Arm: Add read_description read funcs and use in GDB
Switch the Arm target to get target descriptions via arm_read_description and aarch32_read_description, in the same style as other feature targets. Add an enum to specify the different types - this will also be of use to gdbserver in a later patch. Under the hood return the same existing pre-feature target descriptions. gdb/ChangeLog: * Makefile.in: Add new files. * aarch32-tdep.c: New file. * aarch32-tdep.h: New file. * aarch64-linux-nat.c (aarch64_linux_nat_target::read_description): Call aarch32_read_description. * arch/aarch32.c: New file. * arch/aarch32.h: New file. * arch/arm.c (arm_create_target_description) (arm_create_mprofile_target_description): New function. * arch/arm.h (arm_fp_type, arm_m_profile_type): New enum. (arm_create_target_description) (arm_create_mprofile_target_description): New declaration. * arm-fbsd-tdep.c (arm_fbsd_read_description_auxv): Call read_description functions. * arm-linux-nat.c (arm_linux_nat_target::read_description): Likewise. * arm-linux-tdep.c (arm_linux_core_read_description): Likewise. * arm-tdep.c (tdesc_arm_list): New variable. (arm_register_g_packet_guesses): Call create description functions. (arm_read_description) (arm_read_mprofile_description): New function. * arm-tdep.h (arm_read_description) (arm_read_mprofile_description): Add declaration. * configure.tgt: Add new files.
This commit is contained in:
Alan Hayward
parent
231097b03a
commit
d105cce5dd
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@ -1,3 +1,30 @@
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2019-07-19 Alan Hayward <alan.hayward@arm.com>
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* Makefile.in: Add new files.
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* aarch32-tdep.c: New file.
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* aarch32-tdep.h: New file.
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* aarch64-linux-nat.c (aarch64_linux_nat_target::read_description):
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Call aarch32_read_description.
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* arch/aarch32.c: New file.
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* arch/aarch32.h: New file.
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* arch/arm.c (arm_create_target_description)
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(arm_create_mprofile_target_description): New function.
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* arch/arm.h (arm_fp_type, arm_m_profile_type): New enum.
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(arm_create_target_description)
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(arm_create_mprofile_target_description): New declaration.
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* arm-fbsd-tdep.c (arm_fbsd_read_description_auxv): Call
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read_description functions.
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* arm-linux-nat.c (arm_linux_nat_target::read_description):
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Likewise.
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* arm-linux-tdep.c (arm_linux_core_read_description): Likewise.
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* arm-tdep.c (tdesc_arm_list): New variable.
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(arm_register_g_packet_guesses): Call create description functions.
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(arm_read_description) (arm_read_mprofile_description): New
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function.
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* arm-tdep.h (arm_read_description)
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(arm_read_mprofile_description): Add declaration.
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* configure.tgt: Add new files.
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2019-07-18 Guillaume LABARTHE <guillaume.labarthe@gmail.com>
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* top.c (new_ui_command): Open specified terminal just once.
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@ -664,7 +664,9 @@ ALL_64_TARGET_OBS = \
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# All other target-dependent objects files (used with --enable-targets=all).
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ALL_TARGET_OBS = \
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aarch32-tdep.o \
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arc-tdep.o \
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arch/aarch32.o \
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arch/arm.o \
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arch/arm-get-next-pcs.o \
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arch/arm-linux.o \
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@ -1183,6 +1185,7 @@ SFILES = \
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# right, it is probably easiest just to list .h files here directly.
