Build libiwasm using gcc-i386-elf

Makefile

@@ -9,3 +9,9 @@ run-external:
 
 bochs-host:
 	nix shell nixpkgs#bochs --command sh -c "bochs -q -f ./examples/arch/bochs/bochsrc-host.txt -q"
+
+qemu-host:
+	qemu-system-i386 -drive file=./examples/build-bochs/sum/system.iso,media=cdrom -boot d -m 32 -S -s
+
+gdb-host:
+	nix shell nixpkgs#gdb --command gdb ./examples/build-bochs/sum/system.elf -ex "set substitute-path build-bochs ./examples/build-bochs" -ex "target remote localhost:1234" -ex "break os_main"

examples/Makefile

@@ -1,16 +1,5 @@
 ARCH ?= bochs
-
 BUILD_DIR := build-${ARCH}
-FAIL_BIN       ?= /home/fail/bin
-FAIL_SERVER    ?= ${FAIL_BIN}/generic-experiment-server
-FAIL_TRACE     ?= ${FAIL_BIN}/generic-tracing-client
-FAIL_INJECT    ?= ${FAIL_BIN}/generic-experiment-client
-FAIL_DUMP      ?= ${FAIL_BIN}/dump-trace
-FAIL_IMPORT    ?= ${FAIL_BIN}/import-trace --enable-sanitychecks
-FAIL_PRUNE     ?= ${FAIL_BIN}/prune-trace
-BOCHS_RUNNER   ?= ${FAIL_BIN}/bochs-experiment-runner.py
-RESULT_BROWSER ?= ${FAIL_BIN}/resultbrowser.py
-
 EXPERIMENTS := $(patsubst %.c,%,$(shell echo *.c))
 
 include arch/${ARCH}.mk
@@ -25,42 +14,39 @@ help:
 	@echo "Current Configuartion"
 	@echo "	ARCH=${ARCH}"
 
-
 clean:
-	rm -f *.wasm
+	# rm -f *.wasm
-	rm -f *.aot
+	# rm -f *.aot
-	rm -f *_wasm.c
+	# rm -f *_wasm.c
-	rm -f *.d
+	# rm -f *.d
-	rm -f *.o
+	# rm -f *.o
-	rm -f embed/*_host.c
+	# rm -f embed/*_host.c
-	rm -f *_host.elf
+	# rm -f *_host.elf
-	rm -rf ${BUILD_DIR}
+	rm -rf ${BUILD_DIR}/*
 
 clean-%:
 	rm -rf ${BUILD_DIR}/$(patsubst clean-%,%,$@)
 	contrib/clean-db '${ARCH}/$(patsubst clean-%,%,$@)'
 
-
 build-%:
 	@echo "****************************************************************\n\
-* The next step is to trace a golden run. The golden run executes the\n\
+	* The next step is to trace a golden run. The golden run executes the\n \
-* system-under-test (SUT) within the emulator. A trace file is \n\
+	* system-under-test (SUT) within the emulator. A trace file is \n \
-* produced and saved as: ${BUILD_DIR}/main/trace.pb\n\
+	* produced and saved as: ${BUILD_DIR}/main/trace.pb\n \
-*\n\
+	*\n \
-*    $ make trace-$(patsubst build-%,%,$@)\n\
+	*    $ make trace-$(patsubst build-%,%,$@)\n \
-****************************************************************"
+	****************************************************************"
-
 
 trace-%:
 	@echo "****************************************************************\n\
-* The trace is now generated. It can be viewed with\n\
+	* The trace is now generated. It can be viewed with\n \
-*\n\
+	*\n \
-*   $ make dump-$(patsubst trace-%,%,$@)\n\
+	*   $ make dump-$(patsubst trace-%,%,$@)\n \
-*\n\
+	*\n \
-* Next, we have to import the trace into the database\n\
+	* Next, we have to import the trace into the database\n \
-*\n\
+	*\n \
-*    $ make import-$(patsubst trace-%,%,$@)\n\
+	*    $ make import-$(patsubst trace-%,%,$@)\n \
-****************************************************************"
+	****************************************************************"
 
 dump-%: ${BUILD_DIR}/%/trace.pb
 	${FAIL_DUMP} $(shell dirname $<)/trace.pb
@@ -75,17 +61,17 @@ ${HOME}/.my.cnf:
 
