1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_IA64_USER_H 3 #define _ASM_IA64_USER_H 4 5 /* 6 * Core file format: The core file is written in such a way that gdb 7 * can understand it and provide useful information to the user (under 8 * linux we use the `trad-core' bfd). The file contents are as 9 * follows: 10 * 11 * upage: 1 page consisting of a user struct that tells gdb 12 * what is present in the file. Directly after this is a 13 * copy of the task_struct, which is currently not used by gdb, 14 * but it may come in handy at some point. All of the registers 15 * are stored as part of the upage. The upage should always be 16 * only one page long. 17 * data: The data segment follows next. We use current->end_text to 18 * current->brk to pick up all of the user variables, plus any memory 19 * that may have been sbrk'ed. No attempt is made to determine if a 20 * page is demand-zero or if a page is totally unused, we just cover 21 * the entire range. All of the addresses are rounded in such a way 22 * that an integral number of pages is written. 23 * stack: We need the stack information in order to get a meaningful 24 * backtrace. We need to write the data from usp to 25 * current->start_stack, so we round each of these in order to be able 26 * to write an integer number of pages. 27 * 28 * Modified 1998, 1999, 2001 29 * David Mosberger-Tang <davidm@hpl.hp.com>, Hewlett-Packard Co 30 */ 31 32 #include <linux/ptrace.h> 33 #include <linux/types.h> 34 35 #include <asm/page.h> 36 37 #define EF_SIZE 3072 /* XXX fix me */ 38 39 struct user { 40 unsigned long regs[EF_SIZE/8+32]; /* integer and fp regs */ 41 size_t u_tsize; /* text size (pages) */ 42 size_t u_dsize; /* data size (pages) */ 43 size_t u_ssize; /* stack size (pages) */ 44 unsigned long start_code; /* text starting address */ 45 unsigned long start_data; /* data starting address */ 46 unsigned long start_stack; /* stack starting address */ 47 long int signal; /* signal causing core dump */ 48 unsigned long u_ar0; /* help gdb find registers */ 49 unsigned long magic; /* identifies a core file */ 50 char u_comm[32]; /* user command name */ 51 }; 52 53 #define NBPG PAGE_SIZE 54 #define UPAGES 1 55 #define HOST_TEXT_START_ADDR (u.start_code) 56 #define HOST_DATA_START_ADDR (u.start_data) 57 #define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG) 58 59 #endif /* _ASM_IA64_USER_H */ 60