the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
/* Convert a DWARF location expression to C
|
|
|
|
|
|
2015-01-01 10:32:14 +01:00
|
|
|
|
Copyright (C) 2014-2015 Free Software Foundation, Inc.
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
|
|
|
|
|
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 3 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, see <http://www.gnu.org/licenses/>. */
|
|
|
|
|
|
|
|
|
|
#include "defs.h"
|
|
|
|
|
#include "dwarf2.h"
|
|
|
|
|
#include "dwarf2expr.h"
|
|
|
|
|
#include "dwarf2loc.h"
|
|
|
|
|
#include "ui-file.h"
|
|
|
|
|
#include "utils.h"
|
|
|
|
|
#include "compile-internal.h"
|
|
|
|
|
#include "compile.h"
|
|
|
|
|
#include "block.h"
|
|
|
|
|
#include "dwarf2-frame.h"
|
|
|
|
|
#include "gdb_vecs.h"
|
|
|
|
|
#include "value.h"
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/* Information about a given instruction. */
|
|
|
|
|
|
|
|
|
|
struct insn_info
|
|
|
|
|
{
|
|
|
|
|
/* Stack depth at entry. */
|
|
|
|
|
|
|
|
|
|
unsigned int depth;
|
|
|
|
|
|
|
|
|
|
/* Whether this instruction has been visited. */
|
|
|
|
|
|
|
|
|
|
unsigned int visited : 1;
|
|
|
|
|
|
|
|
|
|
/* Whether this instruction needs a label. */
|
|
|
|
|
|
|
|
|
|
unsigned int label : 1;
|
|
|
|
|
|
|
|
|
|
/* Whether this instruction is DW_OP_GNU_push_tls_address. This is
|
|
|
|
|
a hack until we can add a feature to glibc to let us properly
|
|
|
|
|
generate code for TLS. */
|
|
|
|
|
|
|
|
|
|
unsigned int is_tls : 1;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* A helper function for compute_stack_depth that does the work. This
|
|
|
|
|
examines the DWARF expression starting from START and computes
|
|
|
|
|
stack effects.
|
|
|
|
|
|
|
|
|
|
NEED_TEMPVAR is an out parameter which is set if this expression
|
|
|
|
|
needs a special temporary variable to be emitted (see the code
|
|
|
|
|
generator).
|
|
|
|
|
INFO is an array of insn_info objects, indexed by offset from the
|
|
|
|
|
start of the DWARF expression.
|
|
|
|
|
TO_DO is a list of bytecodes which must be examined; it may be
|
|
|
|
|
added to by this function.
|
|
|
|
|
BYTE_ORDER and ADDR_SIZE describe this bytecode in the obvious way.
|
|
|
|
|
OP_PTR and OP_END are the bounds of the DWARF expression. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
compute_stack_depth_worker (int start, int *need_tempvar,
|
|
|
|
|
struct insn_info *info,
|
|
|
|
|
VEC (int) **to_do,
|
|
|
|
|
enum bfd_endian byte_order, unsigned int addr_size,
|
|
|
|
|
const gdb_byte *op_ptr, const gdb_byte *op_end)
|
|
|
|
|
{
|
|
|
|
|
const gdb_byte * const base = op_ptr;
|
|
|
|
|
int stack_depth;
|
|
|
|
|
|
|
|
|
|
op_ptr += start;
|
|
|
|
|
gdb_assert (info[start].visited);
|
|
|
|
|
stack_depth = info[start].depth;
|
|
|
|
|
|
|
|
|
|
while (op_ptr < op_end)
|
|
|
|
|
{
|
2015-08-06 23:21:41 +02:00
|
|
|
|
enum dwarf_location_atom op = (enum dwarf_location_atom) *op_ptr;
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
uint64_t reg;
|
|
|
|
|
int64_t offset;
|
|
|
|
|
int ndx = op_ptr - base;
|
|
|
|
|
|
|
|
|
|
#define SET_CHECK_DEPTH(WHERE) \
|
|
|
|
|
if (info[WHERE].visited) \
|
|
|
|
|
{ \
|
|
|
|
|
