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-rw-r--r--passes/cmds/select.cc22
1 files changed, 20 insertions, 2 deletions
diff --git a/passes/cmds/select.cc b/passes/cmds/select.cc
index 59f936b0..38d43f8d 100644
--- a/passes/cmds/select.cc
+++ b/passes/cmds/select.cc
@@ -595,6 +595,13 @@ static void select_stmt(RTLIL::Design *design, std::string arg)
select_op_diff(design, work_stack[work_stack.size()-2], work_stack[work_stack.size()-1]);
work_stack.pop_back();
} else
+ if (arg == "%D") {
+ if (work_stack.size() < 2)
+ log_cmd_error("Must have at least two elements on the stack for operator %%d.\n");
+ select_op_diff(design, work_stack[work_stack.size()-1], work_stack[work_stack.size()-2]);
+ work_stack[work_stack.size()-2] = work_stack[work_stack.size()-1];
+ work_stack.pop_back();
+ } else
if (arg == "%i") {
if (work_stack.size() < 2)
log_cmd_error("Must have at least two elements on the stack for operator %%i.\n");
@@ -606,14 +613,19 @@ static void select_stmt(RTLIL::Design *design, std::string arg)
log_cmd_error("Must have at least one element on the stack for operator %%s.\n");
select_op_submod(design, work_stack[work_stack.size()-1]);
} else
+ if (arg == "%c") {
+ if (work_stack.size() < 1)
+ log_cmd_error("Must have at least one element on the stack for operator %%c.\n");
+ work_stack.push_back(work_stack.back());
+ } else
if (arg == "%m") {
if (work_stack.size() < 1)
- log_cmd_error("Must have at least one element on the stack for operator %%s.\n");
+ log_cmd_error("Must have at least one element on the stack for operator %%m.\n");
select_op_fullmod(design, work_stack[work_stack.size()-1]);
} else
if (arg == "%a") {
if (work_stack.size() < 1)
- log_cmd_error("Must have at least one element on the stack for operator %%s.\n");
+ log_cmd_error("Must have at least one element on the stack for operator %%a.\n");
select_op_alias(design, work_stack[work_stack.size()-1]);
} else
if (arg == "%x" || (arg.size() > 2 && arg.substr(0, 2) == "%x" && (arg[2] == ':' || arg[2] == '*' || arg[2] == '.' || ('0' <= arg[2] && arg[2] <= '9')))) {
@@ -958,6 +970,12 @@ struct SelectPass : public Pass {
log(" %%d\n");
log(" pop the top set from the stack and subtract it from the new top\n");
log("\n");
+ log(" %%D\n");
+ log(" like %%d but swap the roles of two top sets on the stack\n");
+ log("\n");
+ log(" %%c\n");
+ log(" create a copy of the top set rom the stack and push it\n");
+ log("\n");
log(" %%x[<num1>|*][.<num2>][:<rule>[:<rule>..]]\n");
log(" expand top set <num1> num times according to the specified rules.\n");
log(" (i.e. select all cells connected to selected wires and select all\n");