# # 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 #include --- 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 #include +#include #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)