feat(user): add user-space build system and init process to test fork/wait

1 files changed, 29 insertions, 0 deletions

diff --git a/include/user/user.h b/include/user/user.h
new file mode 100644
index 0000000..7ab4923
--- /dev/null
+++ b/include/user/user.h
@@ -0,0 +1,29 @@
+#pragma once
+typedef unsigned long long uint64;
+
+extern "C" {
+    int fork();
+    int exit(int status);
+    int wait(uint64 status_addr);
+    int pipe(int p[]);
+    int write(int fd, const void *buf, int n);
+    int read(int fd, void *buf, int n);
+    int close(int fd);
+    int kill(int pid);
+    int exec(char *, char **);
+    int open(const char *, int);
+    int mknod(const char *, short, short);
+    int unlink(const char *);
+    int fstat(int fd, void *st);
+    int link(const char *, const char *);
+    int mkdir(const char *);
+    int chdir(const char *);
+    int dup(int fd);
+    int getpid();
+    char *sbrk(int n);
+    int sleep(int ticks);
+    int uptime();
+
+    
+    void putc(char c);
+}
\ No newline at end of file