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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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4
passes/techmap/abc9_exe.cc
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@ -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()) {