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/*
* Copyright 2010 Tilera Corporation. All Rights Reserved.
*
* 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, version 2.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
* NON INFRINGEMENT. See the GNU General Public License for
* more details.
*/
#ifndef _UAPI_ASM_TILE_PTRACE_H
#define _UAPI_ASM_TILE_PTRACE_H
#include <arch/chip.h>
#include <arch/abi.h>
/* These must match struct pt_regs, below. */
#if CHIP_WORD_SIZE() == 32
#define PTREGS_OFFSET_REG(n) ((n)*4)
#else
#define PTREGS_OFFSET_REG(n) ((n)*8)
#endif
#define PTREGS_OFFSET_BASE 0
#define PTREGS_OFFSET_TP PTREGS_OFFSET_REG(53)
#define PTREGS_OFFSET_SP PTREGS_OFFSET_REG(54)
#define PTREGS_OFFSET_LR PTREGS_OFFSET_REG(55)
#define PTREGS_NR_GPRS 56
#define PTREGS_OFFSET_PC PTREGS_OFFSET_REG(56)
#define PTREGS_OFFSET_EX1 PTREGS_OFFSET_REG(57)
#define PTREGS_OFFSET_FAULTNUM PTREGS_OFFSET_REG(58)
#define PTREGS_OFFSET_ORIG_R0 PTREGS_OFFSET_REG(59)
#define PTREGS_OFFSET_FLAGS PTREGS_OFFSET_REG(60)
#if CHIP_HAS_CMPEXCH()
#define PTREGS_OFFSET_CMPEXCH PTREGS_OFFSET_REG(61)
#endif
#define PTREGS_SIZE PTREGS_OFFSET_REG(64)
#ifndef __ASSEMBLY__
#ifndef __KERNEL__
/* Provide appropriate length type to userspace regardless of -m32/-m64. */
typedef uint_reg_t pt_reg_t;
#endif
/*
* This struct defines the way the registers are stored on the stack during a
* system call or exception. "struct sigcontext" has the same shape.
*/
struct pt_regs {
/* Saved main processor registers; 56..63 are special. */
/* tp, sp, and lr must immediately follow regs[] for aliasing. */
pt_reg_t regs[53];
pt_reg_t tp; /* aliases regs[TREG_TP] */
pt_reg_t sp; /* aliases regs[TREG_SP] */
pt_reg_t lr; /* aliases regs[TREG_LR] */
/* Saved special registers. */
pt_reg_t pc; /* stored in EX_CONTEXT_K_0 */
pt_reg_t ex1; /* stored in EX_CONTEXT_K_1 (PL and ICS bit) */
pt_reg_t faultnum; /* fault number (INT_SWINT_1 for syscall) */
pt_reg_t orig_r0; /* r0 at syscall entry, else zero */
pt_reg_t flags; /* flags (see below) */
#if !CHIP_HAS_CMPEXCH()
pt_reg_t pad[3];
#else
pt_reg_t cmpexch; /* value of CMPEXCH_VALUE SPR at interrupt */
pt_reg_t pad[2];
#endif
};
#endif /* __ASSEMBLY__ */
#define PTRACE_GETREGS 12
#define PTRACE_SETREGS 13
#define PTRACE_GETFPREGS 14
#define PTRACE_SETFPREGS 15
/* Support TILE-specific ptrace options, with events starting at 16. */
#define PTRACE_EVENT_MIGRATE 16
#define PTRACE_O_TRACEMIGRATE (1 << PTRACE_EVENT_MIGRATE)
/*
* Flag bits in pt_regs.flags that are part of the ptrace API.
* We start our numbering higher up to avoid confusion with the
* non-ABI kernel-internal values that use the low 16 bits.
*/
#define PT_FLAGS_COMPAT 0x10000 /* process is an -m32 compat process */
#endif /* _UAPI_ASM_TILE_PTRACE_H */