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| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | #ifndef __ASM_SH_USER_H |
| 3 | #define __ASM_SH_USER_H |
| 4 | |
| 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). The file contents are as follows: |
| 12 | * |
| 13 | * upage: 1 page consisting of a user struct that tells gdb |
| 14 | * what is present in the file. Directly after this is a |
| 15 | * copy of the task_struct, which is currently not used by gdb, |
| 16 | * but it may come in handy at some point. All of the registers |
| 17 | * are stored as part of the upage. The upage should always be |
| 18 | * only one page long. |
| 19 | * data: The data segment follows next. We use current->end_text to |
| 20 | * current->brk to pick up all of the user variables, plus any memory |
| 21 | * that may have been sbrk'ed. No attempt is made to determine if a |
| 22 | * page is demand-zero or if a page is totally unused, we just cover |
| 23 | * the entire range. All of the addresses are rounded in such a way |
| 24 | * that an integral number of pages is written. |
| 25 | * stack: We need the stack information in order to get a meaningful |
| 26 | * backtrace. We need to write the data from usp to |
| 27 | * current->start_stack, so we round each of these in order to be able |
| 28 | * to write an integer number of pages. |
| 29 | */ |
| 30 | |
| 31 | struct user_fpu_struct { |
| 32 | unsigned long fp_regs[16]; |
| 33 | unsigned long xfp_regs[16]; |
| 34 | unsigned long fpscr; |
| 35 | unsigned long fpul; |
| 36 | }; |
| 37 | |
| 38 | struct user { |
| 39 | struct pt_regs regs; /* entire machine state */ |
| 40 | struct user_fpu_struct fpu; /* Math Co-processor registers */ |
| 41 | int u_fpvalid; /* True if math co-processor being used */ |
| 42 | size_t u_tsize; /* text size (pages) */ |
| 43 | size_t u_dsize; /* data size (pages) */ |
| 44 | size_t u_ssize; /* stack size (pages) */ |
| 45 | unsigned long start_code; /* text starting address */ |
| 46 | unsigned long start_data; /* data starting address */ |
| 47 | unsigned long start_stack; /* stack starting address */ |
| 48 | long int signal; /* signal causing core dump */ |
| 49 | unsigned long u_ar0; /* help gdb find registers */ |
| 50 | struct user_fpu_struct* u_fpstate; /* Math Co-processor pointer */ |
| 51 | unsigned long magic; /* identifies a core file */ |
| 52 | char u_comm[32]; /* user command name */ |
| 53 | }; |
| 54 | |
| 55 | #endif /* __ASM_SH_USER_H */ |
| 56 |
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