Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
/* Dwarf2 Expression Evaluator
|
|
|
|
|
Copyright 2001, 2002, 2003 Free Software Foundation, Inc.
|
|
|
|
|
Contributed by Daniel Berlin (dan@dberlin.org)
|
|
|
|
|
|
|
|
|
|
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
|
|
|
|
|
(at your option) any later version.
|
|
|
|
|
|
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
|
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
|
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. */
|
|
|
|
|
|
|
|
|
|
#include "defs.h"
|
|
|
|
|
#include "symtab.h"
|
|
|
|
|
#include "gdbtypes.h"
|
|
|
|
|
#include "value.h"
|
|
|
|
|
#include "gdbcore.h"
|
|
|
|
|
#include "elf/dwarf2.h"
|
|
|
|
|
#include "dwarf2expr.h"
|
|
|
|
|
|
|
|
|
|
/* Local prototypes. */
|
|
|
|
|
|
|
|
|
|
static void execute_stack_op (struct dwarf_expr_context *,
|
|
|
|
|
unsigned char *, unsigned char *);
|
|
|
|
|
|
|
|
|
|
/* Create a new context for the expression evaluator. */
|
|
|
|
|
|
|
|
|
|
struct dwarf_expr_context *
|
2003-03-06 02:00:02 +08:00
|
|
|
|
new_dwarf_expr_context (void)
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
{
|
|
|
|
|
struct dwarf_expr_context *retval;
|
|
|
|
|
retval = xcalloc (1, sizeof (struct dwarf_expr_context));
|
2003-05-15 06:45:41 +08:00
|
|
|
|
retval->stack_len = 0;
|
|
|
|
|
retval->stack_allocated = 10;
|
|
|
|
|
retval->stack = xmalloc (retval->stack_allocated * sizeof (CORE_ADDR));
|
2004-08-25 05:01:49 +08:00
|
|
|
|
retval->num_pieces = 0;
|
|
|
|
|
retval->pieces = 0;
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
return retval;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Release the memory allocated to CTX. */
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
free_dwarf_expr_context (struct dwarf_expr_context *ctx)
|
|
|
|
|
{
|
|
|
|
|
xfree (ctx->stack);
|
2004-08-25 05:01:49 +08:00
|
|
|
|
xfree (ctx->pieces);
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
xfree (ctx);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Expand the memory allocated to CTX's stack to contain at least
|
|
|
|
|
NEED more elements than are currently used. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
dwarf_expr_grow_stack (struct dwarf_expr_context *ctx, size_t need)
|
|
|
|
|
{
|
|
|
|
|
if (ctx->stack_len + need > ctx->stack_allocated)
|
|
|
|
|
{
|
2003-05-15 06:45:41 +08:00
|
|
|
|
size_t newlen = ctx->stack_len + need + 10;
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
ctx->stack = xrealloc (ctx->stack,
|
2003-05-15 06:45:41 +08:00
|
|
|
|
newlen * sizeof (CORE_ADDR));
|
|
|
|
|
ctx->stack_allocated = newlen;
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Push VALUE onto CTX's stack. */
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
dwarf_expr_push (struct dwarf_expr_context *ctx, CORE_ADDR value)
|
|
|
|
|
{
|
|
|
|
|
dwarf_expr_grow_stack (ctx, 1);
|
|
|
|
|
ctx->stack[ctx->stack_len++] = value;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Pop the top item off of CTX's stack. */
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
dwarf_expr_pop (struct dwarf_expr_context *ctx)
|
|
|
|
|
{
|
|
|
|
|
if (ctx->stack_len <= 0)
|
|
|
|
|
error ("dwarf expression stack underflow");
|
|
|
|
|
