freebsd-skq/sys/riscv/include/elf.h
mmel be76b77ce7 Add AT_HWCAP2 ELF auxiliary vector.
- allocate value for new AT_HWCAP2 auxiliary vector on all platforms.
 - expand 'struct sysentvec' by new 'u_long *sv_hwcap2', in exactly
   same way as for AT_HWCAP.

MFC after:	1 month
Reviewed by:	kib
Differential Revision:	https://reviews.freebsd.org/D12699
2017-10-21 12:05:01 +00:00

109 lines
3.9 KiB
C

/*-
* 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_
/*
* ELF definitions for the RISC-V architecture.
*/
#include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */
#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>
/*
* Auxiliary vector entries for passing information to the interpreter.
*/
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 */
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);
#define ELF_ARCH EM_RISCV
#define ELF_MACHINE_OK(x) ((x) == (ELF_ARCH))
/* 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). */
#define AT_ENTRY 9 /* Where interpreter should transfer control. */
#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_EXECPATH 15 /* Path to the executable. */
#define AT_CANARY 16 /* Canary for SSP */
#define AT_CANARYLEN 17 /* Length of the canary. */
#define AT_OSRELDATE 18 /* OSRELDATE. */
#define AT_NCPUS 19 /* Number of CPUs. */
#define AT_PAGESIZES 20 /* Pagesizes. */
#define AT_PAGESIZESLEN 21 /* Number of pagesizes. */
#define AT_TIMEKEEP 22 /* Pointer to timehands. */
#define AT_STACKPROT 23 /* Initial stack protection. */
#define AT_EHDRFLAGS 24 /* e_flags field from elf hdr */
#define AT_HWCAP 25 /* CPU feature flags. */
#define AT_HWCAP2 26 /* CPU feature flags 2. */
#define AT_COUNT 27 /* Count of defined aux entry types. */
/* Define "machine" characteristics */
#define ELF_TARG_CLASS ELFCLASS64
#define ELF_TARG_DATA ELFDATA2LSB
#define ELF_TARG_MACH EM_RISCV
#define ELF_TARG_VER 1
/* TODO: set correct value */
#define ET_DYN_LOAD_ADDR 0x100000
#endif /* !_MACHINE_ELF_H_ */