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qemu / qemu / 35845cf8fe8b484dcd5cead7a2b68d7c3099948b / . / target / mips / tcg / nanomips_translate.c.inc
blob: 1e274143bbd3a6d98b233f6b076f1396a509a7ae [file] [log] [blame]
/*
* MIPS emulation for QEMU - nanoMIPS translation routines
*
* Copyright (c) 2004-2005 Jocelyn Mayer
* Copyright (c) 2006 Marius Groeger (FPU operations)
* Copyright (c) 2006 Thiemo Seufer (MIPS32R2 support)
* Copyright (c) 2009 CodeSourcery (MIPS16 and microMIPS support)
* Copyright (c) 2012 Jia Liu & Dongxue Zhang (MIPS ASE DSP support)
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
/* MAJOR, P16, and P32 pools opcodes */
enum {
NM_P_ADDIU = 0x00,
NM_ADDIUPC = 0x01,
NM_MOVE_BALC = 0x02,
NM_P16_MV = 0x04,
NM_LW16 = 0x05,
NM_BC16 = 0x06,
NM_P16_SR = 0x07,
NM_POOL32A = 0x08,
NM_P_BAL = 0x0a,
NM_P16_SHIFT = 0x0c,
NM_LWSP16 = 0x0d,
NM_BALC16 = 0x0e,
NM_P16_4X4 = 0x0f,
NM_P_GP_W = 0x10,
NM_P_GP_BH = 0x11,
NM_P_J = 0x12,
NM_P16C = 0x14,
NM_LWGP16 = 0x15,
NM_P16_LB = 0x17,
NM_P48I = 0x18,
NM_P16_A1 = 0x1c,
NM_LW4X4 = 0x1d,
NM_P16_LH = 0x1f,
NM_P_U12 = 0x20,
NM_P_LS_U12 = 0x21,
NM_P_BR1 = 0x22,
NM_P16_A2 = 0x24,
NM_SW16 = 0x25,
NM_BEQZC16 = 0x26,
NM_POOL32F = 0x28,
NM_P_LS_S9 = 0x29,
NM_P_BR2 = 0x2a,
NM_P16_ADDU = 0x2c,
NM_SWSP16 = 0x2d,
NM_BNEZC16 = 0x2e,
NM_MOVEP = 0x2f,
NM_POOL32S = 0x30,
NM_P_BRI = 0x32,
NM_LI16 = 0x34,
NM_SWGP16 = 0x35,
NM_P16_BR = 0x36,
NM_P_LUI = 0x38,
NM_ANDI16 = 0x3c,
NM_SW4X4 = 0x3d,
NM_MOVEPREV = 0x3f,
};
/* POOL32A instruction pool */
enum {
NM_POOL32A0 = 0x00,
NM_SPECIAL2 = 0x01,
NM_COP2_1 = 0x02,
NM_UDI = 0x03,
NM_POOL32A5 = 0x05,
NM_POOL32A7 = 0x07,
};
/* P.GP.W instruction pool */
enum {
NM_ADDIUGP_W = 0x00,
NM_LWGP = 0x02,
NM_SWGP = 0x03,
};
/* P48I instruction pool */
enum {
NM_LI48 = 0x00,
NM_ADDIU48 = 0x01,
NM_ADDIUGP48 = 0x02,
NM_ADDIUPC48 = 0x03,
NM_LWPC48 = 0x0b,
NM_SWPC48 = 0x0f,
};
/* P.U12 instruction pool */
enum {
NM_ORI = 0x00,
NM_XORI = 0x01,
NM_ANDI = 0x02,
NM_P_SR = 0x03,
NM_SLTI = 0x04,
NM_SLTIU = 0x05,
NM_SEQI = 0x06,
NM_ADDIUNEG = 0x08,
NM_P_SHIFT = 0x0c,
NM_P_ROTX = 0x0d,
NM_P_INS = 0x0e,
NM_P_EXT = 0x0f,
};
/* POOL32F instruction pool */
enum {
NM_POOL32F_0 = 0x00,
NM_POOL32F_3 = 0x03,
NM_POOL32F_5 = 0x05,
};
/* POOL32S instruction pool */
enum {
NM_POOL32S_0 = 0x00,
NM_POOL32S_4 = 0x04,
};
/* P.LUI instruction pool */
enum {
NM_LUI = 0x00,
NM_ALUIPC = 0x01,
};
/* P.GP.BH instruction pool */
enum {
NM_LBGP = 0x00,
NM_SBGP = 0x01,
NM_LBUGP = 0x02,
NM_ADDIUGP_B = 0x03,
NM_P_GP_LH = 0x04,
NM_P_GP_SH = 0x05,
NM_P_GP_CP1 = 0x06,
};
/* P.LS.U12 instruction pool */
enum {
NM_LB = 0x00,
NM_SB = 0x01,
NM_LBU = 0x02,
NM_P_PREFU12 = 0x03,
NM_LH = 0x04,
NM_SH = 0x05,
NM_LHU = 0x06,
NM_LWU = 0x07,
NM_LW = 0x08,
NM_SW = 0x09,
NM_LWC1 = 0x0a,
NM_SWC1 = 0x0b,
NM_LDC1 = 0x0e,
NM_SDC1 = 0x0f,
};
/* P.LS.S9 instruction pool */
enum {
NM_P_LS_S0 = 0x00,
NM_P_LS_S1 = 0x01,
NM_P_LS_E0 = 0x02,
NM_P_LS_WM = 0x04,
NM_P_LS_UAWM = 0x05,
};
/* P.BAL instruction pool */
enum {
NM_BC = 0x00,
NM_BALC = 0x01,
};
/* P.J instruction pool */
enum {
NM_JALRC = 0x00,
NM_JALRC_HB = 0x01,
NM_P_BALRSC = 0x08,
};
/* P.BR1 instruction pool */
enum {
NM_BEQC = 0x00,
NM_P_BR3A = 0x01,
NM_BGEC = 0x02,
NM_BGEUC = 0x03,
};
/* P.BR2 instruction pool */
enum {
NM_BNEC = 0x00,
NM_BLTC = 0x02,
NM_BLTUC = 0x03,
};
/* P.BRI instruction pool */
enum {
NM_BEQIC = 0x00,
NM_BBEQZC = 0x01,
NM_BGEIC = 0x02,
NM_BGEIUC = 0x03,
NM_BNEIC = 0x04,
NM_BBNEZC = 0x05,
NM_BLTIC = 0x06,
NM_BLTIUC = 0x07,
};
/* P16.SHIFT instruction pool */
enum {
NM_SLL16 = 0x00,
NM_SRL16 = 0x01,
};
/* POOL16C instruction pool */
enum {
NM_POOL16C_0 = 0x00,
NM_LWXS16 = 0x01,
};
/* P16.A1 instruction pool */
enum {
NM_ADDIUR1SP = 0x01,
};
/* P16.A2 instruction pool */
enum {
NM_ADDIUR2 = 0x00,
NM_P_ADDIURS5 = 0x01,
};
/* P16.ADDU instruction pool */
enum {
NM_ADDU16 = 0x00,
NM_SUBU16 = 0x01,
};
/* P16.SR instruction pool */
enum {
NM_SAVE16 = 0x00,
NM_RESTORE_JRC16 = 0x01,
};
/* P16.4X4 instruction pool */
enum {
NM_ADDU4X4 = 0x00,
NM_MUL4X4 = 0x01,
};
/* P16.LB instruction pool */
enum {
NM_LB16 = 0x00,
NM_SB16 = 0x01,
NM_LBU16 = 0x02,
};
/* P16.LH instruction pool */
enum {
NM_LH16 = 0x00,
NM_SH16 = 0x01,
NM_LHU16 = 0x02,
};
/* P.RI instruction pool */
enum {
NM_SIGRIE = 0x00,
NM_P_SYSCALL = 0x01,
NM_BREAK = 0x02,
NM_SDBBP = 0x03,
};
/* POOL32A0 instruction pool */
enum {
NM_P_TRAP = 0x00,
NM_SEB = 0x01,
NM_SLLV = 0x02,
NM_MUL = 0x03,
NM_MFC0 = 0x06,
NM_MFHC0 = 0x07,
NM_SEH = 0x09,
NM_SRLV = 0x0a,
NM_MUH = 0x0b,
NM_MTC0 = 0x0e,
NM_MTHC0 = 0x0f,
NM_SRAV = 0x12,
NM_MULU = 0x13,
NM_ROTRV = 0x1a,
NM_MUHU = 0x1b,
NM_ADD = 0x22,
NM_DIV = 0x23,
NM_ADDU = 0x2a,
NM_MOD = 0x2b,
NM_SUB = 0x32,
NM_DIVU = 0x33,
NM_RDHWR = 0x38,
NM_SUBU = 0x3a,
NM_MODU = 0x3b,
NM_P_CMOVE = 0x42,
NM_FORK = 0x45,
NM_MFTR = 0x46,
NM_MFHTR = 0x47,
NM_AND = 0x4a,
NM_YIELD = 0x4d,
NM_MTTR = 0x4e,
NM_MTHTR = 0x4f,
NM_OR = 0x52,
NM_D_E_MT_VPE = 0x56,
NM_NOR = 0x5a,
NM_XOR = 0x62,
NM_SLT = 0x6a,
NM_P_SLTU = 0x72,
NM_SOV = 0x7a,
};
/* CRC32 instruction pool */
enum {
NM_CRC32B = 0x00,
NM_CRC32H = 0x01,
NM_CRC32W = 0x02,
NM_CRC32CB = 0x04,
NM_CRC32CH = 0x05,
NM_CRC32CW = 0x06,
};
/* POOL32A5 instruction pool */
enum {
NM_CMP_EQ_PH = 0x00,
NM_CMP_LT_PH = 0x08,
NM_CMP_LE_PH = 0x10,
NM_CMPGU_EQ_QB = 0x18,
NM_CMPGU_LT_QB = 0x20,
NM_CMPGU_LE_QB = 0x28,
NM_CMPGDU_EQ_QB = 0x30,
NM_CMPGDU_LT_QB = 0x38,
NM_CMPGDU_LE_QB = 0x40,
NM_CMPU_EQ_QB = 0x48,
NM_CMPU_LT_QB = 0x50,
NM_CMPU_LE_QB = 0x58,
NM_ADDQ_S_W = 0x60,
NM_SUBQ_S_W = 0x68,
NM_ADDSC = 0x70,
NM_ADDWC = 0x78,
NM_ADDQ_S_PH = 0x01,
NM_ADDQH_R_PH = 0x09,
NM_ADDQH_R_W = 0x11,
NM_ADDU_S_QB = 0x19,
NM_ADDU_S_PH = 0x21,
NM_ADDUH_R_QB = 0x29,
NM_SHRAV_R_PH = 0x31,
NM_SHRAV_R_QB = 0x39,
NM_SUBQ_S_PH = 0x41,
NM_SUBQH_R_PH = 0x49,
NM_SUBQH_R_W = 0x51,
NM_SUBU_S_QB = 0x59,
NM_SUBU_S_PH = 0x61,
NM_SUBUH_R_QB = 0x69,
NM_SHLLV_S_PH = 0x71,
NM_PRECR_SRA_R_PH_W = 0x79,
NM_MULEU_S_PH_QBL = 0x12,
NM_MULEU_S_PH_QBR = 0x1a,
NM_MULQ_RS_PH = 0x22,
NM_MULQ_S_PH = 0x2a,
NM_MULQ_RS_W = 0x32,
NM_MULQ_S_W = 0x3a,
NM_APPEND = 0x42,
NM_MODSUB = 0x52,
NM_SHRAV_R_W = 0x5a,
NM_SHRLV_PH = 0x62,
NM_SHRLV_QB = 0x6a,
NM_SHLLV_QB = 0x72,
NM_SHLLV_S_W = 0x7a,
NM_SHILO = 0x03,
NM_MULEQ_S_W_PHL = 0x04,
NM_MULEQ_S_W_PHR = 0x0c,
NM_MUL_S_PH = 0x05,
NM_PRECR_QB_PH = 0x0d,
NM_PRECRQ_QB_PH = 0x15,
NM_PRECRQ_PH_W = 0x1d,
NM_PRECRQ_RS_PH_W = 0x25,
NM_PRECRQU_S_QB_PH = 0x2d,
NM_PACKRL_PH = 0x35,
NM_PICK_QB = 0x3d,
NM_PICK_PH = 0x45,
NM_SHRA_R_W = 0x5e,
NM_SHRA_R_PH = 0x66,
NM_SHLL_S_PH = 0x76,
NM_SHLL_S_W = 0x7e,
NM_REPL_PH = 0x07
};
/* POOL32A7 instruction pool */
enum {
NM_P_LSX = 0x00,
NM_LSA = 0x01,
NM_EXTW = 0x03,
NM_POOL32AXF = 0x07,
};
/* P.SR instruction pool */
enum {
NM_PP_SR = 0x00,
NM_P_SR_F = 0x01,
};
/* P.SHIFT instruction pool */
enum {
NM_P_SLL = 0x00,
NM_SRL = 0x02,
NM_SRA = 0x04,
NM_ROTR = 0x06,
};
/* P.ROTX instruction pool */
enum {
NM_ROTX = 0x00,
};
/* P.INS instruction pool */
enum {
NM_INS = 0x00,
};
/* P.EXT instruction pool */
enum {
NM_EXT = 0x00,
};
/* POOL32F_0 (fmt) instruction pool */
enum {
NM_RINT_S = 0x04,
NM_RINT_D = 0x44,
NM_ADD_S = 0x06,
NM_SELEQZ_S = 0x07,
NM_SELEQZ_D = 0x47,
NM_CLASS_S = 0x0c,
NM_CLASS_D = 0x4c,
NM_SUB_S = 0x0e,
NM_SELNEZ_S = 0x0f,
NM_SELNEZ_D = 0x4f,
NM_MUL_S = 0x16,
NM_SEL_S = 0x17,
NM_SEL_D = 0x57,
NM_DIV_S = 0x1e,
NM_ADD_D = 0x26,
NM_SUB_D = 0x2e,
NM_MUL_D = 0x36,
NM_MADDF_S = 0x37,
NM_MADDF_D = 0x77,
NM_DIV_D = 0x3e,
NM_MSUBF_S = 0x3f,
NM_MSUBF_D = 0x7f,
};
/* POOL32F_3 instruction pool */
enum {
NM_MIN_FMT = 0x00,
NM_MAX_FMT = 0x01,
NM_MINA_FMT = 0x04,
NM_MAXA_FMT = 0x05,
NM_POOL32FXF = 0x07,
};
/* POOL32F_5 instruction pool */
enum {
NM_CMP_CONDN_S = 0x00,
NM_CMP_CONDN_D = 0x02,
};
/* P.GP.LH instruction pool */
enum {
NM_LHGP = 0x00,
NM_LHUGP = 0x01,
};
/* P.GP.SH instruction pool */
enum {
NM_SHGP = 0x00,
};
/* P.GP.CP1 instruction pool */
enum {
NM_LWC1GP = 0x00,
NM_SWC1GP = 0x01,
NM_LDC1GP = 0x02,
NM_SDC1GP = 0x03,
};
/* P.LS.S0 instruction pool */
enum {
NM_LBS9 = 0x00,
NM_LHS9 = 0x04,
NM_LWS9 = 0x08,
NM_LDS9 = 0x0c,
NM_SBS9 = 0x01,
NM_SHS9 = 0x05,
NM_SWS9 = 0x09,
NM_SDS9 = 0x0d,
NM_LBUS9 = 0x02,
NM_LHUS9 = 0x06,
NM_LWC1S9 = 0x0a,
NM_LDC1S9 = 0x0e,
NM_P_PREFS9 = 0x03,
NM_LWUS9 = 0x07,
NM_SWC1S9 = 0x0b,
NM_SDC1S9 = 0x0f,
};
/* P.LS.S1 instruction pool */
enum {
NM_ASET_ACLR = 0x02,
NM_UALH = 0x04,
NM_UASH = 0x05,
NM_CACHE = 0x07,
NM_P_LL = 0x0a,
NM_P_SC = 0x0b,
};
/* P.LS.E0 instruction pool */
enum {
NM_LBE = 0x00,
NM_SBE = 0x01,
NM_LBUE = 0x02,
NM_P_PREFE = 0x03,
NM_LHE = 0x04,
NM_SHE = 0x05,
NM_LHUE = 0x06,
NM_CACHEE = 0x07,
NM_LWE = 0x08,
NM_SWE = 0x09,
NM_P_LLE = 0x0a,
NM_P_SCE = 0x0b,
};
/* P.PREFE instruction pool */
enum {
NM_SYNCIE = 0x00,
NM_PREFE = 0x01,
};
/* P.LLE instruction pool */
enum {
NM_LLE = 0x00,
NM_LLWPE = 0x01,
};
/* P.SCE instruction pool */
enum {
NM_SCE = 0x00,
NM_SCWPE = 0x01,
};
/* P.LS.WM instruction pool */
enum {
NM_LWM = 0x00,
NM_SWM = 0x01,
};
/* P.LS.UAWM instruction pool */
enum {
NM_UALWM = 0x00,
NM_UASWM = 0x01,
};
/* P.BR3A instruction pool */
enum {
NM_BC1EQZC = 0x00,
NM_BC1NEZC = 0x01,
NM_BC2EQZC = 0x02,
NM_BC2NEZC = 0x03,
NM_BPOSGE32C = 0x04,
};
/* P16.RI instruction pool */
enum {
NM_P16_SYSCALL = 0x01,
NM_BREAK16 = 0x02,
NM_SDBBP16 = 0x03,
};
/* POOL16C_0 instruction pool */
enum {
NM_POOL16C_00 = 0x00,
};
/* P16.JRC instruction pool */
enum {
NM_JRC = 0x00,
NM_JALRC16 = 0x01,
};
/* P.SYSCALL instruction pool */
enum {
NM_SYSCALL = 0x00,
NM_HYPCALL = 0x01,
};
/* P.TRAP instruction pool */
enum {
NM_TEQ = 0x00,
NM_TNE = 0x01,
};
/* P.CMOVE instruction pool */
enum {
NM_MOVZ = 0x00,
NM_MOVN = 0x01,
};
/* POOL32Axf instruction pool */
enum {
NM_POOL32AXF_1 = 0x01,
NM_POOL32AXF_2 = 0x02,
NM_POOL32AXF_4 = 0x04,
NM_POOL32AXF_5 = 0x05,
NM_POOL32AXF_7 = 0x07,
};
/* POOL32Axf_1 instruction pool */
enum {
NM_POOL32AXF_1_0 = 0x00,
NM_POOL32AXF_1_1 = 0x01,
NM_POOL32AXF_1_3 = 0x03,
NM_POOL32AXF_1_4 = 0x04,
NM_POOL32AXF_1_5 = 0x05,
NM_POOL32AXF_1_7 = 0x07,
};
/* POOL32Axf_2 instruction pool */
enum {
