From 1ffe48a84b398e8cebbdc7a47bedb57e1e67e63f Mon Sep 17 00:00:00 2001 From: Richard Osborne Date: Mon, 17 Dec 2012 12:29:31 +0000 Subject: [PATCH] Add instruction encodings / disassembly support for 2r instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170323 91177308-0d34-0410-b5e6-96231b3b80d8 --- .../XCore/Disassembler/XCoreDisassembler.cpp | 67 ++++++++- lib/Target/XCore/XCoreInstrFormats.td | 17 ++- lib/Target/XCore/XCoreInstrInfo.td | 134 +++++++++--------- test/MC/Disassembler/XCore/xcore.txt | 74 ++++++++++ 4 files changed, 222 insertions(+), 70 deletions(-) diff --git a/lib/Target/XCore/Disassembler/XCoreDisassembler.cpp b/lib/Target/XCore/Disassembler/XCoreDisassembler.cpp index 16b91d996c1..42579442315 100644 --- a/lib/Target/XCore/Disassembler/XCoreDisassembler.cpp +++ b/lib/Target/XCore/Disassembler/XCoreDisassembler.cpp @@ -67,12 +67,26 @@ static unsigned getReg(const void *D, unsigned RC, unsigned RegNo) { return *(Dis->getRegInfo()->getRegClass(RC).begin() + RegNo); } - static DecodeStatus DecodeGRRegsRegisterClass(MCInst &Inst, unsigned RegNo, uint64_t Address, const void *Decoder); +static DecodeStatus Decode2RInstruction(MCInst &Inst, + unsigned RegNo, + uint64_t Address, + const void *Decoder); + +static DecodeStatus DecodeR2RInstruction(MCInst &Inst, + unsigned RegNo, + uint64_t Address, + const void *Decoder); + +static DecodeStatus Decode2RSrcDstInstruction(MCInst &Inst, + unsigned RegNo, + uint64_t Address, + const void *Decoder); + #include "XCoreGenDisassemblerTables.inc" static DecodeStatus DecodeGRRegsRegisterClass(MCInst &Inst, @@ -87,6 +101,57 @@ static DecodeStatus DecodeGRRegsRegisterClass(MCInst &Inst, return MCDisassembler::Success; } +static DecodeStatus +Decode2OpInstruction(unsigned Insn, unsigned &Op1, unsigned &Op2) { + unsigned Combined = fieldFromInstruction(Insn, 6, 5) + + fieldFromInstruction(Insn, 5, 1) * 5 - 27; + if (Combined >= 9) + return MCDisassembler::Fail; + + unsigned Op1High = Combined % 3; + unsigned Op2High = Combined / 3; + Op1 = (Op1High << 2) | fieldFromInstruction(Insn, 2, 2); + Op2 = (Op2High << 2) | fieldFromInstruction(Insn, 0, 2); + return MCDisassembler::Success; +} + +static DecodeStatus +Decode2RInstruction(MCInst &Inst, unsigned Insn, uint64_t Address, + const void *Decoder) { + unsigned Op1, Op2; + DecodeStatus S = Decode2OpInstruction(Insn, Op1, Op2); + if (S == MCDisassembler::Success) { + DecodeGRRegsRegisterClass(Inst, Op1, Address, Decoder); + DecodeGRRegsRegisterClass(Inst, Op2, Address, Decoder); + } + return S; +} + +static DecodeStatus +DecodeR2RInstruction(MCInst &Inst, unsigned Insn, uint64_t Address, + const void *Decoder) { + unsigned Op1, Op2; + DecodeStatus S = Decode2OpInstruction(Insn, Op2, Op1); + if (S == MCDisassembler::Success) { + DecodeGRRegsRegisterClass(Inst, Op1, Address, Decoder); + DecodeGRRegsRegisterClass(Inst, Op2, Address, Decoder); + } + return S; +} + +static DecodeStatus +Decode2RSrcDstInstruction(MCInst &Inst, unsigned Insn, uint64_t Address, + const void *Decoder) { + unsigned Op1, Op2; + DecodeStatus S = Decode2OpInstruction(Insn, Op1, Op2); + if (S == MCDisassembler::Success) { + DecodeGRRegsRegisterClass(Inst, Op1, Address, Decoder); + DecodeGRRegsRegisterClass(Inst, Op1, Address, Decoder); + DecodeGRRegsRegisterClass(Inst, Op2, Address, Decoder); + } + return S; +} + MCDisassembler::DecodeStatus XCoreDisassembler::getInstruction(MCInst &instr, uint64_t &Size, diff --git a/lib/Target/XCore/XCoreInstrFormats.td b/lib/Target/XCore/XCoreInstrFormats.td index c120240d6e2..f5724da27b7 100644 --- a/lib/Target/XCore/XCoreInstrFormats.td +++ b/lib/Target/XCore/XCoreInstrFormats.td @@ -73,8 +73,23 @@ class _FLU10 pattern> : InstXCore<4, outs, ins, asmstr, pattern> { } -class _F2R pattern> +class _F2R opc, dag outs, dag ins, string asmstr, list pattern> : InstXCore<2, outs, ins, asmstr, pattern> { + let Inst{15-11} = opc{5-1}; + let Inst{4} = opc{0}; + let DecoderMethod = "Decode2RInstruction"; +} + +// 2R with first operand as both a source and a destination. +class _F2RSrcDst opc, dag outs, dag ins, string asmstr, + list pattern> : _F2R { + let DecoderMethod = "Decode2RSrcDstInstruction"; +} + +// Same as 2R with last two operands swapped +class _FR2R opc, dag outs, dag ins, string asmstr, list pattern> + : _F2R { + let DecoderMethod = "DecodeR2RInstruction"; } class _FRUS pattern> diff --git a/lib/Target/XCore/XCoreInstrInfo.td b/lib/Target/XCore/XCoreInstrInfo.td index 8254efe5382..b69f7de70d0 100644 --- a/lib/Target/XCore/XCoreInstrInfo.td +++ b/lib/Target/XCore/XCoreInstrInfo.td @@ -344,10 +344,9 @@ multiclass FU10_LU10_np { // Two operand short -class F2R_np : _F2R< - (outs GRRegs:$dst), (ins GRRegs:$b), - !strconcat(OpcStr, " $dst, $b"), - []>; +class F2R_np opc, string OpcStr> : + _F2R; // Two operand long @@ -753,13 +752,11 @@ def BL_lu10 : _FLU10< // Two operand short // TODO eet, eef, tsetmr -def NOT : _F2R<(outs GRRegs:$dst), (ins GRRegs:$b), - "not $dst, $b", - [(set GRRegs:$dst, (not GRRegs:$b))]>; +def NOT : _F2R<0b100010, (outs GRRegs:$dst), (ins GRRegs:$b), + "not $dst, $b", [(set GRRegs:$dst, (not GRRegs:$b))]>; -def NEG : _F2R<(outs GRRegs:$dst), (ins GRRegs:$b), - "neg $dst, $b", - [(set GRRegs:$dst, (ineg GRRegs:$b))]>; +def NEG : _F2R<0b100100, (outs GRRegs:$dst), (ins GRRegs:$b), + "neg $dst, $b", [(set GRRegs:$dst, (ineg GRRegs:$b))]>; let Constraints = "$src1 = $dst" in { def SEXT_rus : _FRUS<(outs GRRegs:$dst), (ins GRRegs:$src1, i32imm:$src2), @@ -777,14 +774,15 @@ def ZEXT_rus : _FRUS<(outs GRRegs:$dst), (ins GRRegs:$src1, i32imm:$src2), [(set