if (info[WHERE].depth != stack_depth) \
|
|
|
|
|
error (_("inconsistent stack depths")); \
|
|
|
|
|
} \
|
|
|
|
|
else \
|
|
|
|
|
{ \
|
|
|
|
|
/* Stack depth not set, so set it. */ \
|
|
|
|
|
info[WHERE].visited = 1; \
|
|
|
|
|
info[WHERE].depth = stack_depth; \
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
SET_CHECK_DEPTH (ndx);
|
|
|
|
|
|
|
|
|
|
++op_ptr;
|
|
|
|
|
|
|
|
|
|
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:
|
|
|
|
|
++stack_depth;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_addr:
|
|
|
|
|
op_ptr += addr_size;
|
|
|
|
|
++stack_depth;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_const1u:
|
|
|
|
|
case DW_OP_const1s:
|
|
|
|
|
op_ptr += 1;
|
|
|
|
|
++stack_depth;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_const2u:
|
|
|
|
|
case DW_OP_const2s:
|
|
|
|
|
op_ptr += 2;
|
|
|
|
|
++stack_depth;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_const4u:
|
|
|
|
|
case DW_OP_const4s:
|
|
|
|
|
op_ptr += 4;
|
|
|
|
|
++stack_depth;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_const8u:
|
|
|
|
|
case DW_OP_const8s:
|
|
|
|
|
op_ptr += 8;
|
|
|
|
|
++stack_depth;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_constu:
|
|
|
|
|
case DW_OP_consts:
|
|
|
|
|
op_ptr = safe_read_sleb128 (op_ptr, op_end, &offset);
|
|
|
|
|
++stack_depth;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
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:
|
|
|
|
|
++stack_depth;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_regx:
|
|
|
|
|
op_ptr = safe_read_uleb128 (op_ptr, op_end, ®);
|
|
|
|
|
++stack_depth;
|
|
|
|
|
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 = safe_read_sleb128 (op_ptr, op_end, &offset);
|
|
|
|
|
++stack_depth;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_bregx:
|
|
|
|
|
{
|
|
|
|
|
op_ptr = safe_read_uleb128 (op_ptr, op_end, ®);
|
|
|
|
|
op_ptr = safe_read_sleb128 (op_ptr, op_end, &offset);
|
|
|
|
|
++stack_depth;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_fbreg:
|
|
|
|
|
op_ptr = safe_read_sleb128 (op_ptr, op_end, &offset);
|
|
|
|
|
++stack_depth;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_dup:
|
|
|
|
|
++stack_depth;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_drop:
|
|
|
|
|
--stack_depth;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_pick:
|
|
|
|
|
++op_ptr;
|
|
|
|
|
++stack_depth;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_rot:
|
|
|
|
|
case DW_OP_swap:
|
|
|
|
|
*need_tempvar = 1;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_over:
|
|
|
|
|
++stack_depth;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_abs:
|
|
|
|
|
case DW_OP_neg:
|
|
|
|
|
case DW_OP_not:
|
|
|
|
|
case DW_OP_deref:
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_deref_size:
|
|
|
|
|
++op_ptr;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_plus_uconst:
|
|
|
|
|
op_ptr = safe_read_uleb128 (op_ptr, op_end, ®);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_div:
|
|
|
|
|
case DW_OP_shra:
|
|
|
|
|
case DW_OP_and:
|
|
|
|
|
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_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:
|
|
|
|
|
