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https://github.com/limine-bootloader/limine
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Add function to load elf sections by name
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@ -13,10 +13,10 @@
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#define BITS_LE 0x01
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/* Indices into identification array */
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#define EI_CLASS 4
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#define EI_DATA 5
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#define EI_VERSION 6
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#define EI_OSABI 7
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#define EI_CLASS 4
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#define EI_DATA 5
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#define EI_VERSION 6
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#define EI_OSABI 7
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struct elf_hdr {
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uint8_t ident[16];
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@ -46,6 +46,39 @@ struct elf_phdr {
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uint64_t p_align;
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};
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struct elf_shdr {
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uint32_t sh_name;
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uint32_t sh_type;
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uint64_t sh_flags;
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uint64_t sh_addr;
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uint64_t sh_offset;
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uint64_t sh_size;
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uint32_t sh_link;
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uint32_t sh_info;
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uint64_t sh_addralign;
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uint64_t sh_entsize;
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};
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int load_section(struct echfs_file_handle *fd, void *buffer, char *name) {
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struct elf_hdr hdr;
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echfs_read(fd, &hdr, 0, sizeof(struct elf_hdr));
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struct elf_shdr sections[hdr.sh_num];
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echfs_read(fd, sections, hdr.shoff, hdr.sh_num * sizeof(struct elf_shdr));
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char names[sections[hdr.shstrndx].sh_size];
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echfs_read(fd, names, sections[hdr.shstrndx].sh_offset, sections[hdr.shstrndx].sh_size);
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for (uint16_t i = 0; i < hdr.sh_num; i++) {
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if(!strcmp(&names[sections[i].sh_name], name)) {
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echfs_read(fd, buffer, sections[i].sh_offset, sections[i].sh_size);
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return 0;
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}
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}
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return 1;
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}
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#define FIXED_HIGHER_HALF_OFFSET ((uint64_t)0xffffffff80000000)
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int elf_load(struct echfs_file_handle *fd, uint64_t *entry_point) {
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@ -5,5 +5,6 @@
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#include <fs/echfs.h>
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int elf_load(struct echfs_file_handle *fd, uint64_t *entry_point);
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void load_section(struct echfs_file_handle *fd, void *buffer, char *name);
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#endif
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