1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 1994-1996 Søren Schmidt 5 * Copyright (c) 2018 Turing Robotic Industries Inc. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #define __ELF_WORD_SIZE 64 30 31 #include <sys/param.h> 32 #include <sys/elf.h> 33 #include <sys/exec.h> 34 #include <sys/imgact.h> 35 #include <sys/imgact_elf.h> 36 #include <sys/kernel.h> 37 #include <sys/ktr.h> 38 #include <sys/lock.h> 39 #include <sys/module.h> 40 #include <sys/mutex.h> 41 #include <sys/proc.h> 42 #include <sys/stddef.h> 43 #include <sys/syscallsubr.h> 44 #include <sys/sysctl.h> 45 #include <sys/sysent.h> 46 47 #include <vm/pmap.h> 48 #include <vm/vm.h> 49 #include <vm/vm_map.h> 50 #include <vm/vm_page.h> 51 52 #include <arm64/linux/linux.h> 53 #include <arm64/linux/linux_proto.h> 54 #include <compat/linux/linux_elf.h> 55 #include <compat/linux/linux_emul.h> 56 #include <compat/linux/linux_fork.h> 57 #include <compat/linux/linux_ioctl.h> 58 #include <compat/linux/linux_mib.h> 59 #include <compat/linux/linux_misc.h> 60 #include <compat/linux/linux_signal.h> 61 #include <compat/linux/linux_util.h> 62 #include <compat/linux/linux_vdso.h> 63 64 #include <arm64/linux/linux_sigframe.h> 65 66 #include <machine/md_var.h> 67 #include <machine/pcb.h> 68 #ifdef VFP 69 #include <machine/vfp.h> 70 #endif 71 72 MODULE_VERSION(linux64elf, 1); 73 74 #define LINUX_VDSOPAGE_SIZE PAGE_SIZE * 2 75 #define LINUX_VDSOPAGE (VM_MAXUSER_ADDRESS - \ 76 LINUX_VDSOPAGE_SIZE) 77 #define LINUX_SHAREDPAGE (LINUX_VDSOPAGE - PAGE_SIZE) 78 /* 79 * PAGE_SIZE - the size 80 * of the native SHAREDPAGE 81 */ 82 #define LINUX_USRSTACK LINUX_SHAREDPAGE 83 #define LINUX_PS_STRINGS (LINUX_USRSTACK - \ 84 sizeof(struct ps_strings)) 85 86 static int linux_szsigcode; 87 static vm_object_t linux_vdso_obj; 88 static char *linux_vdso_mapping; 89 extern char _binary_linux_vdso_so_o_start; 90 extern char _binary_linux_vdso_so_o_end; 91 static vm_offset_t linux_vdso_base; 92 93 extern struct sysent linux_sysent[LINUX_SYS_MAXSYSCALL]; 94 extern const char *linux_syscallnames[]; 95 96 SET_DECLARE(linux_ioctl_handler_set, struct linux_ioctl_handler); 97 98 static void linux_vdso_install(const void *param); 99 static void linux_vdso_deinstall(const void *param); 100 static void linux_vdso_reloc(char *mapping, Elf_Addr offset); 101 static void linux_set_syscall_retval(struct thread *td, int error); 102 static int linux_fetch_syscall_args(struct thread *td); 103 static void linux_exec_setregs(struct thread *td, struct image_params *imgp, 104 uintptr_t stack); 105 static void linux_exec_sysvec_init(void *param); 106 static int linux_on_exec_vmspace(struct proc *p, 107 struct image_params *imgp); 108 109 LINUX_VDSO_SYM_CHAR(linux_platform); 110 LINUX_VDSO_SYM_INTPTR(kern_timekeep_base); 111 