refactor: elf parsing utility and exec related

[lunaix-os.git] / lunaix-os / includes / lunaix / exec.h

diff --git a/lunaix-os/includes/lunaix/exec.h b/lunaix-os/includes/lunaix/exec.h
new file mode 100644 (file)
index 0000000..00f4d39
--- /dev/null
+++ b/lunaix-os/includes/lunaix/exec.h
@@ -0,0 +1,67 @@
+#ifndef __LUNAIX_EXEC_H
+#define __LUNAIX_EXEC_H
+
+#include <lunaix/elf.h>
+#include <lunaix/fs.h>
+#include <lunaix/process.h>
+#include <lunaix/types.h>
+
+#define NO_LOADER 0
+#define DEFAULT_LOADER "usr/ld"
+
+#define MAX_VAR_PAGES 8
+#define DEFAULT_HEAP_PAGES 16
+
+struct exec_context;
+
+struct load_context
+{
+    struct exec_container* container;
+    ptr_t base;
+    ptr_t end;
+    ptr_t mem_sz;
+
+    ptr_t entry;
+};
+
+struct exec_container
+{
+    struct proc_info* proc;
+    ptr_t vms_mnt;
+
+    struct load_context executable;
+
+    ptr_t stack_top;
+    ptr_t entry; // mapped to one of {executable|loader}.entry
+
+    int status;
+};
+
+struct uexec_param
+{
+    int argc;
+    char** argv;
+    int envc;
+    char** envp;
+} PACKED;
+
+#ifndef __USR_WRAPPER__
+
+int
+exec_load_byname(struct exec_container* container,
+                 const char* filename,
+                 const char** argv,
+                 const char** envp);
+
+int
+exec_load(struct exec_container* container,
+          struct v_file* executable,
+          const char** argv,
+          const char** envp);
+
+int
+exec_kexecve(const char* filename, const char* argv[], const char* envp);
+
+#endif
+
+#endif /* __LUNAIX_LOADER_H */