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Merge pull request #70 from antonblanchard/badly-named-carry

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Rename OP_SUBFC -> OP_SUBFE, OP_ADDC -> OP_ADDE
pull/71/head
Anton Blanchard 5 years ago committed by GitHub
parent ba783fddd5 5a6f8d26d1
commit cd4da50650
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 13 additions and 13 deletions
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18
decode1.vhdl
Unescape Escape View File

@ -30,16 +30,16 @@ architecture behaviour of decode1 is
-- op 1 2 3 in out in out len ext 32 sgn pipe
PPC_ILLEGAL => (ALU, OP_ILLEGAL, NONE, NONE, NONE, NONE, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0', '1'),
PPC_ADD => (ALU, OP_ADD, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0', '1'),
PPC_ADDC => (ALU, OP_ADDC, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '1', NONE, '0', '0', '0', '0', '0', '0', RC, '0', '1'),
PPC_ADDE => (ALU, OP_ADDC, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '1', '1', NONE, '0', '0', '0', '0', '0', '0', RC, '0', '1'),
PPC_ADDC => (ALU, OP_ADDE, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '1', NONE, '0', '0', '0', '0', '0', '0', RC, '0', '1'),
PPC_ADDE => (ALU, OP_ADDE, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '1', '1', NONE, '0', '0', '0', '0', '0', '0', RC, '0', '1'),
--PPC_ADDEX
PPC_ADDI => (ALU, OP_ADD, RA_OR_ZERO, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '1'),
PPC_ADDIC => (ALU, OP_ADDC, RA, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '1', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '1'),
PPC_ADDIC_RC => (ALU, OP_ADDC, RA, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '1', NONE, '0', '0', '0', '0', '0', '0', ONE, '0', '1'),
PPC_ADDIC => (ALU, OP_ADDE, RA, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '1', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '1'),
PPC_ADDIC_RC => (ALU, OP_ADDE, RA, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '1', NONE, '0', '0', '0', '0', '0', '0', ONE, '0', '1'),
PPC_ADDIS => (ALU, OP_ADD, RA_OR_ZERO, CONST_SI_HI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '1', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '1'),
--PPC_ADDME
--PPC_ADDPCIS
PPC_ADDZE => (ALU, OP_ADDC, RA, NONE, NONE, RT, NONE, NONE, NONE, '0', '0', '1', '1', NONE, '0', '0', '0', '0', '0', '0', RC, '0', '1'),
PPC_ADDZE => (ALU, OP_ADDE, RA, NONE, NONE, RT, NONE, NONE, NONE, '0', '0', '1', '1', NONE, '0', '0', '0', '0', '0', '0', RC, '0', '1'),
PPC_AND => (ALU, OP_AND, RS, RB, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0', '1'),
PPC_ANDC => (ALU, OP_ANDC, RS, RB, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0', '1'),
PPC_ANDI_RC => (ALU, OP_AND, RS, CONST_UI, NONE, RA, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', ONE, '0', '1'),
@ -210,11 +210,11 @@ architecture behaviour of decode1 is
PPC_STWUX => (LDST, OP_STORE, RA, RB, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is4B, '0', '0', '1', '0', '0', '0', NONE, '0', '1'),
PPC_STWX => (LDST, OP_STORE, RA_OR_ZERO, RB, RS, NONE, NONE, NONE, NONE, '0', '0', '0', '0', is4B, '0', '0', '0', '0', '0', '0', NONE, '0', '1'),
PPC_SUBF => (ALU, OP_SUBF, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', RC, '0', '1'),
PPC_SUBFC => (ALU, OP_SUBFC, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '1', NONE, '0', '0', '0', '0', '0', '0', RC, '0', '1'),
PPC_SUBFE => (ALU, OP_SUBFC, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '1', '1', NONE, '0', '0', '0', '0', '0', '0', RC, '0', '1'),
PPC_SUBFIC => (ALU, OP_SUBFC, RA, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '1', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '1'),
PPC_SUBFC => (ALU, OP_SUBFE, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '1', NONE, '0', '0', '0', '0', '0', '0', RC, '0', '1'),
PPC_SUBFE => (ALU, OP_SUBFE, RA, RB, NONE, RT, NONE, NONE, NONE, '0', '0', '1', '1', NONE, '0', '0', '0', '0', '0', '0', RC, '0', '1'),
PPC_SUBFIC => (ALU, OP_SUBFE, RA, CONST_SI, NONE, RT, NONE, NONE, NONE, '0', '0', '0', '1', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '1'),
--PPC_SUBFME
PPC_SUBFZE => (ALU, OP_SUBFC, RA, NONE, NONE, RT, NONE, NONE, NONE, '0', '0', '1', '1', NONE, '0', '0', '0', '0', '0', '0', RC, '0', '1'),
PPC_SUBFZE => (ALU, OP_SUBFE, RA, NONE, NONE, RT, NONE, NONE, NONE, '0', '0', '1', '1', NONE, '0', '0', '0', '0', '0', '0', RC, '0', '1'),
PPC_SYNC => (ALU, OP_NOP, NONE, NONE, NONE, NONE, NONE, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '1'),
--PPC_TD
PPC_TDI => (ALU, OP_TDI, RA, CONST_SI, NONE, NONE, TOO, NONE, NONE, '0', '0', '0', '0', NONE, '0', '0', '0', '0', '0', '0', NONE, '0', '1'),

4
decode_types.vhdl
Unescape Escape View File

@ -39,7 +39,7 @@ package decode_types is
PPC_TDI, PPC_TW, PPC_TWI, PPC_XOR, PPC_XORI, PPC_XORIS,
PPC_SIM_CONFIG);

type insn_type_t is (OP_ILLEGAL, OP_NOP, OP_ADD, OP_ADDC, OP_ADDEX, OP_ADDME,
type insn_type_t is (OP_ILLEGAL, OP_NOP, OP_ADD, OP_ADDE, OP_ADDEX, OP_ADDME,
OP_ADDPCIS, OP_AND, OP_ANDC, OP_ATTN, OP_B, OP_BA, OP_BC,
OP_BCA, OP_BCCTR, OP_BCLA, OP_BCLR, OP_BCTAR, OP_BPERM, OP_CMP,
OP_CMPB, OP_CMPEQB, OP_CMPL, OP_CMPRB,
@ -58,7 +58,7 @@ package decode_types is
OP_PRTYW, OP_RLDCL, OP_RLDCR, OP_RLDIC, OP_RLDICL, OP_RLDICR,
OP_RLDIMI, OP_RLWIMI, OP_RLWINM, OP_RLWNM, OP_SETB, OP_SLD,
OP_SLW, OP_SRAD, OP_SRADI, OP_SRAW, OP_SRAWI, OP_SRD, OP_SRW,
OP_SUBF, OP_SUBFC, OP_SUBFME, OP_SYNC, OP_TD, OP_TDI, OP_TW,
OP_SUBF, OP_SUBFE, OP_SUBFME, OP_SYNC, OP_TD, OP_TDI, OP_TW,
OP_TWI, OP_XOR, OP_SIM_CONFIG);

type input_reg_a_t is (NONE, RA, RA_OR_ZERO, RS);

4
execute1.vhdl
Unescape Escape View File

@ -88,7 +88,7 @@ begin
when OP_ADD =>
result := ppc_add(e_in.read_data1, e_in.read_data2);
result_en := 1;
when OP_ADDC =>
when OP_ADDE =>
result_with_carry := ppc_adde(e_in.read_data1, e_in.read_data2, ctrl.carry and e_in.input_carry);
result := result_with_carry(63 downto 0);
ctrl_tmp.carry <= result_with_carry(64) and e_in.output_carry;
@ -309,7 +309,7 @@ begin
when OP_SUBF =>
result := ppc_subf(e_in.read_data1, e_in.read_data2);
result_en := 1;
when OP_SUBFC =>
when OP_SUBFE =>
result_with_carry := ppc_subfe(e_in.read_data1, e_in.read_data2, ctrl.carry or not(e_in.input_carry));
result := result_with_carry(63 downto 0);
ctrl_tmp.carry <= result_with_carry(64) and e_in.output_carry;

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