7 * ELF register definitions..
9 #include <asm/ptrace.h>
12 typedef unsigned long elf_greg_t;
13 typedef unsigned long elf_freg_t[3];
15 #define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
16 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
18 typedef struct user_fp elf_fpregset_t;
21 #define EF_ARM_APCS26 0x08
22 #define EF_ARM_SOFT_FLOAT 0x200
23 #define EF_ARM_EABI_MASK 0xFF000000
29 #define R_ARM_JUMP24 29
32 * These are used to set parameters in the core dumps.
34 #define ELF_CLASS ELFCLASS32
36 #define ELF_DATA ELFDATA2MSB
38 #define ELF_DATA ELFDATA2LSB
40 #define ELF_ARCH EM_ARM
43 * This yields a string that ld.so will use to load implementation
44 * specific libraries for optimization. This is more specific in
45 * intent than poking at uname or /proc/cpuinfo.
47 * For now we just provide a fairly general string that describes the
48 * processor family. This could be made more specific later if someone
49 * implemented optimisations that require it. 26-bit CPUs give you
50 * "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't
51 * supported). 32-bit CPUs give you "v3[lb]" for anything based on an
52 * ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1
55 #define ELF_PLATFORM_SIZE 8
56 #define ELF_PLATFORM (elf_platform)
58 extern char elf_platform[];
61 * This is used to ensure we don't load something for the wrong architecture.
63 #define elf_check_arch(x) ((x)->e_machine == EM_ARM && ELF_PROC_OK(x))
66 * 32-bit code is always OK. Some cpus can do 26-bit, some can't.
68 #define ELF_PROC_OK(x) (ELF_THUMB_OK(x) && ELF_26BIT_OK(x))
70 #define ELF_THUMB_OK(x) \
71 ((elf_hwcap & HWCAP_THUMB && ((x)->e_entry & 1) == 1) || \
72 ((x)->e_entry & 3) == 0)
74 #define ELF_26BIT_OK(x) \
75 ((elf_hwcap & HWCAP_26BIT && (x)->e_flags & EF_ARM_APCS26) || \
76 ((x)->e_flags & EF_ARM_APCS26) == 0)
78 #define USE_ELF_CORE_DUMP
79 #define ELF_EXEC_PAGESIZE 4096
81 /* This is the location that an ET_DYN program is loaded if exec'ed. Typical
82 use of this is to invoke "./ld.so someprog" to test out a new version of
83 the loader. We need to make sure that it is out of the way of the program
84 that it will "exec", and that there is sufficient room for the brk. */
86 #define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
88 /* When the program starts, a1 contains a pointer to a function to be
89 registered with atexit, as per the SVR4 ABI. A value of 0 means we
90 have no such handler. */
91 #define ELF_PLAT_INIT(_r, load_addr) (_r)->ARM_r0 = 0
94 * Since the FPA coprocessor uses CP1 and CP2, and iWMMXt uses CP0
95 * and CP1, we only enable access to the iWMMXt coprocessor if the
96 * binary is EABI or softfloat (and thus, guaranteed not to use
99 #define SET_PERSONALITY(ex, ibcs2) \
101 if ((ex).e_flags & EF_ARM_APCS26) { \
102 set_personality(PER_LINUX); \
104 set_personality(PER_LINUX_32BIT); \
105 if (elf_hwcap & HWCAP_IWMMXT && (ex).e_flags & (EF_ARM_EABI_MASK | EF_ARM_SOFT_FLOAT)) \
106 set_thread_flag(TIF_USING_IWMMXT); \
108 clear_thread_flag(TIF_USING_IWMMXT); \