Merge remote-tracking branch 'remotes/stsquad/tags/pull-for-6.2-041121-2' into staging

Testing, gdbstub and plugin updates for 6.2

 - add microblaze and nios2 compiler docker images
 - fix test cross compiler detection for some targets
 - don't try and link ebf to user targets
 - add L2 tracking to cache plugin
 - exit cleanly on C-a x
 - clean up debug output in check-tcg
 - switch to thread on break in gdbstub
 - update openbsd VM to 7.0

# gpg: Signature made Thu 04 Nov 2021 08:14:35 AM EDT
# gpg:                using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]

* remotes/stsquad/tags/pull-for-6.2-041121-2:
  tests/vm/openbsd: Update to release 7.0
  tests/tcg: remove debug polluting make output
  gdbstub: Switch to the thread receiving a signal
  tests/tcg: remove duplicate EXTRA_RUNS
  plugins: try and make plugin_insn_append more ergonomic
  tests/plugins: extend the insn plugin to track opcode sizes
  chardev: don't exit() straight away on C-a x
  docs/tcg-plugins: add L2 arguments to cache docs
  plugins/cache: make L2 emulation optional through args
  plugins/cache: split command line arguments into name and value
  plugins/cache: implement unified L2 cache emulation
  plugins/cache: freed heap-allocated mutexes
  ebpf: really include it only in system emulators
  tests/tcg: enable debian-nios2-cross for test building
  tests/docker: split PARTIAL into PARTIAL and VIRTUAL images
  tests/tcg: Fix some targets default cross compiler path
  tests/tcg: Enable container_cross_cc for microblaze
  tests/docker: Add debian-microblaze-cross image
  tests/docker: Add debian-nios2-cross image

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

11 files changed, 390 insertions, 20 deletions

diff --git a/tests/docker/Makefile.include b/tests/docker/Makefile.include
index b9d4094c2e..7a63a3b7f7 100644
--- a/tests/docker/Makefile.include
+++ b/tests/docker/Makefile.include
@@ -11,8 +11,10 @@ HOST_ARCH = $(if $(ARCH),$(ARCH),$(shell uname -m))
 DOCKER_SUFFIX := .docker
 DOCKER_FILES_DIR := $(SRC_PATH)/tests/docker/dockerfiles
 # we don't run tests on intermediate images (used as base by another image)
-DOCKER_PARTIAL_IMAGES := debian10 debian11 debian-bootstrap empty
-DOCKER_IMAGES := $(sort $(notdir $(basename $(wildcard $(DOCKER_FILES_DIR)/*.docker))))
+DOCKER_PARTIAL_IMAGES := debian10 debian11
+# we don't directly build virtual images (they are used to build other images)
+DOCKER_VIRTUAL_IMAGES := debian-bootstrap debian-toolchain empty
+DOCKER_IMAGES := $(sort $(filter-out $(DOCKER_VIRTUAL_IMAGES), $(notdir $(basename $(wildcard $(DOCKER_FILES_DIR)/*.docker)))))
 DOCKER_TARGETS := $(patsubst %,docker-image-%,$(DOCKER_IMAGES))
 # Use a global constant ccache directory to speed up repetitive builds
 DOCKER_CCACHE_DIR := $$HOME/.cache/qemu-docker-ccache
@@ -171,10 +173,39 @@ docker-image-debian-hexagon-cross: $(DOCKER_FILES_DIR)/debian-hexagon-cross.dock
 				qemu/debian-hexagon-cross --add-current-user,		\
 			"PREPARE", "debian-hexagon-cross"))
 
