From dd8a57cb807be3ce8084d7fd3fd05336f84c4931 Mon Sep 17 00:00:00 2001 From: bunnei Date: Fri, 2 Jan 2015 14:21:03 -0500 Subject: dyncom: Implemented LDREXD/STREXD/LDREXH/STREXH --- src/core/arm/dyncom/arm_dyncom_dec.cpp | 11 +- src/core/arm/dyncom/arm_dyncom_dec.h | 216 ++++++++----------- src/core/arm/dyncom/arm_dyncom_interpreter.cpp | 282 ++++++++++++++++--------- 3 files changed, 282 insertions(+), 227 deletions(-) (limited to 'src') diff --git a/src/core/arm/dyncom/arm_dyncom_dec.cpp b/src/core/arm/dyncom/arm_dyncom_dec.cpp index 333b40f5..0927eece 100644 --- a/src/core/arm/dyncom/arm_dyncom_dec.cpp +++ b/src/core/arm/dyncom/arm_dyncom_dec.cpp @@ -136,7 +136,6 @@ const ISEITEM arm_instruction[] = { { "pkhbt", 2, 6, 20, 27, 0x00000068, 4, 6, 0x00000001 }, { "smul", 3, 4, 20, 27, 0x00000016, 7, 7, 0x00000001, 4, 4, 0x00000000 }, { "smlalxy", 3, 4, 20, 27, 0x00000014, 7, 7, 0x00000001, 4, 4, 0x00000000 }, - // {"smlal" , 2 , 4 , 21, 27, 0x00000007, 4, 7, 0x00000009}, { "smla", 3, 4, 20, 27, 0x00000010, 7, 7, 0x00000001, 4, 4, 0x00000000 }, { "mcrr", 1, 6, 20, 27, 0x000000c4 }, { "mrrc", 1, 6, 20, 27, 0x000000c5 }, @@ -194,6 +193,10 @@ const ISEITEM arm_instruction[] = { { "ldc", 2, 0, 25, 27, 0x00000006, 20, 20, 0x00000001 }, { "swi", 1, 0, 24, 27, 0x0000000f }, { "bbl", 1, 0, 25, 27, 0x00000005 }, + { "ldrexd", 2, ARMV6K, 20, 27, 0x0000001B, 4, 7, 0x00000009 }, + { "strexd", 2, ARMV6K, 20, 27, 0x0000001A, 4, 7, 0x00000009 }, + { "ldrexh", 2, ARMV6K, 20, 27, 0x0000001F, 4, 7, 0x00000009 }, + { "strexh", 2, ARMV6K, 20, 27, 0x0000001E, 4, 7, 0x00000009 }, }; const ISEITEM arm_exclusion_code[] = { @@ -383,6 +386,11 @@ const ISEITEM arm_exclusion_code[] = { { "ldc", 0, 0, 0 }, { "swi", 0, 0, 0 }, { "bbl", 0, 0, 0 }, + { "ldrexd", 0, ARMV6K, 0 }, + { "strexd", 0, ARMV6K, 0 }, + { "ldrexh", 0, ARMV6K, 0 }, + { "strexh", 0, ARMV6K, 0 }, + { "bl_1_thumb", 0, INVALID, 0 }, // Should be table[-4] { "bl_2_thumb", 0, INVALID, 0 }, // Should be located at the end of the table[-3] { "blx_1_thumb", 0, INVALID, 0 }, // Should be located at table[-2] @@ -395,6 +403,7 @@ int decode_arm_instr(uint32_t instr, int32_t *idx) { int ret = DECODE_FAILURE; int i = 0; int instr_slots = sizeof(arm_instruction) / sizeof(ISEITEM); + for (i = 0; i < instr_slots; i++) { n = arm_instruction[i].attribute_value; base = 0; diff --git a/src/core/arm/dyncom/arm_dyncom_dec.h b/src/core/arm/dyncom/arm_dyncom_dec.h index 70eb96e9..58784aee 100644 --- a/src/core/arm/dyncom/arm_dyncom_dec.h +++ b/src/core/arm/dyncom/arm_dyncom_dec.h @@ -1,153 +1,117 @@ -/* Copyright (C) -* 2012 - Michael.Kang blackfin.kang@gmail.com -* This program 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 2 -* of the License, or (at your option) any later version. -* -* This program is distributed in the hope that it will be