codegen skeleton

1 files changed, 27 insertions, 0 deletions

diff --git a/obj.c b/obj.c
new file mode 100644
index 0000000..78aab14
--- /dev/null
+++ b/obj.c
@@ -0,0 +1,27 @@
+#include "obj.h"
+#include "common.h"
+
+struct objfile objout;
+
+void
+objini(const char *file)
+{
+   enum { NTEXT = 4<<20 /* 4MiB */ };
+   assert(!objout.file);
+   objout.file = file;
+   objout.code = objout.textbegin = mapzeros(NTEXT);
+   objout.textend = objout.textbegin + NTEXT;
+}
+
+void
+objfini(void)
+{
+   void *popen(char *, char *), pclose(void *);
+   long fwrite(void *, size_t, size_t, void *);
+   void *cmd = popen("ndisasm -b64 -", "w");
+   ioflush(&bstderr); ioflush(&bstdout);
+   fwrite(objout.textbegin, 1, objout.code - objout.textbegin, cmd);
+   pclose(cmd);
+}
+
+/* vim:set ts=3 sw=3 expandtab: */