[llvm-objcopy][MachO] Implement --strip-all

Reviewers: alexshap, rupprecht, jdoerfert, jhenderson

Reviewed By: alexshap

Subscribers: jakehehrlich, abrachet, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D66281

3 files changed, 811 insertions, 0 deletions

diff --git a/llvm/test/tools/llvm-objcopy/MachO/Inputs/strip-all-with-dwarf.yaml b/llvm/test/tools/llvm-objcopy/MachO/Inputs/strip-all-with-dwarf.yaml
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diff --git a/llvm/test/tools/llvm-objcopy/MachO/Inputs/strip-all.yaml b/llvm/test/tools/llvm-objcopy/MachO/Inputs/strip-all.yaml
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+      n_value:         0
+    - n_strx:          180
+      n_type:          0x0E
+      n_sect:          3
+      n_desc:          0
+      n_value:         4294971392
+    - n_strx:          2
+      n_type:          0x0F
+      n_sect:          1
+      n_desc:          16
+      n_value:         4294967296
+    - n_strx:          22
+      n_type:          0x0F
+      n_sect:          4
+      n_desc:          0
+      n_value:         4294971396
+    - n_strx:          27
+      n_type:          0x0F
+      n_sect:          1
+      n_desc:          0
+      n_value:         4294971280
+    - n_strx:          33
+      n_type:          0x01
+      n_sect:          0
+      n_desc:          256
+      n_value:         0
+  StringTable:
+    - ' '
+    - __mh_execute_header
+    - _foo
+    - _main
+    - dyld_stub_binder
+    - '/Users/anonymous/llvm-project/llvm/build/'
+    - strip.c
+    - '/var/folders/g7/l0p5czpd2jz6w0gswg6cwgjc0000gn/T/strip-95c4bf.o'
+    - _main
+    - _bar
+    - _foo
+    - _bar
+    - ''
+    - ''
+    - ''
+    - ''
+    - ''
+    - ''
+    - ''
+...
diff --git a/llvm/test/tools/llvm-objcopy/MachO/strip-all.test b/llvm/test/tools/llvm-objcopy/MachO/strip-all.test
new file mode 100644
index 00000000000..17646946534
--- /dev/null
+++ b/llvm/test/tools/llvm-objcopy/MachO/strip-all.test
@@ -0,0 +1,43 @@
+## Show that llvm-objcopy/llvm-strip removes all symbols and debug sections.
+
+# RUN: yaml2obj %p/Inputs/strip-all.yaml > %t.exec
+# RUN: yaml2obj %p/Inputs/strip-all-with-dwarf.yaml > %t.dwarf
+
+# RUN: llvm-objcopy --strip-all %t.exec %t.exec.stripped
+# RUN: llvm-readobj --sections --relocations --symbols %t.exec.stripped \
+# RUN:   | FileCheck --check-prefixes=COMMON,EXEC %s
+
+# RUN: llvm-objcopy --strip-all %t.dwarf %t.dwarf.stripped
+# RUN: llvm-readobj --sections --relocations --symbols %t.dwarf.stripped \
+# RUN:   | FileCheck --check-prefixes=COMMON,DWARF %s
+
+## The output of "llvm-strip" should be identical with that of
+## "llvm-strip --strip-all" and "llvm-objcopy --strip-all".
+# RUN: llvm-strip %t.exec -o %t2
+# RUN: llvm-strip --strip-all %t.exec -o %t3
+# cmp %t2 %t.exec.stripped
+# cmp %t3 %t.exec.stripped
+
+# RUN: llvm-strip %t.dwarf -o %t4
+# RUN: llvm-strip --strip-all %t.dwarf -o %t5
+# cmp %t4 %t.dwarf.stripped
+# cmp %t5 %t.dwarf.stripped
+
+## Make sure that debug sections are removed.
+# DWARF:       Sections [
+# DWARF-NOT:     Name: __debug_str
+# DWARF-NOT:     Name: __debug_abbrev
+# DWARF-NOT:     Name: __debug_info
+# DWARF-NOT:     Name: __debug_macinfo
+# DWARF-NOT:     Name: __apple_names
+# DWARF-NOT:     Name: __apple_objc
+# DWARF-NOT:     Name: __apple_namespac
+# DWARF-NOT:     Name: __apple_types
+# DWARF-NOT:     Name: __debug_line
+# DWARF:       ]
+
+## Make sure that all relocations and symbols are removed.
+# COMMON:      Relocations [
+# COMMON-NEXT: ]
+# COMMON:      Symbols [
+# COMMON-NEXT: ]