useful, -* but WITHOUT ANY WARRANTY; without even the implied warranty of -* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -* GNU General Public License for more details. -* -* You should have received a copy of the GNU General Public License -* along with this program; if not, write to the Free Software -* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. -* -*/ - -/** -* @file arm_dyncom_dec.h -* @brief Some common utility for arm instruction decoder -* @author Michael.Kang blackfin.kang@gmail.com -* @version 7849 -* @date 2012-03-15 -*/ - -#ifndef __ARM_DYNCOM_DEC__ -#define __ARM_DYNCOM_DEC__ - -#define BITS(a,b) ((instr >> (a)) & ((1 << (1+(b)-(a)))-1)) -#define BIT(n) ((instr >> (n)) & 1) -#define BAD do{printf("meet BAD at %s, instr is %x\n", __FUNCTION__, instr ); /*exit(0);*/}while(0); -#define ptr_N cpu->ptr_N -#define ptr_Z cpu->ptr_Z -#define ptr_C cpu->ptr_C -#define ptr_V cpu->ptr_V -#define ptr_I cpu->ptr_I -#define ptr_T cpu->ptr_T -#define ptr_CPSR cpu->ptr_gpr[16] - -/* for MUL instructions */ -/*xxxx xxxx xxxx 1111 xxxx xxxx xxxx xxxx */ -#define RDHi ((instr >> 16) & 0xF) -/*xxxx xxxx xxxx xxxx 1111 xxxx xxxx xxxx */ -#define RDLo ((instr >> 12) & 0xF) -/*xxxx xxxx xxxx 1111 xxxx xxxx xxxx xxxx */ -#define MUL_RD ((instr >> 16) & 0xF) -/*xxxx xxxx xxxx xxxx 1111 xxxx xxxx xxxx */ -#define MUL_RN ((instr >> 12) & 0xF) -/*xxxx xxxx xxxx xxxx xxxx 1111 xxxx xxxx */ -#define RS ((instr >> 8) & 0xF) - -/*xxxx xxxx xxxx xxxx 1111 xxxx xxxx xxxx */ -#define RD ((instr >> 12) & 0xF) -/*xxxx xxxx xxxx 1111 xxxx xxxx xxxx xxxx */ -#define RN ((instr >> 16) & 0xF) -/*xxxx xxxx xxxx xxxx xxxx xxxx xxxx 1111 */ -#define RM (instr & 0xF) - -/* CP15 registers */ -#define OPCODE_1 BITS(21, 23) -#define CRn BITS(16, 19) -#define CRm BITS(0, 3) -#define OPCODE_2 BITS(5, 7) - -/*xxxx xx1x xxxx xxxx xxxx xxxx xxxx xxxx */ -#define I BIT(25) -/*xxxx xxxx xxx1 xxxx xxxx xxxx xxxx xxxx */ -#define S BIT(20) - -#define SHIFT BITS(5,6) -#define SHIFT_IMM BITS(7,11) -#define IMMH BITS(8,11) -#define IMML BITS(0,3) - -#define LSPBIT BIT(24) -#define LSUBIT BIT(23) -#define LSBBIT BIT(22) -#define LSWBIT BIT(21) -#define LSLBIT BIT(20) -#define LSSHBITS BITS(5,6) -#define OFFSET12 BITS(0,11) -#define SBIT BIT(20) -#define DESTReg (BITS (12, 15)) - -/* they are in unused state, give a corrent value when using */ +// Copyright 2012 Michael Kang, 2015 Citra Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#define BITS(a,b) ((instr >> (a)) & ((1 << (1+(b)-(a)))-1)) +#define BIT(n) ((instr >> (n)) & 1) +#define BAD do { printf("meet BAD at %s, instr is %x\n", __FUNCTION__, instr ); } while(0); +#define ptr_N cpu->ptr_N +#define ptr_Z cpu->ptr_Z +#define ptr_C cpu->ptr_C +#define ptr_V cpu->ptr_V +#define ptr_I cpu->ptr_I +#define ptr_T cpu->ptr_T +#define ptr_CPSR