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Thumb2 encodings for system instructions.

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llvm-svn: 120307
This commit is contained in:
Owen Anderson 2010-11-29 19:22:08 +00:00
parent b29182b60f
commit 78d84a1921
1 changed files with 50 additions and 8 deletions
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58
lib/Target/ARM/ARMInstrThumb2.td
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@ -3045,6 +3045,26 @@ def t2CPS : T2XI<(outs),(ins cps_opt:$opt), NoItinerary, "cps$opt",
let Inst{25-20} = 0b111010;
let Inst{15-14} = 0b10;
let Inst{12} = 0;
bits<11> opt;
// mode number
let Inst{4-0} = opt{4-0};
// M flag
let Inst{8} = opt{5};
// F flag
let Inst{5} = opt{6};
// I flag
let Inst{6} = opt{7};
// A flag
let Inst{7} = opt{8};
// imod flag
let Inst{10-9} = opt{10-9};
}
// A6.3.4 Branches and miscellaneous control
@ -3082,53 +3102,75 @@ def t2SMC : T2I<(outs), (ins i32imm:$opt), NoItinerary, "smc", "\t$opt",
let Inst{31-27} = 0b11110;
let Inst{26-20} = 0b1111111;
let Inst{15-12} = 0b1000;
bits<4> opt;
let Inst{19-16} = opt{3-0};
}
class T2SRS<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2I<oops, iops, itin, opc, asm, pattern> {
bits<5> mode;
let Inst{4-0} = mode{4-0};
}
// Store Return State is a system instruction -- for disassembly only
def t2SRSDBW : T2I<(outs),(ins i32imm:$mode),NoItinerary,"srsdb","\tsp!, $mode",
def t2SRSDBW : T2SRS<
(outs),(ins i32imm:$mode),NoItinerary,"srsdb","\tsp!, $mode",
[/* For disassembly only; pattern left blank */]> {
let Inst{31-27} = 0b11101;
let Inst{26-20} = 0b0000010; // W = 1
}
def t2SRSDB : T2I<(outs),(ins i32imm:$mode),NoItinerary,"srsdb","\tsp, $mode",
def t2SRSDB : T2SRS<
(outs),(ins i32imm:$mode),NoItinerary,"srsdb","\tsp, $mode",
[/* For disassembly only; pattern left blank */]> {
let Inst{31-27} = 0b11101;
let Inst{26-20} = 0b0000000; // W = 0
}
def t2SRSIAW : T2I<(outs),(ins i32imm:$mode),NoItinerary,"srsia","\tsp!, $mode",
def t2SRSIAW : T2SRS<
(outs),(ins i32imm:$mode),NoItinerary,"srsia","\tsp!, $mode",
[/* For disassembly only; pattern left blank */]> {
let Inst{31-27} = 0b11101;
let Inst{26-20} = 0b0011010; // W = 1
}
def t2SRSIA : T2I<(outs), (ins i32imm:$mode),NoItinerary,"srsia","\tsp, $mode",
def t2SRSIA : T2SRS<
(outs), (ins i32imm:$mode),NoItinerary,"srsia","\tsp, $mode",
[/* For disassembly only; pattern left blank */]> {
let Inst{31-27} = 0b11101;
let Inst{26-20} = 0b0011000; // W = 0
}
// Return From Exception is a system instruction -- for disassembly only
def t2RFEDBW : T2I<(outs), (ins rGPR:$base), NoItinerary, "rfedb", "\t$base!",
class T2RFE<dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: T2I<oops, iops, itin, opc, asm, pattern> {
bits<4> Rn;
let Inst{19-16} = Rn{3-0};
}
def t2RFEDBW : T2RFE<(outs), (ins rGPR:$Rn), NoItinerary, "rfedb", "\t$Rn!",
[/* For disassembly only; pattern left blank */]> {
let Inst{31-27} = 0b11101;
let Inst{26-20} = 0b0000011; // W = 1
}
def t2RFEDB : T2I<(outs), (ins rGPR:$base), NoItinerary, "rfeab", "\t$base",
def t2RFEDB : T2RFE<(outs), (ins rGPR:$Rn), NoItinerary, "rfeab", "\t$Rn",
[/* For disassembly only; pattern left blank */]> {
let Inst{31-27} = 0b11101;
let Inst{26-20} = 0b0000001; // W = 0
}
def t2RFEIAW : T2I<(outs), (ins rGPR:$base), NoItinerary, "rfeia", "\t$base!",
def t2RFEIAW : T2RFE<(outs), (ins rGPR:$Rn), NoItinerary, "rfeia", "\t$Rn!",
[/* For disassembly only; pattern left blank */]> {
let Inst{31-27} = 0b11101;
let Inst{26-20} = 0b0011011; // W = 1
}
def t2RFEIA : T2I<(outs), (ins rGPR:$base), NoItinerary, "rfeia", "\t$base",
def t2RFEIA : T2RFE<(outs), (ins rGPR:$Rn), NoItinerary, "rfeia", "\t$Rn",
[/* For disassembly only; pattern left blank */]> {
let Inst{31-27} = 0b11101;
let Inst{26-20} = 0b0011001; // W = 0