9dcf90f8ad
Right now I'm using two Raspberry Pi's (2 and 3) to test CloudABI support for armv6, armv7 and aarch64. It would be nice if I could restrict this to just a single instance when testing smaller changes. This is why I'd like to get COMPAT_CLOUDABI32 to work on arm64. As COMPAT_CLOUDABI32 depends on COMPAT_FREEBSD32, at least for the ELF loading, this change adds all of the bits necessary to at least build a kernel with COMPAT_FREEBSD32. All of the machine dependent system calls are still stubbed out, for the reason that implementations for these are only useful if actual support for running FreeBSD binaries is added. This is outside the scope of this work. Reviewed by: andrew Differential Revision: https://reviews.freebsd.org/D13144
118 lines
4.1 KiB
C
118 lines
4.1 KiB
C
/*-
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* Copyright (c) 1996-1997 John D. Polstra.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_ELF_H_
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#define _MACHINE_ELF_H_
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/*
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* ELF definitions for the AArch64 architecture.
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*/
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#include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */
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#include <sys/elf64.h> /* Definitions common to all 64 bit architectures. */
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#ifndef __ELF_WORD_SIZE
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#define __ELF_WORD_SIZE 64 /* Used by <sys/elf_generic.h> */
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#endif
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#include <sys/elf_generic.h>
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/*
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* Auxiliary vector entries for passing information to the interpreter.
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*/
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typedef struct { /* Auxiliary vector entry on initial stack */
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int a_type; /* Entry type. */
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union {
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int a_val; /* Integer value. */
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} a_un;
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} Elf32_Auxinfo;
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typedef struct { /* Auxiliary vector entry on initial stack */
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long a_type; /* Entry type. */
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union {
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long a_val; /* Integer value. */
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void *a_ptr; /* Address. */
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void (*a_fcn)(void); /* Function pointer (not used). */
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} a_un;
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} Elf64_Auxinfo;
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__ElfType(Auxinfo);
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#define ELF_ARCH EM_AARCH64
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#define ELF_MACHINE_OK(x) ((x) == (ELF_ARCH))
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/* Values for a_type. */
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#define AT_NULL 0 /* Terminates the vector. */
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#define AT_IGNORE 1 /* Ignored entry. */
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#define AT_EXECFD 2 /* File descriptor of program to load. */
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#define AT_PHDR 3 /* Program header of program already loaded. */
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#define AT_PHENT 4 /* Size of each program header entry. */
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#define AT_PHNUM 5 /* Number of program header entries. */
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#define AT_PAGESZ 6 /* Page size in bytes. */
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#define AT_BASE 7 /* Interpreter's base address. */
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#define AT_FLAGS 8 /* Flags (unused). */
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#define AT_ENTRY 9 /* Where interpreter should transfer control. */
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#define AT_NOTELF 10 /* Program is not ELF ?? */
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#define AT_UID 11 /* Real uid. */
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#define AT_EUID 12 /* Effective uid. */
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#define AT_GID 13 /* Real gid. */
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#define AT_EGID 14 /* Effective gid. */
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#define AT_EXECPATH 15 /* Path to the executable. */
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#define AT_CANARY 16 /* Canary for SSP */
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#define AT_CANARYLEN 17 /* Length of the canary. */
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#define AT_OSRELDATE 18 /* OSRELDATE. */
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#define AT_NCPUS 19 /* Number of CPUs. */
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#define AT_PAGESIZES 20 /* Pagesizes. */
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#define AT_PAGESIZESLEN 21 /* Number of pagesizes. */
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#define AT_TIMEKEEP 22 /* Pointer to timehands. */
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#define AT_STACKPROT 23 /* Initial stack protection. */
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#define AT_EHDRFLAGS 24 /* e_flags field from elf hdr */
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#define AT_HWCAP 25 /* CPU feature flags. */
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#define AT_HWCAP2 26 /* CPU feature flags 2. */
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#define AT_COUNT 27 /* Count of defined aux entry types. */
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/* Define "machine" characteristics */
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#if __ELF_WORD_SIZE == 64
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#define ELF_TARG_CLASS ELFCLASS64
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#define ELF_TARG_DATA ELFDATA2LSB
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#define ELF_TARG_MACH EM_AARCH64
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#define ELF_TARG_VER 1
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#else
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#define ELF_TARG_CLASS ELFCLASS32
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#define ELF_TARG_DATA ELFDATA2LSB
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#define ELF_TARG_MACH EM_ARM
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#define ELF_TARG_VER 1
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#endif
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#define ET_DYN_LOAD_ADDR 0x100000
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#endif /* !_MACHINE_ELF_H_ */
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