+debian-toolchain-run = \
+	$(if $(NOCACHE), 						\
+		$(call quiet-command,					\
+			$(DOCKER_SCRIPT) build -t qemu/$1 -f $< 	\
+			$(if $V,,--quiet) --no-cache 			\
+			--registry $(DOCKER_REGISTRY) --extra-files	\
+			$(DOCKER_FILES_DIR)/$1.d/build-toolchain.sh,	\
+			"BUILD", $1),				        \
+		$(call quiet-command,					\
+			$(DOCKER_SCRIPT) fetch $(if $V,,--quiet)	\
+				qemu/$1 $(DOCKER_REGISTRY),		\
+			"FETCH", $1)					\
+		$(call quiet-command,					\
+			$(DOCKER_SCRIPT) update $(if $V,,--quiet) 	\
+				qemu/$1 				\
+				$(if $(NOUSER),,--add-current-user) 	\
+			"PREPARE", $1))
+debian-toolchain = $(call debian-toolchain-run,$(patsubst docker-image-%,%,$1))
+
+docker-image-debian-microblaze-cross: $(DOCKER_FILES_DIR)/debian-toolchain.docker \
+    $(DOCKER_FILES_DIR)/debian-microblaze-cross.d/build-toolchain.sh
+	$(call debian-toolchain, $@)
+
+docker-image-debian-nios2-cross: $(DOCKER_FILES_DIR)/debian-toolchain.docker \
+    $(DOCKER_FILES_DIR)/debian-nios2-cross.d/build-toolchain.sh
+	$(call debian-toolchain, $@)
+
 # Specialist build images, sometimes very limited tools
 docker-image-debian-tricore-cross: docker-image-debian10
 docker-image-debian-all-test-cross: docker-image-debian10
 docker-image-debian-arm64-test-cross: docker-image-debian11
+docker-image-debian-microblaze-cross: docker-image-debian10
+docker-image-debian-nios2-cross: docker-image-debian10
 docker-image-debian-powerpc-test-cross: docker-image-debian11
 
 # These images may be good enough for building tests but not for test builds
@@ -183,6 +214,8 @@ DOCKER_PARTIAL_IMAGES += debian-arm64-test-cross
 DOCKER_PARTIAL_IMAGES += debian-powerpc-test-cross
 DOCKER_PARTIAL_IMAGES += debian-hppa-cross
 DOCKER_PARTIAL_IMAGES += debian-m68k-cross debian-mips64-cross
+DOCKER_PARTIAL_IMAGES += debian-microblaze-cross
+DOCKER_PARTIAL_IMAGES += debian-nios2-cross
 DOCKER_PARTIAL_IMAGES += debian-sh4-cross debian-sparc64-cross
 DOCKER_PARTIAL_IMAGES += debian-tricore-cross
 DOCKER_PARTIAL_IMAGES += debian-xtensa-cross
@@ -195,7 +228,7 @@ DOCKER_PARTIAL_IMAGES += fedora-cris-cross
 # packages.
 
