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authorAlon Zakai <alonzakai@gmail.com>2012-11-29 15:05:41 -0800
committerAlon Zakai <alonzakai@gmail.com>2012-12-07 14:23:20 -0800
commite944bb4580c4105a6653bcba4c0832d85f389843 (patch)
treeaeab5a5779166d663ce524303342c78ccf76cc5c
parentdf5d5b01426005ef577f5e7ddd9754804e53613c (diff)
export global constructors from asm.js and get them dynamically in the outside scope
-rwxr-xr-xemscripten.py14
-rw-r--r--src/intertyper.js7
-rw-r--r--src/jsifier.js2
-rw-r--r--src/modules.js3
4 files changed, 19 insertions, 7 deletions
diff --git a/emscripten.py b/emscripten.py
index b4e289d9..d7531ad1 100755
--- a/emscripten.py
+++ b/emscripten.py
@@ -128,10 +128,12 @@ def emscript(infile, settings, outfile, libraries=[]):
# Save settings to a file to work around v8 issue 1579
settings_file = temp_files.get('.txt').name
- settings_text = json.dumps(settings)
- s = open(settings_file, 'w')
- s.write(settings_text)
- s.close()
+ def save_settings():
+ settings_text = json.dumps(settings)
+ s = open(settings_file, 'w')
+ s.write(settings_text)
+ s.close()
+ save_settings()
# Phase 1 - pre
if DEBUG: t = time.time()
@@ -169,6 +171,9 @@ def emscript(infile, settings, outfile, libraries=[]):
if DEBUG: t = time.time()
forwarded_json = json.loads(forwarded_data)
indexed_functions = set()
+ if settings.get('ASM_JS'):
+ settings['EXPORTED_FUNCTIONS'] = forwarded_json['EXPORTED_FUNCTIONS']
+ save_settings()
chunks = shared.JCache.chunkify(funcs, chunk_size, 'emscript_files' if jcache else None)
@@ -293,6 +298,7 @@ def emscript(infile, settings, outfile, libraries=[]):
exports.append("'%s': %s" % (export, export))
exports = '{ ' + ', '.join(exports) + ' }'
# calculate globals
+ del forwarded_json['Variables']['globals']['_llvm_global_ctors'] # not a true variable
global_vars = forwarded_json['Variables']['globals'].keys()
global_funcs = ['_' + x for x in forwarded_json['Functions']['libraryFunctions'].keys()]
asm_globals = ''.join([' var ' + g + '=env.' + g + ';\n' for g in basics + global_funcs + global_vars])
diff --git a/src/intertyper.js b/src/intertyper.js
index e727cc8b..f63e0982 100644
--- a/src/intertyper.js
+++ b/src/intertyper.js
@@ -521,7 +521,12 @@ function intertyper(data, sidePass, baseLineNums) {
if (item.tokens[3].item) {
var subTokens = item.tokens[3].item.tokens;
splitTokenList(subTokens).forEach(function(segment) {
- ret.ctors.push(segment[1].tokens.slice(-1)[0].text);
+ var ctor = toNiceIdent(segment[1].tokens.slice(-1)[0].text);
+ ret.ctors.push(ctor);
+ if (ASM_JS) { // must export the global constructors from asm.js module, so mark as implemented and exported
+ Functions.implementedFunctions[ctor] = 'v';
+ EXPORTED_FUNCTIONS[ctor] = 1;
+ }
});
}
} else if (!external) {
diff --git a/src/jsifier.js b/src/jsifier.js
index f6a3647b..aa18e269 100644
--- a/src/jsifier.js
+++ b/src/jsifier.js
@@ -260,7 +260,7 @@ function JSify(data, functionsOnly, givenFunctions) {
var ret = [item];
if (item.ident == '_llvm_global_ctors') {
item.JS = '\n__ATINIT__ = __ATINIT__.concat([\n' +
- item.ctors.map(function(ctor) { return ' { func: ' + toNiceIdent(ctor) + ' }' }).join(',\n') +
+ item.ctors.map(function(ctor) { return ' { func: function() { ' + ctor + '() } }' }).join(',\n') +
'\n]);\n';
return ret;
} else {
diff --git a/src/modules.js b/src/modules.js
index 15aaa568..d201ceae 100644
--- a/src/modules.js
+++ b/src/modules.js
@@ -348,7 +348,8 @@ var PassManager = {
print('\n//FORWARDED_DATA:' + JSON.stringify({
Types: Types,
Variables: Variables,
- Functions: Functions
+ Functions: Functions,
+ EXPORTED_FUNCTIONS: EXPORTED_FUNCTIONS // needed for asm.js global constructors (ctors)
}));
} else if (phase == 'funcs') {
print('\n//FORWARDED_DATA:' + JSON.stringify({