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https://sourceware.org/git/binutils-gdb.git
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865bad2602
There is currently a bug in the RISC-V CSR/FPU feature files. The CSRs containing the FPU status registers are mentioned in both the FPU feature file and the CSR feature file. My original thinking when adding the FPU feature file was that it made more sense to group the FPU status registers with the other FPU state. This opened up the possibility of debugging very simple (possibly simulator only) targets that had little more than CPU and FPU available for GDB to access. When I then added code to automatically generate the CSR XML file I forgot to filter out the FPU status CSRs, so these registers were mentioned twice. Now for GDB's default RISC-V target descriptions this doesn't actually matter. I did consider adding the CSRs to the default target description, but in the end I didn't bother. The reasoning again was simplicity; the default target description is only to be used when the target doesn't supply its own description, and NOT supplying the CSRs actually serves to encourage targets to supply an accurate description. Combine this with the fact that the CSRs change from revision to revision, sometimes in non-backward compatible ways, then having a "default" set of CSRs just feels like a path to confusion and complaints. However, having a broken CSR XML file in the GDB source tree has had one negative effect, QEMU has copied this file into its source tree, and is using this as its description that it passes to GDB. That is QEMU announces the FPU status registers twice, once in the FPU feature, and once in the CSR feature. This commit starts along the path back to sanity by deleting the default CSR XML files from within GDB. These files were not used in any way by current GDB, so there is absolutely no loss of functionality with this change. gdb/ChangeLog: * features/Makefile: Remove all references to the deleted files below. * features/riscv/32bit-csr.c: Deleted. * features/riscv/32bit-csr.xml: Deleted. * features/riscv/64bit-csr.c: Deleted. * features/riscv/64bit-csr.xml: Deleted. * features/riscv/rebuild-csr-xml.sh: Deleted.
273 lines
8.5 KiB
Makefile
273 lines
8.5 KiB
Makefile
# Copyright (C) 2007-2020 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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#
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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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#
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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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# This file requires GNU make!
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# This Makefile updates files in ../regformats from their XML master
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# copies. Because this relies on xsltproc, it is not normally run
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# during the build process; it should be run by hand when one of the
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# affected XML files is changed, and the results should be kept in the
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# GDB repository.
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# It can also update the C files in the features directory from their
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# XML master copies. This relies on a GDB linked with expat and that
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# is configured to include support for the architecture, so the files
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# are kept in the GDB repository.
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#
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# By default we'll generate all C files, and you must point make at a
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# GDB that has been configured with --enable-targets=all:
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#
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# make GDB=/path/to/gdb cfiles
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#
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# To regenerate all C files from scratch:
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#
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# make GDB=/path/to/gdb clean-cfiles cfiles
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#
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# To generate specific C files, you can override the XMLTOC and
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# FEATURE_XMLFILES make variables:
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#
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# make GDB=/path/to/gdb XMLTOC="xml files" FEATURE_XMLFILES="xml files" cfiles
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# List of .dat files to create in ../regformats/
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WHICH = mips-linux mips-dsp-linux \
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microblaze-with-stack-protect \
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mips64-linux mips64-dsp-linux \
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nios2-linux \
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rs6000/powerpc-32 \
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rs6000/powerpc-32l rs6000/powerpc-altivec32l rs6000/powerpc-e500l \
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rs6000/powerpc-64l rs6000/powerpc-altivec64l rs6000/powerpc-vsx32l \
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rs6000/powerpc-vsx64l \
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rs6000/powerpc-isa205-32l rs6000/powerpc-isa205-64l \
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rs6000/powerpc-isa205-altivec32l rs6000/powerpc-isa205-altivec64l \
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rs6000/powerpc-isa205-vsx32l rs6000/powerpc-isa205-vsx64l \
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rs6000/powerpc-isa205-ppr-dscr-vsx32l \
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rs6000/powerpc-isa205-ppr-dscr-vsx64l \
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rs6000/powerpc-isa207-vsx32l rs6000/powerpc-isa207-vsx64l \
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rs6000/powerpc-isa207-htm-vsx32l \
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rs6000/powerpc-isa207-htm-vsx64l \
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s390-linux32 s390-linux64 s390x-linux64 \
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s390-linux32v1 s390-linux64v1 s390x-linux64v1 \
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s390-linux32v2 s390-linux64v2 s390x-linux64v2 \
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s390-te-linux64 s390x-te-linux64 s390-vx-linux64 s390x-vx-linux64 \
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s390-tevx-linux64 s390x-tevx-linux64 \
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s390-gs-linux64 s390x-gs-linux64 \
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tic6x-c64xp-linux tic6x-c64x-linux tic6x-c62x-linux
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# Record which registers should be sent to GDB by default after stop.