NM_POOL32AXF_2_0_7 = 0x00,
NM_POOL32AXF_2_8_15 = 0x01,
NM_POOL32AXF_2_16_23 = 0x02,
NM_POOL32AXF_2_24_31 = 0x03,
};
/* POOL32Axf_7 instruction pool */
enum {
NM_SHRA_R_QB = 0x0,
NM_SHRL_PH = 0x1,
NM_REPL_QB = 0x2,
};
/* POOL32Axf_1_0 instruction pool */
enum {
NM_MFHI = 0x0,
NM_MFLO = 0x1,
NM_MTHI = 0x2,
NM_MTLO = 0x3,
};
/* POOL32Axf_1_1 instruction pool */
enum {
NM_MTHLIP = 0x0,
NM_SHILOV = 0x1,
};
/* POOL32Axf_1_3 instruction pool */
enum {
NM_RDDSP = 0x0,
NM_WRDSP = 0x1,
NM_EXTP = 0x2,
NM_EXTPDP = 0x3,
};
/* POOL32Axf_1_4 instruction pool */
enum {
NM_SHLL_QB = 0x0,
NM_SHRL_QB = 0x1,
};
/* POOL32Axf_1_5 instruction pool */
enum {
NM_MAQ_S_W_PHR = 0x0,
NM_MAQ_S_W_PHL = 0x1,
NM_MAQ_SA_W_PHR = 0x2,
NM_MAQ_SA_W_PHL = 0x3,
};
/* POOL32Axf_1_7 instruction pool */
enum {
NM_EXTR_W = 0x0,
NM_EXTR_R_W = 0x1,
NM_EXTR_RS_W = 0x2,
NM_EXTR_S_H = 0x3,
};
/* POOL32Axf_2_0_7 instruction pool */
enum {
NM_DPA_W_PH = 0x0,
NM_DPAQ_S_W_PH = 0x1,
NM_DPS_W_PH = 0x2,
NM_DPSQ_S_W_PH = 0x3,
NM_BALIGN = 0x4,
NM_MADD = 0x5,
NM_MULT = 0x6,
NM_EXTRV_W = 0x7,
};
/* POOL32Axf_2_8_15 instruction pool */
enum {
NM_DPAX_W_PH = 0x0,
NM_DPAQ_SA_L_W = 0x1,
NM_DPSX_W_PH = 0x2,
NM_DPSQ_SA_L_W = 0x3,
NM_MADDU = 0x5,
NM_MULTU = 0x6,
NM_EXTRV_R_W = 0x7,
};
/* POOL32Axf_2_16_23 instruction pool */
enum {
NM_DPAU_H_QBL = 0x0,
NM_DPAQX_S_W_PH = 0x1,
NM_DPSU_H_QBL = 0x2,
NM_DPSQX_S_W_PH = 0x3,
NM_EXTPV = 0x4,
NM_MSUB = 0x5,
NM_MULSA_W_PH = 0x6,
NM_EXTRV_RS_W = 0x7,
};
/* POOL32Axf_2_24_31 instruction pool */
enum {
NM_DPAU_H_QBR = 0x0,
NM_DPAQX_SA_W_PH = 0x1,
NM_DPSU_H_QBR = 0x2,
NM_DPSQX_SA_W_PH = 0x3,
NM_EXTPDPV = 0x4,
NM_MSUBU = 0x5,
NM_MULSAQ_S_W_PH = 0x6,
NM_EXTRV_S_H = 0x7,
};
/* POOL32Axf_{4, 5} instruction pool */
enum {
NM_CLO = 0x25,
NM_CLZ = 0x2d,
NM_TLBP = 0x01,
NM_TLBR = 0x09,
NM_TLBWI = 0x11,
NM_TLBWR = 0x19,
NM_TLBINV = 0x03,
NM_TLBINVF = 0x0b,
NM_DI = 0x23,
NM_EI = 0x2b,
NM_RDPGPR = 0x70,
NM_WRPGPR = 0x78,
NM_WAIT = 0x61,
NM_DERET = 0x71,
NM_ERETX = 0x79,
/* nanoMIPS DSP instructions */
NM_ABSQ_S_QB = 0x00,
NM_ABSQ_S_PH = 0x08,
NM_ABSQ_S_W = 0x10,
NM_PRECEQ_W_PHL = 0x28,
NM_PRECEQ_W_PHR = 0x30,
NM_PRECEQU_PH_QBL = 0x38,
NM_PRECEQU_PH_QBR = 0x48,
NM_PRECEU_PH_QBL = 0x58,
NM_PRECEU_PH_QBR = 0x68,
NM_PRECEQU_PH_QBLA = 0x39,
NM_PRECEQU_PH_QBRA = 0x49,
NM_PRECEU_PH_QBLA = 0x59,
NM_PRECEU_PH_QBRA = 0x69,
NM_REPLV_PH = 0x01,
NM_REPLV_QB = 0x09,
NM_BITREV = 0x18,
NM_INSV = 0x20,
NM_RADDU_W_QB = 0x78,
NM_BITSWAP = 0x05,
NM_WSBH = 0x3d,
};
/* PP.SR instruction pool */
enum {
NM_SAVE = 0x00,
NM_RESTORE = 0x02,
NM_RESTORE_JRC = 0x03,
};
/* P.SR.F instruction pool */
enum {
NM_SAVEF = 0x00,
NM_RESTOREF = 0x01,
};
/* P16.SYSCALL instruction pool */
enum {
NM_SYSCALL16 = 0x00,
NM_HYPCALL16 = 0x01,
};
/* POOL16C_00 instruction pool */
enum {
NM_NOT16 = 0x00,
NM_XOR16 = 0x01,
NM_AND16 = 0x02,
NM_OR16 = 0x03,
};
/* PP.LSX and PP.LSXS instruction pool */
enum {
NM_LBX = 0x00,
NM_LHX = 0x04,
NM_LWX = 0x08,
NM_LDX = 0x0c,
NM_SBX = 0x01,
NM_SHX = 0x05,
NM_SWX = 0x09,
NM_SDX = 0x0d,
NM_LBUX = 0x02,
NM_LHUX = 0x06,
NM_LWC1X = 0x0a,
NM_LDC1X = 0x0e,
NM_LWUX = 0x07,
NM_SWC1X = 0x0b,
NM_SDC1X = 0x0f,
NM_LHXS = 0x04,
NM_LWXS = 0x08,
NM_LDXS = 0x0c,
NM_SHXS = 0x05,
NM_SWXS = 0x09,
NM_SDXS = 0x0d,
NM_LHUXS = 0x06,
NM_LWC1XS = 0x0a,
NM_LDC1XS = 0x0e,
NM_LWUXS = 0x07,
NM_SWC1XS = 0x0b,
NM_SDC1XS = 0x0f,
};
/* ERETx instruction pool */
enum {
NM_ERET = 0x00,
NM_ERETNC = 0x01,
};
/* POOL32FxF_{0, 1} insturction pool */
enum {
NM_CFC1 = 0x40,
NM_CTC1 = 0x60,
NM_MFC1 = 0x80,
NM_MTC1 = 0xa0,
NM_MFHC1 = 0xc0,
NM_MTHC1 = 0xe0,
NM_CVT_S_PL = 0x84,
NM_CVT_S_PU = 0xa4,
NM_CVT_L_S = 0x004,
NM_CVT_L_D = 0x104,
NM_CVT_W_S = 0x024,
NM_CVT_W_D = 0x124,
NM_RSQRT_S = 0x008,
NM_RSQRT_D = 0x108,
NM_SQRT_S = 0x028,
NM_SQRT_D = 0x128,
NM_RECIP_S = 0x048,
NM_RECIP_D = 0x148,
NM_FLOOR_L_S = 0x00c,
NM_FLOOR_L_D = 0x10c,
NM_FLOOR_W_S = 0x02c,
NM_FLOOR_W_D = 0x12c,
NM_CEIL_L_S = 0x04c,
NM_CEIL_L_D = 0x14c,
NM_CEIL_W_S = 0x06c,
NM_CEIL_W_D = 0x16c,
NM_TRUNC_L_S = 0x08c,
NM_TRUNC_L_D = 0x18c,
NM_TRUNC_W_S = 0x0ac,
NM_TRUNC_W_D = 0x1ac,
NM_ROUND_L_S = 0x0cc,
NM_ROUND_L_D = 0x1cc,
NM_ROUND_W_S = 0x0ec,
NM_ROUND_W_D = 0x1ec,
NM_MOV_S = 0x01,
NM_MOV_D = 0x81,
NM_ABS_S = 0x0d,
NM_ABS_D = 0x8d,
NM_NEG_S = 0x2d,
NM_NEG_D = 0xad,
NM_CVT_D_S = 0x04d,
NM_CVT_D_W = 0x0cd,
NM_CVT_D_L = 0x14d,
NM_CVT_S_D = 0x06d,
NM_CVT_S_W = 0x0ed,
NM_CVT_S_L = 0x16d,
};
/* P.LL instruction pool */
enum {
NM_LL = 0x00,
NM_LLWP = 0x01,
};
/* P.SC instruction pool */
enum {
NM_SC = 0x00,
NM_SCWP = 0x01,
};
/* P.DVP instruction pool */
enum {
NM_DVP = 0x00,
NM_EVP = 0x01,
};
/*
*
* nanoMIPS decoding engine
*
*/
/* extraction utilities */
#define NANOMIPS_EXTRACT_RT3(op) ((op >> 7) & 0x7)
#define NANOMIPS_EXTRACT_RS3(op) ((op >> 4) & 0x7)
#define NANOMIPS_EXTRACT_RD3(op) ((op >> 1) & 0x7)
#define NANOMIPS_EXTRACT_RD5(op) ((op >> 5) & 0x1f)
#define NANOMIPS_EXTRACT_RS5(op) (op & 0x1f)
/* Implement nanoMIPS pseudocode decode_gpr(encoded_gpr, 'gpr3'). */
static inline int decode_gpr_gpr3(int r)
{
static const int map[] = { 16, 17, 18, 19, 4, 5, 6, 7 };
return map[r & 0x7];
}
/* Implement nanoMIPS pseudocode decode_gpr(encoded_gpr, 'gpr3.src.store'). */
static inline int decode_gpr_gpr3_src_store(int r)
{
static const int map[] = { 0, 17, 18, 19, 4, 5, 6, 7 };
return map[r & 0x7];
}
/* Implement nanoMIPS pseudocode decode_gpr(encoded_gpr, 'gpr4'). */
static inline int decode_gpr_gpr4(int r)
{
static const int map[] = { 8, 9, 10, 11, 4, 5, 6, 7,
16, 17, 18, 19, 20, 21, 22, 23 };
return map[r & 0xf];
}
/* Implement nanoMIPS pseudocode decode_gpr(encoded_gpr, 'gpr4.zero'). */
static inline int decode_gpr_gpr4_zero(int r)
{
static const int map[] = { 8, 9, 10, 0, 4, 5, 6, 7,
16, 17, 18, 19, 20, 21, 22, 23 };
return map[r & 0xf];
}
static void gen_ext(DisasContext *ctx, int wordsz, int rd, int rs, int rt,
int shift)
{
gen_align_bits(ctx, wordsz, rd, rs, rt, wordsz - shift);
}
static void gen_llwp(DisasContext *ctx, uint32_t base, int16_t offset,
uint32_t reg1, uint32_t reg2)
{
TCGv taddr = tcg_temp_new();
TCGv_i64 tval = tcg_temp_new_i64();
TCGv tmp1 = tcg_temp_new();
TCGv tmp2 = tcg_temp_new();
gen_base_offset_addr(ctx, taddr, base, offset);
tcg_gen_qemu_ld_i64(tval, taddr, ctx->mem_idx,
mo_endian(ctx) | MO_UQ | MO_ALIGN);
if (disas_is_bigendian(ctx)) {
tcg_gen_extr_i64_tl(tmp2, tmp1, tval);
} else {
tcg_gen_extr_i64_tl(tmp1, tmp2, tval);
}
gen_store_gpr(tmp1, reg1);
gen_store_gpr(tmp2, reg2);
tcg_gen_st_i64(tval, tcg_env, offsetof(CPUMIPSState, llval_wp));
tcg_gen_st_tl(taddr, tcg_env, offsetof(CPUMIPSState, lladdr));
}
static void gen_scwp(DisasContext *ctx, uint32_t base, int16_t offset,
uint32_t reg1, uint32_t reg2, bool eva)
{
TCGv taddr = tcg_temp_new();
TCGv lladdr = tcg_temp_new();
TCGv_i64 tval = tcg_temp_new_i64();
TCGv_i64 llval = tcg_temp_new_i64();
TCGv_i64 val = tcg_temp_new_i64();
TCGv tmp1 = tcg_temp_new();
TCGv tmp2 = tcg_temp_new();
TCGLabel *lab_fail = gen_new_label();
TCGLabel *lab_done = gen_new_label();
gen_base_offset_addr(ctx, taddr, base, offset);
tcg_gen_ld_tl(lladdr, tcg_env, offsetof(CPUMIPSState, lladdr));
tcg_gen_brcond_tl(TCG_COND_NE, taddr, lladdr, lab_fail);
gen_load_gpr(tmp1, reg1);
gen_load_gpr(tmp2, reg2);
if (disas_is_bigendian(ctx)) {
tcg_gen_concat_tl_i64(tval, tmp2, tmp1);
} else {
tcg_gen_concat_tl_i64(tval, tmp1, tmp2);
}
tcg_gen_ld_i64(llval, tcg_env, offsetof(CPUMIPSState, llval_wp));
tcg_gen_atomic_cmpxchg_i64(val, taddr, llval, tval,
eva ? MIPS_HFLAG_UM : ctx->mem_idx,
MO_64 | MO_ALIGN);
if (reg1 != 0) {
tcg_gen_movi_tl(cpu_gpr[reg1], 1);
}
tcg_gen_brcond_i64(TCG_COND_EQ, val, llval, lab_done);
gen_set_label(lab_fail);
if (reg1 != 0) {
tcg_gen_movi_tl(cpu_gpr[reg1], 0);
}
gen_set_label(lab_done);
tcg_gen_st_tl(tcg_constant_tl(-1), tcg_env, offsetof(CPUMIPSState, lladdr));
}
static void gen_adjust_sp(DisasContext *ctx, int u)
{
gen_op_addr_addi(ctx, cpu_gpr[29], cpu_gpr[29], u);
}
static void gen_save(DisasContext *ctx, uint8_t rt, uint8_t count,
uint8_t gp, uint16_t u)
{
int counter = 0;
TCGv va = tcg_temp_new();
TCGv t0 = tcg_temp_new();
while (counter != count) {
bool use_gp = gp && (counter == count - 1);
int this_rt = use_gp ? 28 : (rt & 0x10) | ((rt + counter) & 0x1f);
int this_offset = -((counter + 1) << 2);
gen_base_offset_addr(ctx, va, 29, this_offset);
gen_load_gpr(t0, this_rt);
tcg_gen_qemu_st_tl(t0, va, ctx->mem_idx,
mo_endian(ctx) | MO_UL | ctx->default_tcg_memop_mask);
counter++;
}
/* adjust stack pointer */
gen_adjust_sp(ctx, -u);
}
static void gen_restore(DisasContext *ctx, uint8_t rt, uint8_t count,
uint8_t gp, uint16_t u)
{
int counter = 0;
TCGv va = tcg_temp_new();
TCGv t0 = tcg_temp_new();
while (counter != count) {
bool use_gp = gp && (counter == count - 1);
int this_rt = use_gp ? 28 : (rt & 0x10) | ((rt + counter) & 0x1f);
int this_offset = u - ((counter + 1) << 2);
gen_base_offset_addr(ctx, va, 29, this_offset);
tcg_gen_qemu_ld_tl(t0, va, ctx->mem_idx,
mo_endian(ctx) | MO_SL | ctx->default_tcg_memop_mask);
tcg_gen_ext32s_tl(t0, t0);
gen_store_gpr(t0, this_rt);
counter++;
}
/* adjust stack pointer */
gen_adjust_sp(ctx, u);
}
static void gen_compute_branch_nm(DisasContext *ctx, uint32_t opc,
int insn_bytes,
int rs, int rt, int32_t offset)
{
target_ulong btgt = -1;
int bcond_compute = 0;
TCGv t0 = tcg_temp_new();
TCGv t1 = tcg_temp_new();
/* Load needed operands */
switch (opc) {
case OPC_BEQ:
case OPC_BNE:
/* Compare two registers */
if (rs != rt) {
gen_load_gpr(t0, rs);
gen_load_gpr(t1, rt);
bcond_compute = 1;
}
btgt = ctx->base.pc_next + insn_bytes + offset;
break;
case OPC_BGEZAL:
/* Compare to zero */
if (rs != 0) {
gen_load_gpr(t0, rs);
bcond_compute = 1;
}
btgt = ctx->base.pc_next + insn_bytes + offset;
break;
case OPC_BPOSGE32:
tcg_gen_andi_tl(t0, cpu_dspctrl, 0x3F);
bcond_compute = 1;
btgt = ctx->base.pc_next + insn_bytes + offset;
break;
case OPC_JR:
case OPC_JALR:
/* Jump to register */
if (offset != 0 && offset != 16) {
/*
* Hint = 0 is JR/JALR, hint 16 is JR.HB/JALR.HB, the
* others are reserved.
