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>
116 lines
3.3 KiB
C
116 lines
3.3 KiB
C
/*
|
|
* OpenRISC Linux
|
|
*
|
|
* Linux architectural port borrowing liberally from similar works of
|
|
* others. All original copyrights apply as per the original source
|
|
* declaration.
|
|
*
|
|
* OpenRISC implementation:
|
|
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
|
|
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
|
|
* et al.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*/
|
|
|
|
#ifndef __ASM_OPENRISC_ELF_H
|
|
#define __ASM_OPENRISC_ELF_H
|
|
|
|
/*
|
|
* This files is partially exported to userspace. This allows us to keep
|
|
* the ELF bits in one place which should assist in keeping the kernel and
|
|
* userspace in sync.
|
|
*/
|
|
|
|
/*
|
|
* ELF register definitions..
|
|
*/
|
|
|
|
/* for struct user_regs_struct definition */
|
|
#include <asm/ptrace.h>
|
|
|
|
/* The OR1K relocation types... not all relevant for module loader */
|
|
#define R_OR32_NONE 0
|
|
#define R_OR32_32 1
|
|
#define R_OR32_16 2
|
|
#define R_OR32_8 3
|
|
#define R_OR32_CONST 4
|
|
#define R_OR32_CONSTH 5
|
|
#define R_OR32_JUMPTARG 6
|
|
#define R_OR32_VTINHERIT 7
|
|
#define R_OR32_VTENTRY 8
|
|
|
|
typedef unsigned long elf_greg_t;
|
|
|
|
/*
|
|
* Note that NGREG is defined to ELF_NGREG in include/linux/elfcore.h, and is
|
|
* thus exposed to user-space.
|
|
*/
|
|
#define ELF_NGREG (sizeof(struct user_regs_struct) / sizeof(elf_greg_t))
|
|
typedef elf_greg_t elf_gregset_t[ELF_NGREG];
|
|
|
|
/* A placeholder; OR32 does not have fp support yes, so no fp regs for now. */
|
|
typedef unsigned long elf_fpregset_t;
|
|
|
|
/* This should be moved to include/linux/elf.h */
|
|
#define EM_OR32 0x8472
|
|
#define EM_OPENRISC 92 /* OpenRISC 32-bit embedded processor */
|
|
|
|
/*
|
|
* These are used to set parameters in the core dumps.
|
|
*/
|
|
#define ELF_ARCH EM_OR32
|
|
#define ELF_CLASS ELFCLASS32
|
|
#define ELF_DATA ELFDATA2MSB
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <linux/types.h>
|
|
|
|
/*
|
|
* This is used to ensure we don't load something for the wrong architecture.
|
|
*/
|
|
|
|
#define elf_check_arch(x) \
|
|
(((x)->e_machine == EM_OR32) || ((x)->e_machine == EM_OPENRISC))
|
|
|
|
/* 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 (0x08000000)
|
|
|
|
/*
|
|
* Enable dump using regset.
|
|
* This covers all of general/DSP/FPU regs.
|
|
*/
|
|
#define CORE_DUMP_USE_REGSET
|
|
|
|
#define ELF_EXEC_PAGESIZE 8192
|
|
|
|
extern void dump_elf_thread(elf_greg_t *dest, struct pt_regs *pt);
|
|
#define ELF_CORE_COPY_REGS(dest, regs) dump_elf_thread(dest, regs);
|
|
|
|
/* This yields a mask that user programs can use to figure out what
|
|
instruction set this cpu supports. This could be done in userspace,
|
|
but it's not easy, and we've already done it here. */
|
|
|
|
#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.
|
|
|
|
For the moment, we have only optimizations for the Intel generations,
|
|
but that could change... */
|
|
|
|
#define ELF_PLATFORM (NULL)
|
|
|
|
#define SET_PERSONALITY(ex) set_personality(PER_LINUX)
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif
|