From 37a97ee46369a54a7df7552af737d75a5b4dafbc Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Thu, 27 Jul 2017 23:38:26 +0200
Subject: [PATCH] add printelfhdr function

---
 README.md |  1 +
 elf.h     |  1 +
 print.c   | 13 +++++++++++++
 3 files changed, 15 insertions(+)

diff --git a/README.md b/README.md
index 3797cff..2cf04d2 100644
--- a/README.md
+++ b/README.md
@@ -66,6 +66,7 @@ Functions
 int readelf(FILE *f, Fhdr *fp);
 uint8_t* readelfsection(FILE *f, char *name, uint64_t *size, Fhdr *fp);
 void freeelf(Fhdr *fp);
+void printelfhdr(Fhdr *fp);
 char* elfclass(uint8_t class);
 char* elfdata(uint8_t data);
 char* elfosabi(uint8_t osabi);
diff --git a/elf.h b/elf.h
index 237f39d..10b2494 100644
--- a/elf.h
+++ b/elf.h
@@ -50,6 +50,7 @@ struct Fhdr {
 int readelf(FILE*, Fhdr*);
 uint8_t* readelfsection(FILE*, char*, uint64_t*, Fhdr*);
 void freeelf(Fhdr*);
+void printelfhdr(Fhdr*);
 char* elfclass(uint8_t);
 char* elfdata(uint8_t);
 char* elfosabi(uint8_t);
diff --git a/print.c b/print.c
index aaf49b9..a6a6c65 100644
--- a/print.c
+++ b/print.c
@@ -127,3 +127,16 @@ printelf64phdr(Elf64_Phdr *ph, Fhdr *fp)
 	printf("align 0x%.16" PRIx64 "\n", ph->align);
 	printf("\n");
 }
+
+void
+printelfhdr(Fhdr *fp)
+{
+	printident(fp);
+	printf("type %s (0x%.4x)\n", elftype(fp->type), fp->type);
+	printf("machine %s (0x%.4x)\n", elfmachine(fp->machine), fp->machine);
+	printf("version %s (%u)\n", elfversion(fp->version), fp->version);
+	if (fp->class == ELFCLASS32)
+		printf("entry 0x%.4ux\n", (uint32_t)fp->entry);
+	if (fp->class == ELFCLASS64)
+		printf("entry 0x%.8" PRIx64 "\n", fp->entry);
+}