ctx->stack_len--;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Retrieve the N'th item on CTX's stack. */
|
|
|
|
|
|
|
|
|
|
CORE_ADDR
|
|
|
|
|
dwarf_expr_fetch (struct dwarf_expr_context *ctx, int n)
|
|
|
|
|
{
|
|
|
|
|
if (ctx->stack_len < n)
|
|
|
|
|
error ("Asked for position %d of stack, stack only has %d elements on it\n",
|
|
|
|
|
n, ctx->stack_len);
|
|
|
|
|
return ctx->stack[ctx->stack_len - (1 + n)];
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
2004-08-25 05:01:49 +08:00
|
|
|
|
/* Add a new piece to CTX's piece list. */
|
|
|
|
|
static void
|
|
|
|
|
add_piece (struct dwarf_expr_context *ctx,
|
|
|
|
|
int in_reg, CORE_ADDR value, ULONGEST size)
|
|
|
|
|
{
|
|
|
|
|
struct dwarf_expr_piece *p;
|
|
|
|
|
|
|
|
|
|
ctx->num_pieces++;
|
|
|
|
|
|
|
|
|
|
if (ctx->pieces)
|
|
|
|
|
ctx->pieces = xrealloc (ctx->pieces,
|
|
|
|
|
(ctx->num_pieces
|
|
|
|
|
* sizeof (struct dwarf_expr_piece)));
|
|
|
|
|
else
|
|
|
|
|
ctx->pieces = xmalloc (ctx->num_pieces
|
|
|
|
|
* sizeof (struct dwarf_expr_piece));
|
|
|
|
|
|
|
|
|
|
p = &ctx->pieces[ctx->num_pieces - 1];
|
|
|
|
|
p->in_reg = in_reg;
|
|
|
|
|
p->value = value;
|
|
|
|
|
p->size = size;
|
|
|
|
|
}
|
|
|
|
|
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
/* Evaluate the expression at ADDR (LEN bytes long) using the context
|
|
|
|
|
CTX. */
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
dwarf_expr_eval (struct dwarf_expr_context *ctx, unsigned char *addr,
|
|
|
|
|
size_t len)
|
|
|
|
|
{
|
|
|
|
|
execute_stack_op (ctx, addr, addr + len);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Decode the unsigned LEB128 constant at BUF into the variable pointed to
|
|
|
|
|
by R, and return the new value of BUF. Verify that it doesn't extend
|
|
|
|
|
past BUF_END. */
|
|
|
|
|
|
2003-03-01 04:03:18 +08:00
|
|
|
|
unsigned char *
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
read_uleb128 (unsigned char *buf, unsigned char *buf_end, ULONGEST * r)
|
|
|
|
|
{
|
|
|
|
|
unsigned shift = 0;
|
|
|
|
|
ULONGEST result = 0;
|
|
|
|
|
unsigned char byte;
|
|
|
|
|
|
|
|
|
|
while (1)
|
|
|
|
|
{
|
|
|
|
|
if (buf >= buf_end)
|
|
|
|
|
error ("read_uleb128: Corrupted DWARF expression.");
|
|
|
|
|
|
|
|
|
|
byte = *buf++;
|
|
|
|
|
result |= (byte & 0x7f) << shift;
|
|
|
|
|
if ((byte & 0x80) == 0)
|
|
|
|
|
break;
|
|
|
|
|
shift += 7;
|
|
|
|
|
}
|
|
|
|
|
*r = result;
|
|
|
|
|
return buf;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Decode the signed LEB128 constant at BUF into the variable pointed to
|
|
|
|
|
by R, and return the new value of BUF. Verify that it doesn't extend
|
|
|
|
|
past BUF_END. */
|
|
|
|
|
|
2003-03-01 04:03:18 +08:00
|
|
|
|
unsigned char *
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
read_sleb128 (unsigned char *buf, unsigned char *buf_end, LONGEST * r)
|
|
|
|
|
{
|
|
|
|
|
unsigned shift = 0;
|
|
|
|
|
LONGEST result = 0;
|
|
|
|
|
unsigned char byte;
|
|
|
|
|
|
|
|
|
|
while (1)
|
|
|
|
|
{
|
|
|
|
|
if (buf >= buf_end)
|
|
|
|
|
error ("read_sleb128: Corrupted DWARF expression.");
|
|
|
|
|
|
|
|
|
|
byte = *buf++;
|
|
|
|
|
result |= (byte & 0x7f) << shift;
|
|
|
|
|
shift += 7;
|
|
|
|
|
if ((byte & 0x80) == 0)
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
