[binutils-gdb] Add functions and macros to read and write 24 bit values.

[Alan Modra]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=370e4b5079ff8d62be3adee7396948d4c5795091

commit 370e4b5079ff8d62be3adee7396948d4c5795091
Author: John Darrington <john@darrington.wattle.id.au>
Date:   Tue Jul 24 12:58:43 2018 +0200

    Add functions and macros to read and write 24 bit values.
    
    	* libbfd.c (bfd_getb24, bfd_getl24): New functions.
    	(bfd_get_24, bfd_put_24): New macros.
    	* bfd-in2.h: Regenerate.

Diff:
---
 bfd/ChangeLog |  6 ++++++
 bfd/bfd-in2.h | 14 ++++++++++++++
 bfd/libbfd.c  | 39 +++++++++++++++++++++++++++++++++++++--
 3 files changed, 57 insertions(+), 2 deletions(-)

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 7d31449..d94df80 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,5 +1,11 @@
 2018-07-27  John Darrington  <john@darrington.wattle.id.au>
 
+	* libbfd.c (bfd_getb24, bfd_getl24): New functions.
+	(bfd_get_24, bfd_put_24): New macros.
+	* bfd-in2.h: Regenerate.
+
+2018-07-27  John Darrington  <john@darrington.wattle.id.au>
+
 	* elf32-s12z.c (s12z_elf_set_mach_from_flags): Remove comment.
 
 2018-07-26  Alan Modra  <amodra@gmail.com>
diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h
index 3414682..414ca54 100644
--- a/bfd/bfd-in2.h
+++ b/bfd/bfd-in2.h
@@ -1160,6 +1160,20 @@ char *bfd_follow_build_id_debuglink (bfd *abfd, const char *dir);
 #define bfd_get_signed_16(abfd, ptr) \
   BFD_SEND (abfd, bfd_getx_signed_16, (ptr))
 
+#define bfd_put_24(abfd, val, ptr) \
+  do                                   \
+    if (bfd_big_endian (abfd))         \
+      bfd_putb24 ((val), (ptr));       \
+    else                               \
+      bfd_putl24 ((val), (ptr));       \
+  while (0)
+
+bfd_vma bfd_getb24 (const void *p);
+bfd_vma bfd_getl24 (const void *p);
+
+#define bfd_get_24(abfd, ptr) \
+  (bfd_big_endian (abfd) ? bfd_getb24 (ptr) : bfd_getl24 (ptr))
+
 #define bfd_put_32(abfd, val, ptr) \
   BFD_SEND (abfd, bfd_putx32, ((val),(ptr)))
 #define bfd_put_signed_32 \
diff --git a/bfd/libbfd.c b/bfd/libbfd.c
index 971be4f..7c45d52 100644
--- a/bfd/libbfd.c
+++ b/bfd/libbfd.c
@@ -458,6 +458,20 @@ DESCRIPTION
 .#define bfd_get_signed_16(abfd, ptr) \
 .  BFD_SEND (abfd, bfd_getx_signed_16, (ptr))
 .
+.#define bfd_put_24(abfd, val, ptr) \
+.  do					\
+.    if (bfd_big_endian (abfd))		\
+.      bfd_putb24 ((val), (ptr));	\
+.    else				\
+.      bfd_putl24 ((val), (ptr));	\
+.  while (0)
+.
+.bfd_vma bfd_getb24 (const void *p);
+.bfd_vma bfd_getl24 (const void *p);
+.
+.#define bfd_get_24(abfd, ptr) \
+.  (bfd_big_endian (abfd) ? bfd_getb24 (ptr) : bfd_getl24 (ptr))
+.
 .#define bfd_put_32(abfd, val, ptr) \
 .  BFD_SEND (abfd, bfd_putx32, ((val),(ptr)))
 .#define bfd_put_signed_32 \
@@ -613,7 +627,6 @@ bfd_putl16 (bfd_vma data, void *p)
   addr[1] = (data >> 8) & 0xff;
 }
 
-
 void
 bfd_putb24 (bfd_vma data, void *p)
 {
@@ -623,7 +636,6 @@ bfd_putb24 (bfd_vma data, void *p)
   addr[2] = data & 0xff;
 }
 
-
 void
 bfd_putl24 (bfd_vma data, void *p)
 {
@@ -633,6 +645,29 @@ bfd_putl24 (bfd_vma data, void *p)
   addr[2] = (data >> 16) & 0xff;
 }
 
+bfd_vma
+bfd_getb24 (const void *p)
+{
+  const bfd_byte *addr = (const bfd_byte *) p;
+  unsigned long v;
+
+  v =  (unsigned long) addr[0] << 16;
+  v |= (unsigned long) addr[1] << 8;
+  v |= (unsigned long) addr[2];
+  return v;
+}
+
+bfd_vma
+bfd_getl24 (const void *p)
+{
+  const bfd_byte *addr = (const bfd_byte *) p;
+  unsigned long v;
+
+  v = (unsigned long) addr[0];
+  v |= (unsigned long) addr[1] << 8;
+  v |= (unsigned long) addr[2] << 16;
+  return v;
+}
 
 bfd_vma
 bfd_getb32 (const void *p)