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author | Joel Sing <joel@sing.id.au> | 2024-06-28 07:00:13 +1000 |
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committer | GitHub <noreply@github.com> | 2024-06-27 14:00:13 -0700 |
commit | 5c03ec5c5cfbbfbc1c12475cbd3a20e8d43f7329 (patch) | |
tree | 9bf5c8207c1633f17c97d8eb08458b8f1c6ce002 | |
parent | 5ce8977a5961a6bbfc1638e6676e60489665d882 (diff) | |
download | riscv-opcodes-5c03ec5c5cfbbfbc1c12475cbd3a20e8d43f7329.zip riscv-opcodes-5c03ec5c5cfbbfbc1c12475cbd3a20e8d43f7329.tar.gz riscv-opcodes-5c03ec5c5cfbbfbc1c12475cbd3a20e8d43f7329.tar.bz2 |
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.
-rwxr-xr-x | parse.py | 4 |
1 files changed, 3 insertions, 1 deletions
@@ -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: |