LINUX_VDSO_SYM_INTPTR(__user_rt_sigreturn); 112 113 static int 114 linux_fetch_syscall_args(struct thread *td) 115 { 116 struct proc *p; 117 struct syscall_args *sa; 118 register_t *ap; 119 120 p = td->td_proc; 121 ap = td->td_frame->tf_x; 122 sa = &td->td_sa; 123 124 sa->code = td->td_frame->tf_x[8]; 125 sa->original_code = sa->code; 126 /* LINUXTODO: generic syscall? */ 127 if (sa->code >= p->p_sysent->sv_size) 128 sa->callp = &p->p_sysent->sv_table[0]; 129 else 130 sa->callp = &p->p_sysent->sv_table[sa->code]; 131 132 if (sa->callp->sy_narg > nitems(sa->args)) 133 panic("ARM64TODO: Could we have more than %zu args?", 134 nitems(sa->args)); 135 memcpy(sa->args, ap, nitems(sa->args) * sizeof(register_t)); 136 137 td->td_retval[0] = 0; 138 return (0); 139 } 140 141 static void 142 linux_set_syscall_retval(struct thread *td, int error) 143 { 144 145 td->td_retval[1] = td->td_frame->tf_x[1]; 146 cpu_set_syscall_retval(td, error); 147 148 if (__predict_false(error != 0)) { 149 if (error != ERESTART && error != EJUSTRETURN) 150 td->td_frame->tf_x[0] = bsd_to_linux_errno(error); 151 } 152 } 153 154 void 155 linux64_arch_copyout_auxargs(struct image_params *imgp, Elf_Auxinfo **pos) 156 { 157 158 AUXARGS_ENTRY((*pos), LINUX_AT_SYSINFO_EHDR, linux_vdso_base); 159 AUXARGS_ENTRY((*pos), LINUX_AT_HWCAP, *imgp->sysent->sv_hwcap); 160 AUXARGS_ENTRY((*pos), LINUX_AT_HWCAP2, *imgp->sysent->sv_hwcap2); 161 AUXARGS_ENTRY((*pos), LINUX_AT_PLATFORM, PTROUT(linux_platform)); 162 } 163 164 /* 165 * Reset registers to default values on exec. 166 */ 167 static void 168 linux_exec_setregs(struct thread *td, struct image_params *imgp, 169 uintptr_t stack) 170 { 171 struct trapframe *regs = td->td_frame; 172 struct pcb *pcb = td->td_pcb; 173 174 memset(regs, 0, sizeof(*regs)); 175 regs->tf_sp = stack; 176 regs->tf_elr = imgp->entry_addr; 177 pcb->pcb_tpidr_el0 = 0; 178 pcb->pcb_tpidrro_el0 = 0; 179 WRITE_SPECIALREG(tpidrro_el0, 0); 180 WRITE_SPECIALREG(tpidr_el0, 0); 181 182 #ifdef VFP 183 vfp_reset_state(td, pcb); 184 #endif 185 186 /* 187 * Clear debug register state. It is not applicable to the new process. 188 */ 189 bzero(&pcb->pcb_dbg_regs, sizeof(pcb->pcb_dbg_regs)); 190 } 191 192 int 193 linux_rt_sigreturn(struct thread *td, struct linux_rt_sigreturn_args *args) 194 { 195 struct l_sigframe *frame; 196 ucontext_t uc; 197 struct trapframe *tf; 198 int error; 199 200 tf = td->td_frame; 201 frame = (struct l_sigframe *)tf->tf_sp; 202 203 if (copyin((void *)&frame->uc, &uc, sizeof(uc))) 204 return (EFAULT); 205 206 error = set_mcontext(td, &uc.uc_mcontext); 207 if (error != 0) 208 return (error); 209 210 /* Restore signal mask. */ 211 kern_sigprocmask(td, SIG_SETMASK, &uc.uc_sigmask, NULL, 0); 212 213 return (EJUSTRETURN); 214 } 215 216 static void 217 linux_rt_sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask) 218 { 219 struct thread *td; 220 struct proc *p; 221 struct trapframe *tf; 222 struct l_sigframe *fp, *frame; 223 struct l_fpsimd_context *fpsimd; 224 struct l_esr_context *esr; 225 l_stack_t uc_stack; 226 ucontext_t uc; 227 uint8_t *scr; 228 struct sigacts *psp; 229 int onstack, sig, issiginfo; 230 231 td = curthread; 232 p = td->td_proc; 233 PROC_LOCK_ASSERT(p, MA_OWNED); 234 235 sig = ksi->ksi_signo; 236 psp = p->p_sigacts; 237 mtx_assert(&psp->ps_mtx, MA_OWNED); 238 239 tf = td->td_frame; 240 onstack = sigonstack(tf->tf_sp); 241 issiginfo = SIGISMEMBER(psp->ps_siginfo, sig); 242 243 CTR4(KTR_SIG, "sendsig: td=%p (%s) catcher=%p sig=%d", td, p->p_comm, 244 catcher, sig); 245 246 /* Allocate and validate space for the signal handler context. */ 247 if ((td->td_pflags & TDP_ALTSTACK) != 0 && !onstack && 248 SIGISMEMBER(psp->ps_sigonstack, sig)) { 249 fp = (struct l_sigframe *)((uintptr_t)td->td_sigstk.ss_sp + 250 td->td_sigstk.ss_size); 251 #if defined(COMPAT_43) 252 td->td_sigstk.ss_flags |= SS_ONSTACK; 253 #endif 254 } else { 255 fp = (struct l_sigframe *)td->td_frame->tf_sp; 256 } 257 258 /* Make room, keeping the stack aligned */ 259 fp--; 260 fp = (struct l_sigframe *)STACKALIGN(fp); 261 262 get_mcontext(td, &uc.uc_mcontext, 0); 263 uc.uc_sigmask = *mask; 264 265 uc_stack.ss_sp = PTROUT(td->td_sigstk.ss_sp); 266 uc_stack.ss_size = td->td_sigstk.ss_size; 267 uc_stack.ss_flags = (td->td_pflags & TDP_ALTSTACK) != 0 ? 268 (onstack ? LINUX_SS_ONSTACK : 0) : LINUX_SS_DISABLE; 269 mtx_unlock(&psp->ps_mtx); 270 PROC_UNLOCK(td->td_proc); 271 272 /* Fill in the frame to copy out */ 273 frame = malloc(sizeof(*frame), M_LINUX, M_WAITOK | M_ZERO); 274 275 memcpy(&frame->sf.sf_uc.uc_sc.regs, tf->tf_x, sizeof(tf->tf_x)); 276 frame->sf.sf_uc.uc_sc.regs[30] = tf->tf_lr; 277 frame->sf.sf_uc.uc_sc.sp = tf->tf_sp; 278 frame->sf.sf_uc.uc_sc.pc = tf->tf_elr; 279 frame->sf.sf_uc.uc_sc.pstate = tf->tf_spsr; 280 frame->sf.sf_uc.uc_sc.fault_address = (register_t)ksi->ksi_addr; 281 282 /* Stack frame for unwinding */ 283 frame->fp = tf->tf_x[29]; 284 frame->lr = tf->tf_elr; 285 286 /* Translate the signal. */ 287 sig = bsd_to_linux_signal(sig); 288 siginfo_to_lsiginfo(&ksi->ksi_info, &frame->sf.sf_si, sig); 289 bsd_to_linux_sigset(mask, &frame->sf.sf_uc.uc_sigmask); 290 291 /* 292 * Prepare fpsimd & esr. Does not check sizes, as 293 * __reserved is big enougth. 294 */ 295 scr = (uint8_t *)&frame->sf.sf_uc.uc_sc.