From 8d45f81046a159df38e20b00cf0d74b1bb02a073 Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Sun, 15 Feb 2015 17:14:09 +0100
Subject: [PATCH] More emcc stuff

---
 Makefile        |  5 ++++-
 kernel/yosys.cc | 13 ++++++++++---
 misc/yosys.html | 38 +++++++++++++++++++++++++-------------
 3 files changed, 39 insertions(+), 17 deletions(-)

diff --git a/Makefile b/Makefile
index 775fce1ad..c762bd38c 100644
--- a/Makefile
+++ b/Makefile
@@ -95,10 +95,11 @@ CXXFLAGS += -std=gnu++0x -Os
 
 else ifeq ($(CONFIG),emcc)
 CXX = emcc
-CXXFLAGS := -std=c++11 $(filter-out -fPIC,$(filter-out -ggdb,$(CXXFLAGS)))
+CXXFLAGS := -std=c++11 $(filter-out -fPIC -ggdb,$(CXXFLAGS))
 EMCCFLAGS := -Os -Wno-warn-absolute-paths
 EMCCFLAGS += --memory-init-file 0 -s NO_EXIT_RUNTIME=1
 EMCCFLAGS += -s EXPORTED_FUNCTIONS="['_main','_run','_prompt']"
+EMCCFLAGS += --embed-file share
 # https://github.com/kripken/emscripten/blob/master/src/settings.js
 # EMCCFLAGS += -s ALLOW_MEMORY_GROWTH=1
 # EMCCFLAGS += -s DISABLE_EXCEPTION_CATCHING=0
@@ -111,7 +112,9 @@ LDFLAGS += $(EMCCFLAGS)
 LDLIBS =
 EXE = .js
 
+TARGETS := $(filter-out yosys-config,$(TARGETS))
 EXTRA_TARGETS += yosys.html
+
 yosys.html: misc/yosys.html
 	$(P) cp misc/yosys.html yosys.html
 
diff --git a/kernel/yosys.cc b/kernel/yosys.cc
index 530d78796..b54836621 100644
--- a/kernel/yosys.cc
+++ b/kernel/yosys.cc
@@ -619,26 +619,33 @@ std::string proc_self_dirname()
 	#error Dont know how to determine process executable base path!
 #endif
 
+#ifdef EMSCRIPTEN
+std::string proc_share_dirname()
+{
+	return "/share";
+}
+#else
 std::string proc_share_dirname()
 {
 	std::string proc_self_path = proc_self_dirname();
-#ifdef _WIN32
+#  ifdef _WIN32
 	std::string proc_share_path = proc_self_path + "share\\";
 	if (check_file_exists(proc_share_path, true))
 		return proc_share_path;
 	proc_share_path = proc_self_path + "..\\share\\";
 	if (check_file_exists(proc_share_path, true))
 		return proc_share_path;
-#else
+#  else
 	std::string proc_share_path = proc_self_path + "share/";
 	if (check_file_exists(proc_share_path, true))
 		return proc_share_path;
 	proc_share_path = proc_self_path + "../share/yosys/";
 	if (check_file_exists(proc_share_path, true))
 		return proc_share_path;
-#endif
+#  endif
 	log_error("proc_share_dirname: unable to determine share/ directory!\n");
 }
+#endif
 
 bool fgetline(FILE *f, std::string &buffer)
 {
diff --git a/misc/yosys.html b/misc/yosys.html
index 929d0dd3b..29d89e6fe 100644
--- a/misc/yosys.html
+++ b/misc/yosys.html
@@ -4,18 +4,18 @@
 	<h1>yosys.js example application</h1>
 	<div><textarea id="output" style="width: 100%" rows="30" cols="100"></textarea></div>
 	<div id="wait" style="display: block"><br/><b><span id="waitmsg">Loading...</span></b></div>
-	<div id="input" style="display: none"><form onsubmit="return run_command()"><tt><span id="prompt"><br/>yosys&gt; </span></tt><input id="command" type="text" size="100"></form></div>
+	<div id="input" style="display: none"><form onsubmit="window.setTimeout(run_command); return false"><tt><span id="prompt">
+			</span></tt><input id="command" type="text" style="font-family: monospace; font-weight: bold;" size="100"></form></div>
 	<script type='text/javascript'>
 		var got_log_messages = false;
+
 		var Module = {
 			print: (function() {
 				var element = document.getElementById('output');
 				if (element) element.value = ''; // clear browser cache
 				return function(text) {
 					if (!got_log_messages) {
-						document.getElementById('wait').style.display = 'none';
-						document.getElementById('input').style.display = 'block';
-						document.getElementById('waitmsg').innerText = 'Waiting for yosys.js...';
+						window.setTimeout(startup, 50);
 						got_log_messages = true;
 					}
 					if (element && typeof(text) != "number") {
@@ -37,30 +37,42 @@
 					}
 				};
 			})(),
-			command: (function(cmd) {
-				Module.ccall('run', '', ['string'], [cmd])
-			}),
-			prompt: (function(cmd) {
-				return Module.ccall('prompt', 'string', [], [])
-			})
 		};
+
+		function startup() {
+			document.getElementById('wait').style.display = 'none';
+			document.getElementById('input').style.display = 'block';
+			document.getElementById('waitmsg').innerText = 'Waiting for yosys.js...';
+			document.getElementById('prompt').innerText = yosys_prompt();
+			document.getElementById('command').focus();
+			console.log('yosys.js loaded.');
+		}
+
+		function yosys_command(cmd) {
+			Module.ccall('run', '', ['string'], [cmd])
+		}
+
+		function yosys_prompt() {
+			return Module.ccall('prompt', 'string', [], [])
+		}
+
 		function run_command() {
 			var cmd = document.getElementById('command').value;
 			document.getElementById('command').value = '';
-			Module.print(Module.prompt() + cmd);
+			Module.print(yosys_prompt() + cmd);
 			document.getElementById('wait').style.display = 'block';
 			document.getElementById('input').style.display = 'none';
 
 			function run_command_bh() {
 				try {
-					Module.command(cmd);
+					yosys_command(cmd);
 				} catch (e) {
 					Module.print('Caught JavaScript exception. (see JavaScript console for details.)');
 					console.log(e);
 				}
 				document.getElementById('wait').style.display = 'none';
 				document.getElementById('input').style.display = 'block';
-				document.getElementById('prompt').innerText = Module.prompt();
+				document.getElementById('prompt').innerText = yosys_prompt();
 				document.getElementById('command').focus();
 			}
 
-- 
2.30.2