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tcwg-buildslave pushed a change to branch linaro-local/ci/tcwg_kernel/llvm-master-arm-mainline-defconfig in repository toolchain/ci/binutils-gdb.
from e27c0d7ae3 Automatic date update in version.in adds 1b40d569a8 sim: cris: clean up printf & abort usage a bit adds 61e2dde2db gdb/python: handle saving user registers in a frame unwinder adds 8b9c48b287 gdb/python: move PyLong_From* calls into py-utils.c adds d52b800721 gdb/python: add PendingFrame.level and Frame.level methods adds 96f842cbdb gdb/riscv: add support for vector registers in target descriptions adds b4ee29a445 Automatic date update in version.in adds be0387eed0 sim: hw: rework configure option & device selection adds 456ef1c1d4 sim: unify hardware settings adds ded5cb9444 picojava assembler and disassembler fixes adds 46b8b3d6f8 opcodes: make use of __builtin_popcount when available adds 80dc83fd0e gdb/remote: handle target dying just before a stepi adds 50331d64f1 RISC-V: Clarify the addends of pc-relative access. adds e5b771060e [gdb/testsuite] Add gdb.dwarf2/imported-unit-c.exp adds 80d1206d7f gdb: Support DW_LLE_start_end adds 4e317a765b gdb/python: print name of unwinder that claimed frame in deb [...] adds ac0d67ed1d gdb: remove unnecessary parameter wait_ptid from do_target_wait adds 224506e95d gdb: fix python/lib/gdb/__init__.py formatting adds 36bb57e40c sim: drop configure scripts for simple ports adds e173c80fbb sim: rx: merge with common configure script adds c45cffdbe1 sim: callback: add a getpid interface adds cc40b4f2a3 sim: callback: generate signal map adds 13b0d6e5a2 sim: callback: add missing cb_target_to_host_signal adds 072d63a871 sim: cris: fix a few warnings adds 0b98ef1642 Automatic date update in version.in adds 2dd865d7c1 [gdb/testsuite] Rewrite gdb_test_lines adds b34084121a sim: switch common srcdir to abs_srcdir adds 02ddf7223d Automatic date update in version.in adds d394a6efed sim: callback: add a kill interface adds e91488f739 sim: cris: override getpid callback adds 2f631626f1 sim: syscall: handle killing the sim itself adds 1daf786ba3 gas: update csect alignment for PPC prefixed instructions on XCOFF adds 657dcee4cf [gdb/testsuite] Fix duplicate in gdb.base/argv0-symlink.exp adds 013270a16a [gdb/testsuite] Fix duplicate in gdb.base/info-macros.exp adds 22c6cfe9c8 Automatic date update in version.in adds bdedb2d21b sim: callback: extend syscall interface to handle 7 args adds a7cde6df40 sim: cris: fix a few missing prototype warnings adds 134df96436 Update the core file architecture if a target description is [...] adds 8a3df5acae Add non-wrapping mode to ada_decode adds 67470e9d8b Decode Ada types in Python layer adds 50a6759f0f Use gdb::function_view in addrmap_foreach adds 202054aea6 Add ISA 3.1 check to powerpc-plxv-norel.exp adds 81b327aadd gdb/guile: improve the errors when creating breakpoints adds 08080f9744 gdb/guile: allow for catchpoint type breakpoints in guile adds 6b95f5ad96 gdb/python: allow for catchpoint type breakpoints in python adds bf1dcdb391 Consolidate CU