1/* SPDX-License-Identifier: GPL-2.0 */
  2#ifndef __ASMARM_ELF_H
  3#define __ASMARM_ELF_H
  4
  5#include <asm/auxvec.h>
  6#include <asm/hwcap.h>
 
  7
  8/*
  9 * ELF register definitions..
 10 */
 11#include <asm/ptrace.h>
 12#include <asm/user.h>
 13
 14struct task_struct;
 15
 16typedef unsigned long elf_greg_t;
 17typedef unsigned long elf_freg_t[3];
 18
 19#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
 20typedef elf_greg_t elf_gregset_t[ELF_NGREG];
 21
 22typedef struct user_fp elf_fpregset_t;
 23
 24#define EF_ARM_EABI_MASK	0xff000000
 25#define EF_ARM_EABI_UNKNOWN	0x00000000
 26#define EF_ARM_EABI_VER1	0x01000000
 27#define EF_ARM_EABI_VER2	0x02000000
 28#define EF_ARM_EABI_VER3	0x03000000
 29#define EF_ARM_EABI_VER4	0x04000000
 30#define EF_ARM_EABI_VER5	0x05000000
 31
 32#define EF_ARM_BE8		0x00800000	/* ABI 4,5 */
 33#define EF_ARM_LE8		0x00400000	/* ABI 4,5 */
 34#define EF_ARM_MAVERICK_FLOAT	0x00000800	/* ABI 0 */
 35#define EF_ARM_VFP_FLOAT	0x00000400	/* ABI 0 */
 36#define EF_ARM_SOFT_FLOAT	0x00000200	/* ABI 0 */
 37#define EF_ARM_OLD_ABI		0x00000100	/* ABI 0 */
 38#define EF_ARM_NEW_ABI		0x00000080	/* ABI 0 */
 39#define EF_ARM_ALIGN8		0x00000040	/* ABI 0 */
 40#define EF_ARM_PIC		0x00000020	/* ABI 0 */
 41#define EF_ARM_MAPSYMSFIRST	0x00000010	/* ABI 2 */
 42#define EF_ARM_APCS_FLOAT	0x00000010	/* ABI 0, floats in fp regs */
 43#define EF_ARM_DYNSYMSUSESEGIDX	0x00000008	/* ABI 2 */
 44#define EF_ARM_APCS_26		0x00000008	/* ABI 0 */
 45#define EF_ARM_SYMSARESORTED	0x00000004	/* ABI 1,2 */
 46#define EF_ARM_INTERWORK	0x00000004	/* ABI 0 */
 47#define EF_ARM_HASENTRY		0x00000002	/* All */
 48#define EF_ARM_RELEXEC		0x00000001	/* All */
 49
 50#define R_ARM_NONE		0
 51#define R_ARM_PC24		1
 52#define R_ARM_ABS32		2
 53#define R_ARM_REL32		3
 54#define R_ARM_CALL		28
 55#define R_ARM_JUMP24		29
 56#define R_ARM_TARGET1		38
 57#define R_ARM_V4BX		40
 58#define R_ARM_PREL31		42
 59#define R_ARM_MOVW_ABS_NC	43
 60#define R_ARM_MOVT_ABS		44
 61#define R_ARM_MOVW_PREL_NC	45
 62#define R_ARM_MOVT_PREL		46
 63#define R_ARM_ALU_PC_G0_NC	57
 64#define R_ARM_ALU_PC_G1_NC	59
 65#define R_ARM_LDR_PC_G2		63
 66
 67#define R_ARM_THM_CALL		10
 68#define R_ARM_THM_JUMP24	30
 69#define R_ARM_THM_MOVW_ABS_NC	47
 70#define R_ARM_THM_MOVT_ABS	48
 71#define R_ARM_THM_MOVW_PREL_NC	49
 72#define R_ARM_THM_MOVT_PREL	50
 73
 74/*
 75 * These are used to set parameters in the core dumps.
 76 */
 77#define ELF_CLASS	ELFCLASS32
 78#ifdef __ARMEB__
 79#define ELF_DATA	ELFDATA2MSB
 80#else
 81#define ELF_DATA	ELFDATA2LSB
 82#endif
 83#define ELF_ARCH	EM_ARM
 84
 85/*
 86 * This yields a string that ld.so will use to load implementation
 87 * specific libraries for optimization.  This is more specific in
 88 * intent than poking at uname or /proc/cpuinfo.
 89 *
 90 * For now we just provide a fairly general string that describes the
 91 * processor family.  This could be made more specific later if someone
 92 * implemented optimisations that require it.  26-bit CPUs give you
 93 * "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't
 94 * supported).  32-bit CPUs give you "v3[lb]" for anything based on an
 95 * ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1
 96 * core.
 97 */
 98#define ELF_PLATFORM_SIZE 8
 99#define ELF_PLATFORM	(elf_platform)
100
101extern char elf_platform[];
102
103struct elf32_hdr;
104
105/*
106 * This is used to ensure we don't load something for the wrong architecture.
107 */
108extern int elf_check_arch(const struct elf32_hdr *);
109#define elf_check_arch elf_check_arch
110
111#define ELFOSABI_ARM_FDPIC  65	/* ARM FDPIC platform */
112#define elf_check_fdpic(x)  ((x)->e_ident[EI_OSABI] == ELFOSABI_ARM_FDPIC)
113#define elf_check_const_displacement(x)  ((x)->e_flags & EF_ARM_PIC)
114#define ELF_FDPIC_CORE_EFLAGS  0
115
116#define vmcore_elf64_check_arch(x) (0)
117
118extern int arm_elf_read_implies_exec(int);
119#define elf_read_implies_exec(ex,stk) arm_elf_read_implies_exec(stk)
 
