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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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27
kernel/yosys.cc
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@ -45,8 +45,10 @@
# include <unistd.h>
# include <dirent.h>
# include <sys/types.h>
# include <sys/wait.h>
# include <sys/stat.h>
# if !defined(YOSYS_DISABLE_SPAWN)
# include <sys/wait.h>
# endif
#endif
#if !defined(_WIN32) && defined(YOSYS_ENABLE_GLOB)
@ -336,16 +338,13 @@ bool patmatch(const char *pattern, const char *string)
return false;
}
#if !defined(YOSYS_DISABLE_SPAWN)
int run_command(const std::string &command, std::function<void(const std::string&)> process_line)
{
if (!process_line)
return system(command.c_str());
#ifdef EMSCRIPTEN
FILE *f = nullptr;
#else
FILE *f = popen(command.c_str(), "r");
#endif
if (f == nullptr)
return -1;
@ -368,10 +367,16 @@ int run_command(const std::string &command, std::function<void(const std::string
return WEXITSTATUS(ret);
#endif
}
#endif
std::string make_temp_file(std::string template_str)
{
#ifdef _WIN32
#if defined(__wasm)
size_t pos = template_str.rfind("XXXXXX");
log_assert(pos != std::string::npos);
static size_t index = 0;
template_str.replace(pos, 6, stringf("%06zu", index++));
#elif defined(_WIN32)
if (template_str.rfind("/tmp/", 0) == 0) {
# ifdef __MINGW32__
char longpath[MAX_PATH + 1];
@ -420,10 +425,14 @@ std::string make_temp_file(std::string template_str)
std::string make_temp_dir(std::string template_str)
{
#ifdef _WIN32
#if defined(_WIN32)
template_str = make_temp_file(template_str);
mkdir(template_str.c_str());
return template_str;
#elif defined(__wasm)
template_str = make_temp_file(template_str);
mkdir(template_str.c_str(), 0777);
return template_str;
#else
# ifndef NDEBUG
size_t pos = template_str.rfind("XXXXXX");
@ -806,7 +815,7 @@ std::string proc_self_dirname()
path += char(shortpath[i]);
return path;
}
#elif defined(EMSCRIPTEN)
#elif defined(EMSCRIPTEN) || defined(__wasm)
std::string proc_self_dirname()
{
return "/";
@ -815,7 +824,7 @@ std::string proc_self_dirname()
#error "Don't know how to determine process executable base path!"
#endif
#ifdef EMSCRIPTEN
#if defined(EMSCRIPTEN) || defined(__wasm)
std::string proc_share_dirname()
{
return "/share/";