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Fix section loading function

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This commit is contained in:
Matteo Semenzato 2020-03-25 23:57:10 +01:00
parent ee8e1b330e
commit 80ad7466fd
2 changed files with 13 additions and 8 deletions
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19
src/lib/elf.c
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@ -59,19 +59,24 @@ struct elf_shdr {
uint64_t sh_entsize;
};
int load_section(struct echfs_file_handle *fd, void *buffer, char *name) {
int elf_load_section(struct echfs_file_handle *fd, void *buffer, const char *name) {
struct elf_hdr hdr;
echfs_read(fd, &hdr, 0, sizeof(struct elf_hdr));
struct elf_shdr sections[hdr.sh_num];
echfs_read(fd, sections, hdr.shoff, hdr.sh_num * sizeof(struct elf_shdr));
struct elf_shdr shstrtab;
echfs_read(fd, &shstrtab, hdr.shoff + hdr.shstrndx * sizeof(struct elf_shdr),
sizeof(struct elf_shdr));
char names[sections[hdr.shstrndx].sh_size];
echfs_read(fd, names, sections[hdr.shstrndx].sh_offset, sections[hdr.shstrndx].sh_size);
char names[shstrtab.sh_size];
echfs_read(fd, names, shstrtab.sh_offset, shstrtab.sh_size);
for (uint16_t i = 0; i < hdr.sh_num; i++) {
if(!strcmp(&names[sections[i].sh_name], name)) {
echfs_read(fd, buffer, sections[i].sh_offset, sections[i].sh_size);
struct elf_shdr section;
echfs_read(fd, &section, hdr.shoff + i * sizeof(struct elf_shdr),
sizeof(struct elf_shdr));
if (!strcmp(&names[section.sh_name], name)) {
echfs_read(fd, buffer, section.sh_offset, section.sh_size);
return 0;
}
}

2
src/lib/elf.h
View File

@ -5,6 +5,6 @@
#include <fs/echfs.h>
int elf_load(struct echfs_file_handle *fd, uint64_t *entry_point);
void load_section(struct echfs_file_handle *fd, void *buffer, char *name);
int elf_load_section(struct echfs_file_handle *fd, void *buffer, const char *name);
#endif