mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 13:25:12 +07:00
2129a235c0
This patch contains the code that interfaces with ELF objects on RISC-V systems, the vast majority of which is present to load kernel modules. Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>
85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
/*
|
|
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
|
|
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
|
|
* Copyright (C) 2012 Regents of the University of California
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
#ifndef _ASM_RISCV_ELF_H
|
|
#define _ASM_RISCV_ELF_H
|
|
|
|
#include <uapi/asm/elf.h>
|
|
#include <asm/auxvec.h>
|
|
#include <asm/byteorder.h>
|
|
|
|
/* TODO: Move definition into include/uapi/linux/elf-em.h */
|
|
#define EM_RISCV 0xF3
|
|
|
|
/*
|
|
* These are used to set parameters in the core dumps.
|
|
*/
|
|
#define ELF_ARCH EM_RISCV
|
|
|
|
#ifdef CONFIG_64BIT
|
|
#define ELF_CLASS ELFCLASS64
|
|
#else
|
|
#define ELF_CLASS ELFCLASS32
|
|
#endif
|
|
|
|
#if defined(__LITTLE_ENDIAN)
|
|
#define ELF_DATA ELFDATA2LSB
|
|
#elif defined(__BIG_ENDIAN)
|
|
#define ELF_DATA ELFDATA2MSB
|
|
#else
|
|
#error "Unknown endianness"
|
|
#endif
|
|
|
|
/*
|
|
* This is used to ensure we don't load something for the wrong architecture.
|
|
*/
|
|
#define elf_check_arch(x) ((x)->e_machine == EM_RISCV)
|
|
|
|
#define CORE_DUMP_USE_REGSET
|
|
#define ELF_EXEC_PAGESIZE (PAGE_SIZE)
|
|
|
|
/*
|
|
* This is the location that an ET_DYN program is loaded if exec'ed. Typical
|
|
* use of this is to invoke "./ld.so someprog" to test out a new version of
|
|
* the loader. We need to make sure that it is out of the way of the program
|
|
* that it will "exec", and that there is sufficient room for the brk.
|
|
*/
|
|
#define ELF_ET_DYN_BASE ((TASK_SIZE / 3) * 2)
|
|
|
|
/*
|
|
* This yields a mask that user programs can use to figure out what
|
|
* instruction set this CPU supports. This could be done in user space,
|
|
* but it's not easy, and we've already done it here.
|
|
*/
|
|
#define ELF_HWCAP (elf_hwcap)
|
|
extern unsigned long elf_hwcap;
|
|
|
|
/*
|
|
* This yields a string that ld.so will use to load implementation
|
|
* specific libraries for optimization. This is more specific in
|
|
* intent than poking at uname or /proc/cpuinfo.
|
|
*/
|
|
#define ELF_PLATFORM (NULL)
|
|
|
|
#define ARCH_DLINFO \
|
|
do { \
|
|
NEW_AUX_ENT(AT_SYSINFO_EHDR, \
|
|
(elf_addr_t)current->mm->context.vdso); \
|
|
} while (0)
|
|
|
|
|
|
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
|
|
struct linux_binprm;
|
|
extern int arch_setup_additional_pages(struct linux_binprm *bprm,
|
|
int uses_interp);
|
|
|
|
#endif /* _ASM_RISCV_ELF_H */
|