From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Mon, 2 Apr 2018 21:11:13 +0000 (+0000)
Subject: Define TrapInst for ppc64.
X-Git-Tag: llvmorg-7.0.0-rc1~9176
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3e7d6fc2c6e0e3f229c5060a985b17015738da07;p=platform%2Fupstream%2Fllvm.git

Define TrapInst for ppc64.

This is nice for testing since it is the first TrapInst whose bytes
are not all the same.

llvm-svn: 329014
---

diff --git a/lld/ELF/Arch/PPC64.cpp b/lld/ELF/Arch/PPC64.cpp
index 8480915..0da898d 100644
--- a/lld/ELF/Arch/PPC64.cpp
+++ b/lld/ELF/Arch/PPC64.cpp
@@ -93,6 +93,8 @@ PPC64::PPC64() {
   // And because the lowest non-zero 256M boundary is 0x10000000, PPC64 linkers
   // use 0x10000000 as the starting address.
   DefaultImageBase = 0x10000000;
+
+  TrapInstr = 0x7fe00008;
 }
 
 static uint32_t getEFlags(InputFile *File) {
diff --git a/lld/test/ELF/fill-trap-ppc.s b/lld/test/ELF/fill-trap-ppc.s
new file mode 100644
index 0000000..f885f73
--- /dev/null
+++ b/lld/test/ELF/fill-trap-ppc.s
@@ -0,0 +1,30 @@
+# REQUIRES: ppc
+
+# RUN: llvm-mc -filetype=obj -triple=powerpc64le-linux %s -o %t.o
+# RUN: ld.lld %t.o -o %t.ppc64le
+# RUN: llvm-readobj -program-headers %t.ppc64le | FileCheck %s
+# RUN: od -Ax -t x4 -N16 -j0x10ff0 %t.ppc64le | FileCheck %s -check-prefix=FILL
+
+# RUN: llvm-mc -filetype=obj -triple=powerpc64-linux %s -o %t.o
+# RUN: ld.lld %t.o -o %t.ppc64
+# RUN: llvm-readobj -program-headers %t.ppc64 | FileCheck %s
+# RUN: od -Ax -t x4 -N16 -j0x10ff0 %t.ppc64 | FileCheck %s -check-prefix=FILL
+
+# CHECK: ProgramHeader {
+# CHECK:   Type: PT_LOAD
+# CHECK:        Offset: 0x10000{{$}}
+# CHECK-NEXT:   VirtualAddress:
+# CHECK-NEXT:   PhysicalAddress:
+# CHECK-NEXT:   FileSize: 4096
+# CHECK-NEXT:   MemSize:
+# CHECK-NEXT:   Flags [
+# CHECK-NEXT:     PF_R
+# CHECK-NEXT:     PF_X
+# CHECK-NEXT:   ]
+
+## Check that executable page is filled with traps at its end.
+# FILL: 010ff0 7fe00008 7fe00008 7fe00008 7fe00008
+
+.globl _start
+_start:
+  nop