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HFILES_NO_SRCDIR = \
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aarch32-tdep.h \
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aarch64-ravenscar-thread.h \
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aarch64-tdep.h \
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ada-lang.h \
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@ -1428,6 +1431,7 @@ HFILES_NO_SRCDIR = \
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xml-syscall.h \
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xml-tdesc.h \
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xtensa-tdep.h \
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arch/aarch32.h \
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arch/aarch64.h \
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arch/aarch64-insn.h \
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arch/arm.h \
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@ -2132,6 +2136,7 @@ force_update:
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MAKEOVERRIDES =
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ALLDEPFILES = \
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aarch32-tdep.c \
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aarch64-fbsd-nat.c \
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aarch64-fbsd-tdep.c \
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aarch64-linux-nat.c \
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@ -0,0 +1,33 @@
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/* Copyright (C) 2019 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "gdbsupport/common-defs.h"
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#include "gdbsupport/common-regcache.h"
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#include "arch/aarch32.h"
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static struct target_desc *tdesc_aarch32;
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/* See aarch32-tdep.h. */
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const target_desc *
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aarch32_read_description ()
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{
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if (tdesc_aarch32 == nullptr)
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tdesc_aarch32 = aarch32_create_target_description ();
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return tdesc_aarch32;
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}
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@ -0,0 +1,25 @@
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/* Copyright (C) 2019 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef AARCH32_TDEP_H
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#define AARCH32_TDEP_H
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/* Get the AArch32 target description. */
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const target_desc *aarch32_read_description ();
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#endif /* aarch32-tdep.h. */
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@ -30,6 +30,7 @@
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#include "aarch64-tdep.h"
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#include "aarch64-linux-tdep.h"
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#include "aarch32-linux-nat.h"
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#include "aarch32-tdep.h"
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#include "arch/arm.h"
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#include "nat/aarch64-linux.h"
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#include "nat/aarch64-linux-hw-point.h"
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@ -631,8 +632,6 @@ aarch64_linux_nat_target::post_attach (int pid)
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linux_nat_target::post_attach (pid);
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}
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extern struct target_desc *tdesc_arm_with_neon;
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/* Implement the "read_description" target_ops method. */
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const struct target_desc *
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@ -649,7 +648,7 @@ aarch64_linux_nat_target::read_description ()
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ret = ptrace (PTRACE_GETREGSET, tid, NT_ARM_VFP, &iovec);
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if (ret == 0)
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return tdesc_arm_with_neon;
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return aarch32_read_description ();
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CORE_ADDR hwcap = linux_get_hwcap (this);
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@ -0,0 +1,29 @@
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/* Copyright (C) 2019 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "gdbsupport/common-defs.h"
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#include "aarch32.h"
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extern struct target_desc *tdesc_arm_with_neon;
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/* See aarch32.h. */
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target_desc *
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aarch32_create_target_description ()
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{
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return tdesc_arm_with_neon;
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}
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@ -0,0 +1,27 @@
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/* Copyright (C) 2019 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef ARCH_AARCH32_H
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#define ARCH_AARCH32_H
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#include "gdbsupport/tdesc.h"
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/* Create the AArch32 target description. */
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target_desc *aarch32_create_target_description ();
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#endif /* aarch32.h. */
