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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. */
- /* FIXME: What should this be on 64-bit kernel (64 for 32-bit) */
- #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 */