| Message ID | 20191124050225.30351-4-mrolnik@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | QEMU AVR 8 bit cores | expand |
On Sunday, November 24, 2019, Michael Rolnik <mrolnik@gmail.com> wrote: > This includes: > - encoding of all 16 bit instructions > - encoding of all 32 bit instructions > > Signed-off-by: Michael Rolnik <mrolnik@gmail.com> > Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> > --- License preamble missing. > target/avr/insn.decode | 175 +++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 175 insertions(+) > create mode 100644 target/avr/insn.decode > > diff --git a/target/avr/insn.decode b/target/avr/insn.decode > new file mode 100644 > index 0000000000..6b387762c6 > --- /dev/null > +++ b/target/avr/insn.decode > @@ -0,0 +1,175 @@ > +# > +# A = [16 .. 31] > +# B = [16 .. 23] > +# C = [24, 26, 28, 30] > +# D = [0, 2, 4, 6, 8, .. 30] > + > +%rd 4:5 > +%rr 9:1 0:4 > + > +&rd_rr rd rr > +&rd_imm rd imm > + > +@op_rd_rr .... .. . ..... .... &rd_rr rd=%rd rr=%rr > +ADD 0000 11 . ..... .... @op_rd_rr > +ADC 0001 11 . ..... .... @op_rd_rr > +AND 0010 00 . ..... .... @op_rd_rr > +CP 0001 01 . ..... .... @op_rd_rr > +CPC 0000 01 . ..... .... @op_rd_rr > +CPSE 0001 00 . ..... .... @op_rd_rr > +EOR 0010 01 . ..... .... @op_rd_rr > +MOV 0010 11 . ..... .... @op_rd_rr > +MUL 1001 11 . ..... .... @op_rd_rr > +OR 0010 10 . ..... .... @op_rd_rr > +SBC 0000 10 . ..... .... @op_rd_rr > +SUB 0001 10 . ..... .... @op_rd_rr > + > + > +%rd_c 4:2 !function=to_C > +%imm6 6:2 0:4 > + > +@op_rd_imm6 .... .... .. .. .... &rd_imm rd=%rd_c imm=%imm6 > +ADIW 1001 0110 .. .. .... @op_rd_imm6 > +SBIW 1001 0111 .. .. .... @op_rd_imm6 > + > + > +%rd_a 4:4 !function=to_A > +%rr_a 0:4 !function=to_A > +%rd_d 4:4 !function=to_D > +%rr_d 0:4 !function=to_D > +%imm8 8:4 0:4 > + > +@op_rd_imm8 .... .... .... .... &rd_imm rd=%rd_a imm=%imm8 > +ANDI 0111 .... .... .... @op_rd_imm8 > +CPI 0011 .... .... .... @op_rd_imm8 > +LDI 1110 .... .... .... @op_rd_imm8 > +ORI 0110 .... .... .... @op_rd_imm8 > +SBCI 0100 .... .... .... @op_rd_imm8 > +SUBI 0101 .... .... .... @op_rd_imm8 > + > + > +@op_rd .... ... rd:5 .... > +ASR 1001 010 ..... 0101 @op_rd > +COM 1001 010 ..... 0000 @op_rd > +DEC 1001 010 ..... 1010 @op_rd > +ELPM2 1001 000 ..... 0110 @op_rd > +ELPMX 1001 000 ..... 0111 @op_rd > +INC 1001 010 ..... 0011 @op_rd > +LDX1 1001 000 ..... 1100 @op_rd > +LDX2 1001 000 ..... 1101 @op_rd > +LDX3 1001 000 ..... 1110 @op_rd > +LDY2 1001 000 ..... 1001 @op_rd > +LDY3 1001 000 ..... 1010 @op_rd > +LDZ2 1001 000 ..... 0001 @op_rd > +LDZ3 1001 000 ..... 0010 @op_rd > +LPM2 1001 000 ..... 0100 @op_rd > +LPMX 1001 000 ..... 