riscv/rocket-chip
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Use auto-generated CAUSE constants

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This commit is contained in:
Andrew Waterman
2014-01-21 15:01:54 -08:00
parent 95de358a96
commit 6ba2c1abe5
2 changed files with 44 additions and 14 deletions
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24
rocket/src/main/scala/ctrl.scala
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@ -433,13 +433,13 @@ class Control(implicit conf: RocketConfiguration) extends Module
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)),
(!id_int_val || id_csr_invalid, UInt(2)),
(id_privileged && !io.dpath.status.s, UInt(3)),
((id_fp_val || id_csr_fp) && !io.dpath.status.ef, UInt(4)),
(id_syscall, UInt(6)),
(id_rocc_val && !io.dpath.status.er, UInt(12))))
(io.imem.resp.bits.xcpt_ma, UInt(Causes.misaligned_fetch)),
(io.imem.resp.bits.xcpt_if, UInt(Causes.fault_fetch)),
(!id_int_val || id_csr_invalid, UInt(Causes.illegal_instruction)),
(id_privileged && !io.dpath.status.s, UInt(Causes.privileged_instruction)),
((id_fp_val || id_csr_fp) && !io.dpath.status.ef, UInt(Causes.fp_disabled)),
(id_syscall, UInt(Causes.syscall)),
(id_rocc_val && !io.dpath.status.er, UInt(Causes.accelerator_disabled))))
ex_reg_xcpt_interrupt := id_interrupt && !take_pc && io.imem.resp.valid
when (id_xcpt) { ex_reg_cause := id_cause }
@ -496,7 +496,7 @@ class Control(implicit conf: RocketConfiguration) extends Module
val (ex_xcpt, ex_cause) = checkExceptions(List(
(ex_reg_xcpt_interrupt || ex_reg_xcpt, ex_reg_cause),
(ex_reg_fp_val && io.fpu.illegal_rm, UInt(2))))
(ex_reg_fp_val && io.fpu.illegal_rm, UInt(Causes.illegal_instruction))))
mem_reg_replay := replay_ex && !take_pc_wb
mem_reg_xcpt_interrupt := ex_reg_xcpt_interrupt && !take_pc_wb && !mem_reg_replay_next
@ -533,10 +533,10 @@ class Control(implicit conf: RocketConfiguration) extends Module
val (mem_xcpt, mem_cause) = checkExceptions(List(
(mem_reg_xcpt_interrupt || mem_reg_xcpt, mem_reg_cause),
(mem_reg_mem_val && io.dmem.xcpt.ma.ld, UInt( 8)),
(mem_reg_mem_val && io.dmem.xcpt.ma.st, UInt( 9)),
(mem_reg_mem_val && io.dmem.xcpt.pf.ld, UInt(10)),
(mem_reg_mem_val && io.dmem.xcpt.pf.st, UInt(11))))
(mem_reg_mem_val && io.dmem.xcpt.ma.ld, UInt(Causes.misaligned_load)),
(mem_reg_mem_val && io.dmem.xcpt.ma.st, UInt(Causes.misaligned_store)),
(mem_reg_mem_val && io.dmem.xcpt.pf.ld, UInt(Causes.fault_load)),
(mem_reg_mem_val && io.dmem.xcpt.pf.st, UInt(Causes.fault_store))))
val dcache_kill_mem = mem_reg_wen && io.dmem.replay_next.valid // structural hazard on writeback port
val fpu_kill_mem = mem_reg_fp_val && io.fpu.nack_mem