Added an elf loader

3 files changed, 30 insertions, 3 deletions

diff --git a/include/elf.h b/include/elf.h
index 76d4c23..e1d65e1 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -14,8 +14,16 @@ struct elf_header {
 	unsigned long magic;
 	unsigned char bits, endianess, elf_header_version, abi_version;
 	unsigned long long unused;
-	unsigned short short type, opcode_set;
-	unsigned long elf_version, entry_posititon;
-};
+	unsigned short type, opcode_set;
+	unsigned long elf_version, entry_posititon, program_header_tbl_offset, section_header_tbl_offset;
+	unsigned long flags;
+	unsigned short header_size, program_header_entry_size, program_header_entry_count, section_header_size, section_header_count, section_header_name_index;
+
+} __attribute__((packed));
+
+struct elf_program_header_entry {
+	unsigned long type, p_offset, vaddr, reserved, filesize, memsize, flags, alignment;
+
+} __attribute__((packed));
 
 #endif /* INCLUDE_ELF_H_ */
diff --git a/include/task.h b/include/task.h
index 1534f63..f6e9a65 100644
--- a/include/task.h
+++ b/include/task.h
@@ -16,6 +16,11 @@ struct task_t {
 	struct cpu_state *state;
 	void **pagelist;
 	long pagelistCounter;
+	int parent_pid;
+	int forkspace_pid; /** Forkspace describes a process that was fork()ed but has the same
+		base code stuff (i.e. exec() or simmelar was not run yet)
+		we have to copy the new pages over in order to make fork() work. Now this is probably
+		resource intensive */
 	struct task_t *next;
 };
 
diff --git a/include/utils.h b/include/utils.h
new file mode 100644
index 0000000..296a3fa
--- /dev/null
+++ b/include/utils.h
@@ -0,0 +1,14 @@
+/*
+ * utils.h
+ *
+ *  Created on: 01.11.2022
+ *      Author: maite
+ */
+
+#ifndef INCLUDE_UTILS_H_
+#define INCLUDE_UTILS_H_
+
+extern void kmemcpy(void *dest, void *src, int n);
+extern void kmemset(void *dest, unsigned char val, int n);
+
+#endif /* INCLUDE_UTILS_H_ */