Index: ELF/Config.h =================================================================== --- ELF/Config.h +++ ELF/Config.h @@ -107,7 +107,7 @@ bool Nostdlib; bool OFormatBinary; bool Pic; - bool Pie; + bool Pie = false; bool PrintGcSections; bool Rela; bool Relocatable; Index: ELF/Driver.cpp =================================================================== --- ELF/Driver.cpp +++ ELF/Driver.cpp @@ -421,6 +421,14 @@ return SortSectionPolicy::Default; } +static bool isOutputPie(opt::InputArgList &Args) { + if (Args.hasArg(OPT_nopie) && Args.hasArg(OPT_pie)) + error("-pie can not be used with -nopie"); + if (!Args.hasArg(OPT_nopie) && !Args.hasArg(OPT_pie)) + return Config->Pie; + return Args.hasArg(OPT_pie); +} + // Initializes Config members by the command line options. void LinkerDriver::readConfigs(opt::InputArgList &Args) { for (auto *Arg : Args.filtered(OPT_L)) @@ -456,7 +464,7 @@ Config->NoGnuUnique = Args.hasArg(OPT_no_gnu_unique); Config->NoUndefinedVersion = Args.hasArg(OPT_no_undefined_version); Config->Nostdlib = Args.hasArg(OPT_nostdlib); - Config->Pie = Args.hasArg(OPT_pie); + Config->Pie = isOutputPie(Args); Config->PrintGcSections = Args.hasArg(OPT_print_gc_sections); Config->Relocatable = Args.hasArg(OPT_relocatable); Config->SaveTemps = Args.hasArg(OPT_save_temps); Index: ELF/Options.td =================================================================== --- ELF/Options.td +++ ELF/Options.td @@ -127,6 +127,8 @@ def noinhibit_exec: F<"noinhibit-exec">, HelpText<"Retain the executable output file whenever it is still usable">; +def nopie: F<"nopie">, HelpText<"Do not create a position independent executable">; + def no_undefined: F<"no-undefined">, HelpText<"Report unresolved symbols even if the linker is creating a shared library">; Index: test/ELF/pie.s =================================================================== --- test/ELF/pie.s +++ test/ELF/pie.s @@ -1,5 +1,12 @@ # REQUIRES: x86 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t1.o + +## Default is no PIE. +# RUN: ld.lld %t1.o -o %t +# RUN: llvm-readobj -file-headers -sections -program-headers -symbols -r %t \ +# RUN: | FileCheck %s --check-prefix=NOPIE + +## Check -pie. # RUN: ld.lld -pie %t1.o -o %t # RUN: llvm-readobj -file-headers -sections -program-headers -symbols -r %t | FileCheck %s @@ -98,5 +105,13 @@ # CHECK-NEXT: Alignment: 8 # CHECK-NEXT: } +## Check -nopie +# RUN: ld.lld -nopie %t1.o -o %t2 +# RUN: llvm-readobj -file-headers -r %t2 | FileCheck %s --check-prefix=NOPIE +# NOPIE-NOT: Type: SharedObject + +# RUN: not ld.lld -pie -nopie %t1.o -o %t2 2>&1 | FileCheck %s --check-prefix=ERR +# ERR: -pie can not be used with -nopie + .globl _start _start: