add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/arch/x86/include/asm/insn.h
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@@ -1,27 +1,14 @@
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
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 #ifndef _ASM_X86_INSN_H
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 #define _ASM_X86_INSN_H
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 /*
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  * x86 instruction analysis
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  *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (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, write to the Free Software
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- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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- *
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  * Copyright (C) IBM Corporation, 2009
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  */
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9
 
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 /* insn_attr_t is defined in inat.h */
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-#include <asm/inat.h>
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+#include <asm/inat.h> /* __ignore_sync_check__ */
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 struct insn_field {
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 	union {
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@@ -58,6 +45,7 @@
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 		struct insn_field immediate2;	/* for 64bit imm or seg16 */
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 	};
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+	int	emulate_prefix_size;
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 	insn_attr_t attr;
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 	unsigned char opnd_bytes;
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 	unsigned char addr_bytes;
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@@ -99,13 +87,25 @@
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 #define X86_VEX_M_MAX	0x1f			/* VEX3.M Maximum value */
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 extern void insn_init(struct insn *insn, const void *kaddr, int buf_len, int x86_64);
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-extern void insn_get_prefixes(struct insn *insn);
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-extern void insn_get_opcode(struct insn *insn);
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-extern void insn_get_modrm(struct insn *insn);
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-extern void insn_get_sib(struct insn *insn);
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-extern void insn_get_displacement(struct insn *insn);
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-extern void insn_get_immediate(struct insn *insn);
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-extern void insn_get_length(struct insn *insn);
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+extern int insn_get_prefixes(struct insn *insn);
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+extern int insn_get_opcode(struct insn *insn);
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+extern int insn_get_modrm(struct insn *insn);
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+extern int insn_get_sib(struct insn *insn);
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+extern int insn_get_displacement(struct insn *insn);
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+extern int insn_get_immediate(struct insn *insn);
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+extern int insn_get_length(struct insn *insn);
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+
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+enum insn_mode {
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+	INSN_MODE_32,
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+	INSN_MODE_64,
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+	/* Mode is determined by the current kernel build. */
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+	INSN_MODE_KERN,
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+	INSN_NUM_MODES,
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+};
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+
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+extern int insn_decode(struct insn *insn, const void *kaddr, int buf_len, enum insn_mode m);
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+
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+#define insn_decode_kernel(_insn, _ptr) insn_decode((_insn), (_ptr), MAX_INSN_SIZE, INSN_MODE_KERN)
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 /* Attribute will be determined after getting ModRM (for opcode groups) */
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 static inline void insn_get_attribute(struct insn *insn)
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@@ -141,6 +141,11 @@
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 	return (insn->vex_prefix.nbytes == 4);
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 }
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+static inline int insn_has_emulate_prefix(struct insn *insn)
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+{
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+	return !!insn->emulate_prefix_size;
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+}
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+
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 /* Ensure this instruction is decoded completely */
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 static inline int insn_complete(struct insn *insn)
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 {