From 2c0efd93530c472e96ff3529aee983b53f3b78d9 Mon Sep 17 00:00:00 2001 From: Nathan Lee Date: Wed, 12 Aug 2026 17:44:17 -0500 Subject: rework project structure --- kernel/common/elf.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 kernel/common/elf.c (limited to 'kernel/common/elf.c') diff --git a/kernel/common/elf.c b/kernel/common/elf.c new file mode 100644 index 0000000..871eee7 --- /dev/null +++ b/kernel/common/elf.c @@ -0,0 +1,40 @@ +#include + +int elf_chk_header(struct elf_header *header) { + uint32_t magic_chk; + memcpy(&magic_chk, header->e_ident, sizeof(uint32_t)); + if (magic_chk != ltohi(ELF_MAGIC_LE)) { + return -1; + } + + if (header->e_ident[EI_CLASS] != ELFHOSTCLASS) { + return -1; + } + + if (header->e_ident[EI_DATA] != ELFHOSTDATA) { + return -1; + } + + if (header->e_ident[EI_VERSION] != EV_CURRENT) { + return -1; + } + + return 0; +} + +struct elf_section_header *elf_get_section(struct elf_header *hdr, void *data, uint32_t index) { + uint8_t *base = (uint8_t *)data; + + if (index >= hdr->e_shnum) { + return 0; + } + + return (struct elf_section_header *)(base + + hdr->e_shoff + + index * hdr->e_shentsize); +} + +char *elf_get_section_name(struct elf_header *hdr, struct elf_section_header *section, void *data) { + struct elf_section_header *shstrtab = elf_get_section(hdr, data, hdr->e_shstrndx); + return (char *)((uintptr_t)section->sh_name + (uintptr_t)shstrtab->sh_offset + (uintptr_t)data); +} -- cgit v1.2.3