riscv64: Add basic disassembler.

Add a disassembler that differentiates between 16-bit and
32-bit instructions and disassembles 32-bit LUI, AUIPC,
branches, loads, stores and integral arithmetic operations.

Test: m dump-oat  # and manually inspect output
Bug: 283082089
Change-Id: I0946aaf2bb99d5539efbcecabc111def2a512439

1 files changed, 3 insertions, 0 deletions

diff --git a/disassembler/Android.bp b/disassembler/Android.bp
index b7f758ffdc..511292d6fa 100644
--- a/disassembler/Android.bp
+++ b/disassembler/Android.bp
@@ -37,6 +37,9 @@ art_cc_defaults {
         arm64: {
             srcs: ["disassembler_arm64.cc"],
         },
+        riscv64: {
+            srcs: ["disassembler_riscv64.cc"],
+        },
         x86: {
             srcs: ["disassembler_x86.cc"],
         },