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c460ac3a00
systems where the data/stack/etc limits are too big for a 32 bit process. Move the 5 or so identical instances of ELF_RTLD_ADDR() into imgact_elf.c. Supply an ia32_fixlimits function. Export the clip/default values to sysctl under the compat.ia32 heirarchy. Have mmap(0, ...) respect the current p->p_limits[RLIMIT_DATA].rlim_max value rather than the sysctl tweakable variable. This allows mmap to place mappings at sensible locations when limits have been reduced. Have the imgact_elf.c ld-elf.so.1 placement algorithm use the same method as mmap(0, ...) now does. Note that we cannot remove all references to the sysctl tweakable maxdsiz etc variables because /etc/login.conf specifies a datasize of 'unlimited'. And that causes exec etc to fail since it can no longer find space to mmap things.
239 lines
9.2 KiB
C
239 lines
9.2 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_ 1
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/*
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* ELF definitions for the IA-64 architecture.
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*/
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#ifndef __ELF_WORD_SIZE
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#define __ELF_WORD_SIZE 64
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#endif
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#include <sys/elf64.h> /* Definitions common to all 64 bit architectures. */
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#include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */
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#include <sys/elf_generic.h>
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#define ELF_ARCH EM_IA_64
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#define ELF_MACHINE_OK(x) ((x) == EM_IA_64)
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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 i386 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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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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int 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 i386). */
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#define AT_ENTRY 9 /* Where interpreter should transfer control. */
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/*
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* The following non-standard values are used for passing information
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* from John Polstra's testbed program to the dynamic linker. These
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* are expected to go away soon.
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*
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* Unfortunately, these overlap the Linux non-standard values, so they
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* must not be used in the same context.
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*/
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#define AT_BRK 10 /* Starting point for sbrk and brk. */
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#define AT_DEBUG 11 /* Debugging level. */
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/*
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* The following non-standard values are used in Linux ELF binaries.
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*/
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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_COUNT 15 /* Count of defined aux entry types. */
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/*
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* Values for e_flags.
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*/
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#define EF_IA_64_MASKOS 0x00ff000f
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#define EF_IA_64_ABI64 0x00000010
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#define EF_IA_64_REDUCEDFP 0x00000020
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#define EF_IA_64_CONS_GP 0x00000040
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#define EF_IA_64_NOFUNCDESC_CONS_GP 0x00000080
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#define EF_IA_64_ABSOLUTE 0x00000100
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#define EF_IA_64_ARCH 0xff000000
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/*
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* Segment types.
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*/
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#define PT_IA_64_ARCHEXT 0x70000000
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#define PT_IA_64_UNWIND 0x70000001
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/*
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* Segment attributes.
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*/
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#define PF_IA_64_NORECOV 0x80000000
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/*
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* Section types.
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*/
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#define SHT_IA_64_EXT 0x70000000
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#define SHT_IA_64_UNWIND 0x70000001
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#define SHT_IA_64_LOPSREG 0x78000000
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#define SHT_IA_64_HIPSREG 0x7fffffff
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/*
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* Section attribute flags.
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*/
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#define SHF_IA_64_SHORT 0x10000000
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#define SHF_IA_64_NORECOV 0x20000000
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/*
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* Relocation types.
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*/
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/* Name Value Field Calculation */
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#define R_IA64_NONE 0 /* None */
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#define R_IA64_IMM14 0x21 /* immediate14 S + A */
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#define R_IA64_IMM22 0x22 /* immediate22 S + A */
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#define R_IA64_IMM64 0x23 /* immediate64 S + A */
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#define R_IA64_DIR32MSB 0x24 /* word32 MSB S + A */
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#define R_IA64_DIR32LSB 0x25 /* word32 LSB S + A */
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#define R_IA64_DIR64MSB 0x26 /* word64 MSB S + A */
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#define R_IA64_DIR64LSB 0x27 /* word64 LSB S + A */
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#define R_IA64_GPREL22 0x2a /* immediate22 @gprel(S + A) */
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#define R_IA64_GPREL64I 0x2b /* immediate64 @gprel(S + A) */
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#define R_IA64_GPREL64MSB 0x2e /* word64 MSB @gprel(S + A) */
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#define R_IA64_GPREL64LSB 0x2f /* word64 LSB @gprel(S + A) */
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#define R_IA64_LTOFF22 0x32 /* immediate22 @ltoff(S + A) */
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#define R_IA64_LTOFF64I 0x33 /* immediate64 @ltoff(S + A) */
