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-rw-r--r--arch/parisc/include/asm/jump_label.h48
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/jump_label.h b/arch/parisc/include/asm/jump_label.h
new file mode 100644
index 000000000..94428798b
--- /dev/null
+++ b/arch/parisc/include/asm/jump_label.h
@@ -0,0 +1,48 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_PARISC_JUMP_LABEL_H
+#define _ASM_PARISC_JUMP_LABEL_H
+
+#ifndef __ASSEMBLY__
+
+#include <linux/types.h>
+#include <linux/stringify.h>
+#include <asm/assembly.h>
+
+#define JUMP_LABEL_NOP_SIZE 4
+
+static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
+{
+ asm_volatile_goto("1:\n\t"
+ "nop\n\t"
+ ".pushsection __jump_table, \"aw\"\n\t"
+ ".align %1\n\t"
+ ".word 1b - ., %l[l_yes] - .\n\t"
+ __stringify(ASM_ULONG_INSN) " %c0 - .\n\t"
+ ".popsection\n\t"
+ : : "i" (&((char *)key)[branch]), "i" (sizeof(long))
+ : : l_yes);
+
+ return false;
+l_yes:
+ return true;
+}
+
+static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
+{
+ asm_volatile_goto("1:\n\t"
+ "b,n %l[l_yes]\n\t"
+ ".pushsection __jump_table, \"aw\"\n\t"
+ ".align %1\n\t"
+ ".word 1b - ., %l[l_yes] - .\n\t"
+ __stringify(ASM_ULONG_INSN) " %c0 - .\n\t"
+ ".popsection\n\t"
+ : : "i" (&((char *)key)[branch]), "i" (sizeof(long))
+ : : l_yes);
+
+ return false;
+l_yes:
+ return true;
+}
+
+#endif /* __ASSEMBLY__ */
+#endif