diff --git a/src/query.c b/src/query.c
index c38cf14..28050bd 100644
--- a/src/query.c
+++ b/src/query.c
@@ -12,6 +12,7 @@
 #include <blue/term.h>
 #include <ctype.h>
 #include <errno.h>
+#include <inttypes.h>
 #include <stdlib.h>
 
 enum {
@@ -131,6 +132,52 @@ static void print_tag_info(struct ec3_image_ioctx *image)
 		printf("    %-8s: %llu bytes\n",
 		       "size",
 		       tags[i].tag_total_length);
+
+		if (tags[i].tag_type != EC3_TAG_EXEC) {
+			continue;
+		}
+
+		printf("    %-8s: ", "exec");
+
+		const struct ec3_tag_executable_info *exec = &tags[i].tag_exe;
+
+		switch (exec->exe_format) {
+		case EC3_EXEC_ELF:
+			printf("ELF\n");
+			printf("              entry = [%06" PRIx64 "]\n",
+			       exec->exe_elf.elf_entry);
+			printf("              text  = [0x%06" PRIx32
+			       "-0x%06" PRIx32 "]->[0x%016" PRIx64
+			       "-0x%016" PRIx64
+			       "] "
+			       "(align=0x%" PRIx32 ")\n",
+			       exec->exe_elf.elf_text_offset,
+			       exec->exe_elf.elf_text_offset
+			               + exec->exe_elf.elf_text_filesz,
+			       exec->exe_elf.elf_text_vaddr,
+			       exec->exe_elf.elf_text_vaddr
+			               + exec->exe_elf.elf_text_memsz,
+			       exec->exe_elf.elf_text_align);
+			printf("              data  = [0x%06" PRIx32
+			       "-0x%06" PRIx32 "]->[0x%016" PRIx64
+			       "-0x%016" PRIx64
+			       "] "
+			       "(align=0x%" PRIx32 ")\n",
+			       exec->exe_elf.elf_data_offset,
+			       exec->exe_elf.elf_data_offset
+			               + exec->exe_elf.elf_data_filesz,
+			       exec->exe_elf.elf_data_vaddr,
+			       exec->exe_elf.elf_data_vaddr
+			               + exec->exe_elf.elf_data_memsz,
+			       exec->exe_elf.elf_data_align);
+			break;
+		case EC3_EXEC_OTHER:
+			printf("OTHER\n");
+			break;
+		case EC3_EXEC_NONE:
+			printf("NONE\n");
+			break;
+		}
 	}
 }
 
diff --git a/src/tag.h b/src/tag.h
index f9be46a..c755afa 100644
--- a/src/tag.h
+++ b/src/tag.h
@@ -14,18 +14,42 @@ struct b_file;
 enum ec3_tag_ioctx_mode {
 	EC3_TAG_IO_READ = 0x01u,
 	EC3_TAG_IO_WRITE = 0x02u,
-	EC3_TAG_IO_READWRITE = 0x03u,
+	EC3_TAG_IO_READWRITE = EC3_TAG_IO_READ | EC3_TAG_IO_WRITE,
 
 	EC3_TAG_IO_SEQUENTIAL = 0x04u,
 	EC3_TAG_IO_CLOSED = 0x10u,
 };
 
+struct ec3_tag_executable_info {
+	unsigned int exe_format;
+
+	union {
+		struct {
+			uint32_t elf_data_offset;
+			uint32_t elf_data_filesz, elf_data_memsz;
+
+			uint32_t elf_text_offset;
+			uint32_t elf_text_filesz, elf_text_memsz;
+
+			uint32_t elf_data_align, elf_text_align;
+
+			uint64_t elf_data_vaddr;
+			uint64_t elf_text_vaddr;
+			uint64_t elf_entry;
+		} exe_elf;
+	};
+};
+
 struct ec3_tag_info {
 	unsigned long tag_type;
 	unsigned long tag_flags;
 	unsigned long tag_checksum;
 	unsigned long long tag_ident;
 	unsigned long long tag_total_length;
+
+	union {
+		struct ec3_tag_executable_info tag_exe;
+	};
 };
 
 struct ec3_tag_ioctx {
@@ -37,7 +61,6 @@ struct ec3_tag_ioctx {
 	/* temp buffer of cluster size, used for pipeline operations */
 	void *io_cluster_buf;
 
-	/* this points to memory belonging to ec3_image_ioctx */
 	struct ec3_tag_info io_tag_info;
 
 	/* io_f_rotag is a reference to the main image file. a data and cluster