 import-%: import-arch-%
 	@echo "****************************************************************\n\
-* The golden run sits now within the MySQL database. If you are interested,\n\
+	* The golden run sits now within the MySQL database. If you are interested,\n \
-* use the 'mysql' command to inspect the curent state of the DB. The tables\n\
+	* use the 'mysql' command to inspect the curent state of the DB. The tables\n \
-* trace, fsppilot, and fspgroup are of special interest.\n\
+	* trace, fsppilot, and fspgroup are of special interest.\n \
-*\n\
+	*\n \
-* Next, we have to run the campaign sever and the injection client\n\
+	* Next, we have to run the campaign sever and the injection client\n \
-*\n\
+	*\n \
-*   $ make server-$(patsubst import-%,%,$@) &\n\
+	*   $ make server-$(patsubst import-%,%,$@) &\n \
-*   $ make client-$(patsubst import-%,%,$@) \n\n\
+	*   $ make client-$(patsubst import-%,%,$@) \n\n \
-* Afterwards, the results can be viewd with\n\
+	* Afterwards, the results can be viewd with\n \
-*   $ make result-$(subst import-,,$@)\n\
+	*   $ make result-$(subst import-,,$@)\n \
-****************************************************************"
+	****************************************************************"
 
 server-%:
 	${FAIL_SERVER} -v ${ARCH}/$(subst server-,,$@) -b %
@@ -94,16 +80,15 @@ result-%:
 	@echo "select variant, benchmark, resulttype, sum(t.time2 - t.time1 + 1) as faults\
 			FROM variant v \
 			JOIN trace t ON v.id = t.variant_id \
-			JOIN fspgroup g ON g.variant_id = t.variant_id AND g.instr2 = t.instr2 AND g.data_address = t.data_address\
+			JOIN fspgroup g ON g.variant_id = t.variant_id AND g.instr2 = t.instr2 AND g.data_address = t.data_address \
 			JOIN result_GenericExperimentMessage r ON r.pilot_id = g.pilot_id \
 			JOIN fsppilot p ON r.pilot_id = p.id \
-			WHERE v.variant = \"${ARCH}/$(patsubst result-%,%,$@)\"\
+			WHERE v.variant = \"${ARCH}/$(patsubst result-%,%,$@)\" \
 			GROUP BY v.id, resulttype \
 			ORDER BY variant, benchmark, resulttype;"  |mysql -t
 
 resultbrowser:
 	${RESULT_BROWSER} --host=0.0.0.0 --port=5000
 
-
 # Do never remove implicitly generated stuff
 .SECONDARY:

examples/arch/bochs.mk

@@ -1,5 +1,9 @@
-# C -> WASM
 WASI_ROOT := /opt/wasi-sdk
+WAMR := /opt/wamr
+
+################################################################
+# C -> WASM
+
 WASI_CC := ${WASI_ROOT}/bin/clang
 WASI_CFLAGS := \
 	--target=wasm32 \
@@ -14,67 +18,6 @@ WASI_CFLAGS := \
 	-Wl,--export=__heap_base \
 	-Wl,--export=__data_end
 
-# WASM -> Baremetal
-WAMR := /opt/wamr
-
-WAMRC := /opt/wamr-wamrc/wamrc
-WAMRCFLAGS := \
-	--target=i386 \
-	--cpu=generic
-XXD := busybox xxd
-
-# NOTE: make build-sum: "error: bp cannot be used in ‘asm’ here"
-#       could remove "ebp" from the clobber list (ARCH_ASM_CLOBBER_ALL) or
-#       use the -fomit-frame-pointer flag to tell gcc it shouldn't rely on ebp for enter/leave...
-CC := /opt/crosscompiler/bin/i686-elf-gcc
-CFLAGS := \
-	-I. \
-	-O0 \
-	-m32 \
-	-ffunction-sections \
-	-fomit-frame-pointer \
-	-ggdb
-IWASM_LIB := /opt/wamr-libiwasm # Baremetal
-LDFLAGS = \
-	-Wl,-T linker.ld \
-	$^ \
-	-Wl,--build-id=none \
-	-static \
-	-nostdlib \
-	-m32 \
-	-Wl,-rpath,${IWASM_LIB} \
-	-L${IWASM_LIB} \
-	-liwasm \
-	-lc \
-	-lgcc
-INCL := \
-	-I${WAMR}/core/iwasm/include \
-	-I${WAMR}/core/shared/utils \
-	-I${WAMR}/core/shared/platform/baremetal \
-	-I/opt/crosscompiler/i686-elf/include
-
-CC_LINUX := gcc
-CFLAGS_LINUX := \
-	-I. \
-	-O0 \
-	-m32 \
-	-ffunction-sections \
-	-ggdb
-IWASM_LIB_LINUX := /opt/wamr-libiwasm-linux
-LDFLAGS_LINUX = \
-	$^ \
-	-m32 \
-	-Wl,-rpath,${IWASM_LIB_LINUX} \
-	-L${IWASM_LIB_LINUX} \
-	-liwasm \
-	-lm
-INCL_LINUX := \
-	-I${WAMR}/core/iwasm/include \
-	-I${WAMR}/core/shared/utils \
-	-I${WAMR}/core/shared/platform/linux
-
-################################################################
-# C -> WASM
 ${BUILD_DIR}/%/module.wasm: %.c
 	mkdir -p $(shell dirname $@)
 	${WASI_CC} ${WASI_CFLAGS} $< -o $@
@@ -92,20 +35,58 @@ ${BUILD_DIR}/%/module.wasm: %.c
 