if (shift < (sizeof (*r) * 8) && (byte & 0x40) != 0)
|
|
|
|
|
result |= -(1 << shift);
|
|
|
|
|
|
|
|
|
|
*r = result;
|
|
|
|
|
return buf;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Read an address from BUF, and verify that it doesn't extend past
|
|
|
|
|
BUF_END. The address is returned, and *BYTES_READ is set to the
|
|
|
|
|
number of bytes read from BUF. */
|
|
|
|
|
|
2003-04-13 23:43:35 +08:00
|
|
|
|
CORE_ADDR
|
|
|
|
|
dwarf2_read_address (unsigned char *buf, unsigned char *buf_end, int *bytes_read)
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
{
|
|
|
|
|
CORE_ADDR result;
|
|
|
|
|
|
|
|
|
|
if (buf_end - buf < TARGET_ADDR_BIT / TARGET_CHAR_BIT)
|
2003-04-13 23:43:35 +08:00
|
|
|
|
error ("dwarf2_read_address: Corrupted DWARF expression.");
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
|
|
|
|
|
*bytes_read = TARGET_ADDR_BIT / TARGET_CHAR_BIT;
|
2003-05-23 02:37:05 +08:00
|
|
|
|
/* NOTE: cagney/2003-05-22: This extract is assuming that a DWARF 2
|
|
|
|
|
address is always unsigned. That may or may not be true. */
|
|
|
|
|
result = extract_unsigned_integer (buf, TARGET_ADDR_BIT / TARGET_CHAR_BIT);
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
return result;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Return the type of an address, for unsigned arithmetic. */
|
|
|
|
|
|
|
|
|
|
static struct type *
|
|
|
|
|
unsigned_address_type (void)
|
|
|
|
|
{
|
|
|
|
|
switch (TARGET_ADDR_BIT / TARGET_CHAR_BIT)
|
|
|
|
|
{
|
|
|
|
|
case 2:
|
|
|
|
|
return builtin_type_uint16;
|
|
|
|
|
case 4:
|
|
|
|
|
return builtin_type_uint32;
|
|
|
|
|
case 8:
|
|
|
|
|
return builtin_type_uint64;
|
|
|
|
|
default:
|
|
|
|
|
internal_error (__FILE__, __LINE__,
|
|
|
|
|
"Unsupported address size.\n");
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Return the type of an address, for signed arithmetic. */
|
|
|
|
|
|
|
|
|
|
static struct type *
|
|
|
|
|
signed_address_type (void)
|
|
|
|
|
{
|
|
|
|
|
switch (TARGET_ADDR_BIT / TARGET_CHAR_BIT)
|
|
|
|
|
{
|
|
|
|
|
case 2:
|
|
|
|
|
return builtin_type_int16;
|
|
|
|
|
case 4:
|
|
|
|
|
return builtin_type_int32;
|
|
|
|
|
case 8:
|
|
|
|
|
return builtin_type_int64;
|
|
|
|
|
default:
|
|
|
|
|
internal_error (__FILE__, __LINE__,
|
|
|
|
|
"Unsupported address size.\n");
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* The engine for the expression evaluator. Using the context in CTX,
|
|
|
|
|
evaluate the expression between OP_PTR and OP_END. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
execute_stack_op (struct dwarf_expr_context *ctx, unsigned char *op_ptr,
|
|
|
|
|
unsigned char *op_end)
|
|
|
|
|
{
|
2003-05-15 06:45:41 +08:00
|
|
|
|
ctx->in_reg = 0;
|
|
|
|
|
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
while (op_ptr < op_end)
|
|
|
|
|
{
|
|
|
|
|
enum dwarf_location_atom op = *op_ptr++;
|
2003-04-13 23:53:44 +08:00
|
|
|
|
CORE_ADDR result;
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
ULONGEST uoffset, reg;
|
|
|
|
|
LONGEST offset;
|
|
|
|
|
int bytes_read;
|
|
|
|
|
|
|
|
|
|
switch (op)
|
|
|
|
|
{
|
|
|
|
|
case DW_OP_lit0:
|
|
|
|
|
case DW_OP_lit1:
|
|
|
|
|
case DW_OP_lit2:
|
|
|
|
|
case DW_OP_lit3:
|
|
|
|
|
case DW_OP_lit4:
|
|
|
|
|
