[deliverable/binutils-gdb.git] / gdb / aarch64-tdep.h

/* Common target dependent code for GDB on AArch64 systems.

   Copyright (C) 2009-2018 Free Software Foundation, Inc.
   Contributed by ARM Ltd.

   This file is part of GDB.

   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 3 of the License, or
   (at your option) any later version.

   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.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */


#ifndef AARCH64_TDEP_H
#define AARCH64_TDEP_H

#include "arch/aarch64.h"

/* Forward declarations.  */
struct gdbarch;
struct regset;

/* AArch64 Dwarf register numbering.  */
#define AARCH64_DWARF_X0   0
#define AARCH64_DWARF_SP  31
#define AARCH64_DWARF_V0  64
#define AARCH64_DWARF_SVE_VG   46
#define AARCH64_DWARF_SVE_FFR  47
#define AARCH64_DWARF_SVE_P0   48
#define AARCH64_DWARF_SVE_Z0   96

/* Size of integer registers.  */
#define X_REGISTER_SIZE  8
#define B_REGISTER_SIZE  1
#define H_REGISTER_SIZE  2
#define S_REGISTER_SIZE  4
#define D_REGISTER_SIZE  8
#define V_REGISTER_SIZE 16
#define Q_REGISTER_SIZE 16

/* Total number of general (X) registers.  */
#define AARCH64_X_REGISTER_COUNT 32
/* Total number of D registers.  */
#define AARCH64_D_REGISTER_COUNT 32

/* The maximum number of modified instructions generated for one
   single-stepped instruction.  */
#define DISPLACED_MODIFIED_INSNS 1

/* Target-dependent structure in gdbarch.  */
struct gdbarch_tdep
{
  /* Lowest address at which instructions will appear.  */
  CORE_ADDR lowest_pc;

  /* Offset to PC value in jump buffer.  If this is negative, longjmp
     support will be disabled.  */
  int jb_pc;

  /* And the size of each entry in the buf.  */
  size_t jb_elt_size;

  /* Types for AdvSISD registers.  */
  struct type *vnq_type;
  struct type *vnd_type;
  struct type *vns_type;
  struct type *vnh_type;
  struct type *vnb_type;
  struct type *vnv_type;

  /* syscall record.  */
  int (*aarch64_syscall_record) (struct regcache *regcache, unsigned long svc_number);

  /* The VQ value for SVE targets, or zero if SVE is not supported.  */
  uint64_t vq;

  /* Returns true if the target supports SVE.  */
  bool has_sve () const
  {
    return vq != 0;
  }
};

const target_desc *aarch64_read_description (uint64_t vq);

extern int aarch64_process_record (struct gdbarch *gdbarch,
                               struct regcache *regcache, CORE_ADDR addr);

struct displaced_step_closure *
  aarch64_displaced_step_copy_insn (struct gdbarch *gdbarch,
				    CORE_ADDR from, CORE_ADDR to,
				    struct regcache *regs);

void aarch64_displaced_step_fixup (struct gdbarch *gdbarch,
				   struct displaced_step_closure *dsc,
				   CORE_ADDR from, CORE_ADDR to,
				   struct regcache *regs);

int aarch64_displaced_step_hw_singlestep (struct gdbarch *gdbarch,
					  struct displaced_step_closure *closure);

#endif /* aarch64-tdep.h */
Commit	Line	Data
	1	/* Common target dependent code for GDB on AArch64 systems.
	2
	3	Copyright (C) 2009-2018 Free Software Foundation, Inc.
	4	Contributed by ARM Ltd.
	5
	6	This file is part of GDB.
	7
	8	This program is free software; you can redistribute it and/or modify
	9	it under the terms of the GNU General Public License as published by
	10	the Free Software Foundation; either version 3 of the License, or
	11	(at your option) any later version.
	12
	13	This program is distributed in the hope that it will be useful,
	14	but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	GNU General Public License for more details.
	17
	18	You should have received a copy of the GNU General Public License
	19	along with this program. If not, see <http://www.gnu.org/licenses/>. */
	20
	21
	22	#ifndef AARCH64_TDEP_H
	23	#define AARCH64_TDEP_H
	24
	25	#include "arch/aarch64.h"
	26
	27	/* Forward declarations. */
	28	struct gdbarch;
	29	struct regset;
	30
	31	/* AArch64 Dwarf register numbering. */
	32	#define AARCH64_DWARF_X0 0
	33	#define AARCH64_DWARF_SP 31
	34	#define AARCH64_DWARF_V0 64
	35	#define AARCH64_DWARF_SVE_VG 46
	36	#define AARCH64_DWARF_SVE_FFR 47
	37	#define AARCH64_DWARF_SVE_P0 48
	38	#define AARCH64_DWARF_SVE_Z0 96
	39
	40	/* Size of integer registers. */
	41	#define X_REGISTER_SIZE 8
	42	#define B_REGISTER_SIZE 1
	43	#define H_REGISTER_SIZE 2
	44	#define S_REGISTER_SIZE 4
	45	#define D_REGISTER_SIZE 8
	46	#define V_REGISTER_SIZE 16
	47	#define Q_REGISTER_SIZE 16
	48
	49	/* Total number of general (X) registers. */
	50	#define AARCH64_X_REGISTER_COUNT 32
	51	/* Total number of D registers. */
	52	#define AARCH64_D_REGISTER_COUNT 32
	53
	54	/* The maximum number of modified instructions generated for one
	55	single-stepped instruction. */
	56	#define DISPLACED_MODIFIED_INSNS 1
	57
	58	/* Target-dependent structure in gdbarch. */
	59	struct gdbarch_tdep
	60	{
	61	/* Lowest address at which instructions will appear. */
	62	CORE_ADDR lowest_pc;
	63
	64	/* Offset to PC value in jump buffer. If this is negative, longjmp
	65	support will be disabled. */
	66	int jb_pc;
	67
	68	/* And the size of each entry in the buf. */
	69	size_t jb_elt_size;
	70
	71	/* Types for AdvSISD registers. */
	72	struct type *vnq_type;
	73	struct type *vnd_type;
	74	struct type *vns_type;
	75	struct type *vnh_type;
	76	struct type *vnb_type;
	77	struct type *vnv_type;
	78
	79	/* syscall record. */
	80	int (aarch64_syscall_record) (struct regcache regcache, unsigned long svc_number);
	81
	82	/* The VQ value for SVE targets, or zero if SVE is not supported. */
	83	uint64_t vq;
	84
	85	/* Returns true if the target supports SVE. */
	86	bool has_sve () const
	87	{
	88	return vq != 0;
	89	}
	90	};
	91
	92	const target_desc *aarch64_read_description (uint64_t vq);
	93
	94	extern int aarch64_process_record (struct gdbarch *gdbarch,
	95	struct regcache *regcache, CORE_ADDR addr);
	96
	97	struct displaced_step_closure *
	98	aarch64_displaced_step_copy_insn (struct gdbarch *gdbarch,
	99	CORE_ADDR from, CORE_ADDR to,
	100	struct regcache *regs);
	101
	102	void aarch64_displaced_step_fixup (struct gdbarch *gdbarch,
	103	struct displaced_step_closure *dsc,
	104	CORE_ADDR from, CORE_ADDR to,
	105	struct regcache *regs);
	106
	107	int aarch64_displaced_step_hw_singlestep (struct gdbarch *gdbarch,
	108	struct displaced_step_closure *closure);
	109
	110	#endif /* aarch64-tdep.h */