f2cf6173f3
This patch adds support for the Target Address Register for powerpc linux native and core file targets, and in the powerpc linux server stub. gdb/ChangeLog: 2018-10-26 Edjunior Barbosa Machado <emachado@linux.vnet.ibm.com> Pedro Franco de Carvalho <pedromfc@linux.ibm.com> * arch/ppc-linux-tdesc.h (tdesc_powerpc_isa207_vsx32l) (tdesc_powerpc_isa207_vsx64l): Declare. * arch/ppc-linux-common.h (PPC_LINUX_SIZEOF_TARREGSET): Define. (struct ppc_linux_features) <isa207>: New field. (ppc_linux_no_features): Add initializer for isa207 field. * arch/ppc-linux-common.c (ppc_linux_match_description): Return new tdescs. * nat/ppc-linux.h (PPC_FEATURE2_ARCH_2_07, PPC_FEATURE2_TAR) (NT_PPC_TAR): Define if not already defined. * features/Makefile (WHICH): Add rs6000/powerpc-isa207-vsx32l and rs6000/powerpc-isa207-vsx64l. (XMLTOC): Add rs6000/powerpc-isa207-vsx32l.xml and rs6000/powerpc-isa207-vsx64l.xml. * features/rs6000/power-tar.xml: New file. * features/rs6000/powerpc-isa207-vsx32l.xml: New file. * features/rs6000/powerpc-isa207-vsx64l.xml: New file. * features/rs6000/powerpc-isa207-vsx32l.c: Generate. * features/rs6000/powerpc-isa207-vsx64l.c: Generate. * regformats/rs6000/powerpc-isa207-vsx32l.dat: Generate. * regformats/rs6000/powerpc-isa207-vsx64l.dat: Generate. * ppc-linux-nat.c (fetch_register, fetch_ppc_registers): Call fetch_regset with the TAR regset. (store_register, store_ppc_registers): Call store_regset with the TAR regset. (ppc_linux_nat_target::read_description): Set isa207 field in the features struct if needed. * ppc-linux-tdep.c: Include features/rs6000/powerpc-isa207-vsx32l.c and features/rs6000/powerpc-isa207-vsx64l.c. (ppc32_regmap_tar, ppc32_linux_tarregset): New globals. (ppc_linux_iterate_over_regset_sections): Call back with the tar regset. (ppc_linux_core_read_description): Check if the tar section is present and set isa207 in the features struct. (_initialize_ppc_linux_tdep): Call initialize_tdesc_powerpc_isa207_vsx32l and initialize_tdesc_powerpc_isa207_vsx64l. * ppc-linux-tdep.h (ppc32_linux_tarregset): Declare. * ppc-tdep.h (gdbarch_tdep) <ppc_tar_regnum>: New field. (enum) <PPC_TAR_REGNUM>: New enum value. * rs6000-tdep.c (rs6000_gdbarch_init): Look for and validate tar feature. (ppc_process_record_op31): Record changes to TAR. gdb/gdbserver/ChangeLog: 2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com> * configure.srv (ipa_ppc_linux_regobj): Add powerpc-isa207-vsx64l-ipa.o and powerpc-isa207-vsx32l-ipa.o. (powerpc*-*-linux*): Add powerpc-isa207-vsx32l.o and powerpc-isa207-vsx64l.o to srv_regobj, add rs6000/power-tar.xml, rs6000/powerpc-isa207-vsx32l.xml, and rs6000/powerpc-isa207-vsx64l.xml to srv_xmlfiles. * linux-ppc-tdesc-init.h (enum ppc_linux_tdesc) <PPC_TDESC_ISA207_VSX>: New enum value. (init_registers_powerpc_isa207_vsx32l): Declare. (init_registers_powerpc_isa207_vsx64l): Declare. * linux-ppc-low.c (ppc_fill_tarregset): New function. (ppc_store_tarregset): New function. (ppc_regsets): Add entry for the TAR regset. (ppc_arch_setup): Set isa207 in features struct when needed. Set size for the TAR regsets. (ppc_get_ipa_tdesc_idx): Return PPC_TDESC_ISA207_VSX. (initialize_low_arch): Call init_registers_powerpc_isa207_vsx32l and init_registers_powerpc_isa207_vsx64l. * linux-ppc-ipa.c (get_ipa_tdesc): Handle PPC_TDESC_ISA207_VSX. (initialize_low_tracepoint): Call init_registers_powerpc_isa207_vsx32l and init_registers_powerpc_isa207_vsx64l. gdb/testsuite/ChangeLog: 2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com> * gdb.arch/powerpc-tar.c: New file. * gdb.arch/powerpc-tar.exp: New file. gdb/doc/ChangeLog: 2018-10-26 Pedro Franco de Carvalho <pedromfc@linux.ibm.com> * gdb.texinfo (PowerPC Features): Describe new feature "org.gnu.gdb.power.tar".
