diff options
| author | Jim Grosbach <grosbach@apple.com> | 2011-12-07 18:04:19 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2011-12-07 18:04:19 +0000 |
| commit | 9a70df99ca674b288d50dbf454779ed75d6e48dd (patch) | |
| tree | 6fb406eff46ccb2ef2579959ca40d70651758df0 | |
| parent | 465becf481092f18c75459f1975f8faaf58aa0c0 (diff) | |
ARM support the .arm and .thumb directives for assembly mode switching.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146042 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/ARM/AsmParser/ARMAsmParser.cpp | 22 | ||||
| -rw-r--r-- | test/MC/ARM/mode-switch.s | 11 |
2 files changed, 30 insertions, 3 deletions
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp index ded7d50c1e..07f8f42329 100644 --- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp +++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp @@ -92,6 +92,7 @@ class ARMAsmParser : public MCTargetAsmParser { unsigned &ShiftAmount); bool parseDirectiveWord(unsigned Size, SMLoc L); bool parseDirectiveThumb(SMLoc L); + bool parseDirectiveARM(SMLoc L); bool parseDirectiveThumbFunc(SMLoc L); bool parseDirectiveCode(SMLoc L); bool parseDirectiveSyntax(SMLoc L); @@ -5622,6 +5623,8 @@ bool ARMAsmParser::ParseDirective(AsmToken DirectiveID) { return parseDirectiveWord(4, DirectiveID.getLoc()); else if (IDVal == ".thumb") return parseDirectiveThumb(DirectiveID.getLoc()); + else if (IDVal == ".arm") + return parseDirectiveARM(DirectiveID.getLoc()); else if (IDVal == ".thumb_func") return parseDirectiveThumbFunc(DirectiveID.getLoc()); else if (IDVal == ".code") @@ -5663,9 +5666,22 @@ bool ARMAsmParser::parseDirectiveThumb(SMLoc L) { return Error(L, "unexpected token in directive"); Parser.Lex(); - // TODO: set thumb mode - // TODO: tell the MC streamer the mode - // getParser().getStreamer().Emit???(); + if (!isThumb()) + SwitchMode(); + getParser().getStreamer().EmitAssemblerFlag(MCAF_Code16); + return false; +} + +/// parseDirectiveARM +/// ::= .arm +bool ARMAsmParser::parseDirectiveARM(SMLoc L) { + if (getLexer().isNot(AsmToken::EndOfStatement)) + return Error(L, "unexpected token in directive"); + Parser.Lex(); + + if (isThumb()) + SwitchMode(); + getParser().getStreamer().EmitAssemblerFlag(MCAF_Code32); return false; } diff --git a/test/MC/ARM/mode-switch.s b/test/MC/ARM/mode-switch.s index 9d4995439e..afcc082ba6 100644 --- a/test/MC/ARM/mode-switch.s +++ b/test/MC/ARM/mode-switch.s @@ -13,3 +13,14 @@ .code 16 adds r0, r0, r1 @ CHECK: adds r0, r0, r1 @ encoding: [0x40,0x18] + +.arm + add r0, r0, r1 +@ CHECK: add r0, r0, r1 @ encoding: [0x01,0x00,0x80,0xe0] + +.thumb + add.w r0, r0, r1 + adds r0, r0, r1 + +@ CHECK: add.w r0, r0, r1 @ encoding: [0x00,0xeb,0x01,0x00] +@ CHECK: adds r0, r0, r1 @ encoding: [0x40,0x18] |