Start filling out rom_image format.

cmd/print_elf/main.go

@@ -0,0 +1,18 @@
+package main
+import (
+  "debug/elf"
+  "os"
+  "fmt"
+)
+
+func main() {
+  path := os.Args[1]
+  f, err := elf.Open(path)
+  if err != nil { panic(err) }
+  defer f.Close()
+
+  fmt.Printf("%+v\n", f)
+  for _, sec := range(f.Sections) {
+    fmt.Printf("%+v\n", sec.SectionHeader)
+  }
+}

rom_image.go

@@ -6,6 +6,21 @@ import (
 	"os"
 )
 
+// Format:
+// -- 0x0:
+// romheader
+// -- 0x40
+// .text of Boot
+// -- 0x40 + 2864 = 0xB70
+// all of font
+// -- 0x40 + 2864 + 1150 = 0xFEE
+// -- 0x400:
+// some len(0x10) preamble
+// .text of entry.o
+// -- 0x440:
+// ???
+
+
 func fill(f *os.File, fill byte, start int, end int) error {
   if start > end {
     return errors.New(fmt.Sprintf("When filling bytes, start [%d] is greater than end [%d].", start, end))