157 lines
4.6 KiB
C
157 lines
4.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* 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
|
|
*/
|
|
|
|
#ifndef _ASM_RISCV_ELF_H
|
|
#define _ASM_RISCV_ELF_H
|
|
|
|
#include <uapi/linux/elf.h>
|
|
#include <linux/compat.h>
|
|
#include <uapi/asm/elf.h>
|
|
#include <asm/auxvec.h>
|
|
#include <asm/byteorder.h>
|
|
#include <asm/cacheinfo.h>
|
|
#include <asm/cpufeature.h>
|
|
|
|
/*
|
|
* These are used to set parameters in the core dumps.
|
|
*/
|
|
#define ELF_ARCH EM_RISCV
|
|
|
|
#ifndef ELF_CLASS
|
|
#ifdef CONFIG_64BIT
|
|
#define ELF_CLASS ELFCLASS64
|
|
#else
|
|
#define ELF_CLASS ELFCLASS32
|
|
#endif
|
|
#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) && \
|
|
((x)->e_ident[EI_CLASS] == ELF_CLASS))
|
|
|
|
extern bool compat_elf_check_arch(Elf32_Ehdr *hdr);
|
|
#define compat_elf_check_arch compat_elf_check_arch
|
|
|
|
#define CORE_DUMP_USE_REGSET
|
|
#define ELF_FDPIC_CORE_EFLAGS 0
|
|
#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 ((DEFAULT_MAP_WINDOW / 3) * 2)
|
|
|
|
#ifdef CONFIG_64BIT
|
|
#define STACK_RND_MASK (is_compat_task() ? \
|
|
0x7ff >> (PAGE_SHIFT - 12) : \
|
|
0x3ffff >> (PAGE_SHIFT - 12))
|
|
#endif
|
|
|
|
/*
|
|
* Provides information on the availiable set of ISA extensions to userspace,
|
|
* via a bitmap that coorespends to each single-letter ISA extension. This is
|
|
* essentially defunct, but will remain for compatibility with userspace.
|
|
*/
|
|
#define ELF_HWCAP riscv_get_elf_hwcap()
|
|
extern unsigned long elf_hwcap;
|
|
|
|
#define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr, dynamic_addr) \
|
|
do { \
|
|
(_r)->a1 = _exec_map_addr; \
|
|
(_r)->a2 = _interp_map_addr; \
|
|
(_r)->a3 = dynamic_addr; \
|
|
} while (0)
|
|
|
|
/*
|
|
* 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 COMPAT_ELF_PLATFORM (NULL)
|
|
|
|
#define ARCH_DLINFO \
|
|
do { \
|
|
/* \
|
|
* Note that we add ulong after elf_addr_t because \
|
|
* casting current->mm->context.vdso triggers a cast \
|
|
* warning of cast from pointer to integer for \
|
|
* COMPAT ELFCLASS32. \
|
|
*/ \
|
|
NEW_AUX_ENT(AT_SYSINFO_EHDR, \
|
|
(elf_addr_t)(ulong)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)); \
|
|
NEW_AUX_ENT(AT_L3_CACHESIZE, \
|
|
get_cache_size(3, CACHE_TYPE_UNIFIED)); \
|
|
NEW_AUX_ENT(AT_L3_CACHEGEOMETRY, \
|
|
get_cache_geometry(3, CACHE_TYPE_UNIFIED)); \
|
|
/* \
|
|
* Should always be nonzero unless there's a kernel bug. \
|
|
* If we haven't determined a sensible value to give to \
|
|
* userspace, omit the entry: \
|
|
*/ \
|
|
if (likely(signal_minsigstksz)) \
|
|
NEW_AUX_ENT(AT_MINSIGSTKSZ, signal_minsigstksz); \
|
|
else \
|
|
NEW_AUX_ENT(AT_IGNORE, 0); \
|
|
} while (0)
|
|
|
|
#ifdef CONFIG_MMU
|
|
#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);
|
|
|
|
#ifdef CONFIG_COMPAT
|
|
|
|
#define SET_PERSONALITY(ex) \
|
|
do { set_compat_task((ex).e_ident[EI_CLASS] == ELFCLASS32); \
|
|
if (personality(current->personality) != PER_LINUX32) \
|
|
set_personality(PER_LINUX | \
|
|
(current->personality & (~PER_MASK))); \
|
|
} while (0)
|
|
|
|
#define COMPAT_ELF_ET_DYN_BASE ((TASK_SIZE_32 / 3) * 2)
|
|
|
|
/* rv32 registers */
|
|
typedef compat_ulong_t compat_elf_greg_t;
|
|
typedef compat_elf_greg_t compat_elf_gregset_t[ELF_NGREG];
|
|
|
|
extern int compat_arch_setup_additional_pages(struct linux_binprm *bprm,
|
|
int uses_interp);
|
|
#define compat_arch_setup_additional_pages \
|
|
compat_arch_setup_additional_pages
|
|
|
|
#endif /* CONFIG_COMPAT */
|
|
#endif /* _ASM_RISCV_ELF_H */
|