 # Expand all the pre-requistes for each docker image and test combination
-$(foreach i,$(filter-out $(DOCKER_PARTIAL_IMAGES),$(DOCKER_IMAGES)), \
+$(foreach i,$(filter-out $(DOCKER_PARTIAL_IMAGES) $(DOCKER_VIRTUAL_IMAGES),$(DOCKER_IMAGES)), \
 	$(foreach t,$(DOCKER_TESTS), \
 		$(eval .PHONY: docker-$t@$i) \
 		$(eval docker-$t@$i: docker-image-$i docker-run-$t@$i) \
diff --git a/tests/docker/dockerfiles/debian-microblaze-cross.d/build-toolchain.sh b/tests/docker/dockerfiles/debian-microblaze-cross.d/build-toolchain.sh
new file mode 100755
index 0000000000..23ec0aa9a7
--- /dev/null
+++ b/tests/docker/dockerfiles/debian-microblaze-cross.d/build-toolchain.sh
@@ -0,0 +1,88 @@
+#!/bin/bash
+
+set -e
+
+TARGET=microblaze-linux-musl
+LINUX_ARCH=microblaze
+
+J=$(expr $(nproc) / 2)
+TOOLCHAIN_INSTALL=/usr/local
+TOOLCHAIN_BIN=${TOOLCHAIN_INSTALL}/bin
+CROSS_SYSROOT=${TOOLCHAIN_INSTALL}/$TARGET/sys-root
+
+export PATH=${TOOLCHAIN_BIN}:$PATH
+
+#
+# Grab all of the source for the toolchain bootstrap.
+#
+
+wget https://ftp.gnu.org/gnu/binutils/binutils-2.37.tar.xz
+wget https://ftp.gnu.org/gnu/gcc/gcc-11.2.0/gcc-11.2.0.tar.xz
+wget https://www.musl-libc.org/releases/musl-1.2.2.tar.gz
+wget https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.70.tar.xz
+
+tar axf binutils-2.37.tar.xz
+tar axf gcc-11.2.0.tar.xz
+tar axf musl-1.2.2.tar.gz
+tar axf linux-5.10.70.tar.xz
+
+mv binutils-2.37 src-binu
+mv gcc-11.2.0 src-gcc
+mv musl-1.2.2 src-musl
+mv linux-5.10.70 src-linux
+
+mkdir -p bld-hdr bld-binu bld-gcc bld-musl
+mkdir -p ${CROSS_SYSROOT}/usr/include
+
+#
+# Install kernel headers
+#
+
+cd src-linux
+make headers_install ARCH=${LINUX_ARCH} INSTALL_HDR_PATH=${CROSS_SYSROOT}/usr
+cd ..
+
+#
+# Build binutils
+#
+
+cd bld-binu
+../src-binu/configure --disable-werror \
+  --prefix=${TOOLCHAIN_INSTALL} --with-sysroot --target=${TARGET}
+make -j${J}
+make install
+cd ..
+
+#
+# Build gcc, just the compiler so far.
+#
+
+cd bld-gcc
+../src-gcc/configure --disable-werror --disable-shared \
+  --prefix=${TOOLCHAIN_INSTALL} --with-sysroot --target=${TARGET} \
+  --enable-languages=c --disable-libssp --disable-libsanitizer \
+  --disable-libatomic --disable-libgomp --disable-libquadmath
+make -j${J} all-gcc
+make install-gcc
+cd ..
+
+#
+# Build musl.
+# We won't go through the extra step of building shared libraries
+# because we don't actually use them in QEMU docker testing.
+#
+
+cd bld-musl
+../src-musl/configure --prefix=/usr --host=${TARGET} --disable-shared
+make -j${j}
+make install DESTDIR=${CROSS_SYSROOT}
+cd ..
+
+#
+# Go back and build the compiler runtime
+#
+
+cd bld-gcc
+make -j${j}
+make install
+cd ..
diff --git a/tests/docker/dockerfiles/debian-nios2-cross.d/build-toolchain.sh b/tests/docker/dockerfiles/debian-nios2-cross.d/build-toolchain.sh
new file mode 100755
index 0000000000..ba3c9d8aff
--- /dev/null
+++ b/tests/docker/dockerfiles/debian-nios2-cross.d/build-toolchain.sh
@@ -0,0 +1,87 @@
+#!/bin/bash
+
+set -e
+
+TARGET=nios2-linux-gnu
+LINUX_ARCH=nios2
+
+J=$(expr $(nproc) / 2)
+TOOLCHAIN_INSTALL=/usr/local
+TOOLCHAIN_BIN=${TOOLCHAIN_INSTALL}/bin
+CROSS_SYSROOT=${TOOLCHAIN_INSTALL}/$TARGET/sys-root
+
+export PATH=${TOOLCHAIN_BIN}:$PATH
+
+#
+# Grab all of the source for the toolchain bootstrap.
+#
+
+wget https://ftp.gnu.org/gnu/binutils/binutils-2.37.tar.xz
+wget https://ftp.gnu.org/gnu/gcc/gcc-11.2.0/gcc-11.2.0.tar.xz
+wget https://ftp.gnu.org/gnu/glibc/glibc-2.34.tar.xz
+wget https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.70.tar.xz
+
+tar axf binutils-2.37.tar.xz
+tar axf gcc-11.2.0.tar.xz
+tar axf glibc-2.34.tar.xz
+tar axf linux-5.10.70.tar.xz
+
+mv binutils-2.37 src-binu
+mv gcc-11.2.0 src-gcc
+mv glibc-2.34 src-glibc
+mv linux-5.10.70 src-linux
+
+mkdir -p bld-hdr bld-binu bld-gcc bld-glibc
+mkdir -p ${CROSS_SYSROOT}/usr/include
+
+#
+# Install kernel and glibc headers
+#
+
+cd src-linux
+make headers_install ARCH=${LINUX_ARCH} INSTALL_HDR_PATH=${CROSS_SYSROOT}/usr
+cd ..
+
+cd bld-hdr
+../src-glibc/configure --prefix=/usr --host=${TARGET}
+make install-headers DESTDIR=${CROSS_SYSROOT}
+touch ${CROSS_SYSROOT}/usr/include/gnu/stubs.h
+cd ..
+
+#
+# Build binutils
+#
+
+cd bld-binu
+../src-binu/configure --disable-werror \
+  --prefix=${TOOLCHAIN_INSTALL} --with-sysroot --target=${TARGET}
+make -j${J}
+make install
+cd ..
+
+#
+# Build gcc, without shared libraries, because we do not yet
+# have a shared libc against which to link.
+#
+
+cd bld-gcc
+../src-gcc/configure --disable-werror --disable-shared \
+  --prefix=${TOOLCHAIN_INSTALL} --with-sysroot --target=${TARGET} \
+  --enable-languages=c --disable-libssp --disable-libsanitizer \
+  --disable-libatomic --disable-libgomp --disable-libquadmath
+make -j${J}
+make install
+cd ..
+
+#
+# Build glibc
+# There are a few random things that use c++ but we didn't build that
+# cross-compiler.  We can get away without them.  Disable CXX so that
+# glibc doesn't try to use the host c++ compiler.
+#
+
+cd bld-glibc
+CXX=false ../src-glibc/configure --prefix=/usr --host=${TARGET}
+make -j${j}
+make install DESTDIR=${CROSS_SYSROOT}
+cd ..
diff --git a/tests/docker/dockerfiles/debian-toolchain.docker b/tests/docker/dockerfiles/debian-toolchain.docker
new file mode 100644
index 0000000000..738d808aa6
--- /dev/null
+++ b/tests/docker/dockerfiles/debian-toolchain.docker
@@ -0,0 +1,36 @@
+#
+# Docker toolchain cross-compiler
+#
+# This dockerfile is used for building a cross-compiler toolchain.
+# The script for building the toolchain is supplied via extra-files.
+#
+FROM qemu/debian10
+
+# Install build utilities for building gcc and glibc.
+# ??? The build-dep isn't working, missing a number of
+# minimal build dependiencies, e.g. libmpc.
+
+RUN apt update && \
+    DEBIAN_FRONTEND=noninteractive apt install -yy eatmydata && \
+    DEBIAN_FRONTEND=noninteractive eatmydata \
+    apt install -y --no-install-recommends \
+        bison \
+        flex \
+        gawk \
+        libmpc-dev \
+        libmpfr-dev \
+        rsync \
+        texinfo \
+        wget && \
+    DEBIAN_FRONTEND=noninteractive eatmydata \
+    apt build-dep -yy --arch-only gcc glibc
+
+ADD build-toolchain.sh /root/build-toolchain.sh
+
+RUN cd /root && ./build-toolchain.sh
+
+# Throw away the extra toolchain build deps, the downloaded source,
+# and the build trees by restoring the original debian10 image,
+# then copying the built toolchain from stage 0.
+FROM qemu/debian10
+COPY --from=0 /usr/local /usr/local
diff --git a/tests/plugin/insn.c b/tests/plugin/insn.c
index 0f6a1938c1..d229fdc001 100644
--- a/tests/plugin/insn.c
+++ b/tests/plugin/insn.c
@@ -18,6 +18,8 @@ QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION;
 
