diff options
| author | Vineet Gupta <vgupta@synopsys.com> | 2013-01-18 13:42:17 +0400 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2013-02-11 18:30:34 +0400 |
| commit | 3be80aaef861a60b85a9323462ebb5f623774f7a (patch) | |
| tree | b5224ff6c43f4a5787b72a18b83b6d4de7dbddf7 /arch/arc/include/asm/elf.h | |
| parent | ca15c8ecd588dda4377d18d6d27bc1e87b4177cb (diff) | |
| download | linux-3be80aaef861a60b85a9323462ebb5f623774f7a.tar.xz | |
ARC: Fundamental ARCH data-types/defines
* L1_CACHE_SHIFT
* PAGE_SIZE, PAGE_OFFSET
* struct pt_regs, struct user_regs_struct
* struct thread_struct, cpu_relax(), task_pt_regs(), start_thread(), ...
* struct thread_info, THREAD_SIZE, INIT_THREAD_INFO(), TIF_*, ...
* BUG()
* ELF_*
* Elf_*
To disallow user-space visibility into some of the core kernel data-types
such as struct pt_regs, #ifdef __KERNEL__ which also makes the UAPI header
spit (further patch in the series) to NOT export it to asm/uapi/ptrace.h
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Cc: Jonas Bonn <jonas.bonn@gmail.com>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arc/include/asm/elf.h')
| -rw-r--r-- | arch/arc/include/asm/elf.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/arch/arc/include/asm/elf.h b/arch/arc/include/asm/elf.h new file mode 100644 index 000000000000..147284ff1f96 --- /dev/null +++ b/arch/arc/include/asm/elf.h @@ -0,0 +1,97 @@ +/* + * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __ASM_ARC_ELF_H +#define __ASM_ARC_ELF_H + +#include <asm/ptrace.h> + +#define EM_ARCOMPACT 93 + +/* Machine specific ELF Hdr flags */ +#define EF_ARC_OSABI_MSK 0x00000f00 +#define EF_ARC_OSABI_ORIG 0x00000000 /* MUST be zero for back-compat */ +#define EF_ARC_OSABI_V2 0x00000200 + +/* ARC Relocations (kernel Modules only) */ +#define R_ARC_32 0x4 +#define R_ARC_32_ME 0x1B +#define R_ARC_S25H_PCREL 0x10 +#define R_ARC_S25W_PCREL 0x11 + +typedef unsigned long elf_greg_t; +typedef unsigned long elf_fpregset_t; + + +/* core dump regs is in the order pt_regs, callee_regs, stop_pc (for gdb) */ +#define ELF_NGREG ((sizeof(struct pt_regs) + sizeof(struct callee_regs) \ + + sizeof(unsigned long)) / sizeof(elf_greg_t)) + +typedef elf_greg_t elf_gregset_t[ELF_NGREG]; + +/* + * To ensure that + * -we don't load something for the wrong architecture. + * -The userspace is using the correct syscall ABI + */ +struct elf32_hdr; +extern int elf_check_arch(const struct elf32_hdr *); +#define elf_check_arch elf_check_arch + +/* + * These are used to set parameters in the core dumps. + */ +#define ELF_ARCH EM_ARCOMPACT +#define ELF_CLASS ELFCLASS32 + +#ifdef CONFIG_CPU_BIG_ENDIAN +#define ELF_DATA ELFDATA2MSB +#else +#define ELF_DATA ELFDATA2LSB +#endif + +#ifdef __KERNEL__ + +#define CORE_DUMP_USE_REGSET + +#define ELF_EXEC_PAGESIZE PAGE_SIZE + +/* + * 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)->r0 = 0) + +/* + * This yields a mask that user programs can use to figure out what + * instruction set this cpu supports. + */ +#define ELF_HWCAP (0) + +/* + * 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. + */ +#define ELF_PLATFORM (NULL) + +#define SET_PERSONALITY(ex) \ + set_personality(PER_LINUX | (current->personality & (~PER_MASK))) + +#endif /* __KERNEL__ */ + +#endif |