Revert "Revert "Store resolved Strings for AOT code in .bss.""

Fixed oat_test to keep dex files alive. Fixed mips build.
Rewritten the .bss GC root visiting and added write barrier
to the artResolveStringFromCode().

Test: build aosp_mips-eng
Test: m ART_DEFAULT_GC_TYPE=SS test-art-target-host-gtest-oat_test
Test: Run ART test suite on host and Nexus 9.
Bug: 20323084
Bug: 30627598

This reverts commit 5f926055cb88089d8ca27243f35a9dfd89d981f0.

Change-Id: I07fa2278d82b8eb64964c9a4b66cb93726ccda6b

1 files changed, 7 insertions, 1 deletions

diff --git a/compiler/optimizing/code_generator_mips.h b/compiler/optimizing/code_generator_mips.h
index f943978b3b..0e8d8d40cf 100644
--- a/compiler/optimizing/code_generator_mips.h
+++ b/compiler/optimizing/code_generator_mips.h
@@ -435,6 +435,8 @@ class CodeGeneratorMIPS : public CodeGenerator {
   Literal* DeduplicateBootImageTypeLiteral(const DexFile& dex_file, uint32_t type_index);
   Literal* DeduplicateBootImageAddressLiteral(uint32_t address);
 
+  void EmitPcRelativeAddressPlaceholder(PcRelativePatchInfo* info, Register out, Register base);
+
  private:
   Register GetInvokeStaticOrDirectExtraParameter(HInvokeStaticOrDirect* invoke, Register temp);
 
@@ -455,6 +457,10 @@ class CodeGeneratorMIPS : public CodeGenerator {
                                           uint32_t offset_or_index,
                                           ArenaDeque<PcRelativePatchInfo>* patches);
 
+  template <LinkerPatch (*Factory)(size_t, const DexFile*, uint32_t, uint32_t)>
+  void EmitPcRelativeLinkerPatches(const ArenaDeque<PcRelativePatchInfo>& infos,
+                                   ArenaVector<LinkerPatch>* linker_patches);
+
   // Labels for each block that will be compiled.
   MipsLabel* block_labels_;
   MipsLabel frame_entry_label_;
@@ -473,7 +479,7 @@ class CodeGeneratorMIPS : public CodeGenerator {
   ArenaDeque<PcRelativePatchInfo> pc_relative_dex_cache_patches_;
   // Deduplication map for boot string literals for kBootImageLinkTimeAddress.
   BootStringToLiteralMap boot_image_string_patches_;
-  // PC-relative String patch info.
+  // PC-relative String patch info; type depends on configuration (app .bss or boot image PIC).
   ArenaDeque<PcRelativePatchInfo> pc_relative_string_patches_;
   // Deduplication map for boot type literals for kBootImageLinkTimeAddress.
   BootTypeToLiteralMap boot_image_type_patches_;