GRRegs:$dst, (int_xcore_zext GRRegs:$src1, immBitp:$src2))]>; -def ZEXT_2r : _FRUS<(outs GRRegs:$dst), (ins GRRegs:$src1, GRRegs:$src2), +def ZEXT_2r : _FRUS<(outs GRRegs:$dst), (ins GRRegs:$src2, GRRegs:$src1), "zext $dst, $src2", [(set GRRegs:$dst, (int_xcore_zext GRRegs:$src1, GRRegs:$src2))]>; -def ANDNOT_2r : _F2R<(outs GRRegs:$dst), (ins GRRegs:$src1, GRRegs:$src2), - "andnot $dst, $src2", - [(set GRRegs:$dst, (and GRRegs:$src1, (not GRRegs:$src2)))]>; +def ANDNOT_2r : + _F2RSrcDst<0b001010, (outs GRRegs:$dst), (ins GRRegs:$src1, GRRegs:$src2), + "andnot $dst, $src2", + [(set GRRegs:$dst, (and GRRegs:$src1, (not GRRegs:$src2)))]>; } let isReMaterializable = 1, neverHasSideEffects = 1 in @@ -792,99 +790,103 @@ def MKMSK_rus : _FRUS<(outs GRRegs:$dst), (ins i32imm:$size), "mkmsk $dst, $size", []>; -def MKMSK_2r : _FRUS<(outs GRRegs:$dst), (ins GRRegs:$size), - "mkmsk $dst, $size", - [(set GRRegs:$dst, (add (shl 1, GRRegs:$size), -1))]>; +def MKMSK_2r : _F2R<0b101000, (outs GRRegs:$dst), (ins GRRegs:$size), + "mkmsk $dst, $size", + [(set GRRegs:$dst, (add (shl 1, GRRegs:$size), -1))]>; def GETR_rus : _FRUS<(outs GRRegs:$dst), (ins i32imm:$type), "getr $dst, $type", [(set GRRegs:$dst, (int_xcore_getr immUs:$type))]>; -def GETTS_2r : _F2R<(outs GRRegs:$dst), (ins GRRegs:$r), - "getts $dst, res[$r]", - [(set GRRegs:$dst, (int_xcore_getts GRRegs:$r))]>; +def GETTS_2r : _F2R<0b001110, (outs GRRegs:$dst), (ins GRRegs:$r), + "getts $dst, res[$r]", + [(set GRRegs:$dst, (int_xcore_getts GRRegs:$r))]>; -def SETPT_2r : _F2R<(outs), (ins GRRegs:$r, GRRegs:$val), - "setpt res[$r], $val", - [(int_xcore_setpt GRRegs:$r, GRRegs:$val)]>; +def SETPT_2r : _FR2R<0b001111, (outs), (ins GRRegs:$r, GRRegs:$val), + "setpt res[$r], $val", + [(int_xcore_setpt GRRegs:$r, GRRegs:$val)]>; -def OUTCT_2r : _F2R<(outs), (ins GRRegs:$r, GRRegs:$val), - "outct res[$r], $val", - [(int_xcore_outct GRRegs:$r, GRRegs:$val)]>; +def OUTCT_2r : _F2R<0b010010, (outs), (ins GRRegs:$r, GRRegs:$val), + "outct res[$r], $val", + [(int_xcore_outct GRRegs:$r, GRRegs:$val)]>; -def OUTCT_rus : _F2R<(outs), (ins GRRegs:$r, i32imm:$val), - "outct res[$r], $val", - [(int_xcore_outct GRRegs:$r, immUs:$val)]>; +def OUTCT_rus : _F2RUS<(outs), (ins GRRegs:$r, i32imm:$val), + "outct res[$r], $val", + [(int_xcore_outct GRRegs:$r, immUs:$val)]>; -def OUTT_2r : _F2R<(outs), (ins GRRegs:$r, GRRegs:$val), - "outt res[$r], $val", - [(int_xcore_outt GRRegs:$r, GRRegs:$val)]>; +def OUTT_2r : _FR2R<0b000011, (outs), (ins GRRegs:$r, GRRegs:$val), + "outt res[$r], $val", + [(int_xcore_outt GRRegs:$r, GRRegs:$val)]>; -def OUT_2r : _F2R<(outs), (ins GRRegs:$r, GRRegs:$val), - "out res[$r], $val", - [(int_xcore_out GRRegs:$r, GRRegs:$val)]>; +def OUT_2r : _FR2R<0b101010, (outs), (ins GRRegs:$r, GRRegs:$val), + "out