1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef _ASM_IA64_USER_H 3*4882a593Smuzhiyun #define _ASM_IA64_USER_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun /* 6*4882a593Smuzhiyun * Core file format: The core file is written in such a way that gdb 7*4882a593Smuzhiyun * can understand it and provide useful information to the user (under 8*4882a593Smuzhiyun * linux we use the `trad-core' bfd). The file contents are as 9*4882a593Smuzhiyun * follows: 10*4882a593Smuzhiyun * 11*4882a593Smuzhiyun * upage: 1 page consisting of a user struct that tells gdb 12*4882a593Smuzhiyun * what is present in the file. Directly after this is a 13*4882a593Smuzhiyun * copy of the task_struct, which is currently not used by gdb, 14*4882a593Smuzhiyun * but it may come in handy at some point. All of the registers 15*4882a593Smuzhiyun * are stored as part of the upage. The upage should always be 16*4882a593Smuzhiyun * only one page long. 17*4882a593Smuzhiyun * data: The data segment follows next. We use current->end_text to 18*4882a593Smuzhiyun * current->brk to pick up all of the user variables, plus any memory 19*4882a593Smuzhiyun * that may have been sbrk'ed. No attempt is made to determine if a 20*4882a593Smuzhiyun * page is demand-zero or if a page is totally unused, we just cover 21*4882a593Smuzhiyun * the entire range. All of the addresses are rounded in such a way 22*4882a593Smuzhiyun * that an integral number of pages is written. 23*4882a593Smuzhiyun * stack: We need the stack information in order to get a meaningful 24*4882a593Smuzhiyun * backtrace. We need to write the data from usp to 25*4882a593Smuzhiyun * current->start_stack, so we round each of these in order to be able 26*4882a593Smuzhiyun * to write an integer number of pages. 27*4882a593Smuzhiyun * 28*4882a593Smuzhiyun * Modified 1998, 1999, 2001 29*4882a593Smuzhiyun * David Mosberger-Tang <davidm@hpl.hp.com>, Hewlett-Packard Co 30*4882a593Smuzhiyun */ 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun #include <linux/ptrace.h> 33*4882a593Smuzhiyun #include <linux/types.h> 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun #include <asm/page.h> 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun #define EF_SIZE 3072 /* XXX fix me */ 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun struct user { 40*4882a593Smuzhiyun unsigned long regs[EF_SIZE/8+32]; /* integer and fp regs */ 41*4882a593Smuzhiyun size_t u_tsize; /* text size (pages) */ 42*4882a593Smuzhiyun size_t u_dsize; /* data size (pages) */ 43*4882a593Smuzhiyun size_t u_ssize; /* stack size (pages) */ 44*4882a593Smuzhiyun unsigned long start_code; /* text starting address */ 45*4882a593Smuzhiyun unsigned long start_data; /* data starting address */ 46*4882a593Smuzhiyun unsigned long start_stack; /* stack starting address */ 47*4882a593Smuzhiyun long int signal; /* signal causing core dump */ 48*4882a593Smuzhiyun unsigned long u_ar0; /* help gdb find registers */ 49*4882a593Smuzhiyun unsigned long magic; /* identifies a core file */ 50*4882a593Smuzhiyun char u_comm[32]; /* user command name */ 51*4882a593Smuzhiyun }; 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun #define NBPG PAGE_SIZE 54*4882a593Smuzhiyun #define UPAGES 1 55*4882a593Smuzhiyun #define HOST_TEXT_START_ADDR (u.start_code) 56*4882a593Smuzhiyun #define HOST_DATA_START_ADDR (u.start_data) 57*4882a593Smuzhiyun #define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG) 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun #endif /* _ASM_IA64_USER_H */ 60