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/* SPDX-License-Identifier: GPL-2.0-or-later */
#ifndef _ASM_X86_INAT_H
#define _ASM_X86_INAT_H
/*
* x86 instruction attributes
*
* Written by Masami Hiramatsu <[email protected]>
*/
#include <asm/inat_types.h> /* __ignore_sync_check__ */
/*
* Internal bits. Don't use bitmasks directly, because these bits are
* unstable. You should use checking functions.
*/
#define INAT_OPCODE_TABLE_SIZE 256
#define INAT_GROUP_TABLE_SIZE 8
/* Legacy last prefixes */
#define INAT_PFX_OPNDSZ 1 /* 0x66 */ /* LPFX1 */
#define INAT_PFX_REPE 2 /* 0xF3 */ /* LPFX2 */
#define INAT_PFX_REPNE 3 /* 0xF2 */ /* LPFX3 */
/* Other Legacy prefixes */
#define INAT_PFX_LOCK 4 /* 0xF0 */
#define INAT_PFX_CS 5 /* 0x2E */
#define INAT_PFX_DS 6 /* 0x3E */
#define INAT_PFX_ES 7 /* 0x26 */
#define INAT_PFX_FS 8 /* 0x64 */
#define INAT_PFX_GS 9 /* 0x65 */
#define INAT_PFX_SS 10 /* 0x36 */
#define INAT_PFX_ADDRSZ 11 /* 0x67 */
/* x86-64 REX prefix */
#define INAT_PFX_REX 12 /* 0x4X */
/* AVX VEX prefixes */
#define INAT_PFX_VEX2 13 /* 2-bytes VEX prefix */
#define INAT_PFX_VEX3 14 /* 3-bytes VEX prefix */
#define INAT_PFX_EVEX 15 /* EVEX prefix */
#define INAT_LSTPFX_MAX 3
#define INAT_LGCPFX_MAX 11
/* Immediate size */
#define INAT_IMM_BYTE 1
#define INAT_IMM_WORD 2
#define INAT_IMM_DWORD 3
#define INAT_IMM_QWORD 4
#define INAT_IMM_PTR 5
#define INAT_IMM_VWORD32 6
#define INAT_IMM_VWORD 7
/* Legacy prefix */
#define INAT_PFX_OFFS 0
#define INAT_PFX_BITS 4
#define INAT_PFX_MAX ((1 << INAT_PFX_BITS) - 1)
#define INAT_PFX_MASK (INAT_PFX_MAX << INAT_PFX_OFFS)
/* Escape opcodes */
#define INAT_ESC_OFFS (INAT_PFX_OFFS + INAT_PFX_BITS)
#define INAT_ESC_BITS 2
#define INAT_ESC_MAX ((1 << INAT_ESC_BITS) - 1)
#define INAT_ESC_MASK (INAT_ESC_MAX << INAT_ESC_OFFS)
/* Group opcodes (1-16) */
#define INAT_GRP_OFFS (INAT_ESC_OFFS + INAT_ESC_BITS)
#define INAT_GRP_BITS 5
#define INAT_GRP_MAX ((1 << INAT_GRP_BITS) - 1)
#define INAT_GRP_MASK (INAT_GRP_MAX << INAT_GRP_OFFS)
/* Immediates */
#define INAT_IMM_OFFS (INAT_GRP_OFFS + INAT_GRP_BITS)
#define INAT_IMM_BITS 3
#define INAT_IMM_MASK (((1 << INAT_IMM_BITS) - 1) << INAT_IMM_OFFS)
/* Flags */
#define INAT_FLAG_OFFS (INAT_IMM_OFFS + INAT_IMM_BITS)
#define INAT_MODRM (1 << (INAT_FLAG_OFFS))
#define INAT_FORCE64 (1 << (INAT_FLAG_OFFS + 1))
#define INAT_SCNDIMM (1 << (INAT_FLAG_OFFS + 2))
#define INAT_MOFFSET (1 << (INAT_FLAG_OFFS + 3))
#define INAT_VARIANT (1 << (INAT_FLAG_OFFS + 4))
#define INAT_VEXOK (1 << (INAT_FLAG_OFFS + 5))
#define INAT_VEXONLY (1 << (INAT_FLAG_OFFS + 6))
#define INAT_EVEXONLY (1 << (INAT_FLAG_OFFS + 7))
/* Attribute making macros for attribute tables */
#define INAT_MAKE_PREFIX(pfx) (pfx << INAT_PFX_OFFS)
#define INAT_MAKE_ESCAPE(esc) (esc << INAT_ESC_OFFS)
#define INAT_MAKE_GROUP(grp) ((grp << INAT_GRP_OFFS) | INAT_MODRM)
#define INAT_MAKE_IMM(imm) (imm << INAT_IMM_OFFS)
/* Identifiers for segment registers */
#define INAT_SEG_REG_IGNORE 0
#define INAT_SEG_REG_DEFAULT 1
#define INAT_SEG_REG_CS 2