language setting adds 3e9f1ca148 Remove dwarf2_cu::language adds 3da4c6449b Change how .debug_aranges padding is skipped adds 79bd4d34f0 gdb: fix regression in evaluate_funcall for non C++ like cases adds 13221aec0d gdb: replace NULL terminated array with array_view adds 158cc4feb7 gdb: use gdb::optional instead of passing a pointer to gdb:: [...] adds d038ce48f1 gdb: fix invalid arg coercion when calling static member functions adds fc4d5ebf8f gdb: add new function quick_symbol_functions::has_unexpanded [...] adds 4a0788e08c gdb: make struct output_source_filename_data more C++ like adds 0e350a054b gdb/mi: add regexp filtering to -file-list-exec-source-files adds 1fb1ce02fc gdb/mi: add new --group-by-objfile flag for -file-list-exec- [...] adds bd742128ba gdb: change info sources to group results by objfile adds ac2d77c6a1 Automatic date update in version.in adds 0f8e203412 gdb: add context getter/setter to cmd_list_element adds d6ff04a343 gdb: add assert in cmd_list_element::set_context adds 4c0ba02a74 gdb: remove context parameter from add_setshow_enum_cmd adds 6a72dbb692 gdb/guile: use return values of add_setshow functions in add [...] adds f1fa7a3d88 Automatic date update in version.in adds d57b653328 sim: bfin: move pkg-config & SDL checks to common code adds 5d0b3088f7 sim: erc32: merge with common configure script adds cc9c19b030 sim: bpf: fix mixed decls & code warnings (and style) adds 44e88cd631 sim: bpf: add explicit casts when using explicit formats adds 5a4ce7aea0 sim: cgen: sync prototypes with implementation adds 694d6fdba1 sim: cgen: always leverage the ops prototypes adds 2d922d86ba sim: cgen: always leverage the mem prototypes adds ded82565c6 sim: cgen: constify trace strings adds a7ffa88dc6 sim: cgen: add printf attributes in a few more calls adds b69bd9e723 sim: cgen: add asserts to fix unused engine warnings adds 5db3a175cc sim: cgen: suppress trace non-literal printf warning adds 76f11310df sim: bpf: include more local headers & fix broken funcs adds e0fd25e485 sim: bpf/cris: include cgen-mem in decoders adds 9df51d7c47 Automatic date update in version.in
No new revisions were added by this update.
Summary of changes: bfd/ChangeLog | 17 + bfd/elfnn-riscv.c | 160 +- bfd/version.h | 2 +- gas/ChangeLog | 14 + gas/config/tc-pj.c | 5 +- gas/config/tc-ppc.c | 5 + gas/testsuite/gas/pj/ops.d | 284 +- gas/testsuite/gas/pj/ops.s | 34 +- gdb/ChangeLog | 358 ++ gdb/NEWS | 46 + gdb/ada-lang.c | 23 +- gdb/ada-lang.h | 7 +- gdb/addrmap.c | 34 +- gdb/addrmap.h | 18 +- gdb/arch/riscv.c | 6 + gdb/arch/riscv.h | 12 +- gdb/break-catch-sig.c | 3 +- gdb/break-catch-syscall.c | 3 +- gdb/break-catch-throw.c | 7 +- gdb/breakpoint.c | 19 +- gdb/cli/cli-decode.c | 22 +- gdb/cli/cli-decode.h | 16 +- gdb/cli/cli-dump.c | 6 +- gdb/cli/cli-style.c | 67 +- gdb/command.h | 8 +- gdb/corelow.c | 15 + gdb/doc/ChangeLog | 35 + gdb/doc/gdb.texinfo | 184 +- gdb/doc/guile.texi | 4 + gdb/doc/python.texi | 16 + gdb/dwarf2/cu.c | 2 +- gdb/dwarf2/cu.h | 1 - gdb/dwarf2/index-write.c | 41 +- gdb/dwarf2/loc.c | 20 +- gdb/dwarf2/read.c | 402 +- gdb/eval.c | 