add process init chapter

Add chapter on process initialization.
Add program to visualize data provided by the Linux Kernel as
specified in the SysV ABI.
Add utils for syscalls and printing + tests.

1 files changed, 26 insertions, 0 deletions

diff --git a/include/elf.h b/include/elf.h
new file mode 100644
index 0000000..7e279fe
--- /dev/null
+++ b/include/elf.h
@@ -0,0 +1,26 @@
+// Copyright (c) 2020 Johannes Stoelp
+
+#pragma once
+
+#include <bits/stdint-uintn.h>
+#include <stdint.h>
+
+enum eAuxvTag {
+    AT_NULL   =  0, /* ignored */
+    AT_IGNORE =  1, /* ignored */
+    AT_EXECFD =  2, /* val */
+    AT_PHDR   =  3, /* ptr */
+    AT_PHENT  =  4, /* val */
+    AT_PHNUM  =  5, /* val */
+    AT_PAGESZ =  6, /* val */
+    AT_BASE   =  7, /* ptr */
+    AT_FLAGS  =  8, /* val */
+    AT_ENTRY  =  9, /* ptr */
+    AT_NOTELF = 10, /* val */
+    AT_UID    = 11, /* val */
+    AT_EUID   = 12, /* val */
+    AT_GID    = 13, /* val */
+    AT_EGID   = 14, /* val */
+
+    AT_MAX_CNT,
+};