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881 lines
32 KiB
881 lines
32 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* arch/arm/probes/decode-thumb.c |
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* |
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* Copyright (C) 2011 Jon Medhurst <[email protected]>. |
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*/ |
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#include <linux/stddef.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include "decode.h" |
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#include "decode-thumb.h" |
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static const union decode_item t32_table_1110_100x_x0xx[] = { |
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/* Load/store multiple instructions */ |
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/* Rn is PC 1110 100x x0xx 1111 xxxx xxxx xxxx xxxx */ |
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DECODE_REJECT (0xfe4f0000, 0xe80f0000), |
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/* SRS 1110 1000 00x0 xxxx xxxx xxxx xxxx xxxx */ |
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/* RFE 1110 1000 00x1 xxxx xxxx xxxx xxxx xxxx */ |
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DECODE_REJECT (0xffc00000, 0xe8000000), |
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/* SRS 1110 1001 10x0 xxxx xxxx xxxx xxxx xxxx */ |
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/* RFE 1110 1001 10x1 xxxx xxxx xxxx xxxx xxxx */ |
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DECODE_REJECT (0xffc00000, 0xe9800000), |
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/* STM Rn, {...pc} 1110 100x x0x0 xxxx 1xxx xxxx xxxx xxxx */ |
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DECODE_REJECT (0xfe508000, 0xe8008000), |
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/* LDM Rn, {...lr,pc} 1110 100x x0x1 xxxx 11xx xxxx xxxx xxxx */ |
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DECODE_REJECT (0xfe50c000, 0xe810c000), |
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/* LDM/STM Rn, {...sp} 1110 100x x0xx xxxx xx1x xxxx xxxx xxxx */ |
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DECODE_REJECT (0xfe402000, 0xe8002000), |
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/* STMIA 1110 1000 10x0 xxxx xxxx xxxx xxxx xxxx */ |
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/* LDMIA 1110 1000 10x1 xxxx xxxx xxxx xxxx xxxx */ |
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/* STMDB 1110 1001 00x0 xxxx xxxx xxxx xxxx xxxx */ |
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/* LDMDB 1110 1001 00x1 xxxx xxxx xxxx xxxx xxxx */ |
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DECODE_CUSTOM (0xfe400000, 0xe8000000, PROBES_T32_LDMSTM), |
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DECODE_END |
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}; |
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static const union decode_item t32_table_1110_100x_x1xx[] = { |
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/* Load/store dual, load/store exclusive, table branch */ |
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/* STRD (immediate) 1110 1000 x110 xxxx xxxx xxxx xxxx xxxx */ |
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/* LDRD (immediate) 1110 1000 x111 xxxx xxxx xxxx xxxx xxxx */ |
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DECODE_OR (0xff600000, 0xe8600000), |
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/* STRD (immediate) 1110 1001 x1x0 xxxx xxxx xxxx xxxx xxxx */ |
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/* LDRD (immediate) 1110 1001 x1x1 xxxx xxxx xxxx xxxx xxxx */ |
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DECODE_EMULATEX (0xff400000, 0xe9400000, PROBES_T32_LDRDSTRD, |
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REGS(NOPCWB, NOSPPC, NOSPPC, 0, 0)), |
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/* TBB 1110 1000 1101 xxxx xxxx xxxx 0000 xxxx */ |
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/* TBH 1110 1000 1101 xxxx xxxx xxxx 0001 xxxx */ |
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DECODE_SIMULATEX(0xfff000e0, 0xe8d00000, PROBES_T32_TABLE_BRANCH, |
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REGS(NOSP, 0, 0, 0, NOSPPC)), |
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/* STREX 1110 1000 0100 xxxx xxxx xxxx xxxx xxxx */ |
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/* LDREX 1110 1000 0101 xxxx xxxx xxxx xxxx xxxx */ |
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/* STREXB 1110 1000 1100 xxxx xxxx xxxx 0100 xxxx */ |
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/* STREXH 1110 1000 1100 xxxx xxxx xxxx 0101 xxxx */ |
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/* STREXD 1110 1000 1100 xxxx xxxx xxxx 0111 xxxx */ |
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/* LDREXB 1110 1000 1101 xxxx xxxx xxxx 0100 xxxx */ |
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/* LDREXH 1110 1000 1101 xxxx xxxx xxxx 0101 xxxx */ |
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/* LDREXD 1110 1000 1101 xxxx xxxx xxxx 0111 xxxx */ |
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/* And unallocated instructions... */ |
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DECODE_END |
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}; |
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static const union decode_item t32_table_1110_101x[] = { |
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/* Data-processing (shifted register) */ |
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/* TST 1110 1010 0001 xxxx xxxx 1111 xxxx xxxx */ |
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/* TEQ 1110 1010 1001 xxxx xxxx 1111 xxxx xxxx */ |
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DECODE_EMULATEX (0xff700f00, 0xea100f00, PROBES_T32_TST, |
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REGS(NOSPPC, 0, 0, 0, NOSPPC)), |
