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#ifndef _PPC64_PTRACE_H
#define _PPC64_PTRACE_H
/*
* Copyright (C) 2001 PPC64 Team, IBM Corp
*
* This struct defines the way the registers are stored on the
* kernel stack during a system call or other kernel entry.
*
* this should only contain volatile regs
* since we can keep non-volatile in the thread_struct
* should set this up when only volatiles are saved
* by intr code.
*
* Since this is going on the stack, *CARE MUST BE TAKEN* to insure
* that the overall structure is a multiple of 16 bytes in length.
*
* Note that the offsets of the fields in this struct correspond with
* the PT_* values below. This simplifies arch/ppc/kernel/ptrace.c.
*
* This program 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.
*/
#define INIT_TASK_SIZE 4*PAGE_SIZE
#ifndef __ASSEMBLY__
#define PPC_REG unsigned long
struct pt_regs {
PPC_REG gpr[32];
PPC_REG nip;
PPC_REG msr;
PPC_REG orig_gpr3; /* Used for restarting system calls */
PPC_REG ctr;
PPC_REG link;
PPC_REG xer;
PPC_REG ccr;
PPC_REG softe; /* Soft enabled/disabled */
PPC_REG trap; /* Reason for being here */
PPC_REG dar; /* Fault registers */
PPC_REG dsisr;
PPC_REG result; /* Result of a system call */
};
#define PPC_REG_32 unsigned int
struct pt_regs32 {
PPC_REG_32 gpr[32];
PPC_REG_32 nip;
PPC_REG_32 msr;
PPC_REG_32 orig_gpr3; /* Used for restarting system calls */
PPC_REG_32 ctr;
PPC_REG_32 link;
PPC_REG_32 xer;
PPC_REG_32 ccr;
PPC_REG_32 mq; /* 601 only (not used at present) */
/* Used on APUS to hold IPL value. */
PPC_REG_32 trap; /* Reason for being here */
PPC_REG_32 dar; /* Fault registers */
PPC_REG_32 dsisr;
PPC_REG_32 result; /* Result of a system call */
};
#endif
#define STACK_FRAME_OVERHEAD 112 /* size of minimum stack frame */
/* Size of stack frame allocated when calling signal handler. */
#define __SIGNAL_FRAMESIZE 64
#define __SIGNAL_FRAMESIZE32 64
#define instruction_pointer(regs) ((regs)->nip)
#define user_mode(regs) ((((regs)->msr) >> MSR_PR_LG) & 0x1)
/*
* Offsets used by 'ptrace' system call interface.
*/
#define PT_R0 0
#define PT_R1 1
#define PT_R2 2
#define PT_R3 3
#define PT_R4 4
#define PT_R5 5
#define PT_R6 6
#define PT_R7 7
#define PT_R8 8
#define PT_R9 9
#define PT_R10 10
#define PT_R11 11
#define PT_R12 12
#define PT_R13 13
#define PT_R14 14
#define PT_R15 15
#define PT_R16 16
#define PT_R17 17
#define PT_R18 18
#define PT_R19 19
#define PT_R20 20
#define PT_R21 21
#define PT_R22 22
#define PT_R23 23
#define PT_R24 24
#define PT_R25 25
#define PT_R26 26
#define PT_R27 27
#define PT_R28 28
#define PT_R29 29
#define PT_R30 30
#define PT_R31 31
#define PT_NIP 32
#define PT_MSR 33
#ifdef __KERNEL__
#define PT_ORIG_R3 34
#endif
#define PT_CTR 35
#define PT_LNK 36
#define PT_XER 37
#define PT_CCR 38
#define PT_SOFTE 39
#define PT_RESULT 43
#define PT_FPR0 48
#ifdef __KERNEL__
#define PT_FPSCR (PT_FPR0 + 32 + 1) /* each FP reg occupies 1 slot in this space */
#define PT_FPSCR32 (PT_FPR0 + 2*32 + 1) /* To the 32-bit user - each FP reg occupies 2 slots in this space */
#else
#define PT_FPSCR (PT_FPR0 + 2*32 + 1) /* each FP reg occupies 2 slots in this space -- Fix when 64-bit apps. */
#endif
/* Additional PTRACE requests implemented on PowerPC. */
#define PPC_PTRACE_GETREGS 0x99 /* Get GPRs 0 - 31 */
#define PPC_PTRACE_SETREGS 0x98 /* Set GPRs 0 - 31 */
#define PPC_PTRACE_GETFPREGS 0x97 /* Get FPRs 0 - 31 */
#define PPC_PTRACE_SETFPREGS 0x96 /* Set FPRs 0 - 31 */
#define PPC_PTRACE_PEEKTEXT_3264 0x95 /* Read word at location ADDR on a 64-bit process from a 32-bit process. */
#define PPC_PTRACE_PEEKDATA_3264 0x94 /* Read word at location ADDR on a 64-bit process from a 32-bit process. */
#define PPC_PTRACE_POKETEXT_3264 0x93 /* Write word at location ADDR on a 64-bit process from a 32-bit process. */
#define PPC_PTRACE_POKEDATA_3264 0x92 /* Write word at location ADDR on a 64-bit process from a 32-bit process. */
#define PPC_PTRACE_PEEKUSR_3264 0x91 /* Read a register (specified by ADDR) out of the "user area" on a 64-bit process from a 32-bit process. */
#define PPC_PTRACE_POKEUSR_3264 0x90 /* Write DATA into location ADDR within the "user area" on a 64-bit process from a 32-bit process. */
#endif /* _PPC64_PTRACE_H */
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