Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef __ASMARM_ELF_H |
| 2 | #define __ASMARM_ELF_H |
| 3 | |
Russell King | 4a5222c | 2006-11-09 14:07:52 +0000 | [diff] [blame] | 4 | #ifndef __ASSEMBLY__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | /* |
| 6 | * ELF register definitions.. |
| 7 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | #include <asm/ptrace.h> |
| 9 | #include <asm/user.h> |
Catalin Marinas | f884b1c | 2007-07-12 16:10:22 +0100 | [diff] [blame] | 10 | #include <asm/hwcap.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 11 | |
| 12 | typedef unsigned long elf_greg_t; |
| 13 | typedef unsigned long elf_freg_t[3]; |
| 14 | |
Russell King | 4a5222c | 2006-11-09 14:07:52 +0000 | [diff] [blame] | 15 | #define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t)) |
| 16 | typedef elf_greg_t elf_gregset_t[ELF_NGREG]; |
| 17 | |
| 18 | typedef struct user_fp elf_fpregset_t; |
| 19 | #endif |
| 20 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #define EM_ARM 40 |
| 22 | #define EF_ARM_APCS26 0x08 |
| 23 | #define EF_ARM_SOFT_FLOAT 0x200 |
| 24 | #define EF_ARM_EABI_MASK 0xFF000000 |
| 25 | |
| 26 | #define R_ARM_NONE 0 |
| 27 | #define R_ARM_PC24 1 |
| 28 | #define R_ARM_ABS32 2 |
Daniel Jacobowitz | c2e2611 | 2005-12-14 22:04:22 +0000 | [diff] [blame] | 29 | #define R_ARM_CALL 28 |
| 30 | #define R_ARM_JUMP24 29 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | * These are used to set parameters in the core dumps. |
| 34 | */ |
| 35 | #define ELF_CLASS ELFCLASS32 |
| 36 | #ifdef __ARMEB__ |
Mike Frysinger | 718a30a | 2005-06-03 20:52:26 +0100 | [diff] [blame] | 37 | #define ELF_DATA ELFDATA2MSB |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #else |
Mike Frysinger | 718a30a | 2005-06-03 20:52:26 +0100 | [diff] [blame] | 39 | #define ELF_DATA ELFDATA2LSB |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #endif |
| 41 | #define ELF_ARCH EM_ARM |
| 42 | |
Russell King | 5974eaa | 2006-11-09 14:37:06 +0000 | [diff] [blame] | 43 | #ifdef __KERNEL__ |
Russell King | 4a5222c | 2006-11-09 14:07:52 +0000 | [diff] [blame] | 44 | #ifndef __ASSEMBLY__ |
| 45 | /* |
Russell King | 4a5222c | 2006-11-09 14:07:52 +0000 | [diff] [blame] | 46 | * This yields a string that ld.so will use to load implementation |
| 47 | * specific libraries for optimization. This is more specific in |
| 48 | * intent than poking at uname or /proc/cpuinfo. |
| 49 | * |
| 50 | * For now we just provide a fairly general string that describes the |
| 51 | * processor family. This could be made more specific later if someone |
| 52 | * implemented optimisations that require it. 26-bit CPUs give you |
| 53 | * "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't |
| 54 | * supported). 32-bit CPUs give you "v3[lb]" for anything based on an |
| 55 | * ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1 |
| 56 | * core. |
| 57 | */ |
| 58 | #define ELF_PLATFORM_SIZE 8 |
| 59 | #define ELF_PLATFORM (elf_platform) |
| 60 | |
| 61 | extern char elf_platform[]; |
| 62 | #endif |
| 63 | |
David Woodhouse | 6ff6340 | 2006-09-21 08:34:39 +0100 | [diff] [blame] | 64 | /* |
| 65 | * This is used to ensure we don't load something for the wrong architecture. |
| 66 | */ |
Russell King | 4a5222c | 2006-11-09 14:07:52 +0000 | [diff] [blame] | 67 | #define elf_check_arch(x) ((x)->e_machine == EM_ARM && ELF_PROC_OK(x)) |
| 68 | |
| 69 | /* |
| 70 | * 32-bit code is always OK. Some cpus can do 26-bit, some can't. |
| 71 | */ |
| 72 | #define ELF_PROC_OK(x) (ELF_THUMB_OK(x) && ELF_26BIT_OK(x)) |
| 73 | |
| 74 | #define ELF_THUMB_OK(x) \ |
| 75 | ((elf_hwcap & HWCAP_THUMB && ((x)->e_entry & 1) == 1) || \ |
| 76 | ((x)->e_entry & 3) == 0) |
| 77 | |
| 78 | #define ELF_26BIT_OK(x) \ |
| 79 | ((elf_hwcap & HWCAP_26BIT && (x)->e_flags & EF_ARM_APCS26) || \ |
| 80 | ((x)->e_flags & EF_ARM_APCS26) == 0) |
David Woodhouse | 6ff6340 | 2006-09-21 08:34:39 +0100 | [diff] [blame] | 81 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | #define USE_ELF_CORE_DUMP |
| 83 | #define ELF_EXEC_PAGESIZE 4096 |
| 84 | |
| 85 | /* This is the location that an ET_DYN program is loaded if exec'ed. Typical |
| 86 | use of this is to invoke "./ld.so someprog" to test out a new version of |
| 87 | the loader. We need to make sure that it is out of the way of the program |
| 88 | that it will "exec", and that there is sufficient room for the brk. */ |
| 89 | |
| 90 | #define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3) |
| 91 | |
| 92 | /* When the program starts, a1 contains a pointer to a function to be |
| 93 | registered with atexit, as per the SVR4 ABI. A value of 0 means we |
| 94 | have no such handler. */ |
| 95 | #define ELF_PLAT_INIT(_r, load_addr) (_r)->ARM_r0 = 0 |
| 96 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | /* |
Lennert Buytenhek | afe4b25 | 2006-12-03 18:51:14 +0100 | [diff] [blame] | 98 | * Since the FPA coprocessor uses CP1 and CP2, and iWMMXt uses CP0 |
| 99 | * and CP1, we only enable access to the iWMMXt coprocessor if the |
| 100 | * binary is EABI or softfloat (and thus, guaranteed not to use |
| 101 | * FPA instructions.) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | */ |
Lennert Buytenhek | afe4b25 | 2006-12-03 18:51:14 +0100 | [diff] [blame] | 103 | #define SET_PERSONALITY(ex, ibcs2) \ |
| 104 | do { \ |
| 105 | if ((ex).e_flags & EF_ARM_APCS26) { \ |
| 106 | set_personality(PER_LINUX); \ |
| 107 | } else { \ |
| 108 | set_personality(PER_LINUX_32BIT); \ |
| 109 | if (elf_hwcap & HWCAP_IWMMXT && (ex).e_flags & (EF_ARM_EABI_MASK | EF_ARM_SOFT_FLOAT)) \ |
| 110 | set_thread_flag(TIF_USING_IWMMXT); \ |
| 111 | else \ |
| 112 | clear_thread_flag(TIF_USING_IWMMXT); \ |
| 113 | } \ |
| 114 | } while (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | |
| 116 | #endif |
| 117 | |
| 118 | #endif |