Index: head/sys/kern/kern_mib.c =================================================================== --- head/sys/kern/kern_mib.c (revision 360386) +++ head/sys/kern/kern_mib.c (revision 360387) @@ -1,701 +1,702 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1982, 1986, 1989, 1993 * The Regents of the University of California. All rights reserved. * * This code is derived from software contributed to Berkeley by * Mike Karels at Berkeley Software Design, Inc. * * Quite extensively rewritten by Poul-Henning Kamp of the FreeBSD * project, to make these variables more userfriendly. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)kern_sysctl.c 8.4 (Berkeley) 4/14/94 */ #include __FBSDID("$FreeBSD$"); #include "opt_posix.h" #include "opt_config.h" #include #include +#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include SYSCTL_ROOT_NODE(0, sysctl, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Sysctl internal magic"); SYSCTL_ROOT_NODE(CTL_KERN, kern, CTLFLAG_RW | CTLFLAG_CAPRD | CTLFLAG_MPSAFE, 0, "High kernel, proc, limits &c"); SYSCTL_ROOT_NODE(CTL_VM, vm, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Virtual memory"); SYSCTL_ROOT_NODE(CTL_VFS, vfs, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "File system"); SYSCTL_ROOT_NODE(CTL_NET, net, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Network, (see socket.h)"); SYSCTL_ROOT_NODE(CTL_DEBUG, debug, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Debugging"); SYSCTL_NODE(_debug, OID_AUTO, sizeof, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Sizeof various things"); SYSCTL_ROOT_NODE(CTL_HW, hw, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "hardware"); SYSCTL_ROOT_NODE(CTL_MACHDEP, machdep, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "machine dependent"); SYSCTL_NODE(_machdep, OID_AUTO, mitigations, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Machine dependent platform mitigations."); SYSCTL_ROOT_NODE(CTL_USER, user, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "user-level"); SYSCTL_ROOT_NODE(CTL_P1003_1B, p1003_1b, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "p1003_1b, (see p1003_1b.h)"); SYSCTL_ROOT_NODE(OID_AUTO, compat, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Compatibility code"); SYSCTL_ROOT_NODE(OID_AUTO, security, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Security"); #ifdef REGRESSION SYSCTL_ROOT_NODE(OID_AUTO, regression, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "Regression test MIB"); #endif SYSCTL_STRING(_kern, OID_AUTO, ident, CTLFLAG_RD|CTLFLAG_MPSAFE, kern_ident, 0, "Kernel identifier"); SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD|CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, BSD, "Operating system revision"); SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD|CTLFLAG_MPSAFE, version, 0, "Kernel version"); SYSCTL_STRING(_kern, OID_AUTO, compiler_version, CTLFLAG_RD|CTLFLAG_MPSAFE, compiler_version, 0, "Version of compiler used to compile kernel"); SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD|CTLFLAG_MPSAFE| CTLFLAG_CAPRD, ostype, 0, "Operating system type"); SYSCTL_INT(_kern, KERN_MAXPROC, maxproc, CTLFLAG_RDTUN | CTLFLAG_NOFETCH, &maxproc, 0, "Maximum number of processes"); SYSCTL_INT(_kern, KERN_MAXPROCPERUID, maxprocperuid, CTLFLAG_RW, &maxprocperuid, 0, "Maximum processes allowed per userid"); SYSCTL_INT(_kern, OID_AUTO, maxusers, CTLFLAG_RDTUN | CTLFLAG_NOFETCH, &maxusers, 0, "Hint for kernel tuning"); SYSCTL_INT(_kern, KERN_ARGMAX, argmax, CTLFLAG_RD|CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, ARG_MAX, "Maximum bytes of argument to execve(2)"); SYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD|CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, _POSIX_VERSION, "Version of POSIX attempting to comply to"); SYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RDTUN | CTLFLAG_NOFETCH | CTLFLAG_CAPRD, &ngroups_max, 0, "Maximum number of supplemental groups a user can belong to"); SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD|CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, 1, "Whether job control is available"); #ifdef _POSIX_SAVED_IDS SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD|CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, 1, "Whether saved set-group/user ID is available"); #else SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD|CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, 0, "Whether saved set-group/user ID is available"); #endif char kernelname[MAXPATHLEN] = PATH_KERNEL; /* XXX bloat */ SYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile, CTLFLAG_RW | CTLFLAG_MPSAFE, kernelname, sizeof kernelname, "Name of kernel file booted"); SYSCTL_INT(_kern, KERN_MAXPHYS, maxphys, CTLFLAG_RD | CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, MAXPHYS, "Maximum block I/O access size"); SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD|CTLFLAG_CAPRD, &mp_ncpus, 0, "Number of active CPUs"); SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD|CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, BYTE_ORDER, "System byte order"); SYSCTL_INT(_hw, HW_PAGESIZE, pagesize, CTLFLAG_RD|CTLFLAG_CAPRD, SYSCTL_NULL_INT_PTR, PAGE_SIZE, "System memory page size"); static int sysctl_kern_arnd(SYSCTL_HANDLER_ARGS) { char buf[256]; size_t len; len = MIN(req->oldlen, sizeof(buf)); read_random(buf, len); return (SYSCTL_OUT(req, buf, len)); } SYSCTL_PROC(_kern, KERN_ARND, arandom, CTLTYPE_OPAQUE | CTLFLAG_RD | CTLFLAG_MPSAFE | CTLFLAG_CAPRD, NULL, 0, sysctl_kern_arnd, "", "arc4rand"); static int sysctl_hw_physmem(SYSCTL_HANDLER_ARGS) { u_long val, p; p = SIZE_T_MAX >> PAGE_SHIFT; if (physmem < p) p = physmem; val = ctob(p); return (sysctl_handle_long(oidp, &val, 0, req)); } SYSCTL_PROC(_hw, HW_PHYSMEM, physmem, CTLTYPE_ULONG | CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 0, sysctl_hw_physmem, "LU", "Amount of physical memory (in bytes)"); static int sysctl_hw_realmem(SYSCTL_HANDLER_ARGS) { u_long val, p; p = SIZE_T_MAX >> PAGE_SHIFT; if (realmem < p) p = realmem; val = ctob(p); return (sysctl_handle_long(oidp, &val, 0, req)); } SYSCTL_PROC(_hw, HW_REALMEM, realmem, CTLTYPE_ULONG | CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 0, sysctl_hw_realmem, "LU", "Amount of memory (in bytes) reported by the firmware"); static int sysctl_hw_usermem(SYSCTL_HANDLER_ARGS) { u_long val, p, p1; p1 = physmem - vm_wire_count(); p = SIZE_T_MAX >> PAGE_SHIFT; if (p1 < p) p = p1; val = ctob(p); return (sysctl_handle_long(oidp, &val, 0, req)); } SYSCTL_PROC(_hw, HW_USERMEM, usermem, CTLTYPE_ULONG | CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 0, sysctl_hw_usermem, "LU", "Amount of memory (in bytes) which is not wired"); SYSCTL_LONG(_hw, OID_AUTO, availpages, CTLFLAG_RD, &physmem, 0, "Amount of physical memory (in pages)"); u_long pagesizes[MAXPAGESIZES] = { PAGE_SIZE }; static int sysctl_hw_pagesizes(SYSCTL_HANDLER_ARGS) { int error; #ifdef SCTL_MASK32 int i; uint32_t pagesizes32[MAXPAGESIZES]; if (req->flags & SCTL_MASK32) { /* * Recreate the "pagesizes" array with 32-bit elements. Truncate * any page size greater than UINT32_MAX to zero. */ for (i = 0; i < MAXPAGESIZES; i++) pagesizes32[i] = (uint32_t)pagesizes[i]; error = SYSCTL_OUT(req, pagesizes32, sizeof(pagesizes32)); } else #endif error = SYSCTL_OUT(req, pagesizes, sizeof(pagesizes)); return (error); } SYSCTL_PROC(_hw, OID_AUTO, pagesizes, CTLTYPE_ULONG | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, sysctl_hw_pagesizes, "LU", "Supported page sizes"); int adaptive_machine_arch = 1; SYSCTL_INT(_debug, OID_AUTO, adaptive_machine_arch, CTLFLAG_RW, &adaptive_machine_arch, 1, "Adapt reported machine architecture to the ABI of the binary"); static const char * proc_machine_arch(struct proc *p) { if (p->p_sysent->sv_machine_arch != NULL) return (p->p_sysent->sv_machine_arch(p)); #ifdef COMPAT_FREEBSD32 if (SV_PROC_FLAG(p, SV_ILP32)) return (MACHINE_ARCH32); #endif return (MACHINE_ARCH); } static int sysctl_hw_machine_arch(SYSCTL_HANDLER_ARGS) { const char *machine_arch; if (adaptive_machine_arch) machine_arch = proc_machine_arch(curproc); else machine_arch = MACHINE_ARCH; return (SYSCTL_OUT(req, machine_arch, strlen(machine_arch) + 1)); } SYSCTL_PROC(_hw, HW_MACHINE_ARCH, machine_arch, CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, sysctl_hw_machine_arch, "A", "System architecture"); #ifndef MACHINE_ARCHES #ifdef COMPAT_FREEBSD32 #define MACHINE_ARCHES MACHINE_ARCH " " MACHINE_ARCH32 #else #define MACHINE_ARCHES MACHINE_ARCH #endif #endif SYSCTL_STRING(_kern, OID_AUTO, supported_archs, CTLFLAG_RD | CTLFLAG_MPSAFE, MACHINE_ARCHES, 0, "Supported architectures for binaries"); static int sysctl_hostname(SYSCTL_HANDLER_ARGS) { struct prison *pr, *cpr; size_t pr_offset; char tmpname[MAXHOSTNAMELEN]; int descend, error, len; /* * This function can set: hostname domainname hostuuid. * Keep that in mind when comments say "hostname". */ pr_offset = (size_t)arg1; len = arg2; KASSERT(len <= sizeof(tmpname), ("length %d too long for %s", len, __func__)); pr = req->td->td_ucred->cr_prison; if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr) return (EPERM); /* * Make a local copy of hostname to get/set so we don't have to hold * the jail mutex during the sysctl copyin/copyout activities. */ mtx_lock(&pr->pr_mtx); bcopy((char *)pr + pr_offset, tmpname, len); mtx_unlock(&pr->pr_mtx); error = sysctl_handle_string(oidp, tmpname, len, req); if (req->newptr != NULL && error == 0) { /* * Copy the locally set hostname to all jails that share * this host info. */ sx_slock(&allprison_lock); while (!