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/* CMN 1110 1011 0001 xxxx xxxx 1111 xxxx xxxx */ |
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DECODE_OR (0xfff00f00, 0xeb100f00), |
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/* CMP 1110 1011 1011 xxxx xxxx 1111 xxxx xxxx */ |
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DECODE_EMULATEX (0xfff00f00, 0xebb00f00, PROBES_T32_TST, |
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REGS(NOPC, 0, 0, 0, NOSPPC)), |
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/* MOV 1110 1010 010x 1111 xxxx xxxx xxxx xxxx */ |
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/* MVN 1110 1010 011x 1111 xxxx xxxx xxxx xxxx */ |
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DECODE_EMULATEX (0xffcf0000, 0xea4f0000, PROBES_T32_MOV, |
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REGS(0, 0, NOSPPC, 0, NOSPPC)), |
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/* ??? 1110 1010 101x xxxx xxxx xxxx xxxx xxxx */ |
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/* ??? 1110 1010 111x xxxx xxxx xxxx xxxx xxxx */ |
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DECODE_REJECT (0xffa00000, 0xeaa00000), |
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/* ??? 1110 1011 001x xxxx xxxx xxxx xxxx xxxx */ |
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DECODE_REJECT (0xffe00000, 0xeb200000), |
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/* ??? 1110 1011 100x xxxx xxxx xxxx xxxx xxxx */ |
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DECODE_REJECT (0xffe00000, 0xeb800000), |
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/* ??? 1110 1011 111x xxxx xxxx xxxx xxxx xxxx */ |
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DECODE_REJECT (0xffe00000, 0xebe00000), |
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/* ADD/SUB SP, SP, Rm, LSL #0..3 */ |
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/* 1110 1011 x0xx 1101 x000 1101 xx00 xxxx */ |
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DECODE_EMULATEX (0xff4f7f30, 0xeb0d0d00, PROBES_T32_ADDSUB, |
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REGS(SP, 0, SP, 0, NOSPPC)), |
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/* ADD/SUB SP, SP, Rm, shift */ |
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/* 1110 1011 x0xx 1101 xxxx 1101 xxxx xxxx */ |
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DECODE_REJECT (0xff4f0f00, 0xeb0d0d00), |
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/* ADD/SUB Rd, SP, Rm, shift */ |
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/* 1110 1011 x0xx 1101 xxxx xxxx xxxx xxxx */ |
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DECODE_EMULATEX (0xff4f0000, 0xeb0d0000, PROBES_T32_ADDSUB, |
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REGS(SP, 0, NOPC, 0, NOSPPC)), |
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/* AND 1110 1010 000x xxxx xxxx xxxx xxxx xxxx */ |
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/* BIC 1110 1010 001x xxxx xxxx xxxx xxxx xxxx */ |
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/* ORR 1110 1010 010x xxxx xxxx xxxx xxxx xxxx */ |
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/* ORN 1110 1010 011x xxxx xxxx xxxx xxxx xxxx */ |
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/* EOR 1110 1010 100x xxxx xxxx xxxx xxxx xxxx */ |
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/* PKH 1110 1010 110x xxxx xxxx xxxx xxxx xxxx */ |
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/* ADD 1110 1011 000x xxxx xxxx xxxx xxxx xxxx */ |
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/* ADC 1110 1011 010x xxxx xxxx xxxx xxxx xxxx */ |
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/* SBC 1110 1011 011x xxxx xxxx xxxx xxxx xxxx */ |
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/* SUB 1110 1011 101x xxxx xxxx xxxx xxxx xxxx */ |
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/* RSB 1110 1011 110x xxxx xxxx xxxx xxxx xxxx */ |
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DECODE_EMULATEX (0xfe000000, 0xea000000, PROBES_T32_LOGICAL, |
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REGS(NOSPPC, 0, NOSPPC, 0, NOSPPC)), |
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DECODE_END |
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}; |
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static const union decode_item t32_table_1111_0x0x___0[] = { |
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/* Data-processing (modified immediate) */ |
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/* TST 1111 0x00 0001 xxxx 0xxx 1111 xxxx xxxx */ |
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/* TEQ 1111 0x00 1001 xxxx 0xxx 1111 xxxx xxxx */ |
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DECODE_EMULATEX (0xfb708f00, 0xf0100f00, PROBES_T32_TST, |
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REGS(NOSPPC, 0, 0, 0, 0)), |
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/* CMN 1111 0x01 0001 xxxx 0xxx 1111 xxxx xxxx */ |
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DECODE_OR (0xfbf08f00, 0xf1100f00), |
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/* CMP 1111 0x01 1011 xxxx 0xxx 1111 xxxx xxxx */ |
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DECODE_EMULATEX (0xfbf08f00, 0xf1b00f00, PROBES_T32_CMP, |
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REGS(NOPC, 0, 0, 0, 0)), |
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/* MOV 1111 0x00 010x 1111 0xxx xxxx xxxx xxxx */ |
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/* MVN 1111 0x00 011x 1111 0xxx xxxx xxxx xxxx */ |
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DECODE_EMULATEX (0xfbcf8000, 0xf04f0000, PROBES_T32_MOV, |
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REGS(0, 0, NOSPPC, 0, 0)), |
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/* ??? 1111 0x00 101x xxxx 0xxx xxxx xxxx xxxx */ |
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DECODE_REJECT (0xfbe08000, 0xf0a00000), |
