include/asm-powerpc/ptrace.h - kernel/msm - Gitiles

 #ifndef _ASM_POWERPC_PTRACE_H
 #define _ASM_POWERPC_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/powerpc/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.
  */

 #ifndef __ASSEMBLY__

 struct pt_regs {
 	unsigned long gpr[32];
 	unsigned long nip;
 	unsigned long msr;
 	unsigned long orig_gpr3;	/* Used for restarting system calls */
 	unsigned long ctr;
 	unsigned long link;
 	unsigned long xer;
 	unsigned long ccr;
 #ifdef __powerpc64__
 	unsigned long softe;		/* Soft enabled/disabled */
 #else
 	unsigned long mq;		/* 601 only (not used at present) */
 					/* Used on APUS to hold IPL value. */
 #endif
 	unsigned long trap;		/* Reason for being here */
 	/* N.B. for critical exceptions on 4xx, the dar and dsisr
 	   fields are overloaded to hold srr0 and srr1. */
 	unsigned long dar;		/* Fault registers */
 	unsigned long dsisr;		/* on 4xx/Book-E used for ESR */
 	unsigned long result;		/* Result of a system call */
 };

 #endif /* __ASSEMBLY__ */

 #ifdef __KERNEL__

 #ifdef __powerpc64__

 #define __ARCH_WANT_COMPAT_SYS_PTRACE

 #define STACK_FRAME_OVERHEAD	112	/* size of minimum stack frame */
 #define STACK_FRAME_LR_SAVE	2	/* Location of LR in stack frame */
 #define STACK_FRAME_REGS_MARKER	ASM_CONST(0x7265677368657265)
 #define STACK_INT_FRAME_SIZE	(sizeof(struct pt_regs) + \
 					STACK_FRAME_OVERHEAD + 288)
 #define STACK_FRAME_MARKER	12

 /* Size of dummy stack frame allocated when calling signal handler. */
 #define __SIGNAL_FRAMESIZE	128
 #define __SIGNAL_FRAMESIZE32	64

 #else /* __powerpc64__ */

 #define STACK_FRAME_OVERHEAD	16	/* size of minimum stack frame */
 #define STACK_FRAME_LR_SAVE	1	/* Location of LR in stack frame */
 #define STACK_FRAME_REGS_MARKER	ASM_CONST(0x72656773)
 #define STACK_INT_FRAME_SIZE	(sizeof(struct pt_regs) + STACK_FRAME_OVERHEAD)
 #define STACK_FRAME_MARKER	2

 /* Size of stack frame allocated when calling signal handler. */
 #define __SIGNAL_FRAMESIZE	64

 #endif /* __powerpc64__ */

 #ifndef __ASSEMBLY__

 #define instruction_pointer(regs) ((regs)->nip)
 #define regs_return_value(regs) ((regs)->gpr[3])

 #ifdef CONFIG_SMP
 extern unsigned long profile_pc(struct pt_regs *regs);
 #else
 #define profile_pc(regs) instruction_pointer(regs)
 #endif

 #ifdef __powerpc64__
 #define user_mode(regs) ((((regs)->msr) >> MSR_PR_LG) & 0x1)
 #else
 #define user_mode(regs) (((regs)->msr & MSR_PR) != 0)
 #endif

 #define force_successful_syscall_return()   \
 	do { \
 		set_thread_flag(TIF_NOERROR); \
 	} while(0)

 struct task_struct;
 extern unsigned long ptrace_get_reg(struct task_struct *task, int regno);
 extern int ptrace_put_reg(struct task_struct *task, int regno,
 			  unsigned long data);

 /*
  * We use the least-significant bit of the trap field to indicate
  * whether we have saved the full set of registers, or only a
  * partial set.  A 1 there means the partial set.
  * On 4xx we use the next bit to indicate whether the exception
  * is a critical exception (1 means it is).
  */
 #define FULL_REGS(regs)		(((regs)->trap & 1) == 0)
 #ifndef __powerpc64__
 #define IS_CRITICAL_EXC(regs)	(((regs)->trap & 2) != 0)
 #define IS_MCHECK_EXC(regs)	(((regs)->trap & 4) != 0)
 #define IS_DEBUG_EXC(regs)	(((regs)->trap & 8) != 0)
 #endif /* ! __powerpc64__ */
 #define TRAP(regs)		((regs)->trap & ~0xF)
 #ifdef __powerpc64__
 #define CHECK_FULL_REGS(regs)	BUG_ON(regs->trap & 1)
 #else
 #define CHECK_FULL_REGS(regs)						      \
 do {									      \
 	if ((regs)->trap & 1)						      \
 		printk(KERN_CRIT "%s: partial register set\n", __FUNCTION__); \
 } while (0)
 #endif /* __powerpc64__ */