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aarch64-expedite = x29,sp,pc
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arm-expedite = r11,sp,pc
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i386-expedite = ebp,esp,eip
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amd64-expedite = rbp,rsp,rip
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x32-expedite = rbp,rsp,rip
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mips-expedite = r29,pc
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mips-dsp-expedite = r29,pc
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mips64-expedite = r29,pc
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mips64-dsp-expedite = r29,pc
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microblaze-expedite = r1,rpc
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nios2-linux-expedite = sp,pc
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or1k-expedite = r1,npc
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powerpc-expedite = r1,pc
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s390-linux32-expedite = r14,r15,pswa
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s390-linux32v1-expedite = r14,r15,pswa
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s390-linux32v2-expedite = r14,r15,pswa
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s390-linux64-expedite = r14l,r15l,pswa
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s390-linux64v1-expedite = r14l,r15l,pswa
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s390-linux64v2-expedite = r14l,r15l,pswa
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s390-te-linux64-expedite = r14l,r15l,pswa
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s390-vx-linux64-expedite = r14l,r15l,pswa
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s390-tevx-linux64-expedite = r14l,r15l,pswa
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s390-gs-linux64-expedite = r14,r15,pswa
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s390x-expedite = r14,r15,pswa
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tic6x-expedite = A15,PC
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XSLTPROC = xsltproc
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outdir = ../regformats
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OUTPUTS = $(patsubst %,$(outdir)/%.dat,$(WHICH))
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# For targets without feature based target descriptions,
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# the set of xml files we'll generate .c files for GDB from. By
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# default we'll build all .c files, which requires an
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# --enable-targets=all GDB. You can override this by passing XMLTOC
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# to make on the command line.
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XMLTOC = \
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microblaze-with-stack-protect.xml \
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microblaze.xml \
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mips-dsp-linux.xml \
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mips-linux.xml \
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mips64-dsp-linux.xml \
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mips64-linux.xml \
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nds32.xml \
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nios2.xml \
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or1k.xml \
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rs6000/powerpc-32.xml \
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rs6000/powerpc-32l.xml \
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rs6000/powerpc-403.xml \
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rs6000/powerpc-403gc.xml \
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rs6000/powerpc-405.xml \
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rs6000/powerpc-505.xml \
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rs6000/powerpc-601.xml \
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rs6000/powerpc-602.xml \
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rs6000/powerpc-603.xml \
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rs6000/powerpc-604.xml \
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rs6000/powerpc-64.xml \
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rs6000/powerpc-64l.xml \
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rs6000/powerpc-7400.xml \
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rs6000/powerpc-750.xml \
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rs6000/powerpc-860.xml \
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rs6000/powerpc-altivec32.xml \
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rs6000/powerpc-altivec32l.xml \
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rs6000/powerpc-altivec64.xml \
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rs6000/powerpc-altivec64l.xml \
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rs6000/powerpc-e500.xml \
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rs6000/powerpc-e500l.xml \
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rs6000/powerpc-isa205-32l.xml \
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rs6000/powerpc-isa205-64l.xml \
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rs6000/powerpc-isa205-altivec32l.xml \
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rs6000/powerpc-isa205-altivec64l.xml \
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rs6000/powerpc-isa205-vsx32l.xml \
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rs6000/powerpc-isa205-vsx64l.xml \
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rs6000/powerpc-isa205-ppr-dscr-vsx32l.xml \
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rs6000/powerpc-isa205-ppr-dscr-vsx64l.xml \
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rs6000/powerpc-isa207-vsx32l.xml \
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rs6000/powerpc-isa207-vsx64l.xml \
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rs6000/powerpc-isa207-htm-vsx32l.xml \
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rs6000/powerpc-isa207-htm-vsx64l.xml \
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rs6000/powerpc-vsx32.xml \
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rs6000/powerpc-vsx32l.xml \
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rs6000/powerpc-vsx64.xml \
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rs6000/powerpc-vsx64l.xml \
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rs6000/rs6000.xml \
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s390-linux32.xml \
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s390-linux32v1.xml \
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s390-linux32v2.xml \
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s390-linux64.xml \
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s390-linux64v1.xml \
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s390-linux64v2.xml \
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s390-te-linux64.xml \
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s390x-linux64.xml \
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s390x-linux64v1.xml \
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s390x-linux64v2.xml \
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s390x-te-linux64.xml \
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s390-tevx-linux64.xml \
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s390-vx-linux64.xml \
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s390x-tevx-linux64.xml \
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s390x-vx-linux64.xml \
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s390-gs-linux64.xml \
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s390x-gs-linux64.xml
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TDESC_CFILES = $(patsubst %.xml,%.c,$(XMLTOC))
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GDB = false
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#Targets which use feature based target descriptions.