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/* ??? 1111 0x00 110x xxxx 0xxx xxxx xxxx xxxx */ |
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/* ??? 1111 0x00 111x xxxx 0xxx xxxx xxxx xxxx */ |
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DECODE_REJECT (0xfbc08000, 0xf0c00000), |
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/* ??? 1111 0x01 001x xxxx 0xxx xxxx xxxx xxxx */ |
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DECODE_REJECT (0xfbe08000, 0xf1200000), |
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/* ??? 1111 0x01 100x xxxx 0xxx xxxx xxxx xxxx */ |
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DECODE_REJECT (0xfbe08000, 0xf1800000), |
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/* ??? 1111 0x01 111x xxxx 0xxx xxxx xxxx xxxx */ |
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DECODE_REJECT (0xfbe08000, 0xf1e00000), |
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/* ADD Rd, SP, #imm 1111 0x01 000x 1101 0xxx xxxx xxxx xxxx */ |
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/* SUB Rd, SP, #imm 1111 0x01 101x 1101 0xxx xxxx xxxx xxxx */ |
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DECODE_EMULATEX (0xfb4f8000, 0xf10d0000, PROBES_T32_ADDSUB, |
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REGS(SP, 0, NOPC, 0, 0)), |
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/* AND 1111 0x00 000x xxxx 0xxx xxxx xxxx xxxx */ |
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/* BIC 1111 0x00 001x xxxx 0xxx xxxx xxxx xxxx */ |
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/* ORR 1111 0x00 010x xxxx 0xxx xxxx xxxx xxxx */ |
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/* ORN 1111 0x00 011x xxxx 0xxx xxxx xxxx xxxx */ |
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/* EOR 1111 0x00 100x xxxx 0xxx xxxx xxxx xxxx */ |
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/* ADD 1111 0x01 000x xxxx 0xxx xxxx xxxx xxxx */ |
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/* ADC 1111 0x01 010x xxxx 0xxx xxxx xxxx xxxx */ |
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/* SBC 1111 0x01 011x xxxx 0xxx xxxx xxxx xxxx */ |
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/* SUB 1111 0x01 101x xxxx 0xxx xxxx xxxx xxxx */ |
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/* RSB 1111 0x01 110x xxxx 0xxx xxxx xxxx xxxx */ |
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DECODE_EMULATEX (0xfa008000, 0xf0000000, PROBES_T32_LOGICAL, |
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REGS(NOSPPC, 0, NOSPPC, 0, 0)), |
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DECODE_END |
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}; |
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static const union decode_item t32_table_1111_0x1x___0[] = { |
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/* Data-processing (plain binary immediate) */ |
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/* ADDW Rd, PC, #imm 1111 0x10 0000 1111 0xxx xxxx xxxx xxxx */ |
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DECODE_OR (0xfbff8000, 0xf20f0000), |
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/* SUBW Rd, PC, #imm 1111 0x10 1010 1111 0xxx xxxx xxxx xxxx */ |
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DECODE_EMULATEX (0xfbff8000, 0xf2af0000, PROBES_T32_ADDWSUBW_PC, |
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REGS(PC, 0, NOSPPC, 0, 0)), |
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/* ADDW SP, SP, #imm 1111 0x10 0000 1101 0xxx 1101 xxxx xxxx */ |
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DECODE_OR (0xfbff8f00, 0xf20d0d00), |
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/* SUBW SP, SP, #imm 1111 0x10 1010 1101 0xxx 1101 xxxx xxxx */ |
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DECODE_EMULATEX (0xfbff8f00, 0xf2ad0d00, PROBES_T32_ADDWSUBW, |
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REGS(SP, 0, SP, 0, 0)), |
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/* ADDW 1111 0x10 0000 xxxx 0xxx xxxx xxxx xxxx */ |
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DECODE_OR (0xfbf08000, 0xf2000000), |
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/* SUBW 1111 0x10 1010 xxxx 0xxx xxxx xxxx xxxx */ |
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DECODE_EMULATEX (0xfbf08000, 0xf2a00000, PROBES_T32_ADDWSUBW, |
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REGS(NOPCX, 0, NOSPPC, 0, 0)), |
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/* MOVW 1111 0x10 0100 xxxx 0xxx xxxx xxxx xxxx */ |
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/* MOVT 1111 0x10 1100 xxxx 0xxx xxxx xxxx xxxx */ |
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DECODE_EMULATEX (0xfb708000, 0xf2400000, PROBES_T32_MOVW, |
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REGS(0, 0, NOSPPC, 0, 0)), |
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/* SSAT16 1111 0x11 0010 xxxx 0000 xxxx 00xx xxxx */ |
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/* SSAT 1111 0x11 00x0 xxxx 0xxx xxxx xxxx xxxx */ |
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/* USAT16 1111 0x11 1010 xxxx 0000 xxxx 00xx xxxx */ |
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/* USAT 1111 0x11 10x0 xxxx 0xxx xxxx xxxx xxxx */ |
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DECODE_EMULATEX (0xfb508000, 0xf3000000, PROBES_T32_SAT, |
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REGS(NOSPPC, 0, NOSPPC, 0, 0)), |
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/* SFBX 1111 0x11 0100 xxxx 0xxx xxxx xxxx xxxx */ |
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/* UFBX 1111 0x11 1100 xxxx 0xxx xxxx xxxx xxxx */ |
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DECODE_EMULATEX (0xfb708000, 0xf3400000, PROBES_T32_BITFIELD, |
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REGS(NOSPPC, 0, NOSPPC, 0, 0)), |
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/* BFC 1111 0x11 0110 1111 0xxx xxxx xxxx xxxx */ |