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@ -21,6 +21,17 @@
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#include "gdbsupport/common-regcache.h"
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#include "arm.h"
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extern struct target_desc *tdesc_arm_with_vfpv2;
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extern struct target_desc *tdesc_arm_with_vfpv3;
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extern struct target_desc *tdesc_arm_with_iwmmxt;
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/* Temporary ifdef. Will be removed when target descriptions are switched. */
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#ifndef GDBSERVER
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extern struct target_desc *tdesc_arm_with_m;
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extern struct target_desc *tdesc_arm_with_m_vfp_d16;
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extern struct target_desc *tdesc_arm_with_m_fpa_layout;
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#endif
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/* See arm.h. */
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int
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@ -372,3 +383,52 @@ shifted_reg_val (struct regcache *regcache, unsigned long inst,
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return res & 0xffffffff;
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}
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/* See arch/arm.h. */
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target_desc *
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arm_create_target_description (arm_fp_type fp_type)
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{
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switch (fp_type)
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{
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case ARM_FP_TYPE_NONE:
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return nullptr;
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/* Temporary ifdef. Will be removed when target descriptions are switched. */
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#ifndef GDBSERVER
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case ARM_FP_TYPE_VFPV2:
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return tdesc_arm_with_vfpv2;
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case ARM_FP_TYPE_VFPV3:
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return tdesc_arm_with_vfpv3;
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case ARM_FP_TYPE_IWMMXT:
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return tdesc_arm_with_iwmmxt;
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#endif
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default:
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error (_("Invalid Arm FP type: %d"), fp_type);
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}
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}
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/* See arch/arm.h. */
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target_desc *
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arm_create_mprofile_target_description (arm_m_profile_type m_type)
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{
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switch (m_type)
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{
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/* Temporary ifdef. Will be removed when target descriptions are switched. */
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#ifndef GDBSERVER
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case ARM_M_TYPE_M_PROFILE:
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return tdesc_arm_with_m;
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case ARM_M_TYPE_VFP_D16:
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return tdesc_arm_with_m_fpa_layout;
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case ARM_M_TYPE_WITH_FPA:
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return tdesc_arm_with_m_vfp_d16;
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#endif
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default:
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error (_("Invalid Arm M type: %d"), m_type);
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}
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}
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@ -19,6 +19,8 @@
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#ifndef ARCH_ARM_H
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#define ARCH_ARM_H
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#include "gdbsupport/tdesc.h"
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/* Register numbers of various important registers. */
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enum gdb_regnum {
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@ -66,6 +68,23 @@ enum arm_breakpoint_kinds
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ARM_BP_KIND_ARM = 4,
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};
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/* Supported Arm FP hardware types. */
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enum arm_fp_type {
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ARM_FP_TYPE_NONE = 0,
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ARM_FP_TYPE_VFPV2,
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ARM_FP_TYPE_VFPV3,
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ARM_FP_TYPE_IWMMXT,
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ARM_FP_TYPE_INVALID
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};
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/* Supported M-profile Arm types. */
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enum arm_m_profile_type {
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ARM_M_TYPE_M_PROFILE,
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ARM_M_TYPE_VFP_D16,
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ARM_M_TYPE_WITH_FPA,
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ARM_M_TYPE_INVALID