0101 @op_rd > +LSR 1001 010 ..... 0110 @op_rd > +NEG 1001 010 ..... 0001 @op_rd > +POP 1001 000 ..... 1111 @op_rd > +PUSH 1001 001 ..... 1111 @op_rd > +ROR 1001 010 ..... 0111 @op_rd > +STY2 1001 001 ..... 1001 @op_rd > +STY3 1001 001 ..... 1010 @op_rd > +STZ2 1001 001 ..... 0001 @op_rd > +STZ3 1001 001 ..... 0010 @op_rd > +SWAP 1001 010 ..... 0010 @op_rd > + > + > +@op_bit .... .... . bit:3 .... > +BCLR 1001 0100 1 ... 1000 @op_bit > +BSET 1001 0100 0 ... 1000 @op_bit > + > + > +@op_rd_bit .... ... rd:5 . bit:3 > +BLD 1111 100 ..... 0 ... @op_rd_bit > +BST 1111 101 ..... 0 ... @op_rd_bit > + > + > +@op_bit_imm .... .. imm:s7 bit:3 > +BRBC 1111 01 ....... ... @op_bit_imm > +BRBS 1111 00 ....... ... @op_bit_imm > + > + > +BREAK 1001 0101 1001 1000 > +EICALL 1001 0101 0001 1001 > +EIJMP 1001 0100 0001 1001 > +ELPM1 1001 0101 1101 1000 > +ICALL 1001 0101 0000 1001 > +IJMP 1001 0100 0000 1001 > +LPM1 1001 0101 1100 1000 > +NOP 0000 0000 0000 0000 > +RET 1001 0101 0000 1000 > +RETI 1001 0101 0001 1000 > +SLEEP 1001 0101 1000 1000 > +SPM 1001 0101 1110 1000 > +SPMX 1001 0101 1111 1000 > +WDR 1001 0101 1010 1000 > + > + > +@op_reg_bit .... .... reg:5 bit:3 > +CBI 1001 1000 ..... ... @op_reg_bit > +SBI 1001 1010 ..... ... @op_reg_bit > +SBIC 1001 1001 ..... ... @op_reg_bit > +SBIS 1001 1011 ..... ... @op_reg_bit > + > + > +DES 1001 0100 imm:4 1011 > + > + > +%rd_b 4:3 !function=to_B > +%rr_b 0:3 !function=to_B > +@fmul .... .... . ... . ... &rd_rr rd=%rd_b rr=%rr_b > +FMUL 0000 0011 0 ... 1 ... @fmul > +FMULS 0000 0011 1 ... 0 ... @fmul > +FMULSU 0000 0011 1 ... 1 ... @fmul > +MULSU 0000 0011 0 ... 0 ... @fmul > + > + > +%io_imm 9:2 0:4 > +@io_rd_imm .... . .. ..... .... &rd_imm rd=%rd imm=%io_imm > +IN 1011 0 .. ..... .... @io_rd_imm > +OUT 1011 1 .. ..... .... @io_rd_imm > + > + > +XCH 1001 001 rd:5 0100 > +LAC 1001 001 rd:5 0110 > +LAS 1001 001 rd:5 0101 > +LAT 1001 001 rd:5 0111 > +STX1 1001 001 rr:5 1100 > +STX2 1001 001 rr:5 1101 > +STX3 1001 001 rr:5 1110 > + > + > +%ldst_d_imm 13:1 10:2 0:3 > +@ldst_d .. . . .. . rd:5 . ... &rd_imm imm=%ldst_d_imm > +LDDY 10 . 0 .. 0 ..... 1 ... @ldst_d > +LDDZ 10 . 0 .. 0 ..... 0 ... @ldst_d > +STDY 10 . 0 .. 1 ..... 1 ... @ldst_d > +STDZ 10 . 0 .. 1 ..... 0 ... @ldst_d > + > + > +MOVW 0000 0001 .... .... &rd_rr rd=%rd_d rr=%rr_d > +MULS 0000 0010 .... .... &rd_rr rd=%rd_a rr=%rr_a > + > +RCALL 1101 imm:s12 > +RJMP 1100 imm:s12 > + > +SBRC 1111 110 rr:5 0 bit:3 > +SBRS 1111 111 rr:5 0 bit:3 > + > +# The 22-bit immediate is partially in the opcode word, > +# and partially in the next. Use append_16 to build the > +# complete 22-bit value. > +%imm_call 4:5 0:1 !function=append_16 > +CALL 1001 010 ..... 