(pr->pr_flags & PR_HOST)) pr = pr->pr_parent; mtx_lock(&pr->pr_mtx); bcopy(tmpname, (char *)pr + pr_offset, len); FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) if (cpr->pr_flags & PR_HOST) descend = 0; else bcopy(tmpname, (char *)cpr + pr_offset, len); mtx_unlock(&pr->pr_mtx); sx_sunlock(&allprison_lock); } return (error); } SYSCTL_PROC(_kern, KERN_HOSTNAME, hostname, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_CAPRD | CTLFLAG_MPSAFE, (void *)(offsetof(struct prison, pr_hostname)), MAXHOSTNAMELEN, sysctl_hostname, "A", "Hostname"); SYSCTL_PROC(_kern, KERN_NISDOMAINNAME, domainname, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_CAPRD | CTLFLAG_MPSAFE, (void *)(offsetof(struct prison, pr_domainname)), MAXHOSTNAMELEN, sysctl_hostname, "A", "Name of the current YP/NIS domain"); SYSCTL_PROC(_kern, KERN_HOSTUUID, hostuuid, CTLTYPE_STRING | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_CAPRD | CTLFLAG_MPSAFE, (void *)(offsetof(struct prison, pr_hostuuid)), HOSTUUIDLEN, sysctl_hostname, "A", "Host UUID"); static int regression_securelevel_nonmonotonic = 0; #ifdef REGRESSION SYSCTL_INT(_regression, OID_AUTO, securelevel_nonmonotonic, CTLFLAG_RW, ®ression_securelevel_nonmonotonic, 0, "securelevel may be lowered"); #endif static int sysctl_kern_securelvl(SYSCTL_HANDLER_ARGS) { struct prison *pr, *cpr; int descend, error, level; pr = req->td->td_ucred->cr_prison; /* * Reading the securelevel is easy, since the current jail's level * is known to be at least as secure as any higher levels. Perform * a lockless read since the securelevel is an integer. */ level = pr->pr_securelevel; error = sysctl_handle_int(oidp, &level, 0, req); if (error || !req->newptr) return (error); /* Permit update only if the new securelevel exceeds the old. */ sx_slock(&allprison_lock); mtx_lock(&pr->pr_mtx); if (!regression_securelevel_nonmonotonic && level < pr->pr_securelevel) { mtx_unlock(&pr->pr_mtx); sx_sunlock(&allprison_lock); return (EPERM); } pr->pr_securelevel = level; /* * Set all child jails to be at least this level, but do not lower * them (even if regression_securelevel_nonmonotonic). */ FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) { if (cpr->pr_securelevel < level) cpr->pr_securelevel = level; } mtx_unlock(&pr->pr_mtx); sx_sunlock(&allprison_lock); return (error); } SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel, CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE, 0, 0, sysctl_kern_securelvl, "I", "Current secure level"); #ifdef INCLUDE_CONFIG_FILE /* Actual kernel configuration options. */ extern char kernconfstring[]; SYSCTL_STRING(_kern, OID_AUTO, conftxt, CTLFLAG_RD | CTLFLAG_MPSAFE, kernconfstring, 0, "Kernel configuration file"); #endif static int sysctl_hostid(SYSCTL_HANDLER_ARGS) { struct prison *pr, *cpr; u_long tmpid; int descend, error; /* * Like sysctl_hostname, except it operates on a u_long * instead of a string, and is used only for hostid. */ pr = req->td->td_ucred->cr_prison; if (!(pr->pr_allow & PR_ALLOW_SET_HOSTNAME) && req->newptr) return (EPERM); tmpid = pr->pr_hostid; error = sysctl_handle_long(oidp, &tmpid, 0, req); if (req->newptr != NULL && error == 0) { sx_slock(&allprison_lock); while (!(pr->pr_flags & PR_HOST)) pr = pr->pr_parent; mtx_lock(&pr->pr_mtx); pr->pr_hostid = tmpid; FOREACH_PRISON_DESCENDANT_LOCKED(pr, cpr, descend) if (cpr->pr_flags & PR_HOST) descend = 0; else cpr->pr_hostid = tmpid; mtx_unlock(&pr->pr_mtx); sx_sunlock(&allprison_lock); } return (error); } SYSCTL_PROC(_kern, KERN_HOSTID, hostid, CTLTYPE_ULONG | CTLFLAG_RW | CTLFLAG_PRISON | CTLFLAG_MPSAFE | CTLFLAG_CAPRD, NULL, 0, sysctl_hostid, "LU", "Host ID"); static struct mtx bootid_lk; MTX_SYSINIT(bootid_lock, &bootid_lk, "bootid generator lock", MTX_DEF); static int sysctl_bootid(SYSCTL_HANDLER_ARGS) { static uint8_t boot_id[16]; static bool initialized = false; mtx_lock(&bootid_lk); if (!initialized) { if (!is_random_seeded()) { mtx_unlock(&bootid_lk); return (ENXIO); } arc4random_buf(boot_id, sizeof(boot_id)); initialized = true; } mtx_unlock(&bootid_lk); return (SYSCTL_OUT(req, boot_id, sizeof(boot_id))); } SYSCTL_PROC(_kern, OID_AUTO, boot_id, CTLTYPE_STRUCT | CTLFLAG_RD | CTLFLAG_MPSAFE | CTLFLAG_CAPRD, NULL, 0, sysctl_bootid, "", "Random boot ID"); /* * The osrelease string is copied from the global (osrelease in vers.c) into * prison0 by a sysinit and is inherited by child jails if not changed at jail * creation, so we always return the copy from the current prison data. */ static int sysctl_osrelease(SYSCTL_HANDLER_ARGS) { struct prison *pr; pr = req->td->td_ucred->cr_prison; return (SYSCTL_OUT(req, pr->pr_osrelease, strlen(pr->pr_osrelease) + 1)); } SYSCTL_PROC(_kern, KERN_OSRELEASE, osrelease, CTLTYPE_STRING | CTLFLAG_CAPRD | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, sysctl_osrelease, "A", "Operating system release"); /* * The osreldate number is copied from the global (osreldate in vers.c) into * prison0 by a sysinit and is inherited by child jails if not changed at jail * creation, so we always return the value from the current prison data. */ static int sysctl_osreldate(SYSCTL_HANDLER_ARGS) { struct prison *pr; pr = req->td->td_ucred->cr_prison; return (SYSCTL_OUT(req, &pr->pr_osreldate, sizeof(pr->pr_osreldate))); } /* * NOTICE: The *userland* release date is available in * /usr/include/osreldate.h */ SYSCTL_PROC(_kern, KERN_OSRELDATE, osreldate, CTLTYPE_INT | CTLFLAG_CAPRD | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, sysctl_osreldate, "I", "Kernel release date"); /* * The build-id is copied from the ELF section .note.gnu.build-id. The linker * script defines two variables to expose the beginning and end. LLVM * currently uses a SHA-1 hash, but other formats can be supported by checking * the length of the section. */ extern char __build_id_start[]; extern char __build_id_end[]; #define BUILD_ID_HEADER_LEN 0x10 #define BUILD_ID_HASH_MAXLEN 0x14 static int sysctl_build_id(SYSCTL_HANDLER_ARGS) { uintptr_t sectionlen = (uintptr_t)(__build_id_end - __build_id_start); int hashlen; char buf[2*BUILD_ID_HASH_MAXLEN+1]; /* * The ELF note section has a four byte length for the vendor name, * four byte length for the value, and a four byte vendor specific * type. The name for the build id is "GNU\0". We skip the first 16 * bytes to read the build hash. We will return the remaining bytes up * to 20 (SHA-1) hash size. If the hash happens to be a custom number * of bytes we will pad the value with zeros, as the section should be * four byte aligned. */ if (sectionlen <= BUILD_ID_HEADER_LEN || sectionlen > (BUILD_ID_HEADER_LEN + BUILD_ID_HASH_MAXLEN)) { return (ENOENT); } hashlen = sectionlen - BUILD_ID_HEADER_LEN; for (int i = 0; i < hashlen; i++) { uint8_t c = __build_id_start[i+BUILD_ID_HEADER_LEN]; snprintf(&buf[2*i], 3, "%02x", c); } return (SYSCTL_OUT(req, buf, strlen(buf) + 1)); } SYSCTL_PROC(_kern, OID_AUTO, build_id, CTLTYPE_STRING | CTLFLAG_CAPRD | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, sysctl_build_id, "A", "Operating system build-id"); SYSCTL_NODE(_kern, OID_AUTO, features, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, "Kernel Features"); #ifdef COMPAT_FREEBSD4 FEATURE(compat_freebsd4, "Compatible with FreeBSD 4"); #endif #ifdef COMPAT_FREEBSD5 FEATURE(compat_freebsd5, "Compatible with FreeBSD 5"); #endif #ifdef COMPAT_FREEBSD6 FEATURE(compat_freebsd6, "Compatible with FreeBSD 6"); #endif #ifdef COMPAT_FREEBSD7 FEATURE(compat_freebsd7, "Compatible with FreeBSD 7"); #endif /* * This is really cheating. These actually live in the libc, something * which I'm not quite sure is a good idea anyway, but in order for * getnext and friends to actually work, we define dummies here. * * XXXRW: These probably should be CTLFLAG_CAPRD. */ SYSCTL_STRING(_user, USER_CS_PATH, cs_path, CTLFLAG_RD, "", 0, "PATH that finds all the standard utilities"); SYSCTL_INT(_user, USER_BC_BASE_MAX, bc_base_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Max ibase/obase values in bc(1)"); SYSCTL_INT(_user, USER_BC_DIM_MAX, bc_dim_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Max array size in bc(1)"); SYSCTL_INT(_user, USER_BC_SCALE_MAX, bc_scale_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Max scale value in bc(1)"); SYSCTL_INT(_user, USER_BC_STRING_MAX, bc_string_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Max string length in bc(1)"); SYSCTL_INT(_user, USER_COLL_WEIGHTS_MAX, coll_weights_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Maximum number of weights assigned to an LC_COLLATE locale