org.handhelds.familiar/packages/linux/linux-colinux-2.4.28/gcc-registerparanoia.patch

   1
   2 #
   3 # Patch managed by http://www.mn-logistik.de/unsupported/pxa250/patcher
   4 #
   5
   6 --- linux-2.4.27/include/asm-arm/system.h~gcc-registerparanoia  2003-08-25 07:44:43.000000000 -0400
   7 +++ linux-2.4.27/include/asm-arm/system.h       2004-11-27 15:32:23.613933592 -0500
   8 @@ -3,6 +3,15 @@
   9
  10  #ifdef __KERNEL__
  11
  12 +/*
  13 + * This is used to ensure the compiler did actually allocate the register we
  14 + * asked it for some inline assembly sequences.  Apparently we can't trust
  15 + * the compiler from one version to another so a bit of paranoia won't hurt.
  16 + * This string is meant to be concatenated with the inline asm string and
  17 + * will cause compilation to stop on mismatch.
  18 + */
  19 +#define __asmeq(x, y)  ".ifnc " x "," y " ; .err ; .endif\n\t"
  20 +
  21  #include <linux/config.h>
  22  #include <linux/kernel.h>
  23
  24 --- linux-2.4.27/include/asm-arm/uaccess.h~gcc-registerparanoia 2001-10-25 16:53:55.000000000 -0400
  25 +++ linux-2.4.27/include/asm-arm/uaccess.h      2004-11-27 15:32:23.613933592 -0500
  26 @@ -6,6 +6,7 @@
  27   */
  28  #include <linux/sched.h>
  29  #include <asm/errno.h>
  30 +#include <asm/system.h>
  31
  32  #define VERIFY_READ 0
  33  #define VERIFY_WRITE 1
  34 @@ -71,7 +72,9 @@
  35  extern int __get_user_bad(void);
  36
  37  #define __get_user_x(__r1,__p,__e,__s,__i...)                          \
  38 -          __asm__ __volatile__ ("bl    __get_user_" #__s               \
  39 +          __asm__ __volatile__ (                                       \
  40 +               __asmeq("%0", "r0") __asmeq("%1", "r1")                 \
  41 +               "bl     __get_user_" #__s                               \
  42                 : "=&r" (__e), "=r" (__r1)                              \
  43                 : "0" (__p)                                             \
  44                 : __i)
  45 @@ -110,7 +113,9 @@
  46  extern int __put_user_bad(void);
  47
  48  #define __put_user_x(__r1,__p,__e,__s,__i...)                          \
  49 -          __asm__ __volatile__ ("bl    __put_user_" #__s               \
  50 +          __asm__ __volatile__ (                                       \
  51 +               __asmeq("%0", "r0") __asmeq("%2", "r1")                 \
  52 +               "bl     __put_user_" #__s                               \
  53                 : "=&r" (__e)                                           \
  54                 : "0" (__p), "r" (__r1)                                 \
  55                 : __i)