src/target/armv8_opcodes.c

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2
   3 /*
   4  * Copyright (C) 2015 by Matthias Welwarsky <matthias.welwarsky@sysgo.com>
   5  */
   6
   7 #ifdef HAVE_CONFIG_H
   8 #include "config.h"
   9 #endif
  10
  11 #include <stdint.h>
  12 #include <stdbool.h>
  13
  14 #include "armv8.h"
  15 #include "armv8_opcodes.h"
  16
  17 static const uint32_t a64_opcodes[ARMV8_OPC_NUM] = {
  18                 [READ_REG_CTR]          = ARMV8_MRS(SYSTEM_CTR, 0),
  19                 [READ_REG_CLIDR]        = ARMV8_MRS(SYSTEM_CLIDR, 0),
  20                 [READ_REG_CSSELR]       = ARMV8_MRS(SYSTEM_CSSELR, 0),
  21                 [READ_REG_CCSIDR]       = ARMV8_MRS(SYSTEM_CCSIDR, 0),
  22                 [WRITE_REG_CSSELR]      = ARMV8_MSR_GP(SYSTEM_CSSELR, 0),
  23                 [READ_REG_MPIDR]        = ARMV8_MRS(SYSTEM_MPIDR, 0),
  24                 [READ_REG_DTRRX]        = ARMV8_MRS(SYSTEM_DBG_DTRRX_EL0, 0),
  25                 [WRITE_REG_DTRTX]       = ARMV8_MSR_GP(SYSTEM_DBG_DTRTX_EL0, 0),
  26                 [WRITE_REG_DSPSR]       = ARMV8_MSR_DSPSR(0),
  27                 [READ_REG_DSPSR]        = ARMV8_MRS_DSPSR(0),
  28                 [ARMV8_OPC_DSB_SY]      = ARMV8_DSB_SY,
  29                 [ARMV8_OPC_DCPS]        = ARMV8_DCPS(0, 11),
  30                 [ARMV8_OPC_DRPS]        = ARMV8_DRPS,
  31                 [ARMV8_OPC_ISB_SY]      = ARMV8_ISB,
  32                 [ARMV8_OPC_DCCISW]      = ARMV8_SYS(SYSTEM_DCCISW, 0),
  33                 [ARMV8_OPC_DCCIVAC]     = ARMV8_SYS(SYSTEM_DCCIVAC, 0),
  34                 [ARMV8_OPC_ICIVAU]      = ARMV8_SYS(SYSTEM_ICIVAU, 0),
  35                 [ARMV8_OPC_HLT]         = ARMV8_HLT(11),
  36                 [ARMV8_OPC_LDRB_IP]     = ARMV8_LDRB_IP(1, 0),
  37                 [ARMV8_OPC_LDRH_IP]     = ARMV8_LDRH_IP(1, 0),
  38                 [ARMV8_OPC_LDRW_IP]     = ARMV8_LDRW_IP(1, 0),
  39                 [ARMV8_OPC_STRB_IP]     = ARMV8_STRB_IP(1, 0),
  40                 [ARMV8_OPC_STRH_IP]     = ARMV8_STRH_IP(1, 0),
  41                 [ARMV8_OPC_STRW_IP]     = ARMV8_STRW_IP(1, 0),
  42 };
  43
  44 static const uint32_t t32_opcodes[ARMV8_OPC_NUM] = {
  45                 [READ_REG_CTR]          = ARMV4_5_MRC(15, 0, 0, 0, 0, 1),
  46                 [READ_REG_CLIDR]        = ARMV4_5_MRC(15, 1, 0, 0, 0, 1),
  47                 [READ_REG_CSSELR]       = ARMV4_5_MRC(15, 2, 0, 0, 0, 0),
  48                 [READ_REG_CCSIDR]       = ARMV4_5_MRC(15, 1, 0, 0, 0, 0),
  49                 [WRITE_REG_CSSELR]      = ARMV4_5_MCR(15, 2, 0, 0, 0, 0),
  50                 [READ_REG_MPIDR]        = ARMV4_5_MRC(15, 0, 0, 0, 0, 5),
  51                 [READ_REG_DTRRX]        = ARMV4_5_MRC(14, 0, 0, 0, 5, 0),
  52                 [WRITE_REG_DTRTX]       = ARMV4_5_MCR(14, 0, 0, 0, 5, 0),
  53                 [WRITE_REG_DSPSR]       = ARMV8_MCR_DSPSR(0),
  54                 [READ_REG_DSPSR]        = ARMV8_MRC_DSPSR(0),
  55                 [ARMV8_OPC_DSB_SY]      = ARMV8_DSB_SY_T1,
  56                 [ARMV8_OPC_DCPS]        = ARMV8_DCPS_T1(0),
  57                 [ARMV8_OPC_DRPS]        = ARMV8_ERET_T1,
  58                 [ARMV8_OPC_ISB_SY]      = ARMV8_ISB_SY_T1,
  59                 [ARMV8_OPC_DCCISW]      = ARMV4_5_MCR(15, 0, 0, 7, 14, 2),
  60                 [ARMV8_OPC_DCCIVAC]     = ARMV4_5_MCR(15, 0, 0, 7, 14, 1),
  61                 [ARMV8_OPC_ICIVAU]      = ARMV4_5_MCR(15, 0, 0, 7, 5, 1),
  62                 [ARMV8_OPC_HLT]         = ARMV8_HLT_T1(11),
  63                 [ARMV8_OPC_LDRB_IP]     = ARMV8_LDRB_IP_T3(1, 0),
  64                 [ARMV8_OPC_LDRH_IP]     = ARMV8_LDRH_IP_T3(1, 0),
  65                 [ARMV8_OPC_LDRW_IP]     = ARMV8_LDRW_IP_T3(1, 0),
  66                 [ARMV8_OPC_STRB_IP]     = ARMV8_STRB_IP_T3(1, 0),
  67                 [ARMV8_OPC_STRH_IP]     = ARMV8_STRH_IP_T3(1, 0),
  68                 [ARMV8_OPC_STRW_IP]     = ARMV8_STRW_IP_T3(1, 0),
  69 };
  70
  71 void armv8_select_opcodes(struct armv8_common *armv8, bool state_is_aarch64)
  72 {
  73         if (state_is_aarch64)
  74                 armv8->opcodes = &a64_opcodes[0];
  75         else
  76                 armv8->opcodes = &t32_opcodes[0];
  77 }
  78
  79 uint32_t armv8_opcode(struct armv8_common *armv8, enum armv8_opcode code)
  80 {
  81         if ((int)code >= ARMV8_OPC_NUM)
  82                 return -1;
  83
  84         return *(armv8->opcodes + code);
  85 }