*/
MIPS_INVAL("jump hint");
gen_reserved_instruction(ctx);
goto out;
}
gen_load_gpr(btarget, rs);
break;
default:
MIPS_INVAL("branch/jump");
gen_reserved_instruction(ctx);
goto out;
}
if (bcond_compute == 0) {
/* No condition to be computed */
switch (opc) {
case OPC_BEQ: /* rx == rx */
/* Always take */
ctx->hflags |= MIPS_HFLAG_B;
break;
case OPC_BGEZAL: /* 0 >= 0 */
/* Always take and link */
tcg_gen_movi_tl(cpu_gpr[31],
ctx->base.pc_next + insn_bytes);
ctx->hflags |= MIPS_HFLAG_B;
break;
case OPC_BNE: /* rx != rx */
tcg_gen_movi_tl(cpu_gpr[31], ctx->base.pc_next + 8);
/* Skip the instruction in the delay slot */
ctx->base.pc_next += 4;
goto out;
case OPC_JR:
ctx->hflags |= MIPS_HFLAG_BR;
break;
case OPC_JALR:
if (rt > 0) {
tcg_gen_movi_tl(cpu_gpr[rt],
ctx->base.pc_next + insn_bytes);
}
ctx->hflags |= MIPS_HFLAG_BR;
break;
default:
MIPS_INVAL("branch/jump");
gen_reserved_instruction(ctx);
goto out;
}
} else {
switch (opc) {
case OPC_BEQ:
tcg_gen_setcond_tl(TCG_COND_EQ, bcond, t0, t1);
goto not_likely;
case OPC_BNE:
tcg_gen_setcond_tl(TCG_COND_NE, bcond, t0, t1);
goto not_likely;
case OPC_BGEZAL:
tcg_gen_setcondi_tl(TCG_COND_GE, bcond, t0, 0);
tcg_gen_movi_tl(cpu_gpr[31],
ctx->base.pc_next + insn_bytes);
goto not_likely;
case OPC_BPOSGE32:
tcg_gen_setcondi_tl(TCG_COND_GE, bcond, t0, 32);
not_likely:
ctx->hflags |= MIPS_HFLAG_BC;
break;
default:
MIPS_INVAL("conditional branch/jump");
gen_reserved_instruction(ctx);
goto out;
}
}
ctx->btarget = btgt;
out:
if (insn_bytes == 2) {
ctx->hflags |= MIPS_HFLAG_B16;
}
}
static void gen_pool16c_nanomips_insn(DisasContext *ctx)
{
int rt = decode_gpr_gpr3(NANOMIPS_EXTRACT_RT3(ctx->opcode));
int rs = decode_gpr_gpr3(NANOMIPS_EXTRACT_RS3(ctx->opcode));
switch (extract32(ctx->opcode, 2, 2)) {
case NM_NOT16:
gen_logic(ctx, OPC_NOR, rt, rs, 0);
break;
case NM_AND16:
gen_logic(ctx, OPC_AND, rt, rt, rs);
break;
case NM_XOR16:
gen_logic(ctx, OPC_XOR, rt, rt, rs);
break;
case NM_OR16:
gen_logic(ctx, OPC_OR, rt, rt, rs);
break;
}
}
static void gen_pool32a0_nanomips_insn(CPUMIPSState *env, DisasContext *ctx)
{
int rt = extract32(ctx->opcode, 21, 5);
int rs = extract32(ctx->opcode, 16, 5);
int rd = extract32(ctx->opcode, 11, 5);
switch (extract32(ctx->opcode, 3, 7)) {
case NM_P_TRAP:
switch (extract32(ctx->opcode, 10, 1)) {
case NM_TEQ:
check_nms(ctx);
gen_trap(ctx, OPC_TEQ, rs, rt, -1, rd);
break;
case NM_TNE:
check_nms(ctx);
gen_trap(ctx, OPC_TNE, rs, rt, -1, rd);
break;
}
break;
case NM_RDHWR:
check_nms(ctx);
gen_rdhwr(ctx, rt, rs, extract32(ctx->opcode, 11, 3));
break;
case NM_SEB:
check_nms(ctx);
gen_bshfl(ctx, OPC_SEB, rs, rt);
break;
case NM_SEH:
gen_bshfl(ctx, OPC_SEH, rs, rt);
break;
case NM_SLLV:
gen_shift(ctx, OPC_SLLV, rd, rt, rs);
break;
case NM_SRLV:
gen_shift(ctx, OPC_SRLV, rd, rt, rs);
break;
case NM_SRAV:
gen_shift(ctx, OPC_SRAV, rd, rt, rs);
break;
case NM_ROTRV:
gen_shift(ctx, OPC_ROTRV, rd, rt, rs);
break;
case NM_ADD:
gen_arith(ctx, OPC_ADD, rd, rs, rt);
break;
case NM_ADDU:
gen_arith(ctx, OPC_ADDU, rd, rs, rt);
break;
case NM_SUB:
check_nms(ctx);
gen_arith(ctx, OPC_SUB, rd, rs, rt);
break;
case NM_SUBU:
gen_arith(ctx, OPC_SUBU, rd, rs, rt);
break;
case NM_P_CMOVE:
switch (extract32(ctx->opcode, 10, 1)) {
case NM_MOVZ:
gen_cond_move(ctx, OPC_MOVZ, rd, rs, rt);
break;
case NM_MOVN:
gen_cond_move(ctx, OPC_MOVN, rd, rs, rt);
break;
}
break;
case NM_AND:
gen_logic(ctx, OPC_AND, rd, rs, rt);
break;
case NM_OR:
gen_logic(ctx, OPC_OR, rd, rs, rt);
break;
case NM_NOR:
gen_logic(ctx, OPC_NOR, rd, rs, rt);
break;
case NM_XOR:
gen_logic(ctx, OPC_XOR, rd, rs, rt);
break;
case NM_SLT:
gen_slt(ctx, OPC_SLT, rd, rs, rt);
break;
case NM_P_SLTU:
if (rd == 0) {
/* P_DVP */
#ifndef CONFIG_USER_ONLY
TCGv t0 = tcg_temp_new();
switch (extract32(ctx->opcode, 10, 1)) {
case NM_DVP:
if (ctx->vp) {
check_cp0_enabled(ctx);
gen_helper_dvp(t0, tcg_env);
gen_store_gpr(t0, rt);
}
break;
case NM_EVP:
if (ctx->vp) {
check_cp0_enabled(ctx);
gen_helper_evp(t0, tcg_env);
gen_store_gpr(t0, rt);
}
break;
}
#endif
} else {
gen_slt(ctx, OPC_SLTU, rd, rs, rt);
}
break;
case NM_SOV:
{
TCGv t0 = tcg_temp_new();
TCGv t1 = tcg_temp_new();
TCGv t2 = tcg_temp_new();
gen_load_gpr(t1, rs);
gen_load_gpr(t2, rt);
tcg_gen_add_tl(t0, t1, t2);
tcg_gen_ext32s_tl(t0, t0);
tcg_gen_xor_tl(t1, t1, t2);
tcg_gen_xor_tl(t2, t0, t2);
tcg_gen_andc_tl(t1, t2, t1);
/* operands of same sign, result different sign */
tcg_gen_setcondi_tl(TCG_COND_LT, t0, t1, 0);
gen_store_gpr(t0, rd);
}
break;
case NM_MUL:
gen_r6_muldiv(ctx, R6_OPC_MUL, rd, rs, rt);
break;
case NM_MUH:
gen_r6_muldiv(ctx, R6_OPC_MUH, rd, rs, rt);
break;
case NM_MULU:
gen_r6_muldiv(ctx, R6_OPC_MULU, rd, rs, rt);
break;
case NM_MUHU:
gen_r6_muldiv(ctx, R6_OPC_MUHU, rd, rs, rt);
break;
case NM_DIV:
gen_r6_muldiv(ctx, R6_OPC_DIV, rd, rs, rt);
break;
case NM_MOD:
gen_r6_muldiv(ctx, R6_OPC_MOD, rd, rs, rt);
break;
case NM_DIVU:
gen_r6_muldiv(ctx, R6_OPC_DIVU, rd, rs, rt);
break;
case NM_MODU:
gen_r6_muldiv(ctx, R6_OPC_MODU, rd, rs, rt);
break;
#ifndef CONFIG_USER_ONLY
case NM_MFC0:
check_cp0_enabled(ctx);
if (rt == 0) {
/* Treat as NOP. */
break;
}
gen_mfc0(ctx, cpu_gpr[rt], rs, extract32(ctx->opcode, 11, 3));
break;
case NM_MTC0:
check_cp0_enabled(ctx);
{
TCGv t0 = tcg_temp_new();
gen_load_gpr(t0, rt);
gen_mtc0(ctx, t0, rs, extract32(ctx->opcode, 11, 3));
}
break;
case NM_D_E_MT_VPE:
{
uint8_t sc = extract32(ctx->opcode, 10, 1);
TCGv t0 = tcg_temp_new();
switch (sc) {
case 0:
if (rs == 1) {
/* DMT */
check_cp0_mt(ctx);
gen_helper_dmt(t0);
gen_store_gpr(t0, rt);
} else if (rs == 0) {
/* DVPE */
check_cp0_mt(ctx);
gen_helper_dvpe(t0, tcg_env);
gen_store_gpr(t0, rt);
} else {
gen_reserved_instruction(ctx);
}
break;
case 1:
if (rs == 1) {
/* EMT */
check_cp0_mt(ctx);
gen_helper_emt(t0);
gen_store_gpr(t0, rt);
} else if (rs == 0) {
/* EVPE */
check_cp0_mt(ctx);
gen_helper_evpe(t0, tcg_env);
gen_store_gpr(t0, rt);
} else {
gen_reserved_instruction(ctx);
}
break;
}
}
break;
case NM_FORK:
check_mt(ctx);
{
TCGv t0 = tcg_temp_new();
TCGv t1 = tcg_temp_new();
gen_load_gpr(t0, rt);
gen_load_gpr(t1, rs);
gen_helper_fork(t0, t1);
}
break;
case NM_MFTR:
case NM_MFHTR:
check_cp0_enabled(ctx);
if (rd == 0) {
/* Treat as NOP. */
return;
}
gen_mftr(env, ctx, rs, rt, extract32(ctx->opcode, 10, 1),
extract32(ctx->opcode, 11, 5), extract32(ctx->opcode, 3, 1));
break;
case NM_MTTR:
case NM_MTHTR:
check_cp0_enabled(ctx);
gen_mttr(env, ctx, rs, rt, extract32(ctx->opcode, 10, 1),
extract32(ctx->opcode, 11, 5), extract32(ctx->opcode, 3, 1));
break;
case NM_YIELD:
check_mt(ctx);
{
TCGv t0 = tcg_temp_new();
gen_load_gpr(t0, rs);
gen_helper_yield(t0, tcg_env, t0);
gen_store_gpr(t0, rt);
}
break;
#endif
default:
gen_reserved_instruction(ctx);
break;
}
}
/* dsp */
static void gen_pool32axf_1_5_nanomips_insn(DisasContext *ctx, uint32_t opc,
int ret, int v1, int v2)
{
TCGv_i32 t0;
TCGv v0_t;
TCGv v1_t;
t0 = tcg_temp_new_i32();
v0_t = tcg_temp_new();
v1_t = tcg_temp_new();
tcg_gen_movi_i32(t0, v2 >> 3);
gen_load_gpr(v0_t, ret);
gen_load_gpr(v1_t, v1);
switch (opc) {
case NM_MAQ_S_W_PHR:
check_dsp(ctx);
gen_helper_maq_s_w_phr(t0, v1_t, v0_t, tcg_env);
break;
case NM_MAQ_S_W_PHL:
check_dsp(ctx);
gen_helper_maq_s_w_phl(t0, v1_t, v0_t, tcg_env);
break;
case NM_MAQ_SA_W_PHR:
check_dsp(ctx);
gen_helper_maq_sa_w_phr(t0, v1_t, v0_t, tcg_env);
break;
case NM_MAQ_SA_W_PHL:
check_dsp(ctx);
gen_helper_maq_sa_w_phl(t0, v1_t, v0_t, tcg_env);
break;
default:
gen_reserved_instruction(ctx);
break;
}
}
static void gen_pool32axf_1_nanomips_insn(DisasContext *ctx, uint32_t opc,
int ret, int v1, int v2)
{
int16_t imm;
TCGv t0 = tcg_temp_new();
TCGv v0_t = tcg_temp_new();
gen_load_gpr(v0_t, v1);
switch (opc) {
case NM_POOL32AXF_1_0:
check_dsp(ctx);
switch (extract32(ctx->opcode, 12, 2)) {
case NM_MFHI:
gen_HILO(ctx, OPC_MFHI, v2 >> 3, ret);
break;
case NM_MFLO:
gen_HILO(ctx, OPC_MFLO, v2 >> 3, ret);
break;
case NM_MTHI:
gen_HILO(ctx, OPC_MTHI, v2 >> 3, v1);
break;
case NM_MTLO:
gen_HILO(ctx, OPC_MTLO, v2 >> 3, v1);
break;
}
break;
case NM_POOL32AXF_1_1:
check_dsp(ctx);
switch (extract32(ctx->opcode, 12, 2)) {
case NM_MTHLIP:
gen_helper_mthlip(tcg_constant_tl(v2 >> 3), v0_t, tcg_env);
break;
case NM_SHILOV:
gen_helper_shilo(tcg_constant_tl(v2 >> 3), v0_t, tcg_env);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_POOL32AXF_1_3:
check_dsp(ctx);
imm = extract32(ctx->opcode, 14, 7);
switch (extract32(ctx->opcode, 12, 2)) {
case NM_RDDSP:
gen_helper_rddsp(t0, tcg_constant_tl(imm), tcg_env);
gen_store_gpr(t0, ret);
break;
case NM_WRDSP:
gen_load_gpr(t0, ret);
gen_helper_wrdsp(t0, tcg_constant_tl(imm), tcg_env);
break;
case NM_EXTP:
gen_helper_extp(t0, tcg_constant_tl(v2 >> 3),
tcg_constant_tl(v1), tcg_env);
gen_store_gpr(t0, ret);
break;
case NM_EXTPDP:
gen_helper_extpdp(t0, tcg_constant_tl(v2 >> 3),
tcg_constant_tl(v1), tcg_env);
gen_store_gpr(t0, ret);
break;
}
break;
case NM_POOL32AXF_1_4:
check_dsp(ctx);
switch (extract32(ctx->opcode, 12, 1)) {
case NM_SHLL_QB:
gen_helper_shll_qb(t0, tcg_constant_tl(v2 >> 2), v0_t, tcg_env);
gen_store_gpr(t0, ret);
break;
case NM_SHRL_QB:
gen_helper_shrl_qb(t0, tcg_constant_tl(v2 >> 2), v0_t);
gen_store_gpr(t0, ret);
break;
}
break;
case NM_POOL32AXF_1_5:
opc = extract32(ctx->opcode, 12, 2);
gen_pool32axf_1_5_nanomips_insn(ctx, opc, ret, v1, v2);
break;
case NM_POOL32AXF_1_7:
check_dsp(ctx);
switch (extract32(ctx->opcode, 12, 2)) {
case NM_EXTR_W:
gen_helper_extr_w(t0, tcg_constant_tl(v2 >> 3),
tcg_constant_tl(v1), tcg_env);
gen_store_gpr(t0, ret);
break;
case NM_EXTR_R_W:
gen_helper_extr_r_w(t0, tcg_constant_tl(v2 >> 3),
tcg_constant_tl(v1), tcg_env);
gen_store_gpr(t0, ret);
break;
case NM_EXTR_RS_W:
gen_helper_extr_rs_w(t0, tcg_constant_tl(v2 >> 3),
tcg_constant_tl(v1), tcg_env);
gen_store_gpr(t0, ret);
break;
case NM_EXTR_S_H:
gen_helper_extr_s_h(t0, tcg_constant_tl(v2 >> 3),
tcg_constant_tl(v1), tcg_env);
gen_store_gpr(t0, ret);
break;
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
}
static void gen_pool32axf_2_multiply(DisasContext *ctx, uint32_t opc,
TCGv v0, TCGv v1, int rd)
{
TCGv_i32 t0;
t0 = tcg_temp_new_i32();
tcg_gen_movi_i32(t0, rd >> 3);
switch (opc) {
case NM_POOL32AXF_2_0_7:
switch (extract32(ctx->opcode, 9, 3)) {
case NM_DPA_W_PH:
check_dsp_r2(ctx);
gen_helper_dpa_w_ph(t0, v1, v0, tcg_env);
break;
case NM_DPAQ_S_W_PH:
check_dsp(ctx);
gen_helper_dpaq_s_w_ph(t0, v1, v0, tcg_env);
break;
case NM_DPS_W_PH:
check_dsp_r2(ctx);
gen_helper_dps_w_ph(t0, v1, v0, tcg_env);
break;
case NM_DPSQ_S_W_PH:
check_dsp(ctx);
gen_helper_dpsq_s_w_ph(t0, v1, v0, tcg_env);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_POOL32AXF_2_8_15:
switch (extract32(ctx->opcode, 9, 3)) {
case NM_DPAX_W_PH:
check_dsp_r2(ctx);
gen_helper_dpax_w_ph(t0, v0, v1, tcg_env);
break;
case NM_DPAQ_SA_L_W:
check_dsp(ctx);
gen_helper_dpaq_sa_l_w(t0, v0, v1, tcg_env);
break;
case NM_DPSX_W_PH:
check_dsp_r2(ctx);
gen_helper_dpsx_w_ph(t0, v0, v1, tcg_env);
break;
case NM_DPSQ_SA_L_W:
check_dsp(ctx);
gen_helper_dpsq_sa_l_w(t0, v0, v1, tcg_env);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_POOL32AXF_2_16_23:
switch (extract32(ctx->opcode, 9, 3)) {
case NM_DPAU_H_QBL:
check_dsp(ctx);
gen_helper_dpau_h_qbl(t0, v0, v1, tcg_env);
break;
case NM_DPAQX_S_W_PH:
check_dsp_r2(ctx);
gen_helper_dpaqx_s_w_ph(t0, v0, v1, tcg_env);
break;
case NM_DPSU_H_QBL:
check_dsp(ctx);
gen_helper_dpsu_h_qbl(t0, v0, v1, tcg_env);
break;
case NM_DPSQX_S_W_PH:
check_dsp_r2(ctx);
gen_helper_dpsqx_s_w_ph(t0, v0, v1, tcg_env);
break;
case NM_MULSA_W_PH:
check_dsp_r2(ctx);
gen_helper_mulsa_w_ph(t0, v0, v1, tcg_env);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_POOL32AXF_2_24_31:
switch (extract32(ctx->opcode, 9, 3)) {
case NM_DPAU_H_QBR:
check_dsp(ctx);
gen_helper_dpau_h_qbr(t0, v1, v0, tcg_env);
break;
case NM_DPAQX_SA_W_PH:
check_dsp_r2(ctx);
gen_helper_dpaqx_sa_w_ph(t0, v1, v0, tcg_env);
break;
case NM_DPSU_H_QBR:
check_dsp(ctx);
gen_helper_dpsu_h_qbr(t0, v1, v0, tcg_env);
break;
case NM_DPSQX_SA_W_PH:
check_dsp_r2(ctx);
gen_helper_dpsqx_sa_w_ph(t0, v1, v0, tcg_env);
break;
case NM_MULSAQ_S_W_PH:
check_dsp(ctx);
gen_helper_mulsaq_s_w_ph(t0, v1, v0, tcg_env);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
}
static void gen_pool32axf_2_nanomips_insn(DisasContext *ctx, uint32_t opc,
int rt, int rs, int rd)
{
int ret = rt;
TCGv t0 = tcg_temp_new();
TCGv t1 = tcg_temp_new();
TCGv v0_t = tcg_temp_new();
TCGv v1_t = tcg_temp_new();
gen_load_gpr(v0_t, rt);
gen_load_gpr(v1_t, rs);
switch (opc) {
case NM_POOL32AXF_2_0_7:
switch (extract32(ctx->opcode, 9, 3)) {
case NM_DPA_W_PH:
case NM_DPAQ_S_W_PH:
case NM_DPS_W_PH:
case NM_DPSQ_S_W_PH:
gen_pool32axf_2_multiply(ctx, opc, v0_t, v1_t, rd);
break;
case NM_BALIGN:
check_dsp_r2(ctx);
if (rt != 0) {
gen_load_gpr(t0, rs);
rd &= 3;
if (rd != 0 && rd != 2) {
tcg_gen_shli_tl(cpu_gpr[ret], cpu_gpr[ret], 8 * rd);
tcg_gen_ext32u_tl(t0, t0);
tcg_gen_shri_tl(t0, t0, 8 * (4 - rd));
