From 0f70ee2fc5195deeb6c3d97b57e0c6ee40f421bb Mon Sep 17 00:00:00 2001
From: Nicholas Tay <nick@windblume.net>
Date: Sun, 22 Oct 2023 18:52:36 +1100
Subject: Initial working 3/2/3 passgen in fasm

---
 pasmgen.asm | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 pasmgen.asm

diff --git a/pasmgen.asm b/pasmgen.asm
new file mode 100644
index 0000000..bbd4c37
--- /dev/null
+++ b/pasmgen.asm
@@ -0,0 +1,78 @@
+format ELF64 executable
+
+macro genclass class, class_len, caps
+{
+ 	;; Generate 16 bits (smallest) of randomness from the cpu
+ 	rdrand ax
+ 
+ 	;; Modulo into len range to index in
+	xor rdx, rdx
+ 	mov rbx, class_len
+ 	div bx
+
+	;; Save output letter into out_buf, bump rcx
+	add rdx, class
+	mov rdx, [rdx]
+	if caps eq 1
+		sub rdx, 32
+	end if
+	mov [rcx], rdx
+	inc rcx
+
+	inc rsi
+}
+
+macro triplet
+{
+	genclass consonants, consonants_len
+	genclass vowels, vowels_len
+	genclass consonants, consonants_len
+}
+
+segment readable executable
+
+entry main
+main:
+	;; Store which output byte we're up to in rcx
+	mov rcx, out_buf
+	;; Store chars generated in rsi
+	xor rsi, rsi
+
+	genclass consonants, consonants_len, 1
+	genclass vowels, vowels_len
+	genclass consonants, consonants_len
+	triplet
+	triplet
+	genclass symbols, symbols_len
+	genclass symbols, symbols_len
+	genclass numbers, numbers_len
+	genclass numbers, numbers_len
+	genclass numbers, numbers_len
+
+	mov [rcx], word 10
+	inc rsi
+ 	
+ 	;; Write
+ 	mov rdi, 1  ;; stdout
+ 	mov rdx, rsi
+ 	mov rsi, out_buf
+ 	mov rax, 0x01
+ 	syscall
+ 
+ 	;; Exit (code 0)
+ 	mov rdi, 0
+ 	mov rax, 0x3c
+ 	syscall
+ 
+segment readable writeable
+
+numbers db "0123456789"
+numbers_len = $ - numbers
+vowels db "aeiou"
+vowels_len = $ - vowels
+consonants db "bcdfghjklmnpqrstvwxyz"
+consonants_len = $ - consonants
+symbols db "!@#$%&()-=_+[]{}\\|;<>/?."
+symbols_len = $ - symbols
+
+out_buf rb 32
-- 
cgit