first pass at DATA sections

build/context.go

@@ -15,6 +15,7 @@ type Context struct {
 	pkg      *packages.Package
 	file     *avo.File
 	function *avo.Function
+	global   *avo.Global
 	errs     []error
 	reg.Collection
 }
@@ -47,7 +48,7 @@ func (c *Context) Package(path string) {
 
 func (c *Context) Function(name string) {
 	c.function = avo.NewFunction(name)
-	c.file.Sections = append(c.file.Sections, c.function)
+	c.file.AddSection(c.function)
 }
 
 func (c *Context) Signature(s *gotypes.Signature) {
@@ -92,6 +93,30 @@ func (c *Context) activefunc() *avo.Function {
 
 //go:generate avogen -output zinstructions.go build
 
+func (c *Context) StaticGlobal(name string) operand.Mem {
+	c.global = avo.NewStaticGlobal(name)
+	c.file.AddSection(c.global)
+	return c.global.Base()
+}
+
+func (c *Context) AddDatum(offset int, v operand.Constant) {
+	if err := c.activeglobal().AddDatum(avo.NewDatum(offset, v)); err != nil {
+		c.AddError(err)
+	}
+}
+
+func (c *Context) AppendDatum(v operand.Constant) {
+	c.activeglobal().Append(v)
+}
+
+func (c *Context) activeglobal() *avo.Global {
+	if c.global == nil {
+		c.AddErrorMessage("no active global")
+		return avo.NewStaticGlobal("")
+	}
+	return c.global
+}
+
 func (c *Context) AddError(err error) {
 	c.errs = append(c.errs, err)
 }

build/global.go

@@ -24,6 +24,14 @@ func TEXT(name, signature string) {
 
 func LABEL(name string) { ctx.Label(avo.Label(name)) }
 
+func GLOBL(name string) operand.Mem {
+	return ctx.StaticGlobal(name)
+}
+
+func DATA(offset int, v operand.Constant) {
+	ctx.AddDatum(offset, v)
+}
+
 var flags = NewFlags(flag.CommandLine)
 
 func Generate() {