From 1c8e37f63d413a559825020289178d442537449e Mon Sep 17 00:00:00 2001
From: Richard Qin <richard.qin.x@gmail.com>
Date: Fri, 2 Jan 2026 10:09:37 +0800
Subject: dev(sell): add simple libc and implement shell please see the log for
 detail.

---
 src/user/usys.S | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

(limited to 'src/user/usys.S')

diff --git a/src/user/usys.S b/src/user/usys.S
index 65937cc..f85917e 100644
--- a/src/user/usys.S
+++ b/src/user/usys.S
@@ -7,8 +7,16 @@
         ecall; \
         ret
 
+#define SYSCALL_NAME(name, sysname) \
+    .global name; \
+    name: \
+        li a7, SYS_ ## sysname; \
+        ecall; \
+        ret
+
+SYSCALL_NAME(sys_exit, exit) 
+
 SYSCALL(fork)
-SYSCALL(exit)
 SYSCALL(wait)
 SYSCALL(pipe)
 SYSCALL(read)
@@ -29,4 +37,5 @@ SYSCALL(sbrk)
 SYSCALL(sleep)
 SYSCALL(uptime)
 SYSCALL(putc)
-SYSCALL(disk_test)
\ No newline at end of file
+SYSCALL(disk_test)
+SYSCALL(lseek)
\ No newline at end of file
-- 
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