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/*
* arch/ubicom32/include/asm/ptrace.h
* Ubicom32 architecture ptrace support.
*
* (C) Copyright 2009, Ubicom, Inc.
*
* This file is part of the Ubicom32 Linux Kernel Port.
*
* The Ubicom32 Linux Kernel Port is free software: you can redistribute
* it and/or modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, either version 2 of the
* License, or (at your option) any later version.
*
* The Ubicom32 Linux Kernel Port is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with the Ubicom32 Linux Kernel Port. If not,
* see <http://www.gnu.org/licenses/>.
*
* Ubicom32 implementation derived from (with many thanks):
* arch/m68knommu
* arch/blackfin
* arch/parisc
*/
#ifndef _ASM_UBICOM32_PTRACE_H
#define _ASM_UBICOM32_PTRACE_H
#ifndef __ASSEMBLY__
/*
* We use hard coded constants because this is shared with user
* space and the values are NOT allowed to change. Only fields
* that are intended to be exposed get values.
*/
#define PT_D0 0
#define PT_D1 4
#define PT_D2 8
#define PT_D3 12
#define PT_D4 16
#define PT_D5 20
#define PT_D6 24
#define PT_D7 28
#define PT_D8 32
#define PT_D9 36
#define PT_D10 40
#define PT_D11 44
#define PT_D12 48
#define PT_D13 52
#define PT_D14 56
#define PT_D15 60
#define PT_A0 64
#define PT_A1 68
#define PT_A2 72
#define PT_A3 76
#define PT_A4 80
#define PT_A5 84
#define PT_A6 88
#define PT_A7 92
#define PT_SP 92
#define PT_ACC0HI 96
#define PT_ACC0LO 100
#define PT_MAC_RC16 104
#define PT_ACC1HI 108
#define PT_ACC1LO 112
#define PT_SOURCE3 116
#define PT_INST_CNT 120
#define PT_CSR 124
#define PT_DUMMY_UNUSED 128
#define PT_INT_MASK0 132
#define PT_INT_MASK1 136
#define PT_TRAP_CAUSE 140
#define PT_PC 144
#define PT_ORIGINAL_D0 148
#define PT_FRAME_TYPE 152
/*
* The following 'registers' are not registers at all but are used
* locate the relocated sections.
*/
#define PT_TEXT_ADDR 200
#define PT_TEXT_END_ADDR 204
#define PT_DATA_ADDR 208
#define PT_EXEC_FDPIC_LOADMAP 212
#define PT_INTERP_FDPIC_LOADMAP 216
/*
* This struct defines the way the registers are stored on the
* stack during a system call.
*/
enum thread_type {
NORMAL_THREAD,
KERNEL_THREAD,
};
#define UBICOM32_FRAME_TYPE_SYSCALL -1 /* System call frame */
#define UBICOM32_FRAME_TYPE_INVALID 0 /* Invalid frame, no longer in use */
#define UBICOM32_FRAME_TYPE_INTERRUPT 1 /* Interrupt frame */
#define UBICOM32_FRAME_TYPE_TRAP 2 /* Trap frame */
#define UBICOM32_FRAME_TYPE_SIGTRAMP 3 /* Signal trampoline frame. */
#define UBICOM32_FRAME_TYPE_NEW_THREAD 4 /* New Thread. */
struct pt_regs {
/*
* Data Registers
*/
unsigned long dn[16];
/*
* Address Registers
*/
unsigned long an[8];
/*
* Per thread misc registers.
*/
unsigned long acc0[2];
unsigned long mac_rc16;
unsigned long acc1[2];
unsigned long source3;
unsigned long inst_cnt;
unsigned long csr;
unsigned long dummy_unused;
unsigned long int_mask0;
unsigned long int_mask1;
unsigned long trap_cause;
unsigned long pc;
unsigned long original_dn_0;
/*
* Frame type. Syscall frames are -1. For other types look above.
*/
unsigned long frame_type;
/*
* These fields are not exposed to ptrace.
*/
unsigned long previous_pc;
long nesting_level; /* When the kernel in in user space this
* will be -1. */
unsigned long thread_type; /* This indicates if this is a kernel
* thread. */
};
/*
* This is the extended stack used by signal handlers and the context
* switcher: it's pushed after the normal "struct pt_regs".
*/
struct switch_stack {
unsigned long dummy;
};
#ifdef __KERNEL__
/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
#define PTRACE_GETREGS 12
#define PTRACE_SETREGS 13
#ifndef PS_S
#define PS_S (0x2000)
#define PS_M (0x1000)
#endif
extern int __user_mode(unsigned long sp);
#define user_mode(regs) (__user_mode((regs->an[7])))
#define user_stack(regs) ((regs)->an[7])
#define instruction_pointer(regs) ((regs)->pc)
#define profile_pc(regs) instruction_pointer(regs)
extern void show_regs(struct pt_regs *);
#endif /* __KERNEL__ */
#endif /* __ASSEMBLY__ */
#endif /* _ASM_UBICOM32_PTRACE_H */
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