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30be10a06e
llvm-6502/test/MC
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Craig Topper 30be10a06e Add OpSize16 bit, for instructions which need 0x66 prefix in 16-bit mode 
The 0x66 prefix toggles between 16-bit and 32-bit addressing mode.
So in 32-bit mode it is used to switch to 16-bit addressing mode for the
following instruction, while in 16-bit mode it's the other way round — it's
used to switch to 32-bit mode instead.

Thus, emit the 0x66 prefix byte for OpSize only in 32-bit (and 64-bit) mode,
and introduce a new OpSize16 bit which is used in 16-bit mode instead.

This is just the basic infrastructure for that change; a subsequent patch
will add the new OpSize16 bit to the 32-bit instructions that need it.

Patch from David Woodhouse.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198586 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-06 06:02:58 +00:00
..
AArch64 [AArch64][NEON] Added SXTL and SXTL2 instruction aliases 2014-01-03 19:20:31 +00:00
ARM [arm] Add softvfp to supported FPU names. 2014-01-02 15:50:02 +00:00
AsmParser Mark the 64-bit x86 push/pop instructions as In64BitMode. Mark the corresponding 32-bit versions with the same encodings Not64BitMode. Remove hack from tablegen disassembler table emitter. Fix bad test. 2014-01-05 01:35:51 +00:00
COFF Add the .secidx test I've forgotten to svn add in 197826 2013-12-20 19:06:50 +00:00
Disassembler Remove need for MODIFIER_OPCODE in the disassembler tables. AddRegFrms are really more like OrRegFrm so we don't need a difference since we can just mask bits. 2014-01-01 15:29:32 +00:00
ELF Correct word hyphenations 2013-12-05 05:44:44 +00:00
MachO Fixed a bug in getARMFixupKindMachOInfo() where three ARM fixup kinds 2013-12-13 22:46:54 +00:00
Markup
Mips Support for microMIPS load effective address. 2013-12-25 10:14:07 +00:00
PowerPC Convert another llc -filetype=obj test. 2013-10-28 22:17:19 +00:00
Sparc Add lit.local.cfg for MC/Sparc 2014-01-05 03:07:04 +00:00
SystemZ [SystemZ] Add MC support for interlocked-access 1 instructions 2013-12-24 15:14:05 +00:00
X86 Add OpSize16 bit, for instructions which need 0x66 prefix in 16-bit mode 2014-01-06 06:02:58 +00:00