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Diffstat (limited to 'include/iprt/solaris/kmoddeps.mac')
| -rw-r--r-- | include/iprt/solaris/kmoddeps.mac | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/include/iprt/solaris/kmoddeps.mac b/include/iprt/solaris/kmoddeps.mac new file mode 100644 index 00000000..c9ec53e0 --- /dev/null +++ b/include/iprt/solaris/kmoddeps.mac @@ -0,0 +1,193 @@ +; $Id: kmoddeps.mac $ +;; @file +; Assembly macros for generating Solaris kernel module dependencies +; + +; +; Copyright (C) 2012-2022 Oracle and/or its affiliates. +; +; This file is part of VirtualBox base platform packages, as +; available from https://www.virtualbox.org. +; +; This program is free software; you can redistribute it and/or +; modify it under the terms of the GNU General Public License +; as published by the Free Software Foundation, in version 3 of the +; License. +; +; This program is distributed in the hope that it will be useful, but +; WITHOUT ANY WARRANTY; without even the implied warranty of +; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +; General Public License for more details. +; +; You should have received a copy of the GNU General Public License +; along with this program; if not, see <https://www.gnu.org/licenses>. +; +; The contents of this file may alternatively be used under the terms +; of the Common Development and Distribution License Version 1.0 +; (CDDL), a copy of it is provided in the "COPYING.CDDL" file included +; in the VirtualBox distribution, in which case the provisions of the +; CDDL are applicable instead of those of the GPL. +; +; You may elect to license modified versions of this file under the +; terms and conditions of either the GPL or the CDDL or both. +; +; SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 +; + +; Solaris kernel modules use non-standard ELF constructions to express inter- +; module dependencies, namely a DT_NEEDED tag inside a relocatable ELF file. +; The Solaris linker can generate these automatically; since yasm can't +; produce an ELF file which quite fits Solaris's requirements we create one +; manually using flat binary output format. In order to save unnecessary +; repetition, this file defines macros for the repetitive bits which can be +; reused by the actual dependency objects. Certainly not the nicest way to +; get the effect we want, but probably a reasonable compromise between +; cleanness and required effort. +; + +%ifdef RT_ARCH_AMD64 + +BITS 64 +;; +; Native word size +%define DNAT dq + +;; +; ELF machine number for the current architecture. +%define EM_CUR 62 ; EM_X86_64 + +;; +; ELF header class for the current architecture. +%define CLASS 2 + +%else + +BITS 32 +%define DNAT dd +%define EM_CUR 3 ; EM_386 +%define CLASS 1 + +%endif + +;; +; ELF file header, section tables and shared string table for the dependency +; object. +%macro kmoddeps_header 0 +elf_hdr: ; elfxx_hdr structure + db 7fh, "ELF" ; e_ident + db CLASS, 1, 1 ; e_ident + times 9 db 0 ; padding + dw 1 ; e_type ET_REL + dw EM_CUR ; e_machine + dd 1 ; e_version EV_CURRENT + DNAT 0 ; e_entry + DNAT 0 ; e_phoff + DNAT sect_hdr - $$ ; e_shoff + dd 0 ; e_flags + dw elf_hsize ; e_ehsize + dw 0 ; e_phentsize + dw 0 ; e_phnum + dw sect_hsize ; e_shentsize + dw 4 ; e_shnum + dw 1 ; e_shstrndx section .shstrtab +elf_hsize equ $ - elf_hdr + +sect_hdr: ; elfxx_shdr structure + times sect_hsize db 0 ; undefined section + +sect_hdr1: + dd str_shstrtab ; sh_name .shstrtab + dd 3 ; sh_type SHT_STRTAB + DNAT 20h ; sh_flags SHF_STRINGS + DNAT 0 ; sh_addr + DNAT shstrtab - $$ ; sh_offset + DNAT shstrtab_size ; sh_size + dd 0 ; sh_link + dd 0 ; sh_info + DNAT 1 ; sh_addralign + DNAT 0 ; sh_entsize +sect_hsize equ $ - sect_hdr1 + + dd str_dynstr ; sh_name .dynstr + dd 3 ; sh_type SHT_STRTAB + DNAT 20h ; sh_flags SHF_STRINGS + DNAT 0 ; sh_addr + DNAT dynstr - $$ ; sh_offset + DNAT dynstr_size ; sh_size + dd 0 ; sh_link + dd 0 ; sh_info + DNAT 1 ; sh_addralign + DNAT 0 ; sh_entsize + + dd str_dynamic ; sh_name .dynamic + dd 6 ; sh_type SHT_DYNAMIC + DNAT 1 ; sh_flags SHF_WRITE + DNAT 0 ; sh_addr + DNAT dynamic - $$ ; sh_offset + DNAT dynamic_size ; sh_size + dd 2 ; sh_link .dynstr + dd 0 ; sh_info + DNAT 8 ; sh_addralign + DNAT 0 ; sh_entsize + +shstrtab: +str_shstrtab equ $ - shstrtab + db ".shstrtab", 0 +str_dynstr equ $ - shstrtab + db ".dynstr", 0 +str_dynamic equ $ - shstrtab + db ".dynamic", 0 +shstrtab_size equ $ - shstrtab +%endmacro ; kmoddeps_header + +;; +; Start of the .dynstr section for the dependency object. +%macro kmoddeps_dynstr_start 0 +dynstr: + db 0 +%endmacro + +;; +; A .dynstr string entry for the dependency object. +; The parameters are a symbolic name for the string and the string itself. +%macro kmoddeps_dynstr_string 2 +dynstr_name_%1 equ $ - dynstr + db %2, 0 +%endmacro + +;; +; End of the .dynstr section for the dependency object. +%macro kmoddeps_dynstr_end 0 +dynstr_size equ $ - dynstr +%endmacro + +;; +; Start of the .dynamic section for the dependency object. +%macro kmoddeps_dynamic_start 0 +dynamic: +%endmacro + +;; +; A .dynamic DT_NEEDED entry for the dependency object. +; The parameter is a symbolic string name previously defined using +; @a kmoddeps_dynstr_string. +%macro kmoddeps_dynamic_needed 1 + DNAT 1 ; DT_NEEDED + DNAT dynstr_name_%1 +%endmacro + +;; +; End of the .dynamic section for the dependency object. +%macro kmoddeps_dynamic_end 0 + DNAT 1ah ; DT_FLAGS + DNAT 4 ; TEXTREL + DNAT 6ffffffbh ; DT_FLAGS1 + DNAT 0 + DNAT 601900h ; SUNW_STRPAD + DNAT 200h + DNAT 601b00h ; SUNW_LDMACH + DNAT 62 ; EM_X86_64 + times 22 DNAT 0 ; padding +dynamic_size equ $ - dynamic +%endmacro ; kmoddeps_dynamic_end + |