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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/arch/powerpc/include/asm/code-patching.h
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@@ -1,13 +1,9 @@
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
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 #ifndef _ASM_POWERPC_CODE_PATCHING_H
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 #define _ASM_POWERPC_CODE_PATCHING_H
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 /*
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  * Copyright 2008, Michael Ellerman, IBM Corporation.
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License
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- * as published by the Free Software Foundation; either version
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- * 2 of the License, or (at your option) any later version.
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  */
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 #include <asm/types.h>
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@@ -15,6 +11,7 @@
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 #include <linux/string.h>
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 #include <linux/kallsyms.h>
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 #include <asm/asm-compat.h>
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+#include <asm/inst.h>
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 /* Flags for create_branch:
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  * "b"   == create_branch(addr, target, 0);
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@@ -27,23 +24,47 @@
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24
 
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 bool is_offset_in_branch_range(long offset);
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 bool is_offset_in_cond_branch_range(long offset);
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-unsigned int create_branch(const unsigned int *addr,
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-			   unsigned long target, int flags);
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-unsigned int create_cond_branch(const unsigned int *addr,
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-				unsigned long target, int flags);
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-int patch_branch(unsigned int *addr, unsigned long target, int flags);
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-int patch_instruction(unsigned int *addr, unsigned int instr);
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-int raw_patch_instruction(unsigned int *addr, unsigned int instr);
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-int patch_instruction_site(s32 *addr, unsigned int instr);
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-int patch_branch_site(s32 *site, unsigned long target, int flags);
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+int create_branch(struct ppc_inst *instr, const struct ppc_inst *addr,
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+		  unsigned long target, int flags);
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+int create_cond_branch(struct ppc_inst *instr, const struct ppc_inst *addr,
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+		       unsigned long target, int flags);
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+int patch_branch(struct ppc_inst *addr, unsigned long target, int flags);
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+int patch_instruction(struct ppc_inst *addr, struct ppc_inst instr);
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+int raw_patch_instruction(struct ppc_inst *addr, struct ppc_inst instr);
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-int instr_is_relative_branch(unsigned int instr);
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-int instr_is_relative_link_branch(unsigned int instr);
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-int instr_is_branch_to_addr(const unsigned int *instr, unsigned long addr);
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-unsigned long branch_target(const unsigned int *instr);
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-unsigned int translate_branch(const unsigned int *dest,
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-			      const unsigned int *src);
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-extern bool is_conditional_branch(unsigned int instr);
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+static inline unsigned long patch_site_addr(s32 *site)
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+{
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+	return (unsigned long)site + *site;
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+}
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+
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+static inline int patch_instruction_site(s32 *site, struct ppc_inst instr)
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+{
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+	return patch_instruction((struct ppc_inst *)patch_site_addr(site), instr);
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+}
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+
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+static inline int patch_branch_site(s32 *site, unsigned long target, int flags)
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+{
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+	return patch_branch((struct ppc_inst *)patch_site_addr(site), target, flags);
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+}
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+
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+static inline int modify_instruction(unsigned int *addr, unsigned int clr,
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+				     unsigned int set)
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+{
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+	return patch_instruction((struct ppc_inst *)addr, ppc_inst((*addr & ~clr) | set));
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+}
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+
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+static inline int modify_instruction_site(s32 *site, unsigned int clr, unsigned int set)
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+{
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+	return modify_instruction((unsigned int *)patch_site_addr(site), clr, set);
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+}
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+
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+int instr_is_relative_branch(struct ppc_inst instr);
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+int instr_is_relative_link_branch(struct ppc_inst instr);
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+int instr_is_branch_to_addr(const struct ppc_inst *instr, unsigned long addr);
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+unsigned long branch_target(const struct ppc_inst *instr);
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+int translate_branch(struct ppc_inst *instr, const struct ppc_inst *dest,
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+		     const struct ppc_inst *src);
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+extern bool is_conditional_branch(struct ppc_inst instr);
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 #ifdef CONFIG_PPC_BOOK3E_64
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 void __patch_exception(int exc, unsigned long addr);
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 #define patch_exception(exc, name) do { \