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