/* GDB-specific functions for operating on agent expressions.
- Copyright (C) 1998-2015 Free Software Foundation, Inc.
+ Copyright (C) 1998-2017 Free Software Foundation, Inc.
This file is part of GDB.
#include "arch-utils.h"
#include "cli/cli-utils.h"
#include "linespec.h"
+#include "location.h"
#include "objfiles.h"
#include "valprint.h"
struct axs_value *value1,
struct axs_value *value2,
enum agent_op op,
- enum agent_op op_unsigned, int may_carry, char *name);
+ enum agent_op op_unsigned, int may_carry,
+ const char *name);
static void gen_logical_not (struct agent_expr *ax, struct axs_value *value,
struct type *result_type);
static void gen_complement (struct agent_expr *ax, struct axs_value *value);
static int gen_struct_ref_recursive (struct expression *exp,
struct agent_expr *ax,
struct axs_value *value,
- char *field, int offset,
+ const char *field, int offset,
struct type *type);
static void gen_struct_ref (struct expression *exp, struct agent_expr *ax,
struct axs_value *value,
- char *field,
- char *operator_name, char *operand_name);
+ const char *field,
+ const char *operator_name,
+ const char *operand_name);
static void gen_static_field (struct gdbarch *gdbarch,
struct agent_expr *ax, struct axs_value *value,
struct type *type, int fieldno);
int i, nbases = TYPE_N_BASECLASSES (type);
struct axs_value value;
- CHECK_TYPEDEF (type);
+ type = check_typedef (type);
for (i = TYPE_NFIELDS (type) - 1; i >= nbases; i--)
{
case axs_lvalue_memory:
{
- if (string_trace)
- ax_simple (ax, aop_dup);
-
/* Initialize the TYPE_LENGTH if it is a typedef. */
check_typedef (value->type);
- /* There's no point in trying to use a trace_quick bytecode
- here, since "trace_quick SIZE pop" is three bytes, whereas
- "const8 SIZE trace" is also three bytes, does the same
- thing, and the simplest code which generates that will also
- work correctly for objects with large sizes. */
- ax_const_l (ax, TYPE_LENGTH (value->type));
- ax_simple (ax, aop_trace);
-
if (string_trace)
{
- ax_simple (ax, aop_ref32);
+ gen_fetch (ax, value->type);
ax_const_l (ax, ax->trace_string);
ax_simple (ax, aop_tracenz);
}
+ else
+ {
+ /* There's no point in trying to use a trace_quick bytecode
+ here, since "trace_quick SIZE pop" is three bytes, whereas
+ "const8 SIZE trace" is also three bytes, does the same
+ thing, and the simplest code which generates that will also
+ work correctly for objects with large sizes. */
+ ax_const_l (ax, TYPE_LENGTH (value->type));
+ ax_simple (ax, aop_trace);
+ }
}
break;
{
case TYPE_CODE_PTR:
case TYPE_CODE_REF:
+ case TYPE_CODE_RVALUE_REF:
case TYPE_CODE_ENUM:
case TYPE_CODE_INT:
case TYPE_CODE_CHAR:
/* If we're converting to a narrower type, then we need to clear out
the upper bits. */
if (TYPE_LENGTH (to) < TYPE_LENGTH (from))
- gen_extend (ax, from);
+ gen_extend (ax, to);
/* If the two values have equal width, but different signednesses,
then we need to extend. */
static int
is_nontrivial_conversion (struct type *from, struct type *to)
{
- struct agent_expr *ax = new_agent_expr (NULL, 0);
+ agent_expr_up ax (new agent_expr (NULL, 0));
int nontrivial;
/* Actually generate the code, and see if anything came out. At the
floating point and the like, it may not be. Doing things this
way allows this function to be independent of the logic in
gen_conversion. */
- gen_conversion (ax, from, to);
+ gen_conversion (ax.get (), from, to);
nontrivial = ax->len > 0;
- free_agent_expr (ax);
return nontrivial;
}
{
case TYPE_CODE_PTR:
case TYPE_CODE_REF:
+ case TYPE_CODE_RVALUE_REF:
/* It's implementation-defined, and I'll bet this is what GCC
does. */
break;
gen_binop (struct agent_expr *ax, struct axs_value *value,
struct axs_value *value1, struct axs_value *value2,
enum agent_op op, enum agent_op op_unsigned,
