ia32_sysvec.c revision 208453
1100384Speter/*- 2100384Speter * Copyright (c) 2002 Doug Rabson 3114987Speter * Copyright (c) 2003 Peter Wemm 4100384Speter * All rights reserved. 5100384Speter * 6100384Speter * Redistribution and use in source and binary forms, with or without 7100384Speter * modification, are permitted provided that the following conditions 8100384Speter * are met: 9100384Speter * 1. Redistributions of source code must retain the above copyright 10100384Speter * notice, this list of conditions and the following disclaimer. 11100384Speter * 2. Redistributions in binary form must reproduce the above copyright 12100384Speter * notice, this list of conditions and the following disclaimer in the 13100384Speter * documentation and/or other materials provided with the distribution. 14100384Speter * 15100384Speter * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16100384Speter * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17100384Speter * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18100384Speter * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19100384Speter * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20100384Speter * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21100384Speter * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22100384Speter * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23100384Speter * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24100384Speter * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25100384Speter * SUCH DAMAGE. 26100384Speter */ 27100384Speter 28118031Sobrien#include <sys/cdefs.h> 29118031Sobrien__FBSDID("$FreeBSD: head/sys/compat/ia32/ia32_sysvec.c 208453 2010-05-23 18:32:02Z kib $"); 30118031Sobrien 31114987Speter#include "opt_compat.h" 32114987Speter 33100384Speter#define __ELF_WORD_SIZE 32 34100384Speter 35100384Speter#include <sys/param.h> 36100384Speter#include <sys/exec.h> 37100384Speter#include <sys/fcntl.h> 38100384Speter#include <sys/imgact.h> 39100384Speter#include <sys/kernel.h> 40100384Speter#include <sys/lock.h> 41100384Speter#include <sys/malloc.h> 42100384Speter#include <sys/mutex.h> 43100384Speter#include <sys/mman.h> 44100384Speter#include <sys/namei.h> 45100384Speter#include <sys/pioctl.h> 46100384Speter#include <sys/proc.h> 47100384Speter#include <sys/procfs.h> 48100384Speter#include <sys/resourcevar.h> 49100384Speter#include <sys/systm.h> 50100384Speter#include <sys/signalvar.h> 51100384Speter#include <sys/stat.h> 52100384Speter#include <sys/sx.h> 53100384Speter#include <sys/syscall.h> 54100384Speter#include <sys/sysctl.h> 55100384Speter#include <sys/sysent.h> 56100384Speter#include <sys/vnode.h> 57100384Speter#include <sys/imgact_elf.h> 58100384Speter 59100384Speter#include <vm/vm.h> 60100384Speter#include <vm/vm_kern.h> 61100384Speter#include <vm/vm_param.h> 62100384Speter#include <vm/pmap.h> 63100384Speter#include <vm/vm_map.h> 64100384Speter#include <vm/vm_object.h> 65100384Speter#include <vm/vm_extern.h> 66100384Speter 67163018Sdavidxu#include <compat/freebsd32/freebsd32_signal.h> 68119336Speter#include <compat/freebsd32/freebsd32_util.h> 69119336Speter#include <compat/freebsd32/freebsd32_proto.h> 70123422Speter#include <compat/freebsd32/freebsd32_syscall.h> 71119336Speter#include <compat/ia32/ia32_signal.h> 72123423Speter#ifdef __amd64__ 73114987Speter#include <machine/psl.h> 74114987Speter#include <machine/segments.h> 75114987Speter#include <machine/specialreg.h> 76123423Speter#else 77123423Speter#include <i386/include/psl.h> 78123423Speter#include <i386/include/segments.h> 79123423Speter#include <i386/include/specialreg.h> 80123423Speter#endif 81100384Speter#include <machine/frame.h> 82100384Speter#include <machine/md_var.h> 83114987Speter#include <machine/pcb.h> 84114987Speter#include <machine/cpufunc.h> 85100384Speter 86121720SpeterCTASSERT(sizeof(struct ia32_mcontext) == 640); 87121720SpeterCTASSERT(sizeof(struct ia32_ucontext) == 704); 88121720SpeterCTASSERT(sizeof(struct ia32_sigframe) == 800); 89163018SdavidxuCTASSERT(sizeof(struct siginfo32) == 64); 90121720Speter#ifdef COMPAT_FREEBSD4 91121720SpeterCTASSERT(sizeof(struct ia32_mcontext4) == 260); 92121720SpeterCTASSERT(sizeof(struct ia32_ucontext4) == 324); 93121720SpeterCTASSERT(sizeof(struct ia32_sigframe4) == 408); 94121720Speter#endif 95121720Speter 96208453Skibextern const char *freebsd32_syscallnames[]; 97208453Skib 98169565Sjhbstatic void ia32_fixlimit(struct rlimit *rl, int which); 99100384Speter 100120422SpeterSYSCTL_NODE(_compat, OID_AUTO, ia32, CTLFLAG_RW, 0, "ia32 mode"); 101120422Speter 102171410Sjhbstatic u_long ia32_maxdsiz = IA32_MAXDSIZ; 103171410SjhbSYSCTL_ULONG(_compat_ia32, OID_AUTO, maxdsiz, CTLFLAG_RW, &ia32_maxdsiz, 0, ""); 104172316SjhbTUNABLE_ULONG("compat.ia32.maxdsiz", &ia32_maxdsiz); 105171410Sjhbstatic u_long ia32_maxssiz = IA32_MAXSSIZ; 106171410SjhbSYSCTL_ULONG(_compat_ia32, OID_AUTO, maxssiz, CTLFLAG_RW, &ia32_maxssiz, 0, ""); 107172316SjhbTUNABLE_ULONG("compat.ia32.maxssiz", &ia32_maxssiz); 108171410Sjhbstatic u_long ia32_maxvmem = IA32_MAXVMEM; 109171410SjhbSYSCTL_ULONG(_compat_ia32, OID_AUTO, maxvmem, CTLFLAG_RW, &ia32_maxvmem, 0, ""); 110172316SjhbTUNABLE_ULONG("compat.ia32.maxvmem", &ia32_maxvmem); 111171410Sjhb 112100384Speterstruct sysentvec ia32_freebsd_sysvec = { 113183322Skib .sv_size = FREEBSD32_SYS_MAXSYSCALL, 114183322Skib .sv_table = freebsd32_sysent, 115183322Skib .sv_mask = 0, 116183322Skib .sv_sigsize = 0, 117183322Skib .sv_sigtbl = NULL, 118183322Skib .sv_errsize = 0, 119183322Skib .sv_errtbl = NULL, 120183322Skib .sv_transtrap = NULL, 121183322Skib .sv_fixup = elf32_freebsd_fixup, 122183322Skib .sv_sendsig = ia32_sendsig, 123183322Skib .sv_sigcode = ia32_sigcode, 124183322Skib .sv_szsigcode = &sz_ia32_sigcode, 125183322Skib .sv_prepsyscall = NULL, 126183322Skib .sv_name = "FreeBSD ELF32", 127183322Skib .sv_coredump = elf32_coredump, 128183322Skib .sv_imgact_try = NULL, 129183322Skib .sv_minsigstksz = MINSIGSTKSZ, 130183322Skib .sv_pagesize = IA32_PAGE_SIZE, 131183322Skib .sv_minuser = 0, 132183322Skib .sv_maxuser = FREEBSD32_USRSTACK, 133183322Skib .sv_usrstack = FREEBSD32_USRSTACK, 134183322Skib .sv_psstrings = FREEBSD32_PS_STRINGS, 135183322Skib .sv_stackprot = VM_PROT_ALL, 136205014Snwhitehorn .sv_copyout_strings = freebsd32_copyout_strings, 137183322Skib .sv_setregs = ia32_setregs, 138183322Skib .sv_fixlimit = ia32_fixlimit, 139185169Skib .sv_maxssiz = &ia32_maxssiz, 140208453Skib .sv_flags = SV_ABI_FREEBSD | SV_IA32 | SV_ILP32, 141208453Skib .sv_set_syscall_retval = ia32_set_syscall_retval, 142208453Skib .sv_fetch_syscall_args = ia32_fetch_syscall_args, 143208453Skib .sv_syscallnames = freebsd32_syscallnames, 144100384Speter}; 145100384Speter 146114987Speter 147100384Speterstatic Elf32_Brandinfo ia32_brand_info = { 148183322Skib .brand = ELFOSABI_FREEBSD, 149183322Skib .machine = EM_386, 150183322Skib .compat_3_brand = "FreeBSD", 151183322Skib .emul_path = NULL, 152183322Skib .interp_path = "/libexec/ld-elf.so.1", 153183322Skib .sysvec = &ia32_freebsd_sysvec, 154183322Skib .interp_newpath = "/libexec/ld-elf32.so.1", 155189771Sdchagin .brand_note = &elf32_freebsd_brandnote, 156190708Sdchagin .flags = BI_CAN_EXEC_DYN | BI_BRAND_NOTE 157183322Skib}; 158100384Speter 159197729SbzSYSINIT(ia32, SI_SUB_EXEC, SI_ORDER_MIDDLE, 160100384Speter (sysinit_cfunc_t) elf32_insert_brand_entry, 161100384Speter &ia32_brand_info); 162100384Speter 163123742Speterstatic Elf32_Brandinfo ia32_brand_oinfo = { 164183322Skib .brand = ELFOSABI_FREEBSD, 165183322Skib .machine = EM_386, 166183322Skib .compat_3_brand = "FreeBSD", 167183322Skib .emul_path = NULL, 168183322Skib .interp_path = "/usr/libexec/ld-elf.so.1", 169183322Skib .sysvec = &ia32_freebsd_sysvec, 170183322Skib .interp_newpath = "/libexec/ld-elf32.so.1", 171189771Sdchagin .brand_note = &elf32_freebsd_brandnote, 172190708Sdchagin .flags = BI_CAN_EXEC_DYN | BI_BRAND_NOTE 173183322Skib}; 174123742Speter 175123742SpeterSYSINIT(oia32, SI_SUB_EXEC, SI_ORDER_ANY, 176123742Speter (sysinit_cfunc_t) elf32_insert_brand_entry, 177123742Speter &ia32_brand_oinfo); 178123742Speter 179196512Sbzstatic Elf32_Brandinfo kia32_brand_info = { 180196512Sbz .brand = ELFOSABI_FREEBSD, 181196512Sbz .machine = EM_386, 182196512Sbz .compat_3_brand = "FreeBSD", 183196512Sbz .emul_path = NULL, 184196512Sbz .interp_path = "/lib/ld.so.1", 185196512Sbz .sysvec = &ia32_freebsd_sysvec, 186196512Sbz .brand_note = &elf32_kfreebsd_brandnote, 187196653Sbz .flags = BI_CAN_EXEC_DYN | BI_BRAND_NOTE_MANDATORY 188196512Sbz}; 189133464Smarcel 190196512SbzSYSINIT(kia32, SI_SUB_EXEC, SI_ORDER_ANY, 191196512Sbz (sysinit_cfunc_t) elf32_insert_brand_entry, 192196512Sbz &kia32_brand_info); 193196512Sbz 194196512Sbz 195133464Smarcelvoid 196133464Smarcelelf32_dump_thread(struct thread *td __unused, void *dst __unused, 197133464Smarcel size_t *off __unused) 198133464Smarcel{ 199133464Smarcel} 200133464Smarcel 201120422Speterstatic void 202169565Sjhbia32_fixlimit(struct rlimit *rl, int which) 203120422Speter{ 204120422Speter 205169565Sjhb switch (which) { 206169565Sjhb case RLIMIT_DATA: 207169565Sjhb if (ia32_maxdsiz != 0) { 208169565Sjhb if (rl->rlim_cur > ia32_maxdsiz) 209169565Sjhb rl->rlim_cur = ia32_maxdsiz; 210169565Sjhb if (rl->rlim_max > ia32_maxdsiz) 211169565Sjhb rl->rlim_max = ia32_maxdsiz; 212169565Sjhb } 213169565Sjhb break; 214169565Sjhb case RLIMIT_STACK: 215169565Sjhb if (ia32_maxssiz != 0) { 216169565Sjhb if (rl->rlim_cur > ia32_maxssiz) 217169565Sjhb rl->rlim_cur = ia32_maxssiz; 218169565Sjhb if (rl->rlim_max > ia32_maxssiz) 219169565Sjhb rl->rlim_max = ia32_maxssiz; 220169565Sjhb } 221169565Sjhb break; 222169565Sjhb case RLIMIT_VMEM: 223169565Sjhb if (ia32_maxvmem != 0) { 224169565Sjhb if (rl->rlim_cur > ia32_maxvmem) 225169565Sjhb rl->rlim_cur = ia32_maxvmem; 226169565Sjhb if (rl->rlim_max > ia32_maxvmem) 227169565Sjhb rl->rlim_max = ia32_maxvmem; 228169565Sjhb } 229169565Sjhb break; 230120422Speter } 231120422Speter} 232