feat: add libdriver

mock: components can be compiled natively:
1. make mock tests

ioctl: require the cartesi headers and a riscv compiler:
1. Build or download a compatible kernel and `.deb` headers
2. Setup a cross compilation debian environment by running the setup[1]
   script.
3. `make ioctl CROSS_COMPILE=riscv64-linux-gnu-`

[1] setup.sh
```
apt update && \
DEBIAN_FRONTEND="noninteractive" apt-get install --no-install-recommends --allow-downgrades -y \
  bc \
  bison \
  build-essential \
  flex \
  genext2fs \
  rsync \
  gcc-riscv64-linux-gnu \
  libc6-dev-riscv64-cross \
  ./linux-libc-dev-riscv64-cross-6.5.9-ctsi-1-v0.0.0.deb
```

Dockerfile

@@ -48,6 +48,10 @@ RUN mkdir -p ${BUILD_BASE}linux-sources && \
 # copy tools
 COPY linux/ ${BUILD_BASE}tools/linux/
 
+# build C/C++ libs
+# ------------------------------------------------------------------------------
+RUN make -C ${BUILD_BASE}tools/linux/libdriver/ CROSS_COMPILE=""
+
 # build C/C++ tools
 # ------------------------------------------------------------------------------
 RUN make -C ${BUILD_BASE}tools/linux/xhalt/ CROSS_COMPILE="" xhalt.toolchain

Makefile

@@ -25,9 +25,9 @@ MACHINE_EMULATOR_TOOLS_TAR_GZ  := machine-emulator-tools-$(MACHINE_EMULATOR_TOOL
 MACHINE_EMULATOR_TOOLS_DEB     := machine-emulator-tools-$(MACHINE_EMULATOR_TOOLS_VERSION).deb
 MACHINE_EMULATOR_TOOLS_IMAGE   := cartesi/machine-emulator-tools:$(MACHINE_EMULATOR_TOOLS_VERSION)
 
-LINUX_SOURCES_VERSION  ?= 5.15.63-ctsi-2
-LINUX_SOURCES_FILEPATH := dep/linux-$(LINUX_SOURCES_VERSION).tar.gz
-LINUX_SOURCES_URLPATH  := https://github.com/cartesi/linux/archive/refs/tags/v$(LINUX_SOURCES_VERSION).tar.gz
+LINUX_SOURCES_VERSION  ?= rollup-rework
+LINUX_SOURCES_FILEPATH := dep/$(LINUX_SOURCES_VERSION).tar.gz
+LINUX_SOURCES_URLPATH  := https://github.com/cartesi/linux/archive/refs/heads/feature/$(LINUX_SOURCES_VERSION).tar.gz
 
 RNDADDENTROPY_VERSION  ?= 3.0.0
 RNDADDENTROPY_FILEPATH := dep/twuewand-$(RNDADDENTROPY_VERSION).tar.gz

linux/htif/Makefile

@@ -27,7 +27,8 @@ RVCXX = $(CROSS_COMPILE)g++
 RVCOPY = $(CROSS_COMPILE)objcopy
 RVDUMP = $(CROSS_COMPILE)objdump
 STRIP = $(CROSS_COMPILE)strip
-RISCV_CFLAGS :=-march=$(RISCV_ARCH) -mabi=$(RISCV_ABI)
+CFLAGS := -O2 -Wall -pedantic -march=$(RISCV_ARCH) -mabi=$(RISCV_ABI) -I../libdriver/ioctl
+LDLIBS := -L../libdriver -ldriver
 
 CONTAINER_MAKE := /usr/bin/make
 CONTAINER_BASE := /opt/cartesi/tools
@@ -42,7 +43,7 @@ extra.ext2: yield
 	$(MAKE) toolchain-exec CONTAINER_COMMAND="$(CONTAINER_MAKE) $@.toolchain"
 
 yield.toolchain:
-	$(RVCC) -O2 -o yield yield.c
+	$(RVCC) $(CFLAGS) -o yield yield.c $(LDLIBS)
 	$(STRIP) yield
 
 extra.ext2.toolchain:

linux/libcmt/.gitignore

@@ -0,0 +1,8 @@
+build/
+doc/theme
+doc/html
+*.o
+*.d
+
+tools/funsel
+tools/merkle-table

