108 lines
2.4 KiB
C
108 lines
2.4 KiB
C
|
#ifndef _PPC_PTRACE_H
|
||
|
|
#define _PPC_PTRACE_H
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/config.h>
|
||
|
|
|
||
|
|
#ifndef __ASSEMBLY__
|
||
|
|
#ifdef CONFIG_PPC64BRIDGE
|
||
|
|
#define PPC_REG unsigned long /*long*/
|
||
|
|
#else
|
||
|
|
#define PPC_REG unsigned long
|
||
|
|
#endif
|
||
|
|
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 mq; /* 601 only (not used at present) */
|
||
|
|
/* Used on APUS to hold IPL value. */
|
||
|
|
PPC_REG trap; /* Reason for being here */
|
||
|
|
PPC_REG dar; /* Fault registers */
|
||
|
|
PPC_REG dsisr;
|
||
|
|
PPC_REG result; /* Result of a system call */
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define STACK_FRAME_OVERHEAD 16 /* size of minimum stack frame */
|
||
|
|
|
||
|
|
/* Size of stack frame allocated when calling signal handler. */
|
||
|
|
#define __SIGNAL_FRAMESIZE 64
|
||
|
|
|
||
|
|
#define instruction_pointer(regs) ((regs)->nip)
|
||
|
|
#define user_mode(regs) (((regs)->msr & MSR_PR) != 0)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Offsets used by 'ptrace' system call interface.
|
||
|
|
* These can't be changed without breaking binary compatibility
|
||
|
|
* with MkLinux, etc.
|
||
|
|
*/
|
||
|
|
#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_MQ 39
|
||
|
|
|
||
|
|
#define PT_FPR0 48 /* each FP reg occupies 2 slots in this space */
|
||
|
|
#define PT_FPR31 (PT_FPR0 + 2*31)
|
||
|
|
#define PT_FPSCR (PT_FPR0 + 2*32 + 1)
|
||
|
|
|
||
|
|
#endif
|