From 4335d248d18987a050d8ac26965c90718eef7562 Mon Sep 17 00:00:00 2001
From: user <user@clank>
Date: Thu, 16 Jul 2026 07:21:40 +0200
Subject: libc + CLI tools: a small C userland

- libc: add putc, puts, strlen, getargs (args string), EOF (=4) for readc.
- args: shell splits the command line at the first space ("cmd\0args\0" at
  $A000, inherited by the child via fork); getargs() returns the arg string.
- shell: exit on Ctrl-D/EOF; $ prompt over a clean read loop.
- tools (c/): echo (argv), cat (stdin->stdout to EOF), uname, pid (decimal
  print), true, false. Each built to a ROM-bank blob and registered.
- Makefile: CBLOBS list builds all C programs.
- README: document libc + the tool set.
---
 include/gbos.inc | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'include')

diff --git a/include/gbos.inc b/include/gbos.inc
index 9f6a98a..01d7f1a 100644
--- a/include/gbos.inc
+++ b/include/gbos.inc
@@ -92,6 +92,12 @@ DEF SYS_MAX     EQU 12
 DEF PROG_WORKER EQU 0
 DEF PROG_SH     EQU 1
 DEF PROG_HELLO  EQU 2
-DEF PROG_CHELLO EQU 3   ; a C program (compiled with SDCC), see c/
+DEF PROG_CHELLO EQU 3   ; C programs (compiled with SDCC), see c/
+DEF PROG_ECHO   EQU 4
+DEF PROG_TRUE   EQU 5
+DEF PROG_FALSE  EQU 6
+DEF PROG_UNAME  EQU 7
+DEF PROG_PID    EQU 8
+DEF PROG_CAT    EQU 9
 
     ENDC
-- 
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