case DW_OP_lit5:
|
|
|
|
|
case DW_OP_lit6:
|
|
|
|
|
case DW_OP_lit7:
|
|
|
|
|
case DW_OP_lit8:
|
|
|
|
|
case DW_OP_lit9:
|
|
|
|
|
case DW_OP_lit10:
|
|
|
|
|
case DW_OP_lit11:
|
|
|
|
|
case DW_OP_lit12:
|
|
|
|
|
case DW_OP_lit13:
|
|
|
|
|
case DW_OP_lit14:
|
|
|
|
|
case DW_OP_lit15:
|
|
|
|
|
case DW_OP_lit16:
|
|
|
|
|
case DW_OP_lit17:
|
|
|
|
|
case DW_OP_lit18:
|
|
|
|
|
case DW_OP_lit19:
|
|
|
|
|
case DW_OP_lit20:
|
|
|
|
|
case DW_OP_lit21:
|
|
|
|
|
case DW_OP_lit22:
|
|
|
|
|
case DW_OP_lit23:
|
|
|
|
|
case DW_OP_lit24:
|
|
|
|
|
case DW_OP_lit25:
|
|
|
|
|
case DW_OP_lit26:
|
|
|
|
|
case DW_OP_lit27:
|
|
|
|
|
case DW_OP_lit28:
|
|
|
|
|
case DW_OP_lit29:
|
|
|
|
|
case DW_OP_lit30:
|
|
|
|
|
case DW_OP_lit31:
|
|
|
|
|
result = op - DW_OP_lit0;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_addr:
|
2003-04-13 23:43:35 +08:00
|
|
|
|
result = dwarf2_read_address (op_ptr, op_end, &bytes_read);
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
op_ptr += bytes_read;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_const1u:
|
|
|
|
|
result = extract_unsigned_integer (op_ptr, 1);
|
|
|
|
|
op_ptr += 1;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_const1s:
|
|
|
|
|
result = extract_signed_integer (op_ptr, 1);
|
|
|
|
|
op_ptr += 1;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_const2u:
|
|
|
|
|
result = extract_unsigned_integer (op_ptr, 2);
|
|
|
|
|
op_ptr += 2;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_const2s:
|
|
|
|
|
result = extract_signed_integer (op_ptr, 2);
|
|
|
|
|
op_ptr += 2;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_const4u:
|
|
|
|
|
result = extract_unsigned_integer (op_ptr, 4);
|
|
|
|
|
op_ptr += 4;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_const4s:
|
|
|
|
|
result = extract_signed_integer (op_ptr, 4);
|
|
|
|
|
op_ptr += 4;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_const8u:
|
|
|
|
|
result = extract_unsigned_integer (op_ptr, 8);
|
|
|
|
|
op_ptr += 8;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_const8s:
|
|
|
|
|
result = extract_signed_integer (op_ptr, 8);
|
|
|
|
|
op_ptr += 8;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_constu:
|
|
|
|
|
op_ptr = read_uleb128 (op_ptr, op_end, &uoffset);
|
|
|
|
|
result = uoffset;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_consts:
|
|
|
|
|
op_ptr = read_sleb128 (op_ptr, op_end, &offset);
|
|
|
|
|
result = offset;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
/* The DW_OP_reg operations are required to occur alone in
|
|
|
|
|
location expressions. */
|
|
|
|
|
case DW_OP_reg0:
|
|
|
|
|
case DW_OP_reg1:
|
|
|
|
|
case DW_OP_reg2:
|
|
|
|
|
case DW_OP_reg3:
|
|
|
|
|
case DW_OP_reg4:
|
|
|
|
|
case DW_OP_reg5:
|
|
|
|
|
case DW_OP_reg6:
|
|
|
|
|
case DW_OP_reg7:
|
|
|
|
|
case DW_OP_reg8:
|
|
|
|
|
case DW_OP_reg9:
|
|
|
|
|
case DW_OP_reg10:
|
|
|
|
|
case DW_OP_reg11:
|
|
|
|
|
case DW_OP_reg12:
|
|
|
|
|
case DW_OP_reg13:
|
|
|
|
|
case DW_OP_reg14:
|
|
|
|
|
case DW_OP_reg15:
|
|
|
|
|
case DW_OP_reg16:
|
|
|
|
|
case DW_OP_reg17:
|
|
|
|
|
case DW_OP_reg18:
|
|
|
|
|
case DW_OP_reg19:
|
|
|
|
|
case DW_OP_reg20:
|
|
|
|
|
case DW_OP_reg21:
|
|
|
|
|
case DW_OP_reg22:
|
|
|
|
|
case DW_OP_reg23:
|
|
|
|
|
