bdk: ianos: restructure for future expansion

bdk/ianos/elfload/elfload.c

@@ -21,7 +21,7 @@
 
 el_status el_pread(el_ctx *ctx, void *def, size_t nb, size_t offset)
 {
-	return ctx->pread(ctx, def, nb, offset) ? EL_OK : EL_EIO;
+	return ctx->pread(ctx, def, nb, offset);
 }
 
 #define EL_PHOFF(ctx, num) (((ctx)->ehdr.e_phoff + (num) *(ctx)->ehdr.e_phentsize))

bdk/ianos/elfload/elfload.h

@@ -53,7 +53,7 @@ typedef enum
 
 typedef struct el_ctx
 {
-	bool (*pread)(struct el_ctx *ctx, void *dest, size_t nb, size_t offset);
+	el_status (*pread)(struct el_ctx *ctx, void *dest, size_t nb, size_t offset);
 
 	/* base_load_* -> address we are actually going to load at
 	 */
@@ -61,6 +61,9 @@ typedef struct el_ctx
 		base_load_paddr,
 		base_load_vaddr;
 
+	/* original memory of binary */
+	Elf_Addr eaddr;
+
 	/* size in memory of binary */
 	Elf_Addr memsz;