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Add WASI platform support.

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This includes the following significant changes:
  * Patching ezsat and minisat to disable resource limiting code
    on WASM/WASI, since the POSIX functions they use are unavailable.
  * Adding a new definition, YOSYS_DISABLE_SPAWN, present if platform
    does not support spawning subprocesses (i.e. Emscripten or WASI).
    This definition hides the definition of `run_command()`.
  * Adding a new Makefile flag, DISABLE_SPAWN, present in the same
    condition. This flag disables all passes that require spawning
    subprocesses for their function.
This commit is contained in:
whitequark 2019-11-11 09:23:06 +00:00
parent bc380b0b56
commit b43c282e4e
17 changed files with 167 additions and 30 deletions
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50
Makefile
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@ -4,6 +4,7 @@ CONFIG := clang
# CONFIG := gcc-4.8
# CONFIG := afl-gcc
# CONFIG := emcc
# CONFIG := wasi
# CONFIG := mxe
# CONFIG := msys2
# CONFIG := msys2-64
@ -32,7 +33,9 @@ ENABLE_NDEBUG := 0
LINK_CURSES := 0
LINK_TERMCAP := 0
LINK_ABC := 0
# Needed for environments that don't have proper thread support (i.e. emscripten)
# Needed for environments that can't run executables (i.e. emscripten, wasm)
DISABLE_SPAWN := 0
# Needed for environments that don't have proper thread support (i.e. emscripten, wasm--for now)
DISABLE_ABC_THREADS := 0
# clang sanitizers
@ -42,7 +45,7 @@ SANITIZER =
# SANITIZER = undefined
# SANITIZER = cfi
PROGRAM_PREFIX :=
PROGRAM_PREFIX :=
OS := $(shell uname -s)
PREFIX ?= /usr/local
@ -253,6 +256,8 @@ LDFLAGS += $(EMCCFLAGS)
LDLIBS =
EXE = .js
DISABLE_SPAWN := 1
TARGETS := $(filter-out $(PROGRAM_PREFIX)yosys-config,$(TARGETS))
EXTRA_TARGETS += yosysjs-$(YOSYS_VER).zip
@ -274,6 +279,35 @@ yosysjs-$(YOSYS_VER).zip: yosys.js yosys.wasm viz.js misc/yosysjs/*
yosys.html: misc/yosys.html
$(P) cp misc/yosys.html yosys.html
else ifeq ($(CONFIG),wasi)
ifeq ($(WASI_SDK),)
CXX = clang++
LD = clang++
AR = llvm-ar
RANLIB = llvm-ranlib
WASIFLAGS := -target wasm32-wasi --sysroot $(WASI_SYSROOT) $(WASIFLAGS)
else
CXX = $(WASI_SDK)/bin/clang++
LD = $(WASI_SDK)/bin/clang++
AR = $(WASI_SDK)/bin/ar
RANLIB = $(WASI_SDK)/bin/ranlib
WASIFLAGS := --sysroot $(WASI_SDK)/share/wasi-sysroot $(WASIFLAGS)
endif
CXXFLAGS := $(WASIFLAGS) -std=c++11 -Os $(filter-out -fPIC,$(CXXFLAGS))
LDFLAGS := $(WASIFLAGS) -Wl,-z,stack-size=1048576 $(filter-out -rdynamic,$(LDFLAGS))
LDLIBS := $(filter-out -lrt,$(LDLIBS))
ABCMKARGS += AR="$(AR)" RANLIB="$(RANLIB)"
ABCMKARGS += ARCHFLAGS="$(WASIFLAGS) -DABC_USE_STDINT_H -DABC_NO_DYNAMIC_LINKING"
ABCMKARGS += OPTFLAGS="-Os"
EXE = .wasm
DISABLE_SPAWN := 1
ifeq ($(ENABLE_ABC),1)
LINK_ABC := 1
DISABLE_ABC_THREADS := 1
endif
else ifeq ($(CONFIG),mxe)
PKG_CONFIG = /usr/local/src/mxe/usr/bin/i686-w64-mingw32.static-pkg-config
CXX = /usr/local/src/mxe/usr/bin/i686-w64-mingw32.static-g++
@ -396,6 +430,10 @@ ifeq ($(DISABLE_ABC_THREADS),1)
ABCMKARGS += "ABC_USE_NO_PTHREADS=1"
endif
ifeq ($(DISABLE_SPAWN),1)
CXXFLAGS += -DYOSYS_DISABLE_SPAWN
endif
ifeq ($(ENABLE_PLUGINS),1)
CXXFLAGS += $(shell PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) $(PKG_CONFIG) --silence-errors --cflags libffi) -DYOSYS_ENABLE_PLUGINS
LDLIBS += $(shell PKG_CONFIG_PATH=$(PKG_CONFIG_PATH) $(PKG_CONFIG) --silence-errors --libs libffi || echo -lffi)
@ -911,6 +949,14 @@ config-emcc: clean
echo 'ENABLE_READLINE := 0' >> Makefile.conf
echo 'ENABLE_ZLIB := 0' >> Makefile.conf
config-wasi: clean
echo 'CONFIG := wasi' > Makefile.conf
echo 'ENABLE_TCL := 0' >> Makefile.conf
echo 'ENABLE_ABC := 0' >> Makefile.conf
echo 'ENABLE_PLUGINS := 0' >> Makefile.conf
echo 'ENABLE_READLINE := 0' >> Makefile.conf
echo 'ENABLE_ZLIB := 0' >> Makefile.conf
config-mxe: clean
echo 'CONFIG := mxe' > Makefile.conf
echo 'ENABLE_PLUGINS := 0' >> Makefile.conf