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 #define PTRACE_GETHBPREGS 20 76 #define PTRACE_SETHBPREGS 21 77 78 79 #endif /* _UAPI_XTENSA_PTRACE_H */ 80