entry"); SYSCTL_INT(_user, USER_EXPR_NEST_MAX, expr_nest_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, ""); SYSCTL_INT(_user, USER_LINE_MAX, line_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Max length (bytes) of a text-processing utility's input line"); SYSCTL_INT(_user, USER_RE_DUP_MAX, re_dup_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Maximum number of repeats of a regexp permitted"); SYSCTL_INT(_user, USER_POSIX2_VERSION, posix2_version, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "The version of POSIX 1003.2 with which the system attempts to comply"); SYSCTL_INT(_user, USER_POSIX2_C_BIND, posix2_c_bind, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Whether C development supports the C bindings option"); SYSCTL_INT(_user, USER_POSIX2_C_DEV, posix2_c_dev, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Whether system supports the C development utilities option"); SYSCTL_INT(_user, USER_POSIX2_CHAR_TERM, posix2_char_term, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, ""); SYSCTL_INT(_user, USER_POSIX2_FORT_DEV, posix2_fort_dev, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Whether system supports FORTRAN development utilities"); SYSCTL_INT(_user, USER_POSIX2_FORT_RUN, posix2_fort_run, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Whether system supports FORTRAN runtime utilities"); SYSCTL_INT(_user, USER_POSIX2_LOCALEDEF, posix2_localedef, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Whether system supports creation of locales"); SYSCTL_INT(_user, USER_POSIX2_SW_DEV, posix2_sw_dev, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Whether system supports software development utilities"); SYSCTL_INT(_user, USER_POSIX2_UPE, posix2_upe, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Whether system supports the user portability utilities"); SYSCTL_INT(_user, USER_STREAM_MAX, stream_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Min Maximum number of streams a process may have open at one time"); SYSCTL_INT(_user, USER_TZNAME_MAX, tzname_max, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, 0, "Min Maximum number of types supported for timezone names"); #include SYSCTL_INT(_debug_sizeof, OID_AUTO, vnode, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, sizeof(struct vnode), "sizeof(struct vnode)"); SYSCTL_INT(_debug_sizeof, OID_AUTO, proc, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, sizeof(struct proc), "sizeof(struct proc)"); static int sysctl_kern_pid_max(SYSCTL_HANDLER_ARGS) { int error, pm; pm = pid_max; error = sysctl_handle_int(oidp, &pm, 0, req); if (error || !req->newptr) return (error); sx_xlock(&proctree_lock); sx_xlock(&allproc_lock); /* * Only permit the values less then PID_MAX. * As a safety measure, do not allow to limit the pid_max too much. */ if (pm < 300 || pm > PID_MAX) error = EINVAL; else pid_max = pm; sx_xunlock(&allproc_lock); sx_xunlock(&proctree_lock); return (error); } SYSCTL_PROC(_kern, OID_AUTO, pid_max, CTLTYPE_INT | CTLFLAG_RWTUN | CTLFLAG_NOFETCH | CTLFLAG_MPSAFE, 0, 0, sysctl_kern_pid_max, "I", "Maximum allowed pid"); #include #include SYSCTL_INT(_debug_sizeof, OID_AUTO, bio, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, sizeof(struct bio), "sizeof(struct bio)"); SYSCTL_INT(_debug_sizeof, OID_AUTO, buf, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, sizeof(struct buf), "sizeof(struct buf)"); #include SYSCTL_INT(_debug_sizeof, OID_AUTO, kinfo_proc, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, sizeof(struct kinfo_proc), "sizeof(struct kinfo_proc)"); /* Used by kernel debuggers. */ const int pcb_size = sizeof(struct pcb); SYSCTL_INT(_debug_sizeof, OID_AUTO, pcb, CTLFLAG_RD, SYSCTL_NULL_INT_PTR, sizeof(struct pcb), "sizeof(struct pcb)"); /* XXX compatibility, remove for 6.0 */ #include #include SYSCTL_INT(_kern, OID_AUTO, fallback_elf_brand, CTLFLAG_RW, &__elfN(fallback_brand), sizeof(__elfN(fallback_brand)), "compatibility for kern.fallback_elf_brand"); Index: head/sys/riscv/include/param.h =================================================================== --- head/sys/riscv/include/param.h (revision 360386) +++ head/sys/riscv/include/param.h (revision 360387) @@ -1,119 +1,117 @@ /*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * William Jolitz. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: @(#)param.h 5.8 (Berkeley) 6/28/91 * $FreeBSD$ */ #ifndef _MACHINE_PARAM_H_ #define _MACHINE_PARAM_H_ /* * Machine dependent constants for RISC-V. */ #include #define STACKALIGNBYTES (16 - 1) #define STACKALIGN(p) ((uint64_t)(p) & ~STACKALIGNBYTES) #ifndef MACHINE #define MACHINE "riscv" #endif #ifndef MACHINE_ARCH -/* - * Check to see if we're building with hardware floating instructions - * allowed. We check this instead of hard vs soft float ABI because we build the - * kernel with soft float ABI to avoid hard float instruction generation. If - * we ever allow a 'soft ABI but with hard floats' userland, then we'll need - * to rethink this. - */ -#ifdef __riscv_flen -#define MACHINE_ARCH "riscv64" -#else + +/* Always use the hard-float arch for the kernel. */ +#if !defined(_KERNEL) && defined(__riscv_float_abi_soft) #define MACHINE_ARCH "riscv64sf" +#else +#define MACHINE_ARCH "riscv64" #endif +#endif +#ifdef _KERNEL +#define MACHINE_ARCHES "riscv64 riscv64sf" #endif #ifdef SMP #ifndef MAXCPU #define MAXCPU 16 #endif #else #define MAXCPU 1 #endif #ifndef MAXMEMDOM #define MAXMEMDOM 1 #endif #define ALIGNBYTES _ALIGNBYTES #define ALIGN(p) _ALIGN(p) /* * ALIGNED_POINTER is a boolean macro that checks whether an address * is valid to fetch data elements of type t from on this architecture. * This does not reflect the optimal alignment, just the possibility * (within reasonable limits). */ #define ALIGNED_POINTER(p, t) ((((u_long)(p)) & (sizeof(t) - 1)) == 0) /* * CACHE_LINE_SIZE is the compile-time maximum cache line size for an * architecture. It should be used with appropriate caution. */ #define CACHE_LINE_SHIFT 6 #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) #define PAGE_SHIFT 12 #define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ #define PAGE_MASK (PAGE_SIZE - 1) #define MAXPAGESIZES 3 /* maximum number of supported page sizes */ #ifndef KSTACK_PAGES #define KSTACK_PAGES 4 /* pages of kernel stack (with pcb) */ #endif #define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */ #define PCPU_PAGES 1 /* * Mach derived conversion macros */ #define round_page(x) (((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK) #define trunc_page(x) ((unsigned long)(x) & ~PAGE_MASK) #define atop(x) ((unsigned long)(x) >> PAGE_SHIFT) #define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT) #define riscv_btop(x) ((unsigned long)(x) >> PAGE_SHIFT) #define riscv_ptob(x) ((unsigned long)(x) << PAGE_SHIFT) #define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024)) #endif /* !_MACHINE_PARAM_H_ */ Index: head/sys/riscv/riscv/elf_machdep.c =================================================================== --- head/sys/riscv/riscv/elf_machdep.c (revision 360386) +++ head/sys/riscv/riscv/elf_machdep.c (revision 360387) @@ -1,513 +1,526 @@ /*- * Copyright 1996-1998 John D. Polstra. * Copyright (c) 2015 Ruslan Bukin * Copyright (c) 2016 Yukishige Shibata * All rights reserved. * * Portions of this software were developed by SRI International and the * University of Cambridge Computer Laboratory under DARPA/AFRL contract * FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme. * * Portions of this software were developed by the University of Cambridge * Computer Laboratory as part of the CTSRD Project, with support from the * UK Higher Education Innovation Fund (HEIF). * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include +static const char *riscv_machine_arch(struct proc *p); + u_long elf_hwcap; struct sysentvec elf64_freebsd_sysvec = { .sv_size = SYS_MAXSYSCALL, .sv_table = sysent, .sv_errsize = 0, .sv_errtbl = NULL, .sv_transtrap = NULL, .sv_fixup = __elfN(freebsd_fixup), .sv_sendsig = sendsig, .sv_sigcode = sigcode, .sv_szsigcode = &szsigcode, .sv_name = "FreeBSD ELF64", .sv_coredump = __elfN(coredump), .sv_imgact_try = NULL, .sv_minsigstksz = MINSIGSTKSZ, .sv_minuser = VM_MIN_ADDRESS, .sv_maxuser = VM_MAXUSER_ADDRESS, .sv_usrstack = USRSTACK, .sv_psstrings = PS_STRINGS, .sv_stackprot = VM_PROT_READ | VM_PROT_WRITE, .sv_copyout_auxargs = __elfN(freebsd_copyout_auxargs), .sv_copyout_strings = exec_copyout_strings, .sv_setregs = exec_setregs, .sv_fixlimit = NULL, .sv_maxssiz = NULL, .sv_flags = SV_ABI_FREEBSD | SV_LP64 | SV_SHP | SV_ASLR, .sv_set_syscall_retval = cpu_set_syscall_retval, .sv_fetch_syscall_args = cpu_fetch_syscall_args, .sv_syscallnames = syscallnames, .sv_shared_page_base = SHAREDPAGE, .sv_shared_page_len = PAGE_SIZE, .sv_schedtail = NULL, .sv_thread_detach = NULL, .sv_trap = NULL, .sv_hwcap = &elf_hwcap, + .sv_machine_arch = riscv_machine_arch, }; INIT_SYSENTVEC(elf64_sysvec, &elf64_freebsd_sysvec); + +static const char * +riscv_machine_arch(struct proc *p) +{ + + if ((p->p_elf_flags & EF_RISCV_FLOAT_ABI_MASK) == + EF_RISCV_FLOAT_ABI_SOFT) + return (MACHINE_ARCH "sf"); + return (MACHINE_ARCH); +} static Elf64_Brandinfo freebsd_brand_info = { .brand = ELFOSABI_FREEBSD, .machine = EM_RISCV, .compat_3_brand = "FreeBSD", .emul_path = NULL, .interp_path = "/libexec/ld-elf.so.1", .sysvec = &elf64_freebsd_sysvec, .interp_newpath = NULL, .brand_note = &elf64_freebsd_brandnote, .flags = BI_CAN_EXEC_DYN | BI_BRAND_NOTE }; SYSINIT(elf64, SI_SUB_EXEC, SI_ORDER_FIRST, (sysinit_cfunc_t)elf64_insert_brand_entry, &freebsd_brand_info); static bool debug_kld; SYSCTL_BOOL(_debug, OID_AUTO, kld_reloc, CTLFLAG_RW, &debug_kld, 0, "Activate debug prints in elf_reloc_internal()"); struct type2str_ent { int type; const char *str; }; void elf64_dump_thread(struct thread *td, void *dst, size_t *off) { } /* * Following 4 functions are used to manupilate bits on 32bit interger value. * FIXME: I implemetend for ease-to-understand rather than for well-optimized. */ static uint32_t gen_bitmask(int msb, int lsb) { uint32_t mask; if (msb == sizeof(mask) * 8 - 1) mask = ~0; else mask = (1U << (msb + 1)) - 1; if (lsb > 0) mask &= ~((1U << lsb) - 1); return (mask); } static uint32_t extract_bits(uint32_t x, int msb, int lsb) { uint32_t mask; mask = gen_bitmask(msb, lsb); x &= mask; x >>= lsb; return (x); } static uint32_t insert_bits(uint32_t d, uint32_t s, int msb, int lsb) { uint32_t mask; mask = gen_bitmask(msb, lsb); d &= ~mask; s <<= lsb; s &= mask; return (d | s); } static uint32_t insert_imm(uint32_t insn, uint32_t imm, int imm_msb, int imm_lsb, int insn_lsb) { int insn_msb; uint32_t v; v = extract_bits(imm, imm_msb, imm_lsb); insn_msb = (imm_msb - imm_lsb) + insn_lsb; return (insert_bits(insn, v, insn_msb, insn_lsb)); } /* * The RISC-V ISA is designed so that all of immediate values are * sign-extended. * An immediate value is sometimes generated at runtime by adding * 12bit sign integer and 20bit signed integer. This requests 20bit * immediate value to be ajusted if the MSB of the 12bit immediate * value is asserted (sign-extended value is treated as negative value). * * For example, 0x123800 can be calculated by adding upper 20 bit of * 0x124000 and sign-extended 12bit immediate whose bit pattern is * 0x800 as follows: * 0x123800 * = 0x123000 + 0x800 * = (0x123000 + 0x1000) + (-0x1000 + 0x800) * = (0x123000 + 0x1000) + (0xff...ff800) * = 0x124000 + sign-extention(0x800) */ static uint32_t calc_hi20_imm(uint32_t value) { /* * There is the arithmetical hack that can remove conditional * statement. But I implement it in straightforward way. */ if ((value & 0x800) != 0) value += 0x1000; return (value & ~0xfff); } static const struct type2str_ent t2s[] = { { R_RISCV_NONE, "R_RISCV_NONE" }, { R_RISCV_64, "R_RISCV_64" }, { R_RISCV_JUMP_SLOT, "R_RISCV_JUMP_SLOT" }, { R_RISCV_RELATIVE, "R_RISCV_RELATIVE" }, { R_RISCV_JAL, "R_RISCV_JAL" }, { R_RISCV_CALL, "R_RISCV_CALL" }, { R_RISCV_PCREL_HI20, "R_RISCV_PCREL_HI20" }, { R_RISCV_PCREL_LO12_I, "R_RISCV_PCREL_LO12_I" }, { R_RISCV_PCREL_LO12_S, "R_RISCV_PCREL_LO12_S" }, { R_RISCV_HI20, "R_RISCV_HI20" }, { R_RISCV_LO12_I, "R_RISCV_LO12_I" }, { R_RISCV_LO12_S, "R_RISCV_LO12_S" }, }; static const char * reloctype_to_str(int type) { int i; for (i = 0; i < sizeof(t2s) / sizeof(t2s[0]); ++i) { if (type == t2s[i].type) return t2s[i].str; } return "*unknown*"; } bool elf_is_ifunc_reloc(Elf_Size r_info __unused) { return (false); } /* * Currently kernel loadable module for RISCV is compiled with -fPIC option. * (see also additional CFLAGS definition for RISCV in sys/conf/kmod.mk) * Only R_RISCV_64, R_RISCV_JUMP_SLOT and RISCV_RELATIVE are emitted in * the module. Other relocations will be processed when kernel loadable * modules are built in non-PIC. * * FIXME: only RISCV64 is supported. */ static int elf_reloc_internal(linker_file_t lf, Elf_Addr relocbase, const void *data, int type, int local, elf_lookup_fn lookup) { Elf_Size rtype, symidx; const Elf_Rela *rela; Elf_Addr val, addr; Elf64_Addr *where; Elf_Addr addend; uint32_t before32_1; uint32_t before32; uint64_t before64; uint32_t *insn32p; uint32_t imm20; int error; switch (type) { case ELF_RELOC_RELA: rela = (const Elf_Rela *)data; where = (Elf_Addr *)(relocbase + rela->r_offset); insn32p = (uint32_t *)where; addend = rela->r_addend; rtype = ELF_R_TYPE(rela->r_info); symidx = ELF_R_SYM(rela->r_info); break; default: printf("%s:%d unknown reloc type %d\n", __FUNCTION__, __LINE__, type); return (-1); } switch (rtype) { case R_RISCV_NONE: break; case R_RISCV_64: case R_RISCV_JUMP_SLOT: error = lookup(lf, symidx, 1, &addr); if (error != 0) return (-1); val = addr; before64 = *where; if (*where != val) *where = val; if (debug_kld) printf("%p %c %-24s %016lx -> %016lx\n", where, (local ? 