blob: c96685f304857be39794e1e560128daae0de891f [file] [log] [blame]
* Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (
* 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_USER_H
#define __ASM_ARC_USER_H
#include <linux/types.h>
#include <asm/ptrace.h>
#include <asm/page.h>
* Core file format: The core file is written in such a way that gdb
* can understand it and provide useful information to the user (under
* linux we use the `trad-core' bfd). The file contents are as follows:
* upage: 1 page consisting of a user struct that tells gdb
* what is present in the file. Directly after this is a
* copy of the task_struct, which is currently not used by gdb,
* but it may come in handy at some point. All of the registers
* are stored as part of the upage. The upage should always be
* only one page long.
* data: The data segment follows next. We use current->end_text to
* current->brk to pick up all of the user variables, plus any memory
* that may have been sbrk'ed. No attempt is made to determine if a
* page is demand-zero or if a page is totally unused, we just cover
* the entire range. All of the addresses are rounded in such a way
* that an integral number of pages is written.
* stack: We need the stack information in order to get a meaningful
* backtrace. We need to write the data from usp to
* current->start_stack, so we round each of these in order to be able
* to write an integer number of pages.
/* User mode registers, used for core dumps. */
struct user_regs_struct
/* ------- from struct pt_regs --------- */
long reserved1; /* SP unncessarily hops 1 word, in SAVE_ALL_xxx macros
No reason to do that, but changing this would
require syncing up tools (gdb) so .....
long bta; /* bta_l1, bta_l2, erbta */
long lp_start;
long lp_end;
long lp_count;
long status32; /* status32_l1, status32_l2, erstatus */
long ret; /* ilink1, ilink2 or eret*/
long blink;
long fp;
long r26; /* gp */
long r12;
long r11;
long r10;
long r9;
long r8;
long r7;
long r6;
long r5;
long r4;
long r3;
long r2;
long r1;
long r0;
long orig_r0;
long orig_r8;
long sp; /* user sp or kernel sp, depending on where we came from */
/* -------- from struct callee_regs --------- */
long reserved2;
long r25;
long r24;
long r23;
long r22;
long r21;
long r20;
long r19;
long r18;
long r17;
long r16;
long r15;
long r14;
long r13;
long efa; /* break pt addr, req for break points in delay slots */
long stop_pc; /* give dbg stop_pc directly after checking orig_r8 */
struct user {
struct user_regs_struct regs; /* entire machine state */
size_t u_tsize; /* text size (pages) */
size_t u_dsize; /* data size (pages) */
size_t u_ssize; /* stack size (pages) */
unsigned long start_code; /* text starting address */
unsigned long start_data; /* data starting address */
unsigned long start_stack; /* stack starting address */
long int signal; /* signal causing core dump */
struct regs * u_ar0; /* help gdb find registers */
unsigned long magic; /* identifies a core file */
char u_comm[32]; /* user command name */
#define UPAGES 1
#define HOST_TEXT_START_ADDR (u.start_code)
#define HOST_DATA_START_ADDR (u.start_data)
#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
#endif /* __ASM_ARC_USER_H */