- int may_carry, char *name)
+ int may_carry, const char *name)
{
/* We only handle INT op INT. */
if ((TYPE_CODE (value1->type) != TYPE_CODE_INT)
static int
gen_struct_ref_recursive (struct expression *exp, struct agent_expr *ax,
struct axs_value *value,
- char *field, int offset, struct type *type)
+ const char *field, int offset, struct type *type)
{
int i, rslt;
int nbases = TYPE_N_BASECLASSES (type);
- CHECK_TYPEDEF (type);
+ type = check_typedef (type);
for (i = TYPE_NFIELDS (type) - 1; i >= nbases; i--)
{
it operates on; we use them in error messages. */
static void
gen_struct_ref (struct expression *exp, struct agent_expr *ax,
- struct axs_value *value, char *field,
- char *operator_name, char *operand_name)
+ struct axs_value *value, const char *field,
+ const char *operator_name, const char *operand_name)
{
struct type *type;
int found;
else
{
const char *phys_name = TYPE_FIELD_STATIC_PHYSNAME (type, fieldno);
- struct symbol *sym = lookup_symbol (phys_name, 0, VAR_DOMAIN, 0);
+ struct symbol *sym = lookup_symbol (phys_name, 0, VAR_DOMAIN, 0).symbol;
if (sym)
{
const struct type *curtype, char *name)
{
const char *namespace_name = TYPE_TAG_NAME (curtype);
- struct symbol *sym;
+ struct block_symbol sym;
sym = cp_lookup_symbol_namespace (namespace_name, name,
block_for_pc (ax->scope),
VAR_DOMAIN);
- if (sym == NULL)
+ if (sym.symbol == NULL)
return 0;
- gen_var_ref (exp->gdbarch, ax, value, sym);
+ gen_var_ref (exp->gdbarch, ax, value, sym.symbol);
if (value->optimized_out)
error (_("`%s' has been optimized out, cannot use"),
- SYMBOL_PRINT_NAME (sym));
+ SYMBOL_PRINT_NAME (sym.symbol));
return 1;
}
gen_aggregate_elt_ref (struct expression *exp,
struct agent_expr *ax, struct axs_value *value,
struct type *type, char *field,
- char *operator_name, char *operand_name)
+ const char *operator_name,
+ const char *operand_name)
{
switch (TYPE_CODE (type))
{
func = block_linkage_function (b);
lang = language_def (SYMBOL_LANGUAGE (func));
- sym = lookup_language_this (lang, b);
+ sym = lookup_language_this (lang, b).symbol;
if (!sym)
error (_("no `%s' found"), lang->la_name_of_this);
variable's name, and no parsed expression; for instance, when the
name comes from a list of local variables of a function. */
-struct agent_expr *
+agent_expr_up
gen_trace_for_var (CORE_ADDR scope, struct gdbarch *gdbarch,
struct symbol *var, int trace_string)
{
- struct cleanup *old_chain = 0;
- struct agent_expr *ax = new_agent_expr (gdbarch, scope);
+ agent_expr_up ax (new agent_expr (gdbarch, scope));
struct axs_value value;
- old_chain = make_cleanup_free_agent_expr (ax);
-
ax->tracing = 1;
ax->trace_string = trace_string;
- gen_var_ref (gdbarch, ax, &value, var);
+ gen_var_ref (gdbarch, ax.get (), &value, var);
/* If there is no actual variable to trace, flag it by returning
an empty agent expression. */
if (value.optimized_out)
- {
- do_cleanups (old_chain);
- return NULL;
- }
+ return agent_expr_up ();
/* Make sure we record the final object, and get rid of it. */
- gen_traced_pop (gdbarch, ax, &value);
+ gen_traced_pop (gdbarch, ax.get (), &value);
/* Oh, and terminate. */
- ax_simple (ax, aop_end);
+ ax_simple (ax.get (), aop_end);
- /* We have successfully built the agent expr, so cancel the cleanup
- request. If we add more cleanups that we always want done, this
- will have to get more complicated. */
- discard_cleanups (old_chain);
return ax;
}
record the value of all memory touched by the expression. The
caller can then use the ax_reqs function to discover which
registers it relies upon. */
-struct agent_expr *
+
+agent_expr_up
gen_trace_for_expr (CORE_ADDR scope, struct expression *expr,
int trace_string)
{
- struct cleanup *old_chain = 0;
- struct agent_expr *ax = new_agent_expr (expr->gdbarch, scope);
