riscv/rocket-chip
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Reflect ISA changes

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This commit is contained in:
Andrew Waterman
2013-08-23 21:16:28 -07:00
parent ff7b486006
commit d4a0db4575
12 changed files with 558 additions and 597 deletions
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35
rocket/src/main/scala/ctrl.scala
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@ -93,9 +93,7 @@ object XDecode extends DecodeConstants
J-> List(Y, N,N,BR_J, N,N,N,A2_JTYPE,DW_X, FN_ADD, N,M_X, MT_X, N,N,N,WA_X, WB_X, PCR.N,N,N,N,N,N),
JAL-> List(Y, N,N,BR_J, N,N,N,A2_JTYPE,DW_X, FN_ADD, N,M_X, MT_X, N,N,Y,WA_RA,WB_PC, PCR.N,N,N,N,N,N),
JALR_C-> List(Y, N,N,BR_N, Y,N,Y,A2_ITYPE,DW_XPR,FN_ADD, N,M_X, MT_X, N,N,Y,WA_RD,WB_PC, PCR.N,N,N,N,N,N),
JALR_J-> List(Y, N,N,BR_N, Y,N,Y,A2_ITYPE,DW_XPR,FN_ADD, N,M_X, MT_X, N,N,Y,WA_RD,WB_PC, PCR.N,N,N,N,N,N),
JALR_R-> List(Y, N,N,BR_N, Y,N,Y,A2_ITYPE,DW_XPR,FN_ADD, N,M_X, MT_X, N,N,Y,WA_RD,WB_PC, PCR.N,N,N,N,N,N),
JALR-> List(Y, N,N,BR_N, Y,N,Y,A2_ITYPE,DW_XPR,FN_ADD, N,M_X, MT_X, N,N,Y,WA_RD,WB_PC, PCR.N,N,N,N,N,N),
AUIPC-> List(Y, N,N,BR_N, N,N,N,A2_LTYPE,DW_XPR,FN_OP2, N,M_X, MT_X, N,N,Y,WA_RD,WB_PC, PCR.N,N,N,N,N,N),
LB-> List(Y, N,N,BR_N, N,N,Y,A2_ITYPE,DW_XPR,FN_ADD, Y,M_XRD, MT_B, N,N,Y,WA_RD,WB_ALU,PCR.N,N,N,N,N,N),
@ -146,9 +144,9 @@ object XDecode extends DecodeConstants
SUB-> List(Y, N,N,BR_N, N,Y,Y,A2_RTYPE,DW_XPR,FN_SUB, N,M_X, MT_X, N,N,Y,WA_RD,WB_ALU,PCR.N,N,N,N,N,N),
SLT-> List(Y, N,N,BR_N, N,Y,Y,A2_RTYPE,DW_XPR,FN_SLT, N,M_X, MT_X, N,N,Y,WA_RD,WB_ALU,PCR.N,N,N,N,N,N),
SLTU-> List(Y, N,N,BR_N, N,Y,Y,A2_RTYPE,DW_XPR,FN_SLTU, N,M_X, MT_X, N,N,Y,WA_RD,WB_ALU,PCR.N,N,N,N,N,N),
riscvAND-> List(Y, N,N,BR_N, N,Y,Y,A2_RTYPE,DW_XPR,FN_AND, N,M_X, MT_X, N,N,Y,WA_RD,WB_ALU,PCR.N,N,N,N,N,N),
riscvOR-> List(Y, N,N,BR_N, N,Y,Y,A2_RTYPE,DW_XPR,FN_OR, N,M_X, MT_X, N,N,Y,WA_RD,WB_ALU,PCR.N,N,N,N,N,N),
riscvXOR-> List(Y, N,N,BR_N, N,Y,Y,A2_RTYPE,DW_XPR,FN_XOR, N,M_X, MT_X, N,N,Y,WA_RD,WB_ALU,PCR.N,N,N,N,N,N),
AND-> List(Y, N,N,BR_N, N,Y,Y,A2_RTYPE,DW_XPR,FN_AND, N,M_X, MT_X, N,N,Y,WA_RD,WB_ALU,PCR.N,N,N,N,N,N),
OR-> List(Y, N,N,BR_N, N,Y,Y,A2_RTYPE,DW_XPR,FN_OR, N,M_X, MT_X, N,N,Y,WA_RD,WB_ALU,PCR.N,N,N,N,N,N),
XOR-> List(Y, N,N,BR_N, N,Y,Y,A2_RTYPE,DW_XPR,FN_XOR, N,M_X, MT_X, N,N,Y,WA_RD,WB_ALU,PCR.N,N,N,N,N,N),
SLL-> List(Y, N,N,BR_N, N,Y,Y,A2_RTYPE,DW_XPR,FN_SL, N,M_X, MT_X, N,N,Y,WA_RD,WB_ALU,PCR.N,N,N,N,N,N),
SRL-> List(Y, N,N,BR_N, N,Y,Y,A2_RTYPE,DW_XPR,FN_SR, N,M_X, MT_X, N,N,Y,WA_RD,WB_ALU,PCR.N,N,N,N,N,N),
SRA-> List(Y, N,N,BR_N, N,Y,Y,A2_RTYPE,DW_XPR,FN_SRA, N,M_X, MT_X, N,N,Y,WA_RD,WB_ALU,PCR.N,N,N,N,N,N),
@ -226,8 +224,8 @@ object FDecode extends DecodeConstants
FNMADD_D-> List(Y, Y,N,BR_N, N,N,N,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FNMSUB_S-> List(Y, Y,N,BR_N, N,N,N,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FNMSUB_D-> List(Y, Y,N,BR_N, N,N,N,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,WA_RD,WB_X, PCR.N,N,N,N,N,N),
