import

1 files changed, 43 insertions, 0 deletions

diff --git a/elf.h b/elf.h
new file mode 100644
index 0000000..ea9f964
--- /dev/null
+++ b/elf.h
@@ -0,0 +1,43 @@
+#ifndef JOS_INC_ELF_H
+#define JOS_INC_ELF_H
+
+#define ELF_MAGIC 0x464C457FU	/* "\x7FELF" in little endian */
+
+struct Elf {
+	uint32_t e_magic;	// must equal ELF_MAGIC
+	uint8_t e_elf[12];
+	uint16_t e_type;
+	uint16_t e_machine;
+	uint32_t e_version;
+	uint32_t e_entry;
+	uint32_t e_phoff;
+	uint32_t e_shoff;
+	uint32_t e_flags;
+	uint16_t e_ehsize;
+	uint16_t e_phentsize;
+	uint16_t e_phnum;
+	uint16_t e_shentsize;
+	uint16_t e_shnum;
+	uint16_t e_shstrndx;
+};
+
+struct Proghdr {
+	uint32_t p_type;
+	uint32_t p_offset;
+	uint32_t p_va;
+	uint32_t p_pa;
+	uint32_t p_filesz;
+	uint32_t p_memsz;
+	uint32_t p_flags;
+	uint32_t p_align;
+};
+
+// Values for Proghdr::p_type
+#define ELF_PROG_LOAD		1
+
+// Flag bits for Proghdr::p_flags
+#define ELF_PROG_FLAG_EXEC	1
+#define ELF_PROG_FLAG_WRITE	2
+#define ELF_PROG_FLAG_READ	4
+
+#endif /* !JOS_INC_ELF_H */