 
 
 
120
121#define CORE_DUMP_USE_REGSET
122#define ELF_EXEC_PAGESIZE	4096
123
124/* This is the base location for PIE (ET_DYN with INTERP) loads. */
125#define ELF_ET_DYN_BASE		0x400000UL
 
 
 
 
126
127/* When the program starts, a1 contains a pointer to a function to be 
128   registered with atexit, as per the SVR4 ABI.  A value of 0 means we 
129   have no such handler.  */
130#define ELF_PLAT_INIT(_r, load_addr)	(_r)->ARM_r0 = 0
131
132#define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr, dynamic_addr) \
133	do { \
134		(_r)->ARM_r7 = _exec_map_addr; \
135		(_r)->ARM_r8 = _interp_map_addr; \
136		(_r)->ARM_r9 = dynamic_addr; \
137	} while(0)
138
139extern void elf_set_personality(const struct elf32_hdr *);
140#define SET_PERSONALITY(ex)	elf_set_personality(&(ex))
141
142#ifdef CONFIG_MMU
143#ifdef CONFIG_VDSO
144#define ARCH_DLINFO						\
145do {								\
146	NEW_AUX_ENT(AT_SYSINFO_EHDR,				\
147		    (elf_addr_t)current->mm->context.vdso);	\
148} while (0)
149#endif
150#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
151struct linux_binprm;
152int arch_setup_additional_pages(struct linux_binprm *, int);
153#endif
154
155#endif

 
  1#ifndef __ASMARM_ELF_H
  2#define __ASMARM_ELF_H
  3
  4#include <asm/auxvec.h>
  5#include <asm/hwcap.h>
  6#include <asm/vdso_datapage.h>
  7
  8/*
  9 * ELF register definitions..
 10 */
 11#include <asm/ptrace.h>
 12#include <asm/user.h>
 13
 14struct task_struct;
 15
 16typedef unsigned long elf_greg_t;
 17typedef unsigned long elf_freg_t[3];
 18
 19#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
 20typedef elf_greg_t elf_gregset_t[ELF_NGREG];
 21
 22typedef struct user_fp elf_fpregset_t;
 23
 24#define EF_ARM_EABI_MASK	0xff000000
 25#define EF_ARM_EABI_UNKNOWN	0x00000000
 26#define EF_ARM_EABI_VER1	0x01000000
 27#define EF_ARM_EABI_VER2	0x02000000
 28#define EF_ARM_EABI_VER3	0x03000000
 29#define EF_ARM_EABI_VER4	0x04000000
 30#define EF_ARM_EABI_VER5	0x05000000
 31
 32#define EF_ARM_BE8		0x00800000	/* ABI 4,5 */
 33#define EF_ARM_LE8		0x00400000	/* ABI 4,5 */
 34#define EF_ARM_MAVERICK_FLOAT	0x00000800	/* ABI 0 */
 35#define EF_ARM_VFP_FLOAT	0x00000400	/* ABI 0 */
 36#define EF_ARM_SOFT_FLOAT	0x00000200	/* ABI 0 */
 37#define EF_ARM_OLD_ABI		0x00000100	/* ABI 0 */
 38#define EF_ARM_NEW_ABI		0x00000080	/* ABI 0 */
 39#define EF_ARM_ALIGN8		0x00000040	/* ABI 0 */
 40#define EF_ARM_PIC		0x00000020	/* ABI 0 */
 41#define EF_ARM_MAPSYMSFIRST	0x00000010	/* ABI 2 */
 42#define EF_ARM_APCS_FLOAT	0x00000010	/* ABI 0, floats in fp regs */
 43#define EF_ARM_DYNSYMSUSESEGIDX	0x00000008	/* ABI 2 */
 44#define EF_ARM_APCS_26		0x00000008	/* ABI 0 */
 45#define EF_ARM_SYMSARESORTED	0x00000004	/* ABI 1,2 */
 46#define EF_ARM_INTERWORK	0x00000004	/* ABI 0 */
 47#define EF_ARM_HASENTRY		0x00000002	/* All */
 48#define EF_ARM_RELEXEC		0x00000001	/* All */
 49
 50#define R_ARM_NONE		0
 51#define R_ARM_PC24		1
 52#define R_ARM_ABS32		2
 