 ################################################################
 # WASM -> AOT -> Loaded by Runtime (FAIL)
+
+WAMRC := /opt/wamr-wamrc/wamrc
+WAMRCFLAGS := \
+	--target=i386 \
+	--cpu=generic
+
 ${BUILD_DIR}/%/module.aot: ${BUILD_DIR}/%/module.wasm
 	${WAMRC} ${WAMRCFLAGS} -o $@ $<
 
+XXD := busybox xxd
+
 ${BUILD_DIR}/%/module_wasm.c: ${BUILD_DIR}/%/module.aot
 	${XXD} -i $< > $@
 
+# NOTE: make build-sum: "error: bp cannot be used in ‘asm’ here"
+#       could remove "ebp" from the clobber list (ARCH_ASM_CLOBBER_ALL) or
+#       use the -fomit-frame-pointer flag to tell gcc it shouldn't rely on ebp for enter/leave...
+CC := /opt/crosscompiler/bin/i386-elf-gcc
+CFLAGS := \
+	-I. \
+	-O0 \
+	-m32 \
+	-ffunction-sections \
+	-ffreestanding \
+	-fomit-frame-pointer \
+	-ggdb
+IWASM_LIB := /opt/wamr-libiwasm # Baremetal
+LDFLAGS = \
+	-Wl,-T linker.ld \
+	$^ \
+	-Wl,--build-id=none \
+	-static \
+	-nostdlib \
+	-m32 \
+	-L${IWASM_LIB} \
+	-liwasm \
+	-lc \
+	-lgcc \
+	-lm
+INCL := \
+	-I${WAMR}/core/iwasm/include \
+	-I${WAMR}/core/shared/utils \
+	-I${WAMR}/core/shared/platform/baremetal
+
 ${BUILD_DIR}/%/system.o: ${BUILD_DIR}/%/module_wasm.c
-	cp embed/host.c ${BUILD_DIR}/$*/module_host.c
+	cp embed/host-fail.c ${BUILD_DIR}/$*/module_host-fail.c
 	sed -i \
 	    -e "s/__WASM_ARRAY_FILE__/module_wasm.c/g" \
 	    -e "s/__WASM_ARRAY__/build_bochs_$*_module_aot/g" \
 	    -e "s/__WASM_ARRAY_LEN__/build_bochs_$*_module_aot_len/g" \
-	    ${BUILD_DIR}/$*/module_host.c
+	    ${BUILD_DIR}/$*/module_host-fail.c
-	${CC} ${CFLAGS} ${INCL} -c ${BUILD_DIR}/$*/module_host.c -o $@
+	${CC} ${CFLAGS} ${INCL} -c ${BUILD_DIR}/$*/module_host-fail.c -o $@
 
 ${BUILD_DIR}/startup.o: arch/bochs/startup.s
 	${CC} $< ${CFLAGS} -c -o $@
@@ -117,7 +98,30 @@ ${BUILD_DIR}/%/system.elf: ${BUILD_DIR}/%/system.o ${BUILD_DIR}/syscalls.o ${BUI
 	${CC} ${LDFLAGS} -o $@
 