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};
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/* Instruction condition field values. */
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#define INST_EQ 0x0
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#define INST_NE 0x1
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@ -165,4 +184,12 @@ unsigned long shifted_reg_val (struct regcache *regcache,
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unsigned long pc_val,
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unsigned long status_reg);
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/* Create an Arm target description with the given FP hardware type. */
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target_desc *arm_create_target_description (arm_fp_type fp_type);
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/* Create an Arm M-profile target description with the given hardware type. */
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target_desc *arm_create_mprofile_target_description (arm_m_profile_type m_type);
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#endif /* ARCH_ARM_H */
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@ -20,6 +20,8 @@
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#include "defs.h"
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#include "elf/common.h"
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#include "target-descriptions.h"
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#include "aarch32-tdep.h"
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#include "arm-tdep.h"
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#include "arm-fbsd-tdep.h"
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#include "auxv.h"
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@ -178,20 +180,20 @@ arm_fbsd_read_description_auxv (struct target_ops *target)
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CORE_ADDR arm_hwcap = 0;
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if (target_auxv_search (target, AT_FREEBSD_HWCAP, &arm_hwcap) != 1)
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return NULL;
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return nullptr;
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if (arm_hwcap & HWCAP_VFP)
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{
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if (arm_hwcap & HWCAP_NEON)
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return tdesc_arm_with_neon;
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return aarch32_read_description ();
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else if ((arm_hwcap & (HWCAP_VFPv3 | HWCAP_VFPD32))
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== (HWCAP_VFPv3 | HWCAP_VFPD32))
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return tdesc_arm_with_vfpv3;
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return arm_read_description (ARM_FP_TYPE_VFPV3);
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else
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return tdesc_arm_with_vfpv2;
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return arm_read_description (ARM_FP_TYPE_VFPV2);
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}
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return NULL;
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return nullptr;
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}
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/* Implement the "core_read_description" gdbarch method. */
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@ -27,6 +27,7 @@
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#include "observable.h"
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#include "gdbthread.h"
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#include "aarch32-tdep.h"
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#include "arm-tdep.h"
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#include "arm-linux-tdep.h"
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#include "aarch32-linux-nat.h"
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@ -551,7 +552,7 @@ arm_linux_nat_target::read_description ()
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}
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if (arm_hwcap & HWCAP_IWMMXT)
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return tdesc_arm_with_iwmmxt;
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return arm_read_description (ARM_FP_TYPE_IWMMXT);
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if (arm_hwcap & HWCAP_VFP)
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{
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@ -566,11 +567,11 @@ arm_linux_nat_target::read_description ()
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/* NEON implies VFPv3-D32 or no-VFP unit. Say that we only support
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Neon with VFPv3-D32. */
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if (arm_hwcap & HWCAP_NEON)
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return tdesc_arm_with_neon;
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return aarch32_read_description ();
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else if ((arm_hwcap & (HWCAP_VFPv3 | HWCAP_VFPv3D16)) == HWCAP_VFPv3)
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return tdesc_arm_with_vfpv3;
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else
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return tdesc_arm_with_vfpv2;
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return arm_read_description (ARM_FP_TYPE_VFPV3);
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return arm_read_description (ARM_FP_TYPE_VFPV2);
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}
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return this->beneath ()->read_description ();
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@ -33,6 +33,7 @@
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#include "auxv.h"
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#include "xml-syscall.h"
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#include "aarch32-tdep.h"
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#include "arch/arm.h"