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DECODE_EMULATEX (0xfbff8000, 0xf36f0000, PROBES_T32_BITFIELD, |
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REGS(0, 0, NOSPPC, 0, 0)), |
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/* BFI 1111 0x11 0110 xxxx 0xxx xxxx xxxx xxxx */ |
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DECODE_EMULATEX (0xfbf08000, 0xf3600000, PROBES_T32_BITFIELD, |
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REGS(NOSPPCX, 0, NOSPPC, 0, 0)), |
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DECODE_END |
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}; |
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static const union decode_item t32_table_1111_0xxx___1[] = { |
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/* Branches and miscellaneous control */ |
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/* YIELD 1111 0011 1010 xxxx 10x0 x000 0000 0001 */ |
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DECODE_OR (0xfff0d7ff, 0xf3a08001), |
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/* SEV 1111 0011 1010 xxxx 10x0 x000 0000 0100 */ |
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DECODE_EMULATE (0xfff0d7ff, 0xf3a08004, PROBES_T32_SEV), |
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/* NOP 1111 0011 1010 xxxx 10x0 x000 0000 0000 */ |
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/* WFE 1111 0011 1010 xxxx 10x0 x000 0000 0010 */ |
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/* WFI 1111 0011 1010 xxxx 10x0 x000 0000 0011 */ |
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DECODE_SIMULATE (0xfff0d7fc, 0xf3a08000, PROBES_T32_WFE), |
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/* MRS Rd, CPSR 1111 0011 1110 xxxx 10x0 xxxx xxxx xxxx */ |
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DECODE_SIMULATEX(0xfff0d000, 0xf3e08000, PROBES_T32_MRS, |
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REGS(0, 0, NOSPPC, 0, 0)), |
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/* |
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* Unsupported instructions |
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* 1111 0x11 1xxx xxxx 10x0 xxxx xxxx xxxx |
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* |
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* MSR 1111 0011 100x xxxx 10x0 xxxx xxxx xxxx |
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* DBG hint 1111 0011 1010 xxxx 10x0 x000 1111 xxxx |
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* Unallocated hints 1111 0011 1010 xxxx 10x0 x000 xxxx xxxx |
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* CPS 1111 0011 1010 xxxx 10x0 xxxx xxxx xxxx |
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* CLREX/DSB/DMB/ISB 1111 0011 1011 xxxx 10x0 xxxx xxxx xxxx |
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* BXJ 1111 0011 1100 xxxx 10x0 xxxx xxxx xxxx |
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* SUBS PC,LR,#<imm8> 1111 0011 1101 xxxx 10x0 xxxx xxxx xxxx |
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* MRS Rd, SPSR 1111 0011 1111 xxxx 10x0 xxxx xxxx xxxx |
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* SMC 1111 0111 1111 xxxx 1000 xxxx xxxx xxxx |
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* UNDEFINED 1111 0111 1111 xxxx 1010 xxxx xxxx xxxx |
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* ??? 1111 0111 1xxx xxxx 1010 xxxx xxxx xxxx |
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*/ |
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DECODE_REJECT (0xfb80d000, 0xf3808000), |
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/* Bcc 1111 0xxx xxxx xxxx 10x0 xxxx xxxx xxxx */ |
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DECODE_CUSTOM (0xf800d000, 0xf0008000, PROBES_T32_BRANCH_COND), |
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/* BLX 1111 0xxx xxxx xxxx 11x0 xxxx xxxx xxx0 */ |
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DECODE_OR (0xf800d001, 0xf000c000), |
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/* B 1111 0xxx xxxx xxxx 10x1 xxxx xxxx xxxx */ |
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/* BL 1111 0xxx xxxx xxxx 11x1 xxxx xxxx xxxx */ |
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DECODE_SIMULATE (0xf8009000, 0xf0009000, PROBES_T32_BRANCH), |
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DECODE_END |
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}; |
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static const union decode_item t32_table_1111_100x_x0x1__1111[] = { |
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/* Memory hints */ |
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/* PLD (literal) 1111 1000 x001 1111 1111 xxxx xxxx xxxx */ |
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/* PLI (literal) 1111 1001 x001 1111 1111 xxxx xxxx xxxx */ |
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DECODE_SIMULATE (0xfe7ff000, 0xf81ff000, PROBES_T32_PLDI), |
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/* PLD{W} (immediate) 1111 1000 10x1 xxxx 1111 xxxx xxxx xxxx */ |
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DECODE_OR (0xffd0f000, 0xf890f000), |
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/* PLD{W} (immediate) 1111 1000 00x1 xxxx 1111 1100 xxxx xxxx */ |
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DECODE_OR (0xffd0ff00, 0xf810fc00), |
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/* PLI (immediate) 1111 1001 1001 xxxx 1111 xxxx xxxx xxxx */ |
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DECODE_OR (0xfff0f000, 0xf990f000), |
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/* PLI (immediate) 1111 1001 0001 xxxx 1111 1100 xxxx xxxx */ |
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DECODE_SIMULATEX(0xfff0ff00, 0xf910fc00, PROBES_T32_PLDI, |
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REGS(NOPCX, 0, 0, 0, 0)), |
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/* PLD{W} (register) 1111 1000 00x1 xxxx 1111 0000 00xx xxxx */ |