linux/libcmt/Makefile

@@ -0,0 +1,179 @@
+# paths
+PREFIX = /usr
+TARGET_PREFIX ?= $(PREFIX)
+
+TARGET_CC := $(CROSS_COMPILE)gcc
+TARGET_AR := $(CROSS_COMPILE)ar
+TARGET_CFLAGS := -Wvla -O2 -g -Wall -pedantic -Wextra -Iinclude -Iinclude/libcmt/ioctl
+CFLAGS := -Wvla -O2 -g -Wall -pedantic -Wextra -fsanitize=address,undefined -Iinclude -Iinclude/libcmt/mock
+
+mock_BINS :=  build/libcmt_mock/yield-driver \
+              build/libcmt_mock/rollup-driver \
+              build/libcmt_mock/rollup \
+              build/libcmt_mock/merkle-state \
+              libcmt_mock.a
+
+ioctl_BINS := build/libcmt/yield-driver \
+              build/libcmt/rollup-driver \
+              build/libcmt/rollup \
+              libcmt.a
+
+tests_BINS := build/libcmt_mock/abi \
+              build/libcmt_mock/keccak \
+              build/libcmt_mock/merkle
+
+tools_BINS := tools/funsel \
+              tools/merkle-table
+
+all: mock.build ioctl.build tools.build examples.build
+help:
+	@echo "Cleaning targets: (default: '*')"
+	@echo "  clean          - remove the binaries and objects."
+	@echo "* mock.build     - build the reference mock library and examples for running in host mode."
+	@echo "  mock.install   - install the reference mock library."
+	@echo "* ioctl.build    - build the riscv ioctl library and examples."
+	@echo "                   (needs the cartesi linux headers. accepts the 'CROSS_COMPILE=' variable)"
+	@echo "  ioctl.install  - install the riscv ioctl library."
+	@echo "  tests.build    - build host mode tests."
+	@echo "  tests.run      - run host mode tests."
+	@echo "* tools.build    - development tools and utilities."
+	@echo "  doc.build      - build the doxygen documentation."
+	@echo "  examples.build - build the documentation code."
+
+base_SRC := \
+	src/buf.c \
+	src/abi.c \
+	src/keccak.c \
+	src/merkle.c \
+	src/rollup.c \
+	src/merkle-table.c
+
+libcmt_mock_SRC := \
+	src/mock/rollup-driver.c \
+	src/mock/yield-driver.c \
+	$(base_SRC)
+
+libcmt_SRC := \
+	src/ioctl/rollup-driver.c \
+	src/ioctl/yield-driver.c \
+	$(base_SRC)
+
+examples_SRC := \
+	examples/abi_decode_000.c \
+	examples/abi_decode_001.c \
+	examples/abi_encode_000.c \
+	examples/abi_encode_001.c \
+	examples/abi_encode_002.c \
+	examples/abi_get.c \
+	examples/abi_multi.c \
+	examples/rollup-driver.c \
+	examples/rollup.c \
+	examples/yield-driver.c
+
+libcmt_mock_OBJDIR  := build/libcmt_mock/
+libcmt_OBJDIR := build/libcmt/
+examples_OBJDIR := build/examples/
+
+libcmt_mock_OBJ  := $(patsubst %.c,$(libcmt_mock_OBJDIR)%.o,$(libcmt_mock_SRC))
+libcmt_OBJ := $(patsubst %.c,$(libcmt_OBJDIR)%.o,$(libcmt_SRC))
+examples_OBJ := $(patsubst %.c,$(examples_OBJDIR)%.o,$(examples_SRC))
+
+OBJ := $(libcmt_mock_OBJ) $(libcmt_OBJ) $(examples_OBJ)
+
+mock.build:  libcmt_mock.a $(mock_BINS)
+ioctl.build: libcmt.a $(ioctl_BINS)
+tests.build: $(tests_BINS)
+tools.build: $(tools_BINS)
+tests.run: tests.build
+	$(foreach test,$(tests_BINS),$(test) &&) true
+examples.build: $(examples_OBJ)
+
+$(libcmt_mock_OBJ): $(libcmt_mock_OBJDIR)%.o: %.c
+	@mkdir -p $(@D)
+	$(CC) $(CFLAGS) -MT $@ -MMD -MP -MF $(@:.o=.d) -c -o $@ $<
+
+$(libcmt_OBJ): $(libcmt_OBJDIR)%.o: %.c
+	@mkdir -p $(@D)
+	$(TARGET_CC) $(TARGET_CFLAGS) -MT $@ -MMD -MP -MF $(@:.o=.d) -c -o $@ $<
+
+$(examples_OBJ): $(examples_OBJDIR)%.o: %.c
