diff --git a/compiler/symbol.go b/compiler/symbol.go
index 83bb4ccb2..37c987859 100644
--- a/compiler/symbol.go
+++ b/compiler/symbol.go
@@ -139,6 +139,8 @@ func (c *compilerContext) getFunction(fn *ssa.Function) (llvm.Type, llvm.Value)
 		// On *nix systems, the "abort" functuion in libc is used to handle fatal panics.
 		// Mark it as noreturn so LLVM can optimize away code.
 		llvmFn.AddFunctionAttr(c.ctx.CreateEnumAttribute(llvm.AttributeKindID("noreturn"), 0))
+	case "internal/abi.NoEscape":
+		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 	case "runtime.alloc":
 		// Tell the optimizer that runtime.alloc is an allocator, meaning that it
 		// returns values that are never null and never alias to an existing value.
diff --git a/loader/goroot.go b/loader/goroot.go
index 7325db5b4..09edab320 100644
--- a/loader/goroot.go
+++ b/loader/goroot.go
@@ -236,6 +236,7 @@ func pathsToOverride(goMinor int, needsSyscallPackage bool) map[string]bool {
 		"device/":               false,
 		"examples/":             false,
 		"internal/":             true,
+		"internal/abi/":         false,
 		"internal/binary/":      false,
 		"internal/bytealg/":     false,
 		"internal/cm/":          false,
diff --git a/src/internal/abi/abi.go b/src/internal/abi/abi.go
new file mode 100644
index 000000000..ee8e212a8
--- /dev/null
+++ b/src/internal/abi/abi.go
@@ -0,0 +1,2 @@
+// Package abi exposes low-level details of the Go compiler/runtime
+package abi
diff --git a/src/internal/abi/escape.go b/src/internal/abi/escape.go
new file mode 100644
index 000000000..0ecdf8030
--- /dev/null
+++ b/src/internal/abi/escape.go
@@ -0,0 +1,10 @@
+package abi
+
+import "unsafe"
+
+// Tell the compiler the given pointer doesn't escape.
+// The compiler knows about this function and will give the nocapture parameter
+// attribute.
+func NoEscape(p unsafe.Pointer) unsafe.Pointer {
+	return p
+}
diff --git a/src/internal/abi/funcpc.go b/src/internal/abi/funcpc.go
new file mode 100644
index 000000000..1f99b8095
--- /dev/null
+++ b/src/internal/abi/funcpc.go
@@ -0,0 +1,10 @@
+package abi
+
+// These two signatures are present to satisfy the expectation of some programs
+// (in particular internal/syscall/unix on MacOS). They do not currently have an
+// implementation, in part because TinyGo doesn't use ABI0 or ABIInternal (it
+// uses a C-like calling convention).
+
+func FuncPCABI0(f interface{}) uintptr
+
+func FuncPCABIInternal(f interface{}) uintptr