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#
# Patch managed by http://www.mn-logistik.de/unsupported/pxa250/patcher
#
--- linux-2.4.27/include/asm-arm/system.h~gcc-registerparanoia 2003-08-25 07:44:43.000000000 -0400
+++ linux-2.4.27/include/asm-arm/system.h 2004-11-27 15:32:23.613933592 -0500
@@ -3,6 +3,15 @@
#ifdef __KERNEL__
+/*
+ * This is used to ensure the compiler did actually allocate the register we
+ * asked it for some inline assembly sequences. Apparently we can't trust
+ * the compiler from one version to another so a bit of paranoia won't hurt.
+ * This string is meant to be concatenated with the inline asm string and
+ * will cause compilation to stop on mismatch.
+ */
+#define __asmeq(x, y) ".ifnc " x "," y " ; .err ; .endif\n\t"
+
#include <linux/config.h>
#include <linux/kernel.h>
--- linux-2.4.27/include/asm-arm/uaccess.h~gcc-registerparanoia 2001-10-25 16:53:55.000000000 -0400
+++ linux-2.4.27/include/asm-arm/uaccess.h 2004-11-27 15:32:23.613933592 -0500
@@ -6,6 +6,7 @@
*/
#include <linux/sched.h>
#include <asm/errno.h>
+#include <asm/system.h>
#define VERIFY_READ 0
#define VERIFY_WRITE 1
@@ -71,7 +72,9 @@
extern int __get_user_bad(void);
#define __get_user_x(__r1,__p,__e,__s,__i...) \
- __asm__ __volatile__ ("bl __get_user_" #__s \
+ __asm__ __volatile__ ( \
+ __asmeq("%0", "r0") __asmeq("%1", "r1") \
+ "bl __get_user_" #__s \
: "=&r" (__e), "=r" (__r1) \
: "0" (__p) \
: __i)
@@ -110,7 +113,9 @@
extern int __put_user_bad(void);
#define __put_user_x(__r1,__p,__e,__s,__i...) \
- __asm__ __volatile__ ("bl __put_user_" #__s \
+ __asm__ __volatile__ ( \
+ __asmeq("%0", "r0") __asmeq("%2", "r1") \
+ "bl __put_user_" #__s \
: "=&r" (__e) \
: "0" (__p), "r" (__r1) \
: __i)
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