case DW_OP_reg24:
|
|
|
|
|
case DW_OP_reg25:
|
|
|
|
|
case DW_OP_reg26:
|
|
|
|
|
case DW_OP_reg27:
|
|
|
|
|
case DW_OP_reg28:
|
|
|
|
|
case DW_OP_reg29:
|
|
|
|
|
case DW_OP_reg30:
|
|
|
|
|
case DW_OP_reg31:
|
2003-05-15 06:45:41 +08:00
|
|
|
|
if (op_ptr != op_end && *op_ptr != DW_OP_piece)
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
error ("DWARF-2 expression error: DW_OP_reg operations must be "
|
2003-05-15 06:45:41 +08:00
|
|
|
|
"used either alone or in conjuction with DW_OP_piece.");
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
|
2003-04-13 23:53:44 +08:00
|
|
|
|
result = op - DW_OP_reg0;
|
|
|
|
|
ctx->in_reg = 1;
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_regx:
|
|
|
|
|
op_ptr = read_uleb128 (op_ptr, op_end, ®);
|
2003-05-15 06:45:41 +08:00
|
|
|
|
if (op_ptr != op_end && *op_ptr != DW_OP_piece)
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
error ("DWARF-2 expression error: DW_OP_reg operations must be "
|
2003-05-15 06:45:41 +08:00
|
|
|
|
"used either alone or in conjuction with DW_OP_piece.");
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
|
2003-04-13 23:53:44 +08:00
|
|
|
|
result = reg;
|
|
|
|
|
ctx->in_reg = 1;
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_breg0:
|
|
|
|
|
case DW_OP_breg1:
|
|
|
|
|
case DW_OP_breg2:
|
|
|
|
|
case DW_OP_breg3:
|
|
|
|
|
case DW_OP_breg4:
|
|
|
|
|
case DW_OP_breg5:
|
|
|
|
|
case DW_OP_breg6:
|
|
|
|
|
case DW_OP_breg7:
|
|
|
|
|
case DW_OP_breg8:
|
|
|
|
|
case DW_OP_breg9:
|
|
|
|
|
case DW_OP_breg10:
|
|
|
|
|
case DW_OP_breg11:
|
|
|
|
|
case DW_OP_breg12:
|
|
|
|
|
case DW_OP_breg13:
|
|
|
|
|
case DW_OP_breg14:
|
|
|
|
|
case DW_OP_breg15:
|
|
|
|
|
case DW_OP_breg16:
|
|
|
|
|
case DW_OP_breg17:
|
|
|
|
|
case DW_OP_breg18:
|
|
|
|
|
case DW_OP_breg19:
|
|
|
|
|
case DW_OP_breg20:
|
|
|
|
|
case DW_OP_breg21:
|
|
|
|
|
case DW_OP_breg22:
|
|
|
|
|
case DW_OP_breg23:
|
|
|
|
|
case DW_OP_breg24:
|
|
|
|
|
case DW_OP_breg25:
|
|
|
|
|
case DW_OP_breg26:
|
|
|
|
|
case DW_OP_breg27:
|
|
|
|
|
case DW_OP_breg28:
|
|
|
|
|
case DW_OP_breg29:
|
|
|
|
|
case DW_OP_breg30:
|
|
|
|
|
case DW_OP_breg31:
|
|
|
|
|
{
|
|
|
|
|
op_ptr = read_sleb128 (op_ptr, op_end, &offset);
|
2003-04-13 23:53:44 +08:00
|
|
|
|
result = (ctx->read_reg) (ctx->baton, op - DW_OP_breg0);
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
result += offset;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_bregx:
|
|
|
|
|
{
|
|
|
|
|
op_ptr = read_uleb128 (op_ptr, op_end, ®);
|
|
|
|
|
op_ptr = read_sleb128 (op_ptr, op_end, &offset);
|
2003-04-13 23:53:44 +08:00
|
|
|
|
result = (ctx->read_reg) (ctx->baton, reg);
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
result += offset;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_fbreg:
|
|
|
|
|
{
|
|
|
|
|
unsigned char *datastart;
|
|
|
|
|
size_t datalen;
|
|
|
|
|
unsigned int before_stack_len;
|
|
|
|
|
|
|
|
|
|
op_ptr = read_sleb128 (op_ptr, op_end, &offset);
|
|
|
|
|
/* Rather than create a whole new context, we simply
|
|
|
|
|
record the stack length before execution, then reset it
|
|
|
|
|
afterwards, effectively erasing whatever the recursive
|
|
|
|
|
call put there. */
|
|
|
|
|
before_stack_len = ctx->stack_len;
|
2003-04-02 03:11:01 +08:00