MFTX_S-> List(Y, Y,N,BR_N, N,N,N,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,Y,WA_RD,WB_X, PCR.N,N,N,N,N,N),
MFTX_D-> List(Y, Y,N,BR_N, N,N,N,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,Y,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FMV_X_S-> List(Y, Y,N,BR_N, N,N,N,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,Y,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FMV_X_D-> List(Y, Y,N,BR_N, N,N,N,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,Y,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FCVT_W_S-> List(Y, Y,N,BR_N, N,N,N,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,Y,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FCVT_W_D-> List(Y, Y,N,BR_N, N,N,N,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,Y,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FCVT_WU_S-> List(Y, Y,N,BR_N, N,N,N,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,Y,WA_RD,WB_X, PCR.N,N,N,N,N,N),
@ -242,8 +240,8 @@ object FDecode extends DecodeConstants
FLT_D-> List(Y, Y,N,BR_N, N,N,N,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,Y,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FLE_S-> List(Y, Y,N,BR_N, N,N,N,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,Y,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FLE_D-> List(Y, Y,N,BR_N, N,N,N,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,Y,WA_RD,WB_X, PCR.N,N,N,N,N,N),
MXTF_S-> List(Y, Y,N,BR_N, N,N,Y,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,WA_RD,WB_X, PCR.N,N,N,N,N,N),
MXTF_D-> List(Y, Y,N,BR_N, N,N,Y,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FMV_S_X-> List(Y, Y,N,BR_N, N,N,Y,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FMV_D_X-> List(Y, Y,N,BR_N, N,N,Y,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FCVT_S_W-> List(Y, Y,N,BR_N, N,N,Y,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FCVT_D_W-> List(Y, Y,N,BR_N, N,N,Y,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FCVT_S_WU-> List(Y, Y,N,BR_N, N,N,Y,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,WA_RD,WB_X, PCR.N,N,N,N,N,N),
@ -252,8 +250,8 @@ object FDecode extends DecodeConstants
FCVT_D_L-> List(Y, Y,N,BR_N, N,N,Y,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FCVT_S_LU-> List(Y, Y,N,BR_N, N,N,Y,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FCVT_D_LU-> List(Y, Y,N,BR_N, N,N,Y,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,WA_RD,WB_X, PCR.N,N,N,N,N,N),
MFFSR-> List(Y, Y,N,BR_N, N,N,N,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,Y,WA_RD,WB_X, PCR.N,N,N,N,N,N),
MTFSR-> List(Y, Y,N,BR_N, N,N,Y,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,Y,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FRSR-> List(Y, Y,N,BR_N, N,N,N,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,Y,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FSSR-> List(Y, Y,N,BR_N, N,N,Y,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,Y,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FLW-> List(Y, Y,N,BR_N, N,N,Y,A2_ITYPE,DW_XPR,FN_ADD, Y,M_XRD, MT_W, N,N,N,WA_RD,WB_ALU,PCR.N,N,N,N,N,N),
