2006-09-08 06:05:02 +08:00
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//===-- PPCTargetAsmInfo.cpp - PPC asm properties ---------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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2007-12-30 04:36:04 +08:00
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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2006-09-08 06:05:02 +08:00
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the declarations of the DarwinTargetAsmInfo properties.
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//
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//===----------------------------------------------------------------------===//
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#include "PPCTargetAsmInfo.h"
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#include "PPCTargetMachine.h"
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2006-10-05 08:35:50 +08:00
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#include "llvm/Function.h"
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2008-02-28 07:49:15 +08:00
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#include "llvm/Support/Dwarf.h"
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2006-09-08 06:05:02 +08:00
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using namespace llvm;
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2008-02-28 07:49:15 +08:00
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using namespace llvm::dwarf;
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2006-09-08 06:05:02 +08:00
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2006-12-22 04:26:09 +08:00
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PPCTargetAsmInfo::PPCTargetAsmInfo(const PPCTargetMachine &TM) {
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2006-09-08 06:05:02 +08:00
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bool isPPC64 = TM.getSubtargetImpl()->isPPC64();
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2008-08-09 02:23:25 +08:00
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2006-09-08 06:05:02 +08:00
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ZeroDirective = "\t.space\t";
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SetDirective = "\t.set";
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2006-09-08 21:06:56 +08:00
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Data64bitsDirective = isPPC64 ? "\t.quad\t" : 0;
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2006-09-08 06:05:02 +08:00
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AlignmentIsInBytes = false;
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LCOMMDirective = "\t.lcomm\t";
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InlineAsmStart = "# InlineAsm Start";
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InlineAsmEnd = "# InlineAsm End";
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2007-01-16 17:29:17 +08:00
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AssemblerDialect = TM.getSubtargetImpl()->getAsmFlavor();
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}
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2006-10-05 08:35:50 +08:00
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2008-08-09 02:23:25 +08:00
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PPCDarwinTargetAsmInfo::PPCDarwinTargetAsmInfo(const PPCTargetMachine &TM):
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PPCTargetAsmInfo(TM), DarwinTargetAsmInfo(TM) {
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PCSymbol = ".";
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CommentString = ";";
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GlobalPrefix = "_";
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PrivateGlobalPrefix = "L";
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StringConstantPrefix = "\1LC";
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2006-12-22 04:26:09 +08:00
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ConstantPoolSection = "\t.const\t";
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JumpTableDataSection = ".const";
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CStringSection = "\t.cstring";
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2007-03-08 09:25:25 +08:00
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FourByteConstantSection = "\t.literal4\n";
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EightByteConstantSection = "\t.literal8\n";
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ReadOnlySection = "\t.const\n";
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2007-01-30 16:04:53 +08:00
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if (TM.getRelocationModel() == Reloc::Static) {
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StaticCtorsSection = ".constructor";
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StaticDtorsSection = ".destructor";
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} else {
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StaticCtorsSection = ".mod_init_func";
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StaticDtorsSection = ".mod_term_func";
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}
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SwitchToSectionDirective = "\t.section ";
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UsedDirective = "\t.no_dead_strip\t";
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WeakDefDirective = "\t.weak_definition ";
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WeakRefDirective = "\t.weak_reference ";
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HiddenDirective = "\t.private_extern ";
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SupportsExceptionHandling = true;
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NeedsIndirectEncoding = true;
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NeedsSet = true;
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2007-11-05 01:32:10 +08:00
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BSSSection = 0;
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2007-12-21 20:19:44 +08:00
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DwarfEHFrameSection =
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".section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support";
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DwarfExceptionSection = ".section __DATA,__gcc_except_tab";
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GlobalEHDirective = "\t.globl\t";
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SupportsWeakOmittedEHFrame = false;
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DwarfAbbrevSection = ".section __DWARF,__debug_abbrev,regular,debug";
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DwarfInfoSection = ".section __DWARF,__debug_info,regular,debug";
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DwarfLineSection = ".section __DWARF,__debug_line,regular,debug";
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DwarfFrameSection = ".section __DWARF,__debug_frame,regular,debug";
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DwarfPubNamesSection = ".section __DWARF,__debug_pubnames,regular,debug";
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DwarfPubTypesSection = ".section __DWARF,__debug_pubtypes,regular,debug";
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DwarfStrSection = ".section __DWARF,__debug_str,regular,debug";
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DwarfLocSection = ".section __DWARF,__debug_loc,regular,debug";
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DwarfARangesSection = ".section __DWARF,__debug_aranges,regular,debug";
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DwarfRangesSection = ".section __DWARF,__debug_ranges,regular,debug";
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DwarfMacInfoSection = ".section __DWARF,__debug_macinfo,regular,debug";
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2007-01-18 09:15:58 +08:00
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// In non-PIC modes, emit a special label before jump tables so that the
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// linker can perform more accurate dead code stripping.
