[elfabi] Add option to manually specify file read format

Although llvm-elfabi will attempt to read input files without needing the format to be manually specified, doing so has the potential to introduce extraneous errors that can hinder debugging (since multiple readers may fail in attempts to read the file). This change allows the input file format to be manually specified to force elfabi to use a single reader. This makes it easier to test and debug errors specific to a given reader.

llvm-svn: 350545

2 files changed, 29 insertions, 0 deletions

diff --git a/llvm/test/tools/llvm-elfabi/read-tbe-as-elf.test b/llvm/test/tools/llvm-elfabi/read-tbe-as-elf.test
new file mode 100644
index 00000000000..eaddd38867a
--- /dev/null
+++ b/llvm/test/tools/llvm-elfabi/read-tbe-as-elf.test
@@ -0,0 +1,16 @@
+# RUN: not llvm-elfabi --elf %s --emit-tbe=%t  2>&1 | FileCheck %s
+
+--- !tapi-tbe
+SoName: somelib.so
+TbeVersion: 1.0
+Arch: x86_64
+Symbols:
+  foo: { Type: Func }
+  bar: { Type: Object, Size: 42 }
+  baz: { Type: Object, Size: 8 }
+  not: { Type: Object, Undefined: true, Size: 128 }
+  nor: { Type: Func, Undefined: true }
+...
+
+# CHECK: The file was not recognized as a valid object file
+# CHECK: No file readers succeeded reading `{{.*}}read-tbe-as-elf.test` (unsupported/malformed file?)
diff --git a/llvm/test/tools/llvm-elfabi/read-tbe-as-tbe.test b/llvm/test/tools/llvm-elfabi/read-tbe-as-tbe.test
new file mode 100644
index 00000000000..a5e2d44134e
--- /dev/null
+++ b/llvm/test/tools/llvm-elfabi/read-tbe-as-tbe.test
@@ -0,0 +1,13 @@
+# RUN: llvm-elfabi --tbe %s --emit-tbe=- | FileCheck %s
+
+--- !tapi-tbe
+TbeVersion: 1.0
+Arch: AArch64
+Symbols: {}
+...
+
+# CHECK:      --- !tapi-tbe
+# CHECK-NEXT: TbeVersion: {{[1-9]\d*\.(0|([1-9]\d*))}}
+# CHECK-NEXT: Arch: AArch64
+# CHECK-NEXT: Symbols: {}
+# CHECK-NEXT: ...