[PATCH] D82852: [ELF][test] Add some additional eh_frame/eh_frame_hdr testing

[James Henderson via Phabricator via llvm-commits]

jhenderson created this revision.
jhenderson added reviewers: ruiu, grimar, MaskRay, peter.smith.
Herald added a subscriber: emaste.
Herald added a reviewer: espindola.
Herald added a project: LLVM.

This patch adds a few extra cases to the existing testing for eh_frame and eh_frame_hdr behaviour in LLD. They all come from a private testsuite we are trying to migrate to lit.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D82852

Files:
  lld/test/ELF/eh-frame-hdr-comdat.s
  lld/test/ELF/eh-frame-merge.s
  lld/test/ELF/eh-frame-type.test


Index: lld/test/ELF/eh-frame-type.test
===================================================================
--- lld/test/ELF/eh-frame-type.test
+++ lld/test/ELF/eh-frame-type.test
@@ -1,11 +1,15 @@
-# RUN: yaml2obj %s -o %t.o
-# RUN: ld.lld %t.o -o %t -shared
-# RUN: llvm-readobj -S %t | FileCheck %s
+# RUN: yaml2obj %s -o %t1.o --docnum=1
+# RUN: ld.lld %t1.o -o %t1 -shared
+# RUN: llvm-readobj -S %t1 | FileCheck %s
+
+# RUN: yaml2obj %s -o %t2.o --docnum=2
+# RUN: ld.lld %t2.o -o %t2 -shared
+# RUN: llvm-readobj -S %t2 | FileCheck %s
 
 # CHECK:      Name: .eh_frame
 # CHECK-NEXT: Type: SHT_PROGBITS
 
-!ELF
+--- !ELF
 FileHeader:
   Class:           ELFCLASS64
   Data:            ELFDATA2LSB
@@ -15,3 +19,14 @@
   - Name:            .eh_frame
     Type:            SHT_PROGBITS
     Flags:           [ SHF_ALLOC ]
+
+--- !ELF
+FileHeader:
+  Class:           ELFCLASS64
+  Data:            ELFDATA2LSB
+  Type:            ET_REL
+  Machine:         EM_X86_64
+Sections:
+  - Name:            .eh_frame
+    Type:            SHT_X86_64_UNWIND
+    Flags:           [ SHF_ALLOC ]
Index: lld/test/ELF/eh-frame-merge.s
===================================================================
--- lld/test/ELF/eh-frame-merge.s
+++ lld/test/ELF/eh-frame-merge.s
@@ -3,6 +3,11 @@
 // RUN: ld.lld --hash-style=sysv %t.o %t.o -o %t -shared
 // RUN: llvm-readobj -S --section-data %t | FileCheck %s
 
+// Also show that the merging happens when going via a -r link.
+// RUN: ld.lld -r %t.o %t.o -o %t.r.o
+// RUN: ld.lld --hash-style=sysv %t.r.o -o %t2 -shared
+// RUN: llvm-readobj -S --section-data %t2 | FileCheck %s
+
         .section	foo,"ax", at progbits
 	.cfi_startproc
         nop
Index: lld/test/ELF/eh-frame-hdr-comdat.s
===================================================================
--- /dev/null
+++ lld/test/ELF/eh-frame-hdr-comdat.s
@@ -0,0 +1,21 @@
+# REQUIRES: x86
+
+# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t
+# RUN: ld.lld %t %t -o %t2 --eh-frame-hdr
+# RUN: llvm-objdump -s --section-headers %t2 | FileCheck %s
+
+## Check .eh_frame_hdr contains single FDE and no garbage data at tail.
+# CHECK: Sections:
+# CHECK: Idx Name          Size
+# CHECK:     .eh_frame_hdr 00000014
+
+# CHECK: Contents of section .eh_frame_hdr:
+# CHECK-NEXT: 200158 011b033b 14000000 01000000
+##                                     ^ FDE count
+
+.section .text.bar,"axG", at progbits,bar,comdat,unique,0
+.global bar
+bar:
+.cfi_startproc
+    ret
+.cfi_endproc


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D82852.274391.patch
Type: text/x-patch
Size: 2484 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20200630/ea593868/attachment.bin>