diff options
Diffstat (limited to 'src/stem/linker/elf.c')
-rw-r--r-- | src/stem/linker/elf.c | 44 |
1 files changed, 0 insertions, 44 deletions
diff --git a/src/stem/linker/elf.c b/src/stem/linker/elf.c deleted file mode 100644 index dc7481b..0000000 --- a/src/stem/linker/elf.c +++ /dev/null @@ -1,44 +0,0 @@ -#include "elf.h" -#include <mem/paging.h> -#include <mem/seg.h> -#include <stdlib.h> -#include <core/sys.h> - -int elf_check(uint8_t *data) { - struct elf_ehdr *h = (struct elf_ehdr*)data; - if (h->e_ident[0] == 0x7F && h->e_ident[1] == 'E' && h->e_ident[2] == 'L' && h->e_ident[3] == 'F') return 0; - return 1; -} - -thread_entry elf_load(uint8_t *data, struct process* process) { - struct elf_ehdr *ehdr = (struct elf_ehdr*)data; - struct elf_phdr *phdr; - int i; - if (elf_check(data)) return 0; - - pagedir_switch(process->pagedir); - - phdr = (struct elf_phdr*)((uint8_t*)(data + ehdr->e_phoff)); - for (i = 0; i < ehdr->e_phnum; i++) { - if (phdr[i].p_type == PT_LOAD) { - seg_map(simpleseg_make(phdr[i].p_vaddr, phdr[i].p_memsz, (phdr[i].p_flags & PF_W) != 0), process->pagedir); - memcpy((uint8_t*)phdr[i].p_vaddr, data + phdr[i].p_offset, phdr[i].p_filesz); - if (phdr[i].p_memsz > phdr[i].p_filesz) { - memset((uint8_t*)phdr[i].p_vaddr + phdr[i].p_memsz, 0, phdr[i].p_memsz - phdr[i].p_filesz); - } - } - } - return (thread_entry)ehdr->e_entry; -} - -struct process* elf_exec(uint8_t *data) { - if (elf_check(data)) return 0; - - struct process* p = process_new(0, 0, PL_DRIVER); - - thread_entry e = elf_load(data, p); - - thread_new(p, e, 0); - - return p; -} |