mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 16:33:37 +01:00
7b52d90c9e
Eliminate the PersonalityPrefix/Suffix & NeedsIndirectEncoding fields from MAI: they aren't part of the asm syntax, they are related to the structure of the object file. To replace their functionality, add a new TLOF::getSymbolForDwarfGlobalReference method which asks targets to decide how to reference a global from EH in a pc-relative way. The default implementation just returns the symbol. The default darwin implementation references the symbol through an indirect $non_lazy_ptr stub. The bizarro x86-64 darwin specialization handles the weird "foo@GOTPCREL+4" hack. DwarfException.cpp now uses this to emit the reference to the symbol in the right way, and this also eliminates another horrible hack from DwarfException.cpp: - if (strcmp(MAI->getPersonalitySuffix(), "+4@GOTPCREL")) - O << "-" << MAI->getPCSymbol(); llvm-svn: 81991
124 lines
3.4 KiB
C++
124 lines
3.4 KiB
C++
//===-- X86MCAsmInfo.cpp - X86 asm properties -----------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains the declarations of the X86MCAsmInfo properties.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "X86MCAsmInfo.h"
|
|
#include "X86TargetMachine.h"
|
|
#include "llvm/ADT/Triple.h"
|
|
#include "llvm/Support/CommandLine.h"
|
|
using namespace llvm;
|
|
|
|
enum AsmWriterFlavorTy {
|
|
// Note: This numbering has to match the GCC assembler dialects for inline
|
|
// asm alternatives to work right.
|
|
ATT = 0, Intel = 1
|
|
};
|
|
|
|
static cl::opt<AsmWriterFlavorTy>
|
|
AsmWriterFlavor("x86-asm-syntax", cl::init(ATT),
|
|
cl::desc("Choose style of code to emit from X86 backend:"),
|
|
cl::values(clEnumValN(ATT, "att", "Emit AT&T-style assembly"),
|
|
clEnumValN(Intel, "intel", "Emit Intel-style assembly"),
|
|
clEnumValEnd));
|
|
|
|
|
|
static const char *const x86_asm_table[] = {
|
|
"{si}", "S",
|
|
"{di}", "D",
|
|
"{ax}", "a",
|
|
"{cx}", "c",
|
|
"{memory}", "memory",
|
|
"{flags}", "",
|
|
"{dirflag}", "",
|
|
"{fpsr}", "",
|
|
"{cc}", "cc",
|
|
0,0};
|
|
|
|
X86MCAsmInfoDarwin::X86MCAsmInfoDarwin(const Triple &Triple) {
|
|
AsmTransCBE = x86_asm_table;
|
|
AssemblerDialect = AsmWriterFlavor;
|
|
|
|
bool is64Bit = Triple.getArch() == Triple::x86_64;
|
|
|
|
TextAlignFillValue = 0x90;
|
|
|
|
if (!is64Bit)
|
|
Data64bitsDirective = 0; // we can't emit a 64-bit unit
|
|
|
|
// Leopard and above support aligned common symbols.
|
|
COMMDirectiveTakesAlignment = Triple.getDarwinMajorNumber() >= 9;
|
|
|
|
CommentString = "##";
|
|
PCSymbol = ".";
|
|
|
|
SupportsDebugInformation = true;
|
|
DwarfUsesInlineInfoSection = true;
|
|
|
|
// Exceptions handling
|
|
ExceptionsType = ExceptionHandling::Dwarf;
|
|
AbsoluteEHSectionOffsets = false;
|
|
}
|
|
|
|
X86ELFMCAsmInfo::X86ELFMCAsmInfo(const Triple &Triple) {
|
|
AsmTransCBE = x86_asm_table;
|
|
AssemblerDialect = AsmWriterFlavor;
|
|
|
|
PrivateGlobalPrefix = ".L";
|
|
WeakRefDirective = "\t.weak\t";
|
|
SetDirective = "\t.set\t";
|
|
PCSymbol = ".";
|
|
|
|
// Set up DWARF directives
|
|
HasLEB128 = true; // Target asm supports leb128 directives (little-endian)
|
|
|
|
// Debug Information
|
|
AbsoluteDebugSectionOffsets = true;
|
|
SupportsDebugInformation = true;
|
|
|
|
// Exceptions handling
|
|
ExceptionsType = ExceptionHandling::Dwarf;
|
|
AbsoluteEHSectionOffsets = false;
|
|
|
|
// On Linux we must declare when we can use a non-executable stack.
|
|
if (Triple.getOS() == Triple::Linux)
|
|
NonexecutableStackDirective = "\t.section\t.note.GNU-stack,\"\",@progbits";
|
|
}
|
|
|
|
X86MCAsmInfoCOFF::X86MCAsmInfoCOFF(const Triple &Triple) {
|
|
AsmTransCBE = x86_asm_table;
|
|
AssemblerDialect = AsmWriterFlavor;
|
|
}
|
|
|
|
|
|
X86WinMCAsmInfo::X86WinMCAsmInfo(const Triple &Triple) {
|
|
AsmTransCBE = x86_asm_table;
|
|
AssemblerDialect = AsmWriterFlavor;
|
|
|
|
GlobalPrefix = "_";
|
|
CommentString = ";";
|
|
|
|
PrivateGlobalPrefix = "$";
|
|
AlignDirective = "\tALIGN\t";
|
|
ZeroDirective = "\tdb\t";
|
|
ZeroDirectiveSuffix = " dup(0)";
|
|
AsciiDirective = "\tdb\t";
|
|
AscizDirective = 0;
|
|
Data8bitsDirective = "\tdb\t";
|
|
Data16bitsDirective = "\tdw\t";
|
|
Data32bitsDirective = "\tdd\t";
|
|
Data64bitsDirective = "\tdq\t";
|
|
HasDotTypeDotSizeDirective = false;
|
|
HasSingleParameterDotFile = false;
|
|
|
|
AlignmentIsInBytes = true;
|
|
}
|