 53#define R_ARM_CALL		28
 54#define R_ARM_JUMP24		29
 55#define R_ARM_TARGET1		38
 56#define R_ARM_V4BX		40
 57#define R_ARM_PREL31		42
 58#define R_ARM_MOVW_ABS_NC	43
 59#define R_ARM_MOVT_ABS		44
 
 
 
 
 
 60
 61#define R_ARM_THM_CALL		10
 62#define R_ARM_THM_JUMP24	30
 63#define R_ARM_THM_MOVW_ABS_NC	47
 64#define R_ARM_THM_MOVT_ABS	48
 
 
 65
 66/*
 67 * These are used to set parameters in the core dumps.
 68 */
 69#define ELF_CLASS	ELFCLASS32
 70#ifdef __ARMEB__
 71#define ELF_DATA	ELFDATA2MSB
 72#else
 73#define ELF_DATA	ELFDATA2LSB
 74#endif
 75#define ELF_ARCH	EM_ARM
 76
 77/*
 78 * This yields a string that ld.so will use to load implementation
 79 * specific libraries for optimization.  This is more specific in
 80 * intent than poking at uname or /proc/cpuinfo.
 81 *
 82 * For now we just provide a fairly general string that describes the
 83 * processor family.  This could be made more specific later if someone
 84 * implemented optimisations that require it.  26-bit CPUs give you
 85 * "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't
 86 * supported).  32-bit CPUs give you "v3[lb]" for anything based on an
 87 * ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1
 88 * core.
 89 */
 90#define ELF_PLATFORM_SIZE 8
 91#define ELF_PLATFORM	(elf_platform)
 92
 93extern char elf_platform[];
 94
 95struct elf32_hdr;
 96
 97/*
 98 * This is used to ensure we don't load something for the wrong architecture.
 99 */
100extern int elf_check_arch(const struct elf32_hdr *);
101#define elf_check_arch elf_check_arch
102
 
 
 
 
 
103#define vmcore_elf64_check_arch(x) (0)
104
105extern int arm_elf_read_implies_exec(const struct elf32_hdr *, int);
106#define elf_read_implies_exec(ex,stk) arm_elf_read_implies_exec(&(ex), stk)
107
108struct task_struct;
109int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
110#define ELF_CORE_COPY_TASK_REGS dump_task_regs
111
112#define CORE_DUMP_USE_REGSET
113#define ELF_EXEC_PAGESIZE	4096
114
115/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
116   use of this is to invoke "./ld.so someprog" to test out a new version of
117   the loader.  We need to make sure that it is out of the way of the program
118   that it will "exec", and that there is sufficient room for the brk.  */
119
120#define ELF_ET_DYN_BASE	(TASK_SIZE / 3 * 2)
121
122/* When the program starts, a1 contains a pointer to a function to be 
123   registered with atexit, as per the SVR4 ABI.  A value of 0 means we 
124   have no such handler.  */
125#define ELF_PLAT_INIT(_r, load_addr)	(_r)->ARM_r0 = 0
 
 
 
 
 
 
 
126
127extern void elf_set_personality(const struct elf32_hdr *);
128#define SET_PERSONALITY(ex)	elf_set_personality(&(ex))
129
130#ifdef CONFIG_MMU
131#ifdef CONFIG_VDSO
132#define ARCH_DLINFO						\
133do {								\
134	NEW_AUX_ENT(AT_SYSINFO_EHDR,				\
135		    (elf_addr_t)current->mm->context.vdso);	\
136} while (0)
137#endif
138#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
139struct linux_binprm;
140int arch_setup_additional_pages(struct linux_binprm *, int);
141#endif
142
143#endif