From d901dd9631c935207aa911002d6b22c63f0cfe07 Mon Sep 17 00:00:00 2001
From: Joerg Sonnenberger <joerg@bec.de>
Date: Thu, 11 Aug 2016 18:47:43 +0000
Subject: Merging r271801:
 ------------------------------------------------------------------------
 r271801 | joerg | 2016-06-04 22:03:26 +0200 (Sa, 04 Jun 2016) | 3 lines

Add PIE magic for NetBSD. Add tests for the correct flags for
non-shared, PIE and shared output mode.

------------------------------------------------------------------------

llvm-svn: 278388
---
 clang/lib/Driver/Tools.cpp | 19 ++++++++++---------
 clang/test/Driver/netbsd.c | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 46 insertions(+), 9 deletions(-)

diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index b7ac24f..b39d117 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -8181,6 +8181,7 @@ void netbsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
     if (Args.hasArg(options::OPT_shared)) {
       CmdArgs.push_back("-Bshareable");
     } else {
+      Args.AddAllArgs(CmdArgs, options::OPT_pie);
       CmdArgs.push_back("-dynamic-linker");
       CmdArgs.push_back("/libexec/ld.elf_so");
     }
@@ -8282,15 +8283,15 @@ void netbsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
     if (!Args.hasArg(options::OPT_shared)) {
       CmdArgs.push_back(
           Args.MakeArgString(getToolChain().GetFilePath("crt0.o")));
+    }
+    CmdArgs.push_back(
+        Args.MakeArgString(getToolChain().GetFilePath("crti.o")));
+    if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie)) {
       CmdArgs.push_back(
-          Args.MakeArgString(getToolChain().GetFilePath("crti.o")));
-      CmdArgs.push_back(
-          Args.MakeArgString(getToolChain().GetFilePath("crtbegin.o")));
+          Args.MakeArgString(getToolChain().GetFilePath("crtbeginS.o")));
     } else {
       CmdArgs.push_back(
-          Args.MakeArgString(getToolChain().GetFilePath("crti.o")));
-      CmdArgs.push_back(
-          Args.MakeArgString(getToolChain().GetFilePath("crtbeginS.o")));
+          Args.MakeArgString(getToolChain().GetFilePath("crtbegin.o")));
     }
   }
 
@@ -8356,12 +8357,12 @@ void netbsd::Linker::ConstructJob(Compilation &C, const JobAction &JA,
   }
 
   if (!Args.hasArg(options::OPT_nostdlib, options::OPT_nostartfiles)) {
-    if (!Args.hasArg(options::OPT_shared))
+    if (Args.hasArg(options::OPT_shared) || Args.hasArg(options::OPT_pie))
       CmdArgs.push_back(
-          Args.MakeArgString(getToolChain().GetFilePath("crtend.o")));
+          Args.MakeArgString(getToolChain().GetFilePath("crtendS.o")));
     else
       CmdArgs.push_back(
-          Args.MakeArgString(getToolChain().GetFilePath("crtendS.o")));
+          Args.MakeArgString(getToolChain().GetFilePath("crtend.o")));
     CmdArgs.push_back(Args.MakeArgString(getToolChain().GetFilePath("crtn.o")));
   }
 
diff --git a/clang/test/Driver/netbsd.c b/clang/test/Driver/netbsd.c
index 351fbdf..34757b5 100644
--- a/clang/test/Driver/netbsd.c
+++ b/clang/test/Driver/netbsd.c
@@ -1,5 +1,15 @@
 // RUN: %clang -no-canonical-prefixes -target x86_64--netbsd \
 // RUN: --sysroot=%S/Inputs/basic_netbsd_tree %s -### 2>&1 \
+// RUN: | FileCheck -check-prefix=STATIC %s
+// RUN: %clang -no-canonical-prefixes -target x86_64--netbsd \
+// RUN: -pie --sysroot=%S/Inputs/basic_netbsd_tree %s -### 2>&1 \
+// RUN: | FileCheck -check-prefix=PIE %s
+// RUN: %clang -no-canonical-prefixes -target x86_64--netbsd \
+// RUN: -shared --sysroot=%S/Inputs/basic_netbsd_tree %s -### 2>&1 \
+// RUN: | FileCheck -check-prefix=SHARED %s
+
+// RUN: %clang -no-canonical-prefixes -target x86_64--netbsd \
+// RUN: --sysroot=%S/Inputs/basic_netbsd_tree %s -### 2>&1 \
 // RUN: | FileCheck -check-prefix=X86_64 %s
 // RUN: %clang -no-canonical-prefixes -target x86_64--netbsd7.0.0 \
 // RUN: --sysroot=%S/Inputs/basic_netbsd_tree %s -### 2>&1 \
@@ -105,6 +115,32 @@
 // RUN: --sysroot=%S/Inputs/basic_netbsd_tree %s -### 2>&1 \
 // RUN: | FileCheck -check-prefix=S-POWERPC64 %s
 
+// STATIC: ld{{.*}}"
+// STATIC-NOT: "-pie"
+// STATIC-NOT: "-Bshareable"
+// STATIC: "-dynamic-linker" "/libexec/ld.elf_so"
+// STATIC-NOT: "-pie"
+// STATIC-NOT: "-Bshareable"
+// STATIC: "{{.*}}/usr/lib{{/|\\\\}}crt0.o"
+// STATIC: "{{.*}}/usr/lib{{/|\\\\}}crti.o" "{{.*}}/usr/lib{{/|\\\\}}crtbegin.o"
+// STATIC: "{{.*}}/usr/lib{{/|\\\\}}crtend.o" "{{.*}}/usr/lib{{/|\\\\}}crtn.o"
+
+// SHARED: ld{{.*}}"
+// SHARED-NOT: "-pie"
+// SHARED-NOT: "-dynamic-linker"
+// SHARED-NOT: "{{.*}}/usr/lib{{/|\\\\}}crt0.o"
+// SHARED: "{{.*}}/usr/lib{{/|\\\\}}crti.o" "{{.*}}/usr/lib{{/|\\\\}}crtbeginS.o"
+// SHARED: "{{.*}}/usr/lib{{/|\\\\}}crtendS.o" "{{.*}}/usr/lib{{/|\\\\}}crtn.o"
+
+// PIE: ld{{.*}}"
+// PIE-NOT: "-Bshareable"
+// PIE "-pie" "-dynamic-linker" "/libexec/ld.elf_so"
+// PIE-NOT: "-Bshareable"
+// PIE: "{{.*}}/usr/lib{{/|\\\\}}crt0.o" "{{.*}}/usr/lib{{/|\\\\}}crti.o"
+// PIE: "{{.*}}/usr/lib{{/|\\\\}}crtbeginS.o"
+// PIE: "{{.*}}/usr/lib{{/|\\\\}}crtendS.o"
+// PIE: "{{.*}}/usr/lib{{/|\\\\}}crtn.o"
+
 // X86_64: clang{{.*}}" "-cc1" "-triple" "x86_64--netbsd"
 // X86_64: ld{{.*}}" "--eh-frame-hdr" "-dynamic-linker" "/libexec/ld.elf_so"
 // X86_64: "-o" "a.out" "{{.*}}/usr/lib{{/|\\\\}}crt0.o" "{{.*}}/usr/lib{{/|\\\\}}crti.o"
-- 
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