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Filter: Improve handling of stack frames in filter bytecode

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When f_line is done, we have to pop the stack frame. The old code just
removed nominal number of args/vars. Change it to use stored ventry value
modified by number of returned values. This allows to allocate variables
on a stack frame during execution of f_lines instead of just at start.

But we need to know the number of returned values for a f_line. It is 1
for term, 0 for cmd. Store that to f_line during linearization.
This commit is contained in:
Ondrej Zajicek (work)
2022-03-09 02:32:29 +01:00
committed by Ondrej Zajicek
parent f31f4e6eef
commit a2527ee53d
9 changed files with 26 additions and 24 deletions
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4
nest/config.Y
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@@ -165,7 +165,7 @@ rtrid:
idval:
NUM { $$ = $1; }
| '(' term ')' { $$ = f_eval_int(f_linearize($2)); }
| '(' term ')' { $$ = f_eval_int(f_linearize($2, 1)); }
| IP4 { $$ = ip4_to_u32($1); }
| CF_SYM_KNOWN {
if ($1->class == (SYM_CONSTANT | T_INT) || $1->class == (SYM_CONSTANT | T_QUAD))
@@ -860,7 +860,7 @@ CF_CLI(DUMP FILTER ALL,,, [[Dump all filters in linearized form]])
{ filters_dump_all(); cli_msg(0, ""); } ;
CF_CLI(EVAL, term, <expr>, [[Evaluate an expression]])
{ cmd_eval(f_linearize($2)); } ;
{ cmd_eval(f_linearize($2, 1)); } ;
CF_CLI_HELP(ECHO, ..., [[Control echoing of log messages]])
CF_CLI(ECHO, echo_mask echo_size, (all | off | { debug|trace|info|remote|warning|error|auth [, ...] }) [<buffer-size>], [[Control echoing of log messages]]) {