 static uint64_t insn_count;
 static bool do_inline;
+static bool do_size;
+static GArray *sizes;
 
 static void vcpu_insn_exec_before(unsigned int cpu_index, void *udata)
 {
@@ -49,13 +51,35 @@ static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb)
                 insn, vcpu_insn_exec_before, QEMU_PLUGIN_CB_NO_REGS,
                 GUINT_TO_POINTER(vaddr));
         }
+
+        if (do_size) {
+            size_t sz = qemu_plugin_insn_size(insn);
+            if (sz > sizes->len) {
+                g_array_set_size(sizes, sz);
+            }
+            unsigned long *cnt = &g_array_index(sizes, unsigned long, sz);
+            (*cnt)++;
+        }
     }
 }
 
 static void plugin_exit(qemu_plugin_id_t id, void *p)
 {
-    g_autofree gchar *out = g_strdup_printf("insns: %" PRIu64 "\n", insn_count);
-    qemu_plugin_outs(out);
+    g_autoptr(GString) out = g_string_new(NULL);
+
+    if (do_size) {
+        int i;
+        for (i = 0; i <= sizes->len; i++) {
+            unsigned long *cnt = &g_array_index(sizes, unsigned long, i);
+            if (*cnt) {
+                g_string_append_printf(out,
+                                       "len %d bytes: %ld insns\n", i, *cnt);
+            }
+        }
+    } else {
+        g_string_append_printf(out, "insns: %" PRIu64 "\n", insn_count);
+    }
+    qemu_plugin_outs(out->str);
 }
 
 QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
@@ -70,12 +94,21 @@ QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id,
                 fprintf(stderr, "boolean argument parsing failed: %s\n", opt);
                 return -1;
             }
+        } else if (g_strcmp0(tokens[0], "sizes") == 0) {
+            if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &do_size)) {
+                fprintf(stderr, "boolean argument parsing failed: %s\n", opt);
+                return -1;
+            }
         } else {
             fprintf(stderr, "option parsing failed: %s\n", opt);
             return -1;
         }
     }
 
+    if (do_size) {
+        sizes = g_array_new(true, true, sizeof(unsigned long));
+    }
+
     qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans);
     qemu_plugin_register_atexit_cb(id, plugin_exit, NULL);
     return 0;
diff --git a/tests/tcg/configure.sh b/tests/tcg/configure.sh
index 1f985ccfc0..9b76f58258 100755
--- a/tests/tcg/configure.sh
+++ b/tests/tcg/configure.sh
@@ -46,7 +46,7 @@ fi
 : ${cross_cc_aarch64="aarch64-linux-gnu-gcc"}
 : ${cross_cc_aarch64_be="$cross_cc_aarch64"}
 : ${cross_cc_cflags_aarch64_be="-mbig-endian"}
-: $(cross_cc_alpha="alpha-linux-gnu-gcc")
+: ${cross_cc_alpha="alpha-linux-gnu-gcc"}
 : ${cross_cc_arm="arm-linux-gnueabihf-gcc"}
 : ${cross_cc_cflags_armeb="-mbig-endian"}
 : ${cross_cc_hexagon="hexagon-unknown-linux-musl-clang"}
@@ -55,17 +55,19 @@ fi
 : ${cross_cc_i386="i686-linux-gnu-gcc"}
 : ${cross_cc_cflags_i386="-m32"}
 : ${cross_cc_m68k="m68k-linux-gnu-gcc"}
-: $(cross_cc_mips64el="mips64el-linux-gnuabi64-gcc")
-: $(cross_cc_mips64="mips64-linux-gnuabi64-gcc")
-: $(cross_cc_mipsel="mipsel-linux-gnu-gcc")
-: $(cross_cc_mips="mips-linux-gnu-gcc")
+: ${cross_cc_microblaze="microblaze-linux-musl-gcc"}
+: ${cross_cc_mips64el="mips64el-linux-gnuabi64-gcc"}
+: ${cross_cc_mips64="mips64-linux-gnuabi64-gcc"}
+: ${cross_cc_mipsel="mipsel-linux-gnu-gcc"}
+: ${cross_cc_mips="mips-linux-gnu-gcc"}
+: ${cross_cc_nios2="nios2-linux-gnu-gcc"}
 : ${cross_cc_ppc="powerpc-linux-gnu-gcc"}
 : ${cross_cc_cflags_ppc="-m32"}
 : ${cross_cc_ppc64="powerpc64-linux-gnu-gcc"}
 : ${cross_cc_ppc64le="powerpc64le-linux-gnu-gcc"}
-: $(cross_cc_riscv64="riscv64-linux-gnu-gcc")
+: ${cross_cc_riscv64="riscv64-linux-gnu-gcc"}
 : ${cross_cc_s390x="s390x-linux-gnu-gcc"}
-: $(cross_cc_sh4="sh4-linux-gnu-gcc")
+: ${cross_cc_sh4="sh4-linux-gnu-gcc"}
 : ${cross_cc_cflags_sparc="-m32 -mv8plus -mcpu=ultrasparc"}
 : ${cross_cc_sparc64="sparc64-linux-gnu-gcc"}
 : ${cross_cc_cflags_sparc64="-m64 -mcpu=ultrasparc"}
@@ -133,6 +135,11 @@ for target in $target_list; do
       container_image=debian-m68k-cross
       container_cross_cc=m68k-linux-gnu-gcc
       ;;
+    microblaze-*)
+      container_hosts=x86_64
+      container_image=debian-microblaze-cross
+      container_cross_cc=microblaze-linux-musl-gcc
+      ;;
     mips64el-*)
       container_hosts=x86_64
       container_image=debian-mips64el-cross
@@ -153,6 +160,11 @@ for target in $target_list; do
       container_image=debian-mips-cross
       container_cross_cc=mips-linux-gnu-gcc
       ;;
+    nios2-*)
+      container_hosts=x86_64
+      container_image=debian-nios2-cross
+      container_cross_cc=nios2-linux-gnu-gcc
+      ;;
     ppc-*|ppc64abi32-*)
       container_hosts=x86_64
       container_image=debian-powerpc-test-cross
diff --git a/tests/tcg/multiarch/Makefile.target b/tests/tcg/multiarch/Makefile.target
index 6ccb592aac..a83efb4a9d 100644
--- a/tests/tcg/multiarch/Makefile.target
+++ b/tests/tcg/multiarch/Makefile.target
@@ -16,7 +16,6 @@ MULTIARCH_SRCS += $(notdir $(wildcard $(MULTIARCH_SRC)/linux/*.c))
 endif
 MULTIARCH_TESTS = $(MULTIARCH_SRCS:.c=)
 
