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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 / ppc64 / 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__
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struct pt_regs {
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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 ;
unsigned long softe ; /* Soft enabled/disabled */
unsigned long trap ; /* Reason for being here */
unsigned long dar ; /* Fault registers */
unsigned long dsisr ;
unsigned long result ; /* Result of a system call */
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} ;
struct pt_regs32 {
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unsigned int gpr [ 32 ] ;
unsigned int nip ;
unsigned int msr ;
unsigned int orig_gpr3 ; /* Used for restarting system calls */
unsigned int ctr ;
unsigned int link ;
unsigned int xer ;
unsigned int ccr ;
unsigned int mq ; /* 601 only (not used at present) */
unsigned int trap ; /* Reason for being here */
unsigned int dar ; /* Fault registers */
unsigned int dsisr ;
unsigned int result ; /* Result of a system call */
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} ;
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# ifdef __KERNEL__
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# define instruction_pointer(regs) ((regs)->nip)
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# ifdef CONFIG_SMP
extern unsigned long profile_pc ( struct pt_regs * regs ) ;
# else
# define profile_pc(regs) instruction_pointer(regs)
# endif
# define user_mode(regs) ((((regs)->msr) >> MSR_PR_LG) & 0x1)
# define force_successful_syscall_return() \
( current_thread_info ( ) - > syscall_noerror = 1 )
/*
* 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 .
*/
# define FULL_REGS(regs) (((regs)->trap & 1) == 0)
# define TRAP(regs) ((regs)->trap & ~0xF)
# define CHECK_FULL_REGS(regs) BUG_ON(regs->trap & 1)
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# endif /* __KERNEL__ */
# endif /* __ASSEMBLY__ */
# define STACK_FRAME_OVERHEAD 112 /* size of minimum stack frame */
/* Size of dummy stack frame allocated when calling signal handler. */
# define __SIGNAL_FRAMESIZE 128
# define __SIGNAL_FRAMESIZE32 64
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/*
* 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
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# define PT_TRAP 40
# define PT_DAR 41
# define PT_DSISR 42
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# define PT_RESULT 43
# define PT_FPR0 48
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/*
* Kernel and userspace will both use this PT_FPSCR value . 32 - bit apps will
* have visibility to the asm - ppc / ptrace . h header instead of this one .
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*/
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# define PT_FPSCR (PT_FPR0 + 32) /* each FP reg occupies 1 slot in 64-bit space */
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# ifdef __KERNEL__
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# define PT_FPSCR32 (PT_FPR0 + 2*32 + 1) /* each FP reg occupies 2 32-bit userspace slots */
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# 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
/*
* 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
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/*
* While we dont have 64 bit book E processors , we need to reserve the
* relevant ptrace calls for 32 bit compatibility .
*/
#if 0
# define PTRACE_GETEVRREGS 20
# define PTRACE_SETEVRREGS 21
# endif
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/*
* 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
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/* 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 */
/* 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
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# endif /* _PPC64_PTRACE_H */