[lld] r284388 - [ELF] - Add support for -nopie

[George Rimar via llvm-commits]

Author: grimar
Date: Mon Oct 17 09:42:11 2016
New Revision: 284388

URL: http://llvm.org/viewvc/llvm-project?rev=284388&view=rev
Log:
[ELF] - Add support for -nopie

This is https://llvm.org/bugs/show_bug.cgi?id=30696,

Differential revision: https://reviews.llvm.org/D25676

Modified:
    lld/trunk/ELF/Driver.cpp
    lld/trunk/ELF/Options.td
    lld/trunk/test/ELF/pie.s

Modified: lld/trunk/ELF/Driver.cpp
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/Driver.cpp?rev=284388&r1=284387&r2=284388&view=diff
==============================================================================
--- lld/trunk/ELF/Driver.cpp (original)
+++ lld/trunk/ELF/Driver.cpp Mon Oct 17 09:42:11 2016
@@ -456,7 +456,7 @@ void LinkerDriver::readConfigs(opt::Inpu
   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 = getArg(Args, OPT_pie, OPT_nopie, false);
   Config->PrintGcSections = Args.hasArg(OPT_print_gc_sections);
   Config->Relocatable = Args.hasArg(OPT_relocatable);
   Config->SaveTemps = Args.hasArg(OPT_save_temps);

Modified: lld/trunk/ELF/Options.td
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/Options.td?rev=284388&r1=284387&r2=284388&view=diff
==============================================================================
--- lld/trunk/ELF/Options.td (original)
+++ lld/trunk/ELF/Options.td Mon Oct 17 09:42:11 2016
@@ -127,6 +127,8 @@ def no_whole_archive: F<"no-whole-archiv
 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">;
 

Modified: lld/trunk/test/ELF/pie.s
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/test/ELF/pie.s?rev=284388&r1=284387&r2=284388&view=diff
==============================================================================
--- lld/trunk/test/ELF/pie.s (original)
+++ lld/trunk/test/ELF/pie.s Mon Oct 17 09:42:11 2016
@@ -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 +105,10 @@
 # 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
+
 .globl _start
 _start: