gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gdbsupport / common-inferior.cc

diff --git a/gdbsupport/common-inferior.cc b/gdbsupport/common-inferior.cc
index ed16e89a5205a4c58147cb81f1519e1f3d1e94eb..a67d1740a27d78f13c31b1b9658c96d5cdf7ca30 100644 (file)
--- a/gdbsupport/common-inferior.cc
+++ b/gdbsupport/common-inferior.cc
@@ -24,3 +24,102 @@
 /* See common-inferior.h.  */
 
 bool startup_with_shell = true;
+
+/* See common-inferior.h.  */
+
+std::string
+construct_inferior_arguments (gdb::array_view<char * const> argv)
+{
+  std::string result;
+
+  if (startup_with_shell)
+    {
+#ifdef __MINGW32__
+      /* This holds all the characters considered special to the
+        Windows shells.  */
+      static const char special[] = "\"!&*|[]{}<>?`~^=;, \t\n";
+      static const char quote = '"';
+#else
+      /* This holds all the characters considered special to the
+        typical Unix shells.  We include `^' because the SunOS
+        /bin/sh treats it as a synonym for `|'.  */
+      static const char special[] = "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
+      static const char quote = '\'';
+#endif
+      for (int i = 0; i < argv.size (); ++i)
+       {
+         if (i > 0)
+           result += ' ';
+
+         /* Need to handle empty arguments specially.  */
+         if (argv[i][0] == '\0')
+           {
+             result += quote;
+             result += quote;
+           }
+         else
+           {
+#ifdef __MINGW32__
+             bool quoted = false;
+
+             if (strpbrk (argv[i], special))
+               {
+                 quoted = true;
+                 result += quote;
+               }
+#endif
+             for (char *cp = argv[i]; *cp; ++cp)
+               {
+                 if (*cp == '\n')
+                   {
+                     /* A newline cannot be quoted with a backslash (it
+                        just disappears), only by putting it inside
+                        quotes.  */
+                     result += quote;
+                     result += '\n';
+                     result += quote;
+                   }
+                 else
+                   {
+#ifdef __MINGW32__
+                     if (*cp == quote)
+#else
+                     if (strchr (special, *cp) != NULL)
+#endif
+                       result += '\\';
+                     result += *cp;
+                   }
+               }
+#ifdef __MINGW32__
+             if (quoted)
+               result += quote;
+#endif
+           }
+       }
+    }
+  else
+    {
+      /* In this case we can't handle arguments that contain spaces,
+        tabs, or newlines -- see breakup_args().  */
+      for (char *arg : argv)
+       {
+         char *cp = strchr (arg, ' ');
+         if (cp == NULL)
+           cp = strchr (arg, '\t');
+         if (cp == NULL)
+           cp = strchr (arg, '\n');
+         if (cp != NULL)
+           error (_("can't handle command-line "
+                    "argument containing whitespace"));
+       }
+
+      for (int i = 0; i < argv.size (); ++i)
+       {
+         if (i > 0)
+           result += " ";
+         result += argv[i];
+       }
+    }
+
+  return result;
+}