__reserved; 296 #ifdef VFP 297 fpsimd = (struct l_fpsimd_context *) scr; 298 fpsimd->head.magic = L_FPSIMD_MAGIC; 299 fpsimd->head.size = sizeof(struct l_fpsimd_context); 300 fpsimd->fpsr = uc.uc_mcontext.mc_fpregs.fp_sr; 301 fpsimd->fpcr = uc.uc_mcontext.mc_fpregs.fp_cr; 302 303 memcpy(fpsimd->vregs, &uc.uc_mcontext.mc_fpregs.fp_q, 304 sizeof(uc.uc_mcontext.mc_fpregs.fp_q)); 305 scr += roundup(sizeof(struct l_fpsimd_context), 16); 306 #endif 307 if (ksi->ksi_addr != 0) { 308 esr = (struct l_esr_context *) scr; 309 esr->head.magic = L_ESR_MAGIC; 310 esr->head.size = sizeof(struct l_esr_context); 311 esr->esr = tf->tf_esr; 312 } 313 314 memcpy(&frame->sf.sf_uc.uc_stack, &uc_stack, sizeof(uc_stack)); 315 memcpy(&frame->uc, &uc, sizeof(uc)); 316 317 /* Copy the sigframe out to the user's stack. */ 318 if (copyout(frame, fp, sizeof(*fp)) != 0) { 319 /* Process has trashed its stack. Kill it. */ 320 free(frame, M_LINUX); 321 CTR2(KTR_SIG, "sendsig: sigexit td=%p fp=%p", td, fp); 322 PROC_LOCK(p); 323 sigexit(td, SIGILL); 324 } 325 free(frame, M_LINUX); 326 327 tf->tf_x[0]= sig; 328 if (issiginfo) { 329 tf->tf_x[1] = (register_t)&fp->sf.sf_si; 330 tf->tf_x[2] = (register_t)&fp->sf.sf_uc; 331 } else { 332 tf->tf_x[1] = 0; 333 tf->tf_x[2] = 0; 334 } 335 tf->tf_x[29] = (register_t)&fp->fp; 336 tf->tf_elr = (register_t)catcher; 337 tf->tf_sp = (register_t)fp; 338 tf->tf_lr = (register_t)__user_rt_sigreturn; 339 340 CTR3(KTR_SIG, "sendsig: return td=%p pc=%#x sp=%#x", td, tf->tf_elr, 341 tf->tf_sp); 342 343 PROC_LOCK(p); 344 mtx_lock(&psp->ps_mtx); 345 } 346 347 struct sysentvec elf_linux_sysvec = { 348 .sv_size = LINUX_SYS_MAXSYSCALL, 349 .sv_table = linux_sysent, 350 .sv_fixup = __elfN(freebsd_fixup), 351 .sv_sendsig = linux_rt_sendsig, 352 .sv_sigcode = &_binary_linux_vdso_so_o_start, 353 .sv_szsigcode = &linux_szsigcode, 354 .sv_name = "Linux ELF64", 355 .sv_coredump = elf64_coredump, 356 .sv_elf_core_osabi = ELFOSABI_NONE, 357 .sv_elf_core_abi_vendor = LINUX_ABI_VENDOR, 358 .sv_elf_core_prepare_notes = linux64_prepare_notes, 359 .sv_minsigstksz = LINUX_MINSIGSTKSZ, 360 .sv_minuser = VM_MIN_ADDRESS, 361 .sv_maxuser = VM_MAXUSER_ADDRESS, 362 .sv_usrstack = LINUX_USRSTACK, 363 .sv_psstrings = LINUX_PS_STRINGS, 364 .sv_psstringssz = sizeof(struct ps_strings), 365 .sv_stackprot = VM_PROT_READ | VM_PROT_WRITE, 366 .sv_copyout_auxargs = __linuxN(copyout_auxargs), 367 .sv_copyout_strings = __linuxN(copyout_strings), 368 .sv_setregs = linux_exec_setregs, 369 .sv_fixlimit = NULL, 370 .sv_maxssiz = NULL, 371 .sv_flags = SV_ABI_LINUX | SV_LP64 | SV_SHP | SV_SIG_DISCIGN | 372 SV_SIG_WAITNDQ | SV_TIMEKEEP, 373 .sv_set_syscall_retval = linux_set_syscall_retval, 374 .sv_fetch_syscall_args = linux_fetch_syscall_args, 375 .sv_syscallnames = linux_syscallnames, 376 .sv_shared_page_base = LINUX_SHAREDPAGE, 377 .sv_shared_page_len = PAGE_SIZE, 378 .sv_schedtail = linux_schedtail, 379 .sv_thread_detach = linux_thread_detach, 380 .sv_trap = NULL, 381 .sv_hwcap = &elf_hwcap, 382 .sv_hwcap2 = &elf_hwcap2, 383 .sv_onexec = linux_on_exec_vmspace, 384 .sv_onexit = linux_on_exit, 385 .sv_ontdexit = linux_thread_dtor, 386 .sv_setid_allowed = &linux_setid_allowed_query, 387 }; 388 389 static int 390 linux_on_exec_vmspace(struct proc *p, struct image_params *imgp) 391 { 392 int error; 393 394 error = linux_map_vdso(p, linux_vdso_obj, linux_vdso_base, 395 LINUX_VDSOPAGE_SIZE, imgp); 396 if (error == 0) 397 error = linux_on_exec(p, imgp); 398 return (error); 399 } 400 401 /* 402 * linux_vdso_install() and linux_exec_sysvec_init() must be called 403 * after exec_sysvec_init() which is SI_SUB_EXEC (SI_ORDER_ANY). 404 */ 405 static void 406 linux_exec_sysvec_init(void *param) 407 { 408 l_uintptr_t *ktimekeep_base; 409 struct sysentvec *sv; 410 ptrdiff_t tkoff; 411 412 sv = param; 413 /* Fill timekeep_base */ 414 exec_sysvec_init(sv); 415 416 tkoff = kern_timekeep_base - linux_vdso_base; 417 ktimekeep_base = (l_uintptr_t *)(linux_vdso_mapping + tkoff); 418 *ktimekeep_base = sv->sv_shared_page_base + sv->sv_timekeep_offset; 419 } 420 SYSINIT(elf_linux_exec_sysvec_init, SI_SUB_EXEC + 1, SI_ORDER_ANY, 421 linux_exec_sysvec_init, &elf_linux_sysvec); 422 423 static void 424 linux_vdso_install(const void *param) 425 { 426 char *vdso_start = &_binary_linux_vdso_so_o_start; 427 char *vdso_end = &_binary_linux_vdso_so_o_end; 428 429 linux_szsigcode = vdso_end - vdso_start; 430 MPASS(linux_szsigcode <= LINUX_VDSOPAGE_SIZE); 431 432 linux_vdso_base = LINUX_VDSOPAGE; 433 434 __elfN(linux_vdso_fixup)(vdso_start, linux_vdso_base); 435 436 linux_vdso_obj = __elfN(linux_shared_page_init) 437 (&linux_vdso_mapping, LINUX_VDSOPAGE_SIZE); 438 bcopy(vdso_start, linux_vdso_mapping, linux_szsigcode); 439 440 linux_vdso_reloc(linux_vdso_mapping, linux_vdso_base); 441 } 442 SYSINIT(elf_linux_vdso_init, SI_SUB_EXEC + 1, SI_ORDER_FIRST, 443 linux_vdso_install, NULL); 444 445 static void 446 linux_vdso_deinstall(const void *param) 447 { 448 449 __elfN(linux_shared_page_fini)(linux_vdso_obj, 450 linux_vdso_mapping, LINUX_VDSOPAGE_SIZE); 451 } 452 SYSUNINIT(elf_linux_vdso_uninit, SI_SUB_EXEC, SI_ORDER_FIRST, 453 linux_vdso_deinstall, NULL); 454 455 static void 456 linux_vdso_reloc(char *mapping, Elf_Addr offset) 457 { 458 Elf_Size rtype, symidx; 459 const Elf_Rela *rela; 460 const Elf_Shdr *shdr; 461 const Elf_Ehdr *ehdr; 462 Elf_Addr *where; 463 Elf_Addr addr, addend; 464 int i, relacnt; 465 466 MPASS(offset != 0); 467 468 relacnt = 0; 469 ehdr = (const Elf_Ehdr *)mapping; 470 shdr = (const Elf_Shdr *)(mapping + ehdr->e_shoff); 471 for (i = 0; i < ehdr->e_shnum; i++) 472 { 473 switch (shdr[i].sh_type) { 474 case SHT_REL: 475 printf("Linux Aarch64 vDSO: unexpected Rel section\n"); 476 break; 477 case SHT_RELA: 478 rela = (const Elf_Rela *)(mapping + shdr[i].sh_offset); 479 relacnt = shdr[i].sh_size / sizeof(*rela); 480 } 481 } 482 483 for (i = 0; i < relacnt; i++, rela++) { 