25433b123c
ppc32/ppc64: Merge bug.h into include/asm-powerpc This patch merges bug.h into include/asm-powerpc. Changed the data structure for bug_entry such that line is always an int on both 32 and 64-bit platforms; removed casts to int from the 64-bit trap code to reflect this. Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Becky Bruce <Becky.Bruce@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
#ifndef _ASM_POWERPC_BUG_H
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#define _ASM_POWERPC_BUG_H
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/*
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* Define an illegal instr to trap on the bug.
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* We don't use 0 because that marks the end of a function
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* in the ELF ABI. That's "Boo Boo" in case you wonder...
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*/
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#define BUG_OPCODE .long 0x00b00b00 /* For asm */
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#define BUG_ILLEGAL_INSTR "0x00b00b00" /* For BUG macro */
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#ifndef __ASSEMBLY__
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#ifdef __powerpc64__
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#define BUG_TABLE_ENTRY(label, line, file, func) \
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".llong " #label "\n .long " #line "\n .llong " #file ", " #func "\n"
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#define TRAP_OP(ra, rb) "1: tdnei " #ra ", " #rb "\n"
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#define DATA_TYPE long long
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#else
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#define BUG_TABLE_ENTRY(label, line, file, func) \
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".long " #label ", " #line ", " #file ", " #func "\n"
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#define TRAP_OP(ra, rb) "1: twnei " #ra ", " #rb "\n"
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#define DATA_TYPE int
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#endif /* __powerpc64__ */
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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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struct bug_entry *find_bug(unsigned long bugaddr);
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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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BUG_TABLE_ENTRY(1b,%0,%1,%2) \
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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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__asm__ __volatile__( \
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TRAP_OP(%0,0) \
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".section __bug_table,\"a\"\n\t" \
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BUG_TABLE_ENTRY(1b,%1,%2,%3) \
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".previous" \
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: : "r" ((DATA_TYPE)(x)), "i" (__LINE__), \
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"i" (__FILE__), "i" (__FUNCTION__)); \
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} while (0)
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#define WARN_ON(x) do { \
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__asm__ __volatile__( \
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TRAP_OP(%0,0) \
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".section __bug_table,\"a\"\n\t" \
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BUG_TABLE_ENTRY(1b,%1,%2,%3) \
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".previous" \
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: : "r" ((DATA_TYPE)(x)), \
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"i" (__LINE__ + BUG_WARNING_TRAP), \
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"i" (__FILE__), "i" (__FUNCTION__)); \
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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 /* CONFIG_BUG */
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#endif /* __ASSEMBLY __ */
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#include <asm-generic/bug.h>
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#endif /* _ASM_POWERPC_BUG_H */
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