134c197dd4
Adds `examples/ffi-jni-call-02-void.sx` exercising `#jni_call(void) (env, target, "name", "sig")` inside an `inline if OS == .android` arm, plus a new tuple in `tests/cross_compile.sh`. Host run_examples passes (the inline-if strips the JNI body, leaving "skipped"); the Android cross-compile FAILs because `lowerFfiIntrinsicCall` still emits the placeholder diagnostic for any `fic.kind != .objc_call`. Per the FFI cadence rule this is a test-add (xfail); the next commit makes the Android cross-compile green by adding the `.jni_msg_send` opcode and its emit_llvm expansion.
50 lines
1.8 KiB
Plaintext
50 lines
1.8 KiB
Plaintext
// Phase 1 step 1.15 (PLAN-FFI.md): `#jni_call(void)` codegen.
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//
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// `#jni_call(T)(env, target, "method_name", "(Sig)RetSig", args...)`
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// dispatches a JNI instance-method call. The lowering hand-emits the
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// vtable indirection:
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//
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// ifs = *env // JNINativeInterface*
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// cls = ifs->GetObjectClass(env, target)
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// mid = ifs->GetMethodID(env, cls, name, sig)
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// ifs->Call<Type>Method(env, target, mid, args...)
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//
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// Phase 1.17 introduces method-ID caching via static slots populated
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// at module-init; this step keeps the per-call-site lookup.
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//
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// Host can't dlopen libjvm via the JIT, so the JNI body is gated
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// behind `inline if OS == .android`. The macOS test path strips the
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// body and prints "skipped"; the cross_compile.sh Android target
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// verifies that the gated body actually compiles + links against
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// libjvm in the Android sysroot.
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#import "modules/std.sx";
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#import "modules/compiler.sx";
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main :: () -> s32 {
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inline if OS == .android {
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// Real Android entry passes env + target via android_main /
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// ANativeActivity (modules/platform/android.sx). For the cross-
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// compile-only test we just need the lowering to emit valid
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// IR; runtime correctness is exercised by the chess
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// sx_android_query_safe_insets path once Phase 1D for
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// sx_android_jni.c lands.
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env : *void = null;
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target : *void = null;
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#jni_call(void)(env, target, "noop", "()V");
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}
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inline if OS != .android {
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print("skipped (not android)\n");
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}
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0;
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}
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// Android target requires `android_main` as the NDK entry — kept as
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// a 3-line trampoline so this example can pass through
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// `--target android` builds in `tests/cross_compile.sh`.
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android_main :: (app: *void) {
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inline if OS == .android {
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main();
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}
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}
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