-/* GDB-specific functions for operating on agent expressions
- Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+/* GDB-specific functions for operating on agent expressions.
+
+ Copyright (C) 1998, 1999, 2000, 2001, 2003, 2007, 2008
+ Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "symtab.h"
#include "ax.h"
#include "ax-gdb.h"
#include "gdb_string.h"
+#include "block.h"
+#include "regcache.h"
/* To make sense of this file, you should read doc/agentexpr.texi.
Then look at the types and enums in ax-gdb.h. For the code itself,
static void gen_expr (union exp_element **pc,
struct agent_expr *ax, struct axs_value *value);
-static void print_axs_value (struct ui_file *f, struct axs_value * value);
static void agent_command (char *exp, int from_tty);
\f
case axs_lvalue_memory:
{
- int length = TYPE_LENGTH (value->type);
+ int length = TYPE_LENGTH (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
In any case, it's a bug the user shouldn't see. */
default:
internal_error (__FILE__, __LINE__,
- "gen_fetch: strange size");
+ _("gen_fetch: strange size"));
}
gen_sign_extend (ax, type);
something we should be (this code's fault). In any case,
it's a bug the user shouldn't see. */
internal_error (__FILE__, __LINE__,
- "gen_fetch: bad type code");
+ _("gen_fetch: bad type code"));
}
}
int frame_reg;
LONGEST frame_offset;
- TARGET_VIRTUAL_FRAME_POINTER (ax->scope, &frame_reg, &frame_offset);
+ gdbarch_virtual_frame_pointer (current_gdbarch,
+ ax->scope, &frame_reg, &frame_offset);
ax_reg (ax, frame_reg);
gen_offset (ax, frame_offset);
}
int frame_reg;
LONGEST frame_offset;
- TARGET_VIRTUAL_FRAME_POINTER (ax->scope, &frame_reg, &frame_offset);
+ gdbarch_virtual_frame_pointer (current_gdbarch,
+ ax->scope, &frame_reg, &frame_offset);
ax_reg (ax, frame_reg);
gen_offset (ax, frame_offset);
}
case LOC_CONST_BYTES:
internal_error (__FILE__, __LINE__,
- "gen_var_ref: LOC_CONST_BYTES symbols are not supported");
+ _("gen_var_ref: LOC_CONST_BYTES symbols are not supported"));
/* Variable at a fixed location in memory. Easy. */
case LOC_STATIC:
break;
case LOC_LOCAL: /* var lives in locals area of frame */
- case LOC_LOCAL_ARG:
gen_frame_locals_address (ax);
gen_sym_offset (ax, var);
value->kind = axs_lvalue_memory;
break;
- case LOC_BASEREG: /* relative to some base register */
- case LOC_BASEREG_ARG:
- ax_reg (ax, SYMBOL_BASEREG (var));
- gen_sym_offset (ax, var);
- value->kind = axs_lvalue_memory;
- break;
-
case LOC_TYPEDEF:
- error ("Cannot compute value of typedef `%s'.",
- SYMBOL_SOURCE_NAME (var));
+ error (_("Cannot compute value of typedef `%s'."),
+ SYMBOL_PRINT_NAME (var));
break;
case LOC_BLOCK:
break;
case LOC_REGISTER:
- case LOC_REGPARM:
/* Don't generate any code at all; in the process of treating
this as an lvalue or rvalue, the caller will generate the
right code. */
break;
/* A lot like LOC_REF_ARG, but the pointer lives directly in a
- register, not on the stack. Simpler than LOC_REGISTER and
- LOC_REGPARM, because it's just like any other case where the
- thing has a real address. */
+ register, not on the stack. Simpler than LOC_REGISTER
+ because it's just like any other case where the thing
+ has a real address. */
case LOC_REGPARM_ADDR:
ax_reg (ax, SYMBOL_VALUE (var));
value->kind = axs_lvalue_memory;
case LOC_UNRESOLVED:
{
struct minimal_symbol *msym
- = lookup_minimal_symbol (SYMBOL_NAME (var), NULL, NULL);
+ = lookup_minimal_symbol (DEPRECATED_SYMBOL_NAME (var), NULL, NULL);
if (!msym)
- error ("Couldn't resolve symbol `%s'.", SYMBOL_SOURCE_NAME (var));
+ error (_("Couldn't resolve symbol `%s'."), SYMBOL_PRINT_NAME (var));
/* Push the address of the variable. */
ax_const_l (ax, SYMBOL_VALUE_ADDRESS (msym));
}
break;
+ case LOC_COMPUTED:
+ /* FIXME: cagney/2004-01-26: It should be possible to
+ unconditionally call the SYMBOL_OPS method when available.
