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#include <assert.h>
#include <def.h>
#include <elf.h>
#include <fs.h>
#include <mem.h>
#include <str.h>
int elf_verify(struct elf_header *h)
{
return (h->ident[0] == ELF_MAG && !strncmp((char *)&h->ident[1], "ELF", 3) &&
h->ident[4] == ELF_32 && h->ident[5] == ELF_LITTLE && h->ident[6] == ELF_CURRENT &&
h->machine == ELF_386 && (h->type == ET_REL || h->type == ET_EXEC));
}
void elf_load(char *path)
{
u32 *data = read_file(path);
struct elf_header *h = (struct elf_header *)data;
assert(elf_verify(h));
struct elf_program_header *p = (struct elf_program_header *)((u32)data + h->phoff);
struct elf_program_header *p_end =
(struct elf_program_header *)((u32)p + (h->phentsize * h->phnum));
u32 offset = (p->vaddr - p->paddr);
while (p < p_end) {
printf("\nheader: 0x%x\n", p->paddr);
printf("filesz: %d\n", p->filesz);
/* memcpy(p->paddr, (u32)data + p->offset, p->filesz); */
memcpy((u32 *)p->paddr, (u32 *)((u32)data + p->offset), p->filesz);
p++;
}
void (*entry)();
entry = (void (*)())(h->entry - offset);
entry();
}
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