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if (TM.getRelocationModel() != Reloc::PIC_) {
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// Emit a local label that is preserved until the linker runs.
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JumpTableSpecialLabelPrefix = "l";
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}
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2006-12-22 04:26:09 +08:00
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}
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2008-02-28 07:49:15 +08:00
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/// PreferredEHDataFormat - This hook allows the target to select data
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/// format used for encoding pointers in exception handling data. Reason is
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/// 0 for data, 1 for code labels, 2 for function pointers. Global is true
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/// if the symbol can be relocated.
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unsigned
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PPCDarwinTargetAsmInfo::PreferredEHDataFormat(DwarfEncoding::Target Reason,
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bool Global) const {
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if (Reason == DwarfEncoding::Functions && Global)
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return (DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4);
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else if (Reason == DwarfEncoding::CodeLabels || !Global)
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return DW_EH_PE_pcrel;
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else
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return DW_EH_PE_absptr;
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}
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2008-07-20 05:44:57 +08:00
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PPCLinuxTargetAsmInfo::PPCLinuxTargetAsmInfo(const PPCTargetMachine &TM)
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: PPCTargetAsmInfo(TM)
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{
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CommentString = "#";
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GlobalPrefix = "";
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PrivateGlobalPrefix = "";
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2008-02-13 03:25:12 +08:00
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ConstantPoolSection = "\t.section .rodata.cst4\t";
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JumpTableDataSection = ".section .rodata.cst4";
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CStringSection = "\t.section\t.rodata";
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StaticCtorsSection = ".section\t.ctors,\"aw\",@progbits";
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StaticDtorsSection = ".section\t.dtors,\"aw\",@progbits";
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UsedDirective = "\t# .no_dead_strip\t";
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WeakRefDirective = "\t.weak\t";
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BSSSection = "\t.section\t\".sbss\",\"aw\",@nobits";
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2007-12-21 20:19:44 +08:00
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// Debug Information
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AbsoluteDebugSectionOffsets = true;
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SupportsDebugInformation = true;
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DwarfAbbrevSection = "\t.section\t.debug_abbrev,\"\",@progbits";
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DwarfInfoSection = "\t.section\t.debug_info,\"\",@progbits";
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DwarfLineSection = "\t.section\t.debug_line,\"\",@progbits";
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DwarfFrameSection = "\t.section\t.debug_frame,\"\",@progbits";
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DwarfPubNamesSection ="\t.section\t.debug_pubnames,\"\",@progbits";
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DwarfPubTypesSection ="\t.section\t.debug_pubtypes,\"\",@progbits";
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DwarfStrSection = "\t.section\t.debug_str,\"\",@progbits";
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DwarfLocSection = "\t.section\t.debug_loc,\"\",@progbits";
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DwarfARangesSection = "\t.section\t.debug_aranges,\"\",@progbits";
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DwarfRangesSection = "\t.section\t.debug_ranges,\"\",@progbits";
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DwarfMacInfoSection = "\t.section\t.debug_macinfo,\"\",@progbits";
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2007-12-21 20:19:44 +08:00
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ReadOnlySection = "\t.section\t.rodata";
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FourByteConstantSection = "\t.section\t.rodata.cst4,\"aM\",@progbits,4";
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EightByteConstantSection = "\t.section\t.rodata.cst8,\"aM\",@progbits,8";
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SixteenByteConstantSection = "\t.section\t.rodata.cst16,\"aM\",@progbits,16";
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PCSymbol = ".";
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// Set up DWARF directives
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HasLEB128 = true; // Target asm supports leb128 directives (little-endian)
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// Exceptions handling
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if (!TM.getSubtargetImpl()->isPPC64())
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SupportsExceptionHandling = true;
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AbsoluteEHSectionOffsets = false;
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DwarfEHFrameSection = "\t.section\t.eh_frame,\"aw\",@progbits";
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DwarfExceptionSection = "\t.section\t.gcc_except_table,\"a\",@progbits";
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2006-12-22 04:26:09 +08:00
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}
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2008-02-28 07:49:15 +08:00
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/// PreferredEHDataFormat - This hook allows the target to select data
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/// format used for encoding pointers in exception handling data. Reason is
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/// 0 for data, 1 for code labels, 2 for function pointers. Global is true
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/// if the symbol can be relocated.
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2008-07-20 05:44:57 +08:00
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unsigned
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PPCLinuxTargetAsmInfo::PreferredEHDataFormat(DwarfEncoding::Target Reason,
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bool Global) const {
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// We really need to write something here.
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return TargetAsmInfo::PreferredEHDataFormat(Reason, Global);
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}
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