build: separate compiler and libs

compiler/internal/runtime/z_rt.go

@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package runtime
+
+import (
+	"unsafe"
+
+	"github.com/goplus/llgo/c"
+	"github.com/goplus/llgo/c/debug"
+	"github.com/goplus/llgo/c/pthread"
+	"github.com/goplus/llgo/c/signal"
+	"github.com/goplus/llgo/c/syscall"
+)
+
+// -----------------------------------------------------------------------------
+
+// Defer presents defer statements in a function.
+type Defer struct {
+	Addr unsafe.Pointer // sigjmpbuf
+	Bits uintptr
+	Link *Defer
+	Reth unsafe.Pointer // block address after Rethrow
+	Rund unsafe.Pointer // block address after RunDefers
+}
+
+// Recover recovers a panic.
+func Recover() (ret any) {
+	ptr := excepKey.Get()
+	if ptr != nil {
+		excepKey.Set(nil)
+		ret = *(*any)(ptr)
+		c.Free(ptr)
+	}
+	return
+}
+
+// Panic panics with a value.
+func Panic(v any) {
+	ptr := c.Malloc(unsafe.Sizeof(v))
+	*(*any)(ptr) = v
+	excepKey.Set(ptr)
+
+	Rethrow((*Defer)(c.GoDeferData()))
+}
+
+// Rethrow rethrows a panic.
+func Rethrow(link *Defer) {
+	if ptr := excepKey.Get(); ptr != nil {
+		if link == nil {
+			TracePanic(*(*any)(ptr))
+			debug.StackTrace(0, func(fr *debug.Frame) bool {
+				var info debug.Info
+				debug.Addrinfo(unsafe.Pointer(fr.PC), &info)
+				c.Fprintf(c.Stderr, c.Str("[0x%08X %s+0x%x, SP = 0x%x]\n"), fr.PC, fr.Name, fr.Offset, fr.SP)
+				return true
+			})
+
+			c.Free(ptr)
+			c.Exit(2)
+		} else {
+			c.Siglongjmp(link.Addr, 1)
+		}
+	}
+}
+
+var (
+	excepKey pthread.Key
+)
+
+func init() {
+	excepKey.Create(nil)
+}
+
+// -----------------------------------------------------------------------------
+
+// TracePanic prints panic message.
+func TracePanic(v any) {
+	print("panic: ")
+	printany(v)
+	println("\n")
+}
+
+/*
+func stringTracef(fp c.FilePtr, format *c.Char, s String) {
+	cs := c.Alloca(uintptr(s.len) + 1)
+	c.Fprintf(fp, format, CStrCopy(cs, s))
+}
+*/
+
+// -----------------------------------------------------------------------------
+
+// New allocates memory and initializes it to zero.
+func New(t *Type) unsafe.Pointer {
+	return AllocZ(t.Size_)
+}
+
+// NewArray allocates memory for an array and initializes it to zero.
+func NewArray(t *Type, n int) unsafe.Pointer {
+	return AllocZ(uintptr(n) * t.Size_)
+}
+
+// -----------------------------------------------------------------------------
+
+// TODO(xsw): check this
+// must match declarations in runtime/map.go.
+const MaxZero = 1024
+
+var ZeroVal [MaxZero]byte
+
+func init() {
+	signal.Signal(c.Int(syscall.SIGSEGV), func(v c.Int) {
+		switch syscall.Signal(v) {
+		case syscall.SIGSEGV:
+			panic(errorString("invalid memory address or nil pointer dereference"))
+		default:
+			var buf [20]byte
+			panic(errorString("unexpected signal value: " + string(itoa(buf[:], uint64(v)))))
+		}
+	})
+}
+
+// -----------------------------------------------------------------------------