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binutils-gdb/gdb/features/Makefile
Shahab Vahedi 995d3a197d arc: Add ARCv2 XML target along with refactoring 
A few changes have been made to make the register support simpler,
more flexible and extendible.  The trigger for most of these changes
are the remarks [1] made earlier for v2 of this patch.  The noticeable
improvements are:

- The arc XML target features are placed under gdb/features/arc
- There are two cores (based on ISA) and one auxiliary feature:
  v1-core: ARC600, ARC601, ARC700
  v2-core: ARC EM, ARC HS
  aux: common in both
- The XML target features represent a minimalistic sane set of
  registers irrespective of application (baremetal or linux).
- A concept of "feature" class has been introduced in the code.
  The "feature" object is constructed from BFD and GDBARCH data.
  It contains necessary information (ISA and register size) to
  determine which XML target feature to use.
- A new structure (ARC_REGISTER_FEATURE) is added that allows
  providing index, names, and the necessity of registers. This
  simplifies the sanity checks and future extendibility.
- Documnetation has been updated to reflect ARC features better.
- Although the feature names has changed, there still exists
  backward compatibility with older names through
  find_obsolete_[core,aux]_names() functions.

The last two points were inspired from RiscV port.

[1]
https://sourceware.org/pipermail/gdb-patches/2020-May/168511.html

gdb/ChangeLog:

	* arch/arc.h
	  (arc_gdbarch_features): New class to stir the selection of target XML.
	  (arc_create_target_description): Use FEATURES to choose XML target.
	  (arc_lookup_target_description): Use arc_create_target_description
	  to create _new_ target descriptions or return the already created
	  ones if the FEATURES is the same.
	* arch/arc.c: Implementation of prototypes described above.
	* gdb/arc-tdep.h (arc_regnum enum): Add more registers.
	  (arc_gdbarch_features_init): Initialize the FEATURES struct.
	* arc-tdep.c (*_feature_name): Make feature names consistent.
	  (arc_register_feature): A new struct to hold information about
	  registers of a particular target/feature.
	  (arc_check_tdesc_feature): Check if XML provides registers in
	  compliance with ARC_REGISTER_FEATURE structs.
	  (arc_update_acc_reg_names): Add aliases for r58 and r59.
	  (determine_*_reg_feature_set): Which feature name to look for.
	  (arc_gdbarch_features_init): Given MACH and ABFD, initialize FEATURES.
	  (mach_type_to_arc_isa): Convert from a set of binutils machine types
	  to expected ISA enums to be used in arc_gdbarch_features structs.
	* features/Makefile (FEATURE_XMLFILES): Add new files.
	* gdb/features/arc/v1-aux.c: New file.
	* gdb/features/arc/v1-aux.xml: Likewise.
	* gdb/features/arc/v1-core.c: Likewise.
	* gdb/features/arc/v1-core.xml: Likewise.
	* gdb/features/arc/v2-aux.c: Likewise.
	* gdb/features/arc/v2-aux.xml: Likewise.
	* gdb/features/arc/v2-core.c: Likewise.
	* gdb/features/arc/v2-core.xml: Likewise.
	* NEWS (Changes since GDB 9): Announce obsolence of old feature names.

gdb/doc/ChangeLog:

	* gdb.texinfo (Synopsys ARC): Update the documentation for ARC
	Features.

gdb/testsuite/ChangeLog:

