From aec48ce3f0c31716e2bf8adad39f2b171e3b1947 Mon Sep 17 00:00:00 2001
From: Dennis Ranke <dennis.ranke@gmail.com>
Date: Thu, 30 Mar 2023 00:12:46 +0200
Subject: [PATCH] implement trampoline

---
 main.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/main.c b/main.c
index c36aa6e..4deff30 100644
--- a/main.c
+++ b/main.c
@@ -68,7 +68,18 @@ void linkSystemFunctions(IM3Runtime runtime, IM3Module mod) {
 }
 
 m3ApiRawFunction(platformTrampoline) {
-  fprintf(stderr, "Trampoline not yet implemented\n");
+  IM3Function func = (IM3Function)_ctx->userdata;
+  uint32_t retCount = m3_GetRetCount(func);
+  uint32_t argCount = m3_GetArgCount(func);
+  const void* args[16];
+  for(uint32_t i = 0; i < argCount; ++i) {
+    args[i] = &_sp[retCount + i];
+  }
+  verifyM3(runtime, m3_Call(func, m3_GetArgCount(func), args));
+  for(uint32_t i = 0; i < retCount; ++i) {
+    args[i] = &_sp[i];
+  }
+  verifyM3(runtime, m3_GetResults(func, retCount, args));
   m3ApiSuccess();
 }