+2013-02-14 Pedro Alves <pedro@codesourcery.com>
+ Hafiz Abid Qadeer <abidh@codesourcery.com>
+
+ * tracepoint.h (validate_trace_state_variable_name): Declare.
+ * tracepoint.c (validate_trace_state_variable_name): New.
+ (trace_variable_command): Parse the trace state variable's name
+ without using parse_expression. Do several validations.
+ * mi/mi-main.c (mi_cmd_trace_define_variable): Don't parse the
+ trace state variable's name with parse_expression. Validate it.
+
2013-02-14 Yao Qi <yao@codesourcery.com>
* infcmd.c (breakpoint_proceeded): Remove it.
mi_cmd_trace_define_variable (char *command, char **argv, int argc)
{
struct expression *expr;
- struct cleanup *back_to;
LONGEST initval = 0;
struct trace_state_variable *tsv;
char *name = 0;
if (argc != 1 && argc != 2)
error (_("Usage: -trace-define-variable VARIABLE [VALUE]"));
- expr = parse_expression (argv[0]);
- back_to = make_cleanup (xfree, expr);
-
- if (expr->nelts == 3 && expr->elts[0].opcode == OP_INTERNALVAR)
- {
- struct internalvar *intvar = expr->elts[1].internalvar;
-
- if (intvar)
- name = internalvar_name (intvar);
- }
+ name = argv[0];
+ if (*name++ != '$')
+ error (_("Name of trace variable should start with '$'"));
- if (!name || *name == '\0')
- error (_("Invalid name of trace variable"));
+ validate_trace_state_variable_name (name);
tsv = find_trace_state_variable (name);
if (!tsv)
initval = value_as_long (parse_and_eval (argv[1]));
tsv->initial_value = initval;
-
- do_cleanups (back_to);
}
void
+2013-02-14 Pedro Alves <pedro@codesourcery.com>
+ Hafiz Abid Qadeer <abidh@codesourcery.com>
+
+ * gdb.trace/tsv.exp: Adjust tests, and add a few more.
+
2013-02-12 Tom Tromey <tromey@redhat.com>
* gdb.cp/m-static.cc (gnu_obj_1::~gnu_obj_1): New destructor.
"Trace state variable \\\$tvar3 now has initial value 1234567000000." \
"Init trace state variable to a 64-bit value"
+gdb_test "tvariable $" \
+ "Must supply a non-empty variable name" \
+ "tvariable syntax error, not empty variable name"
+
gdb_test "tvariable main" \
- "Syntax must be \\\$NAME \\\[ = EXPR \\\]" \
+ "Name of trace variable should start with '\\\$'" \
"tvariable syntax error, bad name"
+gdb_test "tvariable \$\$" \
+ "Syntax must be \\\$NAME \\\[ = EXPR \\\]" \
+ "tvariable syntax error, bad name 2"
+
+gdb_test "tvariable \$123" \
+ "\\\$123 is not a valid trace state variable name" \
+ "tvariable syntax error, bad name 3"
+
gdb_test "tvariable \$tvar1 - 93" \
"Syntax must be \\\$NAME \\\[ = EXPR \\\]" \
"tvariable syntax error, not an assignment"
+gdb_test "tvariable \$tvar0 = 1 = 1" \
+ "Left operand of assignment is not an lvalue\." \
+ "tvariable creation fails with invalid expression"
+
gdb_test "info tvariables" \
"Name\[\t \]+Initial\[\t \]+Current.*
\\\$tvar1\[\t \]+0\[\t \]+<undefined>.*
warning (_("No trace variable named \"$%s\", not deleting"), name);
}
+/* Throws an error if NAME is not valid syntax for a trace state
+ variable's name. */
+
+void
+validate_trace_state_variable_name (const char *name)
+{
+ const char *p;
+
+ if (*name == '\0')
+ error (_("Must supply a non-empty variable name"));
+
+ /* All digits in the name is reserved for value history
+ references. */
+ for (p = name; isdigit (*p); p++)
+ ;
+ if (*p == '\0')
+ error (_("$%s is not a valid trace state variable name"), name);
+
+ for (p = name; isalnum (*p) || *p == '_'; p++)
+ ;
+ if (*p != '\0')
+ error (_("$%s is not a valid trace state variable name"), name);
+}
+
/* The 'tvariable' command collects a name and optional expression to
evaluate into an initial value. */
static void
trace_variable_command (char *args, int from_tty)
{
- struct expression *expr;
struct cleanup *old_chain;
- struct internalvar *intvar = NULL;
LONGEST initval = 0;
struct trace_state_variable *tsv;
+ char *name, *p;
if (!args || !*args)
- error_no_arg (_("trace state variable name"));
+ error_no_arg (_("Syntax is $NAME [ = EXPR ]"));
- /* All the possible valid arguments are expressions. */
- expr = parse_expression (args);
- old_chain = make_cleanup (free_current_contents, &expr);
+ /* Only allow two syntaxes; "$name" and "$name=value". */
+ p = skip_spaces (args);
- if (expr->nelts == 0)
- error (_("No expression?"));
+ if (*p++ != '$')
+ error (_("Name of trace variable should start with '$'"));
- /* Only allow two syntaxes; "$name" and "$name=value". */
- if (expr->elts[0].opcode == OP_INTERNALVAR)
- {
- intvar = expr->elts[1].internalvar;
- }
- else if (expr->elts[0].opcode == BINOP_ASSIGN
- && expr->elts[1].opcode == OP_INTERNALVAR)
- {
- intvar = expr->elts[2].internalvar;
- initval = value_as_long (evaluate_subexpression_type (expr, 4));
- }
- else
+ name = p;
+ while (isalnum (*p) || *p == '_')
+ p++;
+ name = savestring (name, p - name);
+ old_chain = make_cleanup (xfree, name);
+
+ p = skip_spaces (p);
+ if (*p != '=' && *p != '\0')
error (_("Syntax must be $NAME [ = EXPR ]"));
- if (!intvar)
- error (_("No name given"));
+ validate_trace_state_variable_name (name);
- if (strlen (internalvar_name (intvar)) <= 0)
- error (_("Must supply a non-empty variable name"));
+ if (*p == '=')
+ initval = value_as_long (parse_and_eval (++p));
/* If the variable already exists, just change its initial value. */
- tsv = find_trace_state_variable (internalvar_name (intvar));
+ tsv = find_trace_state_variable (name);
if (tsv)
{
if (tsv->initial_value != initval)
}
/* Create a new variable. */
- tsv = create_trace_state_variable (internalvar_name (intvar));
+ tsv = create_trace_state_variable (name);
tsv->initial_value = initval;
observer_notify_tsv_created (tsv);
char ***tdp_actions, char ***stepping_actions);
extern void validate_actionline (char **, struct breakpoint *);
+extern void validate_trace_state_variable_name (const char *name);
extern struct trace_state_variable *find_trace_state_variable (const char *name);
extern struct trace_state_variable *create_trace_state_variable (const char *name);
projects / external / binutils.git / commitdiff