diff options
Diffstat (limited to 'include/asm-ppc64/bug.h')
| -rw-r--r-- | include/asm-ppc64/bug.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/include/asm-ppc64/bug.h b/include/asm-ppc64/bug.h new file mode 100644 index 000000000000..db31dd22233c --- /dev/null +++ b/include/asm-ppc64/bug.h @@ -0,0 +1,65 @@ +#ifndef _PPC64_BUG_H +#define _PPC64_BUG_H + +/* + * Define an illegal instr to trap on the bug. + * We don't use 0 because that marks the end of a function + * in the ELF ABI. That's "Boo Boo" in case you wonder... + */ +#define BUG_OPCODE .long 0x00b00b00 /* For asm */ +#define BUG_ILLEGAL_INSTR "0x00b00b00" /* For BUG macro */ + +#ifndef __ASSEMBLY__ + +struct bug_entry { + unsigned long bug_addr; + long line; + const char *file; + const char *function; +}; + +struct bug_entry *find_bug(unsigned long bugaddr); + +/* + * If this bit is set in the line number it means that the trap + * is for WARN_ON rather than BUG or BUG_ON. + */ +#define BUG_WARNING_TRAP 0x1000000 + +#define BUG() do { \ + __asm__ __volatile__( \ + "1: twi 31,0,0\n" \ + ".section __bug_table,\"a\"\n\t" \ + " .llong 1b,%0,%1,%2\n" \ + ".previous" \ + : : "i" (__LINE__), "i" (__FILE__), "i" (__FUNCTION__)); \ +} while (0) + +#define BUG_ON(x) do { \ + __asm__ __volatile__( \ + "1: tdnei %0,0\n" \ + ".section __bug_table,\"a\"\n\t" \ + " .llong 1b,%1,%2,%3\n" \ + ".previous" \ + : : "r" (x), "i" (__LINE__), "i" (__FILE__), \ + "i" (__FUNCTION__)); \ +} while (0) + +#define WARN_ON(x) do { \ + __asm__ __volatile__( \ + "1: tdnei %0,0\n" \ + ".section __bug_table,\"a\"\n\t" \ + " .llong 1b,%1,%2,%3\n" \ + ".previous" \ + : : "r" (x), "i" (__LINE__ + BUG_WARNING_TRAP), \ + "i" (__FILE__), "i" (__FUNCTION__)); \ +} while (0) + +#endif + +#define HAVE_ARCH_BUG +#define HAVE_ARCH_BUG_ON +#define HAVE_ARCH_WARN_ON +#include <asm-generic/bug.h> + +#endif |