111 . imm=%imm_call > +JMP 1001 010 ..... 110 . imm=%imm_call > + > + > +# The 16-bit immediate is completely in the next word. > +# Fields cannot be defined with no bits, so we cannot play > +# the same trick and append to a zero-bit value. > +# Defer reading the immediate until trans_{LDS,STS}. > +@ldst_s .... ... rd:5 .... imm=0 > +LDS 1001 000 ..... 0000 @ldst_s > +STS 1001 001 ..... 0000 @ldst_s > -- > 2.17.2 (Apple Git-113) > >
diff --git a/target/avr/insn.decode b/target/avr/insn.decode new file mode 100644 index 0000000000..6b387762c6 --- /dev/null +++ b/target/avr/insn.decode @@ -0,0 +1,175 @@ +# +# A = [16 .. 31] +# B = [16 .. 23] +# C = [24, 26, 28, 30] +# D = [0, 2, 4, 6, 8, .. 30] + +%rd 4:5 +%rr 9:1 0:4 + +&rd_rr rd rr +&rd_imm rd imm + +@op_rd_rr .... .. . ..... .... &rd_rr rd=%rd rr=%rr +ADD 0000 11 . ..... .... @op_rd_rr +ADC 0001 11 . ..... .... @op_rd_rr +AND 0010 00 . ..... .... @op_rd_rr +CP 0001 01 . ..... .... @op_rd_rr +CPC 0000 01 . ..... .... @op_rd_rr +CPSE 0001 00 . ..... .... @op_rd_rr +EOR 0010 01 . ..... .... @op_rd_rr +MOV 0010 11 . ..... .... @op_rd_rr +MUL 1001 11 . ..... .... @op_rd_rr +OR 0010 10 . ..... .... @op_rd_rr +SBC 0000 10 . ..... .... @op_rd_rr +SUB 0001 10 . ..... .... @op_rd_rr + + +%rd_c 4:2 !function=to_C +%imm6 6:2 0:4 + +@op_rd_imm6 .... .... .. .. .... &rd_imm rd=%rd_c imm=%imm6 +ADIW 1001 0110 .. .. .... @op_rd_imm6 +SBIW 1001 0111 .. .. .... @op_rd_imm6 + + +%rd_a 4:4 !function=to_A +%rr_a 0:4 !function=to_A +%rd_d 4:4 !function=to_D +%rr_d 0:4 !function=to_D +%imm8 8:4 0:4 + +@op_rd_imm8 .... .... .... .... &rd_imm rd=%rd_a imm=%imm8 +ANDI 0111 .... .... .... @op_rd_imm8 +CPI 0011 .... .... .... @op_rd_imm8 +LDI 1110 .... .... .... @op_rd_imm8 +ORI 0110 .... .... .... @op_rd_imm8 +SBCI 0100 .... .... .... @op_rd_imm8 +SUBI 0101 .... .... .... @op_rd_imm8 + + +@op_rd .... ... rd:5 .... +ASR 1001 010 ..... 0101 @op_rd +COM 1001 010 ..... 0000 @op_rd +DEC 1001 010 ..... 1010 @op_rd +ELPM2 1001 000 ..... 0110 @op_rd +ELPMX 1001 000 ..... 0111 @op_rd +INC 1001 010 ..... 0011 @op_rd +LDX1 1001 000 ..... 1100 @op_rd +LDX2 1001 000 ..... 1101 @op_rd +LDX3 1001 000 ..... 1110 @op_rd +LDY2 1001 000 ..... 1001 @op_rd +LDY3 1001 000 ..... 1010 @op_rd +LDZ2 1001 000 ..... 0001 @op_rd +LDZ3 1001 000 ..... 0010 @op_rd +LPM2 1001 000 ..... 0100 @op_rd +LPMX 1001 000 ..... 0101 @op_rd +LSR 1001 010 ..... 0110 @op_rd +NEG 1001 010 ..... 0001 @op_rd +POP 1001 000 ..... 1111 @op_rd +PUSH 1001 001 ..... 1111 @op_rd +ROR 1001 010 ..... 0111 @op_rd +STY2 1001 001 ..... 1001 @op_rd +STY3 1001 001 ..... 