237 lines
6.6 KiB
C
237 lines
6.6 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2012 ARM Ltd.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License version 2 as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
#ifndef __ASM_ELF_H
|
||
|
|
#define __ASM_ELF_H
|
||
|
|
|
||
|
|
#include <asm/hwcap.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* ELF register definitions..
|
||
|
|
*/
|
||
|
|
#include <asm/ptrace.h>
|
||
|
|
#include <asm/user.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* AArch64 static relocation types.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Miscellaneous. */
|
||
|
|
#define R_ARM_NONE 0
|
||
|
|
#define R_AARCH64_NONE 256
|
||
|
|
|
||
|
|
/* Data. */
|
||
|
|
#define R_AARCH64_ABS64 257
|
||
|
|
#define R_AARCH64_ABS32 258
|
||
|
|
#define R_AARCH64_ABS16 259
|
||
|
|
#define R_AARCH64_PREL64 260
|
||
|
|
#define R_AARCH64_PREL32 261
|
||
|
|
#define R_AARCH64_PREL16 262
|
||
|
|
|
||
|
|
/* Instructions. */
|
||
|
|
#define R_AARCH64_MOVW_UABS_G0 263
|
||
|
|
#define R_AARCH64_MOVW_UABS_G0_NC 264
|
||
|
|
#define R_AARCH64_MOVW_UABS_G1 265
|
||
|
|
#define R_AARCH64_MOVW_UABS_G1_NC 266
|
||
|
|
#define R_AARCH64_MOVW_UABS_G2 267
|
||
|
|
#define R_AARCH64_MOVW_UABS_G2_NC 268
|
||
|
|
#define R_AARCH64_MOVW_UABS_G3 269
|
||
|
|
|
||
|
|
#define R_AARCH64_MOVW_SABS_G0 270
|
||
|
|
#define R_AARCH64_MOVW_SABS_G1 271
|
||
|
|
#define R_AARCH64_MOVW_SABS_G2 272
|
||
|
|
|
||
|
|
#define R_AARCH64_LD_PREL_LO19 273
|
||
|
|
#define R_AARCH64_ADR_PREL_LO21 274
|
||
|
|
#define R_AARCH64_ADR_PREL_PG_HI21 275
|
||
|
|
#define R_AARCH64_ADR_PREL_PG_HI21_NC 276
|
||
|
|
#define R_AARCH64_ADD_ABS_LO12_NC 277
|
||
|
|
#define R_AARCH64_LDST8_ABS_LO12_NC 278
|
||
|
|
|
||
|
|
#define R_AARCH64_TSTBR14 279
|
||
|
|
#define R_AARCH64_CONDBR19 280
|
||
|
|
#define R_AARCH64_JUMP26 282
|
||
|
|
#define R_AARCH64_CALL26 283
|
||
|
|
#define R_AARCH64_LDST16_ABS_LO12_NC 284
|
||
|
|
#define R_AARCH64_LDST32_ABS_LO12_NC 285
|
||
|
|
#define R_AARCH64_LDST64_ABS_LO12_NC 286
|
||
|
|
#define R_AARCH64_LDST128_ABS_LO12_NC 299
|
||
|
|
|
||
|
|
#define R_AARCH64_MOVW_PREL_G0 287
|
||
|
|
#define R_AARCH64_MOVW_PREL_G0_NC 288
|
||
|
|
#define R_AARCH64_MOVW_PREL_G1 289
|
||
|
|
#define R_AARCH64_MOVW_PREL_G1_NC 290
|
||
|
|
#define R_AARCH64_MOVW_PREL_G2 291
|
||
|
|
#define R_AARCH64_MOVW_PREL_G2_NC 292
|
||
|
|
#define R_AARCH64_MOVW_PREL_G3 293
|
||
|
|
|
||
|
|
#define R_AARCH64_RELATIVE 1027
|
||
|
|
|
||
|
|
/*
|
||
|
|
* These are used to set parameters in the core dumps.
|
||
|
|
*/
|
||
|
|
#define ELF_CLASS ELFCLASS64
|
||
|
|
#ifdef __AARCH64EB__
|
||
|
|
#define ELF_DATA ELFDATA2MSB
|
||
|
|
#else
|
||
|
|
#define ELF_DATA ELFDATA2LSB
|
||
|
|
#endif
|
||
|
|
#define ELF_ARCH EM_AARCH64
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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_SIZE 16
|
||
|
|
#ifdef __AARCH64EB__
|
||
|
|
#define ELF_PLATFORM ("aarch64_be")
|
||
|
|
#else
|
||
|
|
#define ELF_PLATFORM ("aarch64")
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This is used to ensure we don't load something for the wrong architecture.
|
||
|
|
*/
|
||
|
|
#define elf_check_arch(x) ((x)->e_machine == EM_AARCH64)
|
||
|
|
|
||
|
|
#define elf_read_implies_exec(ex,stk) (stk != EXSTACK_DISABLE_X)
|
||
|
|
|
||
|
|
#define CORE_DUMP_USE_REGSET
|
||
|
|
#define ELF_EXEC_PAGESIZE PAGE_SIZE
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This is the base location for PIE (ET_DYN with INTERP) loads. On
|
||
|
|
* 64-bit, this is above 4GB to leave the entire 32-bit address
|
||
|
|
* space open for things that want to use the area for 32-bit pointers.
