a608b7d313
Recently a change was made which broke loading 32-bit binaries on powerpc64, with an assertion in ld-elf32.so.1: ld-elf32.so.1: assert failed: /usr/local/poudriere/jails/ppc64/usr/src/libexec/rtld-elf/rtld.c:390 It turns out Elf32_AuxInfo was broken for a very long time on powerpc64, as it uses long and pointers, which are both 64 bits on powerpc64, and only manifested with the recent work on auxargs.
147 lines
5.0 KiB
C
147 lines
5.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2001 David E. O'Brien
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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_ 1
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/*
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* EABI ELF definitions for the PowerPC architecture.
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* See "PowerPC Embedded Application Binary Interface, 32-Bit Impliementation"
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* [ppc-eabi-1995-01.pdf] for details.
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*/
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#ifndef __ELF_WORD_SIZE
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#ifdef __powerpc64__
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#define __ELF_WORD_SIZE 64 /* Used by <sys/elf_generic.h> */
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#else
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#define __ELF_WORD_SIZE 32 /* Used by <sys/elf_generic.h> */
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#endif
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#endif
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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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#include <sys/elf_generic.h>
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#if __ELF_WORD_SIZE == 64
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#define ELF_ARCH EM_PPC64
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#define ELF_MACHINE_OK(x) ((x) == EM_PPC64)
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#else
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#define ELF_ARCH EM_PPC
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#define ELF_ARCH32 EM_PPC
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#define ELF_MACHINE_OK(x) ((x) == EM_PPC)
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#endif
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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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* The PowerPC supplement to the SVR4 ABI specification names this "auxv_t",
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* but POSIX lays claim to all symbols ending with "_t".
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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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#ifdef __powerpc64__
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int a_val; /* Integer value */
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#else
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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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#endif
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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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/* 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 for PowerPC). */
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#define AT_ENTRY 9 /* Where interpreter should transfer control. */
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#define AT_DCACHEBSIZE 10 /* Data cache block size for the processor. */
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#define AT_ICACHEBSIZE 11 /* Instruction cache block size for the uP. */
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#define AT_UCACHEBSIZE 12 /* Cache block size, or `0' if cache not unified. */
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#define AT_EXECPATH 13 /* Path to the executable. */
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#define AT_CANARY 14 /* Canary for SSP */
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#define AT_CANARYLEN 15 /* Length of the canary. */
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#define AT_OSRELDATE 16 /* OSRELDATE. */
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#define AT_NCPUS 17 /* Number of CPUs. */
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#define AT_PAGESIZES 18 /* Pagesizes. */
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#define AT_PAGESIZESLEN 19 /* Number of pagesizes. */
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#define AT_STACKPROT 21 /* Initial stack protection. */
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#define AT_TIMEKEEP 22 /* Pointer to timehands. */
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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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/*
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* Relocation types.
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*/
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#define R_PPC_COUNT 37 /* Count of defined relocation types. */
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/* Count of defined relocation types. */
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#define R_PPC_EMB_COUNT (R_PPC_EMB_RELSDA - R_PPC_EMB_NADDR32 + 1)
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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 ELFDATA2MSB
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#define ELF_TARG_MACH EM_PPC64
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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 ELFDATA2MSB
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#define ELF_TARG_MACH EM_PPC
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#define ELF_TARG_VER 1
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#endif
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#define ET_DYN_LOAD_ADDR 0x01010000
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#endif /* !_MACHINE_ELF_H_ */
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