polkawasm: remove _start export. remove wasm-libc allocation functions

LimeChain · Dec 1, 2023 · dac6696 · dac6696
1 parent 5289c67
commit dac6696
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Showing 3 changed files with 11 additions and 14 deletions.
diff --git a/src/runtime/arch_tinygowasm_malloc.go b/src/runtime/arch_tinygowasm_malloc.go
@@ -1,4 +1,4 @@
-//go:build tinygo.wasm && !custommalloc
+//go:build tinygo.wasm && !custommalloc && !polkawasm
 
 package runtime
 

diff --git a/src/runtime/runtime_polkawasm.go b/src/runtime/runtime_polkawasm.go
@@ -2,17 +2,13 @@
 
 package runtime
 
-import (
-	"unsafe"
-)
-
-//export _start
-func _start() {
-	// These need to be initialized early so that the heap can be initialized.
-	heapStart = uintptr(unsafe.Pointer(&heapStartSymbol))
-	heapEnd = uintptr(wasm_memory_size(0) * wasmPageSize)
-	run()
-}
+// //export _start
+// func _start() {
+// 	// These need to be initialized early so that the heap can be initialized.
+// 	heapStart = uintptr(unsafe.Pointer(&heapStartSymbol))
+// 	heapEnd = uintptr(wasm_memory_size(0) * wasmPageSize)
+// 	run()
+// }
 
 // Abort executes the wasm 'unreachable' instruction.
 func abort() {

diff --git a/targets/polkawasm.json b/targets/polkawasm.json
@@ -23,11 +23,12 @@
 		"--allow-undefined",
 		"--export=__heap_base",
 		"--export=__data_end",
-		"--export-table"
+		"--export-table",
+		"--no-entry"
 	],
 	"extra-files": [
 		"src/runtime/asm_tinygowasm.S"
 	],
-	"emulator": "wasmtime {}",
+	"emulator": "wasmtime --mapdir=/tmp::{tmpDir} {}",
 	"wasm-abi": "generic"
 }