+ agent_expr_up ax (new agent_expr (expr->gdbarch, scope));
union exp_element *pc;
struct axs_value value;
- old_chain = make_cleanup_free_agent_expr (ax);
-
pc = expr->elts;
ax->tracing = 1;
ax->trace_string = trace_string;
value.optimized_out = 0;
- gen_expr (expr, &pc, ax, &value);
+ gen_expr (expr, &pc, ax.get (), &value);
/* Make sure we record the final object, and get rid of it. */
- gen_traced_pop (expr->gdbarch, ax, &value);
+ gen_traced_pop (expr->gdbarch, ax.get (), &value);
/* Oh, and terminate. */
- ax_simple (ax, aop_end);
+ ax_simple (ax.get (), aop_end);
- /* We have successfully built the agent expr, so cancel the cleanup
- request. If we add more cleanups that we always want done, this
- will have to get more complicated. */
- discard_cleanups (old_chain);
return ax;
}
gen_trace_for_expr does. The generated bytecode sequence leaves
the result of expression evaluation on the top of the stack. */
-struct agent_expr *
+agent_expr_up
gen_eval_for_expr (CORE_ADDR scope, struct expression *expr)
{
- struct cleanup *old_chain = 0;
- struct agent_expr *ax = new_agent_expr (expr->gdbarch, scope);
+ agent_expr_up ax (new agent_expr (expr->gdbarch, scope));
union exp_element *pc;
struct axs_value value;
- old_chain = make_cleanup_free_agent_expr (ax);
-
pc = expr->elts;
ax->tracing = 0;
value.optimized_out = 0;
- gen_expr (expr, &pc, ax, &value);
+ gen_expr (expr, &pc, ax.get (), &value);
- require_rvalue (ax, &value);
+ require_rvalue (ax.get (), &value);
/* Oh, and terminate. */
- ax_simple (ax, aop_end);
+ ax_simple (ax.get (), aop_end);
- /* We have successfully built the agent expr, so cancel the cleanup
- request. If we add more cleanups that we always want done, this
- will have to get more complicated. */
- discard_cleanups (old_chain);
return ax;
}
-struct agent_expr *
+agent_expr_up
gen_trace_for_return_address (CORE_ADDR scope, struct gdbarch *gdbarch,
int trace_string)
{
- struct cleanup *old_chain = 0;
- struct agent_expr *ax = new_agent_expr (gdbarch, scope);
+ agent_expr_up ax (new agent_expr (gdbarch, scope));
struct axs_value value;
- old_chain = make_cleanup_free_agent_expr (ax);
-
ax->tracing = 1;
ax->trace_string = trace_string;
- gdbarch_gen_return_address (gdbarch, ax, &value, scope);
+ gdbarch_gen_return_address (gdbarch, ax.get (), &value, scope);
/* Make sure we record the final object, and get rid of it. */
- gen_traced_pop (gdbarch, ax, &value);
+ gen_traced_pop (gdbarch, ax.get (), &value);
/* Oh, and terminate. */
- ax_simple (ax, aop_end);
+ ax_simple (ax.get (), aop_end);
- /* We have successfully built the agent expr, so cancel the cleanup
- request. If we add more cleanups that we always want done, this
- will have to get more complicated. */
- discard_cleanups (old_chain);
return ax;
}
evaluate the arguments and pass everything to a special
bytecode. */
-struct agent_expr *
+agent_expr_up
gen_printf (CORE_ADDR scope, struct gdbarch *gdbarch,
CORE_ADDR function, LONGEST channel,
const char *format, int fmtlen,
struct format_piece *frags,
int nargs, struct expression **exprs)
{
- struct cleanup *old_chain = 0;
- struct agent_expr *ax = new_agent_expr (gdbarch, scope);
+ agent_expr_up ax (new agent_expr (gdbarch, scope));
union exp_element *pc;
struct axs_value value;
int tem;
- old_chain = make_cleanup_free_agent_expr (ax);
-
/* We're computing values, not doing side effects. */
ax->tracing = 0;
{
pc = exprs[tem]->elts;
value.optimized_out = 0;
- gen_expr (exprs[tem], &pc, ax, &value);
- require_rvalue (ax, &value);
+ gen_expr (exprs[tem], &pc, ax.get (), &value);
+ require_rvalue (ax.get (), &value);
}
/* Push function and channel. */
- ax_const_l (ax, channel);
- ax_const_l (ax, function);
+ ax_const_l (ax.get (), channel);
