add usermode jump into init

1 files changed, 68 insertions, 0 deletions

diff --git a/arch/x86_64/lib/elf.h b/arch/x86_64/lib/elf.h
new file mode 100644
index 0000000..fae2255
--- /dev/null
+++ b/arch/x86_64/lib/elf.h
@@ -0,0 +1,68 @@
+#ifndef _JOVE_LIB_ELF_H
+#define _JOVE_LIB_ELF_H 1
+
+#include <stdint.h>
+
+#define EI_MAG0 0x7F
+#define EI_MAG1 0x45
+#define EI_MAG2 0x4C
+#define EI_MAG3 0x46
+
+#define EI_CLASS_64 2
+#define EI_DATA_LE 1
+
+#define ET_EXEC 0x02
+#define EM_x86_64 0x3E
+
+struct elf_header
+{
+    uint8_t e_ident[16];
+    uint16_t e_type;
+    uint16_t e_machine;
+    uint32_t e_version;
+    uint64_t e_entry;
+    uint64_t e_phoff;
+    uint64_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 elf_phdr
+{
+    uint32_t p_type;
+    uint32_t p_flags;
+    uint64_t p_offset;
+    uint64_t p_vaddr;
+    uint64_t p_paddr;
+    uint64_t p_filesz;
+    uint64_t p_memsz;
+    uint64_t p_align;
+};
+
+#define SHT_PROGBITS 1
+#define SHT_NOBITS 4
+
+#define SHF_WRITE 0x1
+#define SHF_ALLOC 0x2
+#define SHF_EXECINSTR 0x4
+
+struct elf_shdr
+{
+    uint32_t sh_name;
+    uint32_t sh_type;
+    uint64_t sh_flags;
+    uint64_t sh_addr;
+    uint64_t sh_offset;
+    uint64_t sh_size;
+    uint32_t sh_link;
+    uint32_t sh_info;
+    uint64_t sh_addralign;
+    uint64_t sh_entsize;
+};
+
+#endif