14 +- gdb/f-lang.c | 2 +- gdb/guile/scm-breakpoint.c | 19 +- gdb/guile/scm-cmd.c | 6 +- gdb/guile/scm-param.c | 158 +- gdb/guile/scm-value.c | 2 +- gdb/infcall.c | 4 +- gdb/infrun.c | 12 +- gdb/m2-lang.c | 4 +- gdb/mi/mi-cmd-file.c | 92 +- gdb/objfiles.h | 6 + gdb/opencl-lang.c | 2 +- gdb/psympriv.h | 2 + gdb/psymtab.c | 83 +- gdb/python/lib/gdb/__init__.py | 14 +- gdb/python/py-breakpoint.c | 6 +- gdb/python/py-cmd.c | 6 +- gdb/python/py-frame.c | 23 + gdb/python/py-inferior.c | 2 +- gdb/python/py-param.c | 8 +- gdb/python/py-type.c | 9 + gdb/python/py-unwind.c | 76 +- gdb/python/py-value.c | 2 +- gdb/quick-symbol.h | 6 + gdb/riscv-tdep.c | 121 +- gdb/riscv-tdep.h | 8 +- gdb/rust-lang.c | 18 +- gdb/symfile-debug.c | 25 + gdb/symtab.c | 364 +- gdb/symtab.h | 59 + gdb/target.c | 7 +- gdb/testsuite/ChangeLog | 123 + gdb/testsuite/gdb.ada/py_range.exp | 5 + gdb/testsuite/gdb.arch/powerpc-plxv-nonrel.exp | 4 +- gdb/testsuite/gdb.base/argv0-symlink.exp | 119 +- gdb/testsuite/gdb.base/info-macros.exp | 13 +- gdb/testsuite/gdb.base/info-types.exp.tcl | 22 +- .../testsuite/gdb.base/info_sources_2-header.h | 23 +- .../testsuite/gdb.base/info_sources_2-lib.c | 22 +- .../testsuite/gdb.base/info_sources_2-test.c | 23 +- gdb/testsuite/gdb.base/info_sources_2.exp | 169 + gdb/testsuite/gdb.cp/cplusfuncs.exp | 2 +- .../testsuite/gdb.cp/method-call-in-c.cc | 61 +- gdb/testsuite/gdb.cp/method-call-in-c.exp | 50 + gdb/testsuite/gdb.dwarf2/dw2-filename.exp | 2 +- gdb/testsuite/gdb.dwarf2/imported-unit-c.exp | 110 + ...oclists-multiple-cus.c => loclists-start-end.c} | 0 gdb/testsuite/gdb.dwarf2/loclists-start-end.exp | 137 + gdb/testsuite/gdb.guile/scm-breakpoint.exp | 44 + gdb/testsuite/gdb.mi/mi-file.exp | 2 +- .../testsuite/gdb.mi/mi-info-sources-base.c | 22 +- .../testsuite/gdb.mi/mi-info-sources.c | 24 +- gdb/testsuite/gdb.mi/mi-info-sources.exp | 184 + gdb/testsuite/gdb.python/py-breakpoint.c | 14 + gdb/testsuite/gdb.python/py-breakpoint.exp | 60 + gdb/testsuite/gdb.python/py-frame.exp | 11 + .../testsuite/gdb.python/py-pending-frame-level.c | 50 +- .../gdb.python/py-pending-frame-level.exp | 65 + gdb/testsuite/gdb.python/py-pending-frame-level.py | 55 + .../testsuite/gdb.python/py-unwind-user-regs.c | 38 +- gdb/testsuite/gdb.python/py-unwind-user-regs.exp | 98 + gdb/testsuite/gdb.python/py-unwind-user-regs.py | 72 + gdb/testsuite/gdb.rust/dwindex.exp | 43 + gdb/testsuite/gdb.rust/dwindex.rs | 22 + gdb/testsuite/gdb.server/server-kill.exp | 65 +- gdb/testsuite/lib/dwarf.exp | 29 + gdb/testsuite/lib/gdb.exp | 148 +- gdb/tui/tui-layout.c | 5 +- gdb/valarith.c | 2 +- gdb/valops.c | 57 +- gdb/value.h | 2 +- include/sim/ChangeLog | 13 + include/sim/callback.h | 4 +- ld/ChangeLog | 14 + ld/testsuite/ld-riscv-elf/ld-riscv-elf.exp | 3 + ld/testsuite/ld-riscv-elf/pcrel-lo-addend-3.ld | 13 + ld/testsuite/ld-riscv-elf/pcrel-lo-addend-3a.d | 18 + ld/testsuite/ld-riscv-elf/pcrel-lo-addend-3a.s | 21 + ld/testsuite/ld-riscv-elf/pcrel-lo-addend-3b.d | 4 + ld/testsuite/ld-riscv-elf/pcrel-lo-addend-3b.s | 13 + ld/testsuite/ld-riscv-elf/pcrel-lo-addend-3c.d | 4 + ld/testsuite/ld-riscv-elf/pcrel-lo-addend-3c.s | 13 + opcodes/ChangeLog | 10 + opcodes/cgen-dis.c | 4 + opcodes/pj-dis.c | 5 +- sim/ChangeLog | 54 + sim/Makefile.am | 2 +- sim/Makefile.in | 74 +- sim/README-HACKING | 4 +- sim/aarch64/ChangeLog | 15 + sim/aarch64/aclocal.m4 | 16 - sim/aarch64/configure | 2938 -------------- sim/aarch64/configure.ac | 25 - sim/aclocal.m4 | 2 + sim/arch-subdir.mk.in | 10 + sim/arm/ChangeLog | 15 + sim/arm/aclocal.m4 | 16 - sim/arm/configure | 2938 -------------- sim/arm/configure.ac | 5 - sim/avr/ChangeLog | 15 + sim/avr/aclocal.m4 | 16 - sim/avr/configure | 2938 -------------- sim/avr/configure.ac | 5 - sim/bfin/ChangeLog | 26 + sim/bfin/Makefile.in | 37 +- sim/bfin/aclocal.m4 | 2 - sim/bfin/configure | 1274 +----- sim/bfin/configure.ac | 43 - sim/bfin/interp.c | 8 +- sim/bpf/ChangeLog | 40 + sim/bpf/aclocal.m4 | 1 - sim/bpf/bpf-helpers.c | 29 +- sim/bpf/bpf-helpers.h | 4 +- sim/bpf/bpf.c | 15 +- sim/bpf/configure | 61 +- sim/bpf/decode-be.c | 2 + sim/bpf/decode-le.c | 2 + sim/bpf/mloop.in | 7 +- sim/bpf/sim-main.h | 1 + sim/common/ChangeLog | 103 + sim/common/Make-common.in | 29 +- sim/common/callback.c | 40 + sim/common/cgen-mem.h | 56 +- sim/common/cgen-ops.h | 95 +- sim/common/cgen-run.c | 5 +- sim/common/cgen-trace.c | 14 +- sim/common/cgen-trace.h | 8 +- sim/common/gentmap.c | 24 + sim/common/sim-syscall.c | 16 +- sim/common/syscall.c | 21 +- sim/configure | 998 ++++- sim/configure.ac | 84 +- sim/cr16/ChangeLog | 15 + sim/cr16/aclocal.m4 | 16 - sim/cr16/configure | 2938 -------------- sim/cr16/configure.ac | 5 - sim/cris/ChangeLog | 45 + sim/cris/Makefile.in | 2 + sim/cris/aclocal.m4 | 1 - sim/cris/configure | 61 +- sim/cris/configure.ac | 1 - sim/cris/cris-sim.h | 1 - sim/cris/decodev10.c | 1 + sim/cris/decodev32.c | 1 + sim/cris/sim-if.c | 5 +- sim/cris/traps.c | 119 +- sim/d10v/ChangeLog | 15 + sim/d10v/aclocal.m4 | 16 - sim/d10v/configure | 2938 -------------- sim/d10v/configure.ac | 5 - sim/erc32/ChangeLog | 18 + sim/erc32/Makefile.in | 4 - sim/erc32/aclocal.m4 | 16 - sim/erc32/configure | 4291 -------------------- sim/erc32/configure.ac | 47 - sim/example-synacor/ChangeLog | 15 + sim/example-synacor/aclocal.m4 | 16 - sim/example-synacor/configure | 2938 -------------- sim/example-synacor/configure.ac | 5 - sim/frv/ChangeLog | 13 + sim/frv/aclocal.m4 | 1 - sim/frv/configure | 61 +- sim/ft32/ChangeLog | 15 + sim/ft32/aclocal.m4 | 16 - sim/ft32/configure | 2938 -------------- sim/ft32/configure.ac | 5 - sim/h8300/ChangeLog | 15 + sim/h8300/aclocal.m4 | 16 - sim/h8300/configure | 2938 -------------- sim/h8300/configure.ac | 5 - sim/iq2000/ChangeLog | 13 + sim/iq2000/aclocal.m4 | 1 - sim/iq2000/configure | 61 +- sim/lm32/ChangeLog | 15 + sim/lm32/Makefile.in | 2 + sim/lm32/aclocal.m4 | 1 - sim/lm32/configure | 61 +- sim/lm32/configure.ac | 1 - sim/m32c/ChangeLog | 15 + sim/m32c/aclocal.m4 | 16 - sim/m32c/configure | 2938 -------------- sim/m32c/configure.ac | 24 - sim/m32r/ChangeLog | 19 + sim/m32r/Makefile.in | 2 + sim/m32r/aclocal.m4 | 1 - sim/m32r/configure | 62 +- sim/m32r/configure.ac | 2 - sim/m32r/traps-linux.c | 4 + sim/m4/sim_ac_option_hardware.m4 | 48 +- sim/m4/sim_ac_output.m4 | 11 +- sim/m4/sim_ac_platform.m4 | 37 + sim/m4/sim_ac_toolchain.m4 | 1 + sim/m68hc11/ChangeLog | 17 + sim/m68hc11/Makefile.in | 2 + sim/m68hc11/aclocal.m4 | 16 - sim/m68hc11/configure | 2940 -------------- sim/m68hc11/configure.ac | 9 - sim/mcore/ChangeLog | 15 + sim/mcore/aclocal.m4 | 16 - sim/mcore/configure | 2938 -------------- sim/mcore/configure.ac | 5 - sim/microblaze/ChangeLog | 15 + sim/microblaze/aclocal.m4 | 16 - sim/microblaze/configure | 2938 -------------- sim/microblaze/configure.ac | 5 - sim/mips/ChangeLog | 15 + sim/mips/Makefile.in | 1 + sim/mips/aclocal.m4 | 1 - sim/mips/configure | 64 +- sim/mips/configure.ac | 4 - sim/mn10300/ChangeLog | 15 + sim/mn10300/Makefile.in | 2 + sim/mn10300/aclocal.m4 | 1 - sim/mn10300/configure | 61 +- sim/mn10300/configure.ac | 1 - sim/moxie/ChangeLog | 15 + sim/moxie/aclocal.m4 | 16 - sim/moxie/configure | 2938 -------------- sim/moxie/configure.ac | 5 - sim/msp430/ChangeLog | 15 + sim/msp430/aclocal.m4 | 16 - sim/msp430/configure | 2938 -------------- sim/msp430/configure.ac | 24 - sim/or1k/ChangeLog | 13 + sim/or1k/aclocal.m4 | 1 - sim/or1k/configure | 61 +- sim/pru/ChangeLog | 15 + sim/pru/aclocal.m4 | 16 - sim/pru/configure | 2938 -------------- sim/pru/configure.ac | 24 - sim/riscv/ChangeLog | 13 + sim/riscv/aclocal.m4 | 1 - sim/riscv/configure | 61 +- sim/rl78/ChangeLog | 15 + sim/rl78/aclocal.m4 | 16 - sim/rl78/configure | 2938 -------------- sim/rl78/configure.ac | 24 - sim/rx/ChangeLog | 23 + sim/rx/Makefile.in | 2 +- sim/rx/{configure.ac => acinclude.m4} | 19 +- sim/rx/aclocal.m4 | 16 - sim/rx/configure | 2962 -------------- sim/sh/ChangeLog | 15 + sim/sh/aclocal.m4 | 16 - sim/sh/configure | 2938 -------------- sim/sh/configure.ac | 5 - sim/v850/ChangeLog | 13 + sim/v850/aclocal.m4 | 1 - sim/v850/configure | 61 +- 284 files changed, 6176 insertions(+), 61313 deletions(-) copy sim/bpf/bpf-helpers.h => gdb/testsuite/gdb.base/info_sources_2-header.h (62%) copy sim/bpf/bpf-helpers.h => gdb/testsuite/gdb.base/info_sources_2-lib.c (62%) copy sim/bpf/bpf-helpers.h => gdb/testsuite/gdb.base/info_sources_2-test.c (62%) create mode 100644 gdb/testsuite/gdb.base/info_sources_2.exp copy sim/bpf/sim-main.h => gdb/testsuite/gdb.cp/method-call-in-c.cc (50%) create mode 100644 gdb/testsuite/gdb.cp/method-call-in-c.exp create mode 100644 gdb/testsuite/gdb.dwarf2/imported-unit-c.exp copy gdb/testsuite/gdb.dwarf2/{loclists-multiple-cus.c => loclists-start-end.c} (100%) create mode 100644 gdb/testsuite/gdb.dwarf2/loclists-start-end.exp copy sim/bpf/bpf-helpers.h => gdb/testsuite/gdb.mi/mi-info-sources-base.c (62%) copy sim/bpf/bpf-helpers.h => gdb/testsuite/gdb.mi/mi-info-sources.c (62%) create mode 100644 gdb/testsuite/gdb.mi/mi-info-sources.exp copy sim/bpf/bpf-helpers.h => gdb/testsuite/gdb.python/py-pending-frame-level.c (60%) create mode 100644 gdb/testsuite/gdb.python/py-pending-frame-level.exp create mode 100644 gdb/testsuite/gdb.python/py-pending-frame-level.py copy sim/bpf/bpf-helpers.h => gdb/testsuite/gdb.python/py-unwind-user-regs.c (62%) create mode 100644 gdb/testsuite/gdb.python/py-unwind-user-regs.exp create mode 100644 gdb/testsuite/gdb.python/py-unwind-user-regs.py create mode 100644 gdb/testsuite/gdb.rust/dwindex.exp create mode 100644 gdb/testsuite/gdb.rust/dwindex.rs create mode 100644 ld/testsuite/ld-riscv-elf/pcrel-lo-addend-3.ld create mode 100644 ld/testsuite/ld-riscv-elf/pcrel-lo-addend-3a.d create mode 100644 ld/testsuite/ld-riscv-elf/pcrel-lo-addend-3a.s create mode 100644 ld/testsuite/ld-riscv-elf/pcrel-lo-addend-3b.d create mode 100644 ld/testsuite/ld-riscv-elf/pcrel-lo-addend-3b.s create mode 100644 ld/testsuite/ld-riscv-elf/pcrel-lo-addend-3c.d create mode 100644 ld/testsuite/ld-riscv-elf/pcrel-lo-addend-3c.s delete mode 100644 sim/aarch64/aclocal.m4 delete mode 100755 sim/aarch64/configure delete mode 100644 sim/aarch64/configure.ac delete mode 100644 sim/arm/aclocal.m4 delete mode 100755 sim/arm/configure delete mode 100644 sim/arm/configure.ac delete mode 100644 sim/avr/aclocal.m4 delete mode 100755 sim/avr/configure delete mode 100644 sim/avr/configure.ac delete mode 100644 sim/cr16/aclocal.m4 delete mode 100755 sim/cr16/configure delete mode 100644 sim/cr16/configure.ac delete mode 100644 sim/d10v/aclocal.m4 delete mode 100755 sim/d10v/configure delete mode 100644 sim/d10v/configure.ac delete mode 100644 sim/erc32/aclocal.m4 delete mode 100755 sim/erc32/configure delete mode 100644 sim/erc32/configure.ac delete mode 100644 sim/example-synacor/aclocal.m4 delete mode 100755 sim/example-synacor/configure delete mode 100644 sim/example-synacor/configure.ac delete mode 100644 sim/ft32/aclocal.m4 delete mode 100755 sim/ft32/configure delete mode 100644 sim/ft32/configure.ac delete mode 100644 sim/h8300/aclocal.m4 delete mode 100755 sim/h8300/configure delete mode 100644 sim/h8300/configure.ac delete mode 100644 sim/m32c/aclocal.m4 delete mode 100755 sim/m32c/configure delete mode 100644 sim/m32c/configure.ac delete mode 100644 sim/m68hc11/aclocal.m4 delete mode 100755 sim/m68hc11/configure delete mode 100644 sim/m68hc11/configure.ac delete mode 100644 sim/mcore/aclocal.m4 delete mode 100755 sim/mcore/configure delete mode 100644 sim/mcore/configure.ac delete mode 100644 sim/microblaze/aclocal.m4 delete mode 100755 sim/microblaze/configure delete mode 100644 sim/microblaze/configure.ac delete mode 100644 sim/moxie/aclocal.m4 delete mode 100755 sim/moxie/configure delete mode 100644 sim/moxie/configure.ac delete mode 100644 sim/msp430/aclocal.m4 delete mode 100755 sim/msp430/configure delete mode 100644 sim/msp430/configure.ac delete mode 100644 sim/pru/aclocal.m4 delete mode 100755 sim/pru/configure delete mode 100644 sim/pru/configure.ac delete mode 100644 sim/rl78/aclocal.m4 delete mode 100755 sim/rl78/configure delete mode 100644 sim/rl78/configure.ac rename sim/rx/{configure.ac => acinclude.m4} (74%) delete mode 100644 sim/rx/aclocal.m4 delete mode 100755 sim/rx/configure delete mode 100644 sim/sh/aclocal.m4 delete mode 100755 sim/sh/configure delete mode 100644 sim/sh/configure.ac