 ################################################################
-# WASM -> AOT -> Loaded by Runtime (Host/Linux)
+# WASM -> AOT -> Loaded by Runtime (Host/Linux platform)
+
+CC_LINUX := gcc
+CFLAGS_LINUX := \
+	-I. \
+	-O0 \
+	-m32 \
+	-ffunction-sections \
+	-ggdb
+IWASM_LIB_LINUX := /opt/wamr-libiwasm-linux
+LDFLAGS_LINUX = \
+	$^ \
+	-Wl,--build-id=none \
+	-static \
+	-m32 \
+	-Wl,-rpath,${IWASM_LIB_LINUX} \
+	-L${IWASM_LIB_LINUX} \
+	-liwasm \
+	-lm
+INCL_LINUX := \
+	-I${WAMR}/core/iwasm/include \
+	-I${WAMR}/core/shared/utils \
+	-I${WAMR}/core/shared/platform/linux
+
 ${BUILD_DIR}/%/system-linux.o: ${BUILD_DIR}/%/module_wasm.c
 	cp embed/host-linux.c ${BUILD_DIR}/$*/module_host-linux.c
 	sed -i \
@@ -131,7 +135,61 @@ ${BUILD_DIR}/%/system-linux.elf: ${BUILD_DIR}/%/system-linux.o
 	${CC_LINUX} ${LDFLAGS_LINUX} -o $@
 
 ################################################################
-# Bochs
+# WASM -> AOT -> Loaded by Runtime (Host/Baremetal platform)
+
+CC_BAREMETAL := /opt/crosscompiler/bin/i386-elf-gcc
+CFLAGS_BAREMETAL := \
+	-I. \
+	-O0 \
+	-m32 \
+	-ffunction-sections \
+	-ffreestanding \
+	-ggdb
+IWASM_LIB_BAREMETAL := /opt/wamr-libiwasm
+LDFLAGS_BAREMETAL = \
+	$^ \
+	-Wl,--build-id=none \
+	-static \
+	-nostdlib \
+	-m32 \
+	-L${IWASM_LIB_BAREMETAL} \
+	-liwasm \
+	-lc \
+	-lgcc \
+	-lm \
+	--entry main
+# Trace where the memset symbol is actually coming from
+# LDFLAGS_BAREMETAL += -Wl,-Map,$@.map -Wl,--trace-symbol=memset
+INCL_BAREMETAL := \
+	-I${WAMR}/core/iwasm/include \
+	-I${WAMR}/core/shared/utils \
+	-I${WAMR}/core/shared/platform/baremetal
+
+${BUILD_DIR}/%/system-baremetal.o: ${BUILD_DIR}/%/module_wasm.c
+	cp embed/host-baremetal.c ${BUILD_DIR}/$*/module_host-baremetal.c
+	sed -i \
+	    -e "s/__WASM_ARRAY_FILE__/module_wasm.c/g" \
+	    -e "s/__WASM_ARRAY__/build_bochs_$*_module_aot/g" \
+	    -e "s/__WASM_ARRAY_LEN__/build_bochs_$*_module_aot_len/g" \
+	    ${BUILD_DIR}/$*/module_host-baremetal.c
+	${CC_BAREMETAL} ${CFLAGS_BAREMETAL} ${INCL_BAREMETAL} -c ${BUILD_DIR}/$*/module_host-baremetal.c -o $@
+
+${BUILD_DIR}/%/system-baremetal.elf: ${BUILD_DIR}/%/system-baremetal.o ${BUILD_DIR}/syscalls.o
+	${CC_BAREMETAL} ${LDFLAGS_BAREMETAL} -o $@
+
+################################################################
+# Fail/Bochs
+
+FAIL_BIN ?= /home/fail/bin
+FAIL_SERVER ?= ${FAIL_BIN}/generic-experiment-server
+FAIL_TRACE ?= ${FAIL_BIN}/generic-tracing-client
+FAIL_INJECT ?= ${FAIL_BIN}/generic-experiment-client
+FAIL_DUMP ?= ${FAIL_BIN}/dump-trace
+FAIL_IMPORT ?= ${FAIL_BIN}/import-trace --enable-sanitychecks
+FAIL_PRUNE ?= ${FAIL_BIN}/prune-trace
+BOCHS_RUNNER ?= ${FAIL_BIN}/bochs-experiment-runner.py
+RESULT_BROWSER ?= ${FAIL_BIN}/resultbrowser.py
+
 ${BUILD_DIR}/%/system.iso: ${BUILD_DIR}/%/system.elf
 	rm -rf $(shell dirname $<)/grub
 	mkdir -p $(shell dirname $<)/grub/boot/grub
@@ -217,6 +275,20 @@ linux-run-$1: ${BUILD_DIR}/$1/system-linux.elf
 linux-gdb-$1: ${BUILD_DIR}/$1/system-linux.elf
 	gdb --tui ${BUILD_DIR}/$1/system-linux.elf
 
