1 files changed, 70 insertions, 0 deletions

diff --git a/arch/s390/include/asm/bug.h b/arch/s390/include/asm/bug.h
new file mode 100644
index 000000000000..384e3621e341
--- /dev/null
+++ b/arch/s390/include/asm/bug.h
@@ -0,0 +1,70 @@
+#ifndef _ASM_S390_BUG_H
+#define _ASM_S390_BUG_H
+
+#include <linux/kernel.h>
+
+#ifdef CONFIG_BUG
+
+#ifdef CONFIG_64BIT
+#define S390_LONG ".quad"
+#else
+#define S390_LONG ".long"
+#endif
+
+#ifdef CONFIG_DEBUG_BUGVERBOSE
+
+#define __EMIT_BUG(x) do {                                      \
+        asm volatile(                                           \
+                "0:     j       0b+2\n"                         \
+                "1:\n"                                          \
+                ".section .rodata.str,\"aMS\",@progbits,1\n"    \
+                "2:     .asciz  \""__FILE__"\"\n"               \
+                ".previous\n"                                   \
+                ".section __bug_table,\"a\"\n"                  \
+                "3:\t"  S390_LONG "\t1b,2b\n"                   \
+                "       .short  %0,%1\n"                        \
+                "       .org    3b+%2\n"                        \
+                ".previous\n"                                   \
+                : : "i" (__LINE__),                             \
+                    "i" (x),                                    \
+                    "i" (sizeof(struct bug_entry)));            \
+} while (0)
+
+#else /* CONFIG_DEBUG_BUGVERBOSE */
+
+#define __EMIT_BUG(x) do {                              \
+        asm volatile(                                   \
+                "0:     j       0b+2\n"                 \
+                "1:\n"                                  \
+                ".section __bug_table,\"a\"\n"          \
+                "2:\t"  S390_LONG "\t1b\n"              \
+                "       .short  %0\n"                   \
+                "       .org    2b+%1\n"                \
+                ".previous\n"                           \
+                : : "i" (x),                            \
+                    "i" (sizeof(struct bug_entry)));    \
+} while (0)
+
+#endif /* CONFIG_DEBUG_BUGVERBOSE */
+
+#define BUG()   __EMIT_BUG(0)
+
+#define WARN_ON(x) ({                                   \
+        int __ret_warn_on = !!(x);                      \
+        if (__builtin_constant_p(__ret_warn_on)) {      \
+                if (__ret_warn_on)                      \
+                        __EMIT_BUG(BUGFLAG_WARNING);    \
+        } else {                                        \
+                if (unlikely(__ret_warn_on))            \
+                        __EMIT_BUG(BUGFLAG_WARNING);    \
+        }                                               \
+        unlikely(__ret_warn_on);                        \
+})
+
+#define HAVE_ARCH_BUG
+#define HAVE_ARCH_WARN_ON
+#endif /* CONFIG_BUG */
+
+#include <asm-generic/bug.h>
+
+#endif /* _ASM_S390_BUG_H */