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EHPreferredDataFormat hook for PPC targets. Looks like Darwin
uses the same encoding everywhere. Linux FIXME'ed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47701 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -14,7 +14,10 @@
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#include "PPCTargetAsmInfo.h"
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#include "PPCTargetMachine.h"
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#include "llvm/Function.h"
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#include "llvm/Support/Dwarf.h"
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using namespace llvm;
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using namespace llvm::dwarf;
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PPCTargetAsmInfo::PPCTargetAsmInfo(const PPCTargetMachine &TM) {
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bool isPPC64 = TM.getSubtargetImpl()->isPPC64();
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@ -27,7 +30,6 @@ PPCTargetAsmInfo::PPCTargetAsmInfo(const PPCTargetMachine &TM) {
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InlineAsmStart = "# InlineAsm Start";
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InlineAsmEnd = "# InlineAsm End";
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AssemblerDialect = TM.getSubtargetImpl()->getAsmFlavor();
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}
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DarwinTargetAsmInfo::DarwinTargetAsmInfo(const PPCTargetMachine &TM)
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@ -86,6 +88,21 @@ DarwinTargetAsmInfo::DarwinTargetAsmInfo(const PPCTargetMachine &TM)
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}
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}
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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 DarwinTargetAsmInfo::PreferredEHDataFormat(unsigned Reason,
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bool Global) const {
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if (Reason == 2 && 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 == 1 || !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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LinuxTargetAsmInfo::LinuxTargetAsmInfo(const PPCTargetMachine &TM)
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: PPCTargetAsmInfo(TM)
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{
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@ -132,3 +149,13 @@ LinuxTargetAsmInfo::LinuxTargetAsmInfo(const PPCTargetMachine &TM)
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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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}
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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 LinuxTargetAsmInfo::PreferredEHDataFormat(unsigned 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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@ -27,10 +27,12 @@ namespace llvm {
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struct DarwinTargetAsmInfo : public PPCTargetAsmInfo {
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explicit DarwinTargetAsmInfo(const PPCTargetMachine &TM);
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virtual unsigned PreferredEHDataFormat(unsigned Reason, bool Global) const;
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};
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struct LinuxTargetAsmInfo : public PPCTargetAsmInfo {
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explicit LinuxTargetAsmInfo(const PPCTargetMachine &TM);
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virtual unsigned PreferredEHDataFormat(unsigned Reason, bool Global) const;
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};
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} // namespace llvm
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