+ Unfortunately DWARF 2 stores the frame-base (instead of the
+ function) location in a function's symbol. Oops! For the
+ moment enable this when/where applicable. */
+ SYMBOL_OPS (var)->tracepoint_var_ref (var, ax, value);
+ break;
+
case LOC_OPTIMIZED_OUT:
- error ("The variable `%s' has been optimized out.",
- SYMBOL_SOURCE_NAME (var));
+ error (_("The variable `%s' has been optimized out."),
+ SYMBOL_PRINT_NAME (var));
break;
default:
- error ("Cannot find value of botched symbol `%s'.",
- SYMBOL_SOURCE_NAME (var));
+ error (_("Cannot find value of botched symbol `%s'."),
+ SYMBOL_PRINT_NAME (var));
break;
}
}
{
ax_const_l (ax, k);
value->kind = axs_rvalue;
- value->type = type;
+ value->type = check_typedef (type);
}
\f
ax_simple (ax, aop_swap);
}
- value1->type = value2->type = target;
+ value1->type = value2->type = check_typedef (target);
}
}
case TYPE_CODE_STRUCT:
case TYPE_CODE_UNION:
case TYPE_CODE_FUNC:
- error ("Illegal type cast: intended type must be scalar.");
+ error (_("Invalid type cast: intended type must be scalar."));
case TYPE_CODE_ENUM:
/* We don't have to worry about the size of the value, because
all our integral values are fully sign-extended, and when
casting pointers we can do anything we like. Is there any
- way for us to actually know what GCC actually does with a
- cast like this? */
- value->type = type;
+ way for us to know what GCC actually does with a cast like
+ this? */
break;
case TYPE_CODE_INT:
break;
default:
- error ("Casts to requested type are not yet implemented.");
+ error (_("Casts to requested type are not yet implemented."));
}
value->type = type;
}
else
- error ("Illegal combination of types in %s.", name);
+ error (_("Invalid combination of types in %s."), name);
value->kind = axs_rvalue;
}
value->type = builtin_type_long; /* FIXME --- should be ptrdiff_t */
}
else
- error ("\
+ error (_("\
First argument of `-' is a pointer, but second argument is neither\n\
-an integer nor a pointer of the same type.");
+an integer nor a pointer of the same type."));
}
/* Must be number + number. */
}
else
- error ("Illegal combination of types in subtraction.");
+ error (_("Invalid combination of types in subtraction."));
value->kind = axs_rvalue;
}
/* We only handle INT op INT. */
if ((TYPE_CODE (value1->type) != TYPE_CODE_INT)
|| (TYPE_CODE (value2->type) != TYPE_CODE_INT))
- error ("Illegal combination of types in %s.", name);
+ error (_("Invalid combination of types in %s."), name);
ax_simple (ax,
TYPE_UNSIGNED (value1->type) ? op_unsigned : op);
{
if (TYPE_CODE (value->type) != TYPE_CODE_INT
&& TYPE_CODE (value->type) != TYPE_CODE_PTR)
- error ("Illegal type of operand to `!'.");
+ error (_("Invalid type of operand to `!'."));
gen_usual_unary (ax, value);
ax_simple (ax, aop_log_not);
gen_complement (struct agent_expr *ax, struct axs_value *value)
{
if (TYPE_CODE (value->type) != TYPE_CODE_INT)
- error ("Illegal type of operand to `~'.");
+ error (_("Invalid type of operand to `~'."));
gen_usual_unary (ax, value);
gen_integral_promotions (ax, value);
this, and we don't know what error message to generate. */
if (TYPE_CODE (value->type) != TYPE_CODE_PTR)
internal_error (__FILE__, __LINE__,
- "gen_deref: expected a pointer");
+ _("gen_deref: expected a pointer"));
/* We've got an rvalue now, which is a pointer. We want to yield an
lvalue, whose address is exactly that pointer. So we don't
switch (value->kind)
{
case axs_rvalue:
- error ("Operand of `&' is an rvalue, which has no address.");
+ error (_("Operand of `&' is an rvalue, which has no address."));
case axs_lvalue_register:
- error ("Operand of `&' is in a register, and has no address.");
+ error (_("Operand of `&' is in a register, and has no address."));
case axs_lvalue_memory:
value->kind = axs_rvalue;
/* Make sure this isn't C++. */
if (TYPE_N_BASECLASSES (type) != 0)
internal_error (__FILE__, __LINE__,
- "find_field: derived classes supported");
+ _("find_field: derived classes supported"));
for (i = 0; i < TYPE_NFIELDS (type); i++)
{
char *this_name = TYPE_FIELD_NAME (type, i);
- if (this_name && STREQ (name, this_name))
- return i;
+ if (this_name)
+ {
+ if (strcmp (name, this_name) == 0)
+ return i;
- if (this_name[0] == '\0')
- internal_error (__FILE__, __LINE__,
- "find_field: anonymous unions not supported");
+ if (this_name[0] == '\0')
+ internal_error (__FILE__, __LINE__,
+ _("find_field: anonymous unions not supported"));
+ }
}
- error ("Couldn't find member named `%s' in struct/union `%s'",
+ error (_("Couldn't find member named `%s' in struct/union `%s'"),
name, TYPE_TAG_NAME (type));
return 0;
/* Can we fetch the number of bits requested at all? */
if ((end - start) > ((1 << num_ops) * 8))
internal_error (__FILE__, __LINE__,
- "gen_bitfield_ref: bitfield too wide");
+ _("gen_bitfield_ref: bitfield too wide"));
/* Note that we know here that we only need to try each opcode once.