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DECODE_OR (0xffd0ffc0, 0xf810f000), |
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/* PLI (register) 1111 1001 0001 xxxx 1111 0000 00xx xxxx */ |
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DECODE_SIMULATEX(0xfff0ffc0, 0xf910f000, PROBES_T32_PLDI, |
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REGS(NOPCX, 0, 0, 0, NOSPPC)), |
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/* Other unallocated instructions... */ |
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DECODE_END |
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}; |
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static const union decode_item t32_table_1111_100x[] = { |
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/* Store/Load single data item */ |
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/* ??? 1111 100x x11x xxxx xxxx xxxx xxxx xxxx */ |
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DECODE_REJECT (0xfe600000, 0xf8600000), |
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/* ??? 1111 1001 0101 xxxx xxxx xxxx xxxx xxxx */ |
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DECODE_REJECT (0xfff00000, 0xf9500000), |
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/* ??? 1111 100x 0xxx xxxx xxxx 10x0 xxxx xxxx */ |
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DECODE_REJECT (0xfe800d00, 0xf8000800), |
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/* STRBT 1111 1000 0000 xxxx xxxx 1110 xxxx xxxx */ |
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/* STRHT 1111 1000 0010 xxxx xxxx 1110 xxxx xxxx */ |
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/* STRT 1111 1000 0100 xxxx xxxx 1110 xxxx xxxx */ |
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/* LDRBT 1111 1000 0001 xxxx xxxx 1110 xxxx xxxx */ |
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/* LDRSBT 1111 1001 0001 xxxx xxxx 1110 xxxx xxxx */ |
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/* LDRHT 1111 1000 0011 xxxx xxxx 1110 xxxx xxxx */ |
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/* LDRSHT 1111 1001 0011 xxxx xxxx 1110 xxxx xxxx */ |
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/* LDRT 1111 1000 0101 xxxx xxxx 1110 xxxx xxxx */ |
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DECODE_REJECT (0xfe800f00, 0xf8000e00), |
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/* STR{,B,H} Rn,[PC...] 1111 1000 xxx0 1111 xxxx xxxx xxxx xxxx */ |
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DECODE_REJECT (0xff1f0000, 0xf80f0000), |
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/* STR{,B,H} PC,[Rn...] 1111 1000 xxx0 xxxx 1111 xxxx xxxx xxxx */ |
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DECODE_REJECT (0xff10f000, 0xf800f000), |
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/* LDR (literal) 1111 1000 x101 1111 xxxx xxxx xxxx xxxx */ |
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DECODE_SIMULATEX(0xff7f0000, 0xf85f0000, PROBES_T32_LDR_LIT, |
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REGS(PC, ANY, 0, 0, 0)), |
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/* STR (immediate) 1111 1000 0100 xxxx xxxx 1xxx xxxx xxxx */ |
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/* LDR (immediate) 1111 1000 0101 xxxx xxxx 1xxx xxxx xxxx */ |
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DECODE_OR (0xffe00800, 0xf8400800), |
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/* STR (immediate) 1111 1000 1100 xxxx xxxx xxxx xxxx xxxx */ |
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/* LDR (immediate) 1111 1000 1101 xxxx xxxx xxxx xxxx xxxx */ |
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DECODE_EMULATEX (0xffe00000, 0xf8c00000, PROBES_T32_LDRSTR, |
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REGS(NOPCX, ANY, 0, 0, 0)), |
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/* STR (register) 1111 1000 0100 xxxx xxxx 0000 00xx xxxx */ |
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/* LDR (register) 1111 1000 0101 xxxx xxxx 0000 00xx xxxx */ |
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DECODE_EMULATEX (0xffe00fc0, 0xf8400000, PROBES_T32_LDRSTR, |
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REGS(NOPCX, ANY, 0, 0, NOSPPC)), |
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/* LDRB (literal) 1111 1000 x001 1111 xxxx xxxx xxxx xxxx */ |
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/* LDRSB (literal) 1111 1001 x001 1111 xxxx xxxx xxxx xxxx */ |
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/* LDRH (literal) 1111 1000 x011 1111 xxxx xxxx xxxx xxxx */ |
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/* LDRSH (literal) 1111 1001 x011 1111 xxxx xxxx xxxx xxxx */ |
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DECODE_SIMULATEX(0xfe5f0000, 0xf81f0000, PROBES_T32_LDR_LIT, |
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REGS(PC, NOSPPCX, 0, 0, 0)), |
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/* STRB (immediate) 1111 1000 0000 xxxx xxxx 1xxx xxxx xxxx */ |
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/* STRH (immediate) 1111 1000 0010 xxxx xxxx 1xxx xxxx xxxx */ |
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/* LDRB (immediate) 1111 1000 0001 xxxx xxxx 1xxx xxxx xxxx */ |
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/* LDRSB (immediate) 1111 1001 0001 xxxx xxxx 1xxx xxxx xxxx */ |
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/* LDRH (immediate) 1111 1000 0011 xxxx xxxx 1xxx xxxx xxxx */ |
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/* LDRSH (immediate) 1111 1001 0011 xxxx xxxx 1xxx xxxx xxxx */ |
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DECODE_OR (0xfec00800, 0xf8000800), |
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/* STRB (immediate) 1111 1000 1000 xxxx xxxx xxxx xxxx xxxx */ |
|
/* STRH (immediate) 1111 1000 1010 xxxx xxxx xxxx xxxx xxxx */ |
|
/* LDRB (immediate) 1111 1000 1001 xxxx xxxx xxxx xxxx xxxx */ |
|
/* LDRSB (immediate) 1111 1001 1001 xxxx xxxx xxxx xxxx xxxx */ |
|
