5dc99e50d2
ptrace regset interface relies on ELF_NGREG for ceiling the size of user
request. So any larger request (even if legit) would be clipped.
The existing def of ELF_NGREG didn't use user_regs_struct and was
technically one placeholder short (stop_pc) - although the current code
would still work because pt_regs includes a bunch of extra fields,
making
ELF_NGREG >= sizeof(struct user_regs_struct)/sizeof(long)
But we need to remove this ambiguity, specially since pt_regs should NOT
be directly associated with with anything userspace-ish.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
94 lines
2.5 KiB
C
94 lines
2.5 KiB
C
/*
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* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASM_ARC_ELF_H
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#define __ASM_ARC_ELF_H
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#include <asm/ptrace.h>
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#define EM_ARCOMPACT 93
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/* Machine specific ELF Hdr flags */
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#define EF_ARC_OSABI_MSK 0x00000f00
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#define EF_ARC_OSABI_ORIG 0x00000000 /* MUST be zero for back-compat */
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#define EF_ARC_OSABI_V2 0x00000200
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/* ARC Relocations (kernel Modules only) */
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#define R_ARC_32 0x4
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#define R_ARC_32_ME 0x1B
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#define R_ARC_S25H_PCREL 0x10
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#define R_ARC_S25W_PCREL 0x11
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typedef unsigned long elf_greg_t;
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typedef unsigned long elf_fpregset_t;
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#define ELF_NGREG (sizeof(struct user_regs_struct) / sizeof(elf_greg_t))
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typedef elf_greg_t elf_gregset_t[ELF_NGREG];
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/*
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* To ensure that
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* -we don't load something for the wrong architecture.
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* -The userspace is using the correct syscall ABI
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*/
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struct elf32_hdr;
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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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/*
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* These are used to set parameters in the core dumps.
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*/
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#define ELF_ARCH EM_ARCOMPACT
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#define ELF_CLASS ELFCLASS32
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#ifdef CONFIG_CPU_BIG_ENDIAN
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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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#ifdef __KERNEL__
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#define CORE_DUMP_USE_REGSET
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#define ELF_EXEC_PAGESIZE PAGE_SIZE
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/*
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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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*/
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#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
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/*
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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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*/
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#define ELF_PLAT_INIT(_r, load_addr) ((_r)->r0 = 0)
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/*
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* This yields a mask that user programs can use to figure out what
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* instruction set this cpu supports.
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*/
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#define ELF_HWCAP (0)
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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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#define ELF_PLATFORM (NULL)
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#define SET_PERSONALITY(ex) \
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set_personality(PER_LINUX | (current->personality & (~PER_MASK)))
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#endif /* __KERNEL__ */
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#endif
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