| David Howells | 8359672 | 2012-10-15 03:55:40 +0400 | [diff] [blame] | 1 | /* |
| 2 | * include/asm-xtensa/ptrace.h |
| 3 | * |
| 4 | * This file is subject to the terms and conditions of the GNU General Public |
| 5 | * License. See the file "COPYING" in the main directory of this archive |
| 6 | * for more details. |
| 7 | * |
| 8 | * Copyright (C) 2001 - 2005 Tensilica Inc. |
| 9 | */ |
| 10 | |
| 11 | #ifndef _UAPI_XTENSA_PTRACE_H |
| 12 | #define _UAPI_XTENSA_PTRACE_H |
| 13 | |
| 14 | /* |
| 15 | * Kernel stack |
| 16 | * |
| 17 | * +-----------------------+ -------- STACK_SIZE |
| 18 | * | register file | | |
| 19 | * +-----------------------+ | |
| 20 | * | struct pt_regs | | |
| 21 | * +-----------------------+ | ------ PT_REGS_OFFSET |
| 22 | * double : 16 bytes spill area : | ^ |
| 23 | * excetion :- - - - - - - - - - - -: | | |
| 24 | * frame : struct pt_regs : | | |
| 25 | * :- - - - - - - - - - - -: | | |
| 26 | * | | | | |
| 27 | * | memory stack | | | |
| 28 | * | | | | |
| 29 | * ~ ~ ~ ~ |
| 30 | * ~ ~ ~ ~ |
| 31 | * | | | | |
| 32 | * | | | | |
| 33 | * +-----------------------+ | | --- STACK_BIAS |
| 34 | * | struct task_struct | | | ^ |
| 35 | * current --> +-----------------------+ | | | |
| 36 | * | struct thread_info | | | | |
| 37 | * +-----------------------+ -------- |
| 38 | */ |
| 39 | |
| 40 | #define KERNEL_STACK_SIZE (2 * PAGE_SIZE) |
| 41 | |
| 42 | /* Offsets for exception_handlers[] (3 x 64-entries x 4-byte tables). */ |
| 43 | |
| 44 | #define EXC_TABLE_KSTK 0x004 /* Kernel Stack */ |
| 45 | #define EXC_TABLE_DOUBLE_SAVE 0x008 /* Double exception save area for a0 */ |
| 46 | #define EXC_TABLE_FIXUP 0x00c /* Fixup handler */ |
| 47 | #define EXC_TABLE_PARAM 0x010 /* For passing a parameter to fixup */ |
| 48 | #define EXC_TABLE_SYSCALL_SAVE 0x014 /* For fast syscall handler */ |
| 49 | #define EXC_TABLE_FAST_USER 0x100 /* Fast user exception handler */ |
| 50 | #define EXC_TABLE_FAST_KERNEL 0x200 /* Fast kernel exception handler */ |
| 51 | #define EXC_TABLE_DEFAULT 0x300 /* Default C-Handler */ |
| 52 | #define EXC_TABLE_SIZE 0x400 |
| 53 | |
| 54 | /* Registers used by strace */ |
| 55 | |
| 56 | #define REG_A_BASE 0x0000 |
| 57 | #define REG_AR_BASE 0x0100 |
| 58 | #define REG_PC 0x0020 |
| 59 | #define REG_PS 0x02e6 |
| 60 | #define REG_WB 0x0248 |
| 61 | #define REG_WS 0x0249 |
| 62 | #define REG_LBEG 0x0200 |
| 63 | #define REG_LEND 0x0201 |
| 64 | #define REG_LCOUNT 0x0202 |
| 65 | #define REG_SAR 0x0203 |
| 66 | |
| 67 | #define SYSCALL_NR 0x00ff |
| 68 | |
| 69 | /* Other PTRACE_ values defined in <linux/ptrace.h> using values 0-9,16,17,24 */ |
| 70 | |
| 71 | #define PTRACE_GETREGS 12 |
| 72 | #define PTRACE_SETREGS 13 |
| 73 | #define PTRACE_GETXTREGS 18 |
| 74 | #define PTRACE_SETXTREGS 19 |
| 75 | |
| 76 | |
| 77 | #endif /* _UAPI_XTENSA_PTRACE_H */ |