|
|
|
|
/* FIXME: cagney/2003-03-26: This code should be using
|
|
|
|
|
get_frame_base_address(), and then implement a dwarf2
|
|
|
|
|
specific this_base method. */
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
(ctx->get_frame_base) (ctx->baton, &datastart, &datalen);
|
|
|
|
|
dwarf_expr_eval (ctx, datastart, datalen);
|
|
|
|
|
result = dwarf_expr_fetch (ctx, 0);
|
2003-04-13 23:53:44 +08:00
|
|
|
|
if (ctx->in_reg)
|
|
|
|
|
result = (ctx->read_reg) (ctx->baton, result);
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
result = result + offset;
|
|
|
|
|
ctx->stack_len = before_stack_len;
|
|
|
|
|
ctx->in_reg = 0;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_dup:
|
|
|
|
|
result = dwarf_expr_fetch (ctx, 0);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_drop:
|
|
|
|
|
dwarf_expr_pop (ctx);
|
|
|
|
|
goto no_push;
|
|
|
|
|
|
|
|
|
|
case DW_OP_pick:
|
|
|
|
|
offset = *op_ptr++;
|
|
|
|
|
result = dwarf_expr_fetch (ctx, offset);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_over:
|
|
|
|
|
result = dwarf_expr_fetch (ctx, 1);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_rot:
|
|
|
|
|
{
|
|
|
|
|
CORE_ADDR t1, t2, t3;
|
|
|
|
|
|
|
|
|
|
if (ctx->stack_len < 3)
|
|
|
|
|
error ("Not enough elements for DW_OP_rot. Need 3, have %d\n",
|
|
|
|
|
ctx->stack_len);
|
|
|
|
|
t1 = ctx->stack[ctx->stack_len - 1];
|
|
|
|
|
t2 = ctx->stack[ctx->stack_len - 2];
|
|
|
|
|
t3 = ctx->stack[ctx->stack_len - 3];
|
|
|
|
|
ctx->stack[ctx->stack_len - 1] = t2;
|
|
|
|
|
ctx->stack[ctx->stack_len - 2] = t3;
|
|
|
|
|
ctx->stack[ctx->stack_len - 3] = t1;
|
|
|
|
|
goto no_push;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
case DW_OP_deref:
|
|
|
|
|
case DW_OP_deref_size:
|
|
|
|
|
case DW_OP_abs:
|
|
|
|
|
case DW_OP_neg:
|
|
|
|
|
case DW_OP_not:
|
|
|
|
|
case DW_OP_plus_uconst:
|
|
|
|
|
/* Unary operations. */
|
|
|
|
|
result = dwarf_expr_fetch (ctx, 0);
|
|
|
|
|
dwarf_expr_pop (ctx);
|
|
|
|
|
|
|
|
|
|
switch (op)
|
|
|
|
|
{
|
|
|
|
|
case DW_OP_deref:
|
|
|
|
|
{
|
|
|
|
|
char *buf = alloca (TARGET_ADDR_BIT / TARGET_CHAR_BIT);
|
|
|
|
|
int bytes_read;
|
|
|
|
|
|
|
|
|
|
(ctx->read_mem) (ctx->baton, buf, result,
|
|
|
|
|
TARGET_ADDR_BIT / TARGET_CHAR_BIT);
|
2003-04-13 23:43:35 +08:00
|
|
|
|
result = dwarf2_read_address (buf,
|
|
|
|
|
buf + (TARGET_ADDR_BIT
|
|
|
|
|
/ TARGET_CHAR_BIT),
|
|
|
|
|
&bytes_read);
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_deref_size:
|
|
|
|
|
{
|
|
|
|
|
char *buf = alloca (TARGET_ADDR_BIT / TARGET_CHAR_BIT);
|
|
|
|
|
int bytes_read;
|
|
|
|
|
|
|
|
|
|
(ctx->read_mem) (ctx->baton, buf, result, *op_ptr++);
|
2003-04-13 23:43:35 +08:00
|
|
|
|
result = dwarf2_read_address (buf,
|
|
|
|
|
buf + (TARGET_ADDR_BIT
|
|
|
|
|
/ TARGET_CHAR_BIT),
|
|
|
|
|
&bytes_read);
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_abs:
|
|
|
|
|
if ((signed int) result < 0)
|
|
|
|
|
result = -result;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_neg:
|
|
|
|
|
result = -result;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_not:
|
|
|
|
|
result = ~result;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_plus_uconst:
|
|
|
|
|
op_ptr = read_uleb128 (op_ptr, op_end, ®);
|
|
|
|
|
