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freebsd-dev/sys/ia64/include/elf.h
Peter Wemm c460ac3a00 Add sysentvec->sv_fixlimits() hook so that we can catch cases on 64 bit 
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.
2003-09-25 01:10:26 +00:00

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/*-
* Copyright (c) 1996-1997 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 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.
*
* $FreeBSD$
*/
#ifndef _MACHINE_ELF_H_
#define _MACHINE_ELF_H_ 1
/*
* ELF definitions for the IA-64 architecture.
*/
#ifndef __ELF_WORD_SIZE
#define __ELF_WORD_SIZE 64
#endif
#include <sys/elf64.h> /* Definitions common to all 64 bit architectures. */
#include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */
#include <sys/elf_generic.h>
#define ELF_ARCH EM_IA_64
#define ELF_MACHINE_OK(x) ((x) == EM_IA_64)
/*
* Auxiliary vector entries for passing information to the interpreter.
*
* The i386 supplement to the SVR4 ABI specification names this "auxv_t",
* but POSIX lays claim to all symbols ending with "_t".
*/
typedef struct { /* Auxiliary vector entry on initial stack */
int a_type; /* Entry type. */
union {
int a_val; /* Integer value. */
} a_un;
} Elf32_Auxinfo;
typedef struct { /* Auxiliary vector entry on initial stack */
int a_type; /* Entry type. */
union {
long a_val; /* Integer value. */
void *a_ptr; /* Address. */
void (*a_fcn)(void); /* Function pointer (not used). */
} a_un;
} Elf64_Auxinfo;
__ElfType(Auxinfo);
/* Values for a_type. */
#define AT_NULL 0 /* Terminates the vector. */
#define AT_IGNORE 1 /* Ignored entry. */
#define AT_EXECFD 2 /* File descriptor of program to load. */
#define AT_PHDR 3 /* Program header of program already loaded. */
#define AT_PHENT 4 /* Size of each program header entry. */
#define AT_PHNUM 5 /* Number of program header entries. */
#define AT_PAGESZ 6 /* Page size in bytes. */
#define AT_BASE 7 /* Interpreter's base address. */
#define AT_FLAGS 8 /* Flags (unused for i386). */
#define AT_ENTRY 9 /* Where interpreter should transfer control. */
/*
* The following non-standard values are used for passing information
* from John Polstra's testbed program to the dynamic linker. These
* are expected to go away soon.
*
* Unfortunately, these overlap the Linux non-standard values, so they
* must not be used in the same context.
*/
#define AT_BRK 10 /* Starting point for sbrk and brk. */
#define AT_DEBUG 11 /* Debugging level. */
/*
* The following non-standard values are used in Linux ELF binaries.
*/
#define AT_NOTELF 10 /* Program is not ELF ?? */
#define AT_UID 11 /* Real uid. */
#define AT_EUID 12 /* Effective uid. */
#define AT_GID 13 /* Real gid. */
#define AT_EGID 14 /* Effective gid. */
#define AT_COUNT 15 /* Count of defined aux entry types. */
/*
* Values for e_flags.
*/
#define EF_IA_64_MASKOS 0x00ff000f
#define EF_IA_64_ABI64 0x00000010
#define EF_IA_64_REDUCEDFP 0x00000020
#define EF_IA_64_CONS_GP 0x00000040
#define EF_IA_64_NOFUNCDESC_CONS_GP 0x00000080
#define EF_IA_64_ABSOLUTE 0x00000100
#define EF_IA_64_ARCH 0xff000000
/*
* Segment types.
*/
#define PT_IA_64_ARCHEXT 0x70000000
#define PT_IA_64_UNWIND 0x70000001
/*
* Segment attributes.
*/
#define PF_IA_64_NORECOV 0x80000000
/*
* Section types.
*/
#define SHT_IA_64_EXT 0x70000000
#define SHT_IA_64_UNWIND 0x70000001
#define SHT_IA_64_LOPSREG 0x78000000
#define SHT_IA_64_HIPSREG 0x7fffffff
/*
* Section attribute flags.