#define INAT_SEG_REG_SS 3
#define INAT_SEG_REG_DS 4
#define INAT_SEG_REG_ES 5
#define INAT_SEG_REG_FS 6
#define INAT_SEG_REG_GS 7
/* Attribute search APIs */
extern insn_attr_t inat_get_opcode_attribute(insn_byte_t opcode);
extern int inat_get_last_prefix_id(insn_byte_t last_pfx);
extern insn_attr_t inat_get_escape_attribute(insn_byte_t opcode,
int lpfx_id,
insn_attr_t esc_attr);
extern insn_attr_t inat_get_group_attribute(insn_byte_t modrm,
int lpfx_id,
insn_attr_t esc_attr);
extern insn_attr_t inat_get_avx_attribute(insn_byte_t opcode,
insn_byte_t vex_m,
insn_byte_t vex_pp);
/* Attribute checking functions */
static inline int inat_is_legacy_prefix(insn_attr_t attr)
{
attr &= INAT_PFX_MASK;
return attr && attr <= INAT_LGCPFX_MAX;
}
static inline int inat_is_address_size_prefix(insn_attr_t attr)
{
return (attr & INAT_PFX_MASK) == INAT_PFX_ADDRSZ;
}
static inline int inat_is_operand_size_prefix(insn_attr_t attr)
{
return (attr & INAT_PFX_MASK) == INAT_PFX_OPNDSZ;
}
static inline int inat_is_rex_prefix(insn_attr_t attr)
{
return (attr & INAT_PFX_MASK) == INAT_PFX_REX;
}
static inline int inat_last_prefix_id(insn_attr_t attr)
{
if ((attr & INAT_PFX_MASK) > INAT_LSTPFX_MAX)
return 0;
else
return attr & INAT_PFX_MASK;
}
static inline int inat_is_vex_prefix(insn_attr_t attr)
{
attr &= INAT_PFX_MASK;
return attr == INAT_PFX_VEX2 || attr == INAT_PFX_VEX3 ||
attr == INAT_PFX_EVEX;
}
static inline int inat_is_evex_prefix(insn_attr_t attr)
{
return (attr & INAT_PFX_MASK) == INAT_PFX_EVEX;
}
static inline int inat_is_vex3_prefix(insn_attr_t attr)
{
return (attr & INAT_PFX_MASK) == INAT_PFX_VEX3;
}
static inline int inat_is_escape(insn_attr_t attr)
{
return attr & INAT_ESC_MASK;
}
static inline int inat_escape_id(insn_attr_t attr)
{
return (attr & INAT_ESC_MASK) >> INAT_ESC_OFFS;
}
static inline int inat_is_group(insn_attr_t attr)
{
return attr & INAT_GRP_MASK;
}
static inline int inat_group_id(insn_attr_t attr)
{
return (attr & INAT_GRP_MASK) >> INAT_GRP_OFFS;
}
static inline int inat_group_common_attribute(insn_attr_t attr)
{
return attr & ~INAT_GRP_MASK;
}
static inline int inat_has_immediate(insn_attr_t attr)
{
return attr & INAT_IMM_MASK;
}
static inline int inat_immediate_size(insn_attr_t attr)
{
return (attr & INAT_IMM_MASK) >> INAT_IMM_OFFS;
}
static inline int inat_has_modrm(insn_attr_t attr)
{
return attr & INAT_MODRM;
}
static inline int inat_is_force64(insn_attr_t attr)
{
return attr & INAT_FORCE64;
}
static inline int inat_has_second_immediate(insn_attr_t attr)
{
return attr & INAT_SCNDIMM;
}
static inline int inat_has_moffset(insn_attr_t attr)
{
return attr & INAT_MOFFSET;
}
static inline int inat_has_variant(insn_attr_t attr)
{
return attr & INAT_VARIANT;
}
static inline int inat_accept_vex(insn_attr_t attr)
{
return attr & INAT_VEXOK;
}
static inline int inat_must_vex(insn_attr_t attr)
{
return attr & (INAT_VEXONLY | INAT_EVEXONLY);
}
static inline int inat_must_evex(insn_attr_t attr)
{
return attr & INAT_EVEXONLY;
}
#endif
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