diff options
Diffstat (limited to 'meta/recipes-bsp/grub/files/safemath-Add-some-arithmetic-primitives-that-check-f.patch')
| -rw-r--r-- | meta/recipes-bsp/grub/files/safemath-Add-some-arithmetic-primitives-that-check-f.patch | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/meta/recipes-bsp/grub/files/safemath-Add-some-arithmetic-primitives-that-check-f.patch b/meta/recipes-bsp/grub/files/safemath-Add-some-arithmetic-primitives-that-check-f.patch deleted file mode 100644 index 29021e8d8f..0000000000 --- a/meta/recipes-bsp/grub/files/safemath-Add-some-arithmetic-primitives-that-check-f.patch +++ /dev/null @@ -1,94 +0,0 @@ -From 06c361a71c4998635493610e5d76d0d223925251 Mon Sep 17 00:00:00 2001 -From: Peter Jones <pjones@redhat.com> -Date: Mon, 15 Jun 2020 10:58:42 -0400 -Subject: [PATCH 5/9] safemath: Add some arithmetic primitives that check for - overflow - -This adds a new header, include/grub/safemath.h, that includes easy to -use wrappers for __builtin_{add,sub,mul}_overflow() declared like: - - bool OP(a, b, res) - -where OP is grub_add, grub_sub or grub_mul. OP() returns true in the -case where the operation would overflow and res is not modified. -Otherwise, false is returned and the operation is executed. - -These arithmetic primitives require newer compiler versions. So, bump -these requirements in the INSTALL file too. - -Upstream-Status: Backport [commit 68708c4503018d61dbcce7ac11cbb511d6425f4d -from https://git.savannah.gnu.org/git/grub.git] - -Signed-off-by: Peter Jones <pjones@redhat.com> -Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com> -[YL: omit the change to INSTALL from original patch] -Signed-off-by: Yongxin Liu <yongxin.liu@windriver.com> ---- - include/grub/compiler.h | 8 ++++++++ - include/grub/safemath.h | 37 +++++++++++++++++++++++++++++++++++++ - 2 files changed, 45 insertions(+) - create mode 100644 include/grub/safemath.h - -diff --git a/include/grub/compiler.h b/include/grub/compiler.h -index c9e1d7a..8f3be3a 100644 ---- a/include/grub/compiler.h -+++ b/include/grub/compiler.h -@@ -48,4 +48,12 @@ - # define WARN_UNUSED_RESULT - #endif - -+#if defined(__clang__) && defined(__clang_major__) && defined(__clang_minor__) -+# define CLANG_PREREQ(maj,min) \ -+ ((__clang_major__ > (maj)) || \ -+ (__clang_major__ == (maj) && __clang_minor__ >= (min))) -+#else -+# define CLANG_PREREQ(maj,min) 0 -+#endif -+ - #endif /* ! GRUB_COMPILER_HEADER */ -diff --git a/include/grub/safemath.h b/include/grub/safemath.h -new file mode 100644 -index 0000000..c17b89b ---- /dev/null -+++ b/include/grub/safemath.h -@@ -0,0 +1,37 @@ -+/* -+ * GRUB -- GRand Unified Bootloader -+ * Copyright (C) 2020 Free Software Foundation, Inc. -+ * -+ * GRUB is free software: you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License as published by -+ * the Free Software Foundation, either version 3 of the License, or -+ * (at your option) any later version. -+ * -+ * GRUB is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public License -+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>. -+ * -+ * Arithmetic operations that protect against overflow. -+ */ -+ -+#ifndef GRUB_SAFEMATH_H -+#define GRUB_SAFEMATH_H 1 -+ -+#include <grub/compiler.h> -+ -+/* These appear in gcc 5.1 and clang 3.8. */ -+#if GNUC_PREREQ(5, 1) || CLANG_PREREQ(3, 8) -+ -+#define grub_add(a, b, res) __builtin_add_overflow(a, b, res) -+#define grub_sub(a, b, res) __builtin_sub_overflow(a, b, res) -+#define grub_mul(a, b, res) __builtin_mul_overflow(a, b, res) -+ -+#else -+#error gcc 5.1 or newer or clang 3.8 or newer is required -+#endif -+ -+#endif /* GRUB_SAFEMATH_H */ --- -2.14.4 - |