/* LDRH (immediate) 1111 1000 1011 xxxx xxxx xxxx xxxx xxxx */ |
|
/* LDRSH (immediate) 1111 1001 1011 xxxx xxxx xxxx xxxx xxxx */ |
|
DECODE_EMULATEX (0xfec00000, 0xf8800000, PROBES_T32_LDRSTR, |
|
REGS(NOPCX, NOSPPCX, 0, 0, 0)), |
|
|
|
/* STRB (register) 1111 1000 0000 xxxx xxxx 0000 00xx xxxx */ |
|
/* STRH (register) 1111 1000 0010 xxxx xxxx 0000 00xx xxxx */ |
|
/* LDRB (register) 1111 1000 0001 xxxx xxxx 0000 00xx xxxx */ |
|
/* LDRSB (register) 1111 1001 0001 xxxx xxxx 0000 00xx xxxx */ |
|
/* LDRH (register) 1111 1000 0011 xxxx xxxx 0000 00xx xxxx */ |
|
/* LDRSH (register) 1111 1001 0011 xxxx xxxx 0000 00xx xxxx */ |
|
DECODE_EMULATEX (0xfe800fc0, 0xf8000000, PROBES_T32_LDRSTR, |
|
REGS(NOPCX, NOSPPCX, 0, 0, NOSPPC)), |
|
|
|
/* Other unallocated instructions... */ |
|
DECODE_END |
|
}; |
|
|
|
static const union decode_item t32_table_1111_1010___1111[] = { |
|
/* Data-processing (register) */ |
|
|
|
/* ??? 1111 1010 011x xxxx 1111 xxxx 1xxx xxxx */ |
|
DECODE_REJECT (0xffe0f080, 0xfa60f080), |
|
|
|
/* SXTH 1111 1010 0000 1111 1111 xxxx 1xxx xxxx */ |
|
/* UXTH 1111 1010 0001 1111 1111 xxxx 1xxx xxxx */ |
|
/* SXTB16 1111 1010 0010 1111 1111 xxxx 1xxx xxxx */ |
|
/* UXTB16 1111 1010 0011 1111 1111 xxxx 1xxx xxxx */ |
|
/* SXTB 1111 1010 0100 1111 1111 xxxx 1xxx xxxx */ |
|
/* UXTB 1111 1010 0101 1111 1111 xxxx 1xxx xxxx */ |
|
DECODE_EMULATEX (0xff8ff080, 0xfa0ff080, PROBES_T32_SIGN_EXTEND, |
|
REGS(0, 0, NOSPPC, 0, NOSPPC)), |
|
|
|
|
|
/* ??? 1111 1010 1xxx xxxx 1111 xxxx 0x11 xxxx */ |
|
DECODE_REJECT (0xff80f0b0, 0xfa80f030), |
|
/* ??? 1111 1010 1x11 xxxx 1111 xxxx 0xxx xxxx */ |
|
DECODE_REJECT (0xffb0f080, 0xfab0f000), |
|
|
|
/* SADD16 1111 1010 1001 xxxx 1111 xxxx 0000 xxxx */ |
|
/* SASX 1111 1010 1010 xxxx 1111 xxxx 0000 xxxx */ |
|
/* SSAX 1111 1010 1110 xxxx 1111 xxxx 0000 xxxx */ |
|
/* SSUB16 1111 1010 1101 xxxx 1111 xxxx 0000 xxxx */ |
|
/* SADD8 1111 1010 1000 xxxx 1111 xxxx 0000 xxxx */ |
|
/* SSUB8 1111 1010 1100 xxxx 1111 xxxx 0000 xxxx */ |
|
|
|
/* QADD16 1111 1010 1001 xxxx 1111 xxxx 0001 xxxx */ |
|
/* QASX 1111 1010 1010 xxxx 1111 xxxx 0001 xxxx */ |
|
/* QSAX 1111 1010 1110 xxxx 1111 xxxx 0001 xxxx */ |
|
/* QSUB16 1111 1010 1101 xxxx 1111 xxxx 0001 xxxx */ |
|
/* QADD8 1111 1010 1000 xxxx 1111 xxxx 0001 xxxx */ |
|
/* QSUB8 1111 1010 1100 xxxx 1111 xxxx 0001 xxxx */ |
|
|
|
/* SHADD16 1111 1010 1001 xxxx 1111 xxxx 0010 xxxx */ |
|
/* SHASX 1111 1010 1010 xxxx 1111 xxxx 0010 xxxx */ |
|
/* SHSAX 1111 1010 1110 xxxx 1111 xxxx 0010 xxxx */ |
|
/* SHSUB16 1111 1010 1101 xxxx 1111 xxxx 0010 xxxx */ |
|
/* SHADD8 1111 1010 1000 xxxx 1111 xxxx 0010 xxxx */ |
|
/* SHSUB8 1111 1010 1100 xxxx 1111 xxxx 0010 xxxx */ |
|
|
|
/* UADD16 1111 1010 1001 xxxx 1111 xxxx 0100 xxxx */ |
|
/* UASX 1111 1010 1010 xxxx 1111 xxxx 0100 xxxx */ |
|
/* USAX 1111 1010 1110 xxxx 1111 xxxx 0100 xxxx */ |
|
/* USUB16 1111 1010 1101 xxxx 1111 xxxx 0100 xxxx */ |
|
/* UADD8 1111 1010 1000 xxxx 1111 xxxx 0100 xxxx */ |
|
/* USUB8 1111 1010 1100 xxxx 1111 xxxx 0100 xxxx */ |
|
|
|
/* UQADD16 1111 1010 1001 xxxx 1111 xxxx 0101 xxxx */ |
|
/* UQASX 1111 1010 1010 xxxx 1111 xxxx 0101 xxxx */ |
|
/* UQSAX 1111 1010 1110 xxxx 1111 xxxx 0101 xxxx */ |
|
/* UQSUB16 1111 1010 1101 xxxx 1111 xxxx 0101 xxxx */ |
|
/* UQADD8 1111 1010 1000 xxxx 1111 xxxx 0101 xxxx */ |
|
/* UQSUB8 1111 1010 1100 xxxx 1111 xxxx 0101 xxxx */ |
|
|
|
/* UHADD16 1111 1010 1001 xxxx 1111 xxxx 0110 xxxx */ |
|
/* UHASX 1111 1010 1010 xxxx 1111 xxxx 0110 xxxx */ |
|
/* UHSAX 1111 1010 1110 xxxx 1111 xxxx 0110 xxxx */ |
|
/* UHSUB16 1111 1010 1101 xxxx 1111 xxxx 0110 xxxx */ |
|
/* UHADD8 1111 1010 1000 xxxx 1111 xxxx 0110 xxxx */ |
|
/* UHSUB8 1111 1010 1100 xxxx 1111 xxxx 0110 xxxx */ |
|
DECODE_OR (0xff80f080, 0xfa80f000), |
|
|
|
/* SXTAH 1111 1010 0000 xxxx 1111 xxxx 1xxx xxxx */ |
|
/* UXTAH 1111 1010 0001 xxxx 1111 xxxx 1xxx xxxx */ |
|
/* SXTAB16 1111 1010 0010 xxxx 1111 xxxx 1xxx xxxx */ |
|
/* UXTAB16 1111 1010 0011 xxxx 1111 xxxx 1xxx xxxx */ |
|
/* SXTAB 1111 1010 0100 xxxx 1111 xxxx 1xxx xxxx */ |
|
/* UXTAB 1111 1010 0101 xxxx 1111 xxxx 1xxx xxxx */ |
|
DECODE_OR (0xff80f080, 0xfa00f080), |
|
|
|
/* QADD 1111 1010 1000 xxxx 1111 xxxx 1000 xxxx */ |
|
/* QDADD 1111 1010 1000 xxxx 1111 xxxx 1001 xxxx */ |
|
/* QSUB 1111 1010 1000 xxxx 1111 xxxx 1010 xxxx */ |
|
/* QDSUB 1111 1010 1000 xxxx 1111 xxxx 1011 xxxx */ |
|
DECODE_OR (0xfff0f0c0, 0xfa80f080), |
|
|
|
/* SEL 1111 1010 1010 xxxx 1111 xxxx 1000 xxxx */ |
|
DECODE_OR (0xfff0f0f0, 0xfaa0f080), |
|
|
|
/* LSL 1111 1010 000x xxxx 1111 xxxx 0000 xxxx */ |
|
/* LSR 1111 1010 001x xxxx 1111 xxxx 0000 xxxx */ |
|
/* ASR 1111 1010 010x xxxx 1111 xxxx 0000 xxxx */ |
|
/* ROR 1111 1010 011x xxxx 1111 xxxx 0000 xxxx */ |
|
DECODE_EMULATEX (0xff80f0f0, 0xfa00f000, PROBES_T32_MEDIA, |
|
REGS(NOSPPC, 0, NOSPPC, 0, NOSPPC)), |
|
|
|
/* CLZ 1111 1010 1010 xxxx 1111 xxxx 1000 xxxx */ |
|
DECODE_OR (0xfff0f0f0, 0xfab0f080), |
|
|
|
/* REV 1111 1010 1001 xxxx 1111 xxxx 1000 xxxx */ |
|
/* REV16 1111 1010 1001 xxxx 1111 xxxx 1001 xxxx */ |
|
/* RBIT 1111 1010 1001 xxxx 1111 xxxx 1010 xxxx */ |
|
/* REVSH 1111 1010 1001 xxxx 1111 xxxx 1011 xxxx */ |
|
DECODE_EMULATEX (0xfff0f0c0, 0xfa90f080, PROBES_T32_REVERSE, |
|
REGS(NOSPPC, 0, NOSPPC, 0, SAMEAS16)), |
|
|
|
/* Other unallocated instructions... */ |
|
DECODE_END |
|
}; |
|
|
|
static const union decode_item t32_table_1111_1011_0[] = { |
|
/* Multiply, multiply accumulate, and absolute difference */ |
|
|
|
/* ??? 1111 1011 0000 xxxx 1111 xxxx 0001 xxxx */ |
|
DECODE_REJECT (0xfff0f0f0, 0xfb00f010), |
|
/* ??? 1111 1011 0111 xxxx 1111 xxxx 0001 xxxx */ |
|
DECODE_REJECT (0xfff0f0f0, 0xfb70f010), |
|
|
|
/* SMULxy 1111 1011 0001 xxxx 1111 xxxx 00xx xxxx */ |
|
DECODE_OR (0xfff0f0c0, 0xfb10f000), |
|
/* MUL 1111 1011 0000 xxxx 1111 xxxx 0000 xxxx */ |
|
/* SMUAD{X} 1111 1011 0010 xxxx 1111 xxxx 000x xxxx */ |
|
/* SMULWy 1111 1011 0011 xxxx 1111 xxxx 000x xxxx */ |
|
/* SMUSD{X} 1111 1011 0100 xxxx 1111 xxxx 000x xxxx */ |
|
/* SMMUL{R} 1111 1011 0101 xxxx 1111 xxxx 000x xxxx */ |
|
/* USAD8 1111 1011 0111 xxxx 1111 xxxx 0000 xxxx */ |