89 lines
2.9 KiB
C
89 lines
2.9 KiB
C
/* Common target dependent code for GNU/Linux on PPC systems.
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Copyright (C) 2018 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 "common-defs.h"
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#include "arch/ppc-linux-common.h"
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#include "arch/ppc-linux-tdesc.h"
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/* Decimal Floating Point bit in AT_HWCAP.
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This file can be used by a host with another architecture, e.g.
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when debugging core files, which might not provide this constant. */
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#ifndef PPC_FEATURE_HAS_DFP
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#define PPC_FEATURE_HAS_DFP 0x00000400
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#endif
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bool
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ppc_linux_has_isa205 (CORE_ADDR hwcap)
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{
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/* Power ISA 2.05 (implemented by Power 6 and newer processors)
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increases the FPSCR from 32 bits to 64 bits. Even though Power 7
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supports this ISA version, it doesn't have PPC_FEATURE_ARCH_2_05
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set, only PPC_FEATURE_ARCH_2_06. Since for now the only bits
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used in the higher half of the register are for Decimal Floating
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Point, we check if that feature is available to decide the size
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of the FPSCR. */
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return ((hwcap & PPC_FEATURE_HAS_DFP) != 0);
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}
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const struct target_desc *
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ppc_linux_match_description (struct ppc_linux_features features)
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{
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struct target_desc *tdesc = NULL;
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if (features.wordsize == 8)
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{
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if (features.cell)
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tdesc = tdesc_powerpc_cell64l;
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else if (features.vsx)
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tdesc = (features.isa207? tdesc_powerpc_isa207_vsx64l
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: features.ppr_dscr? tdesc_powerpc_isa205_ppr_dscr_vsx64l
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: features.isa205? tdesc_powerpc_isa205_vsx64l
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: tdesc_powerpc_vsx64l);
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else if (features.altivec)
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tdesc = (features.isa205? tdesc_powerpc_isa205_altivec64l
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: tdesc_powerpc_altivec64l);
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else
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tdesc = (features.isa205? tdesc_powerpc_isa205_64l
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: tdesc_powerpc_64l);
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}
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else
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{
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gdb_assert (features.wordsize == 4);
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if (features.cell)
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tdesc = tdesc_powerpc_cell32l;
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else if (features.vsx)
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tdesc = (features.isa207? tdesc_powerpc_isa207_vsx32l
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: features.ppr_dscr? tdesc_powerpc_isa205_ppr_dscr_vsx32l
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: features.isa205? tdesc_powerpc_isa205_vsx32l
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: tdesc_powerpc_vsx32l);
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else if (features.altivec)
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tdesc = (features.isa205? tdesc_powerpc_isa205_altivec32l
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: tdesc_powerpc_altivec32l);
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else
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tdesc = (features.isa205? tdesc_powerpc_isa205_32l
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: tdesc_powerpc_32l);
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}
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gdb_assert (tdesc != NULL);
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return tdesc;
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}
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