 /*
  * These are defined as per linux/ptrace.h, which see.
  */
 #define arch_has_single_step()	(1)
 extern void user_enable_single_step(struct task_struct *);
 extern void user_disable_single_step(struct task_struct *);

 #endif /* __ASSEMBLY__ */

 #endif /* __KERNEL__ */

 /*
  * 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
 #define PT_ORIG_R3 34
 #define PT_CTR	35
 #define PT_LNK	36
 #define PT_XER	37
 #define PT_CCR	38
 #ifndef __powerpc64__
 #define PT_MQ	39
 #else
 #define PT_SOFTE 39
 #endif
 #define PT_TRAP	40
 #define PT_DAR	41
 #define PT_DSISR 42
 #define PT_RESULT 43
 #define PT_REGS_COUNT 44

 #define PT_FPR0	48	/* each FP reg occupies 2 slots in this space */

 #ifndef __powerpc64__

 #define PT_FPR31 (PT_FPR0 + 2*31)
 #define PT_FPSCR (PT_FPR0 + 2*32 + 1)

 #else /* __powerpc64__ */

 #define PT_FPSCR (PT_FPR0 + 32)	/* each FP reg occupies 1 slot in 64-bit space */

 #ifdef __KERNEL__
 #define PT_FPSCR32 (PT_FPR0 + 2*32 + 1)	/* each FP reg occupies 2 32-bit userspace slots */
 #endif

 #define PT_VR0 82	/* each Vector reg occupies 2 slots in 64-bit */
 #define PT_VSCR (PT_VR0 + 32*2 + 1)
 #define PT_VRSAVE (PT_VR0 + 33*2)

 #ifdef __KERNEL__
 #define PT_VR0_32 164	/* each Vector reg occupies 4 slots in 32-bit */
 #define PT_VSCR_32 (PT_VR0 + 32*4 + 3)
 #define PT_VRSAVE_32 (PT_VR0 + 33*4)
 #endif

 #endif /* __powerpc64__ */

 /*
  * Get/set all the altivec registers vr0..vr31, vscr, vrsave, in one go.
  * The transfer totals 34 quadword.  Quadwords 0-31 contain the
  * corresponding vector registers.  Quadword 32 contains the vscr as the
  * last word (offset 12) within that quadword.  Quadword 33 contains the
  * vrsave as the first word (offset 0) within the quadword.
  *
  * This definition of the VMX state is compatible with the current PPC32
  * ptrace interface.  This allows signal handling and ptrace to use the same
  * structures.  This also simplifies the implementation of a bi-arch
  * (combined (32- and 64-bit) gdb.
  */
 #define PTRACE_GETVRREGS	18
 #define PTRACE_SETVRREGS	19

 /* Get/set all the upper 32-bits of the SPE registers, accumulator, and
  * spefscr, in one go */
 #define PTRACE_GETEVRREGS	20
 #define PTRACE_SETEVRREGS	21

 /*
  * Get or set a debug register. The first 16 are DABR registers and the
  * second 16 are IABR registers.
  */
 #define PTRACE_GET_DEBUGREG	25
 #define PTRACE_SET_DEBUGREG	26

 /* (new) PTRACE requests using the same numbers as x86 and the same
  * argument ordering. Additionally, they support more registers too
  */
 #define PTRACE_GETREGS            12
 #define PTRACE_SETREGS            13
 #define PTRACE_GETFPREGS          14
 #define PTRACE_SETFPREGS          15
 #define PTRACE_GETREGS64	  22
 #define PTRACE_SETREGS64	  23

 /* (old) PTRACE requests with inverted arguments */
 #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 */

 /* Calls to trace a 64bit program from a 32bit program */
 #define PPC_PTRACE_PEEKTEXT_3264 0x95
 #define PPC_PTRACE_PEEKDATA_3264 0x94
 #define PPC_PTRACE_POKETEXT_3264 0x93
 #define PPC_PTRACE_POKEDATA_3264 0x92
 #define PPC_PTRACE_PEEKUSR_3264  0x91
 #define PPC_PTRACE_POKEUSR_3264  0x90

