//
// The LLVM Compiler Infrastructure
//
-// This file was developed by James M. Laskey and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//===----------------------------------------------------------------------===//
#include "llvm/Target/TargetAsmInfo.h"
+#include "llvm/Support/Dwarf.h"
+#include <cctype>
+#include <cstring>
using namespace llvm;
TargetAsmInfo::TargetAsmInfo() :
- TextSection(".text"),
- DataSection(".data"),
- AddressSize(4),
+ TextSection("\t.text"),
+ DataSection("\t.data"),
+ BSSSection("\t.bss"),
+ TLSDataSection("\t.section .tdata,\"awT\",@progbits"),
+ TLSBSSSection("\t.section .tbss,\"awT\",@nobits"),
+ ZeroFillDirective(0),
NeedsSet(false),
MaxInstLength(4),
+ PCSymbol("$"),
SeparatorChar(';'),
CommentString("#"),
GlobalPrefix(""),
PrivateGlobalPrefix("."),
+ JumpTableSpecialLabelPrefix(0),
GlobalVarAddrPrefix(""),
GlobalVarAddrSuffix(""),
FunctionAddrPrefix(""),
FunctionAddrSuffix(""),
+ PersonalityPrefix(""),
+ PersonalitySuffix(""),
+ NeedsIndirectEncoding(false),
InlineAsmStart("#APP"),
InlineAsmEnd("#NO_APP"),
+ AssemblerDialect(0),
ZeroDirective("\t.zero\t"),
ZeroDirectiveSuffix(0),
AsciiDirective("\t.ascii\t"),
Data64bitsDirective("\t.quad\t"),
AlignDirective("\t.align\t"),
AlignmentIsInBytes(true),
+ TextAlignFillValue(0),
SwitchToSectionDirective("\t.section\t"),
TextSectionStartSuffix(""),
DataSectionStartSuffix(""),
SectionEndDirectiveSuffix(0),
- ConstantPoolSection("\t.section .rodata\n"),
- JumpTableDataSection("\t.section .rodata\n"),
+ ConstantPoolSection("\t.section .rodata"),
+ JumpTableDataSection("\t.section .rodata"),
JumpTableDirective(0),
CStringSection(0),
StaticCtorsSection("\t.section .ctors,\"aw\",@progbits"),
FourByteConstantSection(0),
EightByteConstantSection(0),
SixteenByteConstantSection(0),
+ ReadOnlySection(0),
+ GlobalDirective("\t.globl\t"),
SetDirective(0),
LCOMMDirective(0),
COMMDirective("\t.comm\t"),
COMMDirectiveTakesAlignment(true),
HasDotTypeDotSizeDirective(true),
UsedDirective(0),
+ WeakRefDirective(0),
+ WeakDefDirective(0),
+ HiddenDirective("\t.hidden\t"),
+ ProtectedDirective("\t.protected\t"),
+ AbsoluteDebugSectionOffsets(false),
+ AbsoluteEHSectionOffsets(false),
HasLEB128(false),
- HasDotLoc(false),
- HasDotFile(false),
+ HasDotLocAndDotFile(false),
+ SupportsDebugInformation(false),
+ SupportsExceptionHandling(false),
DwarfRequiresFrameSection(true),
+ GlobalEHDirective(0),
+ SupportsWeakOmittedEHFrame(true),
+ ShortenEHDataOn64Bit(false),
+ DwarfSectionOffsetDirective(0),
DwarfAbbrevSection(".debug_abbrev"),
DwarfInfoSection(".debug_info"),
DwarfLineSection(".debug_line"),
DwarfLocSection(".debug_loc"),
DwarfARangesSection(".debug_aranges"),
DwarfRangesSection(".debug_ranges"),
- DwarfMacInfoSection(".debug_macinfo") {
+ DwarfMacInfoSection(".debug_macinfo"),
+ DwarfEHFrameSection(".eh_frame"),
+ DwarfExceptionSection(".gcc_except_table"),
+ AsmTransCBE(0) {
}
TargetAsmInfo::~TargetAsmInfo() {
/// Measure the specified inline asm to determine an approximation of its
/// length.
+/// Comments (which run till the next SeparatorChar or newline) do not
+/// count as an instruction.
+/// Any other non-whitespace text is considered an instruction, with
+/// multiple instructions separated by SeparatorChar or newlines.
+/// Variable-length instructions are not handled here; this function
+/// may be overloaded in the target code to do that.
unsigned TargetAsmInfo::getInlineAsmLength(const char *Str) const {
// Count the number of instructions in the asm.
- unsigned NumInsts = 0;
+ bool atInsnStart = true;
+ unsigned Length = 0;
for (; *Str; ++Str) {
if (*Str == '\n' || *Str == SeparatorChar)
- ++NumInsts;
+ atInsnStart = true;
+ if (atInsnStart && !isspace(*Str)) {
+ Length += MaxInstLength;
+ atInsnStart = false;
+ }
+ if (atInsnStart && strncmp(Str, CommentString, strlen(CommentString))==0)
+ atInsnStart = false;
}
- // Multiply by the worst-case length for each instruction.
- return NumInsts * MaxInstLength;
+ return Length;
}
+
+unsigned TargetAsmInfo::PreferredEHDataFormat(DwarfEncoding::Target Reason,
+ bool Global) const {
+ return dwarf::DW_EH_PE_absptr;
+}
+