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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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2
passes/techmap/Makefile.inc
View file

@ -57,7 +57,7 @@ passes/techmap/techmap.inc: techlibs/common/techmap.v
passes/techmap/techmap.o: passes/techmap/techmap.inc
ifneq ($(CONFIG),emcc)
ifeq ($(DISABLE_SPAWN),0)
TARGETS += $(PROGRAM_PREFIX)yosys-filterlib$(EXE)
EXTRA_OBJS += passes/techmap/filterlib.o

11
passes/techmap/abc.cc
View file

@ -771,7 +771,10 @@ void abc_module(RTLIL::Design *design, RTLIL::Module *current_module, std::strin
if (abc_script[i] == ';' && abc_script[i+1] == ' ')
abc_script[i+1] = '\n';
FILE *f = fopen(stringf("%s/abc.script", tempdir_name.c_str()).c_str(), "wt");
std::string buffer = stringf("%s/abc.script", tempdir_name.c_str());
FILE *f = fopen(buffer.c_str(), "wt");
if (f == nullptr)
log_error("Opening %s for writing failed: %s\n", buffer.c_str(), strerror(errno));
fprintf(f, "%s\n", abc_script.c_str());
fclose(f);
@ -807,7 +810,7 @@ void abc_module(RTLIL::Design *design, RTLIL::Module *current_module, std::strin
handle_loops();
std::string buffer = stringf("%s/input.blif", tempdir_name.c_str());
buffer = stringf("%s/input.blif", tempdir_name.c_str());
f = fopen(buffer.c_str(), "wt");
if (f == nullptr)
log_error("Opening %s for writing failed: %s\n", buffer.c_str(), strerror(errno));
@ -1541,11 +1544,15 @@ struct AbcPass : public Pass {
size_t argidx, g_argidx;
bool g_arg_from_cmd = false;
#if defined(__wasm)
const char *pwd = ".";
#else
char pwd [PATH_MAX];
if (!getcwd(pwd, sizeof(pwd))) {
log_cmd_error("getcwd failed: %s\n", strerror(errno));
log_abort();
}
#endif
for (argidx = 1; argidx < args.size(); argidx++) {
std::string arg = args[argidx];
if (arg == "-exe" && argidx+1 < args.size()) {

4
passes/techmap/abc9_exe.cc
View file

@ -420,11 +420,15 @@ struct Abc9ExePass : public Pass {
}
size_t argidx;
#if defined(__wasm)
const char *pwd = ".";
#else
char pwd [PATH_MAX];
if (!getcwd(pwd, sizeof(pwd))) {
log_cmd_error("getcwd failed: %s\n", strerror(errno));
log_abort();
}
#endif
for (argidx = 1; argidx < args.size(); argidx++) {
std::string arg = args[argidx];
if (arg == "-exe" && argidx+1 < args.size()) {