diff options
| author | Cyrille Bagard <nocbos@gmail.com> | 2017-12-02 11:04:35 (GMT) |
|---|---|---|
| committer | Cyrille Bagard <nocbos@gmail.com> | 2017-12-02 11:04:35 (GMT) |
| commit | 2c988d3ec52cc4c949a35aca7ef335dac773df92 (patch) | |
| tree | fe650d2fc8ddceb606abdf0d2e14e5ef6596be82 /src/arch/arm/v7/thumb_32.c | |
| parent | 23abef53590bf3dd6f88ff4dbe81e306abfa4386 (diff) | |
Created a plugin for the ARM support.
Diffstat (limited to 'src/arch/arm/v7/thumb_32.c')
| -rw-r--r-- | src/arch/arm/v7/thumb_32.c | 2268 |
1 files changed, 0 insertions, 2268 deletions
diff --git a/src/arch/arm/v7/thumb_32.c b/src/arch/arm/v7/thumb_32.c deleted file mode 100644 index f9de2e6..0000000 --- a/src/arch/arm/v7/thumb_32.c +++ /dev/null @@ -1,2268 +0,0 @@ - -/* Chrysalide - Outil d'analyse de fichiers binaires - * thumb_32.c - désassemblage des instructions ARMv7 Thumb 32 bits - * - * Copyright (C) 2014-2017 Cyrille Bagard - * - * This file is part of Chrysalide. - * - * Chrysalide is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 3 of the License, or - * (at your option) any later version. - * - * Chrysalide 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 Foobar. If not, see <http://www.gnu.org/licenses/>. - */ - - -#include "thumb_32.h" - - -#include <stdint.h> - - -#include "simd.h" -#include "opcodes/thumb_32_opcodes.h" -#include "opcodes/opcodes_tmp_thumb_32.h" -#include "../../undefined.h" -#include "../../../common/bconst.h" - - - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.1. */ -static GArchInstruction *process_armv7_thumb_32_data_processing_modified_immediate(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.3. */ -static GArchInstruction *process_armv7_thumb_32_data_processing_plain_binary_immediate(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.4. */ -static GArchInstruction *process_armv7_thumb_32_branches_and_miscellaneous_control(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.4b. */ -static GArchInstruction *process_armv7_thumb_32_change_processor_state_and_hints(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.4t. */ -static GArchInstruction *process_armv7_thumb_32_miscellaneous_control_instructions(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.5. */ -static GArchInstruction *process_armv7_thumb_32_load_store_multiple(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.6. */ -static GArchInstruction *process_armv7_thumb_32_load_store_dual_load_store_exclusive_table_branch(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.7. */ -static GArchInstruction *process_armv7_thumb_32_load_word(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.8. */ -static GArchInstruction *process_armv7_thumb_32_load_halfword_memory_hints(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.9. */ -static GArchInstruction *process_armv7_thumb_32_load_byte_memory_hints(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.10. */ -static GArchInstruction *process_armv7_thumb_32_store_single_data_item(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.11. */ -static GArchInstruction *process_armv7_thumb_32_data_processing_shifted_register(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.11b. */ -static GArchInstruction *process_armv7_thumb_32_move_register_and_immediate_shifts(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.12. */ -static GArchInstruction *process_armv7_thumb_32_data_processing_register(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.13. */ -static GArchInstruction *process_armv7_thumb_32_parallel_addition_and_subtraction_signed(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.14. */ -static GArchInstruction *process_armv7_thumb_32_parallel_addition_and_subtraction_unsigned(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.15. */ -static GArchInstruction *process_armv7_thumb_32_miscellaneous_operations(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.16. */ -static GArchInstruction *process_armv7_thumb_32_multiply_multiply_accumulate_and_absolute_difference(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.17. */ -static GArchInstruction *process_armv7_thumb_32_long_multiply_long_multiply_accumulate_and_divide(uint32_t); - -/* Désassemble une instruction ARMv7 liées au chapitre A6.3.18. */ -static GArchInstruction *process_armv7_thumb_32_coprocessor_advanced_simd_and_floating_point_instructions(uint32_t); - - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -GArchInstruction *process_armv7_thumb_32_instruction_set_encoding(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op1; /* Champ 'op1' à retrouver */ - uint32_t op2; /* Champ 'op2' à retrouver */ - uint32_t op; /* Champ 'op' à retrouver */ - - /** - * Suit les directives de : - * § A6.3 32-bit Thumb instruction encoding - */ - - if (((raw >> 29) & b111) != b111) return NULL; - - result = NULL; - - op1 = (raw >> 27) & b11; - op2 = (raw >> 20) & b1111111; - op = (raw >> 15) & b1; - - switch (op1) - { - case b01: - - if ((op2 & b1100100) == b0000000) - result = process_armv7_thumb_32_load_store_multiple(raw); - - else if ((op2 & b1100100) == b0000100) - result = process_armv7_thumb_32_load_store_dual_load_store_exclusive_table_branch(raw); - - else if ((op2 & b1100000) == b0100000) - result = process_armv7_thumb_32_data_processing_shifted_register(raw); - - else if ((op2 & b1000000) == b1000000) - result = process_armv7_thumb_32_coprocessor_advanced_simd_and_floating_point_instructions(raw); - - break; - - case b10: - - if (op == 1) - result = process_armv7_thumb_32_branches_and_miscellaneous_control(raw); - - else - { - if ((op2 & b0100000) == b0000000) - result = process_armv7_thumb_32_data_processing_modified_immediate(raw); - - else if ((op2 & b0100000) == b0100000) - result = process_armv7_thumb_32_data_processing_plain_binary_immediate(raw); - - } - - break; - - case b11: - - if ((op2 & b1110001) == b0000000) - result = process_armv7_thumb_32_store_single_data_item(raw); - - else if ((op2 & b1100111) == b0000001) - result = process_armv7_thumb_32_load_byte_memory_hints(raw); - - else if ((op2 & b1100111) == b0000011) - result = process_armv7_thumb_32_load_halfword_memory_hints(raw); - - else if ((op2 & b1100111) == b0000101) - result = process_armv7_thumb_32_load_word(raw); - - else if ((op2 & b1100111) == b0000111) - result = g_undef_instruction_new(IBS_UNDEFINED); - - else if ((op2 & b1110001) == b0010000) - result = process_armv7_simd_advanced_simd_element_or_structure_load_store_instructions(raw, false); - - else if ((op2 & b1110000) == b0100000) - result = process_armv7_thumb_32_data_processing_register(raw); - - else if ((op2 & b1111000) == b0110000) - result = process_armv7_thumb_32_multiply_multiply_accumulate_and_absolute_difference(raw); - - else if ((op2 & b1111000) == b0111000) - result = process_armv7_thumb_32_long_multiply_long_multiply_accumulate_and_divide(raw); - - else if ((op2 & b1000000) == b1000000) - result = process_armv7_thumb_32_coprocessor_advanced_simd_and_floating_point_instructions(raw); - - break; - - } - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.1. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_data_processing_modified_immediate(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op; /* Champ 'op' à retrouver */ - uint32_t rn; /* Champ 'rn' à retrouver */ - uint32_t rds; /* Champ 'rds' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.1 Data-processing (modified immediate) - */ - - if ((raw & 0xfa008000) != 0xf0000000) return NULL; - - result = NULL; - - op = (raw >> 21) & b1111; - rn = (raw >> 16) & b1111; - rds = (((raw >> 8) & b1111) << 1) | ((raw >> 20) & b1); - - switch (op) - { - case b0000: - - if (rds == b11111) - result = armv7_read_thumb_32_instr_tst_immediate(raw); - - else - result = armv7_read_thumb_32_instr_and_immediate(raw); - - break; - - case b0001: - result = armv7_read_thumb_32_instr_bic_immediate(raw); - break; - - case b0010: - - if (rn == b1111) - result = armv7_read_thumb_32_instr_mov_immediate(raw); - - else - result = armv7_read_thumb_32_instr_orr_immediate(raw); - - break; - - case b0011: - - if (rn == b1111) - result = armv7_read_thumb_32_instr_mvn_immediate(raw); - - else - result = armv7_read_thumb_32_instr_orn_immediate(raw); - - break; - - case b0100: - - if (rds == b11111) - result = armv7_read_thumb_32_instr_teq_immediate(raw); - - else - result = armv7_read_thumb_32_instr_eor_immediate(raw); - - break; - - case b1000: - - if (rds == b11111) - result = armv7_read_thumb_32_instr_cmn_immediate(raw); - - else - result = armv7_read_thumb_32_instr_add_immediate_thumb(raw); - - break; - - case b1010: - result = armv7_read_thumb_32_instr_adc_immediate(raw); - break; - - case b1011: - result = armv7_read_thumb_32_instr_sbc_immediate(raw); - break; - - case b1101: - - if (rds == b11111) - result = armv7_read_thumb_32_instr_cmp_immediate(raw); - - else - result = armv7_read_thumb_32_instr_sub_immediate_thumb(raw); - - break; - - case b1110: - result = armv7_read_thumb_32_instr_rsb_immediate(raw); - break; - - } - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.3. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_data_processing_plain_binary_immediate(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op; /* Champ 'op' à retrouver */ - uint32_t rn; /* Champ 'rn' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.3 Data-processing (plain binary immediate) - */ - - if ((raw & 0xfa008000) != 0xf2000000) return NULL; - - result = NULL; - - op = (raw >> 20) & b11111; - rn = (raw >> 16) & b1111; - - switch (op) - { - case b00000: - - if (rn == b1111) - result = armv7_read_thumb_32_instr_adr(raw); - - else - result = armv7_read_thumb_32_instr_add_immediate_thumb(raw); - - break; - - case b00100: - result = armv7_read_thumb_32_instr_mov_immediate(raw); - break; - - case b01010: - - if (rn == b11111) - result = armv7_read_thumb_32_instr_adr(raw); - - else - result = armv7_read_thumb_32_instr_sub_immediate_thumb(raw); - - break; - - case b01100: - result = armv7_read_thumb_32_instr_movt(raw); - break; - - case b10000: - result = armv7_read_thumb_32_instr_ssat(raw); - break; - - case b10010: - - if ((raw & 0x000070c0) != 0) - result = armv7_read_thumb_32_instr_ssat(raw); - - else - result = armv7_read_thumb_32_instr_ssat16(raw); - - break; - - case b10100: - result = armv7_read_thumb_32_instr_sbfx(raw); - break; - - case b10110: - - if (rn == b11111) - result = armv7_read_thumb_32_instr_bfc(raw); - - else - result = armv7_read_thumb_32_instr_bfi(raw); - - break; - - case b11000: - result = armv7_read_thumb_32_instr_usat(raw); - break; - - case b11010: - - if ((raw & 0x000070c0) != 0) - result = armv7_read_thumb_32_instr_usat(raw); - - else - result = armv7_read_thumb_32_instr_usat16(raw); - - break; - - case b11100: - result = armv7_read_thumb_32_instr_ubfx(raw); - break; - - } - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.4. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_branches_and_miscellaneous_control(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op; /* Champ 'op' à retrouver */ - uint32_t op1; /* Champ 'op1' à retrouver */ - uint32_t op2; /* Champ 'op2' à retrouver */ - uint32_t imm8; /* Champ 'imm8' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.4 Branches and miscellaneous control - */ - - if ((raw & 0xf8000000) != 0xf0000000) return NULL; - - result = NULL; - - op = (raw >> 20) & b1111111; - op1 = (raw >> 12) & b111; - op2 = (raw >> 8) & b1111; - imm8 = (raw >> 0) & b11111111; - - if (op1 == b000 && op == b1111110) - result = armv7_read_thumb_32_instr_hvc(raw); - - else if (op1 == b000 && op == b1111111) - result = armv7_read_thumb_32_instr_smc_previously_smi(raw); - - else if ((op1 & b101) == b000) - { - if ((op & b0111000) != b0111000) - result = armv7_read_thumb_32_instr_b(raw); - - else if ((imm8 & b00100000) == b00100000 && (op & b1111110) == b0111000) - result = armv7_read_thumb_32_instr_msr_banked_register(raw); - - else if ((imm8 & b00100000) == b00000000 && op == b0111000 && (op2 & b0011) == b0000) - result = armv7_read_thumb_32_instr_msr_register(raw); - - else if ((imm8 & b00100000) == b00000000 && op == b0111000 && (op2 & b0011) == b0001) - result = armv7_read_thumb_32_instr_b_msr_register(raw); - - else if ((imm8 & b00100000) == b00000000 && op == b0111000 && (op2 & b0010) == b0010) - result = armv7_read_thumb_32_instr_b_msr_register(raw); - - else if ((imm8 & b00100000) == b00000000 && op == b0111001) - result = armv7_read_thumb_32_instr_b_msr_register(raw); - - else if (op == b0111010) - result = process_armv7_thumb_32_change_processor_state_and_hints(raw); - - else if (op == b0111011) - result = process_armv7_thumb_32_miscellaneous_control_instructions(raw); - - else if (op == b0111100) - result = armv7_read_thumb_32_instr_bxj(raw); - - else if (imm8 == b00000000 && op == b0111101) - result = armv7_read_thumb_32_instr_eret(raw); - - else if (imm8 != b00000000 && op == b0111101) - result = armv7_read_thumb_32_instr_subs_pc_lr_thumb(raw); - - else if ((imm8 & b00100000) == b00100000 && (op & b1111110) == b0111110) - result = armv7_read_thumb_32_instr_mrs_banked_register(raw); - - else if ((imm8 & b00100000) == b00000000 && op == b0111110) - result = armv7_read_thumb_32_instr_mrs(raw); - - else if ((imm8 & b00100000) == b00000000 && op == b0111111) - result = armv7_read_thumb_32_instr_b_mrs(raw); - - } - - else if ((op1 & b101) == b001) - result = armv7_read_thumb_32_instr_b(raw); - - else if (op1 == b010 && op == b1111111) - result = armv7_read_thumb_32_instr_udf(raw); - - else if ((op1 & b101) == b100) - result = armv7_read_thumb_32_instr_bl_blx_immediate(raw); - - else if ((op1 & b101) == b101) - result = armv7_read_thumb_32_instr_bl_blx_immediate(raw); - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 classique. * -* * -* Retour : Désassemble une instruction ARMv7 liées au chapitre A6.3.4b. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_change_processor_state_and_hints(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op1; /* Champ 'op1' à retrouver */ - uint32_t op2; /* Champ 'op2' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.4 Branches and miscellaneous control - * |-> Change Processor State, and hints - */ - - if ((raw & 0xfff0d000) != 0xf3a08000) return NULL; - - result = NULL; - - op1 = (raw >> 8) & b111; - op2 = (raw >> 0) & b11111111; - - if (op1 != b000) - result = armv7_read_thumb_32_instr_cps_thumb(raw); - - else - { - if (op2 == b00000000) - result = armv7_read_thumb_32_instr_nop(raw); - - else if (op2 == b00000001) - result = armv7_read_thumb_32_instr_yield(raw); - - else if (op2 == b00000010) - result = armv7_read_thumb_32_instr_wfe(raw); - - else if (op2 == b00000011) - result = armv7_read_thumb_32_instr_wfi(raw); - - else if (op2 == b00000100) - result = armv7_read_thumb_32_instr_sev(raw); - - else if ((op2 & b11110000) == b11110000) - result = armv7_read_thumb_32_instr_dbg(raw); - - } - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.4t. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_miscellaneous_control_instructions(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op; /* Champ 'op' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.4 Branches and miscellaneous control - * |-> Miscellaneous control instructions - */ - - if ((raw & 0xfff0d000) != 0xf3b08000) return NULL; - - result = NULL; - - op = (raw >> 4) & b1111; - - switch (op) - { - case b0000: - result = armv7_read_thumb_32_instr_enterx_leavex(raw); - break; - - case b0001: - result = armv7_read_thumb_32_instr_enterx_leavex(raw); - break; - - case b0010: - result = armv7_read_thumb_32_instr_clrex(raw); - break; - - case b0100: - result = armv7_read_thumb_32_instr_dsb(raw); - break; - - case b0101: - result = armv7_read_thumb_32_instr_dmb(raw); - break; - - case b0110: - result = armv7_read_thumb_32_instr_isb(raw); - break; - - } - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.5. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_load_store_multiple(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op; /* Champ 'op' à retrouver */ - uint32_t l; /* Champ 'l' à retrouver */ - uint32_t wrn; /* Champ 'wrn' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.5 Load/store multiple - */ - - if ((raw & 0xfe400000) != 0xe8000000) return NULL; - - result = NULL; - - op = (raw >> 23) & b11; - l = (raw >> 20) & b1; - wrn = (((raw >> 21) & b1) << 4) | ((raw >> 16) & b1111); - - switch (op) - { - case b00: - - if (l == b0) - result = armv7_read_thumb_32_instr_srs_thumb(raw); - - else - result = armv7_read_thumb_32_instr_rfe(raw); - - break; - - case b01: - - if (l == b0) - result = armv7_read_thumb_32_instr_stm_stmia_stmea(raw); - - else - { - if (wrn == b11101) - result = armv7_read_thumb_32_instr_pop_thumb(raw); - - else - result = armv7_read_thumb_32_instr_ldm_ldmia_ldmfd_thumb(raw); - - } - - break; - - case b10: - - if (l == b0) - { - if (wrn == b11101) - result = armv7_read_thumb_32_instr_push(raw); - - else - result = armv7_read_thumb_32_instr_stmdb_stmfd(raw); - - } - - else - result = armv7_read_thumb_32_instr_ldmdb_ldmea(raw); - - break; - - case b11: - - if (l == b0) - result = armv7_read_thumb_32_instr_srs_thumb(raw); - - else - result = armv7_read_thumb_32_instr_rfe(raw); - - break; - - } - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.6. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_load_store_dual_load_store_exclusive_table_branch(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op1; /* Champ 'op1' à retrouver */ - uint32_t op2; /* Champ 'op2' à retrouver */ - uint32_t rn; /* Champ 'rn' à retrouver */ - uint32_t op3; /* Champ 'op3' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.6 Load/store dual, load/store exclusive, table branch - */ - - if ((raw & 0xfe400000) != 0xe8400000) return NULL; - - result = NULL; - - op1 = (raw >> 23) & 0x3; - op2 = (raw >> 20) & 0x3; - rn = (raw >> 16) & 0xf; - op3 = (raw >> 4) & 0xf; - - if (op1 == b00 && op2 == b00) - result = armv7_read_thumb_32_instr_strex(raw); - - else if (op1 == b00 && op2 == b01) - result = armv7_read_thumb_32_instr_ldrex(raw); - - else if ((op1 & b10) == b00 && op2 == b10) - result = armv7_read_thumb_32_instr_strd_immediate(raw); - - else if ((op1 & b10) == b10 && (op2 & b01) == b00) - result = armv7_read_thumb_32_instr_strd_immediate(raw); - - else if ((op1 & b10) == b00 && op2 == b11) - { - if (rn != b1111) - result = armv7_read_thumb_32_instr_ldrd_immediate(raw); - - else/* if (rn == b1111)*/ - result = armv7_read_thumb_32_instr_ldrd_literal(raw); - - } - - else if ((op1 & b10) == b10 && (op2 & b01) == b01) - { - if (rn != b1111) - result = armv7_read_thumb_32_instr_ldrd_immediate(raw); - - else/* if (rn == b1111)*/ - result = armv7_read_thumb_32_instr_ldrd_literal(raw); - - } - - else if (op1 == b01 && op2 == b00) - switch (op3) - { - case b0100: - result = armv7_read_thumb_32_instr_strexb(raw); - break; - - case b0101: - result = armv7_read_thumb_32_instr_strexh(raw); - break; - - case b0111: - result = armv7_read_thumb_32_instr_strexd(raw); - break; - - } - - else if (op1 == b01 && op2 == b01) - switch (op3) - { - case b0000: - result = armv7_read_thumb_32_instr_tbb_tbh(raw); - break; - - case b0001: - result = armv7_read_thumb_32_instr_tbb_tbh(raw); - break; - - case b0100: - result = armv7_read_thumb_32_instr_ldrexb(raw); - break; - - case b0101: - result = armv7_read_thumb_32_instr_ldrexh(raw); - break; - - case b0111: - result = armv7_read_thumb_32_instr_ldrexd(raw); - break; - - } - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.7. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_load_word(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op1; /* Champ 'op1' à retrouver */ - uint32_t rn; /* Champ 'rn' à retrouver */ - uint32_t op2; /* Champ 'op2' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.7 Load word - */ - - if ((raw & 0xfe700000) != 0xf8500000) return NULL; - - result = NULL; - - op1 = (raw >> 23) & b11; - rn = (raw >> 16) & b1111; - op2 = (raw >> 6) & b111111; - - switch (op1) - { - case b00: - - if (op2 == b000000 && rn != b1111) - result = armv7_read_thumb_32_instr_ldr_register_thumb(raw); - - else if ((op2 & b100100) == b100100 && rn != b1111) - result = armv7_read_thumb_32_instr_ldr_immediate_thumb(raw); - - else if ((op2 & b111100) == b110000 && rn != b1111) - result = armv7_read_thumb_32_instr_ldr_immediate_thumb(raw); - - else if ((op2 & b111100) == b111000 && rn != b1111) - result = armv7_read_thumb_32_instr_ldrt(raw); - - break; - - case b01: - if (rn != b1111) - result = armv7_read_thumb_32_instr_ldr_immediate_thumb(raw); - break; - - } - - if (result == NULL && (op1 & b10) == b00 && rn == b1111) - result = armv7_read_thumb_32_instr_ldr_literal(raw); - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.8. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_load_halfword_memory_hints(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op1; /* Champ 'op1' à retrouver */ - uint32_t rn; /* Champ 'rn' à retrouver */ - uint32_t rt; /* Champ 'rt' à retrouver */ - uint32_t op2; /* Champ 'op2' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.8 Load halfword, memory hints - */ - - if ((raw & 0xfe700000) != 0xf8300000) return NULL; - - result = NULL; - - op1 = (raw >> 23) & 0x3; - rn = (raw >> 16) & 0xf; - rt = (raw >> 12) & 0xf; - op2 = (raw >> 6) & 0x3f; - - if (rn == b1111) - { - if ((op1 & b10) == b00) - { - if (rt != b1111) - result = armv7_read_thumb_32_instr_ldrh_literal(raw); - - else/* if (rt == b1111)*/ - result = armv7_read_thumb_32_instr_pld_literal(raw); - - } - - else/* if ((op1 & b10) == b10)*/ - { - if (rt != b1111) - result = armv7_read_thumb_32_instr_ldrsh_literal(raw); - - else/* if (rt == b1111)*/ - result = g_undef_instruction_new(IBS_NOP); - - } - - } - - else/* if (rn != b1111)*/ - { - if (op1 == b00) - { - if ((op2 & b100100) == b100100) - result = armv7_read_thumb_32_instr_ldrh_immediate_thumb(raw); - - else if ((op2 & b111100) == b110000 && rt != b1111) - result = armv7_read_thumb_32_instr_ldrh_immediate_thumb(raw); - - else if (op2 == b000000 && rt != b1111) - result = armv7_read_thumb_32_instr_ldrh_register(raw); - - else if ((op2 & b111100) == b111000) - result = armv7_read_thumb_32_instr_ldrht(raw); - - else if (op2 == b000000 && rt == b1111) - result = armv7_read_thumb_32_instr_pld_pldw_register(raw); - - else if ((op2 & b111100) == b110000 && rt == b1111) - result = armv7_read_thumb_32_instr_pld_pldw_immediate(raw); - - } - - else if (op1 == b01) - { - if (rt != b1111) - result = armv7_read_thumb_32_instr_ldrh_immediate_thumb(raw); - - else/* if (rt == b1111)*/ - result = armv7_read_thumb_32_instr_pld_pldw_immediate(raw); - - } - - else if (op1 == b10) - { - if ((op2 & b100100) == b100100) - result = armv7_read_thumb_32_instr_ldrsh_immediate(raw); - - else if ((op2 & b111100) == b110000 && rt != b1111) - result = armv7_read_thumb_32_instr_ldrsh_immediate(raw); - - else if (op2 == b000000 && rt != b1111) - result = armv7_read_thumb_32_instr_ldrsh_register(raw); - - else if ((op2 & b111100) == b111000) - result = armv7_read_thumb_32_instr_ldrsht(raw); - - else if (op2 == b000000 && rt == b1111) - result = g_undef_instruction_new(IBS_NOP); - - else if ((op2 & b111100) == b110000 && rt == b1111) - result = g_undef_instruction_new(IBS_NOP); - - } - - else if (op1 == b11) - { - if (rt != b1111) - result = armv7_read_thumb_32_instr_ldrsh_immediate(raw); - - else/* if (rt == b1111)*/ - result = g_undef_instruction_new(IBS_NOP); - - } - - } - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.9. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_load_byte_memory_hints(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op1; /* Champ 'op1' à retrouver */ - uint32_t rn; /* Champ 'rn' à retrouver */ - uint32_t rt; /* Champ 'rt' à retrouver */ - uint32_t op2; /* Champ 'op2' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.9 Load byte, memory hints - */ - - if ((raw & 0xfe700000) != 0xf8100000) return NULL; - - result = NULL; - - op1 = (raw >> 23) & b11; - rn = (raw >> 16) & b1111; - rt = (raw >> 12) & b1111; - op2 = (raw >> 6) & b111111; - - if (op1 == b00 && op2 == b000000 && rn != b1111) - { - if (rt != b1111) - result = armv7_read_thumb_32_instr_ldrb_register(raw); - - else /*if (rt == b1111) */ - result = armv7_read_thumb_32_instr_pld_register(raw); - - } - - else if ((op1 & b10) == b00 && rn == b1111) - { - if (rt != b1111) - result = armv7_read_thumb_32_instr_ldrb_literal(raw); - - else /*if (rt == b1111) */ - result = armv7_read_thumb_32_instr_pld_literal(raw); - - } - - else if (op1 == b00 && (op2 & b100100) == b100100 && rn != b1111) - result = armv7_read_thumb_32_instr_ldrb_immediate_thumb(raw); - - else if (op1 == b00 && (op2 & b111100) == b110000 && rn != b1111) - { - if (rt != b1111) - result = armv7_read_thumb_32_instr_ldrb_immediate_thumb(raw); - - else /*if (rt == b1111) */ - result = armv7_read_thumb_32_instr_pld_immediate(raw); - - } - - else if (op1 == b00 && (op2 & b111100) == b111000 && rn != b1111) - result = armv7_read_thumb_32_instr_ldrbt(raw); - - else if (op1 == b01 && rn != b1111) - { - if (rt != b1111) - result = armv7_read_thumb_32_instr_ldrb_immediate_thumb(raw); - - else /*if (rt == b1111) */ - result = armv7_read_thumb_32_instr_pld_immediate(raw); - - } - - if (op1 == b10 && op2 == b000000 && rn != b1111) - { - if (rt != b1111) - result = armv7_read_thumb_32_instr_ldrsb_register(raw); - else /*if (rt == b1111) */ - result = armv7_read_thumb_32_instr_pli_register(raw); - } - - else if ((op1 & b10) == b10 && rn == b1111) - { - if (rt != b1111) - result = armv7_read_thumb_32_instr_ldrsb_literal(raw); - - else /*if (rt == b1111) */ - result = armv7_read_thumb_32_instr_pli_immediate_literal(raw); - - } - - else if (op1 == b10 && (op2 & b100100) == b100100 && rn != b1111) - result = armv7_read_thumb_32_instr_ldrsb_immediate(raw); - - else if (op1 == b10 && (op2 & b111100) == b110000 && rn != b1111) - { - if (rt != b1111) - result = armv7_read_thumb_32_instr_ldrsb_immediate(raw); - - else /*if (rt == b1111) */ - result = armv7_read_thumb_32_instr_pli_immediate_literal(raw); - - } - - else if (op1 == b10 && (op2 & b111100) == b111000 && rn != b1111) - result = armv7_read_thumb_32_instr_ldrsbt(raw); - - else if (op1 == b11 && rn != b1111) - { - if (rt != b1111) - result = armv7_read_thumb_32_instr_ldrsb_immediate(raw); - - else /*if (rt == b1111) */ - result = armv7_read_thumb_32_instr_pli_immediate_literal(raw); - - } - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.10. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_store_single_data_item(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op1; /* Champ 'op1' à retrouver */ - uint32_t op2; /* Champ 'op2' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.10 Store single data item - */ - - if ((raw & 0xff100000) != 0xf8000000) return NULL; - - result = NULL; - - op1 = (raw >> 21) & b111; - op2 = (raw >> 6) & b111111; - - switch (op1) - { - case b000: - - if (op2 == b000000) - result = armv7_read_thumb_32_instr_strb_register(raw); - - else if ((op2 & b100100) == b100100) - result = armv7_read_thumb_32_instr_strb_immediate_thumb(raw); - - else if ((op2 & b111100) == b110000) - result = armv7_read_thumb_32_instr_strb_immediate_thumb(raw); - - else if ((op2 & b111100) == b111000) - result = armv7_read_thumb_32_instr_strbt(raw); - - break; - - case b001: - - if (op2 == b000000) - result = armv7_read_thumb_32_instr_strh_register(raw); - - else if ((op2 & b100100) == b100100) - result = armv7_read_thumb_32_instr_strh_immediate_thumb(raw); - - else if ((op2 & b111100) == b110000) - result = armv7_read_thumb_32_instr_strh_immediate_thumb(raw); - - else if ((op2 & b111100) == b111000) - result = armv7_read_thumb_32_instr_strht(raw); - - break; - - case b010: - - if (op2 == b000000) - result = armv7_read_thumb_32_instr_str_register(raw); - - else if ((op2 & b100100) == b100100) - result = armv7_read_thumb_32_instr_str_immediate_thumb(raw); - - else if ((op2 & b111100) == b110000) - result = armv7_read_thumb_32_instr_str_immediate_thumb(raw); - - else if ((op2 & b111100) == b111000) - result = armv7_read_thumb_32_instr_strt(raw); - - break; - - case b100: - result = armv7_read_thumb_32_instr_strb_immediate_thumb(raw); - break; - - case b101: - result = armv7_read_thumb_32_instr_strh_immediate_thumb(raw); - break; - - case b110: - result = armv7_read_thumb_32_instr_str_immediate_thumb(raw); - break; - - } - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.11. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_data_processing_shifted_register(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op; /* Champ 'op' à retrouver */ - uint32_t rn; /* Champ 'rn' à retrouver */ - uint32_t rds; /* Champ 'rds' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.11 Data-processing (shifted register) - */ - - if ((raw & 0xfe000000) != 0xea000000) return NULL; - - result = NULL; - - op = (raw >> 21) & b1111; - rn = (raw >> 16) & b1111; - rds = (((raw >> 8) & b1111) << 1) | ((raw >> 20) & b1); - - switch (op) - { - case b0000: - - if (rds == b11111) - result = armv7_read_thumb_32_instr_tst_register(raw); - - else - result = armv7_read_thumb_32_instr_and_register(raw); - - break; - - case b0001: - result = armv7_read_thumb_32_instr_bic_register(raw); - break; - - case b0010: - - if (rn == b11111) - result = process_armv7_thumb_32_move_register_and_immediate_shifts(raw); - - else - result = armv7_read_thumb_32_instr_orr_register(raw); - - break; - - case b0011: - - if (rn == b11111) - result = armv7_read_thumb_32_instr_mvn_register(raw); - - else - result = armv7_read_thumb_32_instr_orn_register(raw); - - break; - - case b0100: - - if (rds == b11111) - result = armv7_read_thumb_32_instr_teq_register(raw); - - else - result = armv7_read_thumb_32_instr_eor_register(raw); - - break; - - case b0110: - result = armv7_read_thumb_32_instr_pkh(raw); - break; - - case b1000: - - if (rds == b11111) - result = armv7_read_thumb_32_instr_cmn_register(raw); - - else - result = armv7_read_thumb_32_instr_add_register_thumb(raw); - - break; - - case b1010: - result = armv7_read_thumb_32_instr_adc_register(raw); - break; - - case b1011: - result = armv7_read_thumb_32_instr_sbc_register(raw); - break; - - case b1101: - - if (rds == b11111) - result = armv7_read_thumb_32_instr_cmp_register(raw); - - else - result = armv7_read_thumb_32_instr_sub_register_thumb(raw); - - break; - - case b1110: - result = armv7_read_thumb_32_instr_rsb_register(raw); - break; - - } - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.11b.* -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_move_register_and_immediate_shifts(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t imm5; /* Champs 'imm[32]' à retrouver*/ - uint32_t type; /* Champ 'type' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.11 Data-processing (shifted register) - * |-> Move register and immediate shifts - */ - - if ((raw & 0xffef0000) != 0xea4f0000) return NULL; - - result = NULL; - - imm5 = (((raw >> 12) & 0x7) << 2) | ((raw >> 6) & 0x3); - type = (raw >> 4) & 0x3; - - switch (type) - { - case b00: - - if (imm5 == b00000) - result = armv7_read_thumb_32_instr_mov_register_thumb(raw); - - else/* if (imm5 != b00000)*/ - result = armv7_read_thumb_32_instr_lsl_immediate(raw); - - break; - - case b01: - result = armv7_read_thumb_32_instr_lsr_immediate(raw); - break; - - case b10: - result = armv7_read_thumb_32_instr_asr_immediate(raw); - break; - - case b11: - - if (imm5 == b00000) - result = armv7_read_thumb_32_instr_rrx(raw); - - else/* if (imm5 != b00000)*/ - result = armv7_read_thumb_32_instr_ror_immediate(raw); - - break; - - } - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.12. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_data_processing_register(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op1; /* Champ 'op1' à retrouver */ - uint32_t rn; /* Champ 'rn' à retrouver */ - uint32_t op2; /* Champ 'op2' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.12 Data-processing (register) - */ - - if ((raw & 0xff00f000) != 0xfa00f000) return NULL; - - result = NULL; - - op1 = (raw >> 20) & b1111; - rn = (raw >> 16) & b1111; - op2 = (raw >> 4) & b1111; - - if ((op1 & b1110) == b0000 && op2 == b0000) - result = armv7_read_thumb_32_instr_lsl_register(raw); - - else if ((op1 & b1110) == b0010 && op2 == b0000) - result = armv7_read_thumb_32_instr_lsr_register(raw); - - else if ((op1 & b1110) == b0100 && op2 == b0000) - result = armv7_read_thumb_32_instr_asr_register(raw); - - else if ((op1 & b1110) == b0110 && op2 == b0000) - result = armv7_read_thumb_32_instr_ror_register(raw); - - else if (op1 == b0000 && (op2 & b1000) == b1000) - { - if (rn == b1111) - result = armv7_read_thumb_32_instr_sxth(raw); - - else - result = armv7_read_thumb_32_instr_sxtah(raw); - - } - - else if (op1 == b0001 && (op2 & b1000) == b1000) - { - if (rn == b1111) - result = armv7_read_thumb_32_instr_uxth(raw); - - else - result = armv7_read_thumb_32_instr_uxtah(raw); - - } - - else if (op1 == b0010 && (op2 & b1000) == b1000) - { - if (rn == b1111) - result = armv7_read_thumb_32_instr_sxtb16(raw); - - else - result = armv7_read_thumb_32_instr_sxtab16(raw); - - } - - else if (op1 == b0011 && (op2 & b1000) == b1000) - { - if (rn == b1111) - result = armv7_read_thumb_32_instr_uxtb16(raw); - - else - result = armv7_read_thumb_32_instr_uxtab16(raw); - - } - - else if (op1 == b0100 && (op2 & b1000) == b1000) - { - if (rn == b1111) - result = armv7_read_thumb_32_instr_sxtb(raw); - - else - result = armv7_read_thumb_32_instr_sxtab(raw); - - } - - else if (op1 == b0101 && (op2 & b1000) == b1000) - { - if (rn == b1111) - result = armv7_read_thumb_32_instr_uxtb(raw); - - else - result = armv7_read_thumb_32_instr_uxtab(raw); - - } - - else if ((op1 & b1000) == b1000 && (op2 & b1100) == b0000) - result = process_armv7_thumb_32_parallel_addition_and_subtraction_signed(raw); - - else if ((op1 & b1000) == b1000 && (op2 & b1100) == b0100) - result = process_armv7_thumb_32_parallel_addition_and_subtraction_unsigned(raw); - - else if ((op1 & b1100) == b1000 && (op2 & b1100) == b1000) - result = process_armv7_thumb_32_miscellaneous_operations(raw); - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.13. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_parallel_addition_and_subtraction_signed(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op1; /* Champ 'op1' à retrouver */ - uint32_t op2; /* Champ 'op2' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.13 Parallel addition and subtraction, signed - */ - - if ((raw & 0xff80f000) != 0xfa80f000) return NULL; - - result = NULL; - - op1 = (raw >> 20) & b111; - op2 = (raw >> 4) & b11; - - switch (op2) - { - case b00: - switch (op1) - { - case b001: - result = armv7_read_thumb_32_instr_sadd16(raw); - break; - - case b010: - result = armv7_read_thumb_32_instr_sasx(raw); - break; - - case b110: - result = armv7_read_thumb_32_instr_ssax(raw); - break; - - case b101: - result = armv7_read_thumb_32_instr_ssub16(raw); - break; - - case b000: - result = armv7_read_thumb_32_instr_sadd8(raw); - break; - - case b100: - result = armv7_read_thumb_32_instr_ssub8(raw); - break; - - } - break; - - case b01: - switch (op1) - { - case b001: - result = armv7_read_thumb_32_instr_sqadd16(raw); - break; - - case b010: - result = armv7_read_thumb_32_instr_sqasx(raw); - break; - - case b110: - result = armv7_read_thumb_32_instr_sqsax(raw); - break; - - case b101: - result = armv7_read_thumb_32_instr_sqsub16(raw); - break; - - case b000: - result = armv7_read_thumb_32_instr_sqadd8(raw); - break; - - case b100: - result = armv7_read_thumb_32_instr_sqsub8(raw); - break; - - } - break; - - case b10: - switch (op1) - { - case b001: - result = armv7_read_thumb_32_instr_shadd16(raw); - break; - - case b010: - result = armv7_read_thumb_32_instr_shasx(raw); - break; - - case b110: - result = armv7_read_thumb_32_instr_shsax(raw); - break; - - case b101: - result = armv7_read_thumb_32_instr_shsub16(raw); - break; - - case b000: - result = armv7_read_thumb_32_instr_shadd8(raw); - break; - - case b100: - result = armv7_read_thumb_32_instr_shsub8(raw); - break; - - } - break; - - } - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.14. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_parallel_addition_and_subtraction_unsigned(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op1; /* Champ 'op1' à retrouver */ - uint32_t op2; /* Champ 'op2' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.14 Parallel addition and subtraction, unsigned - */ - - if ((raw & 0xff80f0c0) != 0xfa80f040) return NULL; - - result = NULL; - - op1 = (raw >> 20) & b111; - op2 = (raw >> 4) & b11; - - switch (op2) - { - case b00: - switch (op1) - { - case b001: - result = armv7_read_thumb_32_instr_uadd16(raw); - break; - - case b010: - result = armv7_read_thumb_32_instr_uasx(raw); - break; - - case b110: - result = armv7_read_thumb_32_instr_usax(raw); - break; - - case b101: - result = armv7_read_thumb_32_instr_usub16(raw); - break; - - case b000: - result = armv7_read_thumb_32_instr_uadd8(raw); - break; - - case b100: - result = armv7_read_thumb_32_instr_usub8(raw); - break; - - } - break; - - case b01: - switch (op1) - { - case b001: - result = armv7_read_thumb_32_instr_uqadd16(raw); - break; - - case b010: - result = armv7_read_thumb_32_instr_uqasx(raw); - break; - - case b110: - result = armv7_read_thumb_32_instr_uqsax(raw); - break; - - case b101: - result = armv7_read_thumb_32_instr_uqsub16(raw); - break; - - case b000: - result = armv7_read_thumb_32_instr_uqadd8(raw); - break; - - case b100: - result = armv7_read_thumb_32_instr_uqsub8(raw); - break; - - } - break; - - case b10: - switch (op1) - { - case b001: - result = armv7_read_thumb_32_instr_uhadd16(raw); - break; - - case b010: - result = armv7_read_thumb_32_instr_uhasx(raw); - break; - - case b110: - result = armv7_read_thumb_32_instr_uhsax(raw); - break; - - case b101: - result = armv7_read_thumb_32_instr_uhsub16(raw); - break; - - case b000: - result = armv7_read_thumb_32_instr_uhadd8(raw); - break; - - case b100: - result = armv7_read_thumb_32_instr_uhsub8(raw); - break; - - } - break; - - } - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.15. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_miscellaneous_operations(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op1; /* Champ 'op1' à retrouver */ - uint32_t op2; /* Champ 'op2' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.15 Miscellaneous operations - */ - - if ((raw & 0xffc0f0c0) != 0xfa80f080) return NULL; - - result = NULL; - - op1 = (raw >> 20) & b11; - op2 = (raw >> 4) & b11; - - switch (op1) - { - case b00: - switch (op2) - { - case b00: - result = armv7_read_thumb_32_instr_qadd(raw); - break; - - case b01: - result = armv7_read_thumb_32_instr_qdadd(raw); - break; - - case b10: - result = armv7_read_thumb_32_instr_qsub(raw); - break; - - case b11: - result = armv7_read_thumb_32_instr_qdsub(raw); - break; - - } - break; - - case b01: - switch (op2) - { - case b00: - result = armv7_read_thumb_32_instr_rev(raw); - break; - - case b01: - result = armv7_read_thumb_32_instr_rev16(raw); - break; - - case b10: - result = armv7_read_thumb_32_instr_rbit(raw); - break; - - case b11: - result = armv7_read_thumb_32_instr_revsh(raw); - break; - - } - break; - - case b10: - if (op2 == b00) - result = armv7_read_thumb_32_instr_sel(raw); - break; - - case b11: - if (op2 == b00) - result = armv7_read_thumb_32_instr_clz(raw); - break; - - } - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.16. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_multiply_multiply_accumulate_and_absolute_difference(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op1; /* Champ 'op1' à retrouver */ - uint32_t ra; /* Champ 'ra' à retrouver */ - uint32_t op2; /* Champ 'op2' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.16 Multiply, multiply accumulate, and absolute difference - */ - - if ((raw & 0xff8000c0) != 0xfb000000) return NULL; - - result = NULL; - - op1 = (raw >> 20) & b111; - ra = (raw >> 12) & b1111; - op2 = (raw >> 4) & b11; - - switch (op1) - { - case b000: - - if (op2 == b00) - { - if (ra == b1111) - result = armv7_read_thumb_32_instr_mul(raw); - - else - result = armv7_read_thumb_32_instr_mla(raw); - - } - - else if (op2 == b01) - result = armv7_read_thumb_32_instr_mls(raw); - - break; - - case b001: - - if (ra == b1111) - result = armv7_read_thumb_32_instr_smulbb_smulbt_smultb_smultt(raw); - - else - result = armv7_read_thumb_32_instr_smlabb_smlabt_smlatb_smlatt(raw); - - break; - - case b010: - if ((op2 & b10) == b00) - { - if (ra == b1111) - result = armv7_read_thumb_32_instr_smuad(raw); - - else - result = armv7_read_thumb_32_instr_smlad(raw); - - } - break; - - case b011: - if ((op2 & b10) == b00) - { - if (ra == b1111) - result = armv7_read_thumb_32_instr_smulwb_smulwt(raw); - - else - result = armv7_read_thumb_32_instr_smlawb_smlawt(raw); - - } - break; - - case b100: - if ((op2 & b10) == b00) - { - if (ra == b1111) - result = armv7_read_thumb_32_instr_smusd(raw); - - else - result = armv7_read_thumb_32_instr_smlsd(raw); - - } - break; - - case b101: - if ((op2 & b10) == b00) - { - if (ra == b1111) - result = armv7_read_thumb_32_instr_smmul(raw); - - else - result = armv7_read_thumb_32_instr_smmla(raw); - - } - break; - - case b110: - if ((op2 & b10) == b00) - result = armv7_read_thumb_32_instr_smmls(raw); - break; - - case b111: - if (op2 == b00) - { - if (ra == b1111) - result = armv7_read_thumb_32_instr_usad8(raw); - - else - result = armv7_read_thumb_32_instr_usada8(raw); - - } - break; - - } - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.17. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_long_multiply_long_multiply_accumulate_and_divide(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op1; /* Champ 'op1' à retrouver */ - uint32_t op2; /* Champ 'op2' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.17 Long multiply, long multiply accumulate, and divide - */ - - if ((raw & 0xff800000) != 0xfb800000) return NULL; - - result = NULL; - - op1 = (raw >> 20) & b111; - op2 = (raw >> 4) & b1111; - - switch (op1) - { - case b000: - if (op2 == b0000) - result = armv7_read_thumb_32_instr_smull(raw); - break; - - case b001: - if (op2 == b1111) - result = armv7_read_thumb_32_instr_sdiv(raw); - break; - - case b010: - if (op2 == b0000) - result = armv7_read_thumb_32_instr_umull(raw); - break; - - case b011: - if (op2 == b1111) - result = armv7_read_thumb_32_instr_udiv(raw); - break; - - case b100: - - if (op2 == b0000) - result = armv7_read_thumb_32_instr_smlal(raw); - - else if ((op2 & b1100) == b1000) - result = armv7_read_thumb_32_instr_smlalbb_smlalbt_smlaltb_smlaltt(raw); - - else if ((op2 & b1110) == b1100) - result = armv7_read_thumb_32_instr_smlald(raw); - - break; - - case b101: - if ((op2 & b1110) == b1100) - result = armv7_read_thumb_32_instr_smlsld(raw); - break; - - case b110: - - if (op2 == b0000) - result = armv7_read_thumb_32_instr_umlal(raw); - - else if (op2 == b0110) - result = armv7_read_thumb_32_instr_umaal(raw); - - break; - - } - - return result; - -} - - -/****************************************************************************** -* * -* Paramètres : raw = donnée brute de 32 bits à désassembler. * -* * -* Description : Désassemble une instruction ARMv7 liées au chapitre A6.3.18. * -* * -* Retour : Instruction mise en place ou NULL en cas d'échec. * -* * -* Remarques : - * -* * -******************************************************************************/ - -static GArchInstruction *process_armv7_thumb_32_coprocessor_advanced_simd_and_floating_point_instructions(uint32_t raw) -{ - GArchInstruction *result; /* Instruction à renvoyer */ - uint32_t op1; /* Champ 'op1' à retrouver */ - uint32_t rn; /* Champ 'rn' à retrouver */ - uint32_t coproc; /* Champ 'coproc' à retrouver */ - uint32_t op; /* Champ 'op' à retrouver */ - - /** - * Suit les directives de : - * § A6.3.18 Coprocessor, Advanced SIMD, and Floating-point instructions - */ - - if ((raw & 0xec000000) != 0xec000000) return NULL; - - result = NULL; - - op1 = (raw >> 20) & 0x3f; - rn = (raw >> 16) & 0xf; - coproc = (raw >> 8) & 0xf; - op = (raw >> 4) & 0x1; - - if ((op1 & b111110) == b000000) - result = g_undef_instruction_new(IBS_UNDEFINED); - - else if ((op1 & b110000) == b110000) - result = process_armv7_simd_advanced_simd_data_processing_instructions(raw, false); - - else if ((coproc & b1110) != b1010) - { - if ((op1 & b100001) == b000000 && (op1 & b111010) != b000000) - result = armv7_read_thumb_32_instr_stc_stc2(raw); - - else if ((op1 & b100001) == b000001 && (op1 & b111010) != b000000) - { - if (rn != b1111) - result = armv7_read_thumb_32_instr_ldc_ldc2_immediate(raw); - - else/* if (rn == b1111)*/ - result = armv7_read_thumb_32_instr_ldc_ldc2_literal(raw); - - } - - else if (op1 == b000100) - result = armv7_read_thumb_32_instr_mcrr_mcrr2(raw); - - else if (op1 == b000101) - result = armv7_read_thumb_32_instr_mrrc_mrrc2(raw); - - else if ((op1 & b110000) == b100000 && op == b0) - result = armv7_read_thumb_32_instr_cdp_cdp2(raw); - - else if ((op1 & b110001) == b100000 && op == b1) - result = armv7_read_thumb_32_instr_mcr_mcr2(raw); - - else if ((op1 & b110001) == b100001 && op == b1) - result = armv7_read_thumb_32_instr_mrc_mrc2(raw); - - } - - else if ((coproc & b1110) == b1010) - { - if ((op1 & b100000) == b000000 && (op1 & b111010) != b000000) - result = process_armv7_simd_extension_register_load_store_instructions(raw, false); - - else if ((op1 & b111110) == b000100) - result = process_armv7_simd_64_bit_transfers_between_arm_core_and_extension_registers(raw, false); - - else if ((op1 & b110000) == b100000) - { - if (op == b0) - result = process_armv7_simd_floating_point_data_processing_instructions(raw, false); - - else/* if (op == b1)*/ - result = process_armv7_simd_8_16_and_32_bit_transfer_between_arm_core_and_extension_registers(raw, false); - - } - - } - - return result; - -} |