From 2507f4b19677e73521e1f03b3a915e1d0c5fcee1 Mon Sep 17 00:00:00 2001
From: pommicket <pommicket@gmail.com>
Date: Sat, 13 Nov 2021 14:13:16 -0500
Subject: return, reserve, align

---
 03/ex03 |   8 ++--
 03/in02 | 142 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 03/in03 |   4 ++
 3 files changed, 150 insertions(+), 4 deletions(-)

diff --git a/03/ex03 b/03/ex03
index 90ab070..2301b33 100644
--- a/03/ex03
+++ b/03/ex03
@@ -16,12 +16,12 @@ x4b
 :label
 1B=C
 ;      :l ba b
-;J=d0
+J=d0
 A=d60
 syscall x3c
-;;;;;;;;;;;;;;;;;;;;;;;align
+align
 :label
-;;;;;;;;;;;;;;;;;;;;;;;reserve d1000
+reserve d1000
 B+=J
 B<=d9
 B-=J
@@ -30,7 +30,7 @@ B-=J
 ?A>B:label
 A=:label
 x3c
-;;;;;;;;;;;;;;;;;;;;;;;return
+return
 ;;;;;;;;;;;;;;;;;;;;;;;*-
 ;;;;;;;;;;;;;;;;;;;;;;;/-
 ;;;;;;;;;;;;;;;;;;;;;;;*+
diff --git a/03/in02 b/03/in02
index 7a55324..0eb608b 100644
--- a/03/in02
+++ b/03/in02
@@ -233,6 +233,51 @@ im
 ##1.
 je
 :-st
+im
+--RE  "reserve"
+IA
+im
+--LI
+JA
+im
+--s=
+cl
+BA
+im
+##1.
+je
+:-re
+im
+##a.
+CA   set '\n' as terminator
+im
+--RT  "return"
+IA
+im
+--LI
+JA
+im
+--s=
+cl
+BA
+im
+##1.
+je
+:-rt
+im
+--AL  "align"
+IA
+im
+--LI
+JA
+im
+--s=
+cl
+BA
+im
+##1.
+je
+:-al
 jm
 :-ex
 // handle += instruction
@@ -1834,6 +1879,30 @@ im
 cl
 jm
 :-rl  next line
+// handle "reserve <number>"
+::re
+im
+##8.
+BA
+im
+--LI
++B
+BA
+im
+--nu
+cl
+IA   offset
+im
+##4. output fd
+JA
+im
+##1. whence = SEEK_CUR
+DA
+im
+##8. syscall 8 = lseek
+sy
+jm
+:-rl  next line
 // handle "syscall <number>"
 ::sy
 im
@@ -2047,6 +2116,55 @@ jm
 ::x$
 AJ
 re  return
+// deal with "return"
+::rt
+im
+--Rt
+IA
+im
+##1.
+DA
+im
+--wr
+cl
+jm
+:-rl  next line
+// deal with "align"
+::al
+// first get current address
+im
+##4. output fd
+JA
+zA
+IA   offset = 0
+im
+##1. whence = SEEK_CUR
+DA
+im
+##8. syscall 8 = lseek
+sy
+BA
+im
+##8.
++B
+BA
+im
+##fffffffffffffff8.
+&B
+// okay rax now holds address we should seek to
+IA  offset
+zA
+DA   whence = SEEK_SET
+im
+##4. output fd
+JA
+im
+##8.  lseek
+sy
+jm
+:-rl  next line
+::Rt
+re
 // bad instruction
 ::!i
 im
@@ -2169,6 +2287,30 @@ jm
 't
 'r
 20
+::RE  "reserve" text
+'r
+'e
+'s
+'e
+'r
+'v
+'e
+20
+::RT  "return" text
+'r
+'e
+'t
+'u
+'r
+'n
+\n
+::AL  "align" text
+'a
+'l
+'i
+'g
+'n
+\n
 ::IF  input file name
 'i
 'n
diff --git a/03/in03 b/03/in03
index 5a797c1..3be190d 100644
--- a/03/in03
+++ b/03/in03
@@ -1,3 +1,7 @@
+return
+str Hi
+align
+return
 J=d1
 I=:hello_world
 D=:hello_world_end
-- 
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