	* gdb.arch/arc-tdesc-cpu.xml: Use new feature names.
2020-08-25 17:31:26 +02:00

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# Copyright (C) 2007-2020 Free Software Foundation, Inc.
# 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/>.
# This file requires GNU make!
# This Makefile updates files in ../regformats from their XML master
# copies. Because this relies on xsltproc, it is not normally run
# during the build process; it should be run by hand when one of the
# affected XML files is changed, and the results should be kept in the
# GDB repository.
# It can also update the C files in the features directory from their
# XML master copies. This relies on a GDB linked with expat and that
# is configured to include support for the architecture, so the files
# are kept in the GDB repository.
#
# By default we'll generate all C files, and you must point make at a
# GDB that has been configured with --enable-targets=all:
#
# make GDB=/path/to/gdb cfiles
#
# To regenerate all C files from scratch:
#
# make GDB=/path/to/gdb clean-cfiles cfiles
#
# To generate specific C files, you can override the XMLTOC and
# FEATURE_XMLFILES make variables:
#
# make GDB=/path/to/gdb XMLTOC="xml files" FEATURE_XMLFILES="xml files" cfiles
# List of .dat files to create in ../regformats/
WHICH = mips-linux mips-dsp-linux \
microblaze-with-stack-protect \
mips64-linux mips64-dsp-linux \
nios2-linux \
rs6000/powerpc-32 \
rs6000/powerpc-32l rs6000/powerpc-altivec32l rs6000/powerpc-e500l \
rs6000/powerpc-64l rs6000/powerpc-altivec64l rs6000/powerpc-vsx32l \
rs6000/powerpc-vsx64l \
rs6000/powerpc-isa205-32l rs6000/powerpc-isa205-64l \
rs6000/powerpc-isa205-altivec32l rs6000/powerpc-isa205-altivec64l \
rs6000/powerpc-isa205-vsx32l rs6000/powerpc-isa205-vsx64l \
rs6000/powerpc-isa205-ppr-dscr-vsx32l \
rs6000/powerpc-isa205-ppr-dscr-vsx64l \
rs6000/powerpc-isa207-vsx32l rs6000/powerpc-isa207-vsx64l \
rs6000/powerpc-isa207-htm-vsx32l \
rs6000/powerpc-isa207-htm-vsx64l \
s390-linux32 s390-linux64 s390x-linux64 \
s390-linux32v1 s390-linux64v1 s390x-linux64v1 \
s390-linux32v2 s390-linux64v2 s390x-linux64v2 \
s390-te-linux64 s390x-te-linux64 s390-vx-linux64 s390x-vx-linux64 \
s390-tevx-linux64 s390x-tevx-linux64 \
s390-gs-linux64 s390x-gs-linux64 \
tic6x-c64xp-linux tic6x-c64x-linux tic6x-c62x-linux
# Record which registers should be sent to GDB by default after stop.
aarch64-expedite = x29,sp,pc
arm-expedite = r11,sp,pc
i386-expedite = ebp,esp,eip
amd64-expedite = rbp,rsp,rip
x32-expedite = rbp,rsp,rip
mips-expedite = r29,pc
mips-dsp-expedite = r29,pc
mips64-expedite = r29,pc
mips64-dsp-expedite = r29,pc
microblaze-expedite = r1,rpc
nios2-linux-expedite = sp,pc
or1k-expedite = r1,npc
powerpc-expedite = r1,pc
s390-linux32-expedite = r14,r15,pswa
s390-linux32v1-expedite = r14,r15,pswa
s390-linux32v2-expedite = r14,r15,pswa
s390-linux64-expedite = r14l,r15l,pswa
s390-linux64v1-expedite = r14l,r15l,pswa
s390-linux64v2-expedite = r14l,r15l,pswa
s390-te-linux64-expedite = r14l,r15l,pswa
s390-vx-linux64-expedite = r14l,r15l,pswa
s390-tevx-linux64-expedite = r14l,r15l,pswa
s390-gs-linux64-expedite = r14,r15,pswa
s390x-expedite = r14,r15,pswa
tic6x-expedite = A15,PC
XSLTPROC = xsltproc
outdir = ../regformats
OUTPUTS = $(patsubst %,$(outdir)/%.dat,$(WHICH))
# For targets without feature based target descriptions,
# the set of xml files we'll generate .c files for GDB from. By
# default we'll build all .c files, which requires an
# --enable-targets=all GDB. You can override this by passing XMLTOC
# to make on the command line.
XMLTOC = \
microblaze-with-stack-protect.xml \
microblaze.xml \
mips-dsp-linux.xml \
mips-linux.xml \
mips64-dsp-linux.xml \
mips64-linux.xml \
nds32.xml \
nios2.xml \
or1k.xml \
rs6000/powerpc-32.xml \
rs6000/powerpc-32l.xml \
rs6000/powerpc-403.xml \
rs6000/powerpc-403gc.xml \
rs6000/powerpc-405.xml \
rs6000/powerpc-505.xml \
rs6000/powerpc-601.xml \
rs6000/powerpc-602.xml \
rs6000/powerpc-603.xml \
rs6000/powerpc-604.xml \
rs6000/powerpc-64.xml \
rs6000/powerpc-64l.xml \
rs6000/powerpc-7400.xml \
