1 files changed, 101 insertions, 0 deletions
diff --git a/debuggerd/libdebuggerd/arm64/machine.cpp b/debuggerd/libdebuggerd/arm64/machine.cpp
new file mode 100644
index 000000000..e7bf79a8f
--- /dev/null
+++ b/debuggerd/libdebuggerd/arm64/machine.cpp
@@ -0,0 +1,101 @@
+/*
+ *
+ * Copyright 2014, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "DEBUG"
+
+#include <elf.h>
+#include <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <sys/ptrace.h>
+#include <sys/uio.h>
+
+#include <backtrace/Backtrace.h>
+#include <log/log.h>
+
+#include "machine.h"
+#include "utility.h"
+
+void dump_memory_and_code(log_t* log, Backtrace* backtrace) {
+  struct user_pt_regs regs;
+  struct iovec io;
+  io.iov_base = &regs;
+  io.iov_len = sizeof(regs);
+
+  if (ptrace(PTRACE_GETREGSET, backtrace->Tid(), reinterpret_cast<void*>(NT_PRSTATUS), &io) == -1) {
+    ALOGE("ptrace failed to get registers: %s", strerror(errno));
+    return;
+  }
+
+  for (int reg = 0; reg < 31; reg++) {
+    dump_memory(log, backtrace, regs.regs[reg], "memory near x%d:", reg);
+  }
+
+  dump_memory(log, backtrace, static_cast<uintptr_t>(regs.pc), "code around pc:");
+
+  if (regs.pc != regs.sp) {
+    dump_memory(log, backtrace, static_cast<uintptr_t>(regs.sp), "code around sp:");
+  }
+}
+
+void dump_registers(log_t* log, pid_t tid) {
+  struct user_pt_regs r;
+  struct iovec io;
+  io.iov_base = &r;
+  io.iov_len = sizeof(r);
+
+  if (ptrace(PTRACE_GETREGSET, tid, (void*) NT_PRSTATUS, (void*) &io) == -1) {
+    ALOGE("ptrace error: %s\n", strerror(errno));
+    return;
+  }
+
+  for (int i = 0; i < 28; i += 4) {
+    _LOG(log, logtype::REGISTERS,
+         "    x%-2d  %016llx  x%-2d  %016llx  x%-2d  %016llx  x%-2d  %016llx\n",
+         i, r.regs[i],
+         i+1, r.regs[i+1],
+         i+2, r.regs[i+2],
+         i+3, r.regs[i+3]);
+  }
+
+  _LOG(log, logtype::REGISTERS, "    x28  %016llx  x29  %016llx  x30  %016llx\n",
+       r.regs[28], r.regs[29], r.regs[30]);
+
+  _LOG(log, logtype::REGISTERS, "    sp   %016llx  pc   %016llx  pstate %016llx\n",
+       r.sp, r.pc, r.pstate);
+
+  struct user_fpsimd_state f;
+  io.iov_base = &f;
+  io.iov_len = sizeof(f);
+
+  if (ptrace(PTRACE_GETREGSET, tid, (void*) NT_PRFPREG, (void*) &io) == -1) {
+    ALOGE("ptrace error: %s\n", strerror(errno));
+    return;
+  }
+
+  for (int i = 0; i < 32; i += 2) {
+    _LOG(log, logtype::FP_REGISTERS,
+         "    v%-2d  %016" PRIx64 "%016" PRIx64 "  v%-2d  %016" PRIx64 "%016" PRIx64 "\n",
+         i,
+         static_cast<uint64_t>(f.vregs[i] >> 64),
+         static_cast<uint64_t>(f.vregs[i]),
+         i+1,
+         static_cast<uint64_t>(f.vregs[i+1] >> 64),
+         static_cast<uint64_t>(f.vregs[i+1]));
+  }
+  _LOG(log, logtype::FP_REGISTERS, "    fpsr %08x  fpcr %08x\n", f.fpsr, f.fpcr);
+}