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author | Richard Sandiford <rsandifo@linux.vnet.ibm.com> | 2013-07-02 14:56:45 +0000 |
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committer | Richard Sandiford <rsandifo@linux.vnet.ibm.com> | 2013-07-02 14:56:45 +0000 |
commit | 9188443a2d35352c4e8a2cffd1b4d31d47843b26 (patch) | |
tree | 980fdaf6bdacd1e193a723d27be6d21a03eddc4e /lib/Target/SystemZ/Disassembler | |
parent | 850ba41ed4252aae61e62140cdf0c61dbb444563 (diff) | |
download | llvm-9188443a2d35352c4e8a2cffd1b4d31d47843b26.tar.gz llvm-9188443a2d35352c4e8a2cffd1b4d31d47843b26.tar.bz2 llvm-9188443a2d35352c4e8a2cffd1b4d31d47843b26.tar.xz |
[SystemZ] Add the MVC instruction
This is the first use of D(L,B) addressing, which required a fair bit
of surgery. For that reason, the patch just adds the instruction
definition and the associated assembler and disassembler support.
A later patch will actually make use of it for codegen.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185433 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/SystemZ/Disassembler')
-rw-r--r-- | lib/Target/SystemZ/Disassembler/SystemZDisassembler.cpp | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/lib/Target/SystemZ/Disassembler/SystemZDisassembler.cpp b/lib/Target/SystemZ/Disassembler/SystemZDisassembler.cpp index 4e4816bada..79469b6afe 100644 --- a/lib/Target/SystemZ/Disassembler/SystemZDisassembler.cpp +++ b/lib/Target/SystemZ/Disassembler/SystemZDisassembler.cpp @@ -226,6 +226,18 @@ static DecodeStatus decodeBDXAddr20Operand(MCInst &Inst, uint64_t Field, return MCDisassembler::Success; } +static DecodeStatus decodeBDLAddr12Len8Operand(MCInst &Inst, uint64_t Field, + const unsigned *Regs) { + uint64_t Length = Field >> 16; + uint64_t Base = (Field >> 12) & 0xf; + uint64_t Disp = Field & 0xfff; + assert(Length < 256 && "Invalid BDLAddr12Len8"); + Inst.addOperand(MCOperand::CreateReg(Base == 0 ? 0 : Regs[Base])); + Inst.addOperand(MCOperand::CreateImm(Disp)); + Inst.addOperand(MCOperand::CreateImm(Length + 1)); + return MCDisassembler::Success; +} + static DecodeStatus decodeBDAddr32Disp12Operand(MCInst &Inst, uint64_t Field, uint64_t Address, const void *Decoder) { @@ -262,6 +274,13 @@ static DecodeStatus decodeBDXAddr64Disp20Operand(MCInst &Inst, uint64_t Field, return decodeBDXAddr20Operand(Inst, Field, SystemZMC::GR64Regs); } +static DecodeStatus decodeBDLAddr64Disp12Len8Operand(MCInst &Inst, + uint64_t Field, + uint64_t Address, + const void *Decoder) { + return decodeBDLAddr12Len8Operand(Inst, Field, SystemZMC::GR64Regs); +} + #include "SystemZGenDisassemblerTables.inc" DecodeStatus SystemZDisassembler::getInstruction(MCInst &MI, uint64_t &Size, |