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aarch64-feature = 1
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arm-feature = 1
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i386-feature = 1
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riscv-feature = 1
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tic6x-feature = 1
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all: $(OUTPUTS)
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$(outdir)/%.dat: %.xml number-regs.xsl sort-regs.xsl gdbserver-regs.xsl
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echo "# THIS FILE IS GENERATED. -*- buffer-read-only: t -*- vi :set ro:" > $(outdir)/$*.tmp
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echo "# Generated from: $<" >> $(outdir)/$*.tmp
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echo "name:`echo $(notdir $*) | sed 's/-/_/g'`" >> $(outdir)/$*.tmp
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$(if $($(firstword $(subst /, ,$(subst -, ,$*)))-feature), echo "feature:1") >> $(outdir)/$*.tmp
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echo "xmltarget:$(<F)" >> $(outdir)/$*.tmp
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echo "expedite:$(if $($*-expedite),$($*-expedite),$($(firstword $(subst -, ,$(notdir $*)))-expedite))" \
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>> $(outdir)/$*.tmp
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$(XSLTPROC) --path "$(PWD)" --xinclude number-regs.xsl $< | \
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$(XSLTPROC) sort-regs.xsl - | \
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$(XSLTPROC) gdbserver-regs.xsl - >> $(outdir)/$*.tmp
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sh ../../move-if-change $(outdir)/$*.tmp $(outdir)/$*.dat
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# For targets with feature based target descriptions,
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# the set of xml files we'll generate .c files for GDB from.
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FEATURE_XMLFILES = aarch64-core.xml \
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aarch64-fpu.xml \
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aarch64-pauth.xml \
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arc/core-v2.xml \
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arc/aux-v2.xml \
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arc/core-arcompact.xml \
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arc/aux-arcompact.xml \
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arm/arm-core.xml \
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arm/arm-fpa.xml \
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arm/arm-m-profile.xml \
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arm/arm-m-profile-with-fpa.xml \
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arm/arm-vfpv2.xml \
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arm/arm-vfpv3.xml \
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arm/xscale-iwmmxt.xml \
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i386/32bit-core.xml \
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i386/32bit-sse.xml \
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i386/32bit-linux.xml \
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i386/32bit-avx.xml \
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i386/32bit-mpx.xml \
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i386/32bit-avx512.xml \
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i386/32bit-pkeys.xml \
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i386/64bit-avx512.xml \
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i386/64bit-core.xml \
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i386/64bit-mpx.xml \
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i386/64bit-segments.xml \
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i386/64bit-avx.xml \
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i386/64bit-linux.xml \
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i386/64bit-pkeys.xml \
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i386/64bit-sse.xml \
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i386/x32-core.xml \
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riscv/32bit-cpu.xml \
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riscv/32bit-fpu.xml \
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riscv/64bit-cpu.xml \
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riscv/64bit-fpu.xml \
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rx.xml \
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tic6x-c6xp.xml \
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tic6x-core.xml \
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tic6x-gp.xml
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FEATURE_CFILES = $(patsubst %.xml,%.c,$(FEATURE_XMLFILES))
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cfiles: $(TDESC_CFILES) $(FEATURE_CFILES)
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$(TDESC_CFILES): %.c: %.xml
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$(GDB) -nx -q -batch -ex 'maint print c-tdesc $<' > $@.tmp
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sh ../../move-if-change $@.tmp $@
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$(FEATURE_CFILES): %.c: %.xml.tmp
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$(GDB) -nx -q -batch \
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-ex 'maint print c-tdesc $<' > $@.tmp
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sh ../../move-if-change $@.tmp $@
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rm $<
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# %.xml is the XML file for each target description feature, and
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# %.xml.tmp is the XML file target description which only includes
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# one target description feature.
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%.xml.tmp: %.xml
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echo "<?xml version=\"1.0\"?>" > $@.tmp
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echo "<!DOCTYPE target SYSTEM \"gdb-target.dtd\">" >> $@.tmp
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echo "<target>" >> $@.tmp
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echo " <xi:include href=\"$(notdir $<)\"/>" >> $@.tmp
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echo "</target>" >> $@.tmp
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sh ../../move-if-change $@.tmp $@
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# 'all' doesn't build the C files, so don't delete them in 'clean'
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# either.
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clean-cfiles:
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rm -f $(TDESC_CFILES) $(FEATURE_CFILES)
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clean:
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rm -f $(OUTPUTS)
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