C++ (Cpp) call_ifunc_resolver示例

示例#1

文件： reloc.c 项目： 2trill2spill/freebsd

int
reloc_iresolve(Obj_Entry *obj, RtldLockState *lockstate)
{
    const Elf_Rela *relalim;
    const Elf_Rela *rela;

    if (!obj->irelative)
	return (0);
    relalim = (const Elf_Rela *)((char *)obj->pltrela + obj->pltrelasize);
    for (rela = obj->pltrela;  rela < relalim;  rela++) {
	Elf_Addr *where, target, *ptr;

	switch (ELF_R_TYPE(rela->r_info)) {
	case R_X86_64_JMP_SLOT:
	  break;

	case R_X86_64_IRELATIVE:
	  ptr = (Elf_Addr *)(obj->relocbase + rela->r_addend);
	  where = (Elf_Addr *)(obj->relocbase + rela->r_offset);
	  lock_release(rtld_bind_lock, lockstate);
	  target = call_ifunc_resolver(ptr);
	  wlock_acquire(rtld_bind_lock, lockstate);
	  *where = target;
	  break;
	}
    }
    obj->irelative = false;
    return (0);
}

示例#2

文件： reloc.c 项目： FreeBSDFoundation/freebsd

int
reloc_iresolve(Obj_Entry *obj, struct Struct_RtldLockState *lockstate)
{
	const Elf_Rela *relalim;
	const Elf_Rela *rela;
	Elf_Addr *where, target, *ptr;

	if (!obj->irelative)
		return (0);
	relalim = (const Elf_Rela *)((const char *)obj->pltrela + obj->pltrelasize);
	for (rela = obj->pltrela;  rela < relalim;  rela++) {
		if (ELF_R_TYPE(rela->r_info) == R_AARCH64_IRELATIVE) {
			ptr = (Elf_Addr *)(obj->relocbase + rela->r_addend);
			where = (Elf_Addr *)(obj->relocbase + rela->r_offset);
			lock_release(rtld_bind_lock, lockstate);
			target = call_ifunc_resolver(ptr);
			wlock_acquire(rtld_bind_lock, lockstate);
			*where = target;
		}
	}
	obj->irelative = false;
	return (0);
}

示例#3

文件： reloc.c 项目： 2trill2spill/freebsd

int
reloc_iresolve(Obj_Entry *obj, RtldLockState *lockstate)
{
    const Elf_Rel *rellim;
    const Elf_Rel *rel;
    Elf_Addr *where, target;

    if (!obj->irelative)
	return (0);
    rellim = (const Elf_Rel *)((char *)obj->pltrel + obj->pltrelsize);
    for (rel = obj->pltrel;  rel < rellim;  rel++) {
	switch (ELF_R_TYPE(rel->r_info)) {
	case R_386_IRELATIVE:
	  where = (Elf_Addr *)(obj->relocbase + rel->r_offset);
	  lock_release(rtld_bind_lock, lockstate);
	  target = call_ifunc_resolver(obj->relocbase + *where);
	  wlock_acquire(rtld_bind_lock, lockstate);
	  *where = target;
	  break;
	}
    }
    obj->irelative = false;
    return (0);
}