From 5c03ec5c5cfbbfbc1c12475cbd3a20e8d43f7329 Mon Sep 17 00:00:00 2001 From: Joel Sing Date: Fri, 28 Jun 2024 07:00:13 +1000 Subject: Include rs1 values in Go instruction opcodes. (#254) Some of the instructions in the V extension encode part of the opcode in the rs1 field. These values are not currently included in the Go instruction opcodes - fix this by adding an rs1 field and populating it with the relevant values. --- parse.py | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'parse.py') diff --git a/parse.py b/parse.py index 8a50caf..4553e06 100755 --- a/parse.py +++ b/parse.py @@ -941,6 +941,7 @@ import "cmd/internal/obj" type inst struct { opcode uint32 funct3 uint32 + rs1 uint32 rs2 uint32 csr int64 funct7 uint32 @@ -960,11 +961,12 @@ func encode(a obj.As) *inst { enc_match = int(instr_dict[i]['match'],0) opcode = (enc_match >> 0) & ((1<<7)-1) funct3 = (enc_match >> 12) & ((1<<3)-1) + rs1 = (enc_match >> 15) & ((1<<5)-1) rs2 = (enc_match >> 20) & ((1<<5)-1) csr = (enc_match >> 20) & ((1<<12)-1) funct7 = (enc_match >> 25) & ((1<<7)-1) instr_str += f''' case A{i.upper().replace("_","")}: - return &inst{{ {hex(opcode)}, {hex(funct3)}, {hex(rs2)}, {signed(csr,12)}, {hex(funct7)} }} + return &inst{{ {hex(opcode)}, {hex(funct3)}, {hex(rs1)}, {hex(rs2)}, {signed(csr,12)}, {hex(funct7)} }} ''' with open('inst.go','w') as file: -- cgit v1.1