build system refresh

rlibc/include/syscall.h

@@ -0,0 +1,46 @@
+#ifndef RLIBC_SYSCALL_H
+#define RLIBC_SYSCALL_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+#define SYS_EXIT    1
+#define SYS_READ    3
+#define SYS_WRITE   4
+#define SYS_OPEN    5
+#define SYS_CLOSE   6
+#define SYS_BRK     12
+#define SYS_SBRK    13
+#define SYS_PTY     20
+#define SYS_FORK    21
+#define SYS_EXEC    22
+#define SYS_DUP2    23
+#define SYS_LSEEK   24
+#define SYS_WAIT    25
+#define SYS_MMAP    26
+#define SYS_IOCTL   27
+
+int open(const char* path);
+int write(int fd, const void *buf, size_t count);
+int read(int fd, void *buf, size_t count);
+int close(int fd);
+
+int lseek(int fd, size_t offset, int whence);
+
+void* mmap(int fd);
+
+void exit(int status) __attribute__((noreturn));
+
+void* sbrk(int32_t increment);
+int brk(void *addr);
+
+int pty(int* slave);
+
+int fork();
+int exec(const char* path);
+int dup2(int src, int dst);
+int waitpid(int pid, int* status);
+
+int ioctl(int fd, uint32_t request, void* arg);
+
+#endif