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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
kernel/register.cc
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@ -238,6 +238,7 @@ void Pass::call(RTLIL::Design *design, std::string command)
return;
if (tok[0] == '!') {
#if !defined(YOSYS_DISABLE_SPAWN)
cmd_buf = command.substr(command.find('!') + 1);
while (!cmd_buf.empty() && (cmd_buf.back() == ' ' || cmd_buf.back() == '\t' ||
cmd_buf.back() == '\r' || cmd_buf.back() == '\n'))
@ -247,6 +248,9 @@ void Pass::call(RTLIL::Design *design, std::string command)
if (retCode != 0)
log_cmd_error("Shell command returned error code %d.\n", retCode);
return;
#else
log_cmd_error("Shell is not available.\n");
#endif
}
while (!tok.empty()) {