That may not be true on machines with weird byte sizes. */
the sign/zero extension will wipe them out.
- If we're in the interior of the word, then there is no garbage
on either end, because the ref operators zero-extend. */
- if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
+ if (gdbarch_byte_order (current_gdbarch) == BFD_ENDIAN_BIG)
gen_left_shift (ax, end - (offset + op_size));
else
gen_left_shift (ax, offset - start);
/* This must yield a structure or a union. */
if (TYPE_CODE (type) != TYPE_CODE_STRUCT
&& TYPE_CODE (type) != TYPE_CODE_UNION)
- error ("The left operand of `%s' is not a %s.",
+ error (_("The left operand of `%s' is not a %s."),
operator_name, operand_name);
/* And it must be in memory; we don't deal with structure rvalues,
or structures living in registers. */
if (value->kind != axs_lvalue_memory)
- error ("Structure does not live in memory.");
+ error (_("Structure does not live in memory."));
i = find_field (type, field);
here. */
gen_expr (pc, ax, &value1);
if (value1.kind != axs_lvalue_memory)
- error ("Left operand of `@' must be an object in memory.");
+ error (_("Left operand of `@' must be an object in memory."));
/* Evaluate the length; it had better be a constant. */
{
int length;
if (!v)
- error ("Right operand of `@' must be a constant, in agent expressions.");
- if (TYPE_CODE (v->type) != TYPE_CODE_INT)
- error ("Right operand of `@' must be an integer.");
+ error (_("Right operand of `@' must be a constant, in agent expressions."));
+ if (TYPE_CODE (value_type (v)) != TYPE_CODE_INT)
+ error (_("Right operand of `@' must be an integer."));
length = value_as_long (v);
if (length <= 0)
- error ("Right operand of `@' must be positive.");
+ error (_("Right operand of `@' must be positive."));
/* The top of the stack is already the address of the object, so
all we need to do is frob the type of the lvalue. */
/* Generating bytecode from GDB expressions: general recursive thingy */
+/* XXX: i18n */
/* A gen_expr function written by a Gen-X'er guy.
Append code for the subexpression of EXPR starting at *POS_P to AX. */
static void
{
ax_const_l (ax, value_as_long (v));
value->kind = axs_rvalue;
- value->type = check_typedef (VALUE_TYPE (v));
+ value->type = check_typedef (value_type (v));
return;
}
}
case BINOP_SUBSCRIPT:
gen_add (ax, value, &value1, &value2, "array subscripting");
if (TYPE_CODE (value->type) != TYPE_CODE_PTR)
- error ("Illegal combination of types in array subscripting.");
+ error (_("Invalid combination of types in array subscripting."));
gen_deref (ax, value);
break;
case BINOP_BITWISE_AND:
/* We should only list operators in the outer case statement
that we actually handle in the inner case statement. */
internal_error (__FILE__, __LINE__,
- "gen_expr: op case sets don't match");
+ _("gen_expr: op case sets don't match"));
}
break;
case OP_REGISTER:
{
- int reg = (int) (*pc)[1].longconst;
- (*pc) += 3;
+ const char *name = &(*pc)[2].string;
+ int reg;
+ (*pc) += 4 + BYTES_TO_EXP_ELEM ((*pc)[1].longconst + 1);
+ reg = frame_map_name_to_regnum (deprecated_safe_get_selected_frame (),
+ name, strlen (name));
+ if (reg == -1)
+ internal_error (__FILE__, __LINE__,
+ _("Register $%s not available"), name);
+ if (reg >= gdbarch_num_regs (current_gdbarch))
+ error (_("'%s' is a pseudo-register; "
+ "GDB cannot yet trace pseudoregister contents."),
+ name);
value->kind = axs_lvalue_register;
value->u.reg = reg;
- value->type = REGISTER_VIRTUAL_TYPE (reg);
+ value->type = register_type (current_gdbarch, reg);
}
break;
case OP_INTERNALVAR:
- error ("GDB agent expressions cannot use convenience variables.");
+ error (_("GDB agent expressions cannot use convenience variables."));
/* Weirdo operator: see comments for gen_repeat for details. */
case BINOP_REPEAT:
if (value->kind != axs_rvalue)
/* This would be weird. */
internal_error (__FILE__, __LINE__,
- "gen_expr: OP_MEMVAL operand isn't an rvalue???");
+ _("gen_expr: OP_MEMVAL operand isn't an rvalue???"));
value->type = type;
value->kind = axs_lvalue_memory;
}