|
DECODE_EMULATEX (0xff80f0e0, 0xfb00f000, PROBES_T32_MUL_ADD, |
|
REGS(NOSPPC, 0, NOSPPC, 0, NOSPPC)), |
|
|
|
/* ??? 1111 1011 0111 xxxx xxxx xxxx 0001 xxxx */ |
|
DECODE_REJECT (0xfff000f0, 0xfb700010), |
|
|
|
/* SMLAxy 1111 1011 0001 xxxx xxxx xxxx 00xx xxxx */ |
|
DECODE_OR (0xfff000c0, 0xfb100000), |
|
/* MLA 1111 1011 0000 xxxx xxxx xxxx 0000 xxxx */ |
|
/* MLS 1111 1011 0000 xxxx xxxx xxxx 0001 xxxx */ |
|
/* SMLAD{X} 1111 1011 0010 xxxx xxxx xxxx 000x xxxx */ |
|
/* SMLAWy 1111 1011 0011 xxxx xxxx xxxx 000x xxxx */ |
|
/* SMLSD{X} 1111 1011 0100 xxxx xxxx xxxx 000x xxxx */ |
|
/* SMMLA{R} 1111 1011 0101 xxxx xxxx xxxx 000x xxxx */ |
|
/* SMMLS{R} 1111 1011 0110 xxxx xxxx xxxx 000x xxxx */ |
|
/* USADA8 1111 1011 0111 xxxx xxxx xxxx 0000 xxxx */ |
|
DECODE_EMULATEX (0xff8000c0, 0xfb000000, PROBES_T32_MUL_ADD2, |
|
REGS(NOSPPC, NOSPPCX, NOSPPC, 0, NOSPPC)), |
|
|
|
/* Other unallocated instructions... */ |
|
DECODE_END |
|
}; |
|
|
|
static const union decode_item t32_table_1111_1011_1[] = { |
|
/* Long multiply, long multiply accumulate, and divide */ |
|
|
|
/* UMAAL 1111 1011 1110 xxxx xxxx xxxx 0110 xxxx */ |
|
DECODE_OR (0xfff000f0, 0xfbe00060), |
|
/* SMLALxy 1111 1011 1100 xxxx xxxx xxxx 10xx xxxx */ |
|
DECODE_OR (0xfff000c0, 0xfbc00080), |
|
/* SMLALD{X} 1111 1011 1100 xxxx xxxx xxxx 110x xxxx */ |
|
/* SMLSLD{X} 1111 1011 1101 xxxx xxxx xxxx 110x xxxx */ |
|
DECODE_OR (0xffe000e0, 0xfbc000c0), |
|
/* SMULL 1111 1011 1000 xxxx xxxx xxxx 0000 xxxx */ |
|
/* UMULL 1111 1011 1010 xxxx xxxx xxxx 0000 xxxx */ |
|
/* SMLAL 1111 1011 1100 xxxx xxxx xxxx 0000 xxxx */ |
|
/* UMLAL 1111 1011 1110 xxxx xxxx xxxx 0000 xxxx */ |
|
DECODE_EMULATEX (0xff9000f0, 0xfb800000, PROBES_T32_MUL_ADD_LONG, |
|
REGS(NOSPPC, NOSPPC, NOSPPC, 0, NOSPPC)), |
|
|
|
/* SDIV 1111 1011 1001 xxxx xxxx xxxx 1111 xxxx */ |
|
/* UDIV 1111 1011 1011 xxxx xxxx xxxx 1111 xxxx */ |
|
/* Other unallocated instructions... */ |
|
DECODE_END |
|
}; |
|
|
|
const union decode_item probes_decode_thumb32_table[] = { |
|
|
|
/* |
|
* Load/store multiple instructions |
|
* 1110 100x x0xx xxxx xxxx xxxx xxxx xxxx |
|
*/ |
|
DECODE_TABLE (0xfe400000, 0xe8000000, t32_table_1110_100x_x0xx), |
|
|
|
/* |
|
* Load/store dual, load/store exclusive, table branch |
|
* 1110 100x x1xx xxxx xxxx xxxx xxxx xxxx |
|
*/ |
|
DECODE_TABLE (0xfe400000, 0xe8400000, t32_table_1110_100x_x1xx), |
|
|
|
/* |
|
* Data-processing (shifted register) |
|
* 1110 101x xxxx xxxx xxxx xxxx xxxx xxxx |
|
*/ |
|
DECODE_TABLE (0xfe000000, 0xea000000, t32_table_1110_101x), |
|
|
|
/* |
|
* Coprocessor instructions |
|
* 1110 11xx xxxx xxxx xxxx xxxx xxxx xxxx |
|
*/ |
|
DECODE_REJECT (0xfc000000, 0xec000000), |
|
|
|
/* |
|
* Data-processing (modified immediate) |
|
* 1111 0x0x xxxx xxxx 0xxx xxxx xxxx xxxx |
|
*/ |
|
DECODE_TABLE (0xfa008000, 0xf0000000, t32_table_1111_0x0x___0), |
|
|
|
/* |
|
* Data-processing (plain binary immediate) |
|
* 1111 0x1x xxxx xxxx 0xxx xxxx xxxx xxxx |
|
*/ |
|
DECODE_TABLE (0xfa008000, 0xf2000000, t32_table_1111_0x1x___0), |
|
|
|
/* |
|
* Branches and miscellaneous control |
|
* 1111 0xxx xxxx xxxx 1xxx xxxx xxxx xxxx |
|
*/ |
|
DECODE_TABLE (0xf8008000, 0xf0008000, t32_table_1111_0xxx___1), |
|
|
|
/* |
|
* Advanced SIMD element or structure load/store instructions |
|
* 1111 1001 xxx0 xxxx xxxx xxxx xxxx xxxx |
|
*/ |
|
DECODE_REJECT (0xff100000, 0xf9000000), |
|
|
|
/* |
|
* Memory hints |
|
* 1111 100x x0x1 xxxx 1111 xxxx xxxx xxxx |
|
*/ |
|
DECODE_TABLE (0xfe50f000, 0xf810f000, t32_table_1111_100x_x0x1__1111), |
|
|
|
/* |
|
* Store single data item |
|
* 1111 1000 xxx0 xxxx xxxx xxxx xxxx xxxx |
|
* Load single data items |
|
* 1111 100x xxx1 xxxx xxxx xxxx xxxx xxxx |
|
*/ |
|
DECODE_TABLE (0xfe000000, 0xf8000000, t32_table_1111_100x), |
|
|
|
/* |
|
* Data-processing (register) |
|
* 1111 1010 xxxx xxxx 1111 xxxx xxxx xxxx |
|
*/ |
|
DECODE_TABLE (0xff00f000, 0xfa00f000, t32_table_1111_1010___1111), |
|
|
|
/* |
|
* Multiply, multiply accumulate, and absolute difference |
|
* 1111 1011 0xxx xxxx xxxx xxxx xxxx xxxx |
|
*/ |
|
DECODE_TABLE (0xff800000, 0xfb000000, t32_table_1111_1011_0), |
|
|
|
/* |
|
* Long multiply, long multiply accumulate, and divide |
|
* 1111 1011 1xxx xxxx xxxx xxxx xxxx xxxx |
|
*/ |
|
DECODE_TABLE (0xff800000, 0xfb800000, t32_table_1111_1011_1), |
|
|
|
/* |
|
* Coprocessor instructions |
|
* 1111 11xx xxxx xxxx xxxx xxxx xxxx xxxx |
|
*/ |
|
DECODE_END |
|
}; |
|
#ifdef CONFIG_ARM_KPROBES_TEST_MODULE |
|
EXPORT_SYMBOL_GPL(probes_decode_thumb32_table); |
|
#endif |
|
|
|
static const union decode_item t16_table_1011[] = { |
|
/* Miscellaneous 16-bit instructions */ |
|
|
|
/* ADD (SP plus immediate) 1011 0000 0xxx xxxx */ |
|
/* SUB (SP minus immediate) 1011 0000 1xxx xxxx */ |
|
DECODE_SIMULATE (0xff00, 0xb000, PROBES_T16_ADD_SP), |
|
|
|
/* CBZ 1011 00x1 xxxx xxxx */ |
|
/* CBNZ 1011 10x1 xxxx xxxx */ |
|
DECODE_SIMULATE (0xf500, 0xb100, PROBES_T16_CBZ), |
|
|
|
/* SXTH 1011 0010 00xx xxxx */ |
|
/* SXTB 1011 0010 01xx xxxx */ |
|
/* UXTH 1011 0010 10xx xxxx */ |
|
/* UXTB 1011 0010 11xx xxxx */ |
|
/* REV 1011 1010 00xx xxxx */ |
|
/* REV16 1011 1010 01xx xxxx */ |
|
/* ??? 1011 1010 10xx xxxx */ |
|
/* REVSH 1011 1010 11xx xxxx */ |
|
DECODE_REJECT (0xffc0, 0xba80), |
|
DECODE_EMULATE (0xf500, 0xb000, PROBES_T16_SIGN_EXTEND), |
|
|
|
/* PUSH 1011 010x xxxx xxxx */ |
|
DECODE_CUSTOM (0xfe00, 0xb400, PROBES_T16_PUSH), |
|
/* POP 1011 110x xxxx xxxx */ |
|
DECODE_CUSTOM (0xfe00, 0xbc00, PROBES_T16_POP), |
|
|
|
/* |
|
* If-Then, and hints |
|
* 1011 1111 xxxx xxxx |
|
*/ |
|
|
|
/* YIELD 1011 1111 0001 0000 */ |
|
DECODE_OR (0xffff, 0xbf10), |
|
/* SEV 1011 1111 0100 0000 */ |
|
DECODE_EMULATE (0xffff, 0xbf40, PROBES_T16_SEV), |
|
/* NOP 1011 1111 0000 0000 */ |
|
/* WFE 1011 1111 0010 0000 */ |
|
/* WFI 1011 1111 0011 0000 */ |
|
DECODE_SIMULATE (0xffcf, 0xbf00, PROBES_T16_WFE), |
|
/* Unassigned hints 1011 1111 xxxx 0000 */ |
|
DECODE_REJECT (0xff0f, 0xbf00), |
|
/* IT 1011 1111 xxxx xxxx */ |
|
DECODE_CUSTOM (0xff00, 0xbf00, PROBES_T16_IT), |
|
|
|
/* SETEND 1011 0110 010x xxxx */ |
|
/* CPS 1011 0110 011x xxxx */ |
|
/* BKPT 1011 1110 xxxx xxxx */ |
|
/* And unallocated instructions... */ |
|
DECODE_END |
|
}; |
|
|
|
const union decode_item probes_decode_thumb16_table[] = { |
|
|
|
/* |
|
* Shift (immediate), add, subtract, move, and compare |
|
* 00xx xxxx xxxx xxxx |
|
*/ |
|
|
|
/* CMP (immediate) 0010 1xxx xxxx xxxx */ |
|
DECODE_EMULATE (0xf800, 0x2800, PROBES_T16_CMP), |
|
|
|
/* ADD (register) 0001 100x xxxx xxxx */ |
|
/* SUB (register) 0001 101x xxxx xxxx */ |
|
/* LSL (immediate) 0000 0xxx xxxx xxxx */ |
|
/* LSR (immediate) 0000 1xxx xxxx xxxx */ |
|
/* ASR (immediate) 0001 0xxx xxxx xxxx */ |
|
/* ADD (immediate, Thumb) 0001 110x xxxx xxxx */ |
|
/* SUB (immediate, Thumb) 0001 111x xxxx xxxx */ |
|
/* MOV (immediate) 0010 0xxx xxxx xxxx */ |
|
/* ADD (immediate, Thumb) 0011 0xxx xxxx xxxx */ |
|
/* SUB (immediate, Thumb) 0011 1xxx xxxx xxxx */ |
|
DECODE_EMULATE (0xc000, 0x0000, PROBES_T16_ADDSUB), |
|
|
|
/* |
|
* 16-bit Thumb data-processing instructions |
|
* 0100 00xx xxxx xxxx |
|
*/ |
|
|
|
/* TST (register) 0100 0010 00xx xxxx */ |
|
DECODE_EMULATE (0xffc0, 0x4200, PROBES_T16_CMP), |
|
/* CMP (register) 0100 0010 10xx xxxx */ |
|
/* CMN (register) 0100 0010 11xx xxxx */ |
|
DECODE_EMULATE (0xff80, 0x4280, PROBES_T16_CMP), |
|
/* AND (register) 0100 0000 00xx xxxx */ |
|
/* EOR (register) 0100 0000 01xx xxxx */ |
|
/* LSL (register) 0100 0000 10xx xxxx */ |
|
/* LSR (register) 0100 0000 11xx xxxx */ |
|
/* ASR (register) 0100 0001 00xx xxxx */ |
|
/* ADC (register) 0100 0001 01xx xxxx */ |
|
/* SBC (register) 0100 0001 10xx xxxx */ |
|
/* ROR (register) 0100 0001 11xx xxxx */ |
|
/* RSB (immediate) 0100 0010 01xx xxxx */ |
|
/* ORR (register) 0100 0011 00xx xxxx */ |
|
/* MUL 0100 0011 00xx xxxx */ |
|
/* BIC (register) 0100 0011 10xx xxxx */ |
|
/* MVN (register) 0100 0011 10xx xxxx */ |
|
DECODE_EMULATE (0xfc00, 0x4000, PROBES_T16_LOGICAL), |
|
|
|
/* |
|
* Special data instructions and branch and exchange |
|
* 0100 01xx xxxx xxxx |
|
*/ |
|
|
|
/* BLX pc 0100 0111 1111 1xxx */ |
|
DECODE_REJECT (0xfff8, 0x47f8), |
|
|
|
/* BX (register) 0100 0111 0xxx xxxx */ |
|
/* BLX (register) 0100 0111 1xxx xxxx */ |
|
DECODE_SIMULATE (0xff00, 0x4700, PROBES_T16_BLX), |
|
|
|
/* ADD pc, pc 0100 0100 1111 1111 */ |
|
DECODE_REJECT (0xffff, 0x44ff), |
|
|
|
/* ADD (register) 0100 0100 xxxx xxxx */ |
|
/* CMP (register) 0100 0101 xxxx xxxx */ |
|
/* MOV (register) 0100 0110 xxxx xxxx */ |
|
DECODE_CUSTOM (0xfc00, 0x4400, PROBES_T16_HIREGOPS), |
|
|
|
/* |
|
* Load from Literal Pool |
|
* LDR (literal) 0100 1xxx xxxx xxxx |
|
*/ |
|
DECODE_SIMULATE (0xf800, 0x4800, PROBES_T16_LDR_LIT), |
|
|
|
/* |
|
* 16-bit Thumb Load/store instructions |
|
* 0101 xxxx xxxx xxxx |
|
* 011x xxxx xxxx xxxx |
|
* 100x xxxx xxxx xxxx |
|
*/ |
|
|
|
/* STR (register) 0101 000x xxxx xxxx */ |
|
/* STRH (register) 0101 001x xxxx xxxx */ |
|
/* STRB (register) 0101 010x xxxx xxxx */ |
|
/* LDRSB (register) 0101 011x xxxx xxxx */ |
|
/* LDR (register) 0101 100x xxxx xxxx */ |
|
/* LDRH (register) 0101 101x xxxx xxxx */ |
|
/* LDRB (register) 0101 110x xxxx xxxx */ |
|
/* LDRSH (register) 0101 111x xxxx xxxx */ |
|
/* STR (immediate, Thumb) 0110 0xxx xxxx xxxx */ |
|
/* LDR (immediate, Thumb) 0110 1xxx xxxx xxxx */ |
|
/* STRB (immediate, Thumb) 0111 0xxx xxxx xxxx */ |
|
/* LDRB (immediate, Thumb) 0111 1xxx xxxx xxxx */ |
|
DECODE_EMULATE (0xc000, 0x4000, PROBES_T16_LDRHSTRH), |
|
/* STRH (immediate, Thumb) 1000 0xxx xxxx xxxx */ |
|
/* LDRH (immediate, Thumb) 1000 1xxx xxxx xxxx */ |
|
DECODE_EMULATE (0xf000, 0x8000, PROBES_T16_LDRHSTRH), |
|
/* STR (immediate, Thumb) 1001 0xxx xxxx xxxx */ |
|
/* LDR (immediate, Thumb) 1001 1xxx xxxx xxxx */ |
|
DECODE_SIMULATE (0xf000, 0x9000, PROBES_T16_LDRSTR), |
|
|
|
/* |
|
* Generate PC-/SP-relative address |
|
* ADR (literal) 1010 0xxx xxxx xxxx |
|
* ADD (SP plus immediate) 1010 1xxx xxxx xxxx |
|
*/ |
|
DECODE_SIMULATE (0xf000, 0xa000, PROBES_T16_ADR), |
|
|
|
/* |
|
* Miscellaneous 16-bit instructions |
|
* 1011 xxxx xxxx xxxx |
|
*/ |
|
DECODE_TABLE (0xf000, 0xb000, t16_table_1011), |
|
|
|
/* STM 1100 0xxx xxxx xxxx */ |
|
/* LDM 1100 1xxx xxxx xxxx */ |
|
DECODE_EMULATE (0xf000, 0xc000, PROBES_T16_LDMSTM), |
|
|
|
/* |
|
* Conditional branch, and Supervisor Call |
|
*/ |
|
|
|
/* Permanently UNDEFINED 1101 1110 xxxx xxxx */ |
|
/* SVC 1101 1111 xxxx xxxx */ |
|
DECODE_REJECT (0xfe00, 0xde00), |
|
|
|
/* Conditional branch 1101 xxxx xxxx xxxx */ |
|
DECODE_CUSTOM (0xf000, 0xd000, PROBES_T16_BRANCH_COND), |
|
|
|
/* |
|
* Unconditional branch |
|
* B 1110 0xxx xxxx xxxx |
|
*/ |
|
DECODE_SIMULATE (0xf800, 0xe000, PROBES_T16_BRANCH), |
|
|
|
DECODE_END |
|
}; |
|
#ifdef CONFIG_ARM_KPROBES_TEST_MODULE |
|
EXPORT_SYMBOL_GPL(probes_decode_thumb16_table); |
|
#endif |
|
|
|
static unsigned long __kprobes thumb_check_cc(unsigned long cpsr) |
|
{ |
|
if (unlikely(in_it_block(cpsr))) |
|
return probes_condition_checks[current_cond(cpsr)](cpsr); |
|
return true; |
|
} |
|
|
|
static void __kprobes thumb16_singlestep(probes_opcode_t opcode, |
|
struct arch_probes_insn *asi, |
|
struct pt_regs *regs) |
|
{ |
|
regs->ARM_pc += 2; |
|
asi->insn_handler(opcode, asi, regs); |
|
regs->ARM_cpsr = it_advance(regs->ARM_cpsr); |
|
} |
|
|
|
static void __kprobes thumb32_singlestep(probes_opcode_t opcode, |
|
struct arch_probes_insn *asi, |
|
struct pt_regs *regs) |
|
{ |
|
regs->ARM_pc += 4; |
|
asi->insn_handler(opcode, asi, regs); |
|
regs->ARM_cpsr = it_advance(regs->ARM_cpsr); |
|
} |
|
|
|
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[]) |
|
{ |
|
asi->insn_singlestep = thumb16_singlestep; |
|
asi->insn_check_cc = thumb_check_cc; |
|
return probes_decode_insn(insn, asi, probes_decode_thumb16_table, true, |
|
emulate, actions, 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[]) |
|
{ |
|
asi->insn_singlestep = thumb32_singlestep; |
|
asi->insn_check_cc = thumb_check_cc; |
|
return probes_decode_insn(insn, asi, probes_decode_thumb32_table, true, |
|
emulate, actions, checkers); |
|
}
|
|
|