tcg_gen_or_tl(cpu_gpr[ret], cpu_gpr[ret], t0);
}
tcg_gen_ext32s_tl(cpu_gpr[ret], cpu_gpr[ret]);
}
break;
case NM_MADD:
check_dsp(ctx);
{
int acc = extract32(ctx->opcode, 14, 2);
TCGv_i64 t2 = tcg_temp_new_i64();
TCGv_i64 t3 = tcg_temp_new_i64();
gen_load_gpr(t0, rt);
gen_load_gpr(t1, rs);
tcg_gen_ext_tl_i64(t2, t0);
tcg_gen_ext_tl_i64(t3, t1);
tcg_gen_mul_i64(t2, t2, t3);
tcg_gen_concat_tl_i64(t3, cpu_LO[acc], cpu_HI[acc]);
tcg_gen_add_i64(t2, t2, t3);
gen_move_low32(cpu_LO[acc], t2);
gen_move_high32(cpu_HI[acc], t2);
}
break;
case NM_MULT:
check_dsp(ctx);
{
int acc = extract32(ctx->opcode, 14, 2);
TCGv_i32 t2 = tcg_temp_new_i32();
TCGv_i32 t3 = tcg_temp_new_i32();
if (acc || ctx->insn_flags & ISA_MIPS_R6) {
check_dsp_r2(ctx);
}
gen_load_gpr(t0, rs);
gen_load_gpr(t1, rt);
tcg_gen_trunc_tl_i32(t2, t0);
tcg_gen_trunc_tl_i32(t3, t1);
tcg_gen_muls2_i32(t2, t3, t2, t3);
tcg_gen_ext_i32_tl(cpu_LO[acc], t2);
tcg_gen_ext_i32_tl(cpu_HI[acc], t3);
}
break;
case NM_EXTRV_W:
check_dsp(ctx);
gen_load_gpr(v1_t, rs);
gen_helper_extr_w(t0, tcg_constant_tl(rd >> 3), v1_t, tcg_env);
gen_store_gpr(t0, ret);
break;
}
break;
case NM_POOL32AXF_2_8_15:
switch (extract32(ctx->opcode, 9, 3)) {
case NM_DPAX_W_PH:
case NM_DPAQ_SA_L_W:
case NM_DPSX_W_PH:
case NM_DPSQ_SA_L_W:
gen_pool32axf_2_multiply(ctx, opc, v0_t, v1_t, rd);
break;
case NM_MADDU:
check_dsp(ctx);
{
int acc = extract32(ctx->opcode, 14, 2);
TCGv_i64 t2 = tcg_temp_new_i64();
TCGv_i64 t3 = tcg_temp_new_i64();
gen_load_gpr(t0, rs);
gen_load_gpr(t1, rt);
tcg_gen_ext32u_tl(t0, t0);
tcg_gen_ext32u_tl(t1, t1);
tcg_gen_extu_tl_i64(t2, t0);
tcg_gen_extu_tl_i64(t3, t1);
tcg_gen_mul_i64(t2, t2, t3);
tcg_gen_concat_tl_i64(t3, cpu_LO[acc], cpu_HI[acc]);
tcg_gen_add_i64(t2, t2, t3);
gen_move_low32(cpu_LO[acc], t2);
gen_move_high32(cpu_HI[acc], t2);
}
break;
case NM_MULTU:
check_dsp(ctx);
{
int acc = extract32(ctx->opcode, 14, 2);
TCGv_i32 t2 = tcg_temp_new_i32();
TCGv_i32 t3 = tcg_temp_new_i32();
if (acc || ctx->insn_flags & ISA_MIPS_R6) {
check_dsp_r2(ctx);
}
gen_load_gpr(t0, rs);
gen_load_gpr(t1, rt);
tcg_gen_trunc_tl_i32(t2, t0);
tcg_gen_trunc_tl_i32(t3, t1);
tcg_gen_mulu2_i32(t2, t3, t2, t3);
tcg_gen_ext_i32_tl(cpu_LO[acc], t2);
tcg_gen_ext_i32_tl(cpu_HI[acc], t3);
}
break;
case NM_EXTRV_R_W:
check_dsp(ctx);
gen_helper_extr_r_w(t0, tcg_constant_tl(rd >> 3), v1_t, tcg_env);
gen_store_gpr(t0, ret);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_POOL32AXF_2_16_23:
switch (extract32(ctx->opcode, 9, 3)) {
case NM_DPAU_H_QBL:
case NM_DPAQX_S_W_PH:
case NM_DPSU_H_QBL:
case NM_DPSQX_S_W_PH:
case NM_MULSA_W_PH:
gen_pool32axf_2_multiply(ctx, opc, v0_t, v1_t, rd);
break;
case NM_EXTPV:
check_dsp(ctx);
gen_helper_extp(t0, tcg_constant_tl(rd >> 3), v1_t, tcg_env);
gen_store_gpr(t0, ret);
break;
case NM_MSUB:
check_dsp(ctx);
{
int acc = extract32(ctx->opcode, 14, 2);
TCGv_i64 t2 = tcg_temp_new_i64();
TCGv_i64 t3 = tcg_temp_new_i64();
gen_load_gpr(t0, rs);
gen_load_gpr(t1, rt);
tcg_gen_ext_tl_i64(t2, t0);
tcg_gen_ext_tl_i64(t3, t1);
tcg_gen_mul_i64(t2, t2, t3);
tcg_gen_concat_tl_i64(t3, cpu_LO[acc], cpu_HI[acc]);
tcg_gen_sub_i64(t2, t3, t2);
gen_move_low32(cpu_LO[acc], t2);
gen_move_high32(cpu_HI[acc], t2);
}
break;
case NM_EXTRV_RS_W:
check_dsp(ctx);
gen_helper_extr_rs_w(t0, tcg_constant_tl(rd >> 3), v1_t, tcg_env);
gen_store_gpr(t0, ret);
break;
}
break;
case NM_POOL32AXF_2_24_31:
switch (extract32(ctx->opcode, 9, 3)) {
case NM_DPAU_H_QBR:
case NM_DPAQX_SA_W_PH:
case NM_DPSU_H_QBR:
case NM_DPSQX_SA_W_PH:
case NM_MULSAQ_S_W_PH:
gen_pool32axf_2_multiply(ctx, opc, v0_t, v1_t, rd);
break;
case NM_EXTPDPV:
check_dsp(ctx);
gen_helper_extpdp(t0, tcg_constant_tl(rd >> 3), v1_t, tcg_env);
gen_store_gpr(t0, ret);
break;
case NM_MSUBU:
check_dsp(ctx);
{
int acc = extract32(ctx->opcode, 14, 2);
TCGv_i64 t2 = tcg_temp_new_i64();
TCGv_i64 t3 = tcg_temp_new_i64();
gen_load_gpr(t0, rs);
gen_load_gpr(t1, rt);
tcg_gen_ext32u_tl(t0, t0);
tcg_gen_ext32u_tl(t1, t1);
tcg_gen_extu_tl_i64(t2, t0);
tcg_gen_extu_tl_i64(t3, t1);
tcg_gen_mul_i64(t2, t2, t3);
tcg_gen_concat_tl_i64(t3, cpu_LO[acc], cpu_HI[acc]);
tcg_gen_sub_i64(t2, t3, t2);
gen_move_low32(cpu_LO[acc], t2);
gen_move_high32(cpu_HI[acc], t2);
}
break;
case NM_EXTRV_S_H:
check_dsp(ctx);
gen_helper_extr_s_h(t0, tcg_constant_tl(rd >> 3), v1_t, tcg_env);
gen_store_gpr(t0, ret);
break;
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
}
static void gen_pool32axf_4_nanomips_insn(DisasContext *ctx, uint32_t opc,
int rt, int rs)
{
int ret = rt;
TCGv t0 = tcg_temp_new();
TCGv v0_t = tcg_temp_new();
gen_load_gpr(v0_t, rs);
switch (opc) {
case NM_ABSQ_S_QB:
check_dsp_r2(ctx);
gen_helper_absq_s_qb(v0_t, v0_t, tcg_env);
gen_store_gpr(v0_t, ret);
break;
case NM_ABSQ_S_PH:
check_dsp(ctx);
gen_helper_absq_s_ph(v0_t, v0_t, tcg_env);
gen_store_gpr(v0_t, ret);
break;
case NM_ABSQ_S_W:
check_dsp(ctx);
gen_helper_absq_s_w(v0_t, v0_t, tcg_env);
gen_store_gpr(v0_t, ret);
break;
case NM_PRECEQ_W_PHL:
check_dsp(ctx);
tcg_gen_andi_tl(v0_t, v0_t, 0xFFFF0000);
tcg_gen_ext32s_tl(v0_t, v0_t);
gen_store_gpr(v0_t, ret);
break;
case NM_PRECEQ_W_PHR:
check_dsp(ctx);
tcg_gen_andi_tl(v0_t, v0_t, 0x0000FFFF);
tcg_gen_shli_tl(v0_t, v0_t, 16);
tcg_gen_ext32s_tl(v0_t, v0_t);
gen_store_gpr(v0_t, ret);
break;
case NM_PRECEQU_PH_QBL:
check_dsp(ctx);
gen_helper_precequ_ph_qbl(v0_t, v0_t);
gen_store_gpr(v0_t, ret);
break;
case NM_PRECEQU_PH_QBR:
check_dsp(ctx);
gen_helper_precequ_ph_qbr(v0_t, v0_t);
gen_store_gpr(v0_t, ret);
break;
case NM_PRECEQU_PH_QBLA:
check_dsp(ctx);
gen_helper_precequ_ph_qbla(v0_t, v0_t);
gen_store_gpr(v0_t, ret);
break;
case NM_PRECEQU_PH_QBRA:
check_dsp(ctx);
gen_helper_precequ_ph_qbra(v0_t, v0_t);
gen_store_gpr(v0_t, ret);
break;
case NM_PRECEU_PH_QBL:
check_dsp(ctx);
gen_helper_preceu_ph_qbl(v0_t, v0_t);
gen_store_gpr(v0_t, ret);
break;
case NM_PRECEU_PH_QBR:
check_dsp(ctx);
gen_helper_preceu_ph_qbr(v0_t, v0_t);
gen_store_gpr(v0_t, ret);
break;
case NM_PRECEU_PH_QBLA:
check_dsp(ctx);
gen_helper_preceu_ph_qbla(v0_t, v0_t);
gen_store_gpr(v0_t, ret);
break;
case NM_PRECEU_PH_QBRA:
check_dsp(ctx);
gen_helper_preceu_ph_qbra(v0_t, v0_t);
gen_store_gpr(v0_t, ret);
break;
case NM_REPLV_PH:
check_dsp(ctx);
tcg_gen_ext16u_tl(v0_t, v0_t);
tcg_gen_shli_tl(t0, v0_t, 16);
tcg_gen_or_tl(v0_t, v0_t, t0);
tcg_gen_ext32s_tl(v0_t, v0_t);
gen_store_gpr(v0_t, ret);
break;
case NM_REPLV_QB:
check_dsp(ctx);
tcg_gen_ext8u_tl(v0_t, v0_t);
tcg_gen_shli_tl(t0, v0_t, 8);
tcg_gen_or_tl(v0_t, v0_t, t0);
tcg_gen_shli_tl(t0, v0_t, 16);
tcg_gen_or_tl(v0_t, v0_t, t0);
tcg_gen_ext32s_tl(v0_t, v0_t);
gen_store_gpr(v0_t, ret);
break;
case NM_BITREV:
check_dsp(ctx);
gen_helper_bitrev(v0_t, v0_t);
gen_store_gpr(v0_t, ret);
break;
case NM_INSV:
check_dsp(ctx);
{
TCGv tv0 = tcg_temp_new();
gen_load_gpr(tv0, rt);
gen_helper_insv(v0_t, tcg_env, v0_t, tv0);
gen_store_gpr(v0_t, ret);
}
break;
case NM_RADDU_W_QB:
check_dsp(ctx);
gen_helper_raddu_w_qb(v0_t, v0_t);
gen_store_gpr(v0_t, ret);
break;
case NM_BITSWAP:
gen_bitswap(ctx, OPC_BITSWAP, ret, rs);
break;
case NM_CLO:
check_nms(ctx);
gen_cl(ctx, OPC_CLO, ret, rs);
break;
case NM_CLZ:
check_nms(ctx);
gen_cl(ctx, OPC_CLZ, ret, rs);
break;
case NM_WSBH:
gen_bshfl(ctx, OPC_WSBH, ret, rs);
break;
default:
gen_reserved_instruction(ctx);
break;
}
}
static void gen_pool32axf_7_nanomips_insn(DisasContext *ctx, uint32_t opc,
int rt, int rs, int rd)
{
TCGv t0 = tcg_temp_new();
TCGv rs_t = tcg_temp_new();
gen_load_gpr(rs_t, rs);
switch (opc) {
case NM_SHRA_R_QB:
check_dsp_r2(ctx);
switch (extract32(ctx->opcode, 12, 1)) {
case 0:
/* NM_SHRA_QB */
gen_helper_shra_qb(t0, tcg_constant_tl(rd >> 2), rs_t);
gen_store_gpr(t0, rt);
break;
case 1:
/* NM_SHRA_R_QB */
gen_helper_shra_r_qb(t0, tcg_constant_tl(rd >> 2), rs_t);
gen_store_gpr(t0, rt);
break;
}
break;
case NM_SHRL_PH:
check_dsp_r2(ctx);
gen_helper_shrl_ph(t0, tcg_constant_tl(rd >> 1), rs_t);
gen_store_gpr(t0, rt);
break;
case NM_REPL_QB:
check_dsp(ctx);
{
int16_t imm;
target_long result;
imm = extract32(ctx->opcode, 13, 8);
result = (uint32_t)imm << 24 |
(uint32_t)imm << 16 |
(uint32_t)imm << 8 |
(uint32_t)imm;
result = (int32_t)result;
gen_store_gpr(tcg_constant_tl(result), rt);
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
}
static void gen_pool32axf_nanomips_insn(CPUMIPSState *env, DisasContext *ctx)
{
int rt = extract32(ctx->opcode, 21, 5);
int rs = extract32(ctx->opcode, 16, 5);
int rd = extract32(ctx->opcode, 11, 5);
switch (extract32(ctx->opcode, 6, 3)) {
case NM_POOL32AXF_1:
{
int32_t op1 = extract32(ctx->opcode, 9, 3);
gen_pool32axf_1_nanomips_insn(ctx, op1, rt, rs, rd);
}
break;
case NM_POOL32AXF_2:
{
int32_t op1 = extract32(ctx->opcode, 12, 2);
gen_pool32axf_2_nanomips_insn(ctx, op1, rt, rs, rd);
}
break;
case NM_POOL32AXF_4:
{
int32_t op1 = extract32(ctx->opcode, 9, 7);
gen_pool32axf_4_nanomips_insn(ctx, op1, rt, rs);
}
break;
case NM_POOL32AXF_5:
switch (extract32(ctx->opcode, 9, 7)) {
#ifndef CONFIG_USER_ONLY
case NM_TLBP:
gen_cp0(env, ctx, OPC_TLBP, 0, 0);
break;
case NM_TLBR:
gen_cp0(env, ctx, OPC_TLBR, 0, 0);
break;
case NM_TLBWI:
gen_cp0(env, ctx, OPC_TLBWI, 0, 0);
break;
case NM_TLBWR:
gen_cp0(env, ctx, OPC_TLBWR, 0, 0);
break;
case NM_TLBINV:
gen_cp0(env, ctx, OPC_TLBINV, 0, 0);
break;
case NM_TLBINVF:
gen_cp0(env, ctx, OPC_TLBINVF, 0, 0);
break;
case NM_DI:
check_cp0_enabled(ctx);
{
TCGv t0 = tcg_temp_new();
save_cpu_state(ctx, 1);
gen_helper_di(t0, tcg_env);
gen_store_gpr(t0, rt);
/* Stop translation as we may have switched the execution mode */
ctx->base.is_jmp = DISAS_STOP;
}
break;
case NM_EI:
check_cp0_enabled(ctx);
{
TCGv t0 = tcg_temp_new();
save_cpu_state(ctx, 1);
gen_helper_ei(t0, tcg_env);
gen_store_gpr(t0, rt);
/* Stop translation as we may have switched the execution mode */
ctx->base.is_jmp = DISAS_STOP;
}
break;
case NM_RDPGPR:
check_cp0_enabled(ctx);
gen_load_srsgpr(rs, rt);
break;
case NM_WRPGPR:
check_cp0_enabled(ctx);
gen_store_srsgpr(rs, rt);
break;
case NM_WAIT:
gen_cp0(env, ctx, OPC_WAIT, 0, 0);
break;
case NM_DERET:
gen_cp0(env, ctx, OPC_DERET, 0, 0);
break;
case NM_ERETX:
gen_cp0(env, ctx, OPC_ERET, 0, 0);
break;
#endif
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_POOL32AXF_7:
{
int32_t op1 = extract32(ctx->opcode, 9, 3);
gen_pool32axf_7_nanomips_insn(ctx, op1, rt, rs, rd);
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
}
/* Immediate Value Compact Branches */
static void gen_compute_imm_branch(DisasContext *ctx, uint32_t opc,
int rt, int32_t imm, int32_t offset)
{
TCGCond cond = TCG_COND_ALWAYS;
TCGv t0 = tcg_temp_new();
TCGv timm = tcg_constant_tl(imm);
gen_load_gpr(t0, rt);
ctx->btarget = addr_add(ctx, ctx->base.pc_next + 4, offset);
/* Load needed operands and calculate btarget */
switch (opc) {
case NM_BEQIC:
if (rt == 0 && imm == 0) {
/* Unconditional branch */
} else if (rt == 0 && imm != 0) {
/* Treat as NOP */
return;
} else {
cond = TCG_COND_EQ;
}
break;
case NM_BBEQZC:
case NM_BBNEZC:
check_nms(ctx);
if (imm >= 32 && !(ctx->hflags & MIPS_HFLAG_64)) {
gen_reserved_instruction(ctx);
return;
} else if (rt == 0 && opc == NM_BBEQZC) {
/* Unconditional branch */
} else if (rt == 0 && opc == NM_BBNEZC) {
/* Treat as NOP */
return;
} else {
tcg_gen_shri_tl(t0, t0, imm);
tcg_gen_andi_tl(t0, t0, 1);
timm = tcg_constant_tl(0);
if (opc == NM_BBEQZC) {
cond = TCG_COND_EQ;
} else {
cond = TCG_COND_NE;
}
}
break;
case NM_BNEIC:
if (rt == 0 && imm == 0) {
/* Treat as NOP */
return;
} else if (rt == 0 && imm != 0) {
/* Unconditional branch */
} else {
cond = TCG_COND_NE;
}
break;
case NM_BGEIC:
if (rt == 0 && imm == 0) {
/* Unconditional branch */
} else {
cond = TCG_COND_GE;
}
break;
case NM_BLTIC:
cond = TCG_COND_LT;
break;
case NM_BGEIUC:
if (rt == 0 && imm == 0) {
/* Unconditional branch */
} else {
cond = TCG_COND_GEU;
}
break;
case NM_BLTIUC:
cond = TCG_COND_LTU;
break;
default:
MIPS_INVAL("Immediate Value Compact branch");
gen_reserved_instruction(ctx);
return;
}
/* branch completion */
clear_branch_hflags(ctx);
ctx->base.is_jmp = DISAS_NORETURN;
if (cond == TCG_COND_ALWAYS) {
/* Uncoditional compact branch */
gen_goto_tb(ctx, 0, ctx->btarget);
} else {
/* Conditional compact branch */
TCGLabel *fs = gen_new_label();
tcg_gen_brcond_tl(tcg_invert_cond(cond), t0, timm, fs);
gen_goto_tb(ctx, 1, ctx->btarget);
gen_set_label(fs);
gen_goto_tb(ctx, 0, ctx->base.pc_next + 4);
}
}
/* P.BALRSC type nanoMIPS R6 branches: BALRSC and BRSC */
static void gen_compute_nanomips_pbalrsc_branch(DisasContext *ctx, int rs,
int rt)
{
TCGv t0 = tcg_temp_new();
/* load rs */
gen_load_gpr(t0, rs);
/* link */
if (rt != 0) {
tcg_gen_movi_tl(cpu_gpr[rt], ctx->base.pc_next + 4);
}
/* calculate btarget */
tcg_gen_shli_tl(t0, t0, 1);
gen_op_addr_add(ctx, btarget, tcg_constant_tl(ctx->base.pc_next + 4), t0);
/* branch completion */
clear_branch_hflags(ctx);
ctx->base.is_jmp = DISAS_NORETURN;
/* unconditional branch to register */
tcg_gen_mov_tl(cpu_PC, btarget);
tcg_gen_lookup_and_goto_ptr();
