Load ELF file with bootloader instead of flat binary

src/boot/elf.h

@@ -0,0 +1,77 @@
+#pragma once
+#include <stdint.h>
+
+#ifndef ELF_VERSION
+#define ELF_VERSION 1
+#endif
+
+#ifndef ELF_WORDSIZE
+#define ELF_WORDSIZE 2
+#endif
+
+#ifndef ELF_ENDIAN
+#define ELF_ENDIAN 1
+#endif
+
+#ifndef ELF_OSABI
+#define ELF_OSABI 0
+#endif
+
+#ifndef ELF_MACHINE
+#define ELF_MACHINE 0x3e
+#endif
+
+const unsigned ELF_PT_LOAD = 1;
+
+struct elf_ident
+{
+	char magic[4];
+
+	uint8_t word_size;
+	uint8_t endianness;
+	uint8_t version;
+	uint8_t os_abi;
+
+	uint64_t reserved;
+} __attribute__ ((packed));
+
+struct elf_header
+{
+	struct elf_ident ident;
+
+	uint16_t type;
+	uint16_t machine;
+
+	uint32_t version;
+
+	uint64_t entrypoint;
+	uint64_t ph_offset;
+	uint64_t sh_offset;
+
+	uint32_t flags;
+
+	uint16_t eh_size;
+
+	uint16_t ph_entsize;
+	uint16_t ph_num;
+
+	uint16_t sh_entsize;
+	uint16_t sh_num;
+
+	uint16_t sh_str_idx;
+} __attribute__ ((packed));
+
+struct elf_program_header
+{
+	uint32_t type;
+	uint32_t flags;
+	uint64_t offset;
+
+	uint64_t vaddr;
+	uint64_t paddr;
+
+	uint64_t file_size;
+	uint64_t mem_size;
+
+	uint64_t align;
+} __attribute__ ((packed));