/* 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 Chrysalide. If not, see . */ #include "thumb_32.h" #include #include #include #include "opcodes/thumb_32_opcodes.h" #include "opcodes/opcodes_tmp_thumb_32.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); /* Désassemble une instruction ARMv7 liées au chapitre A7.4. */ static GArchInstruction *process_armv7_thumb_32_advanced_simd_data_processing_instructions(uint32_t); /* Désassemble une instruction ARMv7 liées au chapitre A7.4.1. */ static GArchInstruction *process_armv7_thumb_32_three_registers_of_the_same_length(uint32_t); /* Désassemble une instruction ARMv7 liées au chapitre A7.4.2. */ static GArchInstruction *process_armv7_thumb_32_three_registers_of_different_lengths(uint32_t); /* Désassemble une instruction ARMv7 liées au chapitre A7.4.3. */ static GArchInstruction *process_armv7_thumb_32_two_registers_and_a_scalar(uint32_t); /* Désassemble une instruction ARMv7 liées au chapitre A7.4.4. */ static GArchInstruction *process_armv7_thumb_32_two_registers_and_a_shift_amount(uint32_t); /* Désassemble une instruction ARMv7 liées au chapitre A7.4.5. */ static GArchInstruction *process_armv7_thumb_32_two_registers_miscellaneous(uint32_t); /* Désassemble une instruction ARMv7 liées au chapitre A7.4.6. */ static GArchInstruction *process_armv7_thumb_32_one_register_and_a_modified_immediate_value(uint32_t); /* Désassemble une instruction ARMv7 liées au chapitre A7.5. */ static GArchInstruction *process_armv7_thumb_32_floating_point_data_processing_instructions(uint32_t); /* Désassemble une instruction ARMv7 liées au chapitre A7.6. */ static GArchInstruction *process_armv7_thumb_32_extension_register_load_store_instructions(uint32_t); /* Désassemble une instruction ARMv7 liées au chapitre A7.7. */ static GArchInstruction *process_armv7_thumb_32_advanced_simd_element_or_structure_load_store_instructions(uint32_t); /* Désassemble une instruction ARMv7 liées au chapitre A7.8. */ static GArchInstruction *process_armv7_thumb_32_8_16_and_32_bit_transfer_between_arm_core_and_extension_registers(uint32_t); /* Désassemble une instruction ARMv7 liées au chapitre A7.9. */ static GArchInstruction *process_armv7_thumb_32_64_bit_transfers_between_arm_core_and_extension_registers(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_thumb_32_advanced_simd_element_or_structure_load_store_instructions(raw); 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_a8_tst_immediate(raw); else result = armv7_read_thumb_32_instr_a8_and_immediate(raw); break; case b0001: result = armv7_read_thumb_32_instr_a8_bic_immediate(raw); break; case b0010: if (rn == b1111) result = armv7_read_thumb_32_instr_a8_mov_immediate(raw); else result = armv7_read_thumb_32_instr_a8_orr_immediate(raw); break; case b0011: if (rn == b1111) result = armv7_read_thumb_32_instr_a8_mvn_immediate(raw); else result = armv7_read_thumb_32_instr_a8_orn_immediate(raw); break; case b0100: if (rds == b11111) result = armv7_read_thumb_32_instr_a8_teq_immediate(raw); else result = armv7_read_thumb_32_instr_a8_eor_immediate(raw); break; case b1000: if (rds == b11111) result = armv7_read_thumb_32_instr_a8_cmn_immediate(raw); else result = armv7_read_thumb_32_instr_a8_add_immediate_thumb(raw); break; case b1010: result = armv7_read_thumb_32_instr_a8_adc_immediate(raw); break; case b1011: result = armv7_read_thumb_32_instr_a8_sbc_immediate(raw); break; case b1101: if (rds == b11111) result = armv7_read_thumb_32_instr_a8_cmp_immediate(raw); else result = armv7_read_thumb_32_instr_a8_sub_immediate_thumb(raw); break; case b1110: result = armv7_read_thumb_32_instr_a8_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_a8_adr(raw); else result = armv7_read_thumb_32_instr_a8_add_immediate_thumb(raw); break; case b00100: result = armv7_read_thumb_32_instr_a8_mov_immediate(raw); break; case b01010: if (rn == b11111) result = armv7_read_thumb_32_instr_a8_adr(raw); else result = armv7_read_thumb_32_instr_a8_sub_immediate_thumb(raw); break; case b01100: result = armv7_read_thumb_32_instr_a8_movt(raw); break; case b10000: result = armv7_read_thumb_32_instr_a8_ssat(raw); break; case b10010: if ((raw & 0x000070c0) != 0) result = armv7_read_thumb_32_instr_a8_ssat(raw); else result = armv7_read_thumb_32_instr_a8_ssat16(raw); break; case b10100: result = armv7_read_thumb_32_instr_a8_sbfx(raw); break; case b10110: if (rn == b11111) result = armv7_read_thumb_32_instr_a8_bfc(raw); else result = armv7_read_thumb_32_instr_a8_bfi(raw); break; case b11000: result = armv7_read_thumb_32_instr_a8_usat(raw); break; case b11010: if ((raw & 0x000070c0) != 0) result = armv7_read_thumb_32_instr_a8_usat(raw); else result = armv7_read_thumb_32_instr_a8_usat16(raw); break; case b11100: result = armv7_read_thumb_32_instr_a8_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_b9_hvc(raw); else if (op1 == b000 && op == b1111111) result = armv7_read_thumb_32_instr_b9_smc_previously_smi(raw); else if ((op1 & b101) == b000) { if ((op & b0111000) != b0111000) result = armv7_read_thumb_32_instr_a8_b(raw); else if ((imm8 & b00100000) == b00100000 && (op & b1111110) == b0111000) result = armv7_read_thumb_32_instr_b9_msr_banked_register(raw); else if ((imm8 & b00100000) == b00000000 && op == b0111000 && (op2 & b0011) == b0000) result = armv7_read_thumb_32_instr_a8_msr_register(raw); else if ((imm8 & b00100000) == b00000000 && op == b0111000 && (op2 & b0011) == b0001) result = armv7_read_thumb_32_instr_b9_msr_register(raw); else if ((imm8 & b00100000) == b00000000 && op == b0111000 && (op2 & b0010) == b0010) result = armv7_read_thumb_32_instr_b9_msr_register(raw); else if ((imm8 & b00100000) == b00000000 && op == b0111001) result = armv7_read_thumb_32_instr_b9_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_a8_bxj(raw); else if (imm8 == b00000000 && op == b0111101) result = armv7_read_thumb_32_instr_b9_eret(raw); else if (imm8 != b00000000 && op == b0111101) result = armv7_read_thumb_32_instr_b9_subs_pc_lr_thumb(raw); else if ((imm8 & b00100000) == b00100000 && (op & b1111110) == b0111110) result = armv7_read_thumb_32_instr_b9_mrs_banked_register(raw); else if ((imm8 & b00100000) == b00000000 && op == b0111110) result = armv7_read_thumb_32_instr_a8_mrs(raw); else if ((imm8 & b00100000) == b00000000 && op == b0111111) result = armv7_read_thumb_32_instr_b9_mrs(raw); } else if ((op1 & b101) == b001) result = armv7_read_thumb_32_instr_a8_b(raw); else if (op1 == b010 && op == b1111111) result = armv7_read_thumb_32_instr_a8_udf(raw); else if ((op1 & b101) == b100) result = armv7_read_thumb_32_instr_a8_bl_blx_immediate(raw); else if ((op1 & b101) == b101) result = armv7_read_thumb_32_instr_a8_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_b9_cps_thumb(raw); else { if (op2 == b00000000) result = armv7_read_thumb_32_instr_a8_nop(raw); else if (op2 == b00000001) result = armv7_read_thumb_32_instr_a8_yield(raw); else if (op2 == b00000010) result = armv7_read_thumb_32_instr_a8_wfe(raw); else if (op2 == b00000011) result = armv7_read_thumb_32_instr_a8_wfi(raw); else if (op2 == b00000100) result = armv7_read_thumb_32_instr_a8_sev(raw); else if ((op2 & b11110000) == b11110000) result = armv7_read_thumb_32_instr_a8_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_a9_enterx_leavex(raw); break; case b0001: result = armv7_read_thumb_32_instr_a9_enterx_leavex(raw); break; case b0010: result = armv7_read_thumb_32_instr_a8_clrex(raw); break; case b0100: result = armv7_read_thumb_32_instr_a8_dsb(raw); break; case b0101: result = armv7_read_thumb_32_instr_a8_dmb(raw); break; case b0110: result = armv7_read_thumb_32_instr_a8_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_b9_srs_thumb(raw); else result = armv7_read_thumb_32_instr_b9_rfe(raw); break; case b01: if (l == b0) result = armv7_read_thumb_32_instr_a8_stm_stmia_stmea(raw); else { if (wrn == b11101) result = armv7_read_thumb_32_instr_a8_pop_thumb(raw); else result = armv7_read_thumb_32_instr_a8_ldm_ldmia_ldmfd_thumb(raw); } break; case b10: if (l == b0) { if (wrn == b11101) result = armv7_read_thumb_32_instr_a8_push(raw); else result = armv7_read_thumb_32_instr_a8_stmdb_stmfd(raw); } else result = armv7_read_thumb_32_instr_a8_ldmdb_ldmea(raw); break; case b11: if (l == b0) result = armv7_read_thumb_32_instr_b9_srs_thumb(raw); else result = armv7_read_thumb_32_instr_b9_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_a8_strex(raw); else if (op1 == b00 && op2 == b01) result = armv7_read_thumb_32_instr_a8_ldrex(raw); else if ((op1 & b10) == b00 && op2 == b10) result = armv7_read_thumb_32_instr_a8_strd_immediate(raw); else if ((op1 & b10) == b10 && (op2 & b01) == b00) result = armv7_read_thumb_32_instr_a8_strd_immediate(raw); else if ((op1 & b10) == b00 && op2 == b11) { if (rn != b1111) result = armv7_read_thumb_32_instr_a8_ldrd_immediate(raw); else/* if (rn == b1111)*/ result = armv7_read_thumb_32_instr_a8_ldrd_literal(raw); } else if ((op1 & b10) == b10 && (op2 & b01) == b01) { if (rn != b1111) result = armv7_read_thumb_32_instr_a8_ldrd_immediate(raw); else/* if (rn == b1111)*/ result = armv7_read_thumb_32_instr_a8_ldrd_literal(raw); } else if (op1 == b01 && op2 == b00) switch (op3) { case b0100: result = armv7_read_thumb_32_instr_a8_strexb(raw); break; case b0101: result = armv7_read_thumb_32_instr_a8_strexh(raw); break; case b0111: result = armv7_read_thumb_32_instr_a8_strexd(raw); break; } else if (op1 == b01 && op2 == b01) switch (op3) { case b0000: result = armv7_read_thumb_32_instr_a8_tbb_tbh(raw); break; case b0001: result = armv7_read_thumb_32_instr_a8_tbb_tbh(raw); break; case b0100: result = armv7_read_thumb_32_instr_a8_ldrexb(raw); break; case b0101: result = armv7_read_thumb_32_instr_a8_ldrexh(raw); break; case b0111: result = armv7_read_thumb_32_instr_a8_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_a8_ldr_register_thumb(raw); else if ((op2 & b100100) == b100100 && rn != b1111) result = armv7_read_thumb_32_instr_a8_ldr_immediate_thumb(raw); else if ((op2 & b111100) == b110000 && rn != b1111) result = armv7_read_thumb_32_instr_a8_ldr_immediate_thumb(raw); else if ((op2 & b111100) == b111000 && rn != b1111) result = armv7_read_thumb_32_instr_a8_ldrt(raw); break; case b01: if (rn != b1111) result = armv7_read_thumb_32_instr_a8_ldr_immediate_thumb(raw); break; } if (result == NULL && (op1 & b10) == b00 && rn == b1111) result = armv7_read_thumb_32_instr_a8_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_a8_ldrh_literal(raw); else/* if (rt == b1111)*/ result = armv7_read_thumb_32_instr_a8_pld_literal(raw); } else/* if ((op1 & b10) == b10)*/ { if (rt != b1111) result = armv7_read_thumb_32_instr_a8_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_a8_ldrh_immediate_thumb(raw); else if ((op2 & b111100) == b110000 && rt != b1111) result = armv7_read_thumb_32_instr_a8_ldrh_immediate_thumb(raw); else if (op2 == b000000 && rt != b1111) result = armv7_read_thumb_32_instr_a8_ldrh_register(raw); else if ((op2 & b111100) == b111000) result = armv7_read_thumb_32_instr_a8_ldrht(raw); else if (op2 == b000000 && rt == b1111) result = armv7_read_thumb_32_instr_a8_pld_pldw_register(raw); else if ((op2 & b111100) == b110000 && rt == b1111) result = armv7_read_thumb_32_instr_a8_pld_pldw_immediate(raw); } else if (op1 == b01) { if (rt != b1111) result = armv7_read_thumb_32_instr_a8_ldrh_immediate_thumb(raw); else/* if (rt == b1111)*/ result = armv7_read_thumb_32_instr_a8_pld_pldw_immediate(raw); } else if (op1 == b10) { if ((op2 & b100100) == b100100) result = armv7_read_thumb_32_instr_a8_ldrsh_immediate(raw); else if ((op2 & b111100) == b110000 && rt != b1111) result = armv7_read_thumb_32_instr_a8_ldrsh_immediate(raw); else if (op2 == b000000 && rt != b1111) result = armv7_read_thumb_32_instr_a8_ldrsh_register(raw); else if ((op2 & b111100) == b111000) result = armv7_read_thumb_32_instr_a8_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_a8_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_a8_ldrb_register(raw); else /*if (rt == b1111) */ result = armv7_read_thumb_32_instr_a8_pld_pldw_register(raw); } else if ((op1 & b10) == b00 && rn == b1111) { if (rt != b1111) result = armv7_read_thumb_32_instr_a8_ldrb_literal(raw); else /*if (rt == b1111) */ result = armv7_read_thumb_32_instr_a8_pld_literal(raw); } else if (op1 == b00 && (op2 & b100100) == b100100 && rn != b1111) result = armv7_read_thumb_32_instr_a8_ldrb_immediate_thumb(raw); else if (op1 == b00 && (op2 & b111100) == b110000 && rn != b1111) { if (rt != b1111) result = armv7_read_thumb_32_instr_a8_ldrb_immediate_thumb(raw); else /*if (rt == b1111) */ result = armv7_read_thumb_32_instr_a8_pld_pldw_immediate(raw); } else if (op1 == b00 && (op2 & b111100) == b111000 && rn != b1111) result = armv7_read_thumb_32_instr_a8_ldrbt(raw); else if (op1 == b01 && rn != b1111) { if (rt != b1111) result = armv7_read_thumb_32_instr_a8_ldrb_immediate_thumb(raw); else /*if (rt == b1111) */ result = armv7_read_thumb_32_instr_a8_pld_pldw_immediate(raw); } if (op1 == b10 && op2 == b000000 && rn != b1111) { if (rt != b1111) result = armv7_read_thumb_32_instr_a8_ldrsb_register(raw); else /*if (rt == b1111) */ result = armv7_read_thumb_32_instr_a8_pli_register(raw); } else if ((op1 & b10) == b10 && rn == b1111) { if (rt != b1111) result = armv7_read_thumb_32_instr_a8_ldrsb_literal(raw); else /*if (rt == b1111) */ result = armv7_read_thumb_32_instr_a8_pli_immediate_literal(raw); } else if (op1 == b10 && (op2 & b100100) == b100100 && rn != b1111) result = armv7_read_thumb_32_instr_a8_ldrsb_immediate(raw); else if (op1 == b10 && (op2 & b111100) == b110000 && rn != b1111) { if (rt != b1111) result = armv7_read_thumb_32_instr_a8_ldrsb_immediate(raw); else /*if (rt == b1111) */ result = armv7_read_thumb_32_instr_a8_pli_immediate_literal(raw); } else if (op1 == b10 && (op2 & b111100) == b111000 && rn != b1111) result = armv7_read_thumb_32_instr_a8_ldrsbt(raw); else if (op1 == b11 && rn != b1111) { if (rt != b1111) result = armv7_read_thumb_32_instr_a8_ldrsb_immediate(raw); else /*if (rt == b1111) */ result = armv7_read_thumb_32_instr_a8_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_a8_strb_register(raw); else if ((op2 & b100100) == b100100) result = armv7_read_thumb_32_instr_a8_strb_immediate_thumb(raw); else if ((op2 & b111100) == b110000) result = armv7_read_thumb_32_instr_a8_strb_immediate_thumb(raw); else if ((op2 & b111100) == b111000) result = armv7_read_thumb_32_instr_a8_strbt(raw); break; case b001: if (op2 == b000000) result = armv7_read_thumb_32_instr_a8_strh_register(raw); else if ((op2 & b100100) == b100100) result = armv7_read_thumb_32_instr_a8_strh_immediate_thumb(raw); else if ((op2 & b111100) == b110000) result = armv7_read_thumb_32_instr_a8_strh_immediate_thumb(raw); else if ((op2 & b111100) == b111000) result = armv7_read_thumb_32_instr_a8_strht(raw); break; case b010: if (op2 == b000000) result = armv7_read_thumb_32_instr_a8_str_register(raw); else if ((op2 & b100100) == b100100) result = armv7_read_thumb_32_instr_a8_str_immediate_thumb(raw); else if ((op2 & b111100) == b110000) result = armv7_read_thumb_32_instr_a8_str_immediate_thumb(raw); else if ((op2 & b111100) == b111000) result = armv7_read_thumb_32_instr_a8_strt(raw); break; case b100: result = armv7_read_thumb_32_instr_a8_strb_immediate_thumb(raw); break; case b101: result = armv7_read_thumb_32_instr_a8_strh_immediate_thumb(raw); break; case b110: result = armv7_read_thumb_32_instr_a8_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_a8_tst_register(raw); else result = armv7_read_thumb_32_instr_a8_and_register(raw); break; case b0001: result = armv7_read_thumb_32_instr_a8_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_a8_orr_register(raw); break; case b0011: if (rn == b11111) result = armv7_read_thumb_32_instr_a8_mvn_register(raw); else result = armv7_read_thumb_32_instr_a8_orn_register(raw); break; case b0100: if (rds == b11111) result = armv7_read_thumb_32_instr_a8_teq_register(raw); else result = armv7_read_thumb_32_instr_a8_eor_register(raw); break; case b0110: result = armv7_read_thumb_32_instr_a8_pkh(raw); break; case b1000: if (rds == b11111) result = armv7_read_thumb_32_instr_a8_cmn_register(raw); else result = armv7_read_thumb_32_instr_a8_add_register_thumb(raw); break; case b1010: result = armv7_read_thumb_32_instr_a8_adc_register(raw); break; case b1011: result = armv7_read_thumb_32_instr_a8_sbc_register(raw); break; case b1101: if (rds == b11111) result = armv7_read_thumb_32_instr_a8_cmp_register(raw); else result = armv7_read_thumb_32_instr_a8_sub_register(raw); break; case b1110: result = armv7_read_thumb_32_instr_a8_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_a8_mov_register_thumb(raw); else/* if (imm5 != b00000)*/ result = armv7_read_thumb_32_instr_a8_lsl_immediate(raw); break; case b01: result = armv7_read_thumb_32_instr_a8_lsr_immediate(raw); break; case b10: result = armv7_read_thumb_32_instr_a8_asr_immediate(raw); break; case b11: if (imm5 == b00000) result = armv7_read_thumb_32_instr_a8_rrx(raw); else/* if (imm5 != b00000)*/ result = armv7_read_thumb_32_instr_a8_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_a8_lsl_register(raw); else if ((op1 & b1110) == b0010 && op2 == b0000) result = armv7_read_thumb_32_instr_a8_lsr_register(raw); else if ((op1 & b1110) == b0100 && op2 == b0000) result = armv7_read_thumb_32_instr_a8_asr_register(raw); else if ((op1 & b1110) == b0110 && op2 == b0000) result = armv7_read_thumb_32_instr_a8_ror_register(raw); else if (op1 == b0000 && (op2 & b1000) == b1000) { if (rn == b1111) result = armv7_read_thumb_32_instr_a8_sxth(raw); else result = armv7_read_thumb_32_instr_a8_sxtah(raw); } else if (op1 == b0001 && (op2 & b1000) == b1000) { if (rn == b1111) result = armv7_read_thumb_32_instr_a8_uxth(raw); else result = armv7_read_thumb_32_instr_a8_uxtah(raw); } else if (op1 == b0010 && (op2 & b1000) == b1000) { if (rn == b1111) result = armv7_read_thumb_32_instr_a8_sxtb16(raw); else result = armv7_read_thumb_32_instr_a8_sxtab16(raw); } else if (op1 == b0011 && (op2 & b1000) == b1000) { if (rn == b1111) result = armv7_read_thumb_32_instr_a8_uxtb16(raw); else result = armv7_read_thumb_32_instr_a8_uxtab16(raw); } else if (op1 == b0100 && (op2 & b1000) == b1000) { if (rn == b1111) result = armv7_read_thumb_32_instr_a8_sxtb(raw); else result = armv7_read_thumb_32_instr_a8_sxtab(raw); } else if (op1 == b0101 && (op2 & b1000) == b1000) { if (rn == b1111) result = armv7_read_thumb_32_instr_a8_uxtb(raw); else result = armv7_read_thumb_32_instr_a8_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_a8_sadd16(raw); break; case b010: result = armv7_read_thumb_32_instr_a8_sasx(raw); break; case b110: result = armv7_read_thumb_32_instr_a8_ssax(raw); break; case b101: result = armv7_read_thumb_32_instr_a8_ssub16(raw); break; case b000: result = armv7_read_thumb_32_instr_a8_sadd8(raw); break; case b100: result = armv7_read_thumb_32_instr_a8_ssub8(raw); break; } break; case b01: switch (op1) { case b001: result = armv7_read_thumb_32_instr_a8_qadd16(raw); break; case b010: result = armv7_read_thumb_32_instr_a8_qasx(raw); break; case b110: result = armv7_read_thumb_32_instr_a8_qsax(raw); break; case b101: result = armv7_read_thumb_32_instr_a8_qsub16(raw); break; case b000: result = armv7_read_thumb_32_instr_a8_qadd8(raw); break; case b100: result = armv7_read_thumb_32_instr_a8_qsub8(raw); break; } break; case b10: switch (op1) { case b001: result = armv7_read_thumb_32_instr_a8_shadd16(raw); break; case b010: result = armv7_read_thumb_32_instr_a8_shasx(raw); break; case b110: result = armv7_read_thumb_32_instr_a8_shsax(raw); break; case b101: result = armv7_read_thumb_32_instr_a8_shsub16(raw); break; case b000: result = armv7_read_thumb_32_instr_a8_shadd8(raw); break; case b100: result = armv7_read_thumb_32_instr_a8_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_a8_uadd16(raw); break; case b010: result = armv7_read_thumb_32_instr_a8_uasx(raw); break; case b110: result = armv7_read_thumb_32_instr_a8_usax(raw); break; case b101: result = armv7_read_thumb_32_instr_a8_usub16(raw); break; case b000: result = armv7_read_thumb_32_instr_a8_uadd8(raw); break; case b100: result = armv7_read_thumb_32_instr_a8_usub8(raw); break; } break; case b01: switch (op1) { case b001: result = armv7_read_thumb_32_instr_a8_uqadd16(raw); break; case b010: result = armv7_read_thumb_32_instr_a8_uqasx(raw); break; case b110: result = armv7_read_thumb_32_instr_a8_uqsax(raw); break; case b101: result = armv7_read_thumb_32_instr_a8_uqsub16(raw); break; case b000: result = armv7_read_thumb_32_instr_a8_uqadd8(raw); break; case b100: result = armv7_read_thumb_32_instr_a8_uqsub8(raw); break; } break; case b10: switch (op1) { case b001: result = armv7_read_thumb_32_instr_a8_uhadd16(raw); break; case b010: result = armv7_read_thumb_32_instr_a8_uhasx(raw); break; case b110: result = armv7_read_thumb_32_instr_a8_uhsax(raw); break; case b101: result = armv7_read_thumb_32_instr_a8_uhsub16(raw); break; case b000: result = armv7_read_thumb_32_instr_a8_uhadd8(raw); break; case b100: result = armv7_read_thumb_32_instr_a8_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_a8_qadd(raw); break; case b01: result = armv7_read_thumb_32_instr_a8_qdadd(raw); break; case b10: result = armv7_read_thumb_32_instr_a8_qsub(raw); break; case b11: result = armv7_read_thumb_32_instr_a8_qdsub(raw); break; } break; case b01: switch (op2) { case b00: result = armv7_read_thumb_32_instr_a8_rev(raw); break; case b01: result = armv7_read_thumb_32_instr_a8_rev16(raw); break; case b10: result = armv7_read_thumb_32_instr_a8_rbit(raw); break; case b11: result = armv7_read_thumb_32_instr_a8_revsh(raw); break; } break; case b10: if (op2 == b00) result = armv7_read_thumb_32_instr_a8_sel(raw); break; case b11: if (op2 == b00) result = armv7_read_thumb_32_instr_a8_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_a8_mul(raw); else result = armv7_read_thumb_32_instr_a8_mla(raw); } else if (op2 == b01) result = armv7_read_thumb_32_instr_a8_mls(raw); break; case b001: if (ra == b1111) result = armv7_read_thumb_32_instr_a8_smulbb_smulbt_smultb_smultt(raw); else result = armv7_read_thumb_32_instr_a8_smlabb_smlabt_smlatb_smlatt(raw); break; case b010: if ((op2 & b10) == b00) { if (ra == b1111) result = armv7_read_thumb_32_instr_a8_smuad(raw); else result = armv7_read_thumb_32_instr_a8_smlad(raw); } break; case b011: if ((op2 & b10) == b00) { if (ra == b1111) result = armv7_read_thumb_32_instr_a8_smulwb_smulwt(raw); else result = armv7_read_thumb_32_instr_a8_smlawb_smlawt(raw); } break; case b100: if ((op2 & b10) == b00) { if (ra == b1111) result = armv7_read_thumb_32_instr_a8_smusd(raw); else result = armv7_read_thumb_32_instr_a8_smlsd(raw); } break; case b101: if ((op2 & b10) == b00) { if (ra == b1111) result = armv7_read_thumb_32_instr_a8_smmul(raw); else result = armv7_read_thumb_32_instr_a8_smmla(raw); } break; case b110: if ((op2 & b10) == b00) result = armv7_read_thumb_32_instr_a8_smmls(raw); break; case b111: if (op2 == b00) { if (ra == b1111) result = armv7_read_thumb_32_instr_a8_usad8(raw); else result = armv7_read_thumb_32_instr_a8_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_a8_smull(raw); break; case b001: if (op2 == b1111) result = armv7_read_thumb_32_instr_a8_sdiv(raw); break; case b010: if (op2 == b0000) result = armv7_read_thumb_32_instr_a8_umull(raw); break; case b011: if (op2 == b1111) result = armv7_read_thumb_32_instr_a8_udiv(raw); break; case b100: if (op2 == b0000) result = armv7_read_thumb_32_instr_a8_smlal(raw); else if ((op2 & b1100) == b1000) result = armv7_read_thumb_32_instr_a8_smlalbb_smlalbt_smlaltb_smlaltt(raw); else if ((op2 & b1110) == b1100) result = armv7_read_thumb_32_instr_a8_smlald(raw); break; case b101: if ((op2 & b1110) == b1100) result = armv7_read_thumb_32_instr_a8_smlsld(raw); break; case b110: if (op2 == b0000) result = armv7_read_thumb_32_instr_a8_umlal(raw); else if (op2 == b0110) result = armv7_read_thumb_32_instr_a8_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_thumb_32_advanced_simd_data_processing_instructions(raw); else if ((coproc & b1110) != b1010) { if ((op1 & b100001) == b000000 && (op1 & b111010) != b000000) result = armv7_read_thumb_32_instr_a8_stc_stc2(raw); else if ((op1 & b100001) == b000001 && (op1 & b111010) != b000000) { if (rn != b1111) result = armv7_read_thumb_32_instr_a8_ldc_ldc2_immediate(raw); else/* if (rn == b1111)*/ result = armv7_read_thumb_32_instr_a8_ldc_ldc2_literal(raw); } else if (op1 == b000100) result = armv7_read_thumb_32_instr_a8_mcrr_mcrr2(raw); else if (op1 == b000101) result = armv7_read_thumb_32_instr_a8_mrrc_mrrc2(raw); else if ((op1 & b110000) == b100000 && op == b0) result = armv7_read_thumb_32_instr_a8_cdp_cdp2(raw); else if ((op1 & b110001) == b100000 && op == b1) result = armv7_read_thumb_32_instr_a8_mcr_mcr2(raw); else if ((op1 & b110001) == b100001 && op == b1) result = armv7_read_thumb_32_instr_a8_mrc_mrc2(raw); } else if ((coproc & b1110) == b1010) { if ((op1 & b100000) == b000000 && (op1 & b111010) != b000000) result = process_armv7_thumb_32_extension_register_load_store_instructions(raw); else if ((op1 & b111110) == b000100) result = process_armv7_thumb_32_64_bit_transfers_between_arm_core_and_extension_registers(raw); else if ((op1 & b110000) == b100000) { if (op == b0) result = process_armv7_thumb_32_floating_point_data_processing_instructions(raw); else/* if (op == b1)*/ result = process_armv7_thumb_32_8_16_and_32_bit_transfer_between_arm_core_and_extension_registers(raw); } } return result; } /****************************************************************************** * * * Paramètres : raw = donnée brute de 16 bits à désassembler. * * * * Description : Désassemble une instruction ARMv7 liées au chapitre A7.4. * * * * Retour : Instruction mise en place ou NULL en cas d'échec. * * * * Remarques : - * * * ******************************************************************************/ static GArchInstruction *process_armv7_thumb_32_advanced_simd_data_processing_instructions(uint32_t raw) { GArchInstruction *result; /* Instruction à renvoyer */ uint32_t u; /* Champ 'u' à retrouver */ uint32_t a; /* Champ 'a' à retrouver */ uint32_t b; /* Champ 'b' à retrouver */ uint32_t c; /* Champ 'c' à retrouver */ /** * Suit les directives de : * § A7.4 Advanced SIMD data-processing instructions */ if ((raw & 0xef000000) != 0xef000000) return NULL; result = NULL; u = (raw >> 28) & b1; a = (raw >> 19) & b11111; b = (raw >> 8) & b1111; c = (raw >> 4) & b1111; if ((a & b10000) == b00000) result = process_armv7_thumb_32_three_registers_of_the_same_length(raw); else if ((a & b10111) == b10000 && (c & b1001) == b0001) result = process_armv7_thumb_32_one_register_and_a_modified_immediate_value(raw); else if ((a & b10111) == b10001 && (c & b1001) == b0001) result = process_armv7_thumb_32_two_registers_and_a_shift_amount(raw); else if ((a & b10110) == b10010 && (c & b1001) == b0001) result = process_armv7_thumb_32_two_registers_and_a_shift_amount(raw); else if ((a & b10100) == b10100 && (c & b1001) == b0001) result = process_armv7_thumb_32_two_registers_and_a_shift_amount(raw); else if ((a & b10000) == b10000 && (c & b1001) == b1001) result = process_armv7_thumb_32_two_registers_and_a_shift_amount(raw); else if ((a & b10100) == b10000 && (c & b0101) == b0000) result = process_armv7_thumb_32_three_registers_of_different_lengths(raw); else if ((a & b10110) == b10100 && (c & b0101) == b0000) result = process_armv7_thumb_32_three_registers_of_different_lengths(raw); else if ((a & b10100) == b10000 && (c & b0101) == b0100) result = process_armv7_thumb_32_two_registers_and_a_scalar(raw); else if ((a & b10110) == b10100 && (c & b0101) == b0100) result = process_armv7_thumb_32_two_registers_and_a_scalar(raw); else if (u == b0 && (a & b10110) == b10110 && (c & b0001) == b0000) result = armv7_read_thumb_32_instr_a8_vext(raw); else if (u == b1 && (a & b10110) == b10110) { if ((b & b1000) == b0000 && (c & b0001) == b0000) result = process_armv7_thumb_32_two_registers_miscellaneous(raw); else if ((b & b1100) == b1000 && (c & b0001) == b0000) result = armv7_read_thumb_32_instr_a8_vtbl_vtbx(raw); else if (b == b1100 && (c & b1001) == b0000) result = armv7_read_thumb_32_instr_a8_vdup_scalar(raw); } return result; } /****************************************************************************** * * * Paramètres : raw = donnée brute de 16 bits à désassembler. * * * * Description : Désassemble une instruction ARMv7 liées au chapitre A7.4.1. * * * * Retour : Instruction mise en place ou NULL en cas d'échec. * * * * Remarques : - * * * ******************************************************************************/ static GArchInstruction *process_armv7_thumb_32_three_registers_of_the_same_length(uint32_t raw) { GArchInstruction *result; /* Instruction à renvoyer */ uint32_t u; /* Champ 'u' à retrouver */ uint32_t c; /* Champ 'c' à retrouver */ uint32_t a; /* Champ 'a' à retrouver */ uint32_t b; /* Champ 'b' à retrouver */ /** * Suit les directives de : * § A7.4.1 Three registers of the same length */ if ((raw & 0xef800000) != 0xef000000) return NULL; result = NULL; u = (raw >> 28) & b1; c = (raw >> 20) & b11; a = (raw >> 8) & b1111; b = (raw >> 4) & b1; if (a == b0000) { if (b == b0) result = armv7_read_thumb_32_instr_a8_vhadd_vhsub(raw); else/* if (b == b1)*/ result = armv7_read_thumb_32_instr_a8_vqadd(raw); } else if (a == b0001) { if (b == b0) result = armv7_read_thumb_32_instr_a8_vrhadd(raw); else/* if (b == b1)*/ { if (u == b0) switch (c) { case b00: result = armv7_read_thumb_32_instr_a8_vand_register(raw); break; case b01: result = armv7_read_thumb_32_instr_a8_vbic_register(raw); break; case b10: /* Cf. vmov_register aussi */ result = armv7_read_thumb_32_instr_a8_vorr_register(raw); break; case b11: result = armv7_read_thumb_32_instr_a8_vorn_register(raw); break; } else/* if (u == b1)*/ switch (c) { case b00: result = armv7_read_thumb_32_instr_a8_veor(raw); break; case b01: result = armv7_read_thumb_32_instr_a8_vbif_vbit_vbsl(raw); break; case b10: result = armv7_read_thumb_32_instr_a8_vbif_vbit_vbsl(raw); break; case b11: result = armv7_read_thumb_32_instr_a8_vbif_vbit_vbsl(raw); break; } } } else if (a == b0010) { if (b == b0) result = armv7_read_thumb_32_instr_a8_vhadd_vhsub(raw); else/* if (b == b1)*/ result = armv7_read_thumb_32_instr_a8_vqsub(raw); } else if (a == b0011) { if (b == b0) result = armv7_read_thumb_32_instr_a8_vcgt_register(raw); else/* if (b == b1)*/ result = armv7_read_thumb_32_instr_a8_vcge_register(raw); } else if (a == b0100) { if (b == b0) result = armv7_read_thumb_32_instr_a8_vshl_register(raw); else/* if (b == b1)*/ result = armv7_read_thumb_32_instr_a8_vqshl_register(raw); } else if (a == b0101) { if (b == b0) result = armv7_read_thumb_32_instr_a8_vrshl(raw); else/* if (b == b1)*/ result = armv7_read_thumb_32_instr_a8_vqrshl(raw); } else if (a == b0110) result = armv7_read_thumb_32_instr_a8_vmax_vmin_integer(raw); else if (a == b0111) { if (b == b0) result = armv7_read_thumb_32_instr_a8_vabd_vabdl_integer(raw); else/* if (b == b1)*/ result = armv7_read_thumb_32_instr_a8_vaba_vabal(raw); } else if (a == b1000) { if (b == b0) { if (u == b0) result = armv7_read_thumb_32_instr_a8_vadd_integer(raw); else/* if (u == b1)*/ result = armv7_read_thumb_32_instr_a8_vsub_integer(raw); } else/* if (b == b1)*/ { if (u == b0) result = armv7_read_thumb_32_instr_a8_vtst(raw); else/* if (u == b1)*/ result = armv7_read_thumb_32_instr_a8_vceq_register(raw); } } else if (a == b1001) { if (b == b0) result = armv7_read_thumb_32_instr_a8_vmla_vmlal_vmls_vmlsl_integer(raw); else/* if (b == b1)*/ result = armv7_read_thumb_32_instr_a8_vmul_vmull_integer_and_polynomial(raw); } else if (a == b1010) result = armv7_read_thumb_32_instr_a8_vpmax_vpmin_integer(raw); else if (a == b1011) { if (b == b0) { if (u == b0) result = armv7_read_thumb_32_instr_a8_vqdmulh(raw); else/* if (u == b1)*/ result = armv7_read_thumb_32_instr_a8_vqrdmulh(raw); } else/* if (b == b1)*/ { if (u == b0) result = armv7_read_thumb_32_instr_a8_vpadd_integer(raw); } } else if (a == b1100) { if (b == b1 && u == b0) result = armv7_read_thumb_32_instr_a8_vfma_vfms(raw); } else if (a == b1101) { if (b == b0) { if (u == b0) { if ((c & b10) == b00) result = armv7_read_thumb_32_instr_a8_vadd_floating_point(raw); else/* if ((c & b10) == b10)*/ result = armv7_read_thumb_32_instr_a8_vsub_floating_point(raw); } else/* if (u == b1)*/ { if ((c & b10) == b00) result = armv7_read_thumb_32_instr_a8_vpadd_floating_point(raw); else/* if ((c & b10) == b10)*/ result = armv7_read_thumb_32_instr_a8_vabd_floating_point(raw); } } else/* if (b == b1)*/ { if (u == b0) result = armv7_read_thumb_32_instr_a8_vmla_vmls_floating_point(raw); else/* if (u == b1)*/ { if ((c & b10) == b00) result = armv7_read_thumb_32_instr_a8_vmul_floating_point(raw); } } } else if (a == b1110) { if (b == b0) { if (u == b0) { if ((c & b10) == b00) result = armv7_read_thumb_32_instr_a8_vceq_register(raw); } else/* if (u == b1)*/ { if ((c & b10) == b00) result = armv7_read_thumb_32_instr_a8_vcge_register(raw); else/* if ((c & b10) == b10)*/ result = armv7_read_thumb_32_instr_a8_vcgt_register(raw); } } else/* if (b == b1)*/ { if (u == b1) result = armv7_read_thumb_32_instr_a8_vacge_vacgt_vacle_vaclt(raw); } } else if (a == b1111) { if (b == b0) { if (u == b0) result = armv7_read_thumb_32_instr_a8_vmax_vmin_floating_point(raw); else/* if (u == b1)*/ result = armv7_read_thumb_32_instr_a8_vpmax_vpmin_floating_point(raw); } else/* if (b == b1)*/ { if (u == b0) { if ((c & b10) == b00) result = armv7_read_thumb_32_instr_a8_vrecps(raw); else/* if ((c & b10) == b10)*/ result = armv7_read_thumb_32_instr_a8_vrsqrts(raw); } } } return result; } /****************************************************************************** * * * Paramètres : raw = donnée brute de 16 bits à désassembler. * * * * Description : Désassemble une instruction ARMv7 liées au chapitre A7.4.2. * * * * Retour : Instruction mise en place ou NULL en cas d'échec. * * * * Remarques : - * * * ******************************************************************************/ static GArchInstruction *process_armv7_thumb_32_three_registers_of_different_lengths(uint32_t raw) { GArchInstruction *result; /* Instruction à renvoyer */ uint32_t u; /* Champ 'u' à retrouver */ uint32_t a; /* Champ 'a' à retrouver */ /** * Suit les directives de : * § A7.4.2 Three registers of different lengths */ if ((raw & 0xef800050) != 0xef800000) return NULL; result = NULL; u = (raw >> 28) & b1; a = (raw >> 8) & b1111; if ((a & b1110) == b0000) result = armv7_read_thumb_32_instr_a8_vaddl_vaddw(raw); else if ((a & b1110) == b0010) result = armv7_read_thumb_32_instr_a8_vsubl_vsubw(raw); else if (a == b0100) { if (u == b0) result = armv7_read_thumb_32_instr_a8_vaddhn(raw); else/* if (u == b1)*/ result = armv7_read_thumb_32_instr_a8_vraddhn(raw); } else if (a == b0101) result = armv7_read_thumb_32_instr_a8_vaba_vabal(raw); else if (a == b0110) { if (u == b0) result = armv7_read_thumb_32_instr_a8_vsubhn(raw); else/* if (u == b1)*/ result = armv7_read_thumb_32_instr_a8_vrsubhn(raw); } else if (a == b0111) result = armv7_read_thumb_32_instr_a8_vabd_vabdl_integer(raw); else if ((a & b1101) == b1000) result = armv7_read_thumb_32_instr_a8_vmla_vmlal_vmls_vmlsl_integer(raw); else if ((a & b1101) == b1001) { if (u == b0) result = armv7_read_thumb_32_instr_a8_vqdmlal_vqdmlsl(raw); } else if (a == b1100) result = armv7_read_thumb_32_instr_a8_vmul_vmull_integer_and_polynomial(raw); else if (a == b1101) { if (u == b0) result = armv7_read_thumb_32_instr_a8_vqdmull(raw); } else if (a == b1110) result = armv7_read_thumb_32_instr_a8_vmul_vmull_integer_and_polynomial(raw); return result; } /****************************************************************************** * * * Paramètres : raw = donnée brute de 16 bits à désassembler. * * * * Description : Désassemble