}
/* nanoMIPS Branches */
static void gen_compute_compact_branch_nm(DisasContext *ctx, uint32_t opc,
int rs, int rt, int32_t offset)
{
int bcond_compute = 0;
TCGv t0 = tcg_temp_new();
TCGv t1 = tcg_temp_new();
/* Load needed operands and calculate btarget */
switch (opc) {
/* compact branch */
case OPC_BGEC:
case OPC_BLTC:
gen_load_gpr(t0, rs);
gen_load_gpr(t1, rt);
bcond_compute = 1;
ctx->btarget = addr_add(ctx, ctx->base.pc_next + 4, offset);
break;
case OPC_BGEUC:
case OPC_BLTUC:
if (rs == 0 || rs == rt) {
/* OPC_BLEZALC, OPC_BGEZALC */
/* OPC_BGTZALC, OPC_BLTZALC */
tcg_gen_movi_tl(cpu_gpr[31], ctx->base.pc_next + 4);
}
gen_load_gpr(t0, rs);
gen_load_gpr(t1, rt);
bcond_compute = 1;
ctx->btarget = addr_add(ctx, ctx->base.pc_next + 4, offset);
break;
case OPC_BC:
ctx->btarget = addr_add(ctx, ctx->base.pc_next + 4, offset);
break;
case OPC_BEQZC:
if (rs != 0) {
/* OPC_BEQZC, OPC_BNEZC */
gen_load_gpr(t0, rs);
bcond_compute = 1;
ctx->btarget = addr_add(ctx, ctx->base.pc_next + 4, offset);
} else {
/* OPC_JIC, OPC_JIALC */
TCGv tbase = tcg_temp_new();
gen_load_gpr(tbase, rt);
gen_op_addr_addi(ctx, btarget, tbase, offset);
}
break;
default:
MIPS_INVAL("Compact branch/jump");
gen_reserved_instruction(ctx);
return;
}
if (bcond_compute == 0) {
/* Uncoditional compact branch */
switch (opc) {
case OPC_BC:
gen_goto_tb(ctx, 0, ctx->btarget);
break;
default:
MIPS_INVAL("Compact branch/jump");
gen_reserved_instruction(ctx);
return;
}
} else {
/* Conditional compact branch */
TCGLabel *fs = gen_new_label();
switch (opc) {
case OPC_BGEUC:
if (rs == 0 && rt != 0) {
/* OPC_BLEZALC */
tcg_gen_brcondi_tl(tcg_invert_cond(TCG_COND_LE), t1, 0, fs);
} else if (rs != 0 && rt != 0 && rs == rt) {
/* OPC_BGEZALC */
tcg_gen_brcondi_tl(tcg_invert_cond(TCG_COND_GE), t1, 0, fs);
} else {
/* OPC_BGEUC */
tcg_gen_brcond_tl(tcg_invert_cond(TCG_COND_GEU), t0, t1, fs);
}
break;
case OPC_BLTUC:
if (rs == 0 && rt != 0) {
/* OPC_BGTZALC */
tcg_gen_brcondi_tl(tcg_invert_cond(TCG_COND_GT), t1, 0, fs);
} else if (rs != 0 && rt != 0 && rs == rt) {
/* OPC_BLTZALC */
tcg_gen_brcondi_tl(tcg_invert_cond(TCG_COND_LT), t1, 0, fs);
} else {
/* OPC_BLTUC */
tcg_gen_brcond_tl(tcg_invert_cond(TCG_COND_LTU), t0, t1, fs);
}
break;
case OPC_BGEC:
if (rs == 0 && rt != 0) {
/* OPC_BLEZC */
tcg_gen_brcondi_tl(tcg_invert_cond(TCG_COND_LE), t1, 0, fs);
} else if (rs != 0 && rt != 0 && rs == rt) {
/* OPC_BGEZC */
tcg_gen_brcondi_tl(tcg_invert_cond(TCG_COND_GE), t1, 0, fs);
} else {
/* OPC_BGEC */
tcg_gen_brcond_tl(tcg_invert_cond(TCG_COND_GE), t0, t1, fs);
}
break;
case OPC_BLTC:
if (rs == 0 && rt != 0) {
/* OPC_BGTZC */
tcg_gen_brcondi_tl(tcg_invert_cond(TCG_COND_GT), t1, 0, fs);
} else if (rs != 0 && rt != 0 && rs == rt) {
/* OPC_BLTZC */
tcg_gen_brcondi_tl(tcg_invert_cond(TCG_COND_LT), t1, 0, fs);
} else {
/* OPC_BLTC */
tcg_gen_brcond_tl(tcg_invert_cond(TCG_COND_LT), t0, t1, fs);
}
break;
case OPC_BEQZC:
tcg_gen_brcondi_tl(tcg_invert_cond(TCG_COND_EQ), t0, 0, fs);
break;
default:
MIPS_INVAL("Compact conditional branch/jump");
gen_reserved_instruction(ctx);
return;
}
/* branch completion */
clear_branch_hflags(ctx);
ctx->base.is_jmp = DISAS_NORETURN;
/* Generating branch here as compact branches don't have delay slot */
gen_goto_tb(ctx, 1, ctx->btarget);
gen_set_label(fs);
gen_goto_tb(ctx, 0, ctx->base.pc_next + 4);
}
}
/* nanoMIPS CP1 Branches */
static void gen_compute_branch_cp1_nm(DisasContext *ctx, uint32_t op,
int32_t ft, int32_t offset)
{
target_ulong btarget;
TCGv_i64 t0 = tcg_temp_new_i64();
gen_load_fpr64(ctx, t0, ft);
tcg_gen_andi_i64(t0, t0, 1);
btarget = addr_add(ctx, ctx->base.pc_next + 4, offset);
switch (op) {
case NM_BC1EQZC:
tcg_gen_xori_i64(t0, t0, 1);
ctx->hflags |= MIPS_HFLAG_BC;
break;
case NM_BC1NEZC:
/* t0 already set */
ctx->hflags |= MIPS_HFLAG_BC;
break;
default:
MIPS_INVAL("cp1 cond branch");
gen_reserved_instruction(ctx);
return;
}
tcg_gen_trunc_i64_tl(bcond, t0);
ctx->btarget = btarget;
}
static void gen_p_lsx(DisasContext *ctx, int rd, int rs, int rt)
{
TCGv t0, t1;
t0 = tcg_temp_new();
t1 = tcg_temp_new();
gen_load_gpr(t0, rs);
gen_load_gpr(t1, rt);
if ((extract32(ctx->opcode, 6, 1)) == 1) {
/* PP.LSXS instructions require shifting */
switch (extract32(ctx->opcode, 7, 4)) {
case NM_SHXS:
check_nms(ctx);
/* fall through */
case NM_LHXS:
case NM_LHUXS:
tcg_gen_shli_tl(t0, t0, 1);
break;
case NM_SWXS:
check_nms(ctx);
/* fall through */
case NM_LWXS:
case NM_LWC1XS:
case NM_SWC1XS:
tcg_gen_shli_tl(t0, t0, 2);
break;
case NM_LDC1XS:
case NM_SDC1XS:
tcg_gen_shli_tl(t0, t0, 3);
break;
default:
gen_reserved_instruction(ctx);
return;
}
}
gen_op_addr_add(ctx, t0, t0, t1);
switch (extract32(ctx->opcode, 7, 4)) {
case NM_LBX:
tcg_gen_qemu_ld_tl(t0, t0, ctx->mem_idx, MO_SB);
gen_store_gpr(t0, rd);
break;
case NM_LHX:
/*case NM_LHXS:*/
tcg_gen_qemu_ld_tl(t0, t0, ctx->mem_idx,
mo_endian(ctx) | MO_SW | ctx->default_tcg_memop_mask);
gen_store_gpr(t0, rd);
break;
case NM_LWX:
/*case NM_LWXS:*/
tcg_gen_qemu_ld_tl(t0, t0, ctx->mem_idx,
mo_endian(ctx) | MO_SL | ctx->default_tcg_memop_mask);
gen_store_gpr(t0, rd);
break;
case NM_LBUX:
tcg_gen_qemu_ld_tl(t0, t0, ctx->mem_idx, MO_UB);
gen_store_gpr(t0, rd);
break;
case NM_LHUX:
/*case NM_LHUXS:*/
tcg_gen_qemu_ld_tl(t0, t0, ctx->mem_idx,
mo_endian(ctx) | MO_UW | ctx->default_tcg_memop_mask);
gen_store_gpr(t0, rd);
break;
case NM_SBX:
check_nms(ctx);
gen_load_gpr(t1, rd);
tcg_gen_qemu_st_tl(t1, t0, ctx->mem_idx, MO_8);
break;
case NM_SHX:
/*case NM_SHXS:*/
check_nms(ctx);
gen_load_gpr(t1, rd);
tcg_gen_qemu_st_tl(t1, t0, ctx->mem_idx,
mo_endian(ctx) | MO_UW | ctx->default_tcg_memop_mask);
break;
case NM_SWX:
/*case NM_SWXS:*/
check_nms(ctx);
gen_load_gpr(t1, rd);
tcg_gen_qemu_st_tl(t1, t0, ctx->mem_idx,
mo_endian(ctx) | MO_UL | ctx->default_tcg_memop_mask);
break;
case NM_LWC1X:
/*case NM_LWC1XS:*/
case NM_LDC1X:
/*case NM_LDC1XS:*/
case NM_SWC1X:
/*case NM_SWC1XS:*/
case NM_SDC1X:
/*case NM_SDC1XS:*/
if (ctx->CP0_Config1 & (1 << CP0C1_FP)) {
check_cp1_enabled(ctx);
switch (extract32(ctx->opcode, 7, 4)) {
case NM_LWC1X:
/*case NM_LWC1XS:*/
gen_flt_ldst(ctx, OPC_LWC1, rd, t0);
break;
case NM_LDC1X:
/*case NM_LDC1XS:*/
gen_flt_ldst(ctx, OPC_LDC1, rd, t0);
break;
case NM_SWC1X:
/*case NM_SWC1XS:*/
gen_flt_ldst(ctx, OPC_SWC1, rd, t0);
break;
case NM_SDC1X:
/*case NM_SDC1XS:*/
gen_flt_ldst(ctx, OPC_SDC1, rd, t0);
break;
}
} else {
generate_exception_err(ctx, EXCP_CpU, 1);
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
}
static void gen_pool32f_nanomips_insn(DisasContext *ctx)
{
int rt, rs, rd;
rt = extract32(ctx->opcode, 21, 5);
rs = extract32(ctx->opcode, 16, 5);
rd = extract32(ctx->opcode, 11, 5);
if (!(ctx->CP0_Config1 & (1 << CP0C1_FP))) {
gen_reserved_instruction(ctx);
return;
}
check_cp1_enabled(ctx);
switch (extract32(ctx->opcode, 0, 3)) {
case NM_POOL32F_0:
switch (extract32(ctx->opcode, 3, 7)) {
case NM_RINT_S:
gen_farith(ctx, OPC_RINT_S, 0, rt, rs, 0);
break;
case NM_RINT_D:
gen_farith(ctx, OPC_RINT_D, 0, rt, rs, 0);
break;
case NM_CLASS_S:
gen_farith(ctx, OPC_CLASS_S, 0, rt, rs, 0);
break;
case NM_CLASS_D:
gen_farith(ctx, OPC_CLASS_D, 0, rt, rs, 0);
break;
case NM_ADD_S:
gen_farith(ctx, OPC_ADD_S, rt, rs, rd, 0);
break;
case NM_ADD_D:
gen_farith(ctx, OPC_ADD_D, rt, rs, rd, 0);
break;
case NM_SUB_S:
gen_farith(ctx, OPC_SUB_S, rt, rs, rd, 0);
break;
case NM_SUB_D:
gen_farith(ctx, OPC_SUB_D, rt, rs, rd, 0);
break;
case NM_MUL_S:
gen_farith(ctx, OPC_MUL_S, rt, rs, rd, 0);
break;
case NM_MUL_D:
gen_farith(ctx, OPC_MUL_D, rt, rs, rd, 0);
break;
case NM_DIV_S:
gen_farith(ctx, OPC_DIV_S, rt, rs, rd, 0);
break;
case NM_DIV_D:
gen_farith(ctx, OPC_DIV_D, rt, rs, rd, 0);
break;
case NM_SELEQZ_S:
gen_sel_s(ctx, OPC_SELEQZ_S, rd, rt, rs);
break;
case NM_SELEQZ_D:
gen_sel_d(ctx, OPC_SELEQZ_D, rd, rt, rs);
break;
case NM_SELNEZ_S:
gen_sel_s(ctx, OPC_SELNEZ_S, rd, rt, rs);
break;
case NM_SELNEZ_D:
gen_sel_d(ctx, OPC_SELNEZ_D, rd, rt, rs);
break;
case NM_SEL_S:
gen_sel_s(ctx, OPC_SEL_S, rd, rt, rs);
break;
case NM_SEL_D:
gen_sel_d(ctx, OPC_SEL_D, rd, rt, rs);
break;
case NM_MADDF_S:
gen_farith(ctx, OPC_MADDF_S, rt, rs, rd, 0);
break;
case NM_MADDF_D:
gen_farith(ctx, OPC_MADDF_D, rt, rs, rd, 0);
break;
case NM_MSUBF_S:
gen_farith(ctx, OPC_MSUBF_S, rt, rs, rd, 0);
break;
case NM_MSUBF_D:
gen_farith(ctx, OPC_MSUBF_D, rt, rs, rd, 0);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_POOL32F_3:
switch (extract32(ctx->opcode, 3, 3)) {
case NM_MIN_FMT:
switch (extract32(ctx->opcode, 9, 1)) {
case FMT_SDPS_S:
gen_farith(ctx, OPC_MIN_S, rt, rs, rd, 0);
break;
case FMT_SDPS_D:
gen_farith(ctx, OPC_MIN_D, rt, rs, rd, 0);
break;
}
break;
case NM_MAX_FMT:
switch (extract32(ctx->opcode, 9, 1)) {
case FMT_SDPS_S:
gen_farith(ctx, OPC_MAX_S, rt, rs, rd, 0);
break;
case FMT_SDPS_D:
gen_farith(ctx, OPC_MAX_D, rt, rs, rd, 0);
break;
}
break;
case NM_MINA_FMT:
switch (extract32(ctx->opcode, 9, 1)) {
case FMT_SDPS_S:
gen_farith(ctx, OPC_MINA_S, rt, rs, rd, 0);
break;
case FMT_SDPS_D:
gen_farith(ctx, OPC_MINA_D, rt, rs, rd, 0);
break;
}
break;
case NM_MAXA_FMT:
switch (extract32(ctx->opcode, 9, 1)) {
case FMT_SDPS_S:
gen_farith(ctx, OPC_MAXA_S, rt, rs, rd, 0);
break;
case FMT_SDPS_D:
gen_farith(ctx, OPC_MAXA_D, rt, rs, rd, 0);
break;
}
break;
case NM_POOL32FXF:
switch (extract32(ctx->opcode, 6, 8)) {
case NM_CFC1:
gen_cp1(ctx, OPC_CFC1, rt, rs);
break;
case NM_CTC1:
gen_cp1(ctx, OPC_CTC1, rt, rs);
break;
case NM_MFC1:
gen_cp1(ctx, OPC_MFC1, rt, rs);
break;
case NM_MTC1:
gen_cp1(ctx, OPC_MTC1, rt, rs);
break;
case NM_MFHC1:
gen_cp1(ctx, OPC_MFHC1, rt, rs);
break;
case NM_MTHC1:
gen_cp1(ctx, OPC_MTHC1, rt, rs);
break;
case NM_CVT_S_PL:
gen_farith(ctx, OPC_CVT_S_PL, -1, rs, rt, 0);
break;
case NM_CVT_S_PU:
gen_farith(ctx, OPC_CVT_S_PU, -1, rs, rt, 0);
break;
default:
switch (extract32(ctx->opcode, 6, 9)) {
case NM_CVT_L_S:
gen_farith(ctx, OPC_CVT_L_S, -1, rs, rt, 0);
break;
case NM_CVT_L_D:
gen_farith(ctx, OPC_CVT_L_D, -1, rs, rt, 0);
break;
case NM_CVT_W_S:
gen_farith(ctx, OPC_CVT_W_S, -1, rs, rt, 0);
break;
case NM_CVT_W_D:
gen_farith(ctx, OPC_CVT_W_D, -1, rs, rt, 0);
break;
case NM_RSQRT_S:
gen_farith(ctx, OPC_RSQRT_S, -1, rs, rt, 0);
break;
case NM_RSQRT_D:
gen_farith(ctx, OPC_RSQRT_D, -1, rs, rt, 0);
break;
case NM_SQRT_S:
gen_farith(ctx, OPC_SQRT_S, -1, rs, rt, 0);
break;
case NM_SQRT_D:
gen_farith(ctx, OPC_SQRT_D, -1, rs, rt, 0);
break;
case NM_RECIP_S:
gen_farith(ctx, OPC_RECIP_S, -1, rs, rt, 0);
break;
case NM_RECIP_D:
gen_farith(ctx, OPC_RECIP_D, -1, rs, rt, 0);
break;
case NM_FLOOR_L_S:
gen_farith(ctx, OPC_FLOOR_L_S, -1, rs, rt, 0);
break;
case NM_FLOOR_L_D:
gen_farith(ctx, OPC_FLOOR_L_D, -1, rs, rt, 0);
break;
case NM_FLOOR_W_S:
gen_farith(ctx, OPC_FLOOR_W_S, -1, rs, rt, 0);
break;
case NM_FLOOR_W_D:
gen_farith(ctx, OPC_FLOOR_W_D, -1, rs, rt, 0);
break;
case NM_CEIL_L_S:
gen_farith(ctx, OPC_CEIL_L_S, -1, rs, rt, 0);
break;
case NM_CEIL_L_D:
gen_farith(ctx, OPC_CEIL_L_D, -1, rs, rt, 0);
break;
case NM_CEIL_W_S:
gen_farith(ctx, OPC_CEIL_W_S, -1, rs, rt, 0);
break;
case NM_CEIL_W_D:
gen_farith(ctx, OPC_CEIL_W_D, -1, rs, rt, 0);
break;
case NM_TRUNC_L_S:
gen_farith(ctx, OPC_TRUNC_L_S, -1, rs, rt, 0);
break;
case NM_TRUNC_L_D:
gen_farith(ctx, OPC_TRUNC_L_D, -1, rs, rt, 0);
break;
case NM_TRUNC_W_S:
gen_farith(ctx, OPC_TRUNC_W_S, -1, rs, rt, 0);
break;
case NM_TRUNC_W_D:
gen_farith(ctx, OPC_TRUNC_W_D, -1, rs, rt, 0);
break;
case NM_ROUND_L_S:
gen_farith(ctx, OPC_ROUND_L_S, -1, rs, rt, 0);
break;
case NM_ROUND_L_D:
gen_farith(ctx, OPC_ROUND_L_D, -1, rs, rt, 0);
break;
case NM_ROUND_W_S:
gen_farith(ctx, OPC_ROUND_W_S, -1, rs, rt, 0);
break;
case NM_ROUND_W_D:
gen_farith(ctx, OPC_ROUND_W_D, -1, rs, rt, 0);
break;
case NM_MOV_S:
gen_farith(ctx, OPC_MOV_S, -1, rs, rt, 0);
break;
case NM_MOV_D:
gen_farith(ctx, OPC_MOV_D, -1, rs, rt, 0);
break;
case NM_ABS_S:
gen_farith(ctx, OPC_ABS_S, -1, rs, rt, 0);
break;
case NM_ABS_D:
gen_farith(ctx, OPC_ABS_D, -1, rs, rt, 0);
break;
case NM_NEG_S:
gen_farith(ctx, OPC_NEG_S, -1, rs, rt, 0);
break;
case NM_NEG_D:
gen_farith(ctx, OPC_NEG_D, -1, rs, rt, 0);
break;
case NM_CVT_D_S:
gen_farith(ctx, OPC_CVT_D_S, -1, rs, rt, 0);
break;
case NM_CVT_D_W:
gen_farith(ctx, OPC_CVT_D_W, -1, rs, rt, 0);
break;
case NM_CVT_D_L:
gen_farith(ctx, OPC_CVT_D_L, -1, rs, rt, 0);
break;
case NM_CVT_S_D:
gen_farith(ctx, OPC_CVT_S_D, -1, rs, rt, 0);
break;
case NM_CVT_S_W:
gen_farith(ctx, OPC_CVT_S_W, -1, rs, rt, 0);
break;
case NM_CVT_S_L:
gen_farith(ctx, OPC_CVT_S_L, -1, rs, rt, 0);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
}
break;
}
break;
case NM_POOL32F_5:
switch (extract32(ctx->opcode, 3, 3)) {
case NM_CMP_CONDN_S:
gen_r6_cmp_s(ctx, extract32(ctx->opcode, 6, 5), rt, rs, rd);
break;
case NM_CMP_CONDN_D:
gen_r6_cmp_d(ctx, extract32(ctx->opcode, 6, 5), rt, rs, rd);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
}
static void gen_pool32a5_nanomips_insn(DisasContext *ctx, int opc,