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#include "arch/arm-get-next-pcs.h"
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#include "arch/arm-linux.h"
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@ -738,14 +739,14 @@ arm_linux_core_read_description (struct gdbarch *gdbarch,
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/* NEON implies VFPv3-D32 or no-VFP unit. Say that we only support
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Neon with VFPv3-D32. */
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if (arm_hwcap & HWCAP_NEON)
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return tdesc_arm_with_neon;
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return aarch32_read_description ();
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else if ((arm_hwcap & (HWCAP_VFPv3 | HWCAP_VFPv3D16)) == HWCAP_VFPv3)
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return tdesc_arm_with_vfpv3;
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else
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return tdesc_arm_with_vfpv2;
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return arm_read_description (ARM_FP_TYPE_VFPV3);
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return arm_read_description (ARM_FP_TYPE_VFPV2);
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}
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return NULL;
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return nullptr;
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}
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@ -240,6 +240,10 @@ static const char **valid_disassembly_styles;
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/* Disassembly style to use. Default to "std" register names. */
|
||||
static const char *disassembly_style;
|
||||
|
||||
/* All possible arm target descriptors. */
|
||||
static struct target_desc *tdesc_arm_list[ARM_FP_TYPE_INVALID];
|
||||
static struct target_desc *tdesc_arm_mprofile_list[ARM_M_TYPE_INVALID];
|
||||
|
||||
/* This is used to keep the bfd arch_info in sync with the disassembly
|
||||
style. */
|
||||
static void set_disassembly_style_sfunc (const char *, int,
|
||||
|
|
@ -8739,7 +8743,6 @@ arm_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
|
|||
return default_register_reggroup_p (gdbarch, regnum, group);
|
||||
}
|
||||
|
||||
|
||||
/* For backward-compatibility we allow two 'g' packet lengths with
|
||||
the remote protocol depending on whether FPA registers are
|
||||
supplied. M-profile targets do not have FPA registers, but some
|
||||
|
|
@ -8753,21 +8756,26 @@ arm_register_g_packet_guesses (struct gdbarch *gdbarch)
|
|||
{
|
||||
if (gdbarch_tdep (gdbarch)->is_m)
|
||||
{
|
||||
const target_desc *tdesc;
|
||||
|
||||
/* If we know from the executable this is an M-profile target,
|
||||
cater for remote targets whose register set layout is the
|
||||
same as the FPA layout. */
|
||||
tdesc = arm_read_mprofile_description (ARM_M_TYPE_WITH_FPA);
|
||||
register_remote_g_packet_guess (gdbarch,
|
||||
ARM_CORE_REGS_SIZE + ARM_FP_REGS_SIZE,
|
||||
tdesc_arm_with_m_fpa_layout);
|
||||
tdesc);
|
||||
|
||||
/* The regular M-profile layout. */
|
||||
tdesc = arm_read_mprofile_description (ARM_M_TYPE_M_PROFILE);
|
||||
register_remote_g_packet_guess (gdbarch, ARM_CORE_REGS_SIZE,
|
||||
tdesc_arm_with_m);
|
||||
tdesc);
|
||||
|
||||
/* M-profile plus M4F VFP. */
|
||||
tdesc = arm_read_mprofile_description (ARM_M_TYPE_VFP_D16);
|
||||
register_remote_g_packet_guess (gdbarch,
|
||||
ARM_CORE_REGS_SIZE + ARM_VFP2_REGS_SIZE,
|
||||
tdesc_arm_with_m_vfp_d16);
|
||||
tdesc);
|
||||
}
|
||||
|
||||
/* Otherwise we don't have a useful guess. */
|
||||
|
|
@ -13310,3 +13318,35 @@ arm_process_record (struct gdbarch *gdbarch, struct regcache *regcache,
|
|||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* See arm-tdep.h. */
|
||||
|
||||
const target_desc *
|
||||
arm_read_description (arm_fp_type fp_type)
|
||||
{
|
||||
struct target_desc *tdesc = tdesc_arm_list[fp_type];
|
||||
|
||||
if (tdesc == nullptr)
|
||||
{
|
||||
tdesc = arm_create_target_description (fp_type);
|
||||
tdesc_arm_list[fp_type] = tdesc;
|
||||
}
|
||||
|
||||
return tdesc;
|
||||
}
|
||||
|
||||
/* See arm-tdep.h. */
|
||||
|
||||
const target_desc *
|
||||
arm_read_mprofile_description (arm_m_profile_type m_type)
|
||||
{
|
||||
struct target_desc *tdesc = tdesc_arm_mprofile_list[m_type];
|
||||
|
||||
if (tdesc == nullptr)
|
||||
{
|
||||
tdesc = arm_create_mprofile_target_description (m_type);
|
||||
tdesc_arm_mprofile_list[m_type] = tdesc;
|
||||
}
|
||||
|
||||
return tdesc;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -281,11 +281,11 @@ extern void
|
|||
void *cb_data,
|
||||
const struct regcache *regcache);
|
||||
|
||||
/* Target descriptions. */
|
||||
extern struct target_desc *tdesc_arm_with_m;
|
||||
extern struct target_desc *tdesc_arm_with_iwmmxt;
|
||||
extern struct target_desc *tdesc_arm_with_vfpv2;
|
||||
extern struct target_desc *tdesc_arm_with_vfpv3;
|
||||
extern struct target_desc *tdesc_arm_with_neon;
|
||||
/* Get the correct Arm target description with given FP hardware type. */
|
||||
const target_desc *arm_read_description (arm_fp_type fp_type);
|
||||
|
||||
/* Get the correct Arm M-Profile target description with given hardware
|
||||
type. */
|
||||
const target_desc *arm_read_mprofile_description (arm_m_profile_type m_type);
|
||||
|
||||
#endif /* arm-tdep.h */
|
||||
|
|
|
|||
|
|
@ -48,8 +48,9 @@ amd64_tobjs="amd64-tdep.o arch/amd64.o ${x86_tobjs}"
|
|||
|
||||
case "${targ}" in
|
||||
aarch64*-*-*)
|
||||
cpu_obs="aarch64-tdep.o arch/aarch64-insn.o arch/aarch64.o \
|
||||
ravenscar-thread.o aarch64-ravenscar-thread.o";;
|
||||
cpu_obs="aarch32-tdep.o aarch64-tdep.o arch/aarch32.o \
|
||||
arch/aarch64-insn.o arch/aarch64.o ravenscar-thread.o \
|
||||
aarch64-ravenscar-thread.o";;
|
||||
|
||||
alpha*-*-*)
|
||||
# Target: Alpha
|
||||
|
|
@ -62,7 +63,8 @@ arc*-*-*)
|
|||
;;
|
||||
|
||||
arm*-*-*)
|
||||
cpu_obs="arch/arm.o arch/arm-get-next-pcs.o arm-tdep.o";;
|
||||
cpu_obs="aarch32-tdep.o arch/aarch32.o arch/arm.o \
|
||||
arch/arm-get-next-pcs.o arm-tdep.o";;
|
||||
|
||||
hppa*-*-*)
|
||||
# Target: HP PA-RISC
|
||||
|
|
|
|||
Loading…
Reference in New Issue