Added shell escape to command language

diff --git a/kernel/register.cc b/kernel/register.cc
index 0b0fb9f9c8109629e9eeb606cd556ac0ed4c5b3d..5c9b40cd1772a17dae67fb1cdc99f159f355808b 100644 (file)
--- a/kernel/register.cc
+++ b/kernel/register.cc
@@ -21,6 +21,7 @@
 #include "log.h"
 #include <assert.h>
 #include <string.h>
+#include <stdlib.h>
 
 using namespace REGISTER_INTERN;
 #define MAX_REG_COUNT 1000
@@ -132,6 +133,18 @@ void Pass::call(RTLIL::Design *design, std::string command)
 {
        std::vector<std::string> args;
        char *s = strdup(command.c_str()), *saveptr;
+       s += strspn(s, " \t\r\n");
+       if (*s == 0 || *s == '#')
+               return;
+       if (*s == '!') {
+               for (s++; *s == ' ' || *s == '\t'; s++) { }
+               char *p = s + strlen(s) - 1;
+               while (p >= s && (*p == '\r' || *p == '\n'))
+                       *(p--) = 0;
+               log_header("Shell command: %s\n", s);
+               system(s);
+               return;
+       }
        for (char *p = strtok_r(s, " \t\r\n", &saveptr); p; p = strtok_r(NULL, " \t\r\n", &saveptr)) {
                std::string str = p;
                int strsz = str.size();