operands.isa

来自「M5,一个功能强大的多处理器系统模拟器.很多针对处理器架构,性能的研究都使用它作」· ISA 代码 · 共 166 行

def operand_types {{
    'sb' : ('signed int', 8),
    'ub' : ('unsigned int', 8),
    'shw' : ('signed int', 16),
    'uhw' : ('unsigned int', 16),
    'sw' : ('signed int', 32),
    'uw' : ('unsigned int', 32),
    'sdw' : ('signed int', 64),
    'udw' : ('unsigned int', 64),
    'tudw' : ('twin64 int', 64),
    'tuw' : ('twin32 int', 32),
    'sf' : ('float', 32),
    'df' : ('float', 64),
    'qf' : ('float', 128)
}};

output header {{
    // A function to "decompress" double and quad floating point
    // register numbers stuffed into 5 bit fields. These have their
    // MSB put in the LSB position but are otherwise normal.
    static inline unsigned int dfpr(unsigned int regNum)
    {
        return (regNum & (~1)) | ((regNum & 1) << 5);
    }

    static inline unsigned int dfprl(unsigned int regNum)
    {
        return dfpr(regNum) & (~0x1);
    }

    static inline unsigned int dfprh(unsigned int regNum)
    {
        return dfpr(regNum) | 0x1;
    }
}};

def operands {{
    # Int regs default to unsigned, but code should not count on this.
    # For clarity, descriptions that depend on unsigned behavior should
    # explicitly specify '.uq'.