int rd, int rs, int rt)
{
int ret = rd;
TCGv t0 = tcg_temp_new();
TCGv v1_t = tcg_temp_new();
TCGv v2_t = tcg_temp_new();
gen_load_gpr(v1_t, rs);
gen_load_gpr(v2_t, rt);
switch (opc) {
case NM_CMP_EQ_PH:
check_dsp(ctx);
gen_helper_cmp_eq_ph(v1_t, v2_t, tcg_env);
break;
case NM_CMP_LT_PH:
check_dsp(ctx);
gen_helper_cmp_lt_ph(v1_t, v2_t, tcg_env);
break;
case NM_CMP_LE_PH:
check_dsp(ctx);
gen_helper_cmp_le_ph(v1_t, v2_t, tcg_env);
break;
case NM_CMPU_EQ_QB:
check_dsp(ctx);
gen_helper_cmpu_eq_qb(v1_t, v2_t, tcg_env);
break;
case NM_CMPU_LT_QB:
check_dsp(ctx);
gen_helper_cmpu_lt_qb(v1_t, v2_t, tcg_env);
break;
case NM_CMPU_LE_QB:
check_dsp(ctx);
gen_helper_cmpu_le_qb(v1_t, v2_t, tcg_env);
break;
case NM_CMPGU_EQ_QB:
check_dsp(ctx);
gen_helper_cmpgu_eq_qb(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case NM_CMPGU_LT_QB:
check_dsp(ctx);
gen_helper_cmpgu_lt_qb(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case NM_CMPGU_LE_QB:
check_dsp(ctx);
gen_helper_cmpgu_le_qb(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case NM_CMPGDU_EQ_QB:
check_dsp_r2(ctx);
gen_helper_cmpgu_eq_qb(v1_t, v1_t, v2_t);
tcg_gen_deposit_tl(cpu_dspctrl, cpu_dspctrl, v1_t, 24, 4);
gen_store_gpr(v1_t, ret);
break;
case NM_CMPGDU_LT_QB:
check_dsp_r2(ctx);
gen_helper_cmpgu_lt_qb(v1_t, v1_t, v2_t);
tcg_gen_deposit_tl(cpu_dspctrl, cpu_dspctrl, v1_t, 24, 4);
gen_store_gpr(v1_t, ret);
break;
case NM_CMPGDU_LE_QB:
check_dsp_r2(ctx);
gen_helper_cmpgu_le_qb(v1_t, v1_t, v2_t);
tcg_gen_deposit_tl(cpu_dspctrl, cpu_dspctrl, v1_t, 24, 4);
gen_store_gpr(v1_t, ret);
break;
case NM_PACKRL_PH:
check_dsp(ctx);
gen_helper_packrl_ph(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case NM_PICK_QB:
check_dsp(ctx);
gen_helper_pick_qb(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case NM_PICK_PH:
check_dsp(ctx);
gen_helper_pick_ph(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case NM_ADDQ_S_W:
check_dsp(ctx);
gen_helper_addq_s_w(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case NM_SUBQ_S_W:
check_dsp(ctx);
gen_helper_subq_s_w(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case NM_ADDSC:
check_dsp(ctx);
gen_helper_addsc(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case NM_ADDWC:
check_dsp(ctx);
gen_helper_addwc(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case NM_ADDQ_S_PH:
check_dsp(ctx);
switch (extract32(ctx->opcode, 10, 1)) {
case 0:
/* ADDQ_PH */
gen_helper_addq_ph(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case 1:
/* ADDQ_S_PH */
gen_helper_addq_s_ph(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
}
break;
case NM_ADDQH_R_PH:
check_dsp_r2(ctx);
switch (extract32(ctx->opcode, 10, 1)) {
case 0:
/* ADDQH_PH */
gen_helper_addqh_ph(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case 1:
/* ADDQH_R_PH */
gen_helper_addqh_r_ph(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
}
break;
case NM_ADDQH_R_W:
check_dsp_r2(ctx);
switch (extract32(ctx->opcode, 10, 1)) {
case 0:
/* ADDQH_W */
gen_helper_addqh_w(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case 1:
/* ADDQH_R_W */
gen_helper_addqh_r_w(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
}
break;
case NM_ADDU_S_QB:
check_dsp(ctx);
switch (extract32(ctx->opcode, 10, 1)) {
case 0:
/* ADDU_QB */
gen_helper_addu_qb(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case 1:
/* ADDU_S_QB */
gen_helper_addu_s_qb(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
}
break;
case NM_ADDU_S_PH:
check_dsp_r2(ctx);
switch (extract32(ctx->opcode, 10, 1)) {
case 0:
/* ADDU_PH */
gen_helper_addu_ph(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case 1:
/* ADDU_S_PH */
gen_helper_addu_s_ph(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
}
break;
case NM_ADDUH_R_QB:
check_dsp_r2(ctx);
switch (extract32(ctx->opcode, 10, 1)) {
case 0:
/* ADDUH_QB */
gen_helper_adduh_qb(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case 1:
/* ADDUH_R_QB */
gen_helper_adduh_r_qb(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
}
break;
case NM_SHRAV_R_PH:
check_dsp(ctx);
switch (extract32(ctx->opcode, 10, 1)) {
case 0:
/* SHRAV_PH */
gen_helper_shra_ph(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case 1:
/* SHRAV_R_PH */
gen_helper_shra_r_ph(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
}
break;
case NM_SHRAV_R_QB:
check_dsp_r2(ctx);
switch (extract32(ctx->opcode, 10, 1)) {
case 0:
/* SHRAV_QB */
gen_helper_shra_qb(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case 1:
/* SHRAV_R_QB */
gen_helper_shra_r_qb(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
}
break;
case NM_SUBQ_S_PH:
check_dsp(ctx);
switch (extract32(ctx->opcode, 10, 1)) {
case 0:
/* SUBQ_PH */
gen_helper_subq_ph(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case 1:
/* SUBQ_S_PH */
gen_helper_subq_s_ph(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
}
break;
case NM_SUBQH_R_PH:
check_dsp_r2(ctx);
switch (extract32(ctx->opcode, 10, 1)) {
case 0:
/* SUBQH_PH */
gen_helper_subqh_ph(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case 1:
/* SUBQH_R_PH */
gen_helper_subqh_r_ph(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
}
break;
case NM_SUBQH_R_W:
check_dsp_r2(ctx);
switch (extract32(ctx->opcode, 10, 1)) {
case 0:
/* SUBQH_W */
gen_helper_subqh_w(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case 1:
/* SUBQH_R_W */
gen_helper_subqh_r_w(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
}
break;
case NM_SUBU_S_QB:
check_dsp(ctx);
switch (extract32(ctx->opcode, 10, 1)) {
case 0:
/* SUBU_QB */
gen_helper_subu_qb(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case 1:
/* SUBU_S_QB */
gen_helper_subu_s_qb(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
}
break;
case NM_SUBU_S_PH:
check_dsp_r2(ctx);
switch (extract32(ctx->opcode, 10, 1)) {
case 0:
/* SUBU_PH */
gen_helper_subu_ph(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case 1:
/* SUBU_S_PH */
gen_helper_subu_s_ph(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
}
break;
case NM_SUBUH_R_QB:
check_dsp_r2(ctx);
switch (extract32(ctx->opcode, 10, 1)) {
case 0:
/* SUBUH_QB */
gen_helper_subuh_qb(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case 1:
/* SUBUH_R_QB */
gen_helper_subuh_r_qb(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
}
break;
case NM_SHLLV_S_PH:
check_dsp(ctx);
switch (extract32(ctx->opcode, 10, 1)) {
case 0:
/* SHLLV_PH */
gen_helper_shll_ph(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case 1:
/* SHLLV_S_PH */
gen_helper_shll_s_ph(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
}
break;
case NM_PRECR_SRA_R_PH_W:
check_dsp_r2(ctx);
switch (extract32(ctx->opcode, 10, 1)) {
case 0:
/* PRECR_SRA_PH_W */
{
TCGv_i32 sa_t = tcg_constant_i32(rd);
gen_helper_precr_sra_ph_w(v1_t, sa_t, v1_t,
cpu_gpr[rt]);
gen_store_gpr(v1_t, rt);
}
break;
case 1:
/* PRECR_SRA_R_PH_W */
{
TCGv_i32 sa_t = tcg_constant_i32(rd);
gen_helper_precr_sra_r_ph_w(v1_t, sa_t, v1_t,
cpu_gpr[rt]);
gen_store_gpr(v1_t, rt);
}
break;
}
break;
case NM_MULEU_S_PH_QBL:
check_dsp(ctx);
gen_helper_muleu_s_ph_qbl(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case NM_MULEU_S_PH_QBR:
check_dsp(ctx);
gen_helper_muleu_s_ph_qbr(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case NM_MULQ_RS_PH:
check_dsp(ctx);
gen_helper_mulq_rs_ph(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case NM_MULQ_S_PH:
check_dsp_r2(ctx);
gen_helper_mulq_s_ph(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case NM_MULQ_RS_W:
check_dsp_r2(ctx);
gen_helper_mulq_rs_w(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case NM_MULQ_S_W:
check_dsp_r2(ctx);
gen_helper_mulq_s_w(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case NM_APPEND:
check_dsp_r2(ctx);
gen_load_gpr(t0, rs);
if (rd != 0) {
tcg_gen_deposit_tl(cpu_gpr[rt], t0, cpu_gpr[rt], rd, 32 - rd);
}
tcg_gen_ext32s_tl(cpu_gpr[rt], cpu_gpr[rt]);
break;
case NM_MODSUB:
check_dsp(ctx);
gen_helper_modsub(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case NM_SHRAV_R_W:
check_dsp(ctx);
gen_helper_shra_r_w(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case NM_SHRLV_PH:
check_dsp_r2(ctx);
gen_helper_shrl_ph(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case NM_SHRLV_QB:
check_dsp(ctx);
gen_helper_shrl_qb(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case NM_SHLLV_QB:
check_dsp(ctx);
gen_helper_shll_qb(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case NM_SHLLV_S_W:
check_dsp(ctx);
gen_helper_shll_s_w(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case NM_SHILO:
check_dsp(ctx);
{
int16_t imm = extract32(ctx->opcode, 16, 7);
gen_helper_shilo(tcg_constant_tl(rd >> 3),
tcg_constant_tl(imm), tcg_env);
}
break;
case NM_MULEQ_S_W_PHL:
check_dsp(ctx);
gen_helper_muleq_s_w_phl(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case NM_MULEQ_S_W_PHR:
check_dsp(ctx);
gen_helper_muleq_s_w_phr(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case NM_MUL_S_PH:
check_dsp_r2(ctx);
switch (extract32(ctx->opcode, 10, 1)) {
case 0:
/* MUL_PH */
gen_helper_mul_ph(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case 1:
/* MUL_S_PH */
gen_helper_mul_s_ph(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
}
break;
case NM_PRECR_QB_PH:
check_dsp_r2(ctx);
gen_helper_precr_qb_ph(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case NM_PRECRQ_QB_PH:
check_dsp(ctx);
gen_helper_precrq_qb_ph(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case NM_PRECRQ_PH_W:
check_dsp(ctx);
gen_helper_precrq_ph_w(v1_t, v1_t, v2_t);
gen_store_gpr(v1_t, ret);
break;
case NM_PRECRQ_RS_PH_W:
check_dsp(ctx);
gen_helper_precrq_rs_ph_w(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case NM_PRECRQU_S_QB_PH:
check_dsp(ctx);
gen_helper_precrqu_s_qb_ph(v1_t, v1_t, v2_t, tcg_env);
gen_store_gpr(v1_t, ret);
break;
case NM_SHRA_R_W:
check_dsp(ctx);
gen_helper_shra_r_w(v1_t, tcg_constant_tl(rd), v1_t);
gen_store_gpr(v1_t, rt);
break;
case NM_SHRA_R_PH:
check_dsp(ctx);
tcg_gen_movi_tl(t0, rd >> 1);
switch (extract32(ctx->opcode, 10, 1)) {
case 0:
/* SHRA_PH */
gen_helper_shra_ph(v1_t, t0, v1_t);
gen_store_gpr(v1_t, rt);
break;
case 1:
/* SHRA_R_PH */
gen_helper_shra_r_ph(v1_t, t0, v1_t);
gen_store_gpr(v1_t, rt);
break;
}
break;
case NM_SHLL_S_PH:
check_dsp(ctx);
tcg_gen_movi_tl(t0, rd >> 1);
switch (extract32(ctx->opcode, 10, 2)) {
case 0:
/* SHLL_PH */
gen_helper_shll_ph(v1_t, t0, v1_t, tcg_env);
gen_store_gpr(v1_t, rt);
break;
case 2:
/* SHLL_S_PH */
gen_helper_shll_s_ph(v1_t, t0, v1_t, tcg_env);
gen_store_gpr(v1_t, rt);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_SHLL_S_W:
check_dsp(ctx);
gen_helper_shll_s_w(v1_t, tcg_constant_tl(rd), v1_t, tcg_env);
gen_store_gpr(v1_t, rt);
break;
case NM_REPL_PH:
check_dsp(ctx);
{
int16_t imm;
imm = sextract32(ctx->opcode, 11, 11);
imm = (int16_t)(imm << 6) >> 6;
if (rt != 0) {
tcg_gen_movi_tl(cpu_gpr[rt], dup_const(MO_16, imm));
}
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
}
static int decode_nanomips_32_48_opc(CPUMIPSState *env, DisasContext *ctx)
{
uint16_t insn;
uint32_t op;
int rt, rs, rd;
int offset;
int imm;
insn = translator_lduw(env, &ctx->base, ctx->base.pc_next + 2);
ctx->opcode = (ctx->opcode << 16) | insn;
rt = extract32(ctx->opcode, 21, 5);
rs = extract32(ctx->opcode, 16, 5);
rd = extract32(ctx->opcode, 11, 5);
op = extract32(ctx->opcode, 26, 6);
switch (op) {
case NM_P_ADDIU:
if (rt == 0) {
/* P.RI */
switch (extract32(ctx->opcode, 19, 2)) {
case NM_SIGRIE:
default:
gen_reserved_instruction(ctx);
break;
case NM_P_SYSCALL:
if ((extract32(ctx->opcode, 18, 1)) == NM_SYSCALL) {
generate_exception_end(ctx, EXCP_SYSCALL);
} else {
gen_reserved_instruction(ctx);
}
break;
case NM_BREAK:
generate_exception_end(ctx, EXCP_BREAK);
break;
case NM_SDBBP:
if (is_uhi(ctx, extract32(ctx->opcode, 0, 19))) {
ctx->base.is_jmp = DISAS_SEMIHOST;
} else {
if (ctx->hflags & MIPS_HFLAG_SBRI) {
gen_reserved_instruction(ctx);
} else {
generate_exception_end(ctx, EXCP_DBp);
}
}
break;
}
} else {
/* NM_ADDIU */
imm = extract32(ctx->opcode, 0, 16);
if (rs != 0) {
tcg_gen_addi_tl(cpu_gpr[rt], cpu_gpr[rs], imm);
} else {
tcg_gen_movi_tl(cpu_gpr[rt], imm);
}
tcg_gen_ext32s_tl(cpu_gpr[rt], cpu_gpr[rt]);
}
break;
case NM_ADDIUPC:
if (rt != 0) {
offset = sextract32(ctx->opcode, 0, 1) << 21 |
extract32(ctx->opcode, 1, 20) << 1;
target_long addr = addr_add(ctx, ctx->base.pc_next + 4, offset);
tcg_gen_movi_tl(cpu_gpr[rt], addr);
}
break;
case NM_POOL32A:
switch (ctx->opcode & 0x07) {
case NM_POOL32A0:
gen_pool32a0_nanomips_insn(env, ctx);
break;
case NM_POOL32A5:
{
int32_t op1 = extract32(ctx->opcode, 3, 7);
gen_pool32a5_nanomips_insn(ctx, op1, rd, rs, rt);
}
break;
case NM_POOL32A7:
switch (extract32(ctx->opcode, 3, 3)) {
case NM_P_LSX:
gen_p_lsx(ctx, rd, rs, rt);
break;
case NM_LSA:
/*
* In nanoMIPS, the shift field directly encodes the shift
* amount, meaning that the supported shift values are in
* the range 0 to 3 (instead of 1 to 4 in MIPSR6).
