mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 20:23:57 +08:00
83803d97da
This patch introdces 'checker' to decoding phase, and calls checkers when instruction decoding. This allows further decoding for specific instructions. This patch introduces a stub call of checkers in kprobe arch_prepare_kprobe() as an example and for further expansion. Signed-off-by: Wang Nan <wangnan0@huawei.com> Reviewed-by: Jon Medhurst <tixy@linaro.org> Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Jon Medhurst <tixy@linaro.org>
102 lines
2.4 KiB
C
102 lines
2.4 KiB
C
/*
|
|
* arch/arm/probes/decode-thumb.h
|
|
*
|
|
* Copyright 2013 Linaro Ltd.
|
|
* Written by: David A. Long
|
|
*
|
|
* The code contained herein is licensed under the GNU General Public
|
|
* License. You may obtain a copy of the GNU General Public License
|
|
* Version 2 or later at the following locations:
|
|
*
|
|
* http://www.opensource.org/licenses/gpl-license.html
|
|
* http://www.gnu.org/copyleft/gpl.html
|
|
*/
|
|
|
|
#ifndef _ARM_KERNEL_PROBES_THUMB_H
|
|
#define _ARM_KERNEL_PROBES_THUMB_H
|
|
|
|
#include "decode.h"
|
|
|
|
/*
|
|
* True if current instruction is in an IT block.
|
|
*/
|
|
#define in_it_block(cpsr) ((cpsr & 0x06000c00) != 0x00000000)
|
|
|
|
/*
|
|
* Return the condition code to check for the currently executing instruction.
|
|
* This is in ITSTATE<7:4> which is in CPSR<15:12> but is only valid if
|
|
* in_it_block returns true.
|
|
*/
|
|
#define current_cond(cpsr) ((cpsr >> 12) & 0xf)
|
|
|
|
enum probes_t32_action {
|
|
PROBES_T32_EMULATE_NONE,
|
|
PROBES_T32_SIMULATE_NOP,
|
|
PROBES_T32_LDMSTM,
|
|
PROBES_T32_LDRDSTRD,
|
|
PROBES_T32_TABLE_BRANCH,
|
|
PROBES_T32_TST,
|
|
PROBES_T32_CMP,
|
|
PROBES_T32_MOV,
|
|
PROBES_T32_ADDSUB,
|
|
PROBES_T32_LOGICAL,
|
|
PROBES_T32_ADDWSUBW_PC,
|
|
PROBES_T32_ADDWSUBW,
|
|
PROBES_T32_MOVW,
|
|
PROBES_T32_SAT,
|
|
PROBES_T32_BITFIELD,
|
|
PROBES_T32_SEV,
|
|
PROBES_T32_WFE,
|
|
PROBES_T32_MRS,
|
|
PROBES_T32_BRANCH_COND,
|
|
PROBES_T32_BRANCH,
|
|
PROBES_T32_PLDI,
|
|
PROBES_T32_LDR_LIT,
|
|
PROBES_T32_LDRSTR,
|
|
PROBES_T32_SIGN_EXTEND,
|
|
PROBES_T32_MEDIA,
|
|
PROBES_T32_REVERSE,
|
|
PROBES_T32_MUL_ADD,
|
|
PROBES_T32_MUL_ADD2,
|
|
PROBES_T32_MUL_ADD_LONG,
|
|
NUM_PROBES_T32_ACTIONS
|
|
};
|
|
|
|
enum probes_t16_action {
|
|
PROBES_T16_ADD_SP,
|
|
PROBES_T16_CBZ,
|
|
PROBES_T16_SIGN_EXTEND,
|
|
PROBES_T16_PUSH,
|
|
PROBES_T16_POP,
|
|
PROBES_T16_SEV,
|
|
PROBES_T16_WFE,
|
|
PROBES_T16_IT,
|
|
PROBES_T16_CMP,
|
|
PROBES_T16_ADDSUB,
|
|
PROBES_T16_LOGICAL,
|
|
PROBES_T16_BLX,
|
|
PROBES_T16_HIREGOPS,
|
|
PROBES_T16_LDR_LIT,
|
|
PROBES_T16_LDRHSTRH,
|
|
PROBES_T16_LDRSTR,
|
|
PROBES_T16_ADR,
|
|
PROBES_T16_LDMSTM,
|
|
PROBES_T16_BRANCH_COND,
|
|
PROBES_T16_BRANCH,
|
|
NUM_PROBES_T16_ACTIONS
|
|
};
|
|
|
|
extern const union decode_item probes_decode_thumb32_table[];
|
|
extern const union decode_item probes_decode_thumb16_table[];
|
|
|
|
enum probes_insn __kprobes
|
|
thumb16_probes_decode_insn(probes_opcode_t insn, struct arch_probes_insn *asi,
|
|
bool emulate, const union decode_action *actions,
|
|
const struct decode_checker *checkers[]);
|
|
enum probes_insn __kprobes
|
|
thumb32_probes_decode_insn(probes_opcode_t insn, struct arch_probes_insn *asi,
|
|
bool emulate, const union decode_action *actions,
|
|
const struct decode_checker *checkers[]);
|
|
|
|
#endif
|