    'Rd': 		('IntReg', 'udw', 'RD', 'IsInteger', 1),
    # The Rd from the previous window
    'Rd_prev':		('IntReg', 'udw', 'RD + NumIntArchRegs + NumMicroIntRegs', 'IsInteger', 2),
    # The Rd from the next window
    'Rd_next':		('IntReg', 'udw', 'RD + 2 * NumIntArchRegs + NumMicroIntRegs', 'IsInteger', 3),
    # For microcoded twin load instructions, RdTwin appears in the "code"
    # for the instruction is replaced by RdLow or RdHigh by the format
    # before it's processed by the iop.
    # The low (even) register of a two register pair
    'RdLow': 		('IntReg', 'udw', 'RD & (~1)', 'IsInteger', 4),
    # The high (odd) register of a two register pair
    'RdHigh':		('IntReg', 'udw', 'RD | 1', 'IsInteger', 5),
    'Rs1': 		('IntReg', 'udw', 'RS1', 'IsInteger', 6),
    'Rs2': 		('IntReg', 'udw', 'RS2', 'IsInteger', 7),
    # A microcode register. Right now, this is the only one.
    'uReg0':		('IntReg', 'udw', 'NumIntArchRegs', 'IsInteger', 8),
    # Because double and quad precision register numbers are decoded
    # differently, they get different operands. The single precision versions
    # have an s post pended to their name.
    'Frds':		('FloatReg', 'sf', 'RD', 'IsFloating', 10),
    #'Frd':		('FloatReg', 'df', 'dfpr(RD)', 'IsFloating', 10),
    'Frd_low':		('FloatReg', 'uw', 'dfprl(RD)', 'IsFloating', 10),
    'Frd_high':		('FloatReg', 'uw', 'dfprh(RD)', 'IsFloating', 10),
    # Each Frd_N refers to the Nth double precision register from Frd.
    # Note that this adds twice N to the register number.
    #'Frd_0':		('FloatReg', 'df', 'dfpr(RD)', 'IsFloating', 10),
    'Frd_0_low':	('FloatReg', 'uw', 'dfprl(RD)', 'IsFloating', 10),
    'Frd_0_high':	('FloatReg', 'uw', 'dfprh(RD)', 'IsFloating', 10),
    #'Frd_1':		('FloatReg', 'df', 'dfpr(RD) + 2', 'IsFloating', 10),
    'Frd_1_low':	('FloatReg', 'uw', 'dfprl(RD) + 2', 'IsFloating', 10),
    'Frd_1_high':	('FloatReg', 'uw', 'dfprh(RD) + 2', 'IsFloating', 10),
    #'Frd_2':		('FloatReg', 'df', 'dfpr(RD) + 4', 'IsFloating', 10),
    'Frd_2_low':	('FloatReg', 'uw', 'dfprl(RD) + 4', 'IsFloating', 10),
    'Frd_2_high':	('FloatReg', 'uw', 'dfprh(RD) + 4', 'IsFloating', 10),
    #'Frd_3':		('FloatReg', 'df', 'dfpr(RD) + 6', 'IsFloating', 10),
    'Frd_3_low':	('FloatReg', 'uw', 'dfprl(RD) + 6', 'IsFloating', 10),
    'Frd_3_high':	('FloatReg', 'uw', 'dfprh(RD) + 6', 'IsFloating', 10),
    #'Frd_4':		('FloatReg', 'df', 'dfpr(RD) + 8', 'IsFloating', 10),
    'Frd_4_low':	('FloatReg', 'uw', 'dfprl(RD) + 8', 'IsFloating', 10),
    'Frd_4_high':	('FloatReg', 'uw', 'dfprh(RD) + 8', 'IsFloating', 10),
    #'Frd_5':		('FloatReg', 'df', 'dfpr(RD) + 10', 'IsFloating', 10),
    'Frd_5_low':	('FloatReg', 'uw', 'dfprl(RD) + 10', 'IsFloating', 10),
    'Frd_5_high':	('FloatReg', 'uw', 'dfprh(RD) + 10', 'IsFloating', 10),
    #'Frd_6':		('FloatReg', 'df', 'dfpr(RD) + 12', 'IsFloating', 10),
    'Frd_6_low':	('FloatReg', 'uw', 'dfprl(RD) + 12', 'IsFloating', 10),
    'Frd_6_high':	('FloatReg', 'uw', 'dfprh(RD) + 12', 'IsFloating', 10),
    #'Frd_7':		('FloatReg', 'df', 'dfpr(RD) + 14', 'IsFloating', 10),
    'Frd_7_low':	('FloatReg', 'uw', 'dfprl(RD) + 14', 'IsFloating', 10),
    'Frd_7_high':	('FloatReg', 'uw', 'dfprh(RD) + 14', 'IsFloating', 10),
    'Frs1s':		('FloatReg', 'sf', 'RS1', 'IsFloating', 11),
    #'Frs1':		('FloatReg', 'df', 'dfpr(RS1)', 'IsFloating', 11),
    'Frs1_low':		('FloatReg', 'uw', 'dfprl(RS1)', 'IsFloating', 11),
    'Frs1_high':	('FloatReg', 'uw', 'dfprh(RS1)', 'IsFloating', 11),
    'Frs2s':		('FloatReg', 'sf', 'RS2', 'IsFloating', 12),
    #'Frs2':		('FloatReg', 'df', 'dfpr(RS2)', 'IsFloating', 12),
    'Frs2_low':		('FloatReg', 'uw', 'dfprl(RS2)', 'IsFloating', 12),
    'Frs2_high':	('FloatReg', 'uw', 'dfprh(RS2)', 'IsFloating', 12),
    'NPC': 		('NPC', 'udw', None, ( None, None, 'IsControl' ), 31),
    'NNPC':		('NNPC', 'udw', None, (None, None, 'IsControl' ), 32),
    # Registers which are used explicitly in instructions
    'R0':  		('IntReg', 'udw', '0', None, 6),
    'R1':  		('IntReg', 'udw', '1', None, 7),
    'R15': 		('IntReg', 'udw', '15', 'IsInteger', 8),
    'R16': 		('IntReg', 'udw', '16', None, 9),
    'O0':               ('IntReg', 'udw', '8', 'IsInteger', 10),
    'O1':               ('IntReg', 'udw', '9', 'IsInteger', 11),
    'O2':               ('IntReg', 'udw', '10', 'IsInteger', 12),
    'O3':               ('IntReg', 'udw', '11', 'IsInteger', 13),
    'O4':               ('IntReg', 'udw', '12', 'IsInteger', 14),
    'O5':               ('IntReg', 'udw', '13', 'IsInteger', 15),

