diff options
| author |   kettenis <kettenis@openbsd.org> | 2020-04-04 09:54:04 +0000 |
|---|---|---|
| committer | kettenis <kettenis@openbsd.org> | 2020-04-04 09:54:04 +0000 |
| commit | 3159fc8f233e5ccb749cd05b58cf5b93b8f45263 (patch) | |
| tree | 131142a3b6f2cf2b32a06a8ce1e0355fff9c0107 /gnu/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp | |
| parent | Prevent shadowing of local variable by the EV_SET() macro. (diff) | |
| download | wireguard-openbsd-3159fc8f233e5ccb749cd05b58cf5b93b8f45263.tar.xz wireguard-openbsd-3159fc8f233e5ccb749cd05b58cf5b93b8f45263.zip | |
Fix "small pic" secure plt support.
ok mortimer@
Diffstat (limited to 'gnu/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp')
| -rw-r--r-- | gnu/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gnu/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp b/gnu/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp index 04aa3c9b1e2..82e18cef984 100644 --- a/gnu/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp +++ b/gnu/llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp @@ -575,14 +575,19 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) { // Transform %rd = UpdateGBR(%rt, %ri) // Into: lwz %rt, .L0$poff - .L0$pb(%ri) // add %rd, %rt, %ri - // or into (if secure plt mode is on): + // or into (-msecure-plt -fpic): + // addis r30, r30, _GLOBAL_OFFSET_TABLE_ - .L0$pb@ha + // addi r30, r30, _GLOBAL_OFFSET_TABLE_ - .L0$pb@l + // or into (-msecure-plt -fPIC): // addis r30, r30, .LTOC - .L0$pb@ha // addi r30, r30, .LTOC - .L0$pb@l // Get the offset from the GOT Base Register to the GOT LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, isDarwin); if (Subtarget->isSecurePlt() && isPositionIndependent() ) { unsigned PICR = TmpInst.getOperand(0).getReg(); - MCSymbol *LTOCSymbol = OutContext.getOrCreateSymbol(StringRef(".LTOC")); + StringRef Name = (PL == PICLevel::SmallPIC ? + "_GLOBAL_OFFSET_TABLE_" : ".LTOC"); + MCSymbol *LTOCSymbol = OutContext.getOrCreateSymbol(Name); const MCExpr *PB = MCSymbolRefExpr::create(MF->getPICBaseSymbol(), OutContext); |