une instruction ARMv7 liées au chapitre A7.4.3. * * * * Retour : Instruction mise en place ou NULL en cas d'échec. * * * * Remarques : - * * * ******************************************************************************/ static GArchInstruction *process_armv7_thumb_32_two_registers_and_a_scalar(uint32_t raw) { GArchInstruction *result; /* Instruction à renvoyer */ uint32_t u; /* Champ 'u' à retrouver */ uint32_t a; /* Champ 'a' à retrouver */ /** * Suit les directives de : * § A7.4.3 Two registers and a scalar */ if ((raw & 0xef800050) != 0xef800040) return NULL; result = NULL; u = (raw >> 28) & b1; a = (raw >> 8) & b1111; if ((a & b1010) == b0000) result = armv7_read_thumb_32_instr_a8_vmla_vmlal_vmls_vmlsl_by_scalar(raw); else if ((a & b1010) == b0010) result = armv7_read_thumb_32_instr_a8_vmla_vmlal_vmls_vmlsl_by_scalar(raw); else if ((a & b1011) == b0011 && u == b0) result = armv7_read_thumb_32_instr_a8_vqdmlal_vqdmlsl(raw); else if ((a & b1110) == b1000) result = armv7_read_thumb_32_instr_a8_vmul_vmull_by_scalar(raw); else if (a == b1010) result = armv7_read_thumb_32_instr_a8_vmul_vmull_by_scalar(raw); else if (a == b1011 && u == b0) result = armv7_read_thumb_32_instr_a8_vqdmull(raw); else if (a == b1100) result = armv7_read_thumb_32_instr_a8_vqdmulh(raw); else if (a == b1101) result = armv7_read_thumb_32_instr_a8_vqrdmulh(raw); return result; } /****************************************************************************** * * * Paramètres : raw = donnée brute de 16 bits à désassembler. * * * * Description : Désassemble une instruction ARMv7 liées au chapitre A7.4.4. * * * * Retour : Instruction mise en place ou NULL en cas d'échec. * * * * Remarques : - * * * ******************************************************************************/ static GArchInstruction *process_armv7_thumb_32_two_registers_and_a_shift_amount(uint32_t raw) { GArchInstruction *result; /* Instruction à renvoyer */ uint32_t u; /* Champ 'u' à retrouver */ uint32_t a; /* Champ 'a' à retrouver */ uint32_t l; /* Champ 'l' à retrouver */ uint32_t b; /* Champ 'b' à retrouver */ /** * Suit les directives de : * § A7.4.4 Two registers and a shift amount */ if ((raw & 0xef800010) != 0xef800010) return NULL; result = NULL; u = (raw >> 28) & b1; a = (raw >> 8) & b1111; l = (raw >> 7) & b1; b = (raw >> 6) & b1; if (a == b0000) result = armv7_read_thumb_32_instr_a8_vshr(raw); else if (a == b0001) result = armv7_read_thumb_32_instr_a8_vsra(raw); else if (a == b0010) result = armv7_read_thumb_32_instr_a8_vrshr(raw); else if (a == b0011) result = armv7_read_thumb_32_instr_a8_vrsra(raw); else if (a == b0100 && u == b1) result = armv7_read_thumb_32_instr_a8_vsri(raw); else if (a == b0101) { if (u == b0) result = armv7_read_thumb_32_instr_a8_vshl_immediate(raw); else/* if (u == b1)*/ result = armv7_read_thumb_32_instr_a8_vsli(raw); } else if ((a & b1110) == b0110) result = armv7_read_thumb_32_instr_a8_vqshl_vqshlu_immediate(raw); else if (a == b1000) { if (u == b0) { if (b == b0 && l == b0) result = armv7_read_thumb_32_instr_a8_vshrn(raw); else if (b == b1 && l == b0) result = armv7_read_thumb_32_instr_a8_vrshrn(raw); } else/* if (u == b1)*/ { if (b == b0 && l == b0) result = armv7_read_thumb_32_instr_a8_vqshrn_vqshrun(raw); else if (b == b1 && l == b0) result = armv7_read_thumb_32_instr_a8_vqrshrn_vqrshrun(raw); } } else if (a == b1001) { if (b == b0 && l == b0) result = armv7_read_thumb_32_instr_a8_vqshrn_vqshrun(raw); else if (b == b1 && l == b0) result = armv7_read_thumb_32_instr_a8_vqrshrn_vqrshrun(raw); } else if (a == b1010 && b == b0 && l == b0) { result = armv7_read_thumb_32_instr_a8_vshll(raw); /* ??? */ if (result == NULL) result = armv7_read_thumb_32_instr_a8_vmovl(raw); } else if ((a & b1110) == b1110 && l == b0) result = armv7_read_thumb_32_instr_a8_vcvt_between_floating_point_and_fixed_point_advanced_simd(raw); return result; } /****************************************************************************** * * * Paramètres : raw = donnée brute de 16 bits à désassembler. * * * * Description : Désassemble une instruction ARMv7 liées au chapitre A7.4.5. * * * * Retour : Instruction mise en place ou NULL en cas d'échec. * * * * Remarques : - * * * ******************************************************************************/ static GArchInstruction *process_armv7_thumb_32_two_registers_miscellaneous(uint32_t raw) { GArchInstruction *result; /* Instruction à renvoyer */ uint32_t a; /* Champ 'a' à retrouver */ uint32_t b; /* Champ 'b' à retrouver */ /** * Suit les directives de : * § A7.4.5 Two registers, miscellaneous */ if ((raw & 0xffb00810) != 0xffb00000) return NULL; result = NULL; a = (raw >> 16) & b11; b = (raw >> 6) & b11111; if (a == b00) { if ((b & b11110) == b00000) result = armv7_read_thumb_32_instr_a8_vrev16_vrev32_vrev64(raw); else if ((b & b11110) == b00010) result = armv7_read_thumb_32_instr_a8_vrev16_vrev32_vrev64(raw); else if ((b & b11110) == b00100) result = armv7_read_thumb_32_instr_a8_vrev16_vrev32_vrev64(raw); else if ((b & b11100) == b01000) result = armv7_read_thumb_32_instr_a8_vpaddl(raw); else if ((b & b11110) == b10000) result = armv7_read_thumb_32_instr_a8_vcls(raw); else if ((b & b11110) == b10010) result = armv7_read_thumb_32_instr_a8_vclz(raw); else if ((b & b11110) == b10100) result = armv7_read_thumb_32_instr_a8_vcnt(raw); else if ((b & b11110) == b10110) result = armv7_read_thumb_32_instr_a8_vmvn_register(raw); else if ((b & b11100) == b11000) result = armv7_read_thumb_32_instr_a8_vpadal(raw); else if ((b & b11110) == b11100) result = armv7_read_thumb_32_instr_a8_vqabs(raw); else if ((b & b11110) == b11110) result = armv7_read_thumb_32_instr_a8_vqneg(raw); } else if (a == b01) { if ((b & b01110) == b00000) result = armv7_read_thumb_32_instr_a8_vcgt_immediate_0(raw); else if ((b & b01110) == b00010) result = armv7_read_thumb_32_instr_a8_vcge_immediate_0(raw); else if ((b & b01110) == b00100) result = armv7_read_thumb_32_instr_a8_vceq_immediate_0(raw); else if ((b & b01110) == b00110) result = armv7_read_thumb_32_instr_a8_vcle_immediate_0(raw); else if ((b & b01110) == b01000) result = armv7_read_thumb_32_instr_a8_vclt_immediate_0(raw); else if ((b & b01110) == b01100) result = armv7_read_thumb_32_instr_a8_vabs(raw); else if ((b & b01110) == b01110) result = armv7_read_thumb_32_instr_a8_vneg(raw); } return result; } /****************************************************************************** * * * Paramètres : raw = donnée brute de 16 bits à désassembler. * * * * Description : Désassemble une instruction ARMv7 liées au chapitre A7.4.6. * * * * Retour : Instruction mise en place ou NULL en cas d'échec. * * * * Remarques : - * * * ******************************************************************************/ static GArchInstruction *process_armv7_thumb_32_one_register_and_a_modified_immediate_value(uint32_t raw) { GArchInstruction *result; /* Instruction à renvoyer */ uint32_t cmode; /* Champ 'cmode' à retrouver */ uint32_t op; /* Champ 'op' à retrouver */ /** * Suit les directives de : * § A7.4.6 One register and a modified immediate value */ if ((raw & 0xefb80090) != 0xef800010) return NULL; result = NULL; cmode = (raw >> 8) & b1111; op = (raw >> 5) & b1; if (op == b0) { if ((cmode & b1001) == b0000) result = armv7_read_thumb_32_instr_a8_vmov_immediate(raw); else if ((cmode & b1001) == b0001) result = armv7_read_thumb_32_instr_a8_vorr_immediate(raw); else if ((cmode & b1101) == b1000) result = armv7_read_thumb_32_instr_a8_vmov_immediate(raw); else if ((cmode & b1101) == b1001) result = armv7_read_thumb_32_instr_a8_vorr_immediate(raw); else if ((cmode & b1100) == b1100) result = armv7_read_thumb_32_instr_a8_vmov_immediate(raw); } else/* if (op == b1)*/ { if ((cmode & b1001) == b0000) result = armv7_read_thumb_32_instr_a8_vmvn_immediate(raw); else if ((cmode & b1001) == b0001) result = armv7_read_thumb_32_instr_a8_vbic_immediate(raw); else if ((cmode & b1101) == b1000) result = armv7_read_thumb_32_instr_a8_vmvn_immediate(raw); else if ((cmode & b1101) == b1001) result = armv7_read_thumb_32_instr_a8_vbic_immediate(raw); else if ((cmode & b1110) == b1100) result = armv7_read_thumb_32_instr_a8_vmvn_immediate(raw); else if (cmode == b1110) result = armv7_read_thumb_32_instr_a8_vmov_immediate(raw); else if (cmode == b1111) result = g_undef_instruction_new(IBS_UNDEFINED); } return result; } /****************************************************************************** * * * Paramètres : raw = donnée brute de 16 bits à désassembler. * * * * Description : Désassemble une instruction ARMv7 liées au chapitre A7.5. * * * * Retour : Instruction mise en place ou NULL en cas d'échec. * * * * Remarques : - * * * ******************************************************************************/ static GArchInstruction *process_armv7_thumb_32_floating_point_data_processing_instructions(uint32_t raw) { GArchInstruction *result; /* Instruction à renvoyer */ uint32_t opc1; /* Champ 'opc1' à retrouver */ uint32_t opc2; /* Champ 'opc2' à retrouver */ uint32_t opc3; /* Champ 'opc3' à retrouver */ /** * Suit les directives de : * § A7.5 Floating-point data-processing instructions */ if ((raw & 0xef000e10) != 0x0e000a00) return NULL; result = NULL; opc1 = (raw >> 20) & b1111; opc2 = (raw >> 16) & b1111; opc3 = (raw >> 6) & b11; if ((opc1 & b1011) == b0000) result = armv7_read_thumb_32_instr_a8_vmla_vmls_floating_point(raw); else if ((opc1 & b1011) == b0001) result = armv7_read_thumb_32_instr_a8_vnmla_vnmls_vnmul(raw); else if ((opc1 & b1011) == b0010) { if ((opc3 & b01) == b01) result = armv7_read_thumb_32_instr_a8_vnmla_vnmls_vnmul(raw); else/* if ((opc3 & b01) == b00)*/ result = armv7_read_thumb_32_instr_a8_vmul_floating_point(raw); } else if ((opc1 & b1011) == b0011) { if ((opc3 & b01) == b00) result = armv7_read_thumb_32_instr_a8_vadd_floating_point(raw); else/* if ((opc3 & b01) == b01)*/ result = armv7_read_thumb_32_instr_a8_vsub_floating_point(raw); } else if ((opc1 & b1011) == b1000) { if ((opc3 & b01) == b00) result = armv7_read_thumb_32_instr_a8_vdiv(raw); } else if ((opc1 & b1011) == b1001) result = armv7_read_thumb_32_instr_a8_vfnma_vfnms(raw); else if ((opc1 & b1011) == b1010) result = armv7_read_thumb_32_instr_a8_vfma_vfms(raw); else if ((opc1 & b1011) == b1011) { if ((opc3 & b01) == b00) result = armv7_read_thumb_32_instr_a8_vmov_immediate(raw); else if (opc2 == b0000) { if (opc3 == b01) result = armv7_read_thumb_32_instr_a8_vmov_register(raw); else if (opc3 == b11) result = armv7_read_thumb_32_instr_a8_vabs(raw); } else if (opc2 == b0001) { if (opc3 == b01) result = armv7_read_thumb_32_instr_a8_vneg(raw); else if (opc3 == b11) result = armv7_read_thumb_32_instr_a8_vsqrt(raw); } else if ((opc2 & b1110) == b0010 && (opc3 & b01) == b01) result = armv7_read_thumb_32_instr_a8_vcvtb_vcvtt(raw); else if ((opc2 & b1110) == b0100 && (opc3 & b01) == b01) result = armv7_read_thumb_32_instr_a8_vcmp_vcmpe(raw); else if (opc2 == b0111 && opc3 == b11) result = armv7_read_thumb_32_instr_a8_vcvt_between_double_precision_and_single_precision(raw); else if (opc2 == b1000 && (opc3 & b01) == b01) result = armv7_read_thumb_32_instr_a8_vcvt_vcvtr_between_floating_point_and_integer_floating_point(raw); else if ((opc2 & b1110) == b1010 && (opc3 & b01) == b01) result = armv7_read_thumb_32_instr_a8_vcvt_between_floating_point_and_fixed_point_floating_point(raw); else if ((opc2 & b1110) == b1100 && (opc3 & b01) == b01) result = armv7_read_thumb_32_instr_a8_vcvt_vcvtr_between_floating_point_and_integer_floating_point(raw); else if ((opc2 & b1110) == b1110 && (opc3 & b01) == b01) result = armv7_read_thumb_32_instr_a8_vcvt_between_floating_point_and_fixed_point_floating_point(raw); } return result; } /****************************************************************************** * * * Paramètres : raw = donnée brute de 16 bits à désassembler. * * * * Description : Désassemble une instruction ARMv7 liées au chapitre A7.6. * * * * Retour : Instruction mise en place ou NULL en cas d'échec. * * * * Remarques : - * * * ******************************************************************************/ static GArchInstruction *process_armv7_thumb_32_extension_register_load_store_instructions(uint32_t raw) { GArchInstruction *result; /* Instruction à renvoyer */ uint32_t opcode; /* Champ 'opcode' à retrouver */ uint32_t rn; /* Champ 'rn' à retrouver */ /** * Suit les directives de : * § A7.6 Extension register load/store instructions */ if ((raw & 0xee000e00) != 0xec000a00) return NULL; result = NULL; opcode = (raw >> 20) & b11111; rn = (raw >> 16) & b1111; if ((opcode & b11110) == b00100) result = process_armv7_thumb_32_64_bit_transfers_between_arm_core_and_extension_registers(raw); else if ((opcode & b11011) == b01000) result = armv7_read_thumb_32_instr_a8_vstm(raw); else if ((opcode & b11011) == b01010) result = armv7_read_thumb_32_instr_a8_vstm(raw); else if ((opcode & b10011) == b10000) result = armv7_read_thumb_32_instr_a8_vstr(raw); else if ((opcode & b11011) == b10010) { if (rn != b1101) result = armv7_read_thumb_32_instr_a8_vstm(raw); else/* if (rn == b1101)*/ result = armv7_read_thumb_32_instr_a8_vpush(raw); } else if ((opcode & b11011) == b01001) result = armv7_read_thumb_32_instr_a8_vldm(raw); else if ((opcode & b11011) == b01011) { if (rn != 1101) result = armv7_read_thumb_32_instr_a8_vldm(raw); else/* if (rn == 1101)*/ result = armv7_read_thumb_32_instr_a8_vpop(raw); } else if ((opcode & b10011) == b10001) result = armv7_read_thumb_32_instr_a8_vldr(raw); else if ((opcode & b11011) == b10011) result = armv7_read_thumb_32_instr_a8_vldm(raw); return result; } /****************************************************************************** * * * Paramètres : raw = donnée brute de 16 bits à désassembler. * * * * Description : Désassemble une instruction ARMv7 liées au chapitre A7.7. * * * * Retour : Instruction mise en place ou NULL en cas d'échec. * * * * Remarques : - * * * ******************************************************************************/ static GArchInstruction *process_armv7_thumb_32_advanced_simd_element_or_structure_load_store_instructions(uint32_t raw) { GArchInstruction *result; /* Instruction à renvoyer */ uint32_t a; /* Champ 'a' à retrouver */ uint32_t l; /* Champ 'l' à retrouver */ uint32_t b; /* Champ 'b' à retrouver */ /** * Suit les directives de : * § A7.7 Advanced SIMD element or structure load/store instructions */ if ((raw & 0xff100000) != 0xf9000000) return NULL; result = NULL; a = (raw >> 23) & b1; l = (raw >> 21) & b1; b = (raw >> 8) & b1111; if (l == b0) { if (a == b0) { if (b == b0010) result = armv7_read_thumb_32_instr_a8_vst1_multiple_single_elements(raw); else if ((b & b1110) == b0110) result = armv7_read_thumb_32_instr_a8_vst1_multiple_single_elements(raw); else if (b == b1010) result = armv7_read_thumb_32_instr_a8_vst1_multiple_single_elements(raw); else if (b == b0011) result = armv7_read_thumb_32_instr_a8_vst2_multiple_2_element_structures(raw); else if ((b & b1110) == b1000) result = armv7_read_thumb_32_instr_a8_vst2_multiple_2_element_structures(raw); else if ((b & b1110) == b0100) result = armv7_read_thumb_32_instr_a8_vst3_multiple_3_element_structures(raw); else if ((b & b1110) == b0000) result = armv7_read_thumb_32_instr_a8_vst4_multiple_4_element_structures(raw); } else/* if (a == b1)*/ { if ((b & b1011) == b0000) result = armv7_read_thumb_32_instr_a8_vst1_single_element_from_one_lane(raw); else if (b == b1000) result = armv7_read_thumb_32_instr_a8_vst1_single_element_from_one_lane(raw); else if ((b & b1011) == b0001) result = armv7_read_thumb_32_instr_a8_vst2_single_2_element_structure_from_one_lane(raw); else if (b == b1001) result = armv7_read_thumb_32_instr_a8_vst2_single_2_element_structure_from_one_lane(raw); else if ((b & b1011) == b0010) result = armv7_read_thumb_32_instr_a8_vst3_single_3_element_structure_from_one_lane(raw); else if (b == b1010) result = armv7_read_thumb_32_instr_a8_vst3_single_3_element_structure_from_one_lane(raw); else if ((b & b1011) == b0011) result = armv7_read_thumb_32_instr_a8_vst4_single_4_element_structure_from_one_lane(raw); else if (b == b1011) result = armv7_read_thumb_32_instr_a8_vst4_single_4_element_structure_from_one_lane(raw); } } else/* if (l == b1)*/ { if (a == b0) { if (b == b0010) result = armv7_read_thumb_32_instr_a8_vld1_multiple_single_elements(raw); else if ((b & b1110) == b0110) result = armv7_read_thumb_32_instr_a8_vld1_multiple_single_elements(raw); else if (b == b1010) result = armv7_read_thumb_32_instr_a8_vld1_multiple_single_elements(raw); else if (b == b0011) result = armv7_read_thumb_32_instr_a8_vld2_multiple_2_element_structures(raw); else if ((b & b1110) == b1000) result = armv7_read_thumb_32_instr_a8_vld2_multiple_2_element_structures(raw); else if ((b & b1110) == b0100) result = armv7_read_thumb_32_instr_a8_vld3_multiple_3_element_structures(raw); else if ((b & b1110) == b0000) result = armv7_read_thumb_32_instr_a8_vld4_multiple_4_element_structures(raw); } else/* if (a == b1)*/ { if ((b & b1011) == b0000) result = armv7_read_thumb_32_instr_a8_vld1_single_element_to_one_lane(raw); else if (b == b1000) result = armv7_read_thumb_32_instr_a8_vld1_single_element_to_one_lane(raw); else if (b == b1100) result = armv7_read_thumb_32_instr_a8_vld1_single_element_to_all_lanes(raw); else if ((b & b1011) == b0001) result = armv7_read_thumb_32_instr_a8_vld2_single_2_element_structure_to_one_lane(raw); else if (b == b1001) result = armv7_read_thumb_32_instr_a8_vld2_single_2_element_structure_to_one_lane(raw); else if (b == b1101) result = armv7_read_thumb_32_instr_a8_vld2_single_2_element_structure_to_all_lanes(raw); else if ((b & b1011) == b0010) result = armv7_read_thumb_32_instr_a8_vld3_single_3_element_structure_to_one_lane(raw); else if (b == b1010) result = armv7_read_thumb_32_instr_a8_vld3_single_3_element_structure_to_one_lane(raw); else if (b == b1110) result = armv7_read_thumb_32_instr_a8_vld3_single_3_element_structure_to_all_lanes(raw); else if ((b & b1011) == b0011) result = armv7_read_thumb_32_instr_a8_vld4_single_4_element_structure_to_one_lane(raw); else if (b == b1011) result = armv7_read_thumb_32_instr_a8_vld4_single_4_element_structure_to_one_lane(raw); else if (b == b1111) result = armv7_read_thumb_32_instr_a8_vld4_single_4_element_structure_to_all_lanes(raw); } } return result; } /****************************************************************************** * * * Paramètres : raw = donnée brute de 16 bits à désassembler. * * * * Description : Désassemble une instruction ARMv7 liées au chapitre A7.8. * * * * Retour : Instruction mise en place ou NULL en cas d'échec. * * * * Remarques : - * * * ******************************************************************************/ static GArchInstruction *process_armv7_thumb_32_8_16_and_32_bit_transfer_between_arm_core_and_extension_registers(uint32_t raw) { GArchInstruction *result; /* Instruction à renvoyer */ uint32_t a; /* Champ 'a' à retrouver */ uint32_t l; /* Champ 'l' à retrouver */ uint32_t c; /* Champ 'c' à retrouver */ uint32_t b; /* Champ 'b' à retrouver */ /** * Suit les directives de : * § A7.8 8, 16, and 32-bit transfer between ARM core and extension registers */ if ((raw & 0xef000e10) != 0xee000a10) return NULL; result = NULL; a = (raw >> 21) & b111; l = (raw >> 20) & b1; c = (raw >> 8) & b1; b = (raw >> 5) & b11; if (l == b0) { if (c == b0) { if (a == b000) result = armv7_read_thumb_32_instr_a8_vmov_between_arm_core_register_and_single_precision_register(raw); else if (a == b111) { result = armv7_read_thumb_32_instr_a8_vmsr(raw); /* B9 ? */ if (result == NULL /* ! */) result = armv7_read_thumb_32_instr_b9_vmsr(raw); } } else/* if (c == b1)*/ { if ((a & b100) == b000) result = armv7_read_thumb_32_instr_a8_vmov_arm_core_register_to_scalar(raw); else if (/*(a & b100) == b000) && */(b & b10) == b00) result = armv7_read_thumb_32_instr_a8_vdup_arm_core_register(raw); } } else/* if (l == b1)*/ { if (c == b0) { if (a == b000) result = armv7_read_thumb_32_instr_a8_vmov_between_arm_core_register_and_single_precision_register(raw); else if (a == b111) { result = armv7_read_thumb_32_instr_a8_vmrs(raw); /* B9 ? */ if (result == NULL /* ! */) result = armv7_read_thumb_32_instr_b9_vmrs(raw); } } else/* if (c == b1)*/ result = armv7_read_thumb_32_instr_a8_vmov_scalar_to_arm_core_register(raw); } return result; } /****************************************************************************** * * * Paramètres : raw = donnée brute de 16 bits à désassembler. * * * * Description : Désassemble une instruction ARMv7 liées au chapitre A7.9. * * * * Retour : Instruction mise en place ou NULL en cas d'échec. * * * * Remarques : - * * * ******************************************************************************/ static GArchInstruction *process_armv7_thumb_32_64_bit_transfers_between_arm_core_and_extension_registers(uint32_t raw) { GArchInstruction *result; /* Instruction à renvoyer */ uint32_t c; /* Champ 'c' à retrouver */ uint32_t op; /* Champ 'op' à retrouver */ /** * Suit les directives de : * § A7.9 64-bit transfers between ARM core and extension registers */ if ((raw & 0xefe00e00) != 0xec400a00) return NULL; result = NULL; c = (raw >> 8) & b1; op = (raw >> 4) & b1111; if (c == b0 && (op & b1101) == 0001) result = armv7_read_thumb_32_instr_a8_vmov_between_two_arm_core_registers_and_two_single_precision_registers(raw); else if (c == b1 && (op & b1101) == 0001) result = armv7_read_thumb_32_instr_a8_vmov_between_two_arm_core_registers_and_a_doubleword_extension_register(raw); return result; }