Reland "[llvm][llvm-objcopy] Added support for outputting to binary in llvm-objcopy"

This change adds the "-O binary" flag which directs llvm-objcopy to
output the object file to the same format as GNU objcopy does when given
the flag "-O binary". This was done by splitting the Object class into
two subclasses ObjectELF and ObjectBianry which each output a different
format but relay on the same code to read in the Object in Object.

Patch by Jake Ehrlich

Differential Revision: https://reviews.llvm.org/D34480

llvm-svn: 310127

1 files changed, 37 insertions, 0 deletions

diff --git a/llvm/test/tools/llvm-objcopy/basic-align-copy.test b/llvm/test/tools/llvm-objcopy/basic-align-copy.test
new file mode 100644
index 00000000000..5904b043ec0
--- /dev/null
+++ b/llvm/test/tools/llvm-objcopy/basic-align-copy.test
@@ -0,0 +1,37 @@
+# RUN: yaml2obj %s -o %t
+# RUN: llvm-objcopy -O binary %t %t2
+# RUN: od -t x2 %t2 | FileCheck %s
+# RUN: wc -c < %t2 | FileCheck %s --check-prefix=SIZE
+
+!ELF
+FileHeader:
+  Class:           ELFCLASS64
+  Data:            ELFDATA2LSB
+  Type:            ET_EXEC
+  Machine:         EM_X86_64
+Sections:
+  - Name:            .text
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
+    AddressAlign:    0x0000000000001000
+    Content:         "c3c3c3c3"
+  - Name:            .data
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC, SHF_EXECINSTR ]
+    AddressAlign:    0x0000000000001000
+    Content:         "3232"
+ProgramHeaders:
+  - Type: PT_LOAD
+    Flags: [ PF_X, PF_R ]
+    Sections:
+      - Section: .text
+  - Type: PT_LOAD
+    Flags: [ PF_R ]
+    Sections:
+      - Section: .data
+
+# CHECK:       0000000 c3c3 c3c3 0000 0000 0000 0000 0000 0000
+# CHECK-NEXT:  0000020 0000 0000 0000 0000 0000 0000 0000 0000
+# CHECK-NEXT:  *
+# CHECK-NEXT:  0010000 3232
+# SIZE:        4098