diff --git a/sys/amd64/amd64/elf_machdep.c b/sys/amd64/amd64/elf_machdep.c index a66faf3d347e..0e6c8d310dfd 100644 --- a/sys/amd64/amd64/elf_machdep.c +++ b/sys/amd64/amd64/elf_machdep.c @@ -1,442 +1,442 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright 1996-1998 John D. Polstra. * All rights reserved. * * 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 ``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 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "vdso_offsets.h" extern const char _binary_elf_vdso_so_1_start[]; extern const char _binary_elf_vdso_so_1_end[]; extern char _binary_elf_vdso_so_1_size; struct sysentvec elf64_freebsd_sysvec_la48 = { .sv_size = SYS_MAXSYSCALL, .sv_table = sysent, .sv_fixup = __elfN(freebsd_fixup), .sv_sendsig = sendsig, .sv_sigcode = _binary_elf_vdso_so_1_start, .sv_szsigcode = (int *)&_binary_elf_vdso_so_1_size, .sv_sigcodeoff = VDSO_SIGCODE_OFFSET, .sv_name = "FreeBSD ELF64", .sv_coredump = __elfN(coredump), .sv_elf_core_osabi = ELFOSABI_FREEBSD, .sv_elf_core_abi_vendor = FREEBSD_ABI_VENDOR, .sv_elf_core_prepare_notes = __elfN(prepare_notes), .sv_minsigstksz = MINSIGSTKSZ, .sv_minuser = VM_MIN_ADDRESS, .sv_maxuser = VM_MAXUSER_ADDRESS_LA48, .sv_usrstack = USRSTACK_LA48, .sv_psstrings = PS_STRINGS_LA48, .sv_psstringssz = sizeof(struct ps_strings), .sv_stackprot = VM_PROT_ALL, .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_ASLR | SV_LP64 | SV_SHP | SV_TIMEKEEP | SV_RNG_SEED_VER | SV_DSO_SIG | SV_SIGSYS, .sv_set_syscall_retval = cpu_set_syscall_retval, .sv_fetch_syscall_args = cpu_fetch_syscall_args, .sv_syscallnames = syscallnames, .sv_shared_page_base = SHAREDPAGE_LA48, .sv_shared_page_len = PAGE_SIZE, .sv_schedtail = NULL, .sv_thread_detach = NULL, .sv_trap = NULL, .sv_onexec_old = exec_onexec_old, .sv_onexit = exit_onexit, .sv_set_fork_retval = x86_set_fork_retval, .sv_regset_begin = SET_BEGIN(__elfN(regset)), .sv_regset_end = SET_LIMIT(__elfN(regset)), }; struct sysentvec elf64_freebsd_sysvec_la57 = { .sv_size = SYS_MAXSYSCALL, .sv_table = sysent, .sv_fixup = __elfN(freebsd_fixup), .sv_sendsig = sendsig, .sv_sigcode = _binary_elf_vdso_so_1_start, .sv_szsigcode = (int *)&_binary_elf_vdso_so_1_size, .sv_sigcodeoff = VDSO_SIGCODE_OFFSET, .sv_name = "FreeBSD ELF64", .sv_coredump = __elfN(coredump), .sv_elf_core_osabi = ELFOSABI_FREEBSD, .sv_elf_core_abi_vendor = FREEBSD_ABI_VENDOR, .sv_elf_core_prepare_notes = __elfN(prepare_notes), .sv_minsigstksz = MINSIGSTKSZ, .sv_minuser = VM_MIN_ADDRESS, .sv_maxuser = VM_MAXUSER_ADDRESS_LA57, .sv_usrstack = USRSTACK_LA57, .sv_psstrings = PS_STRINGS_LA57, .sv_psstringssz = sizeof(struct ps_strings), .sv_stackprot = VM_PROT_ALL, .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_ASLR | SV_LP64 | SV_SHP | SV_TIMEKEEP | SV_RNG_SEED_VER | SV_DSO_SIG | SV_SIGSYS, .sv_set_syscall_retval = cpu_set_syscall_retval, .sv_fetch_syscall_args = cpu_fetch_syscall_args, .sv_syscallnames = syscallnames, .sv_shared_page_base = SHAREDPAGE_LA57, .sv_shared_page_len = PAGE_SIZE, .sv_schedtail = NULL, .sv_thread_detach = NULL, .sv_trap = NULL, .sv_onexec_old = exec_onexec_old, .sv_onexit = exit_onexit, .sv_set_fork_retval= x86_set_fork_retval, .sv_regset_begin = SET_BEGIN(__elfN(regset)), .sv_regset_end = SET_LIMIT(__elfN(regset)), }; static void amd64_init_sysvecs(void *arg) { amd64_lower_shared_page(&elf64_freebsd_sysvec_la48); if (la57) { exec_sysvec_init(&elf64_freebsd_sysvec_la57); exec_sysvec_init_secondary(&elf64_freebsd_sysvec_la57, &elf64_freebsd_sysvec_la48); } else { exec_sysvec_init(&elf64_freebsd_sysvec_la48); } } SYSINIT(elf64_sysvec, SI_SUB_EXEC, SI_ORDER_ANY, amd64_init_sysvecs, NULL); void amd64_lower_shared_page(struct sysentvec *sv) { if (hw_lower_amd64_sharedpage != 0) { sv->sv_maxuser -= PAGE_SIZE; sv->sv_shared_page_base -= PAGE_SIZE; sv->sv_usrstack -= PAGE_SIZE; sv->sv_psstrings -= PAGE_SIZE; } } static bool -freebsd_brand_info_la57_img_compat(struct image_params *imgp, - int32_t *osrel __unused, uint32_t *fctl0) +freebsd_brand_info_la57_img_compat(const struct image_params *imgp, + const int32_t *osrel __unused, const uint32_t *fctl0) { if ((imgp->proc->p_md.md_flags & P_MD_LA57) != 0) return (true); if (fctl0 == NULL || (*fctl0 & NT_FREEBSD_FCTL_LA48) != 0) return (false); if ((imgp->proc->p_md.md_flags & P_MD_LA48) != 0) return (false); return (true); } static Elf64_Brandinfo freebsd_brand_info_la48 = { .brand = ELFOSABI_FREEBSD, .machine = EM_X86_64, .compat_3_brand = "FreeBSD", .interp_path = "/libexec/ld-elf.so.1", .sysvec = &elf64_freebsd_sysvec_la48, .interp_newpath = NULL, .brand_note = &elf64_freebsd_brandnote, .flags = BI_CAN_EXEC_DYN | BI_BRAND_NOTE, }; static Elf64_Brandinfo freebsd_brand_info_la57 = { .brand = ELFOSABI_FREEBSD, .machine = EM_X86_64, .compat_3_brand = "FreeBSD", .interp_path = "/libexec/ld-elf.so.1", .sysvec = &elf64_freebsd_sysvec_la57, .interp_newpath = NULL, .brand_note = &elf64_freebsd_brandnote, .flags = BI_CAN_EXEC_DYN | BI_BRAND_NOTE, .header_supported = freebsd_brand_info_la57_img_compat, }; static void sysinit_register_elf64_brand_entries(void *arg __unused) { /* * _57 must go first so it can either claim the image or hand * it to _48. */ if (la57) elf64_insert_brand_entry(&freebsd_brand_info_la57); elf64_insert_brand_entry(&freebsd_brand_info_la48); } SYSINIT(elf64, SI_SUB_EXEC, SI_ORDER_FIRST, sysinit_register_elf64_brand_entries, NULL); static Elf64_Brandinfo freebsd_brand_oinfo = { .brand = ELFOSABI_FREEBSD, .machine = EM_X86_64, .compat_3_brand = "FreeBSD", .interp_path = "/usr/libexec/ld-elf.so.1", .sysvec = &elf64_freebsd_sysvec_la48, .interp_newpath = NULL, .brand_note = &elf64_freebsd_brandnote, .flags = BI_CAN_EXEC_DYN | BI_BRAND_NOTE }; SYSINIT(oelf64, SI_SUB_EXEC, SI_ORDER_ANY, (sysinit_cfunc_t)elf64_insert_brand_entry, &freebsd_brand_oinfo); static Elf64_Brandinfo kfreebsd_brand_info = { .brand = ELFOSABI_FREEBSD, .machine = EM_X86_64, .compat_3_brand = "FreeBSD", .interp_path = "/lib/ld-kfreebsd-x86-64.so.1", .sysvec = &elf64_freebsd_sysvec_la48, .interp_newpath = NULL, .brand_note = &elf64_kfreebsd_brandnote, .flags = BI_CAN_EXEC_DYN | BI_BRAND_NOTE_MANDATORY }; SYSINIT(kelf64, SI_SUB_EXEC, SI_ORDER_ANY, (sysinit_cfunc_t)elf64_insert_brand_entry, &kfreebsd_brand_info); void elf64_dump_thread(struct thread *td, void *dst, size_t *off) { void *buf; size_t len; len = 0; if (use_xsave) { if (dst != NULL) { fpugetregs(td); len += elf64_populate_note(NT_X86_XSTATE, get_pcb_user_save_td(td), dst, cpu_max_ext_state_size, &buf); *(uint64_t *)((char *)buf + X86_XSTATE_XCR0_OFFSET) = xsave_mask; } else len += elf64_populate_note(NT_X86_XSTATE, NULL, NULL, cpu_max_ext_state_size, NULL); } *off = len; } bool elf_is_ifunc_reloc(Elf_Size r_info) { return (ELF_R_TYPE(r_info) == R_X86_64_IRELATIVE); } /* Process one elf relocation with addend. */ static int elf_reloc_internal(linker_file_t lf, Elf_Addr relocbase, const void *data, int type, bool late_ifunc, elf_lookup_fn lookup) { Elf64_Addr *where, val; Elf32_Addr *where32, val32; Elf_Addr addr; Elf_Addr addend; Elf_Size rtype, symidx; const Elf_Rel *rel; const Elf_Rela *rela; int error; switch (type) { case ELF_RELOC_REL: rel = (const Elf_Rel *)data; where = (Elf_Addr *) (relocbase + rel->r_offset); rtype = ELF_R_TYPE(rel->r_info); symidx = ELF_R_SYM(rel->r_info); /* Addend is 32 bit on 32 bit relocs */ switch (rtype) { case R_X86_64_PC32: case R_X86_64_32S: case R_X86_64_PLT32: addend = *(Elf32_Addr *)where; break; default: addend = *where; break; } break; case ELF_RELOC_RELA: rela = (const Elf_Rela *)data; where = (Elf_Addr *) (relocbase + rela->r_offset); addend = rela->r_addend; rtype = ELF_R_TYPE(rela->r_info); symidx = ELF_R_SYM(rela->r_info); break; default: panic("unknown reloc type %d\n", type); } if (late_ifunc) { KASSERT(type == ELF_RELOC_RELA, ("Only RELA ifunc relocations are supported")); if (rtype != R_X86_64_IRELATIVE) return (0); } switch (rtype) { case R_X86_64_NONE: /* none */ break; case R_X86_64_64: /* S + A */ error = lookup(lf, symidx, 1, &addr); val = addr + addend; if (error != 0) return (-1); if (*where != val) *where = val; break; case R_X86_64_PC32: /* S + A - P */ case R_X86_64_PLT32: /* L + A - P, L is PLT location for the symbol, which we treat as S */ error = lookup(lf, symidx, 1, &addr); where32 = (Elf32_Addr *)where; val32 = (Elf32_Addr)(addr + addend - (Elf_Addr)where); if (error != 0) return (-1); if (*where32 != val32) *where32 = val32; break; case R_X86_64_32S: /* S + A sign extend */ error = lookup(lf, symidx, 1, &addr); val32 = (Elf32_Addr)(addr + addend); where32 = (Elf32_Addr *)where; if (error != 0) return (-1); if (*where32 != val32) *where32 = val32; break; case R_X86_64_COPY: /* none */ /* * There shouldn't be copy relocations in kernel * objects. */ printf("kldload: unexpected R_COPY relocation, " "symbol index %ld\n", symidx); return (-1); case R_X86_64_GLOB_DAT: /* S */ case R_X86_64_JMP_SLOT: /* XXX need addend + offset */ error = lookup(lf, symidx, 1, &addr); if (error != 0) return (-1); if (*where != addr) *where = addr; break; case R_X86_64_RELATIVE: /* B + A */ addr = elf_relocaddr(lf, relocbase + addend); val = addr; if (*where != val) *where = val; break; case R_X86_64_IRELATIVE: addr = relocbase + addend; val = ((Elf64_Addr (*)(void))addr)(); if (*where != val) *where = val; break; default: printf("kldload: unexpected relocation type %ld, " "symbol index %ld\n", rtype, symidx); 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, false, 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, false, lookup)); } int elf_reloc_late(linker_file_t lf, Elf_Addr relocbase, const void *data, int type, elf_lookup_fn lookup) { return (elf_reloc_internal(lf, relocbase, data, type, true, 