b0e026f4dc
elf.h: We can export some of these symbols to userspace. libc needs them and we just as well provide them as asm/elf.h as copying them into separate libc headers. ptrace.h: Having padding in the user_regs_struct isn't of any particular value and just confuses GDB. spr_defs isn't needed in userspace; libc has its own copy anyway. Signed-off-by: Jonas Bonn <jonas@southpole.se>
117 lines
3.3 KiB
C
117 lines
3.3 KiB
C
/*
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* OpenRISC Linux
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*
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* Linux architectural port borrowing liberally from similar works of
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* others. All original copyrights apply as per the original source
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* declaration.
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*
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* OpenRISC implementation:
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* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
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* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
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* et al.
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __ASM_OPENRISC_ELF_H
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#define __ASM_OPENRISC_ELF_H
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/*
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* This files is partially exported to userspace. This allows us to keep
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* the ELF bits in one place which should assist in keeping the kernel and
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* userspace in sync.
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*/
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/*
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* ELF register definitions..
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*/
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/* for struct user_regs_struct definition */
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#include <asm/ptrace.h>
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/* The OR1K relocation types... not all relevant for module loader */
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#define R_OR32_NONE 0
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#define R_OR32_32 1
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#define R_OR32_16 2
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#define R_OR32_8 3
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#define R_OR32_CONST 4
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#define R_OR32_CONSTH 5
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#define R_OR32_JUMPTARG 6
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#define R_OR32_VTINHERIT 7
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#define R_OR32_VTENTRY 8
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typedef unsigned long elf_greg_t;
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/*
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* Note that NGREG is defined to ELF_NGREG in include/linux/elfcore.h, and is
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* thus exposed to user-space.
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*/
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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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/* A placeholder; OR32 does not have fp support yes, so no fp regs for now. */
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typedef unsigned long elf_fpregset_t;
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/* This should be moved to include/linux/elf.h */
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#define EM_OR32 0x8472
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#define EM_OPENRISC 92 /* OpenRISC 32-bit embedded processor */
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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_OR32
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#define ELF_CLASS ELFCLASS32
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#define ELF_DATA ELFDATA2MSB
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#ifdef __KERNEL__
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#include <linux/types.h>
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/*
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* This is used to ensure we don't load something for the wrong architecture.
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*/
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#define elf_check_arch(x) \
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(((x)->e_machine == EM_OR32) || ((x)->e_machine == EM_OPENRISC))
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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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#define ELF_ET_DYN_BASE (0x08000000)
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/*
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* Enable dump using regset.
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* This covers all of general/DSP/FPU regs.
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*/
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#define CORE_DUMP_USE_REGSET
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#define ELF_EXEC_PAGESIZE 8192
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extern void dump_elf_thread(elf_greg_t *dest, struct pt_regs *pt);
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#define ELF_CORE_COPY_REGS(dest, regs) dump_elf_thread(dest, regs);
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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. This could be done in userspace,
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but it's not easy, and we've already done it here. */
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#define ELF_HWCAP (0)
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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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For the moment, we have only optimizations for the Intel generations,
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but that could change... */
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#define ELF_PLATFORM (NULL)
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#define SET_PERSONALITY(ex) set_personality(PER_LINUX)
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#endif /* __KERNEL__ */
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#endif
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