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/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
* 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 _ASM_POWERPC_PTRACE_H
#define _ASM_POWERPC_PTRACE_H
#include <linux/types.h>
#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__ */
/*
* 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_DSCR 44
#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 */
#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)
/*
* Only store first 32 VSRs here. The second 32 VSRs in VR0-31
*/
#define PT_VSR0 150 /* each VSR reg occupies 2 slots in 64-bit */
#define PT_VSR31 (PT_VSR0 + 2*31)
#endif /* __powerpc64__ */
/*
* Get/set all the altivec registers v0..v31, 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 0x12
#define PTRACE_SETVRREGS 0x13
/* Get/set all the upper 32-bits of the SPE registers, accumulator, and
* spefscr, in one go */
#define PTRACE_GETEVRREGS 0x14
#define PTRACE_SETEVRREGS 0x15
/* Get the first 32 128bit VSX registers */
#define PTRACE_GETVSRREGS 0x1b
#define PTRACE_SETVSRREGS 0x1c
/* Syscall emulation defines */
#define PTRACE_SYSEMU 0x1d
#define PTRACE_SYSEMU_SINGLESTEP 0x1e
/*
* Get or set a debug register. The first 16 are DABR registers and the
* second 16 are IABR registers.
*/
#define PTRACE_GET_DEBUGREG 0x19
#define PTRACE_SET_DEBUGREG 0x1a
/* (new) PTRACE requests using the same numbers as x86 and the same
* argument ordering. Additionally, they support more registers too
*/
#define PTRACE_GETREGS 0xc
#define PTRACE_SETREGS 0xd
#define PTRACE_GETFPREGS 0xe
#define PTRACE_SETFPREGS 0xf
#define PTRACE_GETREGS64 0x16
#define PTRACE_SETREGS64 0x17
/* 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
#define PTRACE_SINGLEBLOCK 0x100 /* resume execution until next branch */
#define PPC_PTRACE_GETHWDBGINFO 0x89
#define PPC_PTRACE_SETHWDEBUG 0x88
#define PPC_PTRACE_DELHWDEBUG 0x87
#ifndef __ASSEMBLY__
struct ppc_debug_info {
__u32 version; /* Only version 1 exists to date */
__u32 num_instruction_bps;
__u32 num_data_bps;
__u32 num_condition_regs;
__u32 data_bp_alignment;
__u32 sizeof_condition; /* size of the DVC register */
__u64 features;
};
#endif /* __ASSEMBLY__ */
/*
* features will have bits indication whether there is support for:
*/
#define PPC_DEBUG_FEATURE_INSN_BP_RANGE 0x0000000000000001
#define PPC_DEBUG_FEATURE_INSN_BP_MASK 0x0000000000000002
#define PPC_DEBUG_FEATURE_DATA_BP_RANGE 0x0000000000000004
#define PPC_DEBUG_FEATURE_DATA_BP_MASK 0x0000000000000008
#define PPC_DEBUG_FEATURE_DATA_BP_DAWR 0x0000000000000010
#ifndef __ASSEMBLY__
struct ppc_hw_breakpoint {
__u32 version; /* currently, version must be 1 */
__u32 trigger_type; /* only some combinations allowed */
__u32 addr_mode; /* address match mode */
__u32 condition_mode; /* break/watchpoint condition flags */
__u64 addr; /* break/watchpoint address */
__u64 addr2; /* range end or mask */
__u64 condition_value; /* contents of the DVC register */
};
#endif /* __ASSEMBLY__ */
/*
* Trigger Type
*/
#define PPC_BREAKPOINT_TRIGGER_EXECUTE 0x00000001
#define PPC_BREAKPOINT_TRIGGER_READ 0x00000002
#define PPC_BREAKPOINT_TRIGGER_WRITE 0x00000004
#define PPC_BREAKPOINT_TRIGGER_RW \
(PPC_BREAKPOINT_TRIGGER_READ | PPC_BREAKPOINT_TRIGGER_WRITE)
/*
* Address Mode
*/
#define PPC_BREAKPOINT_MODE_EXACT 0x00000000
#define PPC_BREAKPOINT_MODE_RANGE_INCLUSIVE 0x00000001
#define PPC_BREAKPOINT_MODE_RANGE_EXCLUSIVE 0x00000002
#define PPC_BREAKPOINT_MODE_MASK 0x00000003
/*
* Condition Mode
*/
#define PPC_BREAKPOINT_CONDITION_MODE 0x00000003
#define PPC_BREAKPOINT_CONDITION_NONE 0x00000000
#define PPC_BREAKPOINT_CONDITION_AND 0x00000001
#define PPC_BREAKPOINT_CONDITION_EXACT PPC_BREAKPOINT_CONDITION_AND
#define PPC_BREAKPOINT_CONDITION_OR 0x00000002
#define PPC_BREAKPOINT_CONDITION_AND_OR 0x00000003
#define PPC_BREAKPOINT_CONDITION_BE_ALL 0x00ff0000
#define PPC_BREAKPOINT_CONDITION_BE_SHIFT 16
#define PPC_BREAKPOINT_CONDITION_BE(n) \
(1<<((n)+PPC_BREAKPOINT_CONDITION_BE_SHIFT))
#endif /* _ASM_POWERPC_PTRACE_H */
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