[lld] r329014 - Define TrapInst for ppc64.

[Rafael Espindola via llvm-commits]

Author: rafael
Date: Mon Apr  2 14:11:13 2018
New Revision: 329014

URL: http://llvm.org/viewvc/llvm-project?rev=329014&view=rev
Log:
Define TrapInst for ppc64.

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

Added:
    lld/trunk/test/ELF/fill-trap-ppc.s
Modified:
    lld/trunk/ELF/Arch/PPC64.cpp

Modified: lld/trunk/ELF/Arch/PPC64.cpp
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/ELF/Arch/PPC64.cpp?rev=329014&r1=329013&r2=329014&view=diff
==============================================================================
--- lld/trunk/ELF/Arch/PPC64.cpp (original)
+++ lld/trunk/ELF/Arch/PPC64.cpp Mon Apr  2 14:11:13 2018
@@ -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) {

Added: lld/trunk/test/ELF/fill-trap-ppc.s
URL: http://llvm.org/viewvc/llvm-project/lld/trunk/test/ELF/fill-trap-ppc.s?rev=329014&view=auto
==============================================================================
--- lld/trunk/test/ELF/fill-trap-ppc.s (added)
+++ lld/trunk/test/ELF/fill-trap-ppc.s Mon Apr  2 14:11:13 2018
@@ -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