117 lines
3.3 KiB
C
117 lines
3.3 KiB
C
#ifndef __ASMARM_ELF_H
|
|
#define __ASMARM_ELF_H
|
|
|
|
#include <asm/hwcap.h>
|
|
|
|
#ifndef __ASSEMBLY__
|
|
/*
|
|
* ELF register definitions..
|
|
*/
|
|
#include <asm/ptrace.h>
|
|
#include <asm/user.h>
|
|
|
|
typedef unsigned long elf_greg_t;
|
|
typedef unsigned long elf_freg_t[3];
|
|
|
|
#define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
|
|
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
|
|
|
|
typedef struct user_fp elf_fpregset_t;
|
|
#endif
|
|
|
|
#define EM_ARM 40
|
|
#define EF_ARM_APCS26 0x08
|
|
#define EF_ARM_SOFT_FLOAT 0x200
|
|
#define EF_ARM_EABI_MASK 0xFF000000
|
|
|
|
#define R_ARM_NONE 0
|
|
#define R_ARM_PC24 1
|
|
#define R_ARM_ABS32 2
|
|
#define R_ARM_CALL 28
|
|
#define R_ARM_JUMP24 29
|
|
|
|
/*
|
|
* These are used to set parameters in the core dumps.
|
|
*/
|
|
#define ELF_CLASS ELFCLASS32
|
|
#ifdef __ARMEB__
|
|
#define ELF_DATA ELFDATA2MSB
|
|
#else
|
|
#define ELF_DATA ELFDATA2LSB
|
|
#endif
|
|
#define ELF_ARCH EM_ARM
|
|
|
|
#ifndef __ASSEMBLY__
|
|
/*
|
|
* 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.
|
|
*
|
|
* For now we just provide a fairly general string that describes the
|
|
* processor family. This could be made more specific later if someone
|
|
* implemented optimisations that require it. 26-bit CPUs give you
|
|
* "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't
|
|
* supported). 32-bit CPUs give you "v3[lb]" for anything based on an
|
|
* ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1
|
|
* core.
|
|
*/
|
|
#define ELF_PLATFORM_SIZE 8
|
|
#define ELF_PLATFORM (elf_platform)
|
|
|
|
extern char elf_platform[];
|
|
#endif
|
|
|
|
/*
|
|
* This is used to ensure we don't load something for the wrong architecture.
|
|
*/
|
|
#define elf_check_arch(x) ((x)->e_machine == EM_ARM && ELF_PROC_OK(x))
|
|
|
|
/*
|
|
* 32-bit code is always OK. Some cpus can do 26-bit, some can't.
|
|
*/
|
|
#define ELF_PROC_OK(x) (ELF_THUMB_OK(x) && ELF_26BIT_OK(x))
|
|
|
|
#define ELF_THUMB_OK(x) \
|
|
((elf_hwcap & HWCAP_THUMB && ((x)->e_entry & 1) == 1) || \
|
|
((x)->e_entry & 3) == 0)
|
|
|
|
#define ELF_26BIT_OK(x) \
|
|
((elf_hwcap & HWCAP_26BIT && (x)->e_flags & EF_ARM_APCS26) || \
|
|
((x)->e_flags & EF_ARM_APCS26) == 0)
|
|
|
|
#define USE_ELF_CORE_DUMP
|
|
#define ELF_EXEC_PAGESIZE 4096
|
|
|
|
/* 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 (2 * TASK_SIZE / 3)
|
|
|
|
/* 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)->ARM_r0 = 0
|
|
|
|
/*
|
|
* Since the FPA coprocessor uses CP1 and CP2, and iWMMXt uses CP0
|
|
* and CP1, we only enable access to the iWMMXt coprocessor if the
|
|
* binary is EABI or softfloat (and thus, guaranteed not to use
|
|
* FPA instructions.)
|
|
*/
|
|
#define SET_PERSONALITY(ex, ibcs2) \
|
|
do { \
|
|
if ((ex).e_flags & EF_ARM_APCS26) { \
|
|
set_personality(PER_LINUX); \
|
|
} else { \
|
|
set_personality(PER_LINUX_32BIT); \
|
|
if (elf_hwcap & HWCAP_IWMMXT && (ex).e_flags & (EF_ARM_EABI_MASK | EF_ARM_SOFT_FLOAT)) \
|
|
set_thread_flag(TIF_USING_IWMMXT); \
|
|
else \
|
|
clear_thread_flag(TIF_USING_IWMMXT); \
|
|
} \
|
|
} while (0)
|
|
|
|
#endif
|