 #endif /* _ASM_POWERPC_PTRACE_H */
	#ifndef _ASM_POWERPC_PTRACE_H
	#define _ASM_POWERPC_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/powerpc/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.
	*/

	#ifndef __ASSEMBLY__

	struct pt_regs {
	unsigned long gpr[32];
	unsigned long nip;
	unsigned long msr;
	unsigned long orig_gpr3; /* Used for restarting system calls */
	unsigned long ctr;
	unsigned long link;
	unsigned long xer;
	unsigned long ccr;
	#ifdef __powerpc64__
	unsigned long softe; /* Soft enabled/disabled */
	#else
	unsigned long mq; /* 601 only (not used at present) */
	/* Used on APUS to hold IPL value. */
	#endif
	unsigned long trap; /* Reason for being here */
	/* N.B. for critical exceptions on 4xx, the dar and dsisr
	fields are overloaded to hold srr0 and srr1. */
	unsigned long dar; /* Fault registers */
	unsigned long dsisr; /* on 4xx/Book-E used for ESR */
	unsigned long result; /* Result of a system call */
	};

	#endif /* __ASSEMBLY__ */

	#ifdef __KERNEL__

	#ifdef __powerpc64__

	#define __ARCH_WANT_COMPAT_SYS_PTRACE

	#define STACK_FRAME_OVERHEAD 112 /* size of minimum stack frame */
	#define STACK_FRAME_LR_SAVE 2 /* Location of LR in stack frame */
	#define STACK_FRAME_REGS_MARKER ASM_CONST(0x7265677368657265)
	#define STACK_INT_FRAME_SIZE (sizeof(struct pt_regs) + \
	STACK_FRAME_OVERHEAD + 288)
	#define STACK_FRAME_MARKER 12

	/* Size of dummy stack frame allocated when calling signal handler. */
	#define __SIGNAL_FRAMESIZE 128
	#define __SIGNAL_FRAMESIZE32 64

	#else /* __powerpc64__ */

	#define STACK_FRAME_OVERHEAD 16 /* size of minimum stack frame */
	#define STACK_FRAME_LR_SAVE 1 /* Location of LR in stack frame */
	#define STACK_FRAME_REGS_MARKER ASM_CONST(0x72656773)
	#define STACK_INT_FRAME_SIZE (sizeof(struct pt_regs) + STACK_FRAME_OVERHEAD)
	#define STACK_FRAME_MARKER 2

	/* Size of stack frame allocated when calling signal handler. */
	#define __SIGNAL_FRAMESIZE 64

	#endif /* __powerpc64__ */

	#ifndef __ASSEMBLY__

	#define instruction_pointer(regs) ((regs)->nip)
	#define regs_return_value(regs) ((regs)->gpr[3])

	#ifdef CONFIG_SMP
	extern unsigned long profile_pc(struct pt_regs *regs);
	#else
	#define profile_pc(regs) instruction_pointer(regs)
	#endif

	#ifdef __powerpc64__
	#define user_mode(regs) ((((regs)->msr) >> MSR_PR_LG) & 0x1)
	#else
	#define user_mode(regs) (((regs)->msr & MSR_PR) != 0)
	#endif

	#define force_successful_syscall_return() \
	do { \
	set_thread_flag(TIF_NOERROR); \
	} while(0)

	struct task_struct;
	extern unsigned long ptrace_get_reg(struct task_struct *task, int regno);
	extern int ptrace_put_reg(struct task_struct *task, int regno,
	unsigned long data);

	/*
	* We use the least-significant bit of the trap field to indicate
	* whether we have saved the full set of registers, or only a
	* partial set. A 1 there means the partial set.
	* On 4xx we use the next bit to indicate whether the exception
	* is a critical exception (1 means it is).
	*/
	#define FULL_REGS(regs) (((regs)->trap & 1) == 0)
	#ifndef __powerpc64__
	#define IS_CRITICAL_EXC(regs) (((regs)->trap & 2) != 0)
	#define IS_MCHECK_EXC(regs) (((regs)->trap & 4) != 0)
	#define IS_DEBUG_EXC(regs) (((regs)->trap & 8) != 0)
	#endif /* ! __powerpc64__ */
	#define TRAP(regs) ((regs)->trap & ~0xF)
	#ifdef __powerpc64__
	#define CHECK_FULL_REGS(regs) BUG_ON(regs->trap & 1)
	#else
	#define CHECK_FULL_REGS(regs) \
	do { \
	if ((regs)->trap & 1) \
	printk(KERN_CRIT "%s: partial register set\n", __FUNCTION__); \
	} while (0)
	#endif /* __powerpc64__ */