-$(info SRCS=${MULTIARCH_SRCS} and ${MULTIARCH_TESTS})
 #
 # The following are any additional rules needed to build things
 #
@@ -61,8 +60,6 @@ run-gdbstub-sha1: sha1
 		--bin $< --test $(MULTIARCH_SRC)/gdbstub/sha1.py, \
 	"basic gdbstub support")
 
-EXTRA_RUNS += run-gdbstub-sha1
-
 run-gdbstub-qxfer-auxv-read: sha1
 	$(call run-test, $@, $(GDB_SCRIPT) \
 		--gdb $(HAVE_GDB_BIN) \
@@ -70,11 +67,19 @@ run-gdbstub-qxfer-auxv-read: sha1
 		--bin $< --test $(MULTIARCH_SRC)/gdbstub/test-qxfer-auxv-read.py, \
 	"basic gdbstub qXfer:auxv:read support")
 
+run-gdbstub-thread-breakpoint: testthread
+	$(call run-test, $@, $(GDB_SCRIPT) \
+		--gdb $(HAVE_GDB_BIN) \
+		--qemu $(QEMU) --qargs "$(QEMU_OPTS)" \
+		--bin $< --test $(MULTIARCH_SRC)/gdbstub/test-thread-breakpoint.py, \
+	"hitting a breakpoint on non-main thread")
+
 else
 run-gdbstub-%:
 	$(call skip-test, "gdbstub test $*", "need working gdb")
 endif
-EXTRA_RUNS += run-gdbstub-sha1 run-gdbstub-qxfer-auxv-read
+EXTRA_RUNS += run-gdbstub-sha1 run-gdbstub-qxfer-auxv-read \
+	      run-gdbstub-thread-breakpoint
 
