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//===-- PPCTargetAsmInfo.cpp - PPC asm properties ---------------*- C++ -*-===//
//
// 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 DarwinTargetAsmInfo properties.
//
//===----------------------------------------------------------------------===//
#include "PPCTargetAsmInfo.h"
#include "PPCTargetMachine.h"
#include "llvm/Function.h"
#include "llvm/Support/Dwarf.h"
using namespace llvm;
using namespace llvm::dwarf;
PPCTargetAsmInfo::PPCTargetAsmInfo(const PPCTargetMachine &TM) {
bool isPPC64 = TM.getSubtargetImpl()->isPPC64();
ZeroDirective = "\t.space\t";
SetDirective = "\t.set";
Data64bitsDirective = isPPC64 ? "\t.quad\t" : 0;
AlignmentIsInBytes = false;
LCOMMDirective = "\t.lcomm\t";
InlineAsmStart = "# InlineAsm Start";
InlineAsmEnd = "# InlineAsm End";
AssemblerDialect = TM.getSubtargetImpl()->getAsmFlavor();
}
DarwinTargetAsmInfo::DarwinTargetAsmInfo(const PPCTargetMachine &TM)
: PPCTargetAsmInfo(TM)
{
PCSymbol = ".";
CommentString = ";";
GlobalPrefix = "_";
PrivateGlobalPrefix = "L";
ConstantPoolSection = "\t.const\t";
JumpTableDataSection = ".const";
CStringSection = "\t.cstring";
FourByteConstantSection = "\t.literal4\n";
EightByteConstantSection = "\t.literal8\n";
ReadOnlySection = "\t.const\n";
if (TM.getRelocationModel() == Reloc::Static) {
StaticCtorsSection = ".constructor";
StaticDtorsSection = ".destructor";
} else {
StaticCtorsSection = ".mod_init_func";
StaticDtorsSection = ".mod_term_func";
}
SwitchToSectionDirective = "\t.section ";
UsedDirective = "\t.no_dead_strip\t";
WeakDefDirective = "\t.weak_definition ";
WeakRefDirective = "\t.weak_reference ";
HiddenDirective = "\t.private_extern ";
SupportsExceptionHandling = true;
NeedsIndirectEncoding = true;
NeedsSet = true;
BSSSection = 0;
DwarfEHFrameSection =
".section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support";
DwarfExceptionSection = ".section __DATA,__gcc_except_tab";
GlobalEHDirective = "\t.globl\t";
SupportsWeakOmittedEHFrame = false;
DwarfAbbrevSection = ".section __DWARF,__debug_abbrev,regular,debug";
DwarfInfoSection = ".section __DWARF,__debug_info,regular,debug";
DwarfLineSection = ".section __DWARF,__debug_line,regular,debug";
DwarfFrameSection = ".section __DWARF,__debug_frame,regular,debug";
DwarfPubNamesSection = ".section __DWARF,__debug_pubnames,regular,debug";
DwarfPubTypesSection = ".section __DWARF,__debug_pubtypes,regular,debug";
DwarfStrSection = ".section __DWARF,__debug_str,regular,debug";
DwarfLocSection = ".section __DWARF,__debug_loc,regular,debug";
DwarfARangesSection = ".section __DWARF,__debug_aranges,regular,debug";
DwarfRangesSection = ".section __DWARF,__debug_ranges,regular,debug";
DwarfMacInfoSection = ".section __DWARF,__debug_macinfo,regular,debug";
// In non-PIC modes, emit a special label before jump tables so that the
// linker can perform more accurate dead code stripping.
if (TM.getRelocationModel() != Reloc::PIC_) {
// Emit a local label that is preserved until the linker runs.
JumpTableSpecialLabelPrefix = "l";
}
}
/// PreferredEHDataFormat - This hook allows the target to select data
/// format used for encoding pointers in exception handling data. Reason is
/// 0 for data, 1 for code labels, 2 for function pointers. Global is true
/// if the symbol can be relocated.
unsigned DarwinTargetAsmInfo::PreferredEHDataFormat(DwarfEncoding::Target Reason,
bool Global) const {
if (Reason == DwarfEncoding::Functions && Global)
return (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4);
else if (Reason == DwarfEncoding::CodeLabels || !Global)
return DW_EH_PE_pcrel;
else
return DW_EH_PE_absptr;
}
LinuxTargetAsmInfo::LinuxTargetAsmInfo(const PPCTargetMachine &TM)
: PPCTargetAsmInfo(TM)
{
CommentString = "#";
GlobalPrefix = "";
PrivateGlobalPrefix = "";
ConstantPoolSection = "\t.section .rodata.cst4\t";
JumpTableDataSection = ".section .rodata.cst4";
CStringSection = "\t.section\t.rodata";
StaticCtorsSection = ".section\t.ctors,\"aw\",@progbits";
StaticDtorsSection = ".section\t.dtors,\"aw\",@progbits";
UsedDirective = "\t# .no_dead_strip\t";
WeakRefDirective = "\t.weak\t";
BSSSection = "\t.section\t\".sbss\",\"aw\",@nobits";
// Debug Information
AbsoluteDebugSectionOffsets = true;
SupportsDebugInformation = true;
DwarfAbbrevSection = "\t.section\t.debug_abbrev,\"\",@progbits";
DwarfInfoSection = "\t.section\t.debug_info,\"\",@progbits";
DwarfLineSection = "\t.section\t.debug_line,\"\",@progbits";
DwarfFrameSection = "\t.section\t.debug_frame,\"\",@progbits";
DwarfPubNamesSection ="\t.section\t.debug_pubnames,\"\",@progbits";
DwarfPubTypesSection ="\t.section\t.debug_pubtypes,\"\",@progbits";
DwarfStrSection = "\t.section\t.debug_str,\"\",@progbits";
DwarfLocSection = "\t.section\t.debug_loc,\"\",@progbits";
DwarfARangesSection = "\t.section\t.debug_aranges,\"\",@progbits";
DwarfRangesSection = "\t.section\t.debug_ranges,\"\",@progbits";
DwarfMacInfoSection = "\t.section\t.debug_macinfo,\"\",@progbits";
ReadOnlySection = "\t.section\t.rodata";
FourByteConstantSection = "\t.section\t.rodata.cst4,\"aM\",@progbits,4";
EightByteConstantSection = "\t.section\t.rodata.cst8,\"aM\",@progbits,8";
SixteenByteConstantSection = "\t.section\t.rodata.cst16,\"aM\",@progbits,16";
PCSymbol = ".";
// Set up DWARF directives
HasLEB128 = true; // Target asm supports leb128 directives (little-endian)
// Exceptions handling
if (!TM.getSubtargetImpl()->isPPC64())
SupportsExceptionHandling = true;
AbsoluteEHSectionOffsets = false;
DwarfEHFrameSection = "\t.section\t.eh_frame,\"aw\",@progbits";
DwarfExceptionSection = "\t.section\t.gcc_except_table,\"a\",@progbits";
}
/// PreferredEHDataFormat - This hook allows the target to select data
/// format used for encoding pointers in exception handling data. Reason is
/// 0 for data, 1 for code labels, 2 for function pointers. Global is true
/// if the symbol can be relocated.
unsigned LinuxTargetAsmInfo::PreferredEHDataFormat(DwarfEncoding::Target Reason,
bool Global) const {
// We really need to write something here.
return TargetAsmInfo::PreferredEHDataFormat(Reason, Global);
}
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