cpu->ptr_gpr[16] + +// For MUL instructions +#define RDHi ((instr >> 16) & 0xF) +#define RDLo ((instr >> 12) & 0xF) +#define MUL_RD ((instr >> 16) & 0xF) +#define MUL_RN ((instr >> 12) & 0xF) +#define RS ((instr >> 8) & 0xF) +#define RD ((instr >> 12) & 0xF) +#define RN ((instr >> 16) & 0xF) +#define RM (instr & 0xF) + +// CP15 registers +#define OPCODE_1 BITS(21, 23) +#define CRn BITS(16, 19) +#define CRm BITS(0, 3) +#define OPCODE_2 BITS(5, 7) + +#define I BIT(25) +#define S BIT(20) + +#define SHIFT BITS(5,6) +#define SHIFT_IMM BITS(7,11) +#define IMMH BITS(8,11) +#define IMML BITS(0,3) + +#define LSPBIT BIT(24) +#define LSUBIT BIT(23) +#define LSBBIT BIT(22) +#define LSWBIT BIT(21) +#define LSLBIT BIT(20) +#define LSSHBITS BITS(5,6) +#define OFFSET12 BITS(0,11) +#define SBIT BIT(20) +#define DESTReg (BITS (12, 15)) + +// They are in unused state, give a corrent value when using #define IS_V5E 0 #define IS_V5 0 #define IS_V6 0 #define LHSReg 0 -/* temp define the using the pc reg need implement a flow */ -#define STORE_CHECK_RD_PC ADD(R(RD), CONST(INSTR_SIZE * 2)) +// Temp define the using the pc reg need implement a flow +#define STORE_CHECK_RD_PC ADD(R(RD), CONST(INSTR_SIZE * 2)) -#define OPERAND operand(cpu,instr,bb,NULL) -#define SCO_OPERAND(sco) operand(cpu,instr,bb,sco) -#define BOPERAND boperand(instr) +#define OPERAND operand(cpu,instr,bb,NULL) +#define SCO_OPERAND(sco) operand(cpu,instr,bb,sco) +#define BOPERAND boperand(instr) -#define CHECK_RN_PC (RN==15? ADD(AND(R(RN), CONST(~0x1)), CONST(INSTR_SIZE * 2)):R(RN)) -#define CHECK_RN_PC_WA (RN==15? ADD(AND(R(RN), CONST(~0x3)), CONST(INSTR_SIZE * 2)):R(RN)) +#define CHECK_RN_PC (RN == 15 ? ADD(AND(R(RN), CONST(~0x1)), CONST(INSTR_SIZE * 2)) : R(RN)) +#define CHECK_RN_PC_WA (RN == 15 ? ADD(AND(R(RN), CONST(~0x3)), CONST(INSTR_SIZE * 2)) : R(RN)) -#define GET_USER_MODE() (OR(ICMP_EQ(R(MODE_REG), CONST(USER32MODE)), ICMP_EQ(R(MODE_REG), CONST(SYSTEM32MODE)))) +#define GET_USER_MODE() (OR(ICMP_EQ(R(MODE_REG), CONST(USER32MODE)), ICMP_EQ(R(MODE_REG), CONST(SYSTEM32MODE)))) int decode_arm_instr(uint32_t instr, int32_t *idx); enum DECODE_STATUS { - DECODE_SUCCESS, - DECODE_FAILURE + DECODE_SUCCESS, + DECODE_FAILURE }; struct instruction_set_encoding_item { - const char *name; - int attribute_value; - int version; - u32 content[21]; + const char *name; + int attribute_value; + int version; + u32 content[21]; }; typedef struct instruction_set_encoding_item ISEITEM; -#define RECORD_WB(value, flag) {cpu->dyncom_engine->wb_value = value;cpu->dyncom_engine->wb_flag = flag;} +#define RECORD_WB(value, flag) { cpu->dyncom_engine->wb_value = value;cpu->dyncom_engine->wb_flag = flag; } #define INIT_WB(wb_value, wb_flag) RECORD_WB(wb_value, wb_flag) -#define EXECUTE_WB(base_reg) {if(cpu->dyncom_engine->wb_flag) \ - LET(base_reg, cpu->dyncom_engine->wb_value);} -inline int get_reg_count(uint32_t instr){ - int i = BITS(0,15); - int count = 0; - while(i){ - if(i & 1) - count ++; - i = i >> 1; - } - return count; +#define EXECUTE_WB(base_reg) { if(cpu->dyncom_engine->wb_flag) LET(base_reg, cpu->dyncom_engine->wb_value); } + +inline int get_reg_count(uint32_t instr) { + int i = BITS(0, 15); + int count = 0; + while (i) { + if (i & 1) + count++; + i = i >> 1; + } + return count; } enum ARMVER { - INVALID = 0, - ARMALL, - ARMV4, - ARMV4T, - ARMV5T, - ARMV5TE, - ARMV5TEJ, - ARMV6, - ARM1176JZF_S, - ARMVFP2, - ARMVFP3 + INVALID = 0, + ARMALL, + ARMV4, + ARMV4T, + ARMV5T, + ARMV5TE, + ARMV5TEJ, + ARMV6, + ARM1176JZF_S, + ARMVFP2, + ARMVFP3, + ARMV6K, }; -//extern const INSTRACT arm_instruction_action[]; extern const ISEITEM arm_instruction[]; - -#endif diff --git a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp index bc55a082..5f09d858 100644 --- a/src/core/arm/dyncom/arm_dyncom_interpreter.cpp +++ b/src/core/arm/dyncom/arm_dyncom_interpreter.cpp @@ -622,9 +622,7 @@ void LdnStM(DecrementAfter)(arm_processor *cpu, unsigned int inst, unsigned int } unsigned int rn = CHECK_READ_REG15_WA(cpu, Rn); unsigned int start_addr = rn - count * 4 + 4; - unsigned int end_addr = rn; - virt_addr = end_addr; virt_addr = start_addr; if (CondPassed(cpu, BITS(inst, 28, 31)) && BIT(inst, 21)) { @@ -1104,10 +1102,10 @@ typedef struct _blx_1_thumb { }blx_1_thumb; typedef struct _pkh_inst { - u32 Rm; - u32 Rn; - u32 Rd; - u8 imm; + unsigned int Rm; + unsigned int Rn; + unsigned int Rd; + unsigned char imm; } pkh_inst; typedef arm_inst * ARM_INST_PTR; @@ -1740,40 +1738,31 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(ldrd)(unsigned int inst, int index) return inst_base; } - ARM_INST_PTR INTERPRETER_TRANSLATE(ldrex)(unsigned int inst, int index) { - arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(ldst_inst)); - ldst_inst *inst_cream = (ldst_inst *)inst_base->component; + arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(generic_arm_inst)); + generic_arm_inst *inst_cream = (generic_arm_inst *)inst_base->component; inst_base->cond = BITS(inst, 28, 31); - inst_base->idx = index; - inst_base->br = NON_BRANCH; + inst_base->idx = index; + inst_base->br = (BITS(inst, 12, 15) == 15) ? INDIRECT_BRANCH : NON_BRANCH; // Branch if dest is R15 - inst_cream->inst = inst; - //inst_cream->get_addr = get_calc_addr_op(inst); + inst_cream->Rn = BITS(inst, 16, 19); + inst_cream->Rd = BITS(inst, 12, 15); - if (BITS(inst, 12, 15) == 15) { - inst_base->br = INDIRECT_BRANCH; - } return inst_base; } ARM_INST_PTR INTERPRETER_TRANSLATE(ldrexb)(unsigned int inst, int index) { - arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(ldst_inst)); - ldst_inst *inst_cream = (ldst_inst *)inst_base->component; - - inst_base->cond = BITS(inst, 