From a82ab8ad6d277ededc128678aebabf5fbdb01c45 Mon Sep 17 00:00:00 2001
From: Richard Qin <richard.qin.x@gmail.com>
Date: Sun, 28 Dec 2025 00:48:24 +0800
Subject: feat(syscall): Implement syscall dispatch and process lifecycle
 (exit/wait/sleep)

---
 include/kernel/proc.h     | 12 ++++++++++--
 include/kernel/spinlock.h | 20 ++++++++++++++++++++
 include/kernel/syscall.h  | 26 ++++++++++++++++++++++++++
 include/lib/string.h      | 13 +++++++++++++
 4 files changed, 69 insertions(+), 2 deletions(-)
 create mode 100644 include/kernel/spinlock.h
 create mode 100644 include/kernel/syscall.h
 create mode 100644 include/lib/string.h

(limited to 'include')

diff --git a/include/kernel/proc.h b/include/kernel/proc.h
index 559b137..b557267 100644
--- a/include/kernel/proc.h
+++ b/include/kernel/proc.h
@@ -1,6 +1,7 @@
 #pragma once
 #include "common/types.h"
 #include "kernel/trap.h"
+#include "kernel/spinlock.h"
 
 struct Context
 {
@@ -44,7 +45,9 @@ struct Proc
     char name[16];
     uint64 sz;
 
-    //
+    struct Proc *parent;
+    void *chan;
+    int xstate;
 };
 
 
@@ -57,8 +60,13 @@ namespace ProcManager
     void create_kernel_thread(void (*func)(), const char *name);
 
     void user_init();
+    void exit(int status);
+    int wait(uint64 addr);
+    void sleep(void *chan, struct spinlock *lk);
+    void wakeup(void *chan);
 }
 
 void forkret();
 struct Proc *myproc();
-void usertrapret();
\ No newline at end of file
+void usertrapret();
+int fork();
\ No newline at end of file
diff --git a/include/kernel/spinlock.h b/include/kernel/spinlock.h
new file mode 100644
index 0000000..aec4b6a
--- /dev/null
+++ b/include/kernel/spinlock.h
@@ -0,0 +1,20 @@
+#pragma once
+#include "common/types.h"
+
+struct spinlock
+{
+    uint locked;
+
+    char *name;
+    int cpu_id;
+};
+
+namespace Spinlock
+{
+    void init(struct spinlock *lk, char *name);
+    void acquire(struct spinlock *lk);
+    void release(struct spinlock *lk);
+    int holding(struct spinlock *lk);
+    void push_off();
+    void pop_off();
+}
\ No newline at end of file
diff --git a/include/kernel/syscall.h b/include/kernel/syscall.h
new file mode 100644
index 0000000..571741e
--- /dev/null
+++ b/include/kernel/syscall.h
@@ -0,0 +1,26 @@
+#pragma once
+
+#define SYS_putc    1
+#define SYS_fork    2
+#define SYS_exit    3
+#define SYS_wait    4
+#define SYS_pipe    5
+#define SYS_read    6
+#define SYS_kill    7
+#define SYS_exec    8
+#define SYS_fstat   9
+#define SYS_chdir   10
+#define SYS_dup     11
+#define SYS_getpid  12
+#define SYS_sbrk    13
+#define SYS_sleep   14
+#define SYS_uptime  15
+#define SYS_open    16
+#define SYS_write   17
+#define SYS_mknod   18
+#define SYS_unlink  19
+#define SYS_link    20
+#define SYS_mkdir   21
+#define SYS_close   22
+
+void syscall();
\ No newline at end of file
diff --git a/include/lib/string.h b/include/lib/string.h
new file mode 100644
index 0000000..aa87489
--- /dev/null
+++ b/include/lib/string.h
@@ -0,0 +1,13 @@
+#pragma once
+#include "common/types.h"
+
+
+void *memset(void *dst, int c, uint n);
+int memcmp(const void *v1, const void *v2, uint n);
+void *memmove(void *dst, const void *src, uint n);
+void *memcpy(void *dst, const void *src, uint n);
+
+
+void strcpy(char *dst, const char *src);
+int strlen(const char *s);
+int strcmp(const char *s1, const char *s2);
\ No newline at end of file
-- 
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