*/
gen_lsa(ctx, rd, rt, rs, extract32(ctx->opcode, 9, 2) - 1);
break;
case NM_EXTW:
gen_ext(ctx, 32, rd, rs, rt, extract32(ctx->opcode, 6, 5));
break;
case NM_POOL32AXF:
gen_pool32axf_nanomips_insn(env, ctx);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_P_GP_W:
switch (ctx->opcode & 0x03) {
case NM_ADDIUGP_W:
if (rt != 0) {
offset = extract32(ctx->opcode, 0, 21);
gen_op_addr_addi(ctx, cpu_gpr[rt], cpu_gpr[28], offset);
}
break;
case NM_LWGP:
gen_ld(ctx, OPC_LW, rt, 28, extract32(ctx->opcode, 2, 19) << 2);
break;
case NM_SWGP:
gen_st(ctx, OPC_SW, rt, 28, extract32(ctx->opcode, 2, 19) << 2);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_P48I:
{
insn = translator_lduw(env, &ctx->base, ctx->base.pc_next + 4);
target_long addr_off = extract32(ctx->opcode, 0, 16) | insn << 16;
switch (extract32(ctx->opcode, 16, 5)) {
case NM_LI48:
check_nms(ctx);
if (rt != 0) {
tcg_gen_movi_tl(cpu_gpr[rt], addr_off);
}
break;
case NM_ADDIU48:
check_nms(ctx);
if (rt != 0) {
tcg_gen_addi_tl(cpu_gpr[rt], cpu_gpr[rt], addr_off);
tcg_gen_ext32s_tl(cpu_gpr[rt], cpu_gpr[rt]);
}
break;
case NM_ADDIUGP48:
check_nms(ctx);
if (rt != 0) {
gen_op_addr_addi(ctx, cpu_gpr[rt], cpu_gpr[28], addr_off);
}
break;
case NM_ADDIUPC48:
check_nms(ctx);
if (rt != 0) {
target_long addr = addr_add(ctx, ctx->base.pc_next + 6,
addr_off);
tcg_gen_movi_tl(cpu_gpr[rt], addr);
}
break;
case NM_LWPC48:
check_nms(ctx);
if (rt != 0) {
target_long addr = addr_add(ctx, ctx->base.pc_next + 6,
addr_off);
tcg_gen_qemu_ld_tl(cpu_gpr[rt], tcg_constant_tl(addr),
ctx->mem_idx,
mo_endian(ctx) | MO_SL
| ctx->default_tcg_memop_mask);
}
break;
case NM_SWPC48:
check_nms(ctx);
{
TCGv t1;
t1 = tcg_temp_new();
target_long addr = addr_add(ctx, ctx->base.pc_next + 6,
addr_off);
gen_load_gpr(t1, rt);
tcg_gen_qemu_st_tl(t1, tcg_constant_tl(addr), ctx->mem_idx,
mo_endian(ctx) | MO_UL
| ctx->default_tcg_memop_mask);
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
return 6;
}
case NM_P_U12:
switch (extract32(ctx->opcode, 12, 4)) {
case NM_ORI:
gen_logic_imm(ctx, OPC_ORI, rt, rs, extract32(ctx->opcode, 0, 12));
break;
case NM_XORI:
gen_logic_imm(ctx, OPC_XORI, rt, rs, extract32(ctx->opcode, 0, 12));
break;
case NM_ANDI:
gen_logic_imm(ctx, OPC_ANDI, rt, rs, extract32(ctx->opcode, 0, 12));
break;
case NM_P_SR:
switch (extract32(ctx->opcode, 20, 1)) {
case NM_PP_SR:
switch (ctx->opcode & 3) {
case NM_SAVE:
gen_save(ctx, rt, extract32(ctx->opcode, 16, 4),
extract32(ctx->opcode, 2, 1),
extract32(ctx->opcode, 3, 9) << 3);
break;
case NM_RESTORE:
case NM_RESTORE_JRC:
gen_restore(ctx, rt, extract32(ctx->opcode, 16, 4),
extract32(ctx->opcode, 2, 1),
extract32(ctx->opcode, 3, 9) << 3);
if ((ctx->opcode & 3) == NM_RESTORE_JRC) {
gen_compute_branch_nm(ctx, OPC_JR, 2, 31, 0, 0);
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_P_SR_F:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_SLTI:
gen_slt_imm(ctx, OPC_SLTI, rt, rs, extract32(ctx->opcode, 0, 12));
break;
case NM_SLTIU:
gen_slt_imm(ctx, OPC_SLTIU, rt, rs, extract32(ctx->opcode, 0, 12));
break;
case NM_SEQI:
{
TCGv t0 = tcg_temp_new();
imm = extract32(ctx->opcode, 0, 12);
gen_load_gpr(t0, rs);
tcg_gen_setcondi_tl(TCG_COND_EQ, t0, t0, imm);
gen_store_gpr(t0, rt);
}
break;
case NM_ADDIUNEG:
imm = (int16_t) extract32(ctx->opcode, 0, 12);
gen_arith_imm(ctx, OPC_ADDIU, rt, rs, -imm);
break;
case NM_P_SHIFT:
{
int shift = extract32(ctx->opcode, 0, 5);
switch (extract32(ctx->opcode, 5, 4)) {
case NM_P_SLL:
if (rt == 0 && shift == 0) {
/* NOP */
} else if (rt == 0 && shift == 3) {
/* EHB - treat as NOP */
} else if (rt == 0 && shift == 5) {
/* PAUSE - treat as NOP */
} else if (rt == 0 && shift == 6) {
/* SYNC */
gen_sync(extract32(ctx->opcode, 16, 5));
} else {
/* SLL */
gen_shift_imm(ctx, OPC_SLL, rt, rs,
extract32(ctx->opcode, 0, 5));
}
break;
case NM_SRL:
gen_shift_imm(ctx, OPC_SRL, rt, rs,
extract32(ctx->opcode, 0, 5));
break;
case NM_SRA:
gen_shift_imm(ctx, OPC_SRA, rt, rs,
extract32(ctx->opcode, 0, 5));
break;
case NM_ROTR:
gen_shift_imm(ctx, OPC_ROTR, rt, rs,
extract32(ctx->opcode, 0, 5));
break;
default:
gen_reserved_instruction(ctx);
break;
}
}
break;
case NM_P_ROTX:
check_nms(ctx);
if (rt != 0) {
TCGv t0 = tcg_temp_new();
TCGv_i32 shift =
tcg_constant_i32(extract32(ctx->opcode, 0, 5));
TCGv_i32 shiftx =
tcg_constant_i32(extract32(ctx->opcode, 7, 4) << 1);
TCGv_i32 stripe =
tcg_constant_i32(extract32(ctx->opcode, 6, 1));
gen_load_gpr(t0, rs);
gen_helper_rotx(cpu_gpr[rt], t0, shift, shiftx, stripe);
}
break;
case NM_P_INS:
switch (((ctx->opcode >> 10) & 2) |
(extract32(ctx->opcode, 5, 1))) {
case NM_INS:
check_nms(ctx);
gen_bitops(ctx, OPC_INS, rt, rs, extract32(ctx->opcode, 0, 5),
extract32(ctx->opcode, 6, 5));
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_P_EXT:
switch (((ctx->opcode >> 10) & 2) |
(extract32(ctx->opcode, 5, 1))) {
case NM_EXT:
check_nms(ctx);
gen_bitops(ctx, OPC_EXT, rt, rs, extract32(ctx->opcode, 0, 5),
extract32(ctx->opcode, 6, 5));
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_POOL32F:
gen_pool32f_nanomips_insn(ctx);
break;
case NM_POOL32S:
break;
case NM_P_LUI:
switch (extract32(ctx->opcode, 1, 1)) {
case NM_LUI:
if (rt != 0) {
tcg_gen_movi_tl(cpu_gpr[rt],
sextract32(ctx->opcode, 0, 1) << 31 |
extract32(ctx->opcode, 2, 10) << 21 |
extract32(ctx->opcode, 12, 9) << 12);
}
break;
case NM_ALUIPC:
if (rt != 0) {
offset = sextract32(ctx->opcode, 0, 1) << 31 |
extract32(ctx->opcode, 2, 10) << 21 |
extract32(ctx->opcode, 12, 9) << 12;
target_long addr;
addr = ~0xFFF & addr_add(ctx, ctx->base.pc_next + 4, offset);
tcg_gen_movi_tl(cpu_gpr[rt], addr);
}
break;
}
break;
case NM_P_GP_BH:
{
uint32_t u = extract32(ctx->opcode, 0, 18);
switch (extract32(ctx->opcode, 18, 3)) {
case NM_LBGP:
gen_ld(ctx, OPC_LB, rt, 28, u);
break;
case NM_SBGP:
gen_st(ctx, OPC_SB, rt, 28, u);
break;
case NM_LBUGP:
gen_ld(ctx, OPC_LBU, rt, 28, u);
break;
case NM_ADDIUGP_B:
if (rt != 0) {
gen_op_addr_addi(ctx, cpu_gpr[rt], cpu_gpr[28], u);
}
break;
case NM_P_GP_LH:
u &= ~1;
switch (ctx->opcode & 1) {
case NM_LHGP:
gen_ld(ctx, OPC_LH, rt, 28, u);
break;
case NM_LHUGP:
gen_ld(ctx, OPC_LHU, rt, 28, u);
break;
}
break;
case NM_P_GP_SH:
u &= ~1;
switch (ctx->opcode & 1) {
case NM_SHGP:
gen_st(ctx, OPC_SH, rt, 28, u);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_P_GP_CP1:
u &= ~0x3;
switch (ctx->opcode & 0x3) {
case NM_LWC1GP:
gen_cop1_ldst(ctx, OPC_LWC1, rt, 28, u);
break;
case NM_LDC1GP:
gen_cop1_ldst(ctx, OPC_LDC1, rt, 28, u);
break;
case NM_SWC1GP:
gen_cop1_ldst(ctx, OPC_SWC1, rt, 28, u);
break;
case NM_SDC1GP:
gen_cop1_ldst(ctx, OPC_SDC1, rt, 28, u);
break;
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
}
break;
case NM_P_LS_U12:
{
uint32_t u = extract32(ctx->opcode, 0, 12);
switch (extract32(ctx->opcode, 12, 4)) {
case NM_P_PREFU12:
if (rt == 31) {
/* SYNCI */
/*
* Break the TB to be able to sync copied instructions
* immediately.
*/
ctx->base.is_jmp = DISAS_STOP;
} else {
/* PREF */
/* Treat as NOP. */
}
break;
case NM_LB:
gen_ld(ctx, OPC_LB, rt, rs, u);
break;
case NM_LH:
gen_ld(ctx, OPC_LH, rt, rs, u);
break;
case NM_LW:
gen_ld(ctx, OPC_LW, rt, rs, u);
break;
case NM_LBU:
gen_ld(ctx, OPC_LBU, rt, rs, u);
break;
case NM_LHU:
gen_ld(ctx, OPC_LHU, rt, rs, u);
break;
case NM_SB:
gen_st(ctx, OPC_SB, rt, rs, u);
break;
case NM_SH:
gen_st(ctx, OPC_SH, rt, rs, u);
break;
case NM_SW:
gen_st(ctx, OPC_SW, rt, rs, u);
break;
case NM_LWC1:
gen_cop1_ldst(ctx, OPC_LWC1, rt, rs, u);
break;
case NM_LDC1:
gen_cop1_ldst(ctx, OPC_LDC1, rt, rs, u);
break;
case NM_SWC1:
gen_cop1_ldst(ctx, OPC_SWC1, rt, rs, u);
break;
case NM_SDC1:
gen_cop1_ldst(ctx, OPC_SDC1, rt, rs, u);
break;
default:
gen_reserved_instruction(ctx);
break;
}
}
break;
case NM_P_LS_S9:
{
int32_t s = (sextract32(ctx->opcode, 15, 1) << 8) |
extract32(ctx->opcode, 0, 8);
switch (extract32(ctx->opcode, 8, 3)) {
case NM_P_LS_S0:
switch (extract32(ctx->opcode, 11, 4)) {
case NM_LBS9:
gen_ld(ctx, OPC_LB, rt, rs, s);
break;
case NM_LHS9:
gen_ld(ctx, OPC_LH, rt, rs, s);
break;
case NM_LWS9:
gen_ld(ctx, OPC_LW, rt, rs, s);
break;
case NM_LBUS9:
gen_ld(ctx, OPC_LBU, rt, rs, s);
break;
case NM_LHUS9:
gen_ld(ctx, OPC_LHU, rt, rs, s);
break;
case NM_SBS9:
gen_st(ctx, OPC_SB, rt, rs, s);
break;
case NM_SHS9:
gen_st(ctx, OPC_SH, rt, rs, s);
break;
case NM_SWS9:
gen_st(ctx, OPC_SW, rt, rs, s);
break;
case NM_LWC1S9:
gen_cop1_ldst(ctx, OPC_LWC1, rt, rs, s);
break;
case NM_LDC1S9:
gen_cop1_ldst(ctx, OPC_LDC1, rt, rs, s);
break;
case NM_SWC1S9:
gen_cop1_ldst(ctx, OPC_SWC1, rt, rs, s);
break;
case NM_SDC1S9:
gen_cop1_ldst(ctx, OPC_SDC1, rt, rs, s);
break;
case NM_P_PREFS9:
if (rt == 31) {
/* SYNCI */
/*
* Break the TB to be able to sync copied instructions
* immediately.
*/
ctx->base.is_jmp = DISAS_STOP;
} else {
/* PREF */
/* Treat as NOP. */
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_P_LS_S1:
switch (extract32(ctx->opcode, 11, 4)) {
case NM_UALH:
case NM_UASH:
check_nms(ctx);
{
TCGv t0 = tcg_temp_new();
TCGv t1 = tcg_temp_new();
gen_base_offset_addr(ctx, t0, rs, s);
switch (extract32(ctx->opcode, 11, 4)) {
case NM_UALH:
tcg_gen_qemu_ld_tl(t0, t0, ctx->mem_idx,
mo_endian(ctx) | MO_SW | MO_UNALN);
gen_store_gpr(t0, rt);
break;
case NM_UASH:
gen_load_gpr(t1, rt);
tcg_gen_qemu_st_tl(t1, t0, ctx->mem_idx,
mo_endian(ctx) | MO_UW | MO_UNALN);
break;
}
}
break;
case NM_P_LL:
switch (ctx->opcode & 0x03) {
case NM_LL:
gen_ld(ctx, OPC_LL, rt, rs, s);
break;
case NM_LLWP:
check_xnp(ctx);
gen_llwp(ctx, rs, 0, rt, extract32(ctx->opcode, 3, 5));
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_P_SC:
switch (ctx->opcode & 0x03) {
case NM_SC:
gen_st_cond(ctx, rt, rs, s, mo_endian(ctx) | MO_SL,
false);
break;
case NM_SCWP:
check_xnp(ctx);
gen_scwp(ctx, rs, 0, rt, extract32(ctx->opcode, 3, 5),
false);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_CACHE:
check_cp0_enabled(ctx);
if (ctx->hflags & MIPS_HFLAG_ITC_CACHE) {
gen_cache_operation(ctx, rt, rs, s);
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_P_LS_E0:
switch (extract32(ctx->opcode, 11, 4)) {
case NM_LBE:
check_eva(ctx);
check_cp0_enabled(ctx);
gen_ld(ctx, OPC_LBE, rt, rs, s);
break;
case NM_SBE:
check_eva(ctx);
check_cp0_enabled(ctx);
gen_st(ctx, OPC_SBE, rt, rs, s);
break;
case NM_LBUE:
check_eva(ctx);
check_cp0_enabled(ctx);
gen_ld(ctx, OPC_LBUE, rt, rs, s);
break;
case NM_P_PREFE:
if (rt == 31) {
/* case NM_SYNCIE */
check_eva(ctx);
check_cp0_enabled(ctx);
/*
* Break the TB to be able to sync copied instructions
* immediately.
