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sync code with last improvements from OpenBSD

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This commit is contained in:
purplerain 2023-08-29 01:05:15 +00:00
parent 12cd8aa4a2
commit 18b0c95b14
Signed by: purplerain
GPG Key ID: F42C07F07E2E35B7
4 changed files with 28 additions and 7 deletions
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6
regress/usr.sbin/btrace/Makefile
View File

@ -1,11 +1,11 @@
# $OpenBSD: Makefile,v 1.27 2023/08/13 09:49:47 mpi Exp $
# $OpenBSD: Makefile,v 1.28 2023/08/28 21:23:46 dv Exp $
BTRACE?= /usr/sbin/btrace
ALLOWDT!= sysctl -n kern.allowdt 2>/dev/null
# scripts that don't need /dev/dt
BT_LANG_SCRIPTS= arithm beginend boolean comments delete exit \
histempty if \
BT_LANG_SCRIPTS= arithm beginend beginend-argn boolean comments delete \
exit histempty if \
map mapclear mapempty mapsyntax mapzero map-unnamed \
maxoperand min+max+sum multismts nsecs+var \
precedence print read-map-after-clear staticv-empty \

8
regress/usr.sbin/btrace/beginend-argn.bt Normal file
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@ -0,0 +1,8 @@
// Test catching invalid use of argN in BEGIN and END contexts.
BEGIN {
print(arg0);
}
END {
print(arg0);
}

6
regress/usr.sbin/btrace/beginend-argn.ok Normal file
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@ -0,0 +1,6 @@
beginend-argn.bt:3:11: the arg0 builtin cannot be used with BEGIN or END probes:
print(arg0);
^
beginend-argn.bt:7:11: the arg0 builtin cannot be used with BEGIN or END probes:
print(arg0);
^

15
usr.sbin/btrace/bt_parse.y
View File

@ -1,4 +1,4 @@
/* $OpenBSD: bt_parse.y,v 1.50 2023/08/13 13:19:23 dv Exp $ */
/* $OpenBSD: bt_parse.y,v 1.51 2023/08/28 21:23:46 dv Exp $ */
/*
* Copyright (c) 2019-2021 Martin Pieuchot <mpi@openbsd.org>
@ -109,7 +109,8 @@ typedef struct {
static void yyerror(const char *, ...);
static int yylex(void);
static int pflag;
static int pflag = 0; /* probe parsing context flag */
static int beflag = 0; /* BEGIN/END parsing context flag */
%}
%token <v.i> ERROR ENDFILT
@ -137,7 +138,7 @@ grammar : /* empty */
| grammar error
;
rule : plist filter action { br_new($1, $2, $3); }
rule : plist filter action { br_new($1, $2, $3); beflag = 0; }
;
beginend: BEGIN | END ;
@ -147,7 +148,7 @@ plist : plist ',' probe { $$ = bp_append($1, $3); }
;
probe : { pflag = 1; } pname { $$ = $2; pflag = 0; }
| beginend { $$ = bp_new(NULL, NULL, NULL, $1); }
| { beflag = 1; } beginend { $$ = bp_new(NULL, NULL, NULL, $2); }
;
pname : STRING ':' STRING ':' STRING { $$ = bp_new($1, $3, $5, 0); }
@ -962,6 +963,12 @@ again:
yylval.v.string = kwp->word;
return STRING;
}
} else if (beflag) {
/* Interpret tokens in a BEGIN/END context. */
if (kwp->type >= B_AT_BI_ARG0 &&
kwp->type <= B_AT_BI_ARG9)
yyerror("the %s builtin cannot be used with "
"BEGIN or END probes", kwp->word);
}
yylval.v.i = kwp->type;
return kwp->token;