*/
#define SHF_IA_64_SHORT 0x10000000
#define SHF_IA_64_NORECOV 0x20000000
/*
* Relocation types.
*/
/* Name Value Field Calculation */
#define R_IA64_NONE 0 /* None */
#define R_IA64_IMM14 0x21 /* immediate14 S + A */
#define R_IA64_IMM22 0x22 /* immediate22 S + A */
#define R_IA64_IMM64 0x23 /* immediate64 S + A */
#define R_IA64_DIR32MSB 0x24 /* word32 MSB S + A */
#define R_IA64_DIR32LSB 0x25 /* word32 LSB S + A */
#define R_IA64_DIR64MSB 0x26 /* word64 MSB S + A */
#define R_IA64_DIR64LSB 0x27 /* word64 LSB S + A */
#define R_IA64_GPREL22 0x2a /* immediate22 @gprel(S + A) */
#define R_IA64_GPREL64I 0x2b /* immediate64 @gprel(S + A) */
#define R_IA64_GPREL64MSB 0x2e /* word64 MSB @gprel(S + A) */
#define R_IA64_GPREL64LSB 0x2f /* word64 LSB @gprel(S + A) */
#define R_IA64_LTOFF22 0x32 /* immediate22 @ltoff(S + A) */
#define R_IA64_LTOFF64I 0x33 /* immediate64 @ltoff(S + A) */
#define R_IA64_PLTOFF22 0x3a /* immediate22 @pltoff(S + A) */
#define R_IA64_PLTOFF64I 0x3b /* immediate64 @pltoff(S + A) */
#define R_IA64_PLTOFF64MSB 0x3e /* word64 MSB @pltoff(S + A) */
#define R_IA64_PLTOFF64LSB 0x3f /* word64 LSB @pltoff(S + A) */
#define R_IA64_FPTR64I 0x43 /* immediate64 @fptr(S + A) */
#define R_IA64_FPTR32MSB 0x44 /* word32 MSB @fptr(S + A) */
#define R_IA64_FPTR32LSB 0x45 /* word32 LSB @fptr(S + A) */
#define R_IA64_FPTR64MSB 0x46 /* word64 MSB @fptr(S + A) */
#define R_IA64_FPTR64LSB 0x47 /* word64 LSB @fptr(S + A) */
#define R_IA64_PCREL21B 0x49 /* immediate21 form1 S + A - P */
#define R_IA64_PCREL21M 0x4a /* immediate21 form2 S + A - P */
#define R_IA64_PCREL21F 0x4b /* immediate21 form3 S + A - P */
#define R_IA64_PCREL32MSB 0x4c /* word32 MSB S + A - P */
#define R_IA64_PCREL32LSB 0x4d /* word32 LSB S + A - P */
#define R_IA64_PCREL64MSB 0x4e /* word64 MSB S + A - P */
#define R_IA64_PCREL64LSB 0x4f /* word64 LSB S + A - P */
#define R_IA64_LTOFF_FPTR22 0x52 /* immediate22 @ltoff(@fptr(S + A)) */
#define R_IA64_LTOFF_FPTR64I 0x53 /* immediate64 @ltoff(@fptr(S + A)) */
#define R_IA64_LTOFF_FPTR32MSB 0x54 /* word32 MSB @ltoff(@fptr(S + A)) */
#define R_IA64_LTOFF_FPTR32LSB 0x55 /* word32 LSB @ltoff(@fptr(S + A)) */
#define R_IA64_LTOFF_FPTR64MSB 0x56 /* word64 MSB @ltoff(@fptr(S + A)) */
#define R_IA64_LTOFF_FPTR64LSB 0x57 /* word64 LSB @ltoff(@fptr(S + A)) */
#define R_IA64_SEGREL32MSB 0x5c /* word32 MSB @segrel(S + A) */
#define R_IA64_SEGREL32LSB 0x5d /* word32 LSB @segrel(S + A) */
#define R_IA64_SEGREL64MSB 0x5e /* word64 MSB @segrel(S + A) */
