Added support for dump -append

diff --git a/backends/ilang/ilang_backend.cc b/backends/ilang/ilang_backend.cc
index 924e316bc1b8c75bc332807c2c01c60282c66fe1..c585d40c509bb37471ff4586be7095c6b44197f8 100644 (file)
--- a/backends/ilang/ilang_backend.cc
+++ b/backends/ilang/ilang_backend.cc
@@ -409,13 +409,16 @@ struct DumpPass : public Pass {
                log("        only dump the module headers if the entire module is selected\n");
                log("\n");
                log("    -outfile <filename>\n");
-               log("        Write to the specified file.\n");
+               log("        write to the specified file.\n");
+               log("\n");
+               log("    -append <filename>\n");
+               log("        like -outfile but append instead of overwrite\n");
                log("\n");
        }
        virtual void execute(std::vector<std::string> args, RTLIL::Design *design)
        {
                std::string filename;
-               bool flag_m = false, flag_n = false;
+               bool flag_m = false, flag_n = false, append = false;
 
                size_t argidx;
                for (argidx = 1; argidx < args.size(); argidx++)
@@ -423,6 +426,12 @@ struct DumpPass : public Pass {
                        std::string arg = args[argidx];
                        if (arg == "-outfile" && argidx+1 < args.size()) {
                                filename = args[++argidx];
+                               append = false;
+                               continue;
+                       }
+                       if (arg == "-append" && argidx+1 < args.size()) {
+                               filename = args[++argidx];
+                               append = true;
                                continue;
                        }
                        if (arg == "-m") {
@@ -442,7 +451,7 @@ struct DumpPass : public Pass {
                size_t buf_size;
 
                if (!filename.empty()) {
-                       f = fopen(filename.c_str(), "w");
+                       f = fopen(filename.c_str(), append ? "a" : "w");
                        if (f == NULL)
                                log_error("Can't open file `%s' for writing: %s\n", filename.c_str(), strerror(errno));
                } else {