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); } diff --git a/sys/arm/arm/elf_machdep.c b/sys/arm/arm/elf_machdep.c index 7c91dfe3babc..e1003b71543a 100644 --- a/sys/arm/arm/elf_machdep.c +++ b/sys/arm/arm/elf_machdep.c @@ -1,329 +1,329 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright 1996-1998 John D. Polstra. * All rights reserved. * * 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 ``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 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef VFP #include #endif #include "opt_ddb.h" /* for OPT_DDB */ #include "opt_global.h" /* for OPT_KDTRACE_HOOKS */ #include "opt_stack.h" /* for OPT_STACK */ -static bool elf32_arm_abi_supported(struct image_params *, int32_t *, - uint32_t *); +static bool elf32_arm_abi_supported(const struct image_params *, + const int32_t *, const uint32_t *); u_long elf_hwcap; u_long elf_hwcap2; struct sysentvec elf32_freebsd_sysvec = { .sv_size = SYS_MAXSYSCALL, .sv_table = sysent, .sv_fixup = __elfN(freebsd_fixup), .sv_sendsig = sendsig, .sv_sigcode = sigcode, .sv_szsigcode = &szsigcode, .sv_name = "FreeBSD ELF32", .sv_coredump = __elfN(coredump), .sv_elf_core_osabi = ELFOSABI_FREEBSD, .sv_elf_core_abi_vendor = FREEBSD_ABI_VENDOR, .sv_elf_core_prepare_notes = __elfN(prepare_notes), .sv_minsigstksz = MINSIGSTKSZ, .sv_minuser = VM_MIN_ADDRESS, .sv_maxuser = VM_MAXUSER_ADDRESS, .sv_usrstack = USRSTACK, .sv_psstrings = PS_STRINGS, .sv_psstringssz = sizeof(struct ps_strings), .sv_stackprot = VM_PROT_ALL, .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_ASLR | SV_SHP | SV_TIMEKEEP | SV_RNG_SEED_VER | SV_ABI_FREEBSD | SV_ILP32 | SV_SIGSYS, .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_hwcap2 = &elf_hwcap2, .sv_onexec_old = exec_onexec_old, .sv_onexit = exit_onexit, .sv_regset_begin = SET_BEGIN(__elfN(regset)), .sv_regset_end = SET_LIMIT(__elfN(regset)), }; INIT_SYSENTVEC(elf32_sysvec, &elf32_freebsd_sysvec); static Elf32_Brandinfo freebsd_brand_info = { .brand = ELFOSABI_FREEBSD, .machine = EM_ARM, .compat_3_brand = "FreeBSD", .interp_path = "/libexec/ld-elf.so.1", .sysvec = &elf32_freebsd_sysvec, .interp_newpath = NULL, .brand_note = &elf32_freebsd_brandnote, .flags = BI_CAN_EXEC_DYN | BI_BRAND_NOTE, .header_supported= elf32_arm_abi_supported, }; SYSINIT(elf32, SI_SUB_EXEC, SI_ORDER_FIRST, (sysinit_cfunc_t) elf32_insert_brand_entry, &freebsd_brand_info); static bool -elf32_arm_abi_supported(struct image_params *imgp, int32_t *osrel __unused, - uint32_t *fctl0 __unused) +elf32_arm_abi_supported(const struct image_params *imgp, + const int32_t *osrel __unused, const uint32_t *fctl0 __unused) { const Elf_Ehdr *hdr = (const Elf_Ehdr *)imgp->image_header; /* * When configured for EABI, FreeBSD supports EABI vesions 4 and 5. */ if (EF_ARM_EABI_VERSION(hdr->e_flags) < EF_ARM_EABI_FREEBSD_MIN) { if (bootverbose) uprintf("Attempting to execute non EABI binary (rev %d) image %s", EF_ARM_EABI_VERSION(hdr->e_flags), imgp->args->fname); return (false); } return (true); } void elf32_dump_thread(struct thread *td __unused, void *dst __unused, size_t *off __unused) { } bool elf_is_ifunc_reloc(Elf_Size r_info __unused) { return (false); } /* * It is possible for the compiler to emit relocations for unaligned data. * We handle this situation with these inlines. */ #define RELOC_ALIGNED_P(x) \ (((uintptr_t)(x) & (sizeof(void *) - 1)) == 0) static __inline Elf_Addr load_ptr(Elf_Addr *where) { Elf_Addr res; if (RELOC_ALIGNED_P(where)) return *where; memcpy(&res, where, sizeof(res)); return (res); } static __inline void store_ptr(Elf_Addr *where, Elf_Addr val) { if (RELOC_ALIGNED_P(where)) *where = val; else memcpy(where, &val, sizeof(val)); } #undef RELOC_ALIGNED_P /* Process one elf relocation with addend. */ static int elf_reloc_internal(linker_file_t lf, Elf_Addr relocbase, const void *data, int type, int local, elf_lookup_fn lookup) { Elf_Addr *where; Elf_Addr addr; Elf_Addr addend; Elf_Word rtype, symidx; const Elf_Rel *rel; const Elf_Rela *rela; int error; switch (type) { case ELF_RELOC_REL: rel = (const Elf_Rel *)data; where = (Elf_Addr *) (relocbase + rel->r_offset); addend = load_ptr(where); rtype = ELF_R_TYPE(rel->r_info); symidx = ELF_R_SYM(rel->r_info); break; case ELF_RELOC_RELA: rela = (const Elf_Rela *)data; where = (Elf_Addr *) (relocbase + rela->r_offset); addend = rela->r_addend; rtype = ELF_R_TYPE(rela->r_info); symidx = ELF_R_SYM(rela->r_info); break; default: panic("unknown reloc type %d\n", type); } if (local) { if (rtype == R_ARM_RELATIVE) { /* A + B */ addr = elf_relocaddr(lf, relocbase + addend); if (load_ptr(where) != addr) store_ptr(where, addr); } return (0); } switch (rtype) { case R_ARM_NONE: /* none */ break; case R_ARM_ABS32: error = lookup(lf, symidx, 1, &addr); if (error != 0) return (-1); store_ptr(where, addr + load_ptr(where)); break; case