forked from OSchip/llvm-project
153 lines
6.2 KiB
C++
153 lines
6.2 KiB
C++
//===-- 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;
|
|
|
|
PPCDarwinTargetAsmInfo::PPCDarwinTargetAsmInfo(const PPCTargetMachine &TM):
|
|
PPCTargetAsmInfo<DarwinTargetAsmInfo>(TM) {
|
|
PCSymbol = ".";
|
|
CommentString = ";";
|
|
GlobalPrefix = "_";
|
|
PrivateGlobalPrefix = "L";
|
|
LessPrivateGlobalPrefix = "l";
|
|
StringConstantPrefix = "\1LC";
|
|
ConstantPoolSection = "\t.const\t";
|
|
JumpTableDataSection = ".const";
|
|
CStringSection = "\t.cstring";
|
|
if (TM.getRelocationModel() == Reloc::Static) {
|
|
StaticCtorsSection = ".constructor";
|
|
StaticDtorsSection = ".destructor";
|
|
} else {
|
|
StaticCtorsSection = ".mod_init_func";
|
|
StaticDtorsSection = ".mod_term_func";
|
|
}
|
|
HasSingleParameterDotFile = false;
|
|
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
|
|
PPCDarwinTargetAsmInfo::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;
|
|
}
|
|
|
|
|
|
PPCLinuxTargetAsmInfo::PPCLinuxTargetAsmInfo(const PPCTargetMachine &TM) :
|
|
PPCTargetAsmInfo<ELFTargetAsmInfo>(TM) {
|
|
CommentString = "#";
|
|
GlobalPrefix = "";
|
|
PrivateGlobalPrefix = "";
|
|
ConstantPoolSection = "\t.section .rodata.cst4\t";
|
|
JumpTableDataSection = ".section .rodata.cst4";
|
|
CStringSection = ".rodata.str";
|
|
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";
|
|
|
|
// PPC/Linux normally uses named section for BSS.
|
|
BSSSection_ = getNamedSection("\t.bss",
|
|
SectionFlags::Writeable | SectionFlags::BSS,
|
|
/* Override */ true);
|
|
|
|
// 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";
|
|
|
|
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
|
|
PPCLinuxTargetAsmInfo::PreferredEHDataFormat(DwarfEncoding::Target Reason,
|
|
bool Global) const {
|
|
// We really need to write something here.
|
|
return TargetAsmInfo::PreferredEHDataFormat(Reason, Global);
|
|
}
|
|
|
|
// Instantiate default implementation.
|
|
TEMPLATE_INSTANTIATION(class PPCTargetAsmInfo<TargetAsmInfo>);
|