*/
ctx->base.is_jmp = DISAS_STOP;
} else {
/* case NM_PREFE */
check_eva(ctx);
check_cp0_enabled(ctx);
/* Treat as NOP. */
}
break;
case NM_LHE:
check_eva(ctx);
check_cp0_enabled(ctx);
gen_ld(ctx, OPC_LHE, rt, rs, s);
break;
case NM_SHE:
check_eva(ctx);
check_cp0_enabled(ctx);
gen_st(ctx, OPC_SHE, rt, rs, s);
break;
case NM_LHUE:
check_eva(ctx);
check_cp0_enabled(ctx);
gen_ld(ctx, OPC_LHUE, rt, rs, s);
break;
case NM_CACHEE:
check_eva(ctx);
check_cp0_enabled(ctx);
check_nms_dl_il_sl_tl_l2c(ctx);
gen_cache_operation(ctx, rt, rs, s);
break;
case NM_LWE:
check_eva(ctx);
check_cp0_enabled(ctx);
gen_ld(ctx, OPC_LWE, rt, rs, s);
break;
case NM_SWE:
check_eva(ctx);
check_cp0_enabled(ctx);
gen_st(ctx, OPC_SWE, rt, rs, s);
break;
case NM_P_LLE:
switch (extract32(ctx->opcode, 2, 2)) {
case NM_LLE:
check_xnp(ctx);
check_eva(ctx);
check_cp0_enabled(ctx);
gen_ld(ctx, OPC_LLE, rt, rs, s);
break;
case NM_LLWPE:
check_xnp(ctx);
check_eva(ctx);
check_cp0_enabled(ctx);
gen_llwp(ctx, rs, 0, rt, extract32(ctx->opcode, 3, 5));
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_P_SCE:
switch (extract32(ctx->opcode, 2, 2)) {
case NM_SCE:
check_xnp(ctx);
check_eva(ctx);
check_cp0_enabled(ctx);
gen_st_cond(ctx, rt, rs, s, mo_endian(ctx) | MO_SL,
true);
break;
case NM_SCWPE:
check_xnp(ctx);
check_eva(ctx);
check_cp0_enabled(ctx);
gen_scwp(ctx, rs, 0, rt, extract32(ctx->opcode, 3, 5),
true);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_P_LS_WM:
case NM_P_LS_UAWM:
check_nms(ctx);
{
int count = extract32(ctx->opcode, 12, 3);
int counter = 0;
offset = sextract32(ctx->opcode, 15, 1) << 8 |
extract32(ctx->opcode, 0, 8);
TCGv va = tcg_temp_new();
TCGv t1 = tcg_temp_new();
MemOp memop = (extract32(ctx->opcode, 8, 3)) ==
NM_P_LS_UAWM ? MO_UNALN : MO_ALIGN;
count = (count == 0) ? 8 : count;
while (counter != count) {
int this_rt = ((rt + counter) & 0x1f) | (rt & 0x10);
int this_offset = offset + (counter << 2);
gen_base_offset_addr(ctx, va, rs, this_offset);
switch (extract32(ctx->opcode, 11, 1)) {
case NM_LWM:
tcg_gen_qemu_ld_tl(t1, va, ctx->mem_idx,
memop | mo_endian(ctx) | MO_SL);
gen_store_gpr(t1, this_rt);
if ((this_rt == rs) &&
(counter != (count - 1))) {
/* UNPREDICTABLE */
}
break;
case NM_SWM:
this_rt = (rt == 0) ? 0 : this_rt;
gen_load_gpr(t1, this_rt);
tcg_gen_qemu_st_tl(t1, va, ctx->mem_idx,
memop | mo_endian(ctx) | MO_UL);
break;
}
counter++;
}
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
}
break;
case NM_MOVE_BALC:
check_nms(ctx);
{
TCGv t0 = tcg_temp_new();
int32_t s = sextract32(ctx->opcode, 0, 1) << 21 |
extract32(ctx->opcode, 1, 20) << 1;
rd = (extract32(ctx->opcode, 24, 1)) == 0 ? 4 : 5;
rt = decode_gpr_gpr4_zero(extract32(ctx->opcode, 25, 1) << 3 |
extract32(ctx->opcode, 21, 3));
gen_load_gpr(t0, rt);
tcg_gen_mov_tl(cpu_gpr[rd], t0);
gen_compute_branch_nm(ctx, OPC_BGEZAL, 4, 0, 0, s);
}
break;
case NM_P_BAL:
{
int32_t s = sextract32(ctx->opcode, 0, 1) << 25 |
extract32(ctx->opcode, 1, 24) << 1;
if ((extract32(ctx->opcode, 25, 1)) == 0) {
/* BC */
gen_compute_branch_nm(ctx, OPC_BEQ, 4, 0, 0, s);
} else {
/* BALC */
gen_compute_branch_nm(ctx, OPC_BGEZAL, 4, 0, 0, s);
}
}
break;
case NM_P_J:
switch (extract32(ctx->opcode, 12, 4)) {
case NM_JALRC:
case NM_JALRC_HB:
gen_compute_branch_nm(ctx, OPC_JALR, 4, rs, rt, 0);
break;
case NM_P_BALRSC:
gen_compute_nanomips_pbalrsc_branch(ctx, rs, rt);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_P_BR1:
{
int32_t s = sextract32(ctx->opcode, 0, 1) << 14 |
extract32(ctx->opcode, 1, 13) << 1;
switch (extract32(ctx->opcode, 14, 2)) {
case NM_BEQC:
check_nms(ctx);
gen_compute_branch_nm(ctx, OPC_BEQ, 4, rs, rt, s);
break;
case NM_P_BR3A:
s = sextract32(ctx->opcode, 0, 1) << 14 |
extract32(ctx->opcode, 1, 13) << 1;
switch (extract32(ctx->opcode, 16, 5)) {
case NM_BC1EQZC:
check_cp1_enabled(ctx);
gen_compute_branch_cp1_nm(ctx, OPC_BC1EQZ, rt, s);
break;
case NM_BC1NEZC:
check_cp1_enabled(ctx);
gen_compute_branch_cp1_nm(ctx, OPC_BC1NEZ, rt, s);
break;
case NM_BPOSGE32C:
check_dsp_r3(ctx);
{
imm = extract32(ctx->opcode, 1, 13)
| extract32(ctx->opcode, 0, 1) << 13;
gen_compute_branch_nm(ctx, OPC_BPOSGE32, 4, -1, -2,
imm << 1);
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_BGEC:
if (rs == rt) {
gen_compute_compact_branch_nm(ctx, OPC_BC, rs, rt, s);
} else {
gen_compute_compact_branch_nm(ctx, OPC_BGEC, rs, rt, s);
}
break;
case NM_BGEUC:
if (rs == rt || rt == 0) {
gen_compute_compact_branch_nm(ctx, OPC_BC, 0, 0, s);
} else if (rs == 0) {
gen_compute_compact_branch_nm(ctx, OPC_BEQZC, rt, 0, s);
} else {
gen_compute_compact_branch_nm(ctx, OPC_BGEUC, rs, rt, s);
}
break;
}
}
break;
case NM_P_BR2:
{
int32_t s = sextract32(ctx->opcode, 0, 1) << 14 |
extract32(ctx->opcode, 1, 13) << 1;
switch (extract32(ctx->opcode, 14, 2)) {
case NM_BNEC:
check_nms(ctx);
if (rs == rt) {
/* NOP */
ctx->hflags |= MIPS_HFLAG_FBNSLOT;
} else {
gen_compute_branch_nm(ctx, OPC_BNE, 4, rs, rt, s);
}
break;
case NM_BLTC:
if (rs != 0 && rt != 0 && rs == rt) {
/* NOP */
ctx->hflags |= MIPS_HFLAG_FBNSLOT;
} else {
gen_compute_compact_branch_nm(ctx, OPC_BLTC, rs, rt, s);
}
break;
case NM_BLTUC:
if (rs == 0 || rs == rt) {
/* NOP */
ctx->hflags |= MIPS_HFLAG_FBNSLOT;
} else {
gen_compute_compact_branch_nm(ctx, OPC_BLTUC, rs, rt, s);
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
}
break;
case NM_P_BRI:
{
int32_t s = sextract32(ctx->opcode, 0, 1) << 11 |
extract32(ctx->opcode, 1, 10) << 1;
uint32_t u = extract32(ctx->opcode, 11, 7);
gen_compute_imm_branch(ctx, extract32(ctx->opcode, 18, 3),
rt, u, s);
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
return 4;
}
static int decode_isa_nanomips(CPUMIPSState *env, DisasContext *ctx)
{
uint32_t op;
int rt = decode_gpr_gpr3(NANOMIPS_EXTRACT_RT3(ctx->opcode));
int rs = decode_gpr_gpr3(NANOMIPS_EXTRACT_RS3(ctx->opcode));
int rd = decode_gpr_gpr3(NANOMIPS_EXTRACT_RD3(ctx->opcode));
int offset;
int imm;
/* make sure instructions are on a halfword boundary */
if (ctx->base.pc_next & 0x1) {
TCGv tmp = tcg_constant_tl(ctx->base.pc_next);
tcg_gen_st_tl(tmp, tcg_env, offsetof(CPUMIPSState, CP0_BadVAddr));
generate_exception_end(ctx, EXCP_AdEL);
return 2;
}
op = extract32(ctx->opcode, 10, 6);
switch (op) {
case NM_P16_MV:
rt = NANOMIPS_EXTRACT_RD5(ctx->opcode);
if (rt != 0) {
/* MOVE */
rs = NANOMIPS_EXTRACT_RS5(ctx->opcode);
gen_arith(ctx, OPC_ADDU, rt, rs, 0);
} else {
/* P16.RI */
switch (extract32(ctx->opcode, 3, 2)) {
case NM_P16_SYSCALL:
if (extract32(ctx->opcode, 2, 1) == 0) {
generate_exception_end(ctx, EXCP_SYSCALL);
} else {
gen_reserved_instruction(ctx);
}
break;
case NM_BREAK16:
generate_exception_end(ctx, EXCP_BREAK);
break;
case NM_SDBBP16:
if (is_uhi(ctx, extract32(ctx->opcode, 0, 3))) {
ctx->base.is_jmp = DISAS_SEMIHOST;
} else {
if (ctx->hflags & MIPS_HFLAG_SBRI) {
gen_reserved_instruction(ctx);
} else {
generate_exception_end(ctx, EXCP_DBp);
}
}
break;
default:
gen_reserved_instruction(ctx);
break;
}
}
break;
case NM_P16_SHIFT:
{
int shift = extract32(ctx->opcode, 0, 3);
uint32_t opc = 0;
shift = (shift == 0) ? 8 : shift;
switch (extract32(ctx->opcode, 3, 1)) {
case NM_SLL16:
opc = OPC_SLL;
break;
case NM_SRL16:
opc = OPC_SRL;
break;
}
gen_shift_imm(ctx, opc, rt, rs, shift);
}
break;
case NM_P16C:
switch (ctx->opcode & 1) {
case NM_POOL16C_0:
gen_pool16c_nanomips_insn(ctx);
break;
case NM_LWXS16:
gen_ldxs(ctx, rt, rs, rd);
break;
}
break;
case NM_P16_A1:
switch (extract32(ctx->opcode, 6, 1)) {
case NM_ADDIUR1SP:
imm = extract32(ctx->opcode, 0, 6) << 2;
gen_arith_imm(ctx, OPC_ADDIU, rt, 29, imm);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_P16_A2:
switch (extract32(ctx->opcode, 3, 1)) {
case NM_ADDIUR2:
imm = extract32(ctx->opcode, 0, 3) << 2;
gen_arith_imm(ctx, OPC_ADDIU, rt, rs, imm);
break;
case NM_P_ADDIURS5:
rt = extract32(ctx->opcode, 5, 5);
if (rt != 0) {
/* imm = sign_extend(s[3] . s[2:0] , from_nbits = 4) */
imm = (sextract32(ctx->opcode, 4, 1) << 3) |
(extract32(ctx->opcode, 0, 3));
gen_arith_imm(ctx, OPC_ADDIU, rt, rt, imm);
}
break;
}
break;
case NM_P16_ADDU:
switch (ctx->opcode & 0x1) {
case NM_ADDU16:
gen_arith(ctx, OPC_ADDU, rd, rs, rt);
break;
case NM_SUBU16:
gen_arith(ctx, OPC_SUBU, rd, rs, rt);
break;
}
break;
case NM_P16_4X4:
rt = (extract32(ctx->opcode, 9, 1) << 3) |
extract32(ctx->opcode, 5, 3);
rs = (extract32(ctx->opcode, 4, 1) << 3) |
extract32(ctx->opcode, 0, 3);
rt = decode_gpr_gpr4(rt);
rs = decode_gpr_gpr4(rs);
switch ((extract32(ctx->opcode, 7, 2) & 0x2) |
(extract32(ctx->opcode, 3, 1))) {
case NM_ADDU4X4:
check_nms(ctx);
gen_arith(ctx, OPC_ADDU, rt, rs, rt);
break;
case NM_MUL4X4:
check_nms(ctx);
gen_r6_muldiv(ctx, R6_OPC_MUL, rt, rs, rt);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_LI16:
{
imm = extract32(ctx->opcode, 0, 7);
imm = (imm == 0x7f ? -1 : imm);
if (rt != 0) {
tcg_gen_movi_tl(cpu_gpr[rt], imm);
}
}
break;
case NM_ANDI16:
{
uint32_t u = extract32(ctx->opcode, 0, 4);
u = (u == 12) ? 0xff :
(u == 13) ? 0xffff : u;
gen_logic_imm(ctx, OPC_ANDI, rt, rs, u);
}
break;
case NM_P16_LB:
offset = extract32(ctx->opcode, 0, 2);
switch (extract32(ctx->opcode, 2, 2)) {
case NM_LB16:
gen_ld(ctx, OPC_LB, rt, rs, offset);
break;
case NM_SB16:
rt = decode_gpr_gpr3_src_store(
NANOMIPS_EXTRACT_RT3(ctx->opcode));
gen_st(ctx, OPC_SB, rt, rs, offset);
break;
case NM_LBU16:
gen_ld(ctx, OPC_LBU, rt, rs, offset);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_P16_LH:
offset = extract32(ctx->opcode, 1, 2) << 1;
switch ((extract32(ctx->opcode, 3, 1) << 1) | (ctx->opcode & 1)) {
case NM_LH16:
gen_ld(ctx, OPC_LH, rt, rs, offset);
break;
case NM_SH16:
rt = decode_gpr_gpr3_src_store(
NANOMIPS_EXTRACT_RT3(ctx->opcode));
gen_st(ctx, OPC_SH, rt, rs, offset);
break;
case NM_LHU16:
gen_ld(ctx, OPC_LHU, rt, rs, offset);
break;
default:
gen_reserved_instruction(ctx);
break;
}
break;
case NM_LW16:
offset = extract32(ctx->opcode, 0, 4) << 2;
gen_ld(ctx, OPC_LW, rt, rs, offset);
break;
case NM_LWSP16:
rt = NANOMIPS_EXTRACT_RD5(ctx->opcode);
offset = extract32(ctx->opcode, 0, 5) << 2;
gen_ld(ctx, OPC_LW, rt, 29, offset);
break;
case NM_LW4X4:
check_nms(ctx);
rt = (extract32(ctx->opcode, 9, 1) << 3) |
extract32(ctx->opcode, 5, 3);
rs = (extract32(ctx->opcode, 4, 1) << 3) |
extract32(ctx->opcode, 0, 3);
offset = (extract32(ctx->opcode, 3, 1) << 3) |
(extract32(ctx->opcode, 8, 1) << 2);
rt = decode_gpr_gpr4(rt);
rs = decode_gpr_gpr4(rs);
gen_ld(ctx, OPC_LW, rt, rs, offset);
break;
case NM_SW4X4:
check_nms(ctx);
rt = (extract32(ctx->opcode, 9, 1) << 3) |
extract32(ctx->opcode, 5, 3);
rs = (extract32(ctx->opcode, 4, 1) << 3) |
extract32(ctx->opcode, 0, 3);
offset = (extract32(ctx->opcode, 3, 1) << 3) |
(extract32(ctx->opcode, 8, 1) << 2);
rt = decode_gpr_gpr4_zero(rt);
rs = decode_gpr_gpr4(rs);
gen_st(ctx, OPC_SW, rt, rs, offset);
break;
case NM_LWGP16:
offset = extract32(ctx->opcode, 0, 7) << 2;
gen_ld(ctx, OPC_LW, rt, 28, offset);
break;
case NM_SWSP16:
rt = NANOMIPS_EXTRACT_RD5(ctx->opcode);
offset = extract32(ctx->opcode, 0, 5) << 2;
gen_st(ctx, OPC_SW, rt, 29, offset);
break;
case NM_SW16:
rt = decode_gpr_gpr3_src_store(
NANOMIPS_EXTRACT_RT3(ctx->opcode));
rs = decode_gpr_gpr3(NANOMIPS_EXTRACT_RS3(ctx->opcode));
offset = extract32(ctx->opcode, 0, 4) << 2;
gen_st(ctx, OPC_SW, rt, rs, offset);
break;
case NM_SWGP16:
rt = decode_gpr_gpr3_src_store(
NANOMIPS_EXTRACT_RT3(ctx->opcode));
offset = extract32(ctx->opcode, 0, 7) << 2;
gen_st(ctx, OPC_SW, rt, 28, offset);
break;
case NM_BC16:
gen_compute_branch_nm(ctx, OPC_BEQ, 2, 0, 0,
(sextract32(ctx->opcode, 0, 1) << 10) |
(extract32(ctx->opcode, 1, 9) << 1));
break;
case NM_BALC16:
gen_compute_branch_nm(ctx, OPC_BGEZAL, 2, 0, 0,
(sextract32(ctx->opcode, 0, 1) << 10) |
(extract32(ctx->opcode, 1, 9) << 1));
break;
case NM_BEQZC16:
gen_compute_branch_nm(ctx, OPC_BEQ, 2, rt, 0,
(sextract32(ctx->opcode, 0, 1) << 7) |
(extract32(ctx->opcode, 1, 6) << 1));
break;
case NM_BNEZC16:
gen_compute_branch_nm(ctx, OPC_BNE, 2, rt, 0,
(sextract32(ctx->opcode, 0, 1) << 7) |
(extract32(ctx->opcode, 1, 6) << 1));
break;
case NM_P16_BR:
switch (ctx->opcode & 0xf) {
case 0:
/* P16.JRC */
switch (extract32(ctx->opcode, 4, 1)) {
case NM_JRC:
gen_compute_branch_nm(ctx, OPC_JR, 2,
extract32(ctx->opcode, 5, 5), 0, 0);
break;
case NM_JALRC16:
gen_compute_branch_nm(ctx, OPC_JALR, 2,
extract32(ctx->opcode, 5, 5), 31, 0);
break;
}
break;
default:
{
/* P16.BRI */
uint32_t opc = extract32(ctx->opcode, 4, 3) <
extract32(ctx->opcode, 7, 3) ? OPC_BEQ : OPC_BNE;
gen_compute_branch_nm(ctx, opc, 2, rs, rt,
extract32(ctx->opcode, 0, 4) << 1);
}
break;
}
break;
case NM_P16_SR:
{
int count = extract32(ctx->opcode, 0, 4);
int u = extract32(ctx->opcode, 4, 4) << 4;
rt = 30 + extract32(ctx->opcode, 9, 1);
switch (extract32(ctx->opcode, 8, 1)) {
case NM_SAVE16:
gen_save(ctx, rt, count, 0, u);
break;
case NM_RESTORE_JRC16:
gen_restore(ctx, rt, count, 0, u);
gen_compute_branch_nm(ctx, OPC_JR, 2, 31, 0, 0);
break;
}
}
break;
case NM_MOVEP:
case NM_MOVEPREV:
check_nms(ctx);
{
static const int gpr2reg1[] = {4, 5, 6, 7};
static const int gpr2reg2[] = {5, 6, 7, 8};
int re;
int rd2 = extract32(ctx->opcode, 3, 1) << 1 |
extract32(ctx->opcode, 8, 1);
int r1 = gpr2reg1[rd2];
int r2 = gpr2reg2[rd2];
int r3 = extract32(ctx->opcode, 4, 1) << 3 |
extract32(ctx->opcode, 0, 3);
int r4 = extract32(ctx->opcode, 9, 1) << 3 |
extract32(ctx->opcode, 5, 3);
TCGv t0 = tcg_temp_new();
TCGv t1 = tcg_temp_new();
if (op == NM_MOVEP) {
rd = r1;
re = r2;
rs = decode_gpr_gpr4_zero(r3);
rt = decode_gpr_gpr4_zero(r4);
} else {
rd = decode_gpr_gpr4(r3);
re = decode_gpr_gpr4(r4);
rs = r1;
rt = r2;
}
gen_load_gpr(t0, rs);
gen_load_gpr(t1, rt);
tcg_gen_mov_tl(cpu_gpr[rd], t0);
tcg_gen_mov_tl(cpu_gpr[re], t1);
}
break;
default:
return decode_nanomips_32_48_opc(env, ctx);
}
return 2;
}