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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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c0007f1a65
Generic bug implementation for s390. Will increase the value of the console output on BUG() statements since registers r0-r5,r14 will not be clobbered by a printk() call that was previously done before the illegal instruction of BUG() was hit. Also implements an architecture specific WARN_ON(). Output of that could be increased but requires common code change. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
71 lines
1.4 KiB
C
71 lines
1.4 KiB
C
#ifndef _ASM_S390_BUG_H
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#define _ASM_S390_BUG_H
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#include <linux/kernel.h>
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#ifdef CONFIG_BUG
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#ifdef CONFIG_64BIT
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#define S390_LONG ".quad"
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#else
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#define S390_LONG ".long"
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#endif
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#ifdef CONFIG_DEBUG_BUGVERBOSE
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#define __EMIT_BUG(x) do { \
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asm volatile( \
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"0: j 0b+2\n" \
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"1:\n" \
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".section .rodata.str,\"aMS\",@progbits,1\n" \
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"2: .asciz \""__FILE__"\"\n" \
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".previous\n" \
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".section __bug_table,\"a\"\n" \
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"3:\t" S390_LONG "\t1b,2b\n" \
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" .short %0,%1\n" \
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" .org 3b+%2\n" \
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".previous\n" \
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: : "i" (__LINE__), \
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"i" (x), \
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"i" (sizeof(struct bug_entry))); \
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} while (0)
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#else /* CONFIG_DEBUG_BUGVERBOSE */
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#define __EMIT_BUG(x) do { \
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asm volatile( \
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"0: j 0b+2\n" \
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"1:\n" \
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".section __bug_table,\"a\"\n" \
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"2:\t" S390_LONG "\t1b\n" \
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" .short %0\n" \
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" .org 2b+%1\n" \
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".previous\n" \
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: : "i" (x), \
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"i" (sizeof(struct bug_entry))); \
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} while (0)
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#endif /* CONFIG_DEBUG_BUGVERBOSE */
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#define BUG() __EMIT_BUG(0)
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#define WARN_ON(x) ({ \
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typeof(x) __ret_warn_on = (x); \
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if (__builtin_constant_p(__ret_warn_on)) { \
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if (__ret_warn_on) \
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__EMIT_BUG(BUGFLAG_WARNING); \
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} else { \
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if (unlikely(__ret_warn_on)) \
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__EMIT_BUG(BUGFLAG_WARNING); \
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} \
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unlikely(__ret_warn_on); \
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})
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#define HAVE_ARCH_BUG
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#define HAVE_ARCH_WARN_ON
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#endif /* CONFIG_BUG */
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#include <asm-generic/bug.h>
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#endif /* _ASM_S390_BUG_H */
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