f9d4861fc3
The current user mapping for the vectors page is inserted as a `horrible hack vma' into each task via arch_setup_additional_pages. This causes problems with the MM subsystem and vm_normal_page, as described here: https://lkml.org/lkml/2012/1/14/55 Following the suggestion from Hugh in the above thread, this patch uses the gate_vma for the vectors user mapping, therefore consolidating the horrible hack VMAs into one. Acked-and-Tested-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
133 lines
4.1 KiB
C
133 lines
4.1 KiB
C
#ifndef __ASMARM_ELF_H
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#define __ASMARM_ELF_H
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#include <asm/hwcap.h>
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/*
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* ELF register definitions..
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*/
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#include <asm/ptrace.h>
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#include <asm/user.h>
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struct task_struct;
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typedef unsigned long elf_greg_t;
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typedef unsigned long elf_freg_t[3];
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#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
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typedef elf_greg_t elf_gregset_t[ELF_NGREG];
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typedef struct user_fp elf_fpregset_t;
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#define EM_ARM 40
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#define EF_ARM_EABI_MASK 0xff000000
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#define EF_ARM_EABI_UNKNOWN 0x00000000
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#define EF_ARM_EABI_VER1 0x01000000
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#define EF_ARM_EABI_VER2 0x02000000
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#define EF_ARM_EABI_VER3 0x03000000
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#define EF_ARM_EABI_VER4 0x04000000
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#define EF_ARM_EABI_VER5 0x05000000
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#define EF_ARM_BE8 0x00800000 /* ABI 4,5 */
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#define EF_ARM_LE8 0x00400000 /* ABI 4,5 */
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#define EF_ARM_MAVERICK_FLOAT 0x00000800 /* ABI 0 */
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#define EF_ARM_VFP_FLOAT 0x00000400 /* ABI 0 */
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#define EF_ARM_SOFT_FLOAT 0x00000200 /* ABI 0 */
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#define EF_ARM_OLD_ABI 0x00000100 /* ABI 0 */
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#define EF_ARM_NEW_ABI 0x00000080 /* ABI 0 */
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#define EF_ARM_ALIGN8 0x00000040 /* ABI 0 */
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#define EF_ARM_PIC 0x00000020 /* ABI 0 */
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#define EF_ARM_MAPSYMSFIRST 0x00000010 /* ABI 2 */
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#define EF_ARM_APCS_FLOAT 0x00000010 /* ABI 0, floats in fp regs */
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#define EF_ARM_DYNSYMSUSESEGIDX 0x00000008 /* ABI 2 */
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#define EF_ARM_APCS_26 0x00000008 /* ABI 0 */
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#define EF_ARM_SYMSARESORTED 0x00000004 /* ABI 1,2 */
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#define EF_ARM_INTERWORK 0x00000004 /* ABI 0 */
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#define EF_ARM_HASENTRY 0x00000002 /* All */
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#define EF_ARM_RELEXEC 0x00000001 /* All */
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#define R_ARM_NONE 0
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#define R_ARM_PC24 1
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#define R_ARM_ABS32 2
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#define R_ARM_CALL 28
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#define R_ARM_JUMP24 29
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#define R_ARM_V4BX 40
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#define R_ARM_PREL31 42
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#define R_ARM_MOVW_ABS_NC 43
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#define R_ARM_MOVT_ABS 44
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#define R_ARM_THM_CALL 10
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#define R_ARM_THM_JUMP24 30
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#define R_ARM_THM_MOVW_ABS_NC 47
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#define R_ARM_THM_MOVT_ABS 48
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/*
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* These are used to set parameters in the core dumps.
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*/
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#define ELF_CLASS ELFCLASS32
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#ifdef __ARMEB__
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#define ELF_DATA ELFDATA2MSB
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#else
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#define ELF_DATA ELFDATA2LSB
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#endif
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#define ELF_ARCH EM_ARM
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/*
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* This yields a string that ld.so will use to load implementation
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* specific libraries for optimization. This is more specific in
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* intent than poking at uname or /proc/cpuinfo.
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*
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* For now we just provide a fairly general string that describes the
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* processor family. This could be made more specific later if someone
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* implemented optimisations that require it. 26-bit CPUs give you
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* "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't
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* supported). 32-bit CPUs give you "v3[lb]" for anything based on an
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* ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1
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* core.
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*/
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#define ELF_PLATFORM_SIZE 8
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#define ELF_PLATFORM (elf_platform)
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extern char elf_platform[];
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struct elf32_hdr;
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/*
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* This is used to ensure we don't load something for the wrong architecture.
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*/
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extern int elf_check_arch(const struct elf32_hdr *);
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#define elf_check_arch elf_check_arch
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#define vmcore_elf64_check_arch(x) (0)
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extern int arm_elf_read_implies_exec(const struct elf32_hdr *, int);
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#define elf_read_implies_exec(ex,stk) arm_elf_read_implies_exec(&(ex), stk)
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struct task_struct;
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int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
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#define ELF_CORE_COPY_TASK_REGS dump_task_regs
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#define CORE_DUMP_USE_REGSET
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#define ELF_EXEC_PAGESIZE 4096
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/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
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use of this is to invoke "./ld.so someprog" to test out a new version of
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the loader. We need to make sure that it is out of the way of the program
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that it will "exec", and that there is sufficient room for the brk. */
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#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
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/* When the program starts, a1 contains a pointer to a function to be
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registered with atexit, as per the SVR4 ABI. A value of 0 means we
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have no such handler. */
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#define ELF_PLAT_INIT(_r, load_addr) (_r)->ARM_r0 = 0
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extern void elf_set_personality(const struct elf32_hdr *);
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#define SET_PERSONALITY(ex) elf_set_personality(&(ex))
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struct mm_struct;
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extern unsigned long arch_randomize_brk(struct mm_struct *mm);
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#define arch_randomize_brk arch_randomize_brk
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#endif
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