From 1d2a6f21294f8390b683e4e097cb49210ed832d1 Mon Sep 17 00:00:00 2001
From: johannst <johannes.stoelp@gmail.com>
Date: Fri, 26 Mar 2021 23:17:46 +0100
Subject: Added dyn allocator + syscall wrappers + minor fixes.

---
 lib/src/syscalls.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 lib/src/syscalls.c

(limited to 'lib/src/syscalls.c')

diff --git a/lib/src/syscalls.c b/lib/src/syscalls.c
new file mode 100644
index 0000000..d6ac1a5
--- /dev/null
+++ b/lib/src/syscalls.c
@@ -0,0 +1,22 @@
+// Copyright (c) 2021 Johannes Stoelp
+
+#include <asm/unistd.h>  // __NR_*
+#include <syscall.h>
+#include <syscalls.h>
+
+int open(const char* path, int flags) {
+    return syscall2(__NR_open, path, flags);
+}
+
+ssize_t read(int fd, void* buf, size_t count) {
+    return syscall3(__NR_read, fd, buf, count);
+}
+
+off_t lseek(int fd, off_t offset, int whence) {
+    return syscall3(__NR_lseek, fd, offset, whence);
+}
+
+void _exit(int status) {
+    syscall1(__NR_exit, status);
+    __builtin_unreachable();
+}
-- 
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