+	@mkdir -p $(@D)
+	$(CC) $(CFLAGS) -MT $@ -MMD -MP -MF $(@:.o=.d) -c -o $@ $<
+
+libcmt_mock.a: $(libcmt_mock_OBJ)
+	$(AR) rcs $@ $^
+
+libcmt.a: $(libcmt_OBJ)
+	$(TARGET_AR) rcs $@ $^
+
+build/libcmt/yield-driver: examples/yield-driver.c libcmt.a
+	$(TARGET_CC) $(TARGET_CFLAGS) -o $@ $^
+build/libcmt/rollup-driver: examples/rollup-driver.c libcmt.a
+	$(TARGET_CC) $(TARGET_CFLAGS) -o $@ $^
+build/libcmt/rollup: examples/rollup.c libcmt.a
+	$(TARGET_CC) $(TARGET_CFLAGS) -o $@ $^
+
+build/libcmt_mock/yield-driver: examples/yield-driver.c libcmt_mock.a
+	$(CC) $(CFLAGS) -o $@ $^
+build/libcmt_mock/rollup-driver: examples/rollup-driver.c libcmt_mock.a
+	$(CC) $(CFLAGS) -o $@ $^
+build/libcmt_mock/rollup: examples/rollup.c libcmt_mock.a
+	$(CC) $(CFLAGS) -o $@ $^
+build/libcmt_mock/merkle-state: examples/merkle-state.c libcmt_mock.a
+	$(CC) $(CFLAGS) -o $@ $^
+
+build/libcmt_mock/abi: tests/abi.c libcmt_mock.a
+	$(CC) $(CFLAGS) -o $@ $^
+build/libcmt_mock/keccak: tests/keccak.c libcmt_mock.a
+	$(CC) $(CFLAGS) -o $@ $^
+build/libcmt_mock/merkle: tests/merkle.c libcmt_mock.a
+	$(CC) $(CFLAGS) -o $@ $^
+
+src/merkle.c: src/merkle-table.c
+src/merkle-table.c: tools/merkle-table
+	$< > $@
+
+tools/merkle-table: tools/merkle-table.c src/keccak.c
+	$(CC) $(CFLAGS) -o $@ $^
+tools/funsel: tools/funsel.c src/keccak.c
+	$(CC) $(CFLAGS) -o $@ $^
+
+doc/theme:
+	git clone [email protected]:jothepro/doxygen-awesome-css.git $@
+	git -C doc/theme checkout 8cea9a073ecd50a5b2c0958a3df100292d6c7374
+
+doc.build: examples.build doc/theme
+	doxygen doc/Doxyfile
+
+ioctl.install: libcmt.a
+	mkdir -p $(TARGET_DESTDIR)$(TARGET_PREFIX)/lib
+	cp -f $< $(TARGET_DESTDIR)$(TARGET_PREFIX)/lib
+	mkdir -p $(TARGET_DESTDIR)$(TARGET_PREFIX)/include/libcmt/
+	cp -f include/libcmt/*.h $(TARGET_DESTDIR)$(TARGET_PREFIX)/include/libcmt/
+	cp -f include/libcmt/ioctl/*.h $(TARGET_DESTDIR)$(TARGET_PREFIX)/include/libcmt/
+	mkdir -p $(TARGET_DESTDIR)$(TARGET_PREFIX)/lib/pkgconfig
+	sed 's|ARG_PREFIX|$(TARGET_PREFIX)|g' tools/templates/libcmt.pc \
+		> $(TARGET_DESTDIR)$(TARGET_PREFIX)/lib/pkgconfig/libcmt.pc
+
+mock.install: libcmt_mock.a
+	mkdir -p $(DESTDIR)$(PREFIX)/lib
+	cp -f $< $(DESTDIR)$(PREFIX)/lib
+	mkdir -p $(DESTDIR)$(PREFIX)/include/libcmt/mock
+	cp -f include/libcmt/*.h $(DESTDIR)$(PREFIX)/include/libcmt/
+	cp -f include/libcmt/mock/*.h $(DESTDIR)$(PREFIX)/include/libcmt/mock/
+	mkdir -p $(DESTDIR)$(PREFIX)/lib/pkgconfig
+	sed 's|ARG_PREFIX|$(PREFIX)|g' tools/templates/libcmt_mock.pc \
+		> $(DESTDIR)$(PREFIX)/lib/pkgconfig/libcmt_mock.pc
+
+doc.install: doc.build
+	mkdir -p $(DESTDIR)$(PREFIX)/share/libcmt/html
+	cp -f doc/html $(DESTDIR)$(PREFIX)/share/libcmt/html
+
+clean:
+	rm -f $(mock_BINS) $(ioctl_BINS) $(tests_BINS) $(tools_BINS) $(OBJ) $(OBJ:%.o=%.d)
+	rm -rf doc/html
+distclean:
+	rm -rf doc/theme
+.PHONY: examples.build doc
+
+-include $(OBJ:%.o=%.d)

linux/libcmt/README.md

@@ -0,0 +1,19 @@
+High level rollup API
+
+- @ref libcmt\_rollup
+
+Utility functions for rollup interaction.
+
+- @ref libcmt\_abi
+- @ref libcmt\_buf
+- @ref libcmt\_keccak
+- @ref libcmt\_merkle
+
+Thin wrappers to the cartesi kernel drivers
+
+- @ref rollup\_driver
+- @ref yield\_driver
+
+# Getting Started
+
+Download the static library from [cartesi tools](https://github.com/cartesi/machine-emulator-tools/).