|
||
|
|
*/
|
||
|
|
#define ELF_ET_DYN_BASE (2 * TASK_SIZE_64 / 3)
|
||
|
|
|
||
|
|
#ifndef __ASSEMBLY__
|
||
|
|
|
||
|
|
#include <linux/bug.h>
|
||
|
|
#include <asm/processor.h> /* for signal_minsigstksz, used by ARCH_DLINFO */
|
||
|
|
|
||
|
|
typedef unsigned long elf_greg_t;
|
||
|
|
|
||
|
|
#define ELF_NGREG (sizeof(struct user_pt_regs) / sizeof(elf_greg_t))
|
||
|
|
#define ELF_CORE_COPY_REGS(dest, regs) \
|
||
|
|
*(struct user_pt_regs *)&(dest) = (regs)->user_regs;
|
||
|
|
|
||
|
|
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
|
||
|
|
typedef struct user_fpsimd_state elf_fpregset_t;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* When the program starts, a1 contains a pointer to a function to be
|
||
|
|
* registered with atexit, as per the SVR4 ABI. A value of 0 means we have no
|
||
|
|
* such handler.
|
||
|
|
*/
|
||
|
|
#define ELF_PLAT_INIT(_r, load_addr) (_r)->regs[0] = 0
|
||
|
|
|
||
|
|
#define SET_PERSONALITY(ex) \
|
||
|
|
({ \
|
||
|
|
clear_thread_flag(TIF_32BIT); \
|
||
|
|
current->personality &= ~READ_IMPLIES_EXEC; \
|
||
|
|
})
|
||
|
|
|
||
|
|
/* update AT_VECTOR_SIZE_ARCH if the number of NEW_AUX_ENT entries changes */
|
||
|
|
#define ARCH_DLINFO \
|
||
|
|
do { \
|
||
|
|
NEW_AUX_ENT(AT_SYSINFO_EHDR, \
|
||
|
|
(elf_addr_t)current->mm->context.vdso); \
|
||
|
|
\
|
||
|
|
/* \
|
||
|
|
* 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)
|
||
|
|
|
||
|
|
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
|
||
|
|
struct linux_binprm;
|
||
|
|
extern int arch_setup_additional_pages(struct linux_binprm *bprm,
|
||
|
|
int uses_interp);
|
||
|
|
|
||
|
|
/* 1GB of VA */
|
||
|
|
#ifdef CONFIG_COMPAT
|
||
|
|
#define STACK_RND_MASK (test_thread_flag(TIF_32BIT) ? \
|
||
|
|
0x7ff >> (PAGE_SHIFT - 12) : \
|
||
|
|
0x3ffff >> (PAGE_SHIFT - 12))
|
||
|
|
#else
|
||
|
|
#define STACK_RND_MASK (0x3ffff >> (PAGE_SHIFT - 12))
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef __AARCH64EB__
|
||
|
|
#define COMPAT_ELF_PLATFORM ("v8b")
|
||
|
|
#else
|
||
|
|
#define COMPAT_ELF_PLATFORM ("v8l")
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef CONFIG_COMPAT
|
||
|
|
|
||
|
|
/* PIE load location for compat arm. Must match ARM ELF_ET_DYN_BASE. */
|
||
|
|
#define COMPAT_ELF_ET_DYN_BASE 0x000400000UL
|
||
|
|
|
||
|
|
/* AArch32 registers. */
|
||
|
|
#define COMPAT_ELF_NGREG 18
|
||
|
|
typedef unsigned int compat_elf_greg_t;
|
||
|
|
typedef compat_elf_greg_t compat_elf_gregset_t[COMPAT_ELF_NGREG];
|
||
|
|
|
||
|
|
/* AArch32 EABI. */
|
||
|
|
#define EF_ARM_EABI_MASK 0xff000000
|
||
|
|
#define compat_elf_check_arch(x) (system_supports_32bit_el0() && \
|
||
|
|
((x)->e_machine == EM_ARM) && \
|
||
|
|
((x)->e_flags & EF_ARM_EABI_MASK))
|
||
|
|
|
||
|
|
#define compat_start_thread compat_start_thread
|
||
|
|
/*
|
||
|
|
* Unlike the native SET_PERSONALITY macro, the compat version maintains
|
||
|
|
* READ_IMPLIES_EXEC across an execve() since this is the behaviour on
|
||
|
|
* arch/arm/.
|
||
|
|
*/
|
||
|
|
#define COMPAT_SET_PERSONALITY(ex) \
|
||
|
|
({ \
|
||
|
|
set_thread_flag(TIF_32BIT); \
|
||
|
|
})
|
||
|
|
#ifdef CONFIG_COMPAT_VDSO
|
||
|
|
#define COMPAT_ARCH_DLINFO \
|
||
|
|
do { \
|
||
|
|
/* \
|
||
|
|
* Note that we use Elf64_Off instead of elf_addr_t because \
|
||
|
|
* elf_addr_t in compat is defined as Elf32_Addr and casting \
|
||
|
|
* current->mm->context.vdso to it triggers a cast warning of \
|
||
|
|
* cast from pointer to integer of different size. \
|
||
|
|
*/ \
|
||
|
|
NEW_AUX_ENT(AT_SYSINFO_EHDR, \
|
||
|
|
(Elf64_Off)current->mm->context.vdso); \
|
||
|
|
} while (0)
|
||
|
|
#else
|
||
|
|
#define COMPAT_ARCH_DLINFO
|
||
|
|
#endif
|
||
|
|
extern int aarch32_setup_additional_pages(struct linux_binprm *bprm,
|
||
|
|
int uses_interp);
|
||
|
|
#define compat_arch_setup_additional_pages \
|
||
|
|
aarch32_setup_additional_pages
|
||
|
|
|
||
|
|
#endif /* CONFIG_COMPAT */
|
||
|
|
|
||
|
|
#endif /* !__ASSEMBLY__ */
|
||
|
|
|
||
|
|
#endif
|