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capabilities to detect half/full runtime header

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dcode
2019-03-18 13:45:10 +01:00
parent ba4c00efbd
commit c147e98a55
6 changed files with 30 additions and 5 deletions
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22
src/compiler.ts
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@ -252,6 +252,16 @@ export const enum Feature {
THREADS = 1 << 4 // see: https://github.com/WebAssembly/threads
}
/** Indicates module capabilities. */
export const enum Capability {
/** No specific capabilities. */
NONE = 0,
/** Uses WebAssembly with 64-bit pointers. */
WASM64 = 1 << 0,
/** Garbage collector is present (full runtime header). */
GC = 1 << 1
}
/** Indicates the desired kind of a conversion. */
export const enum ConversionKind {
/** No conversion. */
@ -440,6 +450,14 @@ export class Compiler extends DiagnosticEmitter {
// set up gc
if (this.needsIterateRoots) compileIterateRoots(this);
// expose module capabilities
var capabilities = Capability.NONE;
if (program.options.isWasm64) capabilities |= Capability.WASM64;
if (program.gcImplemented) capabilities |= Capability.GC;
if (capabilities != 0) {
module.addGlobal(CompilerSymbols.capabilities, NativeType.I32, false, module.createI32(capabilities));
module.addGlobalExport(CompilerSymbols.capabilities, ".capabilities");
}
return module;
}
@ -5758,7 +5776,7 @@ export class Compiler extends DiagnosticEmitter {
module.createGetLocal(0, NativeType.I32)
)
);
module.addFunctionExport(internalName, "_setargc");
module.addFunctionExport(internalName, ".setargc");
}
return internalName;
}
@ -8088,4 +8106,6 @@ namespace CompilerSymbols {
export const argc = "~lib/argc";
/** Argument count setter. Exported for use by host calls. */
export const setargc = "~lib/setargc";
/** Module capabilities. Exported for evaluation by the host. */
export const capabilities = "~lib/capabilities";
}