+linux-objdump-$1:
+	objdump --disassemble --disassembler-options intel --disassembler-color=off --source ${BUILD_DIR}/$1/system-linux.elf | less
+
+baremetal-build-$1: ${BUILD_DIR}/$1/system-baremetal.elf
+
+baremetal-run-$1: ${BUILD_DIR}/$1/system-baremetal.elf
+	${BUILD_DIR}/$1/system-baremetal.elf
+
+baremetal-gdb-$1: ${BUILD_DIR}/$1/system-baremetal.elf
+	gdb --tui -ex "set substitute-path /wamrlib ${WAMR}" ${BUILD_DIR}/$1/system-baremetal.elf
+
+baremetal-objdump-$1:
+	objdump --disassemble --disassembler-options intel --disassembler-color=off --source ${BUILD_DIR}/$1/system-baremetal.elf | less
+
 bochs-run-$1: ${BUILD_DIR}/$1/system.iso
 	bochs -q -f arch/bochs/bochsrc-docker.txt
 

examples/embed/host-baremetal.c

@@ -0,0 +1,85 @@
+// https://github.com/bytecodealliance/wasm-micro-runtime/blob/WAMR-2.4.4/doc/embed_wamr.md
+
+#include "lib.c"
+
+#include "bh_platform.h"
+#include "wasm_export.h"
+
+#include "__WASM_ARRAY_FILE__"
+
+#define STACK_SIZE (4 * 1024)
+#define HEAP_SIZE STACK_SIZE
+#define RUNTIME_POOL_SIZE (4 * STACK_SIZE)
+
+// TODO: Set this up so the lsp actually finds the includes...
+
+// MAIN() {
+int main(int argc, char *argv[]) {
+  char error_buf[128];
+  wasm_module_t module;
+  wasm_module_inst_t module_inst;
+  wasm_function_inst_t func;
+  wasm_exec_env_t exec_env;
+
+  /* initialize the wasm runtime */
+  static char global_heap_buf[RUNTIME_POOL_SIZE];
+  static RuntimeInitArgs init_args;
+  memset(&init_args, 0, sizeof(RuntimeInitArgs));
+
+  // init_args.mem_alloc_type = Alloc_With_System_Allocator;
+  init_args.mem_alloc_type = Alloc_With_Pool;
+  init_args.mem_alloc_option.pool.heap_buf = global_heap_buf;
+  init_args.mem_alloc_option.pool.heap_size = sizeof(global_heap_buf);
+  init_args.max_thread_num = 1;
+  if (!wasm_runtime_full_init(&init_args)) {
+    return 1;
+  }
+
+  /* parse the WASM file from buffer and create a WASM module */
+  module = wasm_runtime_load(__WASM_ARRAY__, __WASM_ARRAY_LEN__, error_buf,
+                             sizeof(error_buf));
+
+  if (!module) {
+    return 1;
+  }
+
+  /* create an instance of the WASM module (WASM linear memory is ready) */
+  module_inst = wasm_runtime_instantiate(module, STACK_SIZE, HEAP_SIZE,
+                                         error_buf, sizeof(error_buf));
+
+  if (!module_inst) {
+    return 1;
+  }
+
+  /* lookup a WASM function by its name, the function signature can NULL here */
+  func = wasm_runtime_lookup_function(module_inst, "wasm_module");
+
+  /* create an execution environment to execute arbitrary WASM functions */
+  exec_env = wasm_runtime_create_exec_env(module_inst, STACK_SIZE);
+
+  /* arguments are always transferred in 32-bit element */
+  uint32_t args[1];
+
+  /* call an arbitrary WASM function */
+  // MARKER(start_trace);
+  if (!wasm_runtime_call_wasm(exec_env, func, 0, args)) {
+    /* function wasn't called correctly */
+  }
+  // MARKER(stop_trace);
+  //
+  uint32_t result = args[0];
+
+  wasm_runtime_destroy_exec_env(exec_env);
+  wasm_runtime_deinstantiate(module_inst);
+  wasm_runtime_unload(module);
+  wasm_runtime_destroy();
+
+  /* the return value is stored in args[0] */
+  if (result == 100) {
+    // MARKER(ok_marker);
+    return 0;
+  } else {
+    // MARKER(fail_marker);
+    return 1;
+  }
+}