'l' : 'g'), reloctype_to_str(rtype), before64, *where); break; case R_RISCV_RELATIVE: before64 = *where; *where = elf_relocaddr(lf, relocbase + addend); if (debug_kld) printf("%p %c %-24s %016lx -> %016lx\n", where, (local ? 'l' : 'g'), reloctype_to_str(rtype), before64, *where); break; case R_RISCV_JAL: error = lookup(lf, symidx, 1, &addr); if (error != 0) return (-1); val = addr - (Elf_Addr)where; if (val <= -(1UL << 20) || (1UL << 20) <= val) { printf("kldload: huge offset against R_RISCV_JAL\n"); return (-1); } before32 = *insn32p; *insn32p = insert_imm(*insn32p, val, 20, 20, 31); *insn32p = insert_imm(*insn32p, val, 10, 1, 21); *insn32p = insert_imm(*insn32p, val, 11, 11, 20); *insn32p = insert_imm(*insn32p, val, 19, 12, 12); if (debug_kld) printf("%p %c %-24s %08x -> %08x\n", where, (local ? 'l' : 'g'), reloctype_to_str(rtype), before32, *insn32p); break; case R_RISCV_CALL: /* * R_RISCV_CALL relocates 8-byte region that consists * of the sequence of AUIPC and JALR. */ /* Calculate and check the pc relative offset. */ error = lookup(lf, symidx, 1, &addr); if (error != 0) return (-1); val = addr - (Elf_Addr)where; if (val <= -(1UL << 32) || (1UL << 32) <= val) { printf("kldload: huge offset against R_RISCV_CALL\n"); return (-1); } /* Relocate AUIPC. */ before32 = insn32p[0]; imm20 = calc_hi20_imm(val); insn32p[0] = insert_imm(insn32p[0], imm20, 31, 12, 12); /* Relocate JALR. */ before32_1 = insn32p[1]; insn32p[1] = insert_imm(insn32p[1], val, 11, 0, 20); if (debug_kld) printf("%p %c %-24s %08x %08x -> %08x %08x\n", where, (local ? 'l' : 'g'), reloctype_to_str(rtype), before32, insn32p[0], before32_1, insn32p[1]); break; case R_RISCV_PCREL_HI20: error = lookup(lf, symidx, 1, &addr); if (error != 0) return (-1); val = addr - (Elf_Addr)where; insn32p = (uint32_t *)where; before32 = *insn32p; imm20 = calc_hi20_imm(val); *insn32p = insert_imm(*insn32p, imm20, 31, 12, 12); if (debug_kld) printf("%p %c %-24s %08x -> %08x\n", where, (local ? 'l' : 'g'), reloctype_to_str(rtype), before32, *insn32p); break; case R_RISCV_PCREL_LO12_I: error = lookup(lf, symidx, 1, &addr); if (error != 0) return (-1); val = addr - (Elf_Addr)where; insn32p = (uint32_t *)where; before32 = *insn32p; *insn32p = insert_imm(*insn32p, addr, 11, 0, 20); if (debug_kld) printf("%p %c %-24s %08x -> %08x\n", where, (local ? 'l' : 'g'), reloctype_to_str(rtype), before32, *insn32p); break; case R_RISCV_PCREL_LO12_S: error = lookup(lf, symidx, 1, &addr); if (error != 0) return (-1); val = addr - (Elf_Addr)where; insn32p = (uint32_t *)where; before32 = *insn32p; *insn32p = insert_imm(*insn32p, addr, 11, 5, 25); *insn32p = insert_imm(*insn32p, addr, 4, 0, 7); if (debug_kld) printf("%p %c %-24s %08x -> %08x\n", where, (local ? 'l' : 'g'), reloctype_to_str(rtype), before32, *insn32p); break; case R_RISCV_HI20: error = lookup(lf, symidx, 1, &addr); if (error != 0) return (-1); val = addr; insn32p = (uint32_t *)where; before32 = *insn32p; imm20 = calc_hi20_imm(val); *insn32p = insert_imm(*insn32p, imm20, 31, 12, 12); if (debug_kld) printf("%p %c %-24s %08x -> %08x\n", where, (local ? 'l' : 'g'), reloctype_to_str(rtype), before32, *insn32p); break; case R_RISCV_LO12_I: error = lookup(lf, symidx, 1, &addr); if (error != 0) return (-1); val = addr; insn32p = (uint32_t *)where; before32 = *insn32p; *insn32p = insert_imm(*insn32p, addr, 11, 0, 20); if (debug_kld) printf("%p %c %-24s %08x -> %08x\n", where, (local ? 'l' : 'g'), reloctype_to_str(rtype), before32, *insn32p); break; case R_RISCV_LO12_S: error = lookup(lf, symidx, 1, &addr); if (error != 0) return (-1); val = addr; insn32p = (uint32_t *)where; before32 = *insn32p; *insn32p = insert_imm(*insn32p, addr, 11, 5, 25); *insn32p = insert_imm(*insn32p, addr, 4, 0, 7); if (debug_kld) printf("%p %c %-24s %08x -> %08x\n", where, (local ? 'l' : 'g'), reloctype_to_str(rtype), before32, *insn32p); break; default: printf("kldload: unexpected relocation type %ld\n", rtype); return (-1); } return (0); } int elf_reloc(linker_file_t lf, Elf_Addr relocbase, const void *data, int type, elf_lookup_fn lookup) { return (elf_reloc_internal(lf, relocbase, data, type, 0, lookup)); } int elf_reloc_local(linker_file_t lf, Elf_Addr relocbase, const void *data, int type, elf_lookup_fn lookup) { return (elf_reloc_internal(lf, relocbase, data, type, 1, lookup)); } int elf_cpu_load_file(linker_file_t lf __unused) { return (0); } int elf_cpu_unload_file(linker_file_t lf __unused) { return (0); } int elf_cpu_parse_dynamic(caddr_t loadbase __unused, Elf_Dyn *dynamic __unused) { return (0); }