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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 alpha architecture.
*/
#include <sys/elf64.h> /* Definitions common to all 64 bit architectures. */
#define __ELF_WORD_SIZE 64 /* Used by <sys/elf_generic.h> */
#include <sys/elf_generic.h>
#define ELF_ARCH EM_ALPHA
#define ELF_MACHINE_OK(x) ((x) == EM_ALPHA)
/*
* 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 */
long 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. */
/*
* Relocation types.
*/
#define R_ALPHA_NONE 0 /* No reloc */
#define R_ALPHA_REFLONG 1 /* Direct 32 bit */
#define R_ALPHA_REFQUAD 2 /* Direct 64 bit */
#define R_ALPHA_GPREL32 3 /* GP relative 32 bit */
#define R_ALPHA_LITERAL 4 /* GP relative 16 bit w/optimization */
#define R_ALPHA_LITUSE 5 /* Optimization hint for LITERAL */
#define R_ALPHA_GPDISP 6 /* Add displacement to GP */
#define R_ALPHA_BRADDR 7 /* PC+4 relative 23 bit shifted */
#define R_ALPHA_HINT 8 /* PC+4 relative 16 bit shifted */
#define R_ALPHA_SREL16 9 /* PC relative 16 bit */
#define R_ALPHA_SREL32 10 /* PC relative 32 bit */
#define R_ALPHA_SREL64 11 /* PC relative 64 bit */
#define R_ALPHA_OP_PUSH 12 /* OP stack push */
#define R_ALPHA_OP_STORE 13 /* OP stack pop and store */
#define R_ALPHA_OP_PSUB 14 /* OP stack subtract */
#define R_ALPHA_OP_PRSHIFT 15 /* OP stack right shift */
#define R_ALPHA_GPVALUE 16
#define R_ALPHA_GPRELHIGH 17
#define R_ALPHA_GPRELLOW 18
#define R_ALPHA_IMMED_GP_16 19
#define R_ALPHA_IMMED_GP_HI32 20
#define R_ALPHA_IMMED_SCN_HI32 21
#define R_ALPHA_IMMED_BR_HI32 22
#define R_ALPHA_IMMED_LO32 23
#define R_ALPHA_COPY 24 /* Copy symbol at runtime */
#define R_ALPHA_GLOB_DAT 25 /* Create GOT entry */
#define R_ALPHA_JMP_SLOT 26 /* Create PLT entry */
#define R_ALPHA_RELATIVE 27 /* Adjust by program base */
#define R_ALPHA_COUNT 28
/* Define "machine" characteristics */
#define ELF_TARG_CLASS ELFCLASS64
#define ELF_TARG_DATA ELFDATA2LSB
#define ELF_TARG_MACH EM_ALPHA
#define ELF_TARG_VER 1
#ifdef _KERNEL
/*
* On the Alpha we load the dynamic linker where a userland call
* to mmap(0, ...) would put it. The rationale behind this
* calculation is that it leaves room for the heap to grow to
* its maximum allowed size.
*/
#define ELF_RTLD_ADDR(vmspace) \
(round_page((vm_offset_t)(vmspace)->vm_daddr + MAXDSIZ))
#endif
#endif /* !_MACHINE_ELF_H_ */
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