R_ARM_COPY: /* none */ /* * There shouldn't be copy relocations in kernel * objects. */ printf("kldload: unexpected R_COPY relocation, " "symbol index %d\n", symidx); return (-1); break; case R_ARM_JUMP_SLOT: error = lookup(lf, symidx, 1, &addr); if (error == 0) { store_ptr(where, addr); return (0); } return (-1); case R_ARM_RELATIVE: break; default: printf("kldload: unexpected relocation type %d, " "symbol index %d\n", rtype, symidx); 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) { /* * The pmap code does not do an icache sync upon establishing executable * mappings in the kernel pmap. It's an optimization based on the fact * that kernel memory allocations always have EXECUTABLE protection even * when the memory isn't going to hold executable code. The only time * kernel memory holding instructions does need a sync is after loading * a kernel module, and that's when this function gets called. * * This syncs data and instruction caches after loading a module. We * don't worry about the kernel itself (lf->id is 1) as locore.S did * that on entry. Even if data cache maintenance was done by IO code, * the relocation fixup process creates dirty cache entries that we must * write back before doing icache sync. The instruction cache sync also * invalidates the branch predictor cache on platforms that have one. */ if (lf->id == 1) return (0); dcache_wb_pou((vm_offset_t)lf->address, (vm_size_t)lf->size); icache_inv_all(); #if defined(DDB) || defined(KDTRACE_HOOKS) || defined(STACK) /* * Inform the stack(9) code of the new module, so it can acquire its * per-module unwind data. */ unwind_module_loaded(lf); #endif return (0); } int elf_cpu_parse_dynamic(caddr_t loadbase __unused, Elf_Dyn *dynamic __unused) { return (0); } int elf_cpu_unload_file(linker_file_t lf) { #if defined(DDB) || defined(KDTRACE_HOOKS) || defined(STACK) /* Inform the stack(9) code that this module is gone. */ unwind_module_unloaded(lf); #endif return (0); } diff --git a/sys/arm64/arm64/elf32_machdep.c b/sys/arm64/arm64/elf32_machdep.c index de0ee9607ad1..fd2a2690b7a1 100644 --- a/sys/arm64/arm64/elf32_machdep.c +++ b/sys/arm64/arm64/elf32_machdep.c @@ -1,341 +1,341 @@ /*- * Copyright (c) 2014, 2015 The FreeBSD Foundation. * Copyright (c) 2014, 2017 Andrew Turner. * Copyright (c) 2018 Olivier Houchard * All rights reserved. * * This software was developed by Andrew Turner under * sponsorship from the FreeBSD Foundation. * * Portions of this software were developed by Konstantin Belousov * under sponsorship from the FreeBSD Foundation. * * 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 #define __ELF_WORD_SIZE 32 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef VFP #include #endif #include #define FREEBSD32_MINUSER 0x00001000 #define FREEBSD32_MAXUSER ((1ul << 32) - PAGE_SIZE) #define FREEBSD32_SHAREDPAGE (FREEBSD32_MAXUSER - PAGE_SIZE) #define FREEBSD32_USRSTACK FREEBSD32_SHAREDPAGE #define AARCH32_MAXDSIZ (512 * 1024 * 1024) #define AARCH32_MAXSSIZ (64 * 1024 * 1024) #define AARCH32_MAXVMEM 0 extern const char *freebsd32_syscallnames[]; extern char aarch32_sigcode[]; extern int sz_aarch32_sigcode; static int freebsd32_fetch_syscall_args(struct thread *td); static void freebsd32_setregs(struct thread *td, struct image_params *imgp, u_long stack); static void freebsd32_set_syscall_retval(struct thread *, int); -static bool elf32_arm_abi_supported(struct image_params *, int32_t *, - uint32_t *); +static bool elf32_arm_abi_supported(const struct image_params *, + const int32_t *, const uint32_t *); static void elf32_fixlimit(struct rlimit *rl, int which); extern void freebsd32_sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask); u_long __read_frequently elf32_hwcap; u_long __read_frequently elf32_hwcap2; static SYSCTL_NODE(_compat, OID_AUTO, aarch32, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "aarch32 mode"); static u_long aarch32_maxdsiz = AARCH32_MAXDSIZ; SYSCTL_ULONG(_compat_aarch32, OID_AUTO, maxdsiz, CTLFLAG_RWTUN, &aarch32_maxdsiz, 0, ""); u_long aarch32_maxssiz = AARCH32_MAXSSIZ; SYSCTL_ULONG(_compat_aarch32, OID_AUTO, maxssiz, CTLFLAG_RWTUN, &aarch32_maxssiz, 0, ""); static u_long aarch32_maxvmem = AARCH32_MAXVMEM; SYSCTL_ULONG(_compat_aarch32, OID_AUTO, maxvmem, CTLFLAG_RWTUN, &aarch32_maxvmem, 0, ""); static struct sysentvec elf32_freebsd_sysvec = { .sv_size = SYS_MAXSYSCALL, .sv_table = freebsd32_sysent, .sv_fixup = elf32_freebsd_fixup, .sv_sendsig = freebsd32_sendsig, .sv_sigcode = aarch32_sigcode, .sv_szsigcode = &sz_aarch32_sigcode, .sv_name = "FreeBSD ELF32", .sv_coredump = elf32_coredump, .sv_elf_core_osabi = ELFOSABI_FREEBSD, .sv_elf_core_abi_vendor = FREEBSD_ABI_VENDOR, .sv_elf_core_prepare_notes = elf32_prepare_notes, .sv_minsigstksz = MINSIGSTKSZ, .sv_minuser = FREEBSD32_MINUSER, .sv_maxuser = FREEBSD32_MAXUSER, .sv_usrstack = FREEBSD32_USRSTACK, .sv_psstrings = FREEBSD32_PS_STRINGS, .sv_psstringssz = sizeof(struct freebsd32_ps_strings), .sv_stackprot = VM_PROT_READ | VM_PROT_WRITE, .sv_copyout_auxargs = elf32_freebsd_copyout_auxargs, .sv_copyout_strings = freebsd32_copyout_strings, .sv_setregs = freebsd32_setregs, .sv_fixlimit = elf32_fixlimit, .sv_maxssiz = &aarch32_maxssiz, .sv_flags = SV_ABI_FREEBSD | SV_ILP32 | SV_SHP | SV_TIMEKEEP | SV_RNG_SEED_VER | SV_SIGSYS, .sv_set_syscall_retval = freebsd32_set_syscall_retval, .sv_fetch_syscall_args = freebsd32_fetch_syscall_args, .sv_syscallnames = freebsd32_syscallnames, .sv_shared_page_base = FREEBSD32_SHAREDPAGE, .sv_shared_page_len = PAGE_SIZE, .sv_schedtail = NULL, .sv_thread_detach = NULL, .sv_trap = NULL, .sv_hwcap = &elf32_hwcap, .sv_hwcap2 = &elf32_hwcap2, .sv_onexec_old = exec_onexec_old, .sv_onexit = exit_onexit, .sv_regset_begin = SET_BEGIN(__elfN(regset)), .sv_regset_end = SET_LIMIT(__elfN(regset)), }; INIT_SYSENTVEC(elf32_sysvec, &elf32_freebsd_sysvec); static Elf32_Brandinfo freebsd32_brand_info = { .brand = ELFOSABI_FREEBSD, .machine = EM_ARM, .compat_3_brand = "FreeBSD", .interp_path = "/libexec/ld-elf.so.1", .sysvec = &elf32_freebsd_sysvec, .interp_newpath = "/libexec/ld-elf32.so.1", .brand_note = &elf32_freebsd_brandnote, .flags = BI_CAN_EXEC_DYN | BI_BRAND_NOTE, .header_supported= elf32_arm_abi_supported, }; static void register_elf32_brand(void *arg) { /* Check if we support AArch32 */ if (ID_AA64PFR0_EL0_VAL(READ_SPECIALREG(id_aa64pfr0_el1)) == ID_AA64PFR0_EL0_64_32) { elf32_insert_brand_entry(&freebsd32_brand_info); } else { compat_freebsd_32bit = 0; } } SYSINIT(elf32, SI_SUB_EXEC, SI_ORDER_FIRST, register_elf32_brand, NULL); static bool -elf32_arm_abi_supported(struct image_params *imgp, int32_t *osrel __unused, - uint32_t *fctl0 __unused) +elf32_arm_abi_supported(const struct image_params *imgp, + const int32_t *osrel __unused, const uint32_t *fctl0 __unused) { const Elf32_Ehdr *hdr; #define EF_ARM_EABI_FREEBSD_MIN EF_ARM_EABI_VER4 hdr = (const Elf32_Ehdr *)imgp->image_header; if (EF_ARM_EABI_VERSION(hdr->e_flags) < EF_ARM_EABI_FREEBSD_MIN) { if (bootverbose) uprintf("Attempting to execute non EABI binary " "(rev %d) image %s", EF_ARM_EABI_VERSION(hdr->e_flags), imgp->args->fname); return (false); } return (true); } static int freebsd32_fetch_syscall_args(struct thread *td) { struct proc *p; register_t *ap; struct syscall_args *sa; int error, i, nap, narg; unsigned int args[4]; nap = 4; p = td->td_proc; ap = td->td_frame->tf_x; sa = &td->td_sa; /* r7 is the syscall id */ sa->code = td->td_frame->tf_x[7]; sa->original_code = sa->code; if (sa->code == SYS_syscall) { sa->code = *ap++; nap--; } else if (sa->code == SYS___syscall) { sa->code = ap[1]; nap -= 2; ap += 2; } if (sa->code >= p->p_sysent->sv_size) sa->callp = &nosys_sysent; else sa->callp = &p->p_sysent->sv_table[sa->code]; narg = sa->callp->sy_narg; for (i = 0; i < nap; i++) sa->args[i] = ap[i]; if (narg > nap) { if (narg - nap > nitems(args)) panic("Too many system call arguiments"); error = copyin((void *)td->td_frame->tf_x[13], args, (narg - nap) * sizeof(int)); if (error != 0) return (error); for (i = 0; i < (narg - nap); i++) sa->args[i + nap] = args[i]; } td->td_retval[0] = 0; td->td_retval[1] = 0; return (0); } static void freebsd32_set_syscall_retval(struct thread *td, int error) { struct trapframe *frame; frame = td->td_frame; switch (error) { case 0: frame->tf_x[0] = td->td_retval[0]; frame->tf_x[1] = td->td_retval[1]; frame->tf_spsr &= ~PSR_C; break; case ERESTART: /* * Reconstruct the pc to point at the swi. */ if ((frame->tf_spsr & PSR_T) != 0) frame->tf_elr -= 2; //THUMB_INSN_SIZE; else frame->tf_elr -= 4; //INSN_SIZE; break; case EJUSTRETURN: /* nothing to do */ break; default: frame->tf_x[0] = error; frame->tf_spsr |= PSR_C; break; } } static void freebsd32_setregs(struct thread *td, struct image_params *imgp, uintptr_t stack) { struct trapframe *tf = td->td_frame; struct pcb *pcb = td->td_pcb; memset(tf, 0, sizeof(struct trapframe)); /* * We need to set x0 for init as it doesn't call * cpu_set_syscall_retval to copy the value. We also * need to set td_retval for the cases where we do. */ tf->tf_x[0] = stack; /* SP_usr is mapped to x13 */ tf->tf_x[13] = stack; /* LR_usr is mapped to x14 */ tf->tf_x[14] = imgp->entry_addr; tf->tf_elr = imgp->entry_addr; tf->tf_spsr = PSR_M_32; if ((uint32_t)imgp->entry_addr & 1) tf->tf_spsr |= PSR_T; #ifdef VFP vfp_reset_state(td, pcb); #endif /* * Clear debug register state. It is not applicable to the new process. */ bzero(&pcb->pcb_dbg_regs, sizeof(pcb->pcb_dbg_regs)); } void elf32_dump_thread(struct thread *td, void *dst, size_t *off) { } static void elf32_fixlimit(struct rlimit *rl, int which) { switch (which) { case RLIMIT_DATA: if (aarch32_maxdsiz != 0) { if (rl->rlim_cur > aarch32_maxdsiz) rl->rlim_cur = aarch32_maxdsiz; if (rl->rlim_max > aarch32_maxdsiz) rl->rlim_max = aarch32_maxdsiz; } break; case RLIMIT_STACK: if (aarch32_maxssiz != 0) { if (rl->rlim_cur > aarch32_maxssiz) rl->rlim_cur = aarch32_maxssiz; if (rl->rlim_max > aarch32_maxssiz) rl->rlim_max = aarch32_maxssiz; } break; case RLIMIT_VMEM: if (aarch32_maxvmem != 0) { if (rl->rlim_cur > aarch32_maxvmem) rl->rlim_cur = aarch32_maxvmem; if (rl->rlim_max > aarch32_maxvmem) rl->rlim_max = aarch32_maxvmem; } break; } } diff --git a/sys/powerpc/powerpc/elf64_machdep.c b/sys/powerpc/powerpc/elf64_machdep.c index 6edfd965b7ec..b780a2ed82fc 100644 --- a/sys/powerpc/powerpc/elf64_machdep.c +++ b/sys/powerpc/powerpc/elf64_machdep.c @@ -1,460 +1,460 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright 1996-1998 John D. Polstra. * All rights reserved. * * 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 ``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 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void exec_setregs_funcdesc(struct thread *td, struct image_params *imgp, uintptr_t stack); struct sysentvec elf64_freebsd_sysvec_v1 = { .sv_size = SYS_MAXSYSCALL, .sv_table = sysent, .sv_fixup = __elfN(freebsd_fixup), .sv_sendsig = sendsig, .sv_sigcode = sigcode64, .sv_szsigcode = &szsigcode64, .sv_name = "FreeBSD ELF64", .sv_coredump = __elfN(coredump), .sv_elf_core_osabi = ELFOSABI_FREEBSD, .sv_elf_core_abi_vendor = FREEBSD_ABI_VENDOR, .sv_elf_core_prepare_notes = __elfN(prepare_notes), .sv_minsigstksz = MINSIGSTKSZ, .sv_minuser = VM_MIN_ADDRESS, .sv_maxuser = VM_MAXUSER_ADDRESS, .sv_usrstack = USRSTACK, .sv_psstrings = PS_STRINGS, .sv_psstringssz = sizeof(struct ps_strings), .sv_stackprot = VM_PROT_ALL, .sv_copyout_auxargs = __elfN(powerpc_copyout_auxargs), .sv_copyout_strings = exec_copyout_strings, .sv_setregs = exec_setregs_funcdesc, .sv_fixlimit = NULL, .sv_maxssiz = NULL, .sv_flags = SV_ABI_FREEBSD | SV_LP64 | SV_SHP | SV_ASLR | SV_TIMEKEEP | SV_RNG_SEED_VER | SV_SIGSYS, .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 = &cpu_features, .sv_hwcap2 = &cpu_features2, .sv_onexec_old = exec_onexec_old, .sv_onexit = exit_onexit, .sv_regset_begin = SET_BEGIN(__elfN(regset)), .sv_regset_end = SET_LIMIT(__elfN(regset)), }; struct sysentvec elf64_freebsd_sysvec_v2 = { .sv_size = SYS_MAXSYSCALL, .sv_table = sysent, .sv_fixup = __elfN(freebsd_fixup), .sv_sendsig = sendsig, .sv_sigcode = sigcode64, /* Fixed up in ppc64_init_sysvecs(). */ .sv_szsigcode = &szsigcode64, .sv_name = "FreeBSD ELF64 V2", .sv_coredump = __elfN(coredump), .sv_elf_core_osabi = ELFOSABI_FREEBSD, .sv_elf_core_abi_vendor = FREEBSD_ABI_VENDOR, .sv_elf_core_prepare_notes = __elfN(prepare_notes), .sv_minsigstksz = MINSIGSTKSZ, .sv_minuser = VM_MIN_ADDRESS, .sv_maxuser = VM_MAXUSER_ADDRESS, .sv_usrstack = USRSTACK, .sv_psstrings = PS_STRINGS, .sv_psstringssz = sizeof(struct ps_strings), .sv_stackprot = VM_PROT_ALL, .sv_copyout_auxargs = __elfN(powerpc_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_TIMEKEEP | SV_RNG_SEED_VER | SV_SIGSYS, .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 = &cpu_features, .sv_hwcap2 = &cpu_features2, .sv_onexec_old = exec_onexec_old, .sv_onexit = exit_onexit, .sv_regset_begin = SET_BEGIN(__elfN(regset)), .sv_regset_end = SET_LIMIT(__elfN(regset)), }; -static bool ppc64_elfv1_header_match(struct image_params *params, - int32_t *, uint32_t *); -static bool ppc64_elfv2_header_match(struct image_params *params, - int32_t *, uint32_t *); +static bool ppc64_elfv1_header_match(const struct image_params *params, + const int32_t *, const uint32_t *); +static bool ppc64_elfv2_header_match(const struct image_params *params, + const int32_t *, const uint32_t *); static Elf64_Brandinfo freebsd_brand_info_elfv1 = { .brand = ELFOSABI_FREEBSD, .machine = EM_PPC64, .compat_3_brand = "FreeBSD", .interp_path = "/libexec/ld-elf.so.1", .sysvec = &elf64_freebsd_sysvec_v1, .interp_newpath = NULL, .brand_note = &elf64_freebsd_brandnote, .flags = BI_CAN_EXEC_DYN | BI_BRAND_NOTE, .header_supported = &ppc64_elfv1_header_match }; SYSINIT(elf64v1, SI_SUB_EXEC, SI_ORDER_ANY, (sysinit_cfunc_t) elf64_insert_brand_entry, &freebsd_brand_info_elfv1); static Elf64_Brandinfo freebsd_brand_info_elfv2 = { .brand = ELFOSABI_FREEBSD, .machine = EM_PPC64, .compat_3_brand = "FreeBSD", .interp_path = "/libexec/ld-elf.so.1", .sysvec = &elf64_freebsd_sysvec_v2, .interp_newpath = NULL, .brand_note = &elf64_freebsd_brandnote, .flags = BI_CAN_EXEC_DYN | BI_BRAND_NOTE, .header_supported = &ppc64_elfv2_header_match }; SYSINIT(elf64v2, SI_SUB_EXEC, SI_ORDER_ANY, (sysinit_cfunc_t) elf64_insert_brand_entry, &freebsd_brand_info_elfv2); static Elf64_Brandinfo freebsd_brand_oinfo = { .brand = ELFOSABI_FREEBSD, .machine = EM_PPC64, .compat_3_brand = "FreeBSD", .interp_path = "/usr/libexec/ld-elf.so.1", .sysvec = &elf64_freebsd_sysvec_v1, .interp_newpath = NULL, .brand_note = &elf64_freebsd_brandnote, .flags = BI_CAN_EXEC_DYN | BI_BRAND_NOTE, .header_supported = &ppc64_elfv1_header_match }; SYSINIT(oelf64, SI_SUB_EXEC, SI_ORDER_ANY, (sysinit_cfunc_t) elf64_insert_brand_entry, &freebsd_brand_oinfo); void elf_reloc_self(Elf_Dyn *dynp, Elf_Addr relocbase); static void ppc64_init_sysvecs(void *arg) { exec_sysvec_init(&elf64_freebsd_sysvec_v2); exec_sysvec_init_secondary(&elf64_freebsd_sysvec_v2, &elf64_freebsd_sysvec_v1); /* * Adjust elfv2 sigcode after elfv1 sysvec is initialized. * exec_sysvec_init_secondary() assumes secondary sysvecs use * identical signal code, and skips allocating a second copy. * Since the ELFv2 trampoline is a strict subset of the ELFv1 code, * we can work around this by adjusting the offset. This also * avoids two copies of the trampoline code being allocated! */ elf64_freebsd_sysvec_v2.sv_sigcode_offset += (uintptr_t)sigcode64_elfv2 - (uintptr_t)&sigcode64; elf64_freebsd_sysvec_v2.sv_szsigcode = &szsigcode64_elfv2; } SYSINIT(elf64_sysvec, SI_SUB_EXEC, SI_ORDER_ANY, ppc64_init_sysvecs, NULL); static bool -ppc64_elfv1_header_match(struct image_params *params, int32_t *osrel __unused, - uint32_t *fctl0 __unused) +ppc64_elfv1_header_match(const struct image_params *params, + const int32_t *osrel __unused, const uint32_t *fctl0 __unused) { const Elf64_Ehdr *hdr = (const Elf64_Ehdr *)params->image_header; int abi = (hdr->e_flags & 3); return (abi == 0 || abi == 1); } static bool -ppc64_elfv2_header_match(struct image_params *params, int32_t *osrel __unused, - uint32_t *fctl0 __unused) +ppc64_elfv2_header_match(const struct image_params *params, + const int32_t *osrel __unused, const uint32_t *fctl0 __unused) { const Elf64_Ehdr *hdr = (const Elf64_Ehdr *)params->image_header; int abi = (hdr->e_flags & 3); return (abi == 2); } static void exec_setregs_funcdesc(struct thread *td, struct image_params *imgp, uintptr_t stack) { struct trapframe *tf; register_t entry_desc[3]; tf = trapframe(td); exec_setregs(td, imgp, stack); /* * For 64-bit ELFv1, we need to disentangle the function * descriptor * * 0. entry point * 1. TOC value (r2) * 2. Environment pointer (r11) */ (void)copyin((void *)imgp->entry_addr, entry_desc, sizeof(entry_desc)); tf->srr0 = entry_desc[0] + imgp->reloc_base; tf->fixreg[2] = entry_desc[1] + imgp->reloc_base; tf->fixreg[11] = entry_desc[2] + imgp->reloc_base; } void elf64_dump_thread(struct thread *td, void *dst, size_t *off) { size_t len; struct pcb *pcb; uint64_t vshr[32]; uint64_t *vsr_dw1; int vsr_idx; len = 0; pcb = td->td_pcb; if (pcb->pcb_flags & PCB_VEC) { save_vec_nodrop(td); if (dst != NULL) { len += elf64_populate_note(NT_PPC_VMX, &pcb->pcb_vec, (char *)dst + len, sizeof(pcb->pcb_vec), NULL); } else len += elf64_populate_note(NT_PPC_VMX, NULL, NULL, sizeof(pcb->pcb_vec), NULL); } if (pcb->pcb_flags & PCB_VSX) { save_fpu_nodrop(td); if (dst != NULL) { /* * Doubleword 0 of VSR0-VSR31 overlap with FPR0-FPR31 and * VSR32-VSR63 overlap with VR0-VR31, so we only copy * the non-overlapping data, which is doubleword 1 of VSR0-VSR31. */ for (vsr_idx = 0; vsr_idx < nitems(vshr); vsr_idx++) { vsr_dw1 = (uint64_t *)&pcb->pcb_fpu.fpr[vsr_idx].vsr[2]; vshr[vsr_idx] = *vsr_dw1; } len += elf64_populate_note(NT_PPC_VSX, vshr, (char *)dst + len, sizeof(vshr), NULL); } else len += elf64_populate_note(NT_PPC_VSX, NULL, NULL, sizeof(vshr), NULL); } *off = len; } bool elf_is_ifunc_reloc(Elf_Size r_info) { return (ELF_R_TYPE(r_info) == R_PPC_IRELATIVE); } /* Process one elf relocation with addend. */ static int elf_reloc_internal(linker_file_t lf, Elf_Addr relocbase, const void *data, int type, int local, elf_lookup_fn lookup) { Elf_Addr *where; Elf_Addr addr; Elf_Addr addend, val; Elf_Word rtype, symidx; const Elf_Rela *rela; int error; switch (type) { case ELF_RELOC_REL: panic("PPC only supports RELA relocations"); break; case ELF_RELOC_RELA: rela = (const Elf_Rela *)data; where = (Elf_Addr *) (relocbase + rela->r_offset); addend = rela->r_addend; rtype = ELF_R_TYPE(rela->r_info); symidx = ELF_R_SYM(rela->r_info); break; default: panic("elf_reloc: unknown relocation mode %d\n", type); } switch (rtype) { case R_PPC_NONE: break; case R_PPC64_ADDR64: /* doubleword64 S + A */ error = lookup(lf, symidx, 1, &addr); if (error != 0) return (-1); addr += addend; *where = addr; break; case R_PPC_RELATIVE: /* doubleword64 B + A */ *where = elf_relocaddr(lf, relocbase + addend); break; case R_PPC_JMP_SLOT: /* function descriptor copy */ lookup(lf, symidx, 1, &addr); #if !defined(_CALL_ELF) || _CALL_ELF == 1 memcpy(where, (Elf_Addr *)addr, 3*sizeof(Elf_Addr)); #else *where = addr; #endif __asm __volatile("dcbst 0,%0; sync" :: "r"(where) : "memory"); break; case R_PPC_IRELATIVE: addr = relocbase + addend; val = ((Elf64_Addr (*)(void))addr)(); if (*where != val) *where = val; break; default: printf("kldload: unexpected relocation type %d, " "symbol index %d\n", (int)rtype, symidx); return (-1); } return (0); } void elf_reloc_self(Elf_Dyn *dynp, Elf_Addr relocbase) { Elf_Rela *rela = NULL, *relalim; Elf_Addr relasz = 0; Elf_Addr *where; /* * Extract the rela/relasz values from the dynamic section */ for (; dynp->d_tag != DT_NULL; dynp++) { switch (dynp->d_tag) { case DT_RELA: rela = (Elf_Rela *)(relocbase+dynp->d_un.d_ptr); break; case DT_RELASZ: relasz = dynp->d_un.d_val; break; } } /* * Relocate these values */ relalim = (Elf_Rela *)((caddr_t)rela + relasz); for (; rela < relalim; rela++) { if (ELF_R_TYPE(rela->r_info) != R_PPC_RELATIVE) continue; where = (Elf_Addr *)(relocbase + rela->r_offset); *where = (Elf_Addr)(relocbase + rela->r_addend); } } 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) { /* Only sync the cache for non-kernel modules */ if (lf->id != 1) __syncicache(lf->address, lf->size); 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); } diff --git a/sys/sys/imgact_elf.h b/sys/sys/imgact_elf.h index 51e149476a28..3ddb438e14fc 100644 --- a/sys/sys/imgact_elf.h +++ b/sys/sys/imgact_elf.h @@ -1,138 +1,138 @@ /*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1995-1996 Søren Schmidt * All rights reserved. * * 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 * in this position and unchanged. * 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. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. */ #ifndef _SYS_IMGACT_ELF_H_ #define _SYS_IMGACT_ELF_H_ #include #ifdef _KERNEL #define AUXARGS_ENTRY(pos, id, val) \ {(pos)->a_type = (id); (pos)->a_un.a_val = (val); (pos)++;} #if (defined(__LP64__) && __ELF_WORD_SIZE == 32) #define AUXARGS_ENTRY_PTR(pos, id, ptr) \ {(pos)->a_type = (id); (pos)->a_un.a_val = (uintptr_t)(ptr); (pos)++;} #else #define AUXARGS_ENTRY_PTR(pos, id, ptr) \ {(pos)->a_type = (id); (pos)->a_un.a_ptr = (ptr); (pos)++;} #endif struct image_params; struct thread; struct vnode; struct note_info_list; struct sbuf; /* * Structure used to pass information from the loader to the * stack fixup routine. */ typedef struct { Elf_Ssize execfd; Elf_Size phdr; Elf_Size phent; Elf_Size phnum; Elf_Size pagesz; Elf_Size base; Elf_Size flags; Elf_Size entry; Elf_Word hdr_eflags; /* e_flags field from ehdr */ } __ElfN(Auxargs); typedef struct { Elf_Note hdr; const char * vendor; int flags; bool (*trans_osrel)(const Elf_Note *, int32_t *); #define BN_CAN_FETCH_OSREL 0x0001 /* Deprecated. */ #define BN_TRANSLATE_OSREL 0x0002 /* Use trans_osrel to fetch osrel */ /* after checking the image ABI specification, if needed. */ } Elf_Brandnote; typedef struct { int brand; int machine; const char *compat_3_brand; /* pre Binutils 2.10 method (FBSD 3) */ const char *interp_path; struct sysentvec *sysvec; const char *interp_newpath; int flags; Elf_Brandnote *brand_note; - bool (*header_supported)(struct image_params *, - int32_t *, uint32_t *); + bool (*header_supported)(const struct image_params *, + const int32_t *, const uint32_t *); /* High 8 bits of flags is private to the ABI */ #define BI_CAN_EXEC_DYN 0x0001 #define BI_BRAND_NOTE 0x0002 /* May have note.ABI-tag section. */ #define BI_BRAND_NOTE_MANDATORY 0x0004 /* Must have note.ABI-tag section. */ #define BI_BRAND_ONLY_STATIC 0x0008 /* Match only interp-less binaries. */ } __ElfN(Brandinfo); __ElfType(Auxargs); __ElfType(Brandinfo); #define MAX_BRANDS 8 #define FREEBSD_ABI_VENDOR "FreeBSD" #define GNU_ABI_VENDOR "GNU" typedef void (*outfunc_t)(void *, struct sbuf *, size_t *); /* Closure for __elfN(size_segments)(). */ struct sseg_closure { int count; /* Count of writable segments. */ size_t size; /* Total size of all writable segments. */ }; bool __elfN(brand_inuse)(Elf_Brandinfo *entry); int __elfN(insert_brand_entry)(Elf_Brandinfo *entry); int __elfN(remove_brand_entry)(Elf_Brandinfo *entry); int __elfN(freebsd_fixup)(uintptr_t *, struct image_params *); int __elfN(coredump)(struct thread *, struct vnode *, off_t, int); size_t __elfN(populate_note)(int, void *, void *, size_t, void **); int __elfN(freebsd_copyout_auxargs)(struct image_params *, uintptr_t); void __elfN(puthdr)(struct thread *, void *, size_t, int, size_t, int); void __elfN(prepare_notes)(struct thread *, struct note_info_list *, size_t *); void __elfN(size_segments)(struct thread *, struct sseg_closure *, int); size_t __elfN(register_note)(struct thread *, struct note_info_list *, int, outfunc_t, void *); bool __elfN(parse_notes)(struct image_params *, Elf_Note *, const char *, const Elf_Phdr *, bool (*)(const Elf_Note *, void *, bool *), void *); /* Machine specific function to dump per-thread information. */ void __elfN(dump_thread)(struct thread *, void *, size_t *); extern int __elfN(fallback_brand); extern Elf_Brandnote __elfN(freebsd_brandnote); extern Elf_Brandnote __elfN(kfreebsd_brandnote); #endif /* _KERNEL */ #endif /* !_SYS_IMGACT_ELF_H_ */