FLD-> List(Y, Y,N,BR_N, N,N,Y,A2_ITYPE,DW_XPR,FN_ADD, Y,M_XRD, MT_D, N,N,N,WA_RD,WB_ALU,PCR.N,N,N,N,N,N),
FSW-> List(Y, Y,N,BR_N, N,N,Y,A2_BTYPE,DW_XPR,FN_ADD, Y,M_XWR, MT_W, N,N,N,WA_X, WB_ALU,PCR.N,N,N,N,N,N),
@ -269,13 +267,10 @@ object VDecode extends DecodeConstants
// | vec_val | | renx1 mem_val | | wen pcr | | | privileged
// val | | brtype | | | s_alu2 dw alu | mem_cmd mem_type| | | s_wa s_wb | | | | | replay_next
// | | | | | | | | | | | | | | | | | | | | | | | |
VVCFGIVL-> List(Y, N,Y,BR_N, N,N,Y,A2_ZERO, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,Y,WA_RD,WB_ALU,PCR.N,N,N,N,N,Y),
VVCFG-> List(Y, N,Y,BR_N, N,Y,Y,A2_ZERO, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,WA_RD,WB_ALU,PCR.N,N,N,N,N,Y),
VSETCFGVL-> List(Y, N,Y,BR_N, N,N,Y,A2_ZERO, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,Y,WA_RD,WB_ALU,PCR.N,N,N,N,N,Y),
VSETVL-> List(Y, N,Y,BR_N, N,N,Y,A2_ZERO, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,Y,WA_RD,WB_ALU,PCR.N,N,N,N,N,Y),
VF-> List(Y, N,Y,BR_N, N,N,Y,A2_ITYPE,DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,WA_X, WB_ALU,PCR.N,N,N,N,N,N),
VMVV-> List(Y, N,Y,BR_N, N,N,N,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,WA_RD,WB_X, PCR.N,N,N,N,N,N),
VMSV-> List(Y, N,Y,BR_N, N,N,Y,A2_ZERO, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,WA_RD,WB_ALU,PCR.N,N,N,N,N,N),
VFMVV-> List(Y, N,Y,BR_N, N,N,N,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,WA_RD,WB_X, PCR.N,N,N,N,N,N),
FENCE_V_L-> List(Y, N,Y,BR_N, N,N,N,A2_X, DW_X, FN_X, N,M_X, MT_X, N,N,N,WA_X, WB_X, PCR.N,N,N,N,N,N),
FENCE_V_G-> List(Y, N,Y,BR_N, N,N,N,A2_X, DW_X, FN_X, Y,M_FENCE, MT_X, N,N,N,WA_X, WB_X, PCR.N,N,N,N,N,N),
VLD-> List(Y, N,Y,BR_N, N,N,Y,A2_ZERO, DW_XPR,FN_ADD, N,M_X, MT_X, N,N,N,WA_RD,WB_ALU,PCR.N,N,N,N,N,N),
@ -454,22 +449,20 @@ class Control(implicit conf: RocketConfiguration) extends Module
} else (Bool(false), Bool(false))
val (id_interrupt_unmasked, id_interrupt_cause) = checkExceptions(id_interrupts)
val id_interrupt = io.dpath.status.et && id_interrupt_unmasked
val id_interrupt = io.dpath.status.ei && id_interrupt_unmasked
def checkExceptions(x: Seq[(Bool, UInt)]) =
(x.map(_._1).reduce(_||_), PriorityMux(x))
// executing ERET when traps are enabled causes an illegal instruction exception
val illegal_inst = !id_int_val.toBool || (id_eret.toBool && io.dpath.status.et)
// flush pipeline on PCR writes that may have side effects
val id_pcr_flush = id_pcr != PCR.N && id_pcr != PCR.F &&
id_raddr1 != PCR.K0 && id_raddr1 != PCR.K1 && id_raddr1 != PCR.EPC
id_raddr1 != PCR.SUP0 && id_raddr1 != PCR.SUP1 && id_raddr1 != PCR.EPC
val (id_xcpt, id_cause) = checkExceptions(List(
(id_interrupt, id_interrupt_cause),
(io.imem.resp.bits.xcpt_ma, UInt(0)),
(io.imem.resp.bits.xcpt_if, UInt(1)),
(illegal_inst, UInt(2)),
(!id_int_val.toBool, UInt(2)),
(id_privileged && !io.dpath.status.s, UInt(3)),
(id_fp_val && !io.dpath.status.ef, UInt(4)),
(id_syscall, UInt(6)),