484 where = (Elf_Addr *)(mapping + rela->r_offset); 485 addend = rela->r_addend; 486 rtype = ELF_R_TYPE(rela->r_info); 487 symidx = ELF_R_SYM(rela->r_info); 488 489 switch (rtype) { 490 case R_AARCH64_NONE: /* none */ 491 break; 492 493 case R_AARCH64_RELATIVE: /* B + A */ 494 addr = (Elf_Addr)(mapping + addend); 495 if (*where != addr) 496 *where = addr; 497 break; 498 default: 499 printf("Linux Aarch64 vDSO: unexpected relocation type %ld, " 500 "symbol index %ld\n", rtype, symidx); 501 } 502 } 503 } 504 505 static Elf_Brandnote linux64_brandnote = { 506 .hdr.n_namesz = sizeof(GNU_ABI_VENDOR), 507 .hdr.n_descsz = 16, 508 .hdr.n_type = 1, 509 .vendor = GNU_ABI_VENDOR, 510 .flags = BN_TRANSLATE_OSREL, 511 .trans_osrel = linux_trans_osrel 512 }; 513 514 static Elf64_Brandinfo linux_glibc2brand = { 515 .brand = ELFOSABI_LINUX, 516 .machine = EM_AARCH64, 517 .compat_3_brand = "Linux", 518 .interp_path = "/lib64/ld-linux-x86-64.so.2", 519 .sysvec = &elf_linux_sysvec, 520 .interp_newpath = NULL, 521 .brand_note = &linux64_brandnote, 522 .flags = BI_CAN_EXEC_DYN | BI_BRAND_NOTE 523 }; 524 525 Elf64_Brandinfo *linux_brandlist[] = { 526 &linux_glibc2brand, 527 NULL 528 }; 529 530 static int 531 linux64_elf_modevent(module_t mod, int type, void *data) 532 { 533 Elf64_Brandinfo **brandinfo; 534 struct linux_ioctl_handler**lihp; 535 int error; 536 537 error = 0; 538 switch(type) { 539 case MOD_LOAD: 540 for (brandinfo = &linux_brandlist[0]; *brandinfo != NULL; 541 ++brandinfo) 542 if (elf64_insert_brand_entry(*brandinfo) < 0) 543 error = EINVAL; 544 if (error == 0) { 545 SET_FOREACH(lihp, linux_ioctl_handler_set) 546 linux_ioctl_register_handler(*lihp); 547 stclohz = (stathz ? stathz : hz); 548 if (bootverbose) 549 printf("Linux arm64 ELF exec handler installed\n"); 550 } 551 break; 552 case MOD_UNLOAD: 553 for (brandinfo = &linux_brandlist[0]; *brandinfo != NULL; 554 ++brandinfo) 555 if (elf64_brand_inuse(*brandinfo)) 556 error = EBUSY; 557 if (error == 0) { 558 for (brandinfo = &linux_brandlist[0]; 559 *brandinfo != NULL; ++brandinfo) 560 if (elf64_remove_brand_entry(*brandinfo) < 0) 561 error = EINVAL; 562 } 563 if (error == 0) { 564 SET_FOREACH(lihp, linux_ioctl_handler_set) 565 linux_ioctl_unregister_handler(*lihp); 566 if (bootverbose) 567 printf("Linux arm64 ELF exec handler removed\n"); 568 } else 569 printf("Could not deinstall Linux arm64 ELF interpreter entry\n"); 570 break; 571 default: 572 return (EOPNOTSUPP); 573 } 574 return (error); 575 } 576 577 static moduledata_t linux64_elf_mod = { 578 "linux64elf", 579 linux64_elf_modevent, 580 0 581 }; 582 583 DECLARE_MODULE_TIED(linux64elf, linux64_elf_mod, SI_SUB_EXEC, SI_ORDER_ANY); 584 MODULE_DEPEND(linux64elf, linux_common, 1, 1, 1); 585 FEATURE(linux64, "AArch64 Linux 64bit support"); 586