1#ifndef __ASM_SH_USER_H 2#define __ASM_SH_USER_H 3 4#include <asm/ptrace.h> 5#include <asm/page.h> 6 7/* 8 * Core file format: The core file is written in such a way that gdb 9 * can understand it and provide useful information to the user (under 10 * linux we use the `trad-core' bfd). The file contents are as follows: 11 * 12 * upage: 1 page consisting of a user struct that tells gdb 13 * what is present in the file. Directly after this is a 14 * copy of the task_struct, which is currently not used by gdb, 15 * but it may come in handy at some point. All of the registers 16 * are stored as part of the upage. The upage should always be 17 * only one page long. 18 * data: The data segment follows next. We use current->end_text to 19 * current->brk to pick up all of the user variables, plus any memory 20 * that may have been sbrk'ed. No attempt is made to determine if a 21 * page is demand-zero or if a page is totally unused, we just cover 22 * the entire range. All of the addresses are rounded in such a way 23 * that an integral number of pages is written. 24 * stack: We need the stack information in order to get a meaningful 25 * backtrace. We need to write the data from usp to 26 * current->start_stack, so we round each of these in order to be able 27 * to write an integer number of pages. 28 */ 29 30#if defined(__SH5__) || defined(CONFIG_CPU_SH5) 31struct user_fpu_struct { 32 unsigned long fp_regs[32]; 33 unsigned int fpscr; 34}; 35#else 36struct user_fpu_struct { 37 unsigned long fp_regs[16]; 38 unsigned long xfp_regs[16]; 39 unsigned long fpscr; 40 unsigned long fpul; 41}; 42#endif 43 44struct user { 45 struct pt_regs regs; /* entire machine state */ 46 struct user_fpu_struct fpu; /* Math Co-processor registers */ 47 int u_fpvalid; /* True if math co-processor being used */ 48 size_t u_tsize; /* text size (pages) */ 49 size_t u_dsize; /* data size (pages) */ 50 size_t u_ssize; /* stack size (pages) */ 51 unsigned long start_code; /* text starting address */ 52 unsigned long start_data; /* data starting address */ 53 unsigned long start_stack; /* stack starting address */ 54 long int signal; /* signal causing core dump */ 55 unsigned long u_ar0; /* help gdb find registers */ 56 struct user_fpu_struct* u_fpstate; /* Math Co-processor pointer */ 57 unsigned long magic; /* identifies a core file */ 58 char u_comm[32]; /* user command name */ 59}; 60 61#define NBPG PAGE_SIZE 62#define UPAGES 1 63#define HOST_TEXT_START_ADDR (u.start_code) 64#define HOST_DATA_START_ADDR (u.start_data) 65#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG) 66 67#endif /* __ASM_SH_USER_H */ 68