Move ARM build attributes into Support

This moves the ARM build attributes definitions and support routines into the
Support library.  The support routines simply permit the conversion of the value
to and from a string representation.

The movement is prompted in order to permit access to the constants and string
representations from readobj in order to facilitate decoding of the attributes
section.

llvm-svn: 199575

1 files changed, 95 insertions, 0 deletions

diff --git a/llvm/lib/Support/ARMBuildAttrs.cpp b/llvm/lib/Support/ARMBuildAttrs.cpp
new file mode 100644
index 00000000000..14b7b0dd31d
--- /dev/null
+++ b/llvm/lib/Support/ARMBuildAttrs.cpp
@@ -0,0 +1,95 @@
+//===-- ARMBuildAttrs.cpp - ARM Build Attributes --------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Support/ARMBuildAttributes.h"
+#include "llvm/ADT/StringRef.h"
+
+using namespace llvm;
+
+namespace {
+const struct {
+  ARMBuildAttrs::AttrType Attr;
+  const char *TagName;
+} ARMAttributeTags[] = {
+  { ARMBuildAttrs::File, "Tag_File" },
+  { ARMBuildAttrs::Section, "Tag_Section" },
+  { ARMBuildAttrs::Symbol, "Tag_Symbol" },
+  { ARMBuildAttrs::CPU_raw_name, "Tag_CPU_raw_name" },
+  { ARMBuildAttrs::CPU_name, "Tag_CPU_name" },
+  { ARMBuildAttrs::CPU_arch, "Tag_CPU_arch" },
+  { ARMBuildAttrs::CPU_arch_profile, "Tag_CPU_arch_profile" },
+  { ARMBuildAttrs::ARM_ISA_use, "Tag_ARM_ISA_use" },
+  { ARMBuildAttrs::THUMB_ISA_use, "Tag_THUMB_ISA_use" },
+  { ARMBuildAttrs::FP_arch, "Tag_FP_arch" },
+  { ARMBuildAttrs::WMMX_arch, "Tag_WMMX_arch" },
+  { ARMBuildAttrs::Advanced_SIMD_arch, "Tag_Advanced_SIMD_arch" },
+  { ARMBuildAttrs::PCS_config, "Tag_PCS_config" },
+  { ARMBuildAttrs::ABI_PCS_R9_use, "Tag_ABI_PCS_R9_use" },
+  { ARMBuildAttrs::ABI_PCS_RW_data, "Tag_ABI_PCS_RW_data" },
+  { ARMBuildAttrs::ABI_PCS_RO_data, "Tag_ABI_PCS_RO_data" },
+  { ARMBuildAttrs::ABI_PCS_GOT_use, "Tag_ABI_PCS_GOT_use" },
+  { ARMBuildAttrs::ABI_PCS_wchar_t, "Tag_ABI_PCS_wchar_t" },
+  { ARMBuildAttrs::ABI_FP_rounding, "Tag_ABI_FP_rounding" },
+  { ARMBuildAttrs::ABI_FP_denormal, "Tag_ABI_FP_denormal" },
+  { ARMBuildAttrs::ABI_FP_exceptions, "Tag_ABI_FP_exceptions" },
+  { ARMBuildAttrs::ABI_FP_user_exceptions, "Tag_ABI_FP_user_exceptions" },
+  { ARMBuildAttrs::ABI_FP_number_model, "Tag_ABI_FP_number_model" },
+  { ARMBuildAttrs::ABI_align8_needed, "Tag_ABI_align8_needed" },
+  { ARMBuildAttrs::ABI_align8_preserved, "Tag_ABI_align8_preserved" },
+  { ARMBuildAttrs::ABI_enum_size, "Tag_ABI_enum_size" },
+  { ARMBuildAttrs::ABI_HardFP_use, "Tag_ABI_HardFP_use" },
+  { ARMBuildAttrs::ABI_VFP_args, "Tag_ABI_VFP_args" },
+  { ARMBuildAttrs::ABI_WMMX_args, "Tag_ABI_WMMX_args" },
+  { ARMBuildAttrs::ABI_optimization_goals, "Tag_ABI_optimization_goals" },
+  { ARMBuildAttrs::ABI_FP_optimization_goals, "Tag_ABI_FP_optimization_goals" },
+  { ARMBuildAttrs::compatibility, "Tag_compatibility" },
+  { ARMBuildAttrs::CPU_unaligned_access, "Tag_CPU_unaligned_access" },
+  { ARMBuildAttrs::FP_HP_extension, "Tag_FP_HP_extension" },
+  { ARMBuildAttrs::ABI_FP_16bit_format, "Tag_ABI_FP_16bit_format" },
+  { ARMBuildAttrs::MPextension_use, "Tag_MPextension_use" },
+  { ARMBuildAttrs::DIV_use, "Tag_DIV_use" },
+  { ARMBuildAttrs::nodefaults, "Tag_nodefaults" },
+  { ARMBuildAttrs::also_compatible_with, "Tag_also_compatible_with" },
+  { ARMBuildAttrs::T2EE_use, "Tag_T2EE_use" },
+  { ARMBuildAttrs::conformance, "Tag_conformance" },
+  { ARMBuildAttrs::Virtualization_use, "Tag_Virtualization_use" },
+
+  // Legacy Names
+  { ARMBuildAttrs::FP_arch, "Tag_VFP_arch" },
+  { ARMBuildAttrs::ABI_align8_needed, "Tag_ABI_align_needed" },
+  { ARMBuildAttrs::ABI_align8_preserved, "Tag_ABI_align_preserved" },
+  { ARMBuildAttrs::FP_HP_extension, "Tag_VFP_HP_extension" },
+};
+}
+
+namespace llvm {
+namespace ARMBuildAttrs {
+StringRef AttrTypeAsString(unsigned Attr, bool HasTagPrefix) {
+  return AttrTypeAsString(static_cast<AttrType>(Attr), HasTagPrefix);
+}
+
+StringRef AttrTypeAsString(AttrType Attr, bool HasTagPrefix) {
+  for (unsigned TI = 0, TE = sizeof(ARMAttributeTags) / sizeof(*ARMAttributeTags);
+       TI != TE; ++TI)
+    if (ARMAttributeTags[TI].Attr == Attr)
+      return ARMAttributeTags[TI].TagName + (HasTagPrefix ? 0 : 4);
+  return "";
+}
+
+int AttrTypeFromString(StringRef Tag) {
+  bool HasTagPrefix = Tag.startswith("Tag_");
+  for (unsigned TI = 0, TE = sizeof(ARMAttributeTags) / sizeof(*ARMAttributeTags);
+       TI != TE; ++TI)
+    if (StringRef(ARMAttributeTags[TI].TagName + (HasTagPrefix ? 0 : 4)) == Tag)
+      return ARMAttributeTags[TI].Attr;
+  return -1;
+}
+}
+}
+