1 files changed, 112 insertions, 0 deletions
diff --git a/debuggerd/arm64/machine.cpp b/debuggerd/arm64/machine.cpp
new file mode 100644
index 0000000..ec664bd
--- /dev/null
+++ b/debuggerd/arm64/machine.cpp
@@ -0,0 +1,112 @@
+/*
+ *
+ * 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.
+ */
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <sys/user.h>
+#include <sys/uio.h>
+#include <linux/elf.h>
+
+#include "../utility.h"
+#include "../machine.h"
+
+void dump_memory_and_code(log_t* log, pid_t tid) {
+    struct user_pt_regs regs;
+    struct iovec io;
+    io.iov_base = &regs;
+    io.iov_len = sizeof(regs);
+
+    if (ptrace(PTRACE_GETREGSET, tid, (void*)NT_PRSTATUS, &io) == -1) {
+        _LOG(log, logtype::ERROR, "%s: ptrace failed to get registers: %s\n",
+             __func__, strerror(errno));
+        return;
+    }
+
+    for (int reg = 0; reg < 31; reg++) {
+        uintptr_t addr = regs.regs[reg];
+
+        /*
+         * Don't bother if it looks like a small int or ~= null, or if
+         * it's in the kernel area.
+         */
+        if (addr < 4096 || addr >= (1UL<<63)) {
+            continue;
+        }
+
+        _LOG(log, logtype::MEMORY, "\nmemory near x%d:\n", reg);
+        dump_memory(log, tid, addr);
+    }
+
+    _LOG(log, logtype::MEMORY, "\ncode around pc:\n");
+    dump_memory(log, tid, (uintptr_t)regs.pc);
+
+    if (regs.pc != regs.sp) {
+        _LOG(log, logtype::MEMORY, "\ncode around sp:\n");
+        dump_memory(log, tid, (uintptr_t)regs.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) {
+    _LOG(log, logtype::ERROR, "ptrace error: %s\n", strerror(errno));
+    return;
+  }
+
+  for (int i = 0; i < 28; i += 4) {
+    _LOG(log, logtype::REGISTERS,
+         "    x%-2d  %016lx  x%-2d  %016lx  x%-2d  %016lx  x%-2d  %016lx\n",
+         i, (uint64_t)r.regs[i],
+         i+1, (uint64_t)r.regs[i+1],
+         i+2, (uint64_t)r.regs[i+2],
+         i+3, (uint64_t)r.regs[i+3]);
+  }
+
+  _LOG(log, logtype::REGISTERS, "    x28  %016lx  x29  %016lx  x30  %016lx\n",
+       (uint64_t)r.regs[28], (uint64_t)r.regs[29], (uint64_t)r.regs[30]);
+
+  _LOG(log, logtype::REGISTERS, "    sp   %016lx  pc   %016lx\n",
+       (uint64_t)r.sp, (uint64_t)r.pc);
+
+
+  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) {
+    _LOG(log, logtype::ERROR, "ptrace error: %s\n", strerror(errno));
+    return;
+  }
+
+  for (int i = 0; i < 32; i += 4) {
+    _LOG(log, logtype::REGISTERS, "    v%-2d  %016lx  v%-2d  %016lx  v%-2d  %016lx  v%-2d  %016lx\n",
+         i, (uint64_t)f.vregs[i],
+         i+1, (uint64_t)f.vregs[i+1],
+         i+2, (uint64_t)f.vregs[i+2],
+         i+3, (uint64_t)f.vregs[i+3]);
+  }
+}