examples/embed/host-fail.c

@@ -59,7 +59,7 @@ MAIN() {
   exec_env = wasm_runtime_create_exec_env(module_inst, STACK_SIZE);
 
   /* arguments are always transferred in 32-bit element */
-  uint32 args[1];
+  uint32_t args[1];
 
   /* call an arbitrary WASM function */
   MARKER(start_trace);

examples/embed/host-linux.c

@@ -61,7 +61,7 @@ int main(int argc, char *argv[]) {
   exec_env = wasm_runtime_create_exec_env(module_inst, STACK_SIZE);
 
   /* arguments are always transferred in 32-bit element */
-  uint32 args[1];
+  uint32_t args[1];
 
   /* call an arbitrary WASM function */
   // MARKER(start_trace);

wasm-base.dockerfile

@@ -21,7 +21,7 @@ RUN apt-get update \
 ARG GCCVERSION=5.4.0
 ARG BINUTILSVERSION=2.26.1
 ARG CROSSPREFIX=/opt/crosscompiler
-ARG CROSSTARGET=i686-elf
+ARG CROSSTARGET=i386-elf
 
 # Build Binutils for cross-compilation
 WORKDIR /
@@ -162,12 +162,22 @@ RUN git clone https://gitea.vps.chriphost.de/christoph/wamr wamrlib \
 #  && make -j$(nproc)
 
 # Build WAMR libiwasm (vmcore interpreter runtime - to run wasm modules embedded in a native application)
+# TODO: Should probably put the cross-compilation definitions in a toolchain file
+COPY --from=compiler-builder /opt/crosscompiler /opt/crosscompiler
 WORKDIR /wamrlib
 RUN mkdir build_libiwasm && cd build_libiwasm \
  && cmake \
+    -DCMAKE_SYSTEM_NAME=Generic \
+    -DCMAKE_SYSTEM_PROCESSOR=i386 \
+    -DCMAKE_C_COMPILER=/opt/crosscompiler/bin/i386-elf-gcc \
+    -DCMAKE_CXX_COMPILER=/opt/crosscompiler/bin/i386-elf-g++ \
+    -DCMAKE_ASM_COMPILER=/opt/crosscompiler/bin/i386-elf-gcc \
+    -DCMAKE_TRY_COMPILE_TARGET_TYPE=STATIC_LIBRARY \
+    -DCMAKE_BUILD_TYPE=Debug \
+    -DCMAKE_VERBOSE_MAKEFILE=ON \
     -DWAMR_BUILD_PLATFORM=baremetal \
     -DWAMR_BUILD_TARGET=X86_32 \
-    -DWAMR_BUILD_AOT=0 \
+    -DWAMR_BUILD_AOT=1 \
     -DWAMR_BUILD_WAMR_COMPILER=0 \
     -DWAMR_BUILD_INTERP=1 \
     -DWAMR_BUILD_FAST_INTERP=0 \
@@ -234,7 +244,12 @@ RUN ln -sf /opt/wamr/product-mini/platforms/linux/build_iwasm /opt/wamr-iwasm \
  && ln -sf /opt/wamr/build_libiwasm /opt/wamr-libiwasm \
  && ln -sf /opt/wamr/build_libiwasm_linux /opt/wamr-libiwasm-linux
 
-COPY ./examples /home/ubuntu/examples
+RUN useradd fail \
-WORKDIR /home/ubuntu/examples
+ && mkdir /home/fail && chown fail /home/fail \
+ && echo 'fail:fail' | chpasswd && chsh fail --shell /usr/bin/fish \
+ && adduser fail sudo
+
+COPY ./examples /home/fail/examples
+WORKDIR /home/fail/examples
 
 ENV PATH="$PATH:/opt/wasi-sdk/bin:/opt/wamr-iwasm:/opt/wamr-wamrc"