Added debug printk support

arch/alpha/ev5.hh:
    Added max address PAL code can be at
arch/alpha/vtophys.cc:
    Check max address pal can be at so we don't do the wrong conversion
    if gdb asks for an unaligned access.

--HG--
extra : convert_revision : b44f6a8fcd8582337a7d4033f28137c7e718a6a8

1 files changed, 264 insertions, 0 deletions

diff --git a/kern/linux/printk.cc b/kern/linux/printk.cc
new file mode 100644
index 000000000..5aaa7abe2
--- /dev/null
+++ b/kern/linux/printk.cc
@@ -0,0 +1,264 @@
+/*
+ * Copyright (c) 2003 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+#include <algorithm>
+
+#include "base/cprintf.hh"
+#include "base/trace.hh"
+#include "sim/host.hh"
+#include "targetarch/arguments.hh"
+#include "targetarch/vtophys.hh"
+
+using namespace std;
+
+
+void
+Printk(AlphaArguments args)
+{
+    char *p = (char *)args++;
+
+    ios::fmtflags saved_flags = DebugOut().flags();
+    char old_fill = DebugOut().fill();
+    int old_precision = DebugOut().precision();
+
+    while (*p) {
+        switch (*p) {
+          case '%': {
+              bool more = true;
+              bool islong = false;
+              bool leftjustify = false;
+              bool format = false;
+              bool zero = false;
+              int width = 0;
+              while (more && *++p) {
+                  switch (*p) {
+                    case 'l':
+                    case 'L':
+                      islong = true;
+                      break;
+                    case '-':
+                      leftjustify = true;
+                      break;
+                    case '#':
+                      format = true;
+                      break;
+                    case '0':
+                      if (width)
+                          width *= 10;
+                      else
+                          zero = true;
+                      break;
+                    default:
+                      if (*p >= '1' && *p <= '9')
+                          width = 10 * width + *p - '0';
+                      else
+                          more = false;
+                      break;
+                  }
+              }
+
+              bool hexnum = false;
+              bool octal = false;
+              bool sign = false;
+              switch (*p) {
+                case 'X':
+                case 'x':
+                  hexnum = true;
+                  break;
+                case 'O':
+                case 'o':
+                  octal = true;
+                  break;
+                case 'D':
+                case 'd':
+                  sign = true;
+                  break;
+                case 'P':
+                  format = true;
+                case 'p':
+                  hexnum = true;
+                  break;
+              }
+
+              switch (*p) {
+                case 'D':
+                case 'd':
+                case 'U':
+                case 'u':
+                case 'X':
+                case 'x':
+                case 'O':
+                case 'o':
+                case 'P':
+                case 'p': {
+                  if (hexnum)
+                      DebugOut() << hex;
+
+                  if (octal)
+                      DebugOut() << oct;
+
+                  if (format) {
+                      if (!zero)
+                          DebugOut().setf(ios::showbase);
+                      else {
+                          if (hexnum) {
+                              DebugOut() << "0x";
+                              width -= 2;
+                          } else if (octal) {
+                              DebugOut() << "0";
+                              width -= 1;
+                          }
+                      }
+                  }
+
+                  if (zero)
+                      DebugOut().fill('0');
+
+                  if (width > 0)
+                      DebugOut().width(width);
+
+                  if (leftjustify && !zero)
+                      DebugOut().setf(ios::left);
+
+                  if (sign) {
+                      if (islong)
+                          DebugOut() << (int64_t)args;
+                      else
+                          DebugOut() << (int32_t)args;
+                  } else {
+                      if (islong)
+                          DebugOut() << (uint64_t)args;
+                      else
+                          DebugOut() << (uint32_t)args;
+                  }
+
+                  if (zero)
+                      DebugOut().fill(' ');
+
+                  if (width > 0)
+                      DebugOut().width(0);
+
+                  DebugOut() << dec;
+
+                  ++args;
+                }
+                  break;
+
+                case 's': {
+                    char *s = (char *)args;
+                    if (!s)
+                        s = "<NULL>";
+
+                    if (width > 0)
+                        DebugOut().width(width);
+                    if (leftjustify)
+                        DebugOut().setf(ios::left);
+
+                    DebugOut() << s;
+                    ++args;
+                }
+                  break;
+                case 'C':
+                case 'c': {
+                    uint64_t mask = (*p == 'C') ? 0xffL : 0x7fL;
+                    uint64_t num;
+                    int width;
+
+                    if (islong) {
+                        num = (uint64_t)args;
+                        width = sizeof(uint64_t);
+                    } else {
+                        num = (uint32_t)args;
+                        width = sizeof(uint32_t);
+                    }
+
+                    while (width-- > 0) {
+                        char c = (char)(num & mask);
+                        if (c)
+                            DebugOut() << c;
+                        num >>= 8;
+                    }
+
+                    ++args;
+                }
+                  break;
+                case 'b': {
+                  uint64_t n = (uint64_t)args++;
+                  char *s = (char *)args++;
+                  DebugOut() << s << ": " << n;
+                }
+                  break;
+                case 'n':
+                case 'N': {
+                    args += 2;
+#if 0
+                    uint64_t n = (uint64_t)args++;
+                    struct reg_values *rv = (struct reg_values *)args++;
+#endif
+                }
+                  break;
+                case 'r':
+                case 'R': {
+                    args += 2;
+#if 0
+                    uint64_t n = (uint64_t)args++;
+                    struct reg_desc *rd = (struct reg_desc *)args++;
+#endif
+                }
+                  break;
+                case '%':
+                  DebugOut() << '%';
+                  break;
+              }
+              ++p;
+          }
+            break;
+          case '\n':
+            DebugOut() << endl;
+            ++p;
+            break;
+          case '\r':
+            ++p;
+            if (*p != '\n')
+                DebugOut() << endl;
+            break;
+
+          default: {
+              size_t len = strcspn(p, "%\n\r\0");
+              DebugOut().write(p, len);
+              p += len;
+          }
+        }
+    }
+
+    DebugOut().flags(saved_flags);
+    DebugOut().fill(old_fill);
+    DebugOut().precision(old_precision);
+}
+