28, 31); - inst_base->idx = index; - inst_base->br = NON_BRANCH; - - inst_cream->inst = inst; - inst_cream->get_addr = get_calc_addr_op(inst); - - if (BITS(inst, 12, 15) == 15) { - inst_base->br = INDIRECT_BRANCH; - } - return inst_base; + return INTERPRETER_TRANSLATE(ldrex)(inst, index); +} +ARM_INST_PTR INTERPRETER_TRANSLATE(ldrexh)(unsigned int inst, int index) +{ + return INTERPRETER_TRANSLATE(ldrex)(inst, index); +} +ARM_INST_PTR INTERPRETER_TRANSLATE(ldrexd)(unsigned int inst, int index) +{ + return INTERPRETER_TRANSLATE(ldrex)(inst, index); } ARM_INST_PTR INTERPRETER_TRANSLATE(ldrh)(unsigned int inst, int index) { @@ -2623,37 +2612,30 @@ ARM_INST_PTR INTERPRETER_TRANSLATE(strd)(unsigned int inst, int index){ } ARM_INST_PTR INTERPRETER_TRANSLATE(strex)(unsigned int inst, int index) { - arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(ldst_inst)); - ldst_inst *inst_cream = (ldst_inst *)inst_base->component; + arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(generic_arm_inst)); + generic_arm_inst *inst_cream = (generic_arm_inst *)inst_base->component; inst_base->cond = BITS(inst, 28, 31); - inst_base->idx = index; - inst_base->br = NON_BRANCH; + inst_base->idx = index; + inst_base->br = NON_BRANCH; - inst_cream->inst = inst; - inst_cream->get_addr = get_calc_addr_op(inst); + inst_cream->Rn = BITS(inst, 16, 19); + inst_cream->Rd = BITS(inst, 12, 15); + inst_cream->Rm = BITS(inst, 0, 3); - if (BITS(inst, 12, 15) == 15) { - inst_base->br = INDIRECT_BRANCH; - } return inst_base; } ARM_INST_PTR INTERPRETER_TRANSLATE(strexb)(unsigned int inst, int index) { - arm_inst *inst_base = (arm_inst *)AllocBuffer(sizeof(arm_inst) + sizeof(ldst_inst)); - ldst_inst *inst_cream = (ldst_inst *)inst_base->component; - - inst_base->cond = BITS(inst, 28, 31); - inst_base->idx = index; - inst_base->br = NON_BRANCH; - - inst_cream->inst = inst; - inst_cream->get_addr = get_calc_addr_op(inst); - - if (BITS(inst, 12, 15) == 15) { - inst_base->br = INDIRECT_BRANCH; - } - return inst_base; + return INTERPRETER_TRANSLATE(strex)(inst, index); +} +ARM_INST_PTR INTERPRETER_TRANSLATE(strexh)(unsigned int inst, int index) +{ + return INTERPRETER_TRANSLATE(strex)(inst, index); +} +ARM_INST_PTR INTERPRETER_TRANSLATE(strexd)(unsigned int inst, int index) +{ + return INTERPRETER_TRANSLATE(strex)(inst, index); } ARM_INST_PTR INTERPRETER_TRANSLATE(strh)(unsigned int inst, int index) { @@ -3355,6 +3337,11 @@ const transop_fp_t arm_instruction_trans[] = { INTERPRETER_TRANSLATE(ldc), INTERPRETER_TRANSLATE(swi), INTERPRETER_TRANSLATE(bbl), + INTERPRETER_TRANSLATE(ldrexd), + INTERPRETER_TRANSLATE(strexd), + INTERPRETER_TRANSLATE(ldrexh), + INTERPRETER_TRANSLATE(strexh), + // All the thumb instructions should be placed the end of table INTERPRETER_TRANSLATE(b_2_thumb), INTERPRETER_TRANSLATE(b_cond_thumb), @@ -3551,6 +3538,7 @@ unsigned InterpreterMainLoop(ARMul_State* state) { #define CRm inst_cream->crm #define CP15_REG(n) cpu->CP15[CP15(n)] #define RD cpu->Reg[inst_cream->Rd] + #define RD2 cpu->Reg[inst_cream->Rd + 1] #define RN cpu->Reg[inst_cream->Rn] #define RM cpu->Reg[inst_cream->Rm] #define RS cpu->Reg[inst_cream->Rs] @@ -3762,14 +3750,18 @@ unsigned InterpreterMainLoop(ARMul_State* state) { case 182: goto LDC_INST; \ case 183: goto SWI_INST; \ case 184: goto BBL_INST; \ - case 185: goto B_2_THUMB ; \ - case 186: goto B_COND_THUMB ; \ - case 187: goto BL_1_THUMB ; \ - case 188: goto BL_2_THUMB ; \ - case 189: goto BLX_1_THUMB ; \ - case 190: goto DISPATCH; \ - case 191: goto INIT_INST_LENGTH; \ - case 192: goto END; \ + case 185: goto LDREXD_INST; \ + case 186: goto STREXD_INST; \ + case 187: goto LDREXH_INST; \ + case 188: goto STREXH_INST; \ + case 189: goto B_2_THUMB ; \ + case 190: goto B_COND_THUMB ; \ + case 191: goto BL_1_THUMB ; \ + case 192: goto BL_2_THUMB ; \ + case 193: goto BLX_1_THUMB ; \ + case 194: goto DISPATCH; \ + case 195: goto INIT_INST_LENGTH; \ + case 196: goto END; \ } #endif @@ -3830,8 +3822,9 @@ unsigned InterpreterMainLoop(ARMul_State* state) { &&MLA_INST,&&SSAT_INST,&&USAT_INST,&&MRS_INST,&&MSR_INST,&&AND_INST,&&BIC_INST,&&LDM_INST,&&EOR_INST,&&ADD_INST,&&RSB_INST,&&RSC_INST, &&SBC_INST,&&ADC_INST,&&SUB_INST,&&ORR_INST,&&MVN_INST,&&MOV_INST,&&STM_INST,&&LDM_INST,&&LDRSH_INST,&&STM_INST,&&LDM_INST,&&LDRSB_INST, &&STRD_INST,&&LDRH_INST,&&STRH_INST,&&LDRD_INST,&&STRT_INST,&&STRBT_INST,&&LDRBT_INST,&&LDRT_INST,&&MRC_INST,&&MCR_INST,&&MSR_INST, - &&LDRB_INST,&&STRB_INST,&&LDR_INST,&&LDRCOND_INST, &&STR_INST,&&CDP_INST,&&STC_INST,&&LDC_INST,&&SWI_INST,&&BBL_INST,&&B_2_THUMB, &&B_COND_THUMB, - &&BL_1_THUMB, &&BL_2_THUMB, &&BLX_1_THUMB, &&DISPATCH,&&INIT_INST_LENGTH,&&END + &&LDRB_INST,&&STRB_INST,&&LDR_INST,&&LDRCOND_INST, &&STR_INST,&&CDP_INST,&&STC_INST,&&LDC_INST,&&SWI_INST,&&BBL_INST,&&LDREXD_INST, + &&STREXD_INST,&&LDREXH_INST,&&STREXH_INST,&&B_2_THUMB, &&B_COND_THUMB,&&BL_1_THUMB, &&BL_2_THUMB, &&BLX_1_THUMB, &&DISPATCH, + &&INIT_INST_LENGTH,&&END }; #endif arm_inst * inst_base; @@ -4432,45 +4425,84 @@ unsigned InterpreterMainLoop(ARMul_State* state) { LDREX_INST: { - ldst_inst *inst_cream = (ldst_inst *)inst_base->component; + generic_arm_inst* inst_cream = (generic_arm_inst*)inst_base->component; if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) { - addr = cpu->Reg[BITS(inst_cream->inst, 16, 19)]; + unsigned int read_addr = RN; - unsigned int value = Memory::Read32(addr); - - add_exclusive_addr(cpu, addr); + add_exclusive_addr(cpu, read_addr); cpu->exclusive_state = 1; - cpu->Reg[BITS(inst_cream->inst, 12, 15)] = value; - if (BITS(inst_cream->inst, 12, 15) == 15) { - INC_PC(sizeof(ldst_inst)); + RD = Memory::Read32(read_addr); + if (inst_cream->Rd == 15) { + INC_PC(sizeof(generic_arm_inst)); goto DISPATCH; } } cpu->Reg[15] += GET_INST_SIZE(cpu); - INC_PC(sizeof(ldst_inst)); + INC_PC(sizeof(generic_arm_inst)); FETCH_INST; GOTO_NEXT_INST; } LDREXB_INST: { - ldst_inst *inst_cream = (ldst_inst *)inst_base->component; + generic_arm_inst* inst_cream = (generic_arm_inst*)inst_base->component; if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) { - addr = cpu->Reg[BITS(inst_cream->inst, 16, 19)]; + unsigned int read_addr = RN; - unsigned int value = Memory::Read8(addr); + add_exclusive_addr(cpu, read_addr); + cpu->exclusive_state = 1; + + RD = Memory::Read8(read_addr); + if (inst_cream->Rd == 15) { + INC_PC(sizeof(generic_arm_inst)); + goto DISPATCH; + } + } + cpu->Reg[15] += GET_INST_SIZE(cpu); + INC_PC(sizeof(generic_arm_inst)); + FETCH_INST; + GOTO_NEXT_INST; + } + LDREXH_INST: + { + generic_arm_inst* inst_cream = (generic_arm_inst*)inst_base->component; + if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) { + unsigned int read_addr = RN; - add_exclusive_addr(cpu, addr); + add_exclusive_addr(cpu, read_addr); cpu->exclusive_state = 1; - cpu->Reg[BITS(inst_cream->inst, 12, 15)] = value; - if (BITS(inst_cream->inst, 12, 15) == 15) { - INC_PC(sizeof(ldst_inst)); + RD = Memory::Read16(read_addr); + if (inst_cream->Rd == 15) { + INC_PC(sizeof(generic_arm_inst)); goto DISPATCH; } } cpu->Reg[15] += GET_INST_SIZE(cpu); - INC_PC(sizeof(ldst_inst)); + INC_PC(sizeof(generic_arm_inst)); + FETCH_INST; + GOTO_NEXT_INST; + } + LDREXD_INST: + { + generic_arm_inst* inst_cream = (generic_arm_inst*)inst_base->component; + if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) { + unsigned int read_addr = RN; + + add_exclusive_addr(cpu, read_addr); + cpu->exclusive_state = 1; + // TODO(bunnei): Do we need to also make [read_addr + 4] exclusive? + + RD = Memory::Read32(read_addr); + RD2 = Memory::Read32(read_addr + 4); + + if (inst_cream->Rd == 15) { + INC_PC(sizeof(generic_arm_inst)); + goto DISPATCH; + } + } + cpu->Reg[15] += GET_INST_SIZE(cpu); + INC_PC(sizeof(generic_arm_inst)); FETCH_INST; GOTO_NEXT_INST; } @@ -5762,46 +5794,96 @@ unsigned InterpreterMainLoop(ARMul_State* state) { } STREX_INST: { - ldst_inst *inst_cream = (ldst_inst *)inst_base->component; + generic_arm_inst* inst_cream = (generic_arm_inst*)inst_base->component; + if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) { - addr = cpu->Reg[BITS(inst_cream->inst, 16, 19)]; - unsigned int value = cpu->Reg[BITS(inst_cream->inst, 0, 3)]; + unsigned int write_addr = cpu->Reg[inst_cream->Rn]; - int dest_reg = BITS(inst_cream->inst, 12, 15); - if((exclusive_detect(cpu, addr) == 0) && (cpu->exclusive_state == 1)){ - remove_exclusive(cpu, addr); - cpu->Reg[dest_reg] = 0; + if ((exclusive_detect(cpu, write_addr) == 0) && (cpu->exclusive_state == 1)) { + remove_exclusive(cpu, write_addr); cpu->exclusive_state = 0; - Memory::Write32(addr, value); + Memory::Write32(write_addr, cpu->Reg[inst_cream->Rm]); + RD = 0; } else { // Failed to write due to mutex access - cpu->Reg[dest_reg] = 1; + RD = 1; } } cpu->Reg[15] += GET_INST_SIZE(cpu); - INC_PC(sizeof(ldst_inst)); + INC_PC(sizeof(generic_arm_inst)); FETCH_INST; GOTO_NEXT_INST; } STREXB_INST: { - ldst_inst *inst_cream = (ldst_inst *)inst_base->component; + generic_arm_inst* inst_cream = (generic_arm_inst*)inst_base->component; + if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) { - addr = cpu->Reg[BITS(inst_cream->inst, 16, 19)]; - unsigned int value = cpu->Reg[BITS(inst_cream->inst, 0, 3)] & 0xff; - int dest_reg = BITS(inst_cream->inst, 12, 15); - if((exclusive_detect(cpu, addr) == 0) && (cpu->exclusive_state == 1)){ - remove_exclusive(cpu, addr); - cpu->Reg[dest_reg] = 0; + unsigned int write_addr = cpu->Reg[inst_cream->Rn]; + + if ((exclusive_detect(cpu, write_addr) == 0) && (cpu->exclusive_state == 1)) { + remove_exclusive(cpu, write_addr); cpu->exclusive_state = 0; - Memory::Write8(addr, value); + + Memory::Write8(write_addr, cpu->Reg[inst_cream->Rm]); + RD = 0; } else { - cpu->Reg[dest_reg] = 1; + // Failed to write due to mutex access + RD = 1; } } cpu->Reg[15] += GET_INST_SIZE(cpu); - INC_PC(sizeof(ldst_inst)); + INC_PC(sizeof(generic_arm_inst)); + FETCH_INST; + GOTO_NEXT_INST; + } + STREXD_INST: + { + generic_arm_inst* inst_cream = (generic_arm_inst*)inst_base->component; + + if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) { + unsigned int write_addr = cpu->Reg[inst_cream->Rn]; + + if ((exclusive_detect(cpu, write_addr) == 0) && (cpu->exclusive_state == 1)) { + remove_exclusive(cpu, write_addr); + cpu->exclusive_state = 0; + // TODO(bunnei): Remove exclusive from [write_addr + 4] if we implement this in LDREXD + + Memory::Write32(write_addr, cpu->Reg[inst_cream->Rm]); + Memory::Write32(write_addr + 4, cpu->Reg[inst_cream->Rm + 1]); + RD = 0; + } + else { + // Failed to write due to mutex access + RD = 1; + } + } + cpu->Reg[15] += GET_INST_SIZE(cpu); + INC_PC(sizeof(generic_arm_inst)); + FETCH_INST; + GOTO_NEXT_INST; + } + STREXH_INST: + { + generic_arm_inst* inst_cream = (generic_arm_inst*)inst_base->component; + + if ((inst_base->cond == 0xe) || CondPassed(cpu, inst_base->cond)) { + unsigned int write_addr = cpu->Reg[inst_cream->Rn]; + + if ((exclusive_detect(cpu, write_addr) == 0) && (cpu->exclusive_state == 1)) { + remove_exclusive(cpu, write_addr); + cpu->exclusive_state = 0; + + Memory::Write16(write_addr, cpu->Reg[inst_cream->Rm]); + RD = 0; + } else { + // Failed to write due to mutex access + RD = 1; + } + } + cpu->Reg[15] += GET_INST_SIZE(cpu); + INC_PC(sizeof(generic_arm_inst)); FETCH_INST; GOTO_NEXT_INST; } -- cgit v1.2.3