111 строки
3.7 KiB
C
111 строки
3.7 KiB
C
/*
|
|
* Copyright (C) 2013 Huawei Ltd.
|
|
* Author: Jiang Liu <liuj97@gmail.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#ifndef __ASM_INSN_H
|
|
#define __ASM_INSN_H
|
|
#include <linux/types.h>
|
|
|
|
/* A64 instructions are always 32 bits. */
|
|
#define AARCH64_INSN_SIZE 4
|
|
|
|
#ifndef __ASSEMBLY__
|
|
/*
|
|
* ARM Architecture Reference Manual for ARMv8 Profile-A, Issue A.a
|
|
* Section C3.1 "A64 instruction index by encoding":
|
|
* AArch64 main encoding table
|
|
* Bit position
|
|
* 28 27 26 25 Encoding Group
|
|
* 0 0 - - Unallocated
|
|
* 1 0 0 - Data processing, immediate
|
|
* 1 0 1 - Branch, exception generation and system instructions
|
|
* - 1 - 0 Loads and stores
|
|
* - 1 0 1 Data processing - register
|
|
* 0 1 1 1 Data processing - SIMD and floating point
|
|
* 1 1 1 1 Data processing - SIMD and floating point
|
|
* "-" means "don't care"
|
|
*/
|
|
enum aarch64_insn_encoding_class {
|
|
AARCH64_INSN_CLS_UNKNOWN, /* UNALLOCATED */
|
|
AARCH64_INSN_CLS_DP_IMM, /* Data processing - immediate */
|
|
AARCH64_INSN_CLS_DP_REG, /* Data processing - register */
|
|
AARCH64_INSN_CLS_DP_FPSIMD, /* Data processing - SIMD and FP */
|
|
AARCH64_INSN_CLS_LDST, /* Loads and stores */
|
|
AARCH64_INSN_CLS_BR_SYS, /* Branch, exception generation and
|
|
* system instructions */
|
|
};
|
|
|
|
enum aarch64_insn_hint_op {
|
|
AARCH64_INSN_HINT_NOP = 0x0 << 5,
|
|
AARCH64_INSN_HINT_YIELD = 0x1 << 5,
|
|
AARCH64_INSN_HINT_WFE = 0x2 << 5,
|
|
AARCH64_INSN_HINT_WFI = 0x3 << 5,
|
|
AARCH64_INSN_HINT_SEV = 0x4 << 5,
|
|
AARCH64_INSN_HINT_SEVL = 0x5 << 5,
|
|
};
|
|
|
|
enum aarch64_insn_imm_type {
|
|
AARCH64_INSN_IMM_ADR,
|
|
AARCH64_INSN_IMM_26,
|
|
AARCH64_INSN_IMM_19,
|
|
AARCH64_INSN_IMM_16,
|
|
AARCH64_INSN_IMM_14,
|
|
AARCH64_INSN_IMM_12,
|
|
AARCH64_INSN_IMM_9,
|
|
AARCH64_INSN_IMM_MAX
|
|
};
|
|
|
|
enum aarch64_insn_branch_type {
|
|
AARCH64_INSN_BRANCH_NOLINK,
|
|
AARCH64_INSN_BRANCH_LINK,
|
|
};
|
|
|
|
#define __AARCH64_INSN_FUNCS(abbr, mask, val) \
|
|
static __always_inline bool aarch64_insn_is_##abbr(u32 code) \
|
|
{ return (code & (mask)) == (val); } \
|
|
static __always_inline u32 aarch64_insn_get_##abbr##_value(void) \
|
|
{ return (val); }
|
|
|
|
__AARCH64_INSN_FUNCS(b, 0xFC000000, 0x14000000)
|
|
__AARCH64_INSN_FUNCS(bl, 0xFC000000, 0x94000000)
|
|
__AARCH64_INSN_FUNCS(svc, 0xFFE0001F, 0xD4000001)
|
|
__AARCH64_INSN_FUNCS(hvc, 0xFFE0001F, 0xD4000002)
|
|
__AARCH64_INSN_FUNCS(smc, 0xFFE0001F, 0xD4000003)
|
|
__AARCH64_INSN_FUNCS(brk, 0xFFE0001F, 0xD4200000)
|
|
__AARCH64_INSN_FUNCS(hint, 0xFFFFF01F, 0xD503201F)
|
|
|
|
#undef __AARCH64_INSN_FUNCS
|
|
|
|
bool aarch64_insn_is_nop(u32 insn);
|
|
|
|
int aarch64_insn_read(void *addr, u32 *insnp);
|
|
int aarch64_insn_write(void *addr, u32 insn);
|
|
enum aarch64_insn_encoding_class aarch64_get_insn_class(u32 insn);
|
|
u32 aarch64_insn_encode_immediate(enum aarch64_insn_imm_type type,
|
|
u32 insn, u64 imm);
|
|
u32 aarch64_insn_gen_branch_imm(unsigned long pc, unsigned long addr,
|
|
enum aarch64_insn_branch_type type);
|
|
u32 aarch64_insn_gen_hint(enum aarch64_insn_hint_op op);
|
|
u32 aarch64_insn_gen_nop(void);
|
|
|
|
bool aarch64_insn_hotpatch_safe(u32 old_insn, u32 new_insn);
|
|
|
|
int aarch64_insn_patch_text_nosync(void *addr, u32 insn);
|
|
int aarch64_insn_patch_text_sync(void *addrs[], u32 insns[], int cnt);
|
|
int aarch64_insn_patch_text(void *addrs[], u32 insns[], int cnt);
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* __ASM_INSN_H */
|