ART: Refactor common ELF->InstructionSet code
Move code into instruction_set.h/cc.
Change-Id: I34d5c82791042c68629df84e0f4b9321231d51b9
diff --git a/runtime/arch/instruction_set.cc b/runtime/arch/instruction_set.cc
index 5ab461b..81ca010 100644
--- a/runtime/arch/instruction_set.cc
+++ b/runtime/arch/instruction_set.cc
@@ -16,6 +16,8 @@
#include "instruction_set.h"
+// Explicitly include our own elf.h to avoid Linux and other dependencies.
+#include "../elf.h"
#include "globals.h"
namespace art {
@@ -63,6 +65,29 @@
return kNone;
}
+InstructionSet GetInstructionSetFromELF(uint16_t e_machine, uint32_t e_flags) {
+ switch (e_machine) {
+ case EM_ARM:
+ return kArm;
+ case EM_AARCH64:
+ return kArm64;
+ case EM_386:
+ return kX86;
+ case EM_X86_64:
+ return kX86_64;
+ case EM_MIPS: {
+ if ((e_flags & EF_MIPS_ARCH) == EF_MIPS_ARCH_32R2 ||
+ (e_flags & EF_MIPS_ARCH) == EF_MIPS_ARCH_32R6) {
+ return kMips;
+ } else if ((e_flags & EF_MIPS_ARCH) == EF_MIPS_ARCH_64R6) {
+ return kMips64;
+ }
+ break;
+ }
+ }
+ return kNone;
+}
+
size_t GetInstructionSetAlignment(InstructionSet isa) {
switch (isa) {
case kArm:
diff --git a/runtime/arch/instruction_set.h b/runtime/arch/instruction_set.h
index 9135e58..9cfd2eb 100644
--- a/runtime/arch/instruction_set.h
+++ b/runtime/arch/instruction_set.h
@@ -80,6 +80,8 @@
// Note: Returns kNone when the string cannot be parsed to a known value.
InstructionSet GetInstructionSetFromString(const char* instruction_set);
+InstructionSet GetInstructionSetFromELF(uint16_t e_machine, uint32_t e_flags);
+
static inline size_t GetInstructionSetPointerSize(InstructionSet isa) {
switch (isa) {
case kArm: