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Added RFE for disassembly only. 

B6.1.8 RFE Return From Exception loads the PC and the CPSR from the word at the
specified address and the following word respectively.

llvm-svn: 96519
This commit is contained in:
Johnny Chen 2010-02-17 21:39:10 +00:00
parent d63f5246dc
commit 5454e0633e
1 changed files with 16 additions and 1 deletions
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17
llvm/lib/Target/ARM/ARMInstrInfo.td
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@ -957,7 +957,7 @@ def SVC : ABI<0b1111, (outs), (ins i32imm:$svc), IIC_Br, "svc", "\t$svc",
[/* For disassembly only; pattern left blank */]>;
}
// Store Return State -- for disassembly only
// Store Return State is a system instruction -- for disassembly only
def SRSW : ABXI<{1,0,0,?}, (outs), (ins addrmode4:$addr, i32imm:$mode),
NoItinerary, "srs${addr:submode}\tsp!, $mode",
[/* For disassembly only; pattern left blank */]> {
@ -972,6 +972,21 @@ def SRS : ABXI<{1,0,0,?}, (outs), (ins addrmode4:$addr, i32imm:$mode),
let Inst{22-20} = 0b100; // W = 0
}
// Return From Exception is a system instruction -- for disassembly only
def RFEW : ABXI<{1,0,0,?}, (outs), (ins addrmode4:$addr, GPR:$base),
NoItinerary, "rfe${addr:submode}\t$base!",
[/* For disassembly only; pattern left blank */]> {
let Inst{31-28} = 0b1111;
let Inst{22-20} = 0b011; // W = 1
}
def RFE : ABXI<{1,0,0,?}, (outs), (ins addrmode4:$addr, GPR:$base),
NoItinerary, "rfe${addr:submode}\t$base",
[/* For disassembly only; pattern left blank */]> {
let Inst{31-28} = 0b1111;
let Inst{22-20} = 0b001; // W = 0
}
//===----------------------------------------------------------------------===//
// Load / store Instructions.
//