c8538a7aa5
This patch eliminates all kernel BUGs, trims about 35k off the typical kernel, and makes the system slightly faster. Signed-off-by: Matt Mackall <mpm@selenic.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
#ifndef _PPC_BUG_H
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#define _PPC_BUG_H
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struct bug_entry {
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unsigned long bug_addr;
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int line;
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const char *file;
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const char *function;
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};
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/*
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* If this bit is set in the line number it means that the trap
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* is for WARN_ON rather than BUG or BUG_ON.
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*/
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#define BUG_WARNING_TRAP 0x1000000
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#ifdef CONFIG_BUG
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#define BUG() do { \
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__asm__ __volatile__( \
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"1: twi 31,0,0\n" \
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".section __bug_table,\"a\"\n\t" \
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" .long 1b,%0,%1,%2\n" \
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".previous" \
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: : "i" (__LINE__), "i" (__FILE__), "i" (__FUNCTION__)); \
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} while (0)
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#define BUG_ON(x) do { \
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if (!__builtin_constant_p(x) || (x)) { \
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__asm__ __volatile__( \
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"1: twnei %0,0\n" \
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".section __bug_table,\"a\"\n\t" \
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" .long 1b,%1,%2,%3\n" \
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".previous" \
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: : "r" (x), "i" (__LINE__), "i" (__FILE__), \
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"i" (__FUNCTION__)); \
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} \
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} while (0)
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#define WARN_ON(x) do { \
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if (!__builtin_constant_p(x) || (x)) { \
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__asm__ __volatile__( \
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"1: twnei %0,0\n" \
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".section __bug_table,\"a\"\n\t" \
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" .long 1b,%1,%2,%3\n" \
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".previous" \
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: : "r" (x), "i" (__LINE__ + BUG_WARNING_TRAP), \
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"i" (__FILE__), "i" (__FUNCTION__)); \
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} \
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} while (0)
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#define HAVE_ARCH_BUG
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#define HAVE_ARCH_BUG_ON
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#define HAVE_ARCH_WARN_ON
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#endif
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#include <asm-generic/bug.h>
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#endif
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