    # Control registers
#   'Y':		('ControlReg', 'udw', 'MISCREG_Y', None, 40),
#   'Ccr':		('ControlReg', 'udw', 'MISCREG_CCR', None, 41),
    'Y':		('IntReg', 'udw', 'NumIntArchRegs + 1', None, 40),
    'Ccr':		('IntReg', 'udw', 'NumIntArchRegs + 2', None, 41),
    'Asi':		('ControlReg', 'udw', 'MISCREG_ASI', None, 42),
    'Fprs':		('ControlReg', 'udw', 'MISCREG_FPRS', None, 43),
    'Pcr':		('ControlReg', 'udw', 'MISCREG_PCR', None, 44),
    'Pic':		('ControlReg', 'udw', 'MISCREG_PIC', None, 45),
#   'Gsr':		('ControlReg', 'udw', 'MISCREG_GSR', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 46),
    'Gsr':		('IntReg', 'udw', 'NumIntArchRegs + 8', None, 46),
    'Softint':		('ControlReg', 'udw', 'MISCREG_SOFTINT', None, 47),
    'SoftintSet':	('ControlReg', 'udw', 'MISCREG_SOFTINT_SET', None, 48),
    'SoftintClr':	('ControlReg', 'udw', 'MISCREG_SOFTINT_CLR', None, 49),
    'TickCmpr':		('ControlReg', 'udw', 'MISCREG_TICK_CMPR', None, 50),
    'Stick':		('ControlReg', 'udw', 'MISCREG_STICK', None, 51),
    'StickCmpr':	('ControlReg', 'udw', 'MISCREG_STICK_CMPR', None, 52),

    'Tpc':		('ControlReg', 'udw', 'MISCREG_TPC', None, 53),
    'Tnpc':		('ControlReg', 'udw', 'MISCREG_TNPC', None, 54),
    'Tstate':		('ControlReg', 'udw', 'MISCREG_TSTATE', None, 55),
    'Tt':		('ControlReg', 'udw', 'MISCREG_TT', None, 56),
    'Tick':		('ControlReg', 'udw', 'MISCREG_TICK', None, 57),
    'Tba':		('ControlReg', 'udw', 'MISCREG_TBA', None, 58),
    'Pstate':		('ControlReg', 'udw', 'MISCREG_PSTATE', None, 59),
    'Tl':		('ControlReg', 'udw', 'MISCREG_TL', None, 60),
    'Pil':		('ControlReg', 'udw', 'MISCREG_PIL', None, 61),
    'Cwp':		('ControlReg', 'udw', 'MISCREG_CWP', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 62),
#   'Cansave':		('ControlReg', 'udw', 'MISCREG_CANSAVE', None, 63),
#   'Canrestore':	('ControlReg', 'udw', 'MISCREG_CANRESTORE', None, 64),
#   'Cleanwin':		('ControlReg', 'udw', 'MISCREG_CLEANWIN', None, 65),
#   'Otherwin':		('ControlReg', 'udw', 'MISCREG_OTHERWIN', None, 66),
#   'Wstate':		('ControlReg', 'udw', 'MISCREG_WSTATE', None, 67),
    'Cansave':		('IntReg', 'udw', 'NumIntArchRegs + 3', None, 63),
    'Canrestore':	('IntReg', 'udw', 'NumIntArchRegs + 4', None, 64),
    'Cleanwin':		('IntReg', 'udw', 'NumIntArchRegs + 5', None, 65),
    'Otherwin':		('IntReg', 'udw', 'NumIntArchRegs + 6', None, 66),
    'Wstate':		('IntReg', 'udw', 'NumIntArchRegs + 7', None, 67),
    'Gl':               ('ControlReg', 'udw', 'MISCREG_GL', None, 68),

    'Hpstate':		('ControlReg', 'udw', 'MISCREG_HPSTATE', None, 69),
    'Htstate':		('ControlReg', 'udw', 'MISCREG_HTSTATE', None, 70),
    'Hintp':		('ControlReg', 'udw', 'MISCREG_HINTP', None, 71),
    'Htba':		('ControlReg', 'udw', 'MISCREG_HTBA', None, 72),
    'HstickCmpr':	('ControlReg', 'udw', 'MISCREG_HSTICK_CMPR', None, 73),
    'Hver':		('ControlReg', 'udw', 'MISCREG_HVER', None, 74),
    'StrandStsReg':	('ControlReg', 'udw', 'MISCREG_STRAND_STS_REG', None, 75),

    'Fsr':		('ControlReg', 'udw', 'MISCREG_FSR', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 80),
    # Mem gets a large number so it's always last
    'Mem': 		('Mem', 'udw', None, ('IsMemRef', 'IsLoad', 'IsStore'), 100)

}};