break;
+ case UNOP_PLUS:
+ (*pc)++;
+ /* + FOO is equivalent to 0 + FOO, which can be optimized. */
+ gen_expr (pc, ax, value);
+ gen_usual_unary (ax, value);
+ break;
+
case UNOP_NEG:
(*pc)++;
/* -FOO is equivalent to 0 - FOO. */
gen_expr (pc, ax, value);
gen_usual_unary (ax, value);
if (TYPE_CODE (value->type) != TYPE_CODE_PTR)
- error ("Argument of unary `*' is not a pointer.");
+ error (_("Argument of unary `*' is not a pointer."));
gen_deref (ax, value);
break;
/* If this `if' chain doesn't handle it, then the case list
shouldn't mention it, and we shouldn't be here. */
internal_error (__FILE__, __LINE__,
- "gen_expr: unhandled struct case");
+ _("gen_expr: unhandled struct case"));
}
break;
case OP_TYPE:
- error ("Attempt to use a type name as an expression.");
+ error (_("Attempt to use a type name as an expression."));
default:
- error ("Unsupported operator in expression.");
+ error (_("Unsupported operator in expression."));
}
}
\f
/* Generating bytecode from GDB expressions: driver */
-/* Given a GDB expression EXPR, produce a string of agent bytecode
- which computes its value. Return the agent expression, and set
- *VALUE to describe its type, and whether it's an lvalue or rvalue. */
-struct agent_expr *
-expr_to_agent (struct expression *expr, struct axs_value *value)
-{
- struct cleanup *old_chain = 0;
- struct agent_expr *ax = new_agent_expr (0);
- union exp_element *pc;
-
- old_chain = make_cleanup_free_agent_expr (ax);
-
- pc = expr->elts;
- trace_kludge = 0;
- gen_expr (&pc, ax, value);
-
- /* 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;
-}
-
-
-#if 0 /* not used */
-/* Given a GDB expression EXPR denoting an lvalue in memory, produce a
- string of agent bytecode which will leave its address and size on
- the top of stack. Return the agent expression.
-
- Not sure this function is useful at all. */
-struct agent_expr *
-expr_to_address_and_size (struct expression *expr)
-{
- struct axs_value value;
- struct agent_expr *ax = expr_to_agent (expr, &value);
-
- /* Complain if the result is not a memory lvalue. */
- if (value.kind != axs_lvalue_memory)
- {
- free_agent_expr (ax);
- error ("Expression does not denote an object in memory.");
- }
-
- /* Push the object's size on the stack. */
- ax_const_l (ax, TYPE_LENGTH (value.type));
-
- return ax;
-}
-#endif
-
/* Given a GDB expression EXPR, return bytecode to trace its value.
The result will use the `trace' and `trace_quick' bytecodes to
record the value of all memory touched by the expression. The
discard_cleanups (old_chain);
return ax;
}
-\f
-
-
-/* The "agent" command, for testing: compile and disassemble an expression. */
-
-static void
-print_axs_value (struct ui_file *f, struct axs_value *value)
-{
- switch (value->kind)
- {
- case axs_rvalue:
- fputs_filtered ("rvalue", f);
- break;
-
- case axs_lvalue_memory:
- fputs_filtered ("memory lvalue", f);
- break;
-
- case axs_lvalue_register:
- fprintf_filtered (f, "register %d lvalue", value->u.reg);
- break;
- }
-
- fputs_filtered (" : ", f);
- type_print (value->type, "", f, -1);
-}
-
static void
agent_command (char *exp, int from_tty)
another command, change the error message; the user shouldn't
have to know anything about agent expressions. */
if (overlay_debugging)
- error ("GDB can't do agent expression translation with overlays.");
+ error (_("GDB can't do agent expression translation with overlays."));
if (exp == 0)
- error_no_arg ("expression to translate");
+ error_no_arg (_("expression to translate"));
expr = parse_expression (exp);
old_chain = make_cleanup (free_current_contents, &expr);
- agent = gen_trace_for_expr (fi->pc, expr);
+ agent = gen_trace_for_expr (get_frame_pc (fi), expr);
make_cleanup_free_agent_expr (agent);
ax_print (gdb_stdout, agent);
_initialize_ax_gdb (void)
{
add_cmd ("agent", class_maintenance, agent_command,
- "Translate an expression into remote agent bytecode.",
+ _("Translate an expression into remote agent bytecode."),
&maintenancelist);
}
projects / deliverable / binutils-gdb.git / blobdiff