+ ax_const_l (ax.get (), function);
/* Issue the printf bytecode proper. */
- ax_simple (ax, aop_printf);
- ax_simple (ax, nargs);
- ax_string (ax, format, fmtlen);
+ ax_simple (ax.get (), aop_printf);
+ ax_raw_byte (ax.get (), nargs);
+ ax_string (ax.get (), format, fmtlen);
/* And terminate. */
- ax_simple (ax, aop_end);
-
- /* We have successfully built the agent expr, so cancel the cleanup
- request. If we add more cleanups that we always want done, this
- will have to get more complicated. */
- discard_cleanups (old_chain);
+ ax_simple (ax.get (), aop_end);
return ax;
}
static void
agent_eval_command_one (const char *exp, int eval, CORE_ADDR pc)
{
- struct cleanup *old_chain = 0;
- struct expression *expr;
- struct agent_expr *agent;
const char *arg;
int trace_string = 0;
exp = decode_agent_options (exp, &trace_string);
}
+ agent_expr_up agent;
+
arg = exp;
if (!eval && strcmp (arg, "$_ret") == 0)
{
agent = gen_trace_for_return_address (pc, get_current_arch (),
trace_string);
- old_chain = make_cleanup_free_agent_expr (agent);
}
else
{
- expr = parse_exp_1 (&arg, pc, block_for_pc (pc), 0);
- old_chain = make_cleanup (free_current_contents, &expr);
+ expression_up expr = parse_exp_1 (&arg, pc, block_for_pc (pc), 0);
+
if (eval)
{
gdb_assert (trace_string == 0);
- agent = gen_eval_for_expr (pc, expr);
+ agent = gen_eval_for_expr (pc, expr.get ());
}
else
- agent = gen_trace_for_expr (pc, expr, trace_string);
- make_cleanup_free_agent_expr (agent);
+ agent = gen_trace_for_expr (pc, expr.get (), trace_string);
}
- ax_reqs (agent);
- ax_print (gdb_stdout, agent);
+ ax_reqs (agent.get ());
+ ax_print (gdb_stdout, agent.get ());
/* It would be nice to call ax_reqs here to gather some general info
about the expression, and then print out the result. */
- do_cleanups (old_chain);
dont_repeat ();
}
struct linespec_result canonical;
int ix;
struct linespec_sals *iter;
- struct cleanup *old_chain;
exp = skip_spaces (exp);
- init_linespec_result (&canonical);
- decode_line_full (&exp, DECODE_LINE_FUNFIRSTLINE,
+
+ event_location_up location = new_linespec_location (&exp);
+ decode_line_full (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL,
(struct symtab *) NULL, 0, &canonical,
NULL, NULL);
- old_chain = make_cleanup_destroy_linespec_result (&canonical);
exp = skip_spaces (exp);
if (exp[0] == ',')
{
for (i = 0; i < iter->sals.nelts; i++)
agent_eval_command_one (exp, eval, iter->sals.sals[i].pc);
}
- do_cleanups (old_chain);
}
else
agent_eval_command_one (exp, eval, get_frame_pc (get_current_frame ()));
maint_agent_printf_command (char *exp, int from_tty)
{
struct cleanup *old_chain = 0;
- struct expression *expr;
struct expression *argvec[100];
- struct agent_expr *agent;
struct frame_info *fi = get_current_frame (); /* need current scope */
const char *cmdrest;
const char *format_start, *format_end;
const char *cmd1;
cmd1 = cmdrest;
- expr = parse_exp_1 (&cmd1, 0, (struct block *) 0, 1);
- argvec[nargs] = expr;
+ expression_up expr = parse_exp_1 (&cmd1, 0, (struct block *) 0, 1);
+ argvec[nargs] = expr.release ();
++nargs;
cmdrest = cmd1;
if (*cmdrest == ',')
}
- agent = gen_printf (get_frame_pc (fi), get_current_arch (), 0, 0,
- format_start, format_end - format_start,
- fpieces, nargs, argvec);
- make_cleanup_free_agent_expr (agent);
- ax_reqs (agent);
- ax_print (gdb_stdout, agent);
+ agent_expr_up agent = gen_printf (get_frame_pc (fi), get_current_arch (),
+ 0, 0,
+ format_start, format_end - format_start,
+ fpieces, nargs, argvec);
+ ax_reqs (agent.get ());
+ ax_print (gdb_stdout, agent.get ());
/* It would be nice to call ax_reqs here to gather some general info
about the expression, and then print out the result. */
projects / deliverable / binutils-gdb.git / blobdiff