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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2003 Matjaz Breskvar <[email protected]>
* Copyright (C) 2010-2011 Jonas Bonn <[email protected]>
* Copyright (C) 2012 Regents of the University of California
*/
#ifndef _ASM_RISCV_ELF_H
#define _ASM_RISCV_ELF_H
#include <uapi/asm/elf.h>
#include <asm/auxvec.h>
#include <asm/byteorder.h>
#include <asm/cacheinfo.h>
/*
* 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
#define ELF_DATA ELFDATA2LSB
/*
* 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)
#ifdef CONFIG_64BIT
#define STACK_RND_MASK (0x3ffff >> (PAGE_SHIFT - 12))
#endif
/*
* 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)
#ifdef CONFIG_MMU
#define ARCH_DLINFO \
do { \
NEW_AUX_ENT(AT_SYSINFO_EHDR, \
(elf_addr_t)current->mm->context.vdso); \
NEW_AUX_ENT(AT_L1I_CACHESIZE, \
get_cache_size(1, CACHE_TYPE_INST)); \
NEW_AUX_ENT(AT_L1I_CACHEGEOMETRY, \
get_cache_geometry(1, CACHE_TYPE_INST)); \
NEW_AUX_ENT(AT_L1D_CACHESIZE, \
get_cache_size(1, CACHE_TYPE_DATA)); \
NEW_AUX_ENT(AT_L1D_CACHEGEOMETRY, \
get_cache_geometry(1, CACHE_TYPE_DATA)); \
NEW_AUX_ENT(AT_L2_CACHESIZE, \
get_cache_size(2, CACHE_TYPE_UNIFIED)); \
NEW_AUX_ENT(AT_L2_CACHEGEOMETRY, \
get_cache_geometry(2, CACHE_TYPE_UNIFIED)); \
} 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 /* CONFIG_MMU */
#define ELF_CORE_COPY_REGS(dest, regs) \
do { \
*(struct user_regs_struct *)&(dest) = \
*(struct user_regs_struct *)regs; \
} while (0);
#endif /* _ASM_RISCV_ELF_H */