1 #ifndef _ASM_M32R_USER_H 2 #define _ASM_M32R_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). 12 * 13 * The actual file contents are as follows: 14 * UPAGE: 1 page consisting of a user struct that tells gdb 15 * what is present in the file. Directly after this is a 16 * copy of the task_struct, which is currently not used by gdb, 17 * but it may come in handy at some point. All of the registers 18 * are stored as part of the upage. The upage should always be 19 * only one page. 20 * DATA: The data area is stored. We use current->end_text to 21 * current->brk to pick up all of the user variables, plus any memory 22 * that may have been sbrk'ed. No attempt is made to determine if a 23 * page is demand-zero or if a page is totally unused, we just cover 24 * the entire range. All of the addresses are rounded in such a way 25 * that an integral number of pages is written. 26 * STACK: We need the stack information in order to get a meaningful 27 * backtrace. We need to write the data from usp to 28 * current->start_stack, so we round each of these off in order to be 29 * able to write an integer number of pages. 30 */ 31 32 struct user { 33 struct pt_regs regs; /* entire machine state */ 34 size_t u_tsize; /* text size (pages) */ 35 size_t u_dsize; /* data size (pages) */ 36 size_t u_ssize; /* stack size (pages) */ 37 unsigned long start_code; /* text starting address */ 38 unsigned long start_data; /* data starting address */ 39 unsigned long start_stack; /* stack starting address */ 40 long int signal; /* signal causing core dump */ 41 unsigned long u_ar0; /* help gdb find registers */ 42 unsigned long magic; /* identifies a core file */ 43 char u_comm[32]; /* user command name */ 44 }; 45 46 #define NBPG PAGE_SIZE 47 #define UPAGES 1 48 #define HOST_TEXT_START_ADDR (u.start_code) 49 #define HOST_DATA_START_ADDR (u.start_data) 50 #define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG) 51 52 #endif /* _ASM_M32R_USER_H */ 53