binutils/0001-CVE-2018-18309.patch
2019-12-25 15:42:36 +08:00

111 lines
2.9 KiB
Diff

From 370e4b5079ff8d62be3adee7396948d4c5795091 Mon Sep 17 00:00:00 2001
From: John Darrington <john@darrington.wattle.id.au>
Date: Tue, 24 Jul 2018 12:58:43 +0200
Subject: [PATCH] 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.
url:https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=370e4b5079ff8d62be3adee7396948d4c5795091
diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h
index 3414682988..414ca54515 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 971be4f3de..7c45d52aaf 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)
--
2.19.1