projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 1da177e4 LT |
2 | #ifndef _ASM_M32R_USER_H |
| 3 | #define _ASM_M32R_USER_H | |
| 4 | ||
| 1da177e4 | 5 | #include <linux/types.h> |
| 1da177e4 LT |
6 | #include <asm/ptrace.h> |
| 7 | #include <asm/page.h> | |
| 8 | ||
| 9 | /* | |
| 10 | * Core file format: The core file is written in such a way that gdb | |
| 11 | * can understand it and provide useful information to the user (under | |
| 12 | * linux we use the `trad-core' bfd). | |
| 13 | * | |
| 14 | * The actual file contents are as follows: | |
| 15 | * UPAGE: 1 page consisting of a user struct that tells gdb | |
| 16 | * what is present in the file. Directly after this is a | |
| 17 | * copy of the task_struct, which is currently not used by gdb, | |
| 18 | * but it may come in handy at some point. All of the registers | |
| 19 | * are stored as part of the upage. The upage should always be | |
| 20 | * only one page. | |
| 21 | * DATA: The data area is stored. We use current->end_text to | |
| 22 | * current->brk to pick up all of the user variables, plus any memory | |
| 23 | * that may have been sbrk'ed. No attempt is made to determine if a | |
| 24 | * page is demand-zero or if a page is totally unused, we just cover | |
| 25 | * the entire range. All of the addresses are rounded in such a way | |
| 26 | * that an integral number of pages is written. | |
| 27 | * STACK: We need the stack information in order to get a meaningful | |
| 28 | * backtrace. We need to write the data from usp to | |
| 29 | * current->start_stack, so we round each of these off in order to be | |
| 30 | * able to write an integer number of pages. | |
| 31 | */ | |
| 32 | ||
| 33 | struct user { | |
| 34 | struct pt_regs regs; /* entire machine state */ | |
| 35 | size_t u_tsize; /* text size (pages) */ | |
| 36 | size_t u_dsize; /* data size (pages) */ | |
| 37 | size_t u_ssize; /* stack size (pages) */ | |
| 38 | unsigned long start_code; /* text starting address */ | |
| 39 | unsigned long start_data; /* data starting address */ | |
| 40 | unsigned long start_stack; /* stack starting address */ | |
| 41 | long int signal; /* signal causing core dump */ | |
| 6e16d89b | 42 | unsigned long u_ar0; /* help gdb find registers */ |
| 1da177e4 LT |
43 | unsigned long magic; /* identifies a core file */ |
| 44 | char u_comm[32]; /* user command name */ | |
| 45 | }; | |
| 46 | ||
| 47 | #define NBPG PAGE_SIZE | |
| 48 | #define UPAGES 1 | |
| 49 | #define HOST_TEXT_START_ADDR (u.start_code) | |
| 50 | #define HOST_DATA_START_ADDR (u.start_data) | |
| 51 | #define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG) | |
| 52 | ||
| 53 | #endif /* _ASM_M32R_USER_H */ |