1#ifndef __ASM_CRIS_USER_H 2#define __ASM_CRIS_USER_H 3 4#include <linux/types.h> 5#include <asm/ptrace.h> 6#include <asm/page.h> 7 8/* 9 * Core file format: The core file is written in such a way that gdb 10 * can understand it and provide useful information to the user (under 11 * linux we use the `trad-core' bfd). The file contents are as follows: 12 * 13 * upage: 1 page consisting of a user struct that tells gdb 14 * what is present in the file. Directly after this is a 15 * copy of the task_struct, which is currently not used by gdb, 16 * but it may come in handy at some point. All of the registers 17 * are stored as part of the upage. The upage should always be 18 * only one page long. 19 * data: The data segment follows next. We use current->end_text to 20 * current->brk to pick up all of the user variables, plus any memory 21 * that may have been sbrk'ed. No attempt is made to determine if a 22 * page is demand-zero or if a page is totally unused, we just cover 23 * the entire range. All of the addresses are rounded in such a way 24 * that an integral number of pages is written. 25 * stack: We need the stack information in order to get a meaningful 26 * backtrace. We need to write the data from usp to 27 * current->start_stack, so we round each of these in order to be able 28 * to write an integer number of pages. 29 */ 30 31/* User mode registers, used for core dumps. In order to keep ELF_NGREG 32 sensible we let all registers be 32 bits. The csr registers are included 33 for future use. */ 34struct user_regs_struct { 35 unsigned long r0; /* General registers. */ 36 unsigned long r1; 37 unsigned long r2; 38 unsigned long r3; 39 unsigned long r4; 40 unsigned long r5; 41 unsigned long r6; 42 unsigned long r7; 43 unsigned long r8; 44 unsigned long r9; 45 unsigned long r10; 46 unsigned long r11; 47 unsigned long r12; 48 unsigned long r13; 49 unsigned long sp; /* Stack pointer. */ 50 unsigned long pc; /* Program counter. */ 51 unsigned long p0; /* Constant zero (only 8 bits). */ 52 unsigned long vr; /* Version register (only 8 bits). */ 53 unsigned long p2; /* Reserved. */ 54 unsigned long p3; /* Reserved. */ 55 unsigned long p4; /* Constant zero (only 16 bits). */ 56 unsigned long ccr; /* Condition code register (only 16 bits). */ 57 unsigned long p6; /* Reserved. */ 58 unsigned long mof; /* Multiply overflow register. */ 59 unsigned long p8; /* Constant zero. */ 60 unsigned long ibr; /* Not accessible. */ 61 unsigned long irp; /* Not accessible. */ 62 unsigned long srp; /* Subroutine return pointer. */ 63 unsigned long bar; /* Not accessible. */ 64 unsigned long dccr; /* Dword condition code register. */ 65 unsigned long brp; /* Not accessible. */ 66 unsigned long usp; /* User-mode stack pointer. Same as sp when 67 in user mode. */ 68 unsigned long csrinstr; /* Internal status registers. */ 69 unsigned long csraddr; 70 unsigned long csrdata; 71}; 72 73 74struct user { 75 struct user_regs_struct regs; /* entire machine state */ 76 size_t u_tsize; /* text size (pages) */ 77 size_t u_dsize; /* data size (pages) */ 78 size_t u_ssize; /* stack size (pages) */ 79 unsigned long start_code; /* text starting address */ 80 unsigned long start_data; /* data starting address */ 81 unsigned long start_stack; /* stack starting address */ 82 long int signal; /* signal causing core dump */ 83 struct regs * u_ar0; /* help gdb find registers */ 84 unsigned long magic; /* identifies a core file */ 85 char u_comm[32]; /* user command name */ 86}; 87 88#define NBPG PAGE_SIZE 89#define UPAGES 1 90#define HOST_TEXT_START_ADDR (u.start_code) 91#define HOST_DATA_START_ADDR (u.start_data) 92#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG) 93 94#endif /* __ASM_CRIS_USER_H */ 95