	/*
	* These are defined as per linux/ptrace.h, which see.
	*/
	#define arch_has_single_step() (1)
	extern void user_enable_single_step(struct task_struct *);
	extern void user_disable_single_step(struct task_struct *);

	#endif /* __ASSEMBLY__ */

	#endif /* __KERNEL__ */

	/*
	* 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
	#define PT_ORIG_R3 34
	#define PT_CTR 35
	#define PT_LNK 36
	#define PT_XER 37
	#define PT_CCR 38
	#ifndef __powerpc64__
	#define PT_MQ 39
	#else
	#define PT_SOFTE 39
	#endif
	#define PT_TRAP 40
	#define PT_DAR 41
	#define PT_DSISR 42
	#define PT_RESULT 43
	#define PT_REGS_COUNT 44

	#define PT_FPR0 48 /* each FP reg occupies 2 slots in this space */

	#ifndef __powerpc64__

	#define PT_FPR31 (PT_FPR0 + 2*31)
	#define PT_FPSCR (PT_FPR0 + 2*32 + 1)

	#else /* __powerpc64__ */

	#define PT_FPSCR (PT_FPR0 + 32) /* each FP reg occupies 1 slot in 64-bit space */

	#ifdef __KERNEL__
	#define PT_FPSCR32 (PT_FPR0 + 232 + 1) / each FP reg occupies 2 32-bit userspace slots */
	#endif

	#define PT_VR0 82 /* each Vector reg occupies 2 slots in 64-bit */
	#define PT_VSCR (PT_VR0 + 32*2 + 1)
	#define PT_VRSAVE (PT_VR0 + 33*2)

	#ifdef __KERNEL__
	#define PT_VR0_32 164 /* each Vector reg occupies 4 slots in 32-bit */
	#define PT_VSCR_32 (PT_VR0 + 32*4 + 3)
	#define PT_VRSAVE_32 (PT_VR0 + 33*4)
	#endif

	#endif /* __powerpc64__ */

	/*
	* Get/set all the altivec registers vr0..vr31, vscr, vrsave, in one go.
	* The transfer totals 34 quadword. Quadwords 0-31 contain the
	* corresponding vector registers. Quadword 32 contains the vscr as the
	* last word (offset 12) within that quadword. Quadword 33 contains the
	* vrsave as the first word (offset 0) within the quadword.
	*
	* This definition of the VMX state is compatible with the current PPC32
	* ptrace interface. This allows signal handling and ptrace to use the same
	* structures. This also simplifies the implementation of a bi-arch
	* (combined (32- and 64-bit) gdb.
	*/
	#define PTRACE_GETVRREGS 18
	#define PTRACE_SETVRREGS 19

	/* Get/set all the upper 32-bits of the SPE registers, accumulator, and
	* spefscr, in one go */
	#define PTRACE_GETEVRREGS 20
	#define PTRACE_SETEVRREGS 21

	/*
	* Get or set a debug register. The first 16 are DABR registers and the
	* second 16 are IABR registers.
	*/
	#define PTRACE_GET_DEBUGREG 25
	#define PTRACE_SET_DEBUGREG 26

	/* (new) PTRACE requests using the same numbers as x86 and the same
	* argument ordering. Additionally, they support more registers too
	*/
	#define PTRACE_GETREGS 12
	#define PTRACE_SETREGS 13
	#define PTRACE_GETFPREGS 14
	#define PTRACE_SETFPREGS 15
	#define PTRACE_GETREGS64 22
	#define PTRACE_SETREGS64 23

	/* (old) PTRACE requests with inverted arguments */
	#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 */

	/* Calls to trace a 64bit program from a 32bit program */
	#define PPC_PTRACE_PEEKTEXT_3264 0x95
	#define PPC_PTRACE_PEEKDATA_3264 0x94
	#define PPC_PTRACE_POKETEXT_3264 0x93
	#define PPC_PTRACE_POKEDATA_3264 0x92
	#define PPC_PTRACE_PEEKUSR_3264 0x91
	#define PPC_PTRACE_POKEUSR_3264 0x90

	#endif /* _ASM_POWERPC_PTRACE_H */