aboutsummaryrefslogtreecommitdiffstats
path: root/main/cpufrequtils/0001-Support-for-Position-Independet-Code-by-aboid-clobbe.patch
diff options
context:
space:
mode:
Diffstat (limited to 'main/cpufrequtils/0001-Support-for-Position-Independet-Code-by-aboid-clobbe.patch')
-rw-r--r--main/cpufrequtils/0001-Support-for-Position-Independet-Code-by-aboid-clobbe.patch33
1 files changed, 33 insertions, 0 deletions
diff --git a/main/cpufrequtils/0001-Support-for-Position-Independet-Code-by-aboid-clobbe.patch b/main/cpufrequtils/0001-Support-for-Position-Independet-Code-by-aboid-clobbe.patch
new file mode 100644
index 0000000000..b10d2e5635
--- /dev/null
+++ b/main/cpufrequtils/0001-Support-for-Position-Independet-Code-by-aboid-clobbe.patch
@@ -0,0 +1,33 @@
+From 4c6552d2df2912a710cab6acf476347a7fbf15a0 Mon Sep 17 00:00:00 2001
+From: Natanael Copa <ncopa@alpinelinux.org>
+Date: Wed, 1 Sep 2010 09:12:44 +0000
+Subject: [PATCH] Support for Position Independet Code by aboid clobbering PIC register
+
+Do not use the PIC register (ebx)
+See http://www.gentoo.org/proj/en/hardened/pic-fix-guide.xml#doc_chap5
+---
+ utils/cpuid.h | 7 +++++--
+ 1 files changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/utils/cpuid.h b/utils/cpuid.h
+index 2bac69a..ebcec7c 100644
+--- a/utils/cpuid.h
++++ b/utils/cpuid.h
+@@ -5,9 +5,12 @@ static inline void __cpuid(unsigned int *eax, unsigned int *ebx,
+ unsigned int *ecx, unsigned int *edx)
+ {
+ /* ecx is often an input as well as an output. */
+- asm volatile("cpuid"
++ asm volatile(
++ "movl %%ebx, %%esi;"
++ "cpuid;"
++ "xchg %%ebx, %%esi;"
+ : "=a" (*eax),
+- "=b" (*ebx),
++ "=S" (*ebx),
+ "=c" (*ecx),
+ "=d" (*edx)
+ : "0" (*eax), "2" (*ecx));
+--
+1.7.2.2
+