#define R_IA64_SEGREL64LSB 0x5f /* word64 LSB @segrel(S + A) */
#define R_IA64_SECREL32MSB 0x64 /* word32 MSB @secrel(S + A) */
#define R_IA64_SECREL32LSB 0x65 /* word32 LSB @secrel(S + A) */
#define R_IA64_SECREL64MSB 0x66 /* word64 MSB @secrel(S + A) */
#define R_IA64_SECREL64LSB 0x67 /* word64 LSB @secrel(S + A) */
#define R_IA64_REL32MSB 0x6c /* word32 MSB BD + A */
#define R_IA64_REL32LSB 0x6d /* word32 LSB BD + A */
#define R_IA64_REL64MSB 0x6e /* word64 MSB BD + A */
#define R_IA64_REL64LSB 0x6f /* word64 LSB BD + A */
#define R_IA64_LTV32MSB 0x74 /* word32 MSB S + A */
#define R_IA64_LTV32LSB 0x75 /* word32 LSB S + A */
#define R_IA64_LTV64MSB 0x76 /* word64 MSB S + A */
#define R_IA64_LTV64LSB 0x77 /* word64 LSB S + A */
#define R_IA64_IPLTMSB 0x80 /* function descriptor MSB special */
#define R_IA64_IPLTLSB 0x81 /* function descriptor LSB speciaal */
#define R_IA64_SUB 0x85 /* immediate64 A - S */
#define R_IA64_LTOFF22X 0x86 /* immediate22 special */
#define R_IA64_LDXMOV 0x87 /* immediate22 special */
#define R_IA64_TPREL14 0x91 /* imm14 @tprel(S + A) */
#define R_IA64_TPREL22 0x92 /* imm22 @tprel(S + A) */
#define R_IA64_TPREL64I 0x93 /* imm64 @tprel(S + A) */
#define R_IA64_TPREL64MSB 0x96 /* word64 MSB @tprel(S + A) */
#define R_IA64_TPREL64LSB 0x97 /* word64 LSB @tprel(S + A) */
#define R_IA64_LTOFF_TPREL22 0x9a /* imm22 @ltoff(@tprel(S+A)) */
#define R_IA64_DTPMOD64MSB 0xa6 /* word64 MSB @dtpmod(S + A) */
#define R_IA64_DTPMOD64LSB 0xa7 /* word64 LSB @dtpmod(S + A) */
#define R_IA64_LTOFF_DTPMOD22 0xaa /* imm22 @ltoff(@dtpmod(S+A)) */
#define R_IA64_DTPREL14 0xb1 /* imm14 @dtprel(S + A) */
#define R_IA64_DTPREL22 0xb2 /* imm22 @dtprel(S + A) */
#define R_IA64_DTPREL64I 0xb3 /* imm64 @dtprel(S + A) */
#define R_IA64_DTPREL32MSB 0xb4 /* word32 MSB @dtprel(S + A) */
#define R_IA64_DTPREL32LSB 0xb5 /* word32 LSB @dtprel(S + A) */
#define R_IA64_DTPREL64MSB 0xb6 /* word64 MSB @dtprel(S + A) */
#define R_IA64_DTPREL64LSB 0xb7 /* word64 LSB @dtprel(S + A) */
#define R_IA64_LTOFF_DTPREL22 0xba /* imm22 @ltoff(@dtprel(S+A)) */
/* Define "machine" characteristics */
#if __ELF_WORD_SIZE == 32
#define ELF_TARG_CLASS ELFCLASS32
#else
#define ELF_TARG_CLASS ELFCLASS64
#endif
#define ELF_TARG_DATA ELFDATA2LSB
#define ELF_TARG_MACH EM_IA_64
#define ELF_TARG_VER 1
/* Processor specific dynmamic section tags. */
#define DT_IA64_PLT_RESERVE 0x70000000
#endif /* !_MACHINE_ELF_H_ */
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