result += reg;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_and:
|
|
|
|
|
case DW_OP_div:
|
|
|
|
|
case DW_OP_minus:
|
|
|
|
|
case DW_OP_mod:
|
|
|
|
|
case DW_OP_mul:
|
|
|
|
|
case DW_OP_or:
|
|
|
|
|
case DW_OP_plus:
|
|
|
|
|
case DW_OP_shl:
|
|
|
|
|
case DW_OP_shr:
|
|
|
|
|
case DW_OP_shra:
|
|
|
|
|
case DW_OP_xor:
|
|
|
|
|
case DW_OP_le:
|
|
|
|
|
case DW_OP_ge:
|
|
|
|
|
case DW_OP_eq:
|
|
|
|
|
case DW_OP_lt:
|
|
|
|
|
case DW_OP_gt:
|
|
|
|
|
case DW_OP_ne:
|
|
|
|
|
{
|
|
|
|
|
/* Binary operations. Use the value engine to do computations in
|
|
|
|
|
the right width. */
|
|
|
|
|
CORE_ADDR first, second;
|
|
|
|
|
enum exp_opcode binop;
|
|
|
|
|
struct value *val1, *val2;
|
|
|
|
|
|
|
|
|
|
second = dwarf_expr_fetch (ctx, 0);
|
|
|
|
|
dwarf_expr_pop (ctx);
|
|
|
|
|
|
2004-01-18 07:09:29 +08:00
|
|
|
|
first = dwarf_expr_fetch (ctx, 0);
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
dwarf_expr_pop (ctx);
|
|
|
|
|
|
|
|
|
|
val1 = value_from_longest (unsigned_address_type (), first);
|
|
|
|
|
val2 = value_from_longest (unsigned_address_type (), second);
|
|
|
|
|
|
|
|
|
|
switch (op)
|
|
|
|
|
{
|
|
|
|
|
case DW_OP_and:
|
|
|
|
|
binop = BINOP_BITWISE_AND;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_div:
|
|
|
|
|
binop = BINOP_DIV;
|
2004-05-21 15:50:03 +08:00
|
|
|
|
break;
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
case DW_OP_minus:
|
|
|
|
|
binop = BINOP_SUB;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_mod:
|
|
|
|
|
binop = BINOP_MOD;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_mul:
|
|
|
|
|
binop = BINOP_MUL;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_or:
|
|
|
|
|
binop = BINOP_BITWISE_IOR;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_plus:
|
|
|
|
|
binop = BINOP_ADD;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_shl:
|
|
|
|
|
binop = BINOP_LSH;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_shr:
|
|
|
|
|
binop = BINOP_RSH;
|
2004-05-21 15:50:03 +08:00
|
|
|
|
break;
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
case DW_OP_shra:
|
|
|
|
|
binop = BINOP_RSH;
|
|
|
|
|
val1 = value_from_longest (signed_address_type (), first);
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_xor:
|
|
|
|
|
binop = BINOP_BITWISE_XOR;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_le:
|
|
|
|
|
binop = BINOP_LEQ;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_ge:
|
|
|
|
|
binop = BINOP_GEQ;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_eq:
|
|
|
|
|
binop = BINOP_EQUAL;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_lt:
|
|
|
|
|
binop = BINOP_LESS;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_gt:
|
|
|
|
|
binop = BINOP_GTR;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_ne:
|
|
|
|
|
binop = BINOP_NOTEQUAL;
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
internal_error (__FILE__, __LINE__,
|
|
|
|
|
"Can't be reached.");
|
|
|
|
|
}
|
|
|
|
|
result = value_as_long (value_binop (val1, val2, binop));
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_GNU_push_tls_address:
|
2003-07-22 23:41:59 +08:00
|
|
|
|
/* Variable is at a constant offset in the thread-local
|
|
|
|
|
storage block into the objfile for the current thread and
|
|
|
|