1010 @op_rd +STZ2 1001 001 ..... 0001 @op_rd +STZ3 1001 001 ..... 0010 @op_rd +SWAP 1001 010 ..... 0010 @op_rd + + +@op_bit .... .... . bit:3 .... +BCLR 1001 0100 1 ... 1000 @op_bit +BSET 1001 0100 0 ... 1000 @op_bit + + +@op_rd_bit .... ... rd:5 . bit:3 +BLD 1111 100 ..... 0 ... @op_rd_bit +BST 1111 101 ..... 0 ... @op_rd_bit + + +@op_bit_imm .... .. imm:s7 bit:3 +BRBC 1111 01 ....... ... @op_bit_imm +BRBS 1111 00 ....... ... @op_bit_imm + + +BREAK 1001 0101 1001 1000 +EICALL 1001 0101 0001 1001 +EIJMP 1001 0100 0001 1001 +ELPM1 1001 0101 1101 1000 +ICALL 1001 0101 0000 1001 +IJMP 1001 0100 0000 1001 +LPM1 1001 0101 1100 1000 +NOP 0000 0000 0000 0000 +RET 1001 0101 0000 1000 +RETI 1001 0101 0001 1000 +SLEEP 1001 0101 1000 1000 +SPM 1001 0101 1110 1000 +SPMX 1001 0101 1111 1000 +WDR 1001 0101 1010 1000 + + +@op_reg_bit .... .... reg:5 bit:3 +CBI 1001 1000 ..... ... @op_reg_bit +SBI 1001 1010 ..... ... @op_reg_bit +SBIC 1001 1001 ..... ... @op_reg_bit +SBIS 1001 1011 ..... ... @op_reg_bit + + +DES 1001 0100 imm:4 1011 + + +%rd_b 4:3 !function=to_B +%rr_b 0:3 !function=to_B +@fmul .... .... . ... . ... &rd_rr rd=%rd_b rr=%rr_b +FMUL 0000 0011 0 ... 1 ... @fmul +FMULS 0000 0011 1 ... 0 ... @fmul +FMULSU 0000 0011 1 ... 1 ... @fmul +MULSU 0000 0011 0 ... 0 ... @fmul + + +%io_imm 9:2 0:4 +@io_rd_imm .... . .. ..... .... &rd_imm rd=%rd imm=%io_imm +IN 1011 0 .. ..... .... @io_rd_imm +OUT 1011 1 .. ..... .... @io_rd_imm + + +XCH 1001 001 rd:5 0100 +LAC 1001 001 rd:5 0110 +LAS 1001 001 rd:5 0101 +LAT 1001 001 rd:5 0111 +STX1 1001 001 rr:5 1100 +STX2 1001 001 rr:5 1101 +STX3 1001 001 rr:5 1110 + + +%ldst_d_imm 13:1 10:2 0:3 +@ldst_d .. . . .. . rd:5 . ... &rd_imm imm=%ldst_d_imm +LDDY 10 . 0 .. 0 ..... 1 ... @ldst_d +LDDZ 10 . 0 .. 0 ..... 0 ... @ldst_d +STDY 10 . 0 .. 1 ..... 1 ... @ldst_d +STDZ 10 . 0 .. 1 ..... 0 ... @ldst_d + + +MOVW 0000 0001 .... .... &rd_rr rd=%rd_d rr=%rr_d +MULS 0000 0010 .... .... &rd_rr rd=%rd_a rr=%rr_a + +RCALL 1101 imm:s12 +RJMP 1100 imm:s12 + +SBRC 1111 110 rr:5 0 bit:3 +SBRS 1111 111 rr:5 0 bit:3 + +# The 22-bit immediate is partially in the opcode word, +# and partially in the next. Use append_16 to build the +# complete 22-bit value. +%imm_call 4:5 0:1 !function=append_16 +CALL 1001 010 ..... 111 . imm=%imm_call +JMP 1001 010 ..... 110 . imm=%imm_call + + +# The 16-bit immediate is completely in the next word. +# Fields cannot be defined with no bits, so we cannot play +# the same trick and append to a zero-bit value. +# Defer reading the immediate until trans_{LDS,STS}. +@ldst_s .... ... rd:5 .... imm=0 +LDS 1001 000 ..... 0000 @ldst_s +STS 1001 001 ..... 0000 @ldst_s