 # ARM Compatible Semi Hosting Tests
 #
diff --git a/tests/tcg/multiarch/gdbstub/test-thread-breakpoint.py b/tests/tcg/multiarch/gdbstub/test-thread-breakpoint.py
new file mode 100644
index 0000000000..798d508bc7
--- /dev/null
+++ b/tests/tcg/multiarch/gdbstub/test-thread-breakpoint.py
@@ -0,0 +1,60 @@
+from __future__ import print_function
+#
+# Test auxiliary vector is loaded via gdbstub
+#
+# This is launched via tests/guest-debug/run-test.py
+#
+
+import gdb
+import sys
+
+failcount = 0
+
+def report(cond, msg):
+    "Report success/fail of test"
+    if cond:
+        print ("PASS: %s" % (msg))
+    else:
+        print ("FAIL: %s" % (msg))
+        global failcount
+        failcount += 1
+
+def run_test():
+    "Run through the tests one by one"
+
+    sym, ok = gdb.lookup_symbol("thread1_func")
+    gdb.execute("b thread1_func")
+    gdb.execute("c")
+
+    frame = gdb.selected_frame()
+    report(str(frame.function()) == "thread1_func", "break @ %s"%frame)
+
+#
+# This runs as the script it sourced (via -x, via run-test.py)
+#
+try:
+    inferior = gdb.selected_inferior()
+    arch = inferior.architecture()
+    print("ATTACHED: %s" % arch.name())
+except (gdb.error, AttributeError):
+    print("SKIPPING (not connected)", file=sys.stderr)
+    exit(0)
+
+if gdb.parse_and_eval('$pc') == 0:
+    print("SKIP: PC not set")
+    exit(0)
+
+try:
+    # These are not very useful in scripts
+    gdb.execute("set pagination off")
+    gdb.execute("set confirm off")
+
+    # Run the actual tests
+    run_test()
+except (gdb.error):
+    print ("GDB Exception: %s" % (sys.exc_info()[0]))
+    failcount += 1
+    pass
+
+print("All tests complete: %d failures" % failcount)
+exit(failcount)
diff --git a/tests/tcg/nios2/Makefile.target b/tests/tcg/nios2/Makefile.target
new file mode 100644
index 0000000000..b38e2352b7
--- /dev/null
+++ b/tests/tcg/nios2/Makefile.target
@@ -0,0 +1,11 @@
+# nios2 specific test tweaks
+
+# Currently nios2 signal handling is broken
+run-signals: signals
+	$(call skip-test, $<, "BROKEN")
+run-plugin-signals-with-%:
+	$(call skip-test, $<, "BROKEN")
+run-linux-test: linux-test
+	$(call skip-test, $<, "BROKEN")
+run-plugin-linux-test-with-%:
+	$(call skip-test, $<, "BROKEN")
diff --git a/tests/tcg/sh4/Makefile.target b/tests/tcg/sh4/Makefile.target
index 47c39a44b6..0e96aeff16 100644
--- a/tests/tcg/sh4/Makefile.target
+++ b/tests/tcg/sh4/Makefile.target
@@ -12,3 +12,9 @@ run-signals: signals
 	$(call skip-test, $<, "BROKEN")
 run-plugin-signals-with-%:
 	$(call skip-test, $<, "BROKEN")
+
+# This test is currently broken: https://gitlab.com/qemu-project/qemu/-/issues/704
+run-linux-test: linux-test
+	$(call skip-test, $<, "BROKEN")
+run-plugin-linux-test-with-%:
+	$(call skip-test, $<, "BROKEN")
diff --git a/tests/vm/openbsd b/tests/vm/openbsd
index c4c78a80f1..337fe7c303 100755
--- a/tests/vm/openbsd
+++ b/tests/vm/openbsd
@@ -22,8 +22,8 @@ class OpenBSDVM(basevm.BaseVM):
     name = "openbsd"
     arch = "x86_64"
 
-    link = "https://cdn.openbsd.org/pub/OpenBSD/6.9/amd64/install69.iso"
-    csum = "140d26548aec680e34bb5f82295414228e7f61e4f5e7951af066014fda2d6e43"
+    link = "https://cdn.openbsd.org/pub/OpenBSD/7.0/amd64/install70.iso"
+    csum = "1882f9a23c9800e5dba3dbd2cf0126f552605c915433ef4c5bb672610a4ca3a4"
     size = "20G"
     pkgs = [
         # tools
@@ -95,10 +95,9 @@ class OpenBSDVM(basevm.BaseVM):
         self.console_wait_send("Terminal type",           "xterm\n")
         self.console_wait_send("System hostname",         "openbsd\n")
         self.console_wait_send("Which network interface", "vio0\n")
-        self.console_wait_send("IPv4 address",            "dhcp\n")
+        self.console_wait_send("IPv4 address",            "autoconf\n")
         self.console_wait_send("IPv6 address",            "none\n")
         self.console_wait_send("Which network interface", "done\n")
-        self.console_wait_send("DNS domain name",         "localnet\n")
         self.console_wait("Password for root account")
         self.console_send("%s\n" % self._config["root_pass"])
         self.console_wait("Password for root account")