rs6000/powerpc-750.xml \
rs6000/powerpc-860.xml \
rs6000/powerpc-altivec32.xml \
rs6000/powerpc-altivec32l.xml \
rs6000/powerpc-altivec64.xml \
rs6000/powerpc-altivec64l.xml \
rs6000/powerpc-e500.xml \
rs6000/powerpc-e500l.xml \
rs6000/powerpc-isa205-32l.xml \
rs6000/powerpc-isa205-64l.xml \
rs6000/powerpc-isa205-altivec32l.xml \
rs6000/powerpc-isa205-altivec64l.xml \
rs6000/powerpc-isa205-vsx32l.xml \
rs6000/powerpc-isa205-vsx64l.xml \
rs6000/powerpc-isa205-ppr-dscr-vsx32l.xml \
rs6000/powerpc-isa205-ppr-dscr-vsx64l.xml \
rs6000/powerpc-isa207-vsx32l.xml \
rs6000/powerpc-isa207-vsx64l.xml \
rs6000/powerpc-isa207-htm-vsx32l.xml \
rs6000/powerpc-isa207-htm-vsx64l.xml \
rs6000/powerpc-vsx32.xml \
rs6000/powerpc-vsx32l.xml \
rs6000/powerpc-vsx64.xml \
rs6000/powerpc-vsx64l.xml \
rs6000/rs6000.xml \
s390-linux32.xml \
s390-linux32v1.xml \
s390-linux32v2.xml \
s390-linux64.xml \
s390-linux64v1.xml \
s390-linux64v2.xml \
s390-te-linux64.xml \
s390x-linux64.xml \
s390x-linux64v1.xml \
s390x-linux64v2.xml \
s390x-te-linux64.xml \
s390-tevx-linux64.xml \
s390-vx-linux64.xml \
s390x-tevx-linux64.xml \
s390x-vx-linux64.xml \
s390-gs-linux64.xml \
s390x-gs-linux64.xml
TDESC_CFILES = $(patsubst %.xml,%.c,$(XMLTOC))
GDB = false
#Targets which use feature based target descriptions.
aarch64-feature = 1
arm-feature = 1
i386-feature = 1
riscv-feature = 1
tic6x-feature = 1
all: $(OUTPUTS)
$(outdir)/%.dat: %.xml number-regs.xsl sort-regs.xsl gdbserver-regs.xsl
echo "# THIS FILE IS GENERATED. -*- buffer-read-only: t -*- vi :set ro:" > $(outdir)/$*.tmp
echo "# Generated from: $<" >> $(outdir)/$*.tmp
echo "name:`echo $(notdir $*) | sed 's/-/_/g'`" >> $(outdir)/$*.tmp
$(if $($(firstword $(subst /, ,$(subst -, ,$*)))-feature), echo "feature:1") >> $(outdir)/$*.tmp
echo "xmltarget:$(<F)" >> $(outdir)/$*.tmp
echo "expedite:$(if $($*-expedite),$($*-expedite),$($(firstword $(subst -, ,$(notdir $*)))-expedite))" \
>> $(outdir)/$*.tmp
$(XSLTPROC) --path "$(PWD)" --xinclude number-regs.xsl $< | \
$(XSLTPROC) sort-regs.xsl - | \
$(XSLTPROC) gdbserver-regs.xsl - >> $(outdir)/$*.tmp
sh ../../move-if-change $(outdir)/$*.tmp $(outdir)/$*.dat
# For targets with feature based target descriptions,
# the set of xml files we'll generate .c files for GDB from.
FEATURE_XMLFILES = aarch64-core.xml \
aarch64-fpu.xml \
aarch64-pauth.xml \
arc/v1-core.xml \
arc/v1-aux.xml \
arc/v2-core.xml \
arc/v2-aux.xml \
arm/arm-core.xml \
arm/arm-fpa.xml \
arm/arm-m-profile.xml \
arm/arm-m-profile-with-fpa.xml \
arm/arm-vfpv2.xml \
arm/arm-vfpv3.xml \
arm/xscale-iwmmxt.xml \
i386/32bit-core.xml \
i386/32bit-sse.xml \
i386/32bit-linux.xml \
i386/32bit-avx.xml \
i386/32bit-mpx.xml \
i386/32bit-avx512.xml \
i386/32bit-pkeys.xml \
i386/64bit-avx512.xml \
i386/64bit-core.xml \
i386/64bit-mpx.xml \
i386/64bit-segments.xml \
i386/64bit-avx.xml \
i386/64bit-linux.xml \
i386/64bit-pkeys.xml \
i386/64bit-sse.xml \
i386/x32-core.xml \
riscv/32bit-cpu.xml \
riscv/32bit-fpu.xml \
riscv/64bit-cpu.xml \
riscv/64bit-fpu.xml \
rx.xml \
tic6x-c6xp.xml \
tic6x-core.xml \
tic6x-gp.xml
FEATURE_CFILES = $(patsubst %.xml,%.c,$(FEATURE_XMLFILES))
cfiles: $(TDESC_CFILES) $(FEATURE_CFILES)
$(TDESC_CFILES): %.c: %.xml
$(GDB) -nx -q -batch -ex 'maint print c-tdesc $<' > $@.tmp
sh ../../move-if-change $@.tmp $@
$(FEATURE_CFILES): %.c: %.xml.tmp
$(GDB) -nx -q -batch \
-ex 'maint print c-tdesc $<' > $@.tmp
sh ../../move-if-change $@.tmp $@
rm $<
# %.xml is the XML file for each target description feature, and
# %.xml.tmp is the XML file target description which only includes
# one target description feature.
%.xml.tmp: %.xml
echo "<?xml version=\"1.0\"?>" > $@.tmp
echo "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">" >> $@.tmp
echo "<target>" >> $@.tmp
echo " <xi:include href=\"$(notdir $<)\"/>" >> $@.tmp
echo "</target>" >> $@.tmp
sh ../../move-if-change $@.tmp $@
# 'all' doesn't build the C files, so don't delete them in 'clean'
# either.
clean-cfiles:
rm -f $(TDESC_CFILES) $(FEATURE_CFILES)
clean:
rm -f $(OUTPUTS)
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