#ifndef __ASM_CRISv10_ARCH_BUG_H #define __ASM_CRISv10_ARCH_BUG_H #include <linux/stringify.h> #ifdef CONFIG_BUG #ifdef CONFIG_DEBUG_BUGVERBOSE /* The BUG() macro is used for marking obviously incorrect code paths. * It will cause a message with the file name and line number to be printed, * and then cause an oops. The message is actually printed by handle_BUG() * in arch/cris/kernel/traps.c, and the reason we use this method of storing * the file name and line number is that we do not want to affect the registers * by calling printk() before causing the oops. */ #define BUG_PREFIX 0x0D7F #define BUG_MAGIC 0x00001234 struct bug_frame { unsigned short prefix; unsigned int magic; unsigned short clear; unsigned short movu; unsigned short line; unsigned short jump; unsigned char *filename; }; #if 0 /* Unfortunately this version of the macro does not work due to a problem * with the compiler (aka a bug) when compiling with -O2, which sometimes * erroneously causes the second input to be stored in a register... */ #define BUG() \ __asm__ __volatile__ ("clear.d [" __stringify(BUG_MAGIC) "]\n\t"\ "movu.w %0,$r0\n\t" \ "jump %1\n\t" \ : : "i" (__LINE__), "i" (__FILE__)) #else /* This version will have to do for now, until the compiler is fixed. * The drawbacks of this version are that the file name will appear multiple * times in the .rodata section, and that __LINE__ and __FILE__ can probably * not be used like this with newer versions of gcc. */ #define BUG() \ __asm__ __volatile__ ("clear.d [" __stringify(BUG_MAGIC) "]\n\t"\ "movu.w " __stringify(__LINE__) ",$r0\n\t"\ "jump 0f\n\t" \ ".section .rodata\n" \ "0:\t.string \"" __FILE__ "\"\n\t" \ ".previous") #endif #else /* This just causes an oops. */ #define BUG() (*(int *)0 = 0) #endif #define HAVE_ARCH_BUG #endif #include <asm-generic/bug.h> #endifOverall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Jesper Nilsson | 99 | 100.00% | 1 | 100.00% |
| Total | 99 | 100.00% | 1 | 100.00% |