Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 95 insertions, 0 deletions

diff --git a/arch/parisc/include/asm/bug.h b/arch/parisc/include/asm/bug.h
new file mode 100644
index 000000000..4b6d60b94
--- /dev/null
+++ b/arch/parisc/include/asm/bug.h
@@ -0,0 +1,95 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _PARISC_BUG_H
+#define _PARISC_BUG_H
+
+#include <linux/kernel.h>	/* for BUGFLAG_TAINT */
+
+/*
+ * Tell the user there is some problem.
+ * The offending file and line are encoded in the __bug_table section.
+ */
+
+#ifdef CONFIG_BUG
+#define HAVE_ARCH_BUG
+#define HAVE_ARCH_WARN_ON
+
+/* the break instruction is used as BUG() marker.  */
+#define	PARISC_BUG_BREAK_ASM	"break 0x1f, 0x1fff"
+#define	PARISC_BUG_BREAK_INSN	0x03ffe01f  /* PARISC_BUG_BREAK_ASM */
+
+#if defined(CONFIG_64BIT)
+#define ASM_WORD_INSN		".dword\t"
+#else
+#define ASM_WORD_INSN		".word\t"
+#endif
+
+#ifdef CONFIG_DEBUG_BUGVERBOSE
+#define BUG()								\
+	do {								\
+		asm volatile("\n"					\
+			     "1:\t" PARISC_BUG_BREAK_ASM "\n"		\
+			     "\t.pushsection __bug_table,\"aw\"\n"	\
+			     "2:\t" ASM_WORD_INSN "1b, %c0\n"		\
+			     "\t.short %c1, %c2\n"			\
+			     "\t.org 2b+%c3\n"				\
+			     "\t.popsection"				\
+			     : : "i" (__FILE__), "i" (__LINE__),	\
+			     "i" (0), "i" (sizeof(struct bug_entry)) ); \
+		unreachable();						\
+	} while(0)
+
+#else
+#define BUG()								\
+	do {								\
+		asm volatile(PARISC_BUG_BREAK_ASM : : );		\
+		unreachable();						\
+	} while(0)
+#endif
+
+#ifdef CONFIG_DEBUG_BUGVERBOSE
+#define __WARN_FLAGS(flags)						\
+	do {								\
+		asm volatile("\n"					\
+			     "1:\t" PARISC_BUG_BREAK_ASM "\n"		\
+			     "\t.pushsection __bug_table,\"aw\"\n"	\
+			     "2:\t" ASM_WORD_INSN "1b, %c0\n"		\
+			     "\t.short %c1, %c2\n"			\
+			     "\t.org 2b+%c3\n"				\
+			     "\t.popsection"				\
+			     : : "i" (__FILE__), "i" (__LINE__),	\
+			     "i" (BUGFLAG_WARNING|(flags)),		\
+			     "i" (sizeof(struct bug_entry)) );		\
+	} while(0)
+#else
+#define __WARN_FLAGS(flags)						\
+	do {								\
+		asm volatile("\n"					\
+			     "1:\t" PARISC_BUG_BREAK_ASM "\n"		\
+			     "\t.pushsection __bug_table,\"aw\"\n"	\
+			     "2:\t" ASM_WORD_INSN "1b\n"		\
+			     "\t.short %c0\n"				\
+			     "\t.org 2b+%c1\n"				\
+			     "\t.popsection"				\
+			     : : "i" (BUGFLAG_WARNING|(flags)),		\
+			     "i" (sizeof(struct bug_entry)) );		\
+	} while(0)
+#endif
+
+
+#define WARN_ON(x) ({						\
+	int __ret_warn_on = !!(x);				\
+	if (__builtin_constant_p(__ret_warn_on)) {		\
+		if (__ret_warn_on)				\
+			__WARN();				\
+	} else {						\
+		if (unlikely(__ret_warn_on))			\
+			__WARN();				\
+	}							\
+	unlikely(__ret_warn_on);				\
+})
+
+#endif
+
+#include <asm-generic/bug.h>
+#endif
+