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add ECALL inst 

Signed-off-by: liangkangnan <liangkangnan@163.com>
pull/1/head
liangkangnan 2020-04-25 17:11:53 +08:00
parent 02bcee9aa9
commit 4a530ab894
1 changed files with 5 additions and 2 deletions
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7
rtl/core/defines.v
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@ -114,6 +114,7 @@
`define INST_RET 32'h00008067 `define INST_RET 32'h00008067
`define INST_FENCE 7'b0001111 `define INST_FENCE 7'b0001111
`define INST_ECALL 32'h73
// J type inst // J type inst
`define INST_TYPE_B 7'b1100011 `define INST_TYPE_B 7'b1100011
@ -139,10 +140,12 @@
`define CSR_MTVEC 12'h305 `define CSR_MTVEC 12'h305
`define CSR_MCAUSE 12'h342 `define CSR_MCAUSE 12'h342
`define CSR_MEPC 12'h341 `define CSR_MEPC 12'h341
`define CSR_MIE 12'h304
`define CSR_MSTATUS 12'h300
`define RomNum 2048 // rom depth(how many words) `define RomNum 4096 // rom depth(how many words)
`define MemNum 2048 // memory depth(how many words) `define MemNum 4096 // memory depth(how many words)
`define MemBus 31:0 `define MemBus 31:0
`define MemAddrBus 31:0 `define MemAddrBus 31:0