1 files changed, 83 insertions, 0 deletions
diff --git a/debuggerd/libdebuggerd/arm/machine.cpp b/debuggerd/libdebuggerd/arm/machine.cpp
new file mode 100644
index 000000000..78c230615
--- /dev/null
+++ b/debuggerd/libdebuggerd/arm/machine.cpp
@@ -0,0 +1,83 @@
+/*
+ *
+ * Copyright 2006, 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 <errno.h>
+#include <stdint.h>
+#include <string.h>
+#include <sys/ptrace.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) {
+  pt_regs regs;
+  if (ptrace(PTRACE_GETREGS, backtrace->Tid(), 0, &regs)) {
+    ALOGE("cannot get registers: %s\n", strerror(errno));
+    return;
+  }
+
+  static const char reg_names[] = "r0r1r2r3r4r5r6r7r8r9slfpipsp";
+
+  for (int reg = 0; reg < 14; reg++) {
+    dump_memory(log, backtrace, regs.uregs[reg], "memory near %.2s:", &reg_names[reg * 2]);
+  }
+
+  dump_memory(log, backtrace, static_cast<uintptr_t>(regs.ARM_pc), "code around pc:");
+
+  if (regs.ARM_pc != regs.ARM_lr) {
+    dump_memory(log, backtrace, static_cast<uintptr_t>(regs.ARM_lr), "code around lr:");
+  }
+}
+
+void dump_registers(log_t* log, pid_t tid) {
+  pt_regs r;
+  if (ptrace(PTRACE_GETREGS, tid, 0, &r)) {
+    ALOGE("cannot get registers: %s\n", strerror(errno));
+    return;
+  }
+
+  _LOG(log, logtype::REGISTERS, "    r0 %08x  r1 %08x  r2 %08x  r3 %08x\n",
+       static_cast<uint32_t>(r.ARM_r0), static_cast<uint32_t>(r.ARM_r1),
+       static_cast<uint32_t>(r.ARM_r2), static_cast<uint32_t>(r.ARM_r3));
+  _LOG(log, logtype::REGISTERS, "    r4 %08x  r5 %08x  r6 %08x  r7 %08x\n",
+       static_cast<uint32_t>(r.ARM_r4), static_cast<uint32_t>(r.ARM_r5),
+       static_cast<uint32_t>(r.ARM_r6), static_cast<uint32_t>(r.ARM_r7));
+  _LOG(log, logtype::REGISTERS, "    r8 %08x  r9 %08x  sl %08x  fp %08x\n",
+       static_cast<uint32_t>(r.ARM_r8), static_cast<uint32_t>(r.ARM_r9),
+       static_cast<uint32_t>(r.ARM_r10), static_cast<uint32_t>(r.ARM_fp));
+  _LOG(log, logtype::REGISTERS, "    ip %08x  sp %08x  lr %08x  pc %08x  cpsr %08x\n",
+       static_cast<uint32_t>(r.ARM_ip), static_cast<uint32_t>(r.ARM_sp),
+       static_cast<uint32_t>(r.ARM_lr), static_cast<uint32_t>(r.ARM_pc),
+       static_cast<uint32_t>(r.ARM_cpsr));
+
+  user_vfp vfp_regs;
+  if (ptrace(PTRACE_GETVFPREGS, tid, 0, &vfp_regs)) {
+    ALOGE("cannot get FP registers: %s\n", strerror(errno));
+    return;
+  }
+
+  for (size_t i = 0; i < 32; i += 2) {
+    _LOG(log, logtype::FP_REGISTERS, "    d%-2d %016llx  d%-2d %016llx\n",
+         i, vfp_regs.fpregs[i], i+1, vfp_regs.fpregs[i+1]);
+  }
+  _LOG(log, logtype::FP_REGISTERS, "    scr %08lx\n", vfp_regs.fpscr);
+}