change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/tools/objtool/arch.h
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@@ -1,18 +1,6 @@
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
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 /*
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  * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
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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 2
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- * of the License, or (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, see <http://www.gnu.org/licenses/>.
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  */
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 #ifndef _ARCH_H
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@@ -20,27 +8,34 @@
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8
 
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 #include <stdbool.h>
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 #include <linux/list.h>
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-#include "elf.h"
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+#include "objtool.h"
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 #include "cfi.h"
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-#define INSN_JUMP_CONDITIONAL	1
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-#define INSN_JUMP_UNCONDITIONAL	2
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-#define INSN_JUMP_DYNAMIC	3
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-#define INSN_CALL		4
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-#define INSN_CALL_DYNAMIC	5
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-#define INSN_RETURN		6
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-#define INSN_CONTEXT_SWITCH	7
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-#define INSN_STACK		8
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-#define INSN_BUG		9
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-#define INSN_NOP		10
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-#define INSN_OTHER		11
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-#define INSN_LAST		INSN_OTHER
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+enum insn_type {
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+	INSN_JUMP_CONDITIONAL,
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+	INSN_JUMP_UNCONDITIONAL,
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+	INSN_JUMP_DYNAMIC,
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+	INSN_JUMP_DYNAMIC_CONDITIONAL,
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+	INSN_CALL,
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+	INSN_CALL_DYNAMIC,
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+	INSN_RETURN,
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+	INSN_CONTEXT_SWITCH,
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+	INSN_BUG,
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+	INSN_NOP,
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+	INSN_STAC,
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+	INSN_CLAC,
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+	INSN_STD,
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+	INSN_CLD,
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+	INSN_TRAP,
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+	INSN_OTHER,
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+};
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 enum op_dest_type {
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 	OP_DEST_REG,
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 	OP_DEST_REG_INDIRECT,
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 	OP_DEST_MEM,
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 	OP_DEST_PUSH,
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+	OP_DEST_PUSHF,
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 	OP_DEST_LEAVE,
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 };
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@@ -55,6 +50,7 @@
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 	OP_SRC_REG_INDIRECT,
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 	OP_SRC_CONST,
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 	OP_SRC_POP,
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+	OP_SRC_POPF,
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 	OP_SRC_ADD,
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 	OP_SRC_AND,
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 };
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@@ -68,15 +64,34 @@
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 struct stack_op {
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 	struct op_dest dest;
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 	struct op_src src;
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+	struct list_head list;
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 };
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-void arch_initial_func_cfi_state(struct cfi_state *state);
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+struct instruction;
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-int arch_decode_instruction(struct elf *elf, struct section *sec,
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+void arch_initial_func_cfi_state(struct cfi_init_state *state);
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+
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+int arch_decode_instruction(const struct elf *elf, const struct section *sec,
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 			    unsigned long offset, unsigned int maxlen,
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-			    unsigned int *len, unsigned char *type,
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-			    unsigned long *immediate, struct stack_op *op);
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+			    unsigned int *len, enum insn_type *type,
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+			    unsigned long *immediate,
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+			    struct list_head *ops_list);
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 bool arch_callee_saved_reg(unsigned char reg);
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+unsigned long arch_jump_destination(struct instruction *insn);
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+
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+unsigned long arch_dest_reloc_offset(int addend);
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+
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+const char *arch_nop_insn(int len);
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+const char *arch_ret_insn(int len);
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+
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+int arch_decode_hint_reg(u8 sp_reg, int *base);
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+
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+bool arch_is_retpoline(struct symbol *sym);
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+bool arch_is_rethunk(struct symbol *sym);
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+bool arch_is_embedded_insn(struct symbol *sym);
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+
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+int arch_rewrite_retpolines(struct objtool_file *file);
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+
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 #endif /* _ARCH_H */