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#define R_IA64_PLTOFF22 0x3a /* immediate22 @pltoff(S + A) */
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#define R_IA64_PLTOFF64I 0x3b /* immediate64 @pltoff(S + A) */
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#define R_IA64_PLTOFF64MSB 0x3e /* word64 MSB @pltoff(S + A) */
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#define R_IA64_PLTOFF64LSB 0x3f /* word64 LSB @pltoff(S + A) */
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#define R_IA64_FPTR64I 0x43 /* immediate64 @fptr(S + A) */
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#define R_IA64_FPTR32MSB 0x44 /* word32 MSB @fptr(S + A) */
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#define R_IA64_FPTR32LSB 0x45 /* word32 LSB @fptr(S + A) */
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#define R_IA64_FPTR64MSB 0x46 /* word64 MSB @fptr(S + A) */
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#define R_IA64_FPTR64LSB 0x47 /* word64 LSB @fptr(S + A) */
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#define R_IA64_PCREL21B 0x49 /* immediate21 form1 S + A - P */
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#define R_IA64_PCREL21M 0x4a /* immediate21 form2 S + A - P */
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#define R_IA64_PCREL21F 0x4b /* immediate21 form3 S + A - P */
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#define R_IA64_PCREL32MSB 0x4c /* word32 MSB S + A - P */
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#define R_IA64_PCREL32LSB 0x4d /* word32 LSB S + A - P */
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#define R_IA64_PCREL64MSB 0x4e /* word64 MSB S + A - P */
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#define R_IA64_PCREL64LSB 0x4f /* word64 LSB S + A - P */
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#define R_IA64_LTOFF_FPTR22 0x52 /* immediate22 @ltoff(@fptr(S + A)) */
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#define R_IA64_LTOFF_FPTR64I 0x53 /* immediate64 @ltoff(@fptr(S + A)) */
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#define R_IA64_LTOFF_FPTR32MSB 0x54 /* word32 MSB @ltoff(@fptr(S + A)) */
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#define R_IA64_LTOFF_FPTR32LSB 0x55 /* word32 LSB @ltoff(@fptr(S + A)) */
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#define R_IA64_LTOFF_FPTR64MSB 0x56 /* word64 MSB @ltoff(@fptr(S + A)) */
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#define R_IA64_LTOFF_FPTR64LSB 0x57 /* word64 LSB @ltoff(@fptr(S + A)) */
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#define R_IA64_SEGREL32MSB 0x5c /* word32 MSB @segrel(S + A) */
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#define R_IA64_SEGREL32LSB 0x5d /* word32 LSB @segrel(S + A) */
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#define R_IA64_SEGREL64MSB 0x5e /* word64 MSB @segrel(S + A) */
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#define R_IA64_SEGREL64LSB 0x5f /* word64 LSB @segrel(S + A) */
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#define R_IA64_SECREL32MSB 0x64 /* word32 MSB @secrel(S + A) */
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#define R_IA64_SECREL32LSB 0x65 /* word32 LSB @secrel(S + A) */
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#define R_IA64_SECREL64MSB 0x66 /* word64 MSB @secrel(S + A) */
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#define R_IA64_SECREL64LSB 0x67 /* word64 LSB @secrel(S + A) */
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#define R_IA64_REL32MSB 0x6c /* word32 MSB BD + A */
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#define R_IA64_REL32LSB 0x6d /* word32 LSB BD + A */
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#define R_IA64_REL64MSB 0x6e /* word64 MSB BD + A */
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#define R_IA64_REL64LSB 0x6f /* word64 LSB BD + A */
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#define R_IA64_LTV32MSB 0x74 /* word32 MSB S + A */
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#define R_IA64_LTV32LSB 0x75 /* word32 LSB S + A */
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#define R_IA64_LTV64MSB 0x76 /* word64 MSB S + A */
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#define R_IA64_LTV64LSB 0x77 /* word64 LSB S + A */
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#define R_IA64_IPLTMSB 0x80 /* function descriptor MSB special */
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#define R_IA64_IPLTLSB 0x81 /* function descriptor LSB speciaal */
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#define R_IA64_SUB 0x85 /* immediate64 A - S */
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#define R_IA64_LTOFF22X 0x86 /* immediate22 special */
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#define R_IA64_LDXMOV 0x87 /* immediate22 special */
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#define R_IA64_TPREL14 0x91 /* imm14 @tprel(S + A) */
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#define R_IA64_TPREL22 0x92 /* imm22 @tprel(S + A) */
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#define R_IA64_TPREL64I 0x93 /* imm64 @tprel(S + A) */
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#define R_IA64_TPREL64MSB 0x96 /* word64 MSB @tprel(S + A) */
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#define R_IA64_TPREL64LSB 0x97 /* word64 LSB @tprel(S + A) */
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#define R_IA64_LTOFF_TPREL22 0x9a /* imm22 @ltoff(@tprel(S+A)) */
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#define R_IA64_DTPMOD64MSB 0xa6 /* word64 MSB @dtpmod(S + A) */
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#define R_IA64_DTPMOD64LSB 0xa7 /* word64 LSB @dtpmod(S + A) */
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#define R_IA64_LTOFF_DTPMOD22 0xaa /* imm22 @ltoff(@dtpmod(S+A)) */
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#define R_IA64_DTPREL14 0xb1 /* imm14 @dtprel(S + A) */
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#define R_IA64_DTPREL22 0xb2 /* imm22 @dtprel(S + A) */
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#define R_IA64_DTPREL64I 0xb3 /* imm64 @dtprel(S + A) */
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#define R_IA64_DTPREL32MSB 0xb4 /* word32 MSB @dtprel(S + A) */
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#define R_IA64_DTPREL32LSB 0xb5 /* word32 LSB @dtprel(S + A) */
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#define R_IA64_DTPREL64MSB 0xb6 /* word64 MSB @dtprel(S + A) */
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#define R_IA64_DTPREL64LSB 0xb7 /* word64 LSB @dtprel(S + A) */
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#define R_IA64_LTOFF_DTPREL22 0xba /* imm22 @ltoff(@dtprel(S+A)) */
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/* Define "machine" characteristics */
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#if __ELF_WORD_SIZE == 32
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#define ELF_TARG_CLASS ELFCLASS32
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#else
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#define ELF_TARG_CLASS ELFCLASS64
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#endif
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#define ELF_TARG_DATA ELFDATA2LSB
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#define ELF_TARG_MACH EM_IA_64
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#define ELF_TARG_VER 1
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/* Processor specific dynmamic section tags. */
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#define DT_IA64_PLT_RESERVE 0x70000000
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#endif /* !_MACHINE_ELF_H_ */
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