feat(wasm): add browser QEMU build

qemu/patches/0001-xteink-machine.patch

@@ -564,12 +564,13 @@ index 5f4022f..1477f15 100644
          switch (opcode) {
              case I2C_OPCODE_RSTART:
                  i2c_end_transfer(s->bus);
-@@ -261,9 +272,16 @@ static void esp32_i2c_init(Object * obj)
+@@ -261,9 +272,17 @@ static void esp32_i2c_init(Object * obj)
      fifo8_create(&s->rx_fifo, ESP32_I2C_FIFO_LENGTH);
  }
  
 +static const Property esp32_i2c_properties[] = {
 +    DEFINE_PROP_BOOL("c3", Esp32I2CState, c3, false),
++    DEFINE_PROP_END_OF_LIST(),
 +};
 +
  static void esp32_i2c_class_init(ObjectClass * klass, void * data)
@@ -708,11 +709,15 @@ diff --git i/hw/riscv/Kconfig w/hw/riscv/Kconfig
 index 192ab47..293808d 100644
 --- i/hw/riscv/Kconfig
 +++ w/hw/riscv/Kconfig
-@@ -119,4 +119,5 @@ config RISCV_ESP32C3
+@@ -119,4 +119,9 @@ config RISCV_ESP32C3
      select OPENCORES_ETH
      select UNIMP
      select ESP_RGB
 +    select I2C
++    select SSI
++    select SSI_SD
++    select SSI_M25P80
++    select CAN_SJA1000
  
 diff --git i/hw/riscv/esp32c3.c w/hw/riscv/esp32c3.c
 index ed698fb..2f1ccbf 100644

qemu/wasm/Dockerfile

@@ -0,0 +1,92 @@
+ARG EMSDK_VERSION=3.1.50
+ARG ZLIB_VERSION=1.3.1
+ARG GLIB_SERIES=2.75
+ARG GLIB_VERSION=2.75.0
+ARG FFI_COMMIT=adbcf2b247696dde2667ab552cb93e0c79455c84
+
+FROM emscripten/emsdk:${EMSDK_VERSION} AS base
+ENV TARGET=/build/target
+ENV CFLAGS="-O2 -matomics -mbulk-memory -DNDEBUG -sWASM_BIGINT -DWASM_BIGINT -pthread -sMALLOC=mimalloc -sASYNCIFY=1"
+ENV CXXFLAGS="$CFLAGS"
+ENV LDFLAGS="-L$TARGET/lib -O2"
+ENV CPATH="$TARGET/include"
+ENV PKG_CONFIG_PATH="$TARGET/lib/pkgconfig"
+ENV EM_PKG_CONFIG_PATH="$PKG_CONFIG_PATH"
+ENV CHOST=wasm32-unknown-linux
+ENV MAKEFLAGS=-j2
+RUN apt-get update && apt-get install -y \
+    autoconf build-essential libglib2.0-dev libtool ninja-build pkgconf python3-pip
+RUN pip3 install meson==1.5.0 tomli
+WORKDIR /build
+RUN mkdir -p "$TARGET"
+
+FROM base AS zlib
+ARG ZLIB_VERSION
+RUN mkdir /zlib \
+    && curl -Ls "https://zlib.net/fossils/zlib-${ZLIB_VERSION}.tar.gz" \
+       | tar xzC /zlib --strip-components=1
+WORKDIR /zlib
+RUN emconfigure ./configure --prefix="$TARGET" --static && make install
+
+FROM base AS libffi
+ARG FFI_COMMIT
+RUN git clone https://github.com/libffi/libffi /libffi \
+    && git -C /libffi checkout "$FFI_COMMIT"
+WORKDIR /libffi
+RUN autoreconf -fiv \
+    && emconfigure ./configure --host="$CHOST" --prefix="$TARGET" \
+       --enable-static --disable-shared --disable-dependency-tracking \
+       --disable-builddir --disable-multi-os-directory --disable-raw-api \
+       --disable-structs --disable-docs \
+    && emmake make install SUBDIRS=include
+
+FROM base AS glib
+ARG GLIB_SERIES
+ARG GLIB_VERSION
+COPY --from=zlib /build/ /build/
+COPY --from=libffi /build/ /build/
+RUN mkdir /stub \
+    && printf '%s\n' '#include <netdb.h>' \
+       'int res_query(const char *n, int c, int t, unsigned char *d, int l) { h_errno = HOST_NOT_FOUND; return -1; }' \
+       >/stub/res_query.c \
+    && emcc $CFLAGS -c /stub/res_query.c -fPIC -o /stub/libresolv.o \
+    && ar rcs "$TARGET/lib/libresolv.a" /stub/libresolv.o
+RUN mkdir /glib \
+    && curl -Lks "https://download.gnome.org/sources/glib/${GLIB_SERIES}/glib-${GLIB_VERSION}.tar.xz" \
+       | tar xJC /glib --strip-components=1
+WORKDIR /glib
+ENV CFLAGS="-Wno-error=incompatible-function-pointer-types -O2 -matomics -mbulk-memory -DNDEBUG -pthread -sWASM_BIGINT -sMALLOC=mimalloc -sASYNCIFY=1"
+ENV CXXFLAGS="$CFLAGS"
+RUN printf '%s\n' \
+    '#!/bin/bash' \
+    'set -euo pipefail' \
+    'cmd="$1"; shift' \
+    'args=()' \
+    'for arg in "$@"; do args+=("${arg/-Werror=unused-command-line-argument/-Wno-error=unused-command-line-argument}"); done' \
+    '"$cmd" "${args[@]}"' \
+    >/emcc-meson-wrap.sh && chmod +x /emcc-meson-wrap.sh
+RUN printf '%s\n' \
+    '[host_machine]' \
+    "system = 'emscripten'" \
+    "cpu_family = 'wasm32'" \
+    "cpu = 'wasm32'" \
+    "endian = 'little'" \
+    '' \
+    '[binaries]' \
+    "c = ['bash', '/emcc-meson-wrap.sh', 'emcc']" \
+    "cpp = ['bash', '/emcc-meson-wrap.sh', 'em++']" \
+    "ar = 'emar'" \
+    "ranlib = 'emranlib'" \
+    "pkgconfig = ['pkg-config', '--static']" \
+    >/cross.meson
+RUN meson setup _build --prefix="$TARGET" --cross-file=/cross.meson \
+      --default-library=static --buildtype=release --force-fallback-for=pcre2,gvdb \
+      -Dselinux=disabled -Dxattr=false -Dlibmount=disabled -Dnls=disabled \
+      -Dtests=false -Dglib_assert=false -Dglib_checks=false \
+    && sed -i -E '/#define HAVE_(CLOSE_RANGE|EPOLL_CREATE|KQUEUE|POSIX_SPAWN|FALLOCATE) 1/d' _build/config.h \
+    && meson install -C _build
+
+FROM base
+COPY --from=glib /build/ /build/
+WORKDIR /build
+CMD ["sleep", "infinity"]