|
the dynamic linker module containing this expression. Here
|
|
|
|
|
we return returns the offset from that base. The top of the
|
|
|
|
|
stack has the offset from the beginning of the thread
|
|
|
|
|
control block at which the variable is located. Nothing
|
|
|
|
|
should follow this operator, so the top of stack would be
|
|
|
|
|
returned. */
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
result = dwarf_expr_fetch (ctx, 0);
|
|
|
|
|
dwarf_expr_pop (ctx);
|
|
|
|
|
result = (ctx->get_tls_address) (ctx->baton, result);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_skip:
|
|
|
|
|
offset = extract_signed_integer (op_ptr, 2);
|
|
|
|
|
op_ptr += 2;
|
|
|
|
|
op_ptr += offset;
|
|
|
|
|
goto no_push;
|
|
|
|
|
|
|
|
|
|
case DW_OP_bra:
|
|
|
|
|
offset = extract_signed_integer (op_ptr, 2);
|
|
|
|
|
op_ptr += 2;
|
|
|
|
|
if (dwarf_expr_fetch (ctx, 0) != 0)
|
|
|
|
|
op_ptr += offset;
|
|
|
|
|
dwarf_expr_pop (ctx);
|
|
|
|
|
goto no_push;
|
|
|
|
|
|
|
|
|
|
case DW_OP_nop:
|
|
|
|
|
goto no_push;
|
|
|
|
|
|
2004-08-25 05:01:49 +08:00
|
|
|
|
case DW_OP_piece:
|
|
|
|
|
{
|
|
|
|
|
ULONGEST size;
|
|
|
|
|
CORE_ADDR addr_or_regnum;
|
|
|
|
|
|
|
|
|
|
/* Record the piece. */
|
|
|
|
|
op_ptr = read_uleb128 (op_ptr, op_end, &size);
|
|
|
|
|
addr_or_regnum = dwarf_expr_fetch (ctx, 0);
|
|
|
|
|
add_piece (ctx, ctx->in_reg, addr_or_regnum, size);
|
|
|
|
|
|
|
|
|
|
/* Pop off the address/regnum, and clear the in_reg flag. */
|
|
|
|
|
dwarf_expr_pop (ctx);
|
|
|
|
|
ctx->in_reg = 0;
|
|
|
|
|
}
|
|
|
|
|
goto no_push;
|
|
|
|
|
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
default:
|
2004-01-18 07:09:29 +08:00
|
|
|
|
error ("Unhandled dwarf expression opcode 0x%x", op);
|
Based on a patch from Daniel Berlin (dberlin@dberlin.org).
* symtab.h: Add opaque declarations of struct axs_value and
struct agent_expr.
(enum address_class): Add LOC_COMPUTED and LOC_COMPUTED_ARG.
(struct location_funcs): New type.
(struct symbol): Add "loc" to aux_value.
(SYMBOL_LOCATION_BATON, SYMBOL_LOCATION_FUNCS): New macros.
* dwarf2read.c: Include "dwarf2expr.h".
(dwarf2_symbol_mark_computed): New function.
(read_func_scope): Use it.
(var_decode_location): New function.
(new_symbol): Use it.
* dwarf2expr.c, dwarf2expr.h, dwarf2loc.c, dwarf2loc.h: New files.
* Makefile.in (SFILES): Add dwarf2loc.c and dwarf2expr.c.
(dwarf2expr_h, dwarf2loc_h): New variables.
(COMMON_OBS): Add dwarf2expr.o and dwarf2loc.o.
(dwarf2expr.o, dwarf2loc.o): New rules.
(dwarf2read.o): Add $(dwarf2expr_h) and $(dwarf2loc_h).
* buildsym.c (finish_block): Handle LOC_COMPUTED and
LOC_COMPUTED_ARG.
* findvar.c (symbol_read_needs_frame, read_var_value): Likewise.
* m2-exp.y (yylex): Likewise.
* printcmd.c (address_info, print_frame_args): Likewise.
* stack.c (print_block_frame_locals, print_frame_arg_vars): Likewise.
* symmisc.c (print_symbol, print_partial_symbols): Likewise.
* ada-lang.c (ada_resolve_subexp, symtab_for_sym)
(ada_add_block_symbols, fill_in_ada_prototype): Likewise.
* symtab.c (lookup_block_symbol): Likewise.
2003-02-21 23:24:18 +08:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Most things push a result value. */
|
|
|
|
|
dwarf_expr_push (ctx, result);
|
|
|
|
|
no_push:;
|
|
|
|
|
}
|
|
|
|
|
}
|