0x1f
+	; mask and shift to convert to a number 0 ~ 32
+	and bl, 0xf8
+	shr bl, 3
 
 	; rshift the input buffer
+	shl qword [input_buffer], 5
 
 	; convert to base32
 	add rbx, rfc4648
-- 
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