res[$r], $val", + [(int_xcore_out GRRegs:$r, GRRegs:$val)]>; let Constraints = "$src = $dst" in -def OUTSHR_2r : _F2R<(outs GRRegs:$dst), (ins GRRegs:$r, GRRegs:$src), - "outshr res[$r], $src", - [(set GRRegs:$dst, (int_xcore_outshr GRRegs:$r, - GRRegs:$src))]>; +def OUTSHR_2r : + _F2RSrcDst<0b101011, (outs GRRegs:$dst), (ins GRRegs:$src, GRRegs:$r), + "outshr res[$r], $src", + [(set GRRegs:$dst, (int_xcore_outshr GRRegs:$r, GRRegs:$src))]>; -def INCT_2r : _F2R<(outs GRRegs:$dst), (ins GRRegs:$r), - "inct $dst, res[$r]", - [(set GRRegs:$dst, (int_xcore_inct GRRegs:$r))]>; +def INCT_2r : _F2R<0b100001, (outs GRRegs:$dst), (ins GRRegs:$r), + "inct $dst, res[$r]", + [(set GRRegs:$dst, (int_xcore_inct GRRegs:$r))]>; -def INT_2r : _F2R<(outs GRRegs:$dst), (ins GRRegs:$r), - "int $dst, res[$r]", - [(set GRRegs:$dst, (int_xcore_int GRRegs:$r))]>; +def INT_2r : _F2R<0b100011, (outs GRRegs:$dst), (ins GRRegs:$r), + "int $dst, res[$r]", + [(set GRRegs:$dst, (int_xcore_int GRRegs:$r))]>; -def IN_2r : _F2R<(outs GRRegs:$dst), (ins GRRegs:$r), +def IN_2r : _F2R<0b101100, (outs GRRegs:$dst), (ins GRRegs:$r), "in $dst, res[$r]", [(set GRRegs:$dst, (int_xcore_in GRRegs:$r))]>; let Constraints = "$src = $dst" in -def INSHR_2r : _F2R<(outs GRRegs:$dst), (ins GRRegs:$r, GRRegs:$src), - "inshr $dst, res[$r]", - [(set GRRegs:$dst, (int_xcore_inshr GRRegs:$r, - GRRegs:$src))]>; +def INSHR_2r : + _F2RSrcDst<0b101101, (outs GRRegs:$dst), (ins GRRegs:$src, GRRegs:$r), + "inshr $dst, res[$r]", + [(set GRRegs:$dst, (int_xcore_inshr GRRegs:$r, GRRegs:$src))]>; -def CHKCT_2r : _F2R<(outs), (ins GRRegs:$r, GRRegs:$val), - "chkct res[$r], $val", - [(int_xcore_chkct GRRegs:$r, GRRegs:$val)]>; +def CHKCT_2r : _F2R<0b110010, (outs), (ins GRRegs:$r, GRRegs:$val), + "chkct res[$r], $val", + [(int_xcore_chkct GRRegs:$r, GRRegs:$val)]>; -def CHKCT_rus : _F2R<(outs), (ins GRRegs:$r, i32imm:$val), +def CHKCT_rus : _F2RUS<(outs), (ins GRRegs:$r, i32imm:$val), "chkct res[$r], $val", [(int_xcore_chkct GRRegs:$r, immUs:$val)]>; -def TESTCT_2r : _F2R<(outs GRRegs:$dst), (ins GRRegs:$src), +def TESTCT_2r : _F2R<0b101111, (outs GRRegs:$dst), (ins GRRegs:$src), "testct $dst, res[$src]", [(set GRRegs:$dst, (int_xcore_testct GRRegs:$src))]>; -def TESTWCT_2r : _F2R<(outs GRRegs:$dst), (ins GRRegs:$src), +def TESTWCT_2r : _F2R<0b110001, (outs GRRegs:$dst), (ins GRRegs:$src), "testwct $dst, res[$src]", [(set GRRegs:$dst, (int_xcore_testwct GRRegs:$src))]>; -def SETD_2r : _F2R<(outs), (ins GRRegs:$r, GRRegs:$val), - "setd res[$r], $val", - [(int_xcore_setd GRRegs:$r, GRRegs:$val)]>; +def SETD_2r : _FR2R<0b000101, (outs), (ins GRRegs:$r, GRRegs:$val), + "setd res[$r], $val", + [(int_xcore_setd GRRegs:$r, GRRegs:$val)]>; -def GETST_2r : _F2R<(outs GRRegs:$dst), (ins GRRegs:$r), +def SETPSC_l2r : _FR2R<0b110000, (outs), (ins GRRegs:$src1, GRRegs:$src2), + "setpsc res[$src1], $src2", + [(int_xcore_setpsc GRRegs:$src1, GRRegs:$src2)]>; + +def GETST_2r : _F2R<0b000001, (outs GRRegs:$dst), (ins GRRegs:$r), "getst $dst, res[$r]", [(set GRRegs:$dst, (int_xcore_getst GRRegs:$r))]>; -def INITSP_2r : _F2R<(outs), (ins GRRegs:$t, GRRegs:$src), +def INITSP_2r : _F2R<0b000100, (outs), (ins GRRegs:$src, GRRegs:$t), "init t[$t]:sp, $src", [(int_xcore_initsp GRRegs:$t, GRRegs:$src)]>; -def INITPC_2r : _F2R<(outs), (ins GRRegs:$t, GRRegs:$src), +def INITPC_2r : _F2R<0b000000, (outs), (ins GRRegs:$src, GRRegs:$t), "init t[$t]:pc, $src", [(int_xcore_initpc GRRegs:$t, GRRegs:$src)]>; -def INITCP_2r : _F2R<(outs), (ins GRRegs:$t, GRRegs:$src), +def INITCP_2r : _F2R<0b000110, (outs), (ins GRRegs:$src, GRRegs:$t), "init t[$t]:cp, $src", [(int_xcore_initcp GRRegs:$t, GRRegs:$src)]>; -def INITDP_2r : _F2R<(outs), (ins GRRegs:$t, GRRegs:$src), +def INITDP_2r : _F2R<0b000010, (outs), (ins GRRegs:$src, GRRegs:$t), "init t[$t]:dp, $src", [(int_xcore_initdp GRRegs:$t, GRRegs:$src)]>; @@ -930,10 +932,6 @@ def SETRDY_l2r : _FL2R<(outs), (ins GRRegs:$src1, GRRegs:$src2), "setrdy res[$src1], $src2", [(int_xcore_setrdy GRRegs:$src1, GRRegs:$src2)]>; -def SETPSC_l2r : _FL2R<(outs), (ins GRRegs:$src1, GRRegs:$src2), - "setpsc res[$src1], $src2", - [(int_xcore_setpsc GRRegs:$src1, GRRegs:$src2)]>; - def PEEK_l2r : _FL2R<(outs GRRegs:$dst), (ins GRRegs:$src), "peek $dst, res[$src]", [(set GRRegs:$dst, (int_xcore_peek GRRegs:$src))]>; diff --git a/test/MC/Disassembler/XCore/xcore.txt b/test/MC/Disassembler/XCore/xcore.txt index 45060c678ec..aa1e0bbbc9e 100644 --- a/test/MC/Disassembler/XCore/xcore.txt +++ b/test/MC/Disassembler/XCore/xcore.txt @@ -58,3 +58,77 @@ # CHECK: eeu res[r11] 0xfb 0x07 + +# 2r instructions + +# CHECK: not r1, r8 +0x24 0x8f + +# CHECK: neg r7, r6 +0xce 0x97 + +# CHECK: andnot r10, r11 +0xab 0x2f + +# CHECK: mkmsk r11, r0 +0x4c 0xa7 + +# CHECK: getts r8, res[r1] +0x41 0x3f + +# CHECK: setpt res[r2], r3 +0xde 0x3e + +# CHECK: outct res[r1], r2 +0xc6 0x4e + +# CHECK: outt res[r5], r4 +0xd1 0x0f + +# CHECK: out res[r9], r10 +0xa9 0xaf + +# CHECK: outshr res[r0], r2 +0xd8 0xae + +# CHECK: inct r7, res[r4] +0xdc 0x87 + +# CHECK: int r8, res[r3] +0x53 0x8f + +# CHECK: in r10, res[r0] +0x48 0xb7 + +# CHECK: inshr r4, res[r2] +0x12 0xb7 + +# CHECK: chkct res[r6], r0 +0x08 0xcf + +# CHECK: testct r8, res[r3] +0x53 0xbf + +# CHECK: testwct r2, res[r9] +0x39 0xc7 + +# CHECK: setd res[r3], r4 +0x13 0x17 + +# CHECK: getst r7, res[r1] +0x1d 0x07 + +# CHECK: init t[r1]:sp, r2 +0xc9 0x16 + +# CHECK: init t[r10]:pc, r1 +0x26 0x07 + +# CHECK: init t[r2]:cp, r10 +0x4a 0x1f + +# CHECK: init t[r2]:dp, r3 +0xce 0x0e + +# CHECK: setpsc res[r8], r2 +0x28 0xc7 -- 2.34.1