--stack_depth;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_call_frame_cfa:
|
|
|
|
|
++stack_depth;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_GNU_push_tls_address:
|
|
|
|
|
info[ndx].is_tls = 1;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_skip:
|
|
|
|
|
offset = extract_signed_integer (op_ptr, 2, byte_order);
|
|
|
|
|
op_ptr += 2;
|
|
|
|
|
offset = op_ptr + offset - base;
|
|
|
|
|
/* If the destination has not been seen yet, add it to the
|
|
|
|
|
to-do list. */
|
|
|
|
|
if (!info[offset].visited)
|
|
|
|
|
VEC_safe_push (int, *to_do, offset);
|
|
|
|
|
SET_CHECK_DEPTH (offset);
|
|
|
|
|
info[offset].label = 1;
|
|
|
|
|
/* We're done with this line of code. */
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
case DW_OP_bra:
|
|
|
|
|
offset = extract_signed_integer (op_ptr, 2, byte_order);
|
|
|
|
|
op_ptr += 2;
|
|
|
|
|
offset = op_ptr + offset - base;
|
|
|
|
|
--stack_depth;
|
|
|
|
|
/* If the destination has not been seen yet, add it to the
|
|
|
|
|
to-do list. */
|
|
|
|
|
if (!info[offset].visited)
|
|
|
|
|
VEC_safe_push (int, *to_do, offset);
|
|
|
|
|
SET_CHECK_DEPTH (offset);
|
|
|
|
|
info[offset].label = 1;
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_nop:
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
error (_("unhandled DWARF op: %s"), get_DW_OP_name (op));
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
gdb_assert (op_ptr == op_end);
|
|
|
|
|
|
|
|
|
|
#undef SET_CHECK_DEPTH
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Compute the maximum needed stack depth of a DWARF expression, and
|
|
|
|
|
some other information as well.
|
|
|
|
|
|
|
|
|
|
BYTE_ORDER and ADDR_SIZE describe this bytecode in the obvious way.
|
|
|
|
|
NEED_TEMPVAR is an out parameter which is set if this expression
|
|
|
|
|
needs a special temporary variable to be emitted (see the code
|
|
|
|
|
generator).
|
|
|
|
|
IS_TLS is an out parameter which is set if this expression refers
|
|
|
|
|
to a TLS variable.
|
|
|
|
|
OP_PTR and OP_END are the bounds of the DWARF expression.
|
|
|
|
|
INITIAL_DEPTH is the initial depth of the DWARF expression stack.
|
|
|
|
|
INFO is an array of insn_info objects, indexed by offset from the
|
|
|
|
|
start of the DWARF expression.
|
|
|
|
|
|
|
|
|
|
This returns the maximum stack depth. */
|
|
|
|
|
|
|
|
|
|
static int
|
|
|
|
|
compute_stack_depth (enum bfd_endian byte_order, unsigned int addr_size,
|
|
|
|
|
int *need_tempvar, int *is_tls,
|
|
|
|
|
const gdb_byte *op_ptr, const gdb_byte *op_end,
|
|
|
|
|
int initial_depth,
|
|
|
|
|
struct insn_info **info)
|
|
|
|
|
{
|
|
|
|
|
unsigned char *set;
|
|
|
|
|
struct cleanup *outer_cleanup, *cleanup;
|
|
|
|
|
VEC (int) *to_do = NULL;
|
|
|
|
|
int stack_depth, i;
|
|
|
|
|
|
|
|
|
|
*info = XCNEWVEC (struct insn_info, op_end - op_ptr);
|
|
|
|
|
outer_cleanup = make_cleanup (xfree, *info);
|
|
|
|
|
|
|
|
|
|
cleanup = make_cleanup (VEC_cleanup (int), &to_do);
|
|
|
|
|
|
|
|
|
|
VEC_safe_push (int, to_do, 0);
|
|
|
|
|
(*info)[0].depth = initial_depth;
|
|
|
|
|
(*info)[0].visited = 1;
|
|
|
|
|
|
|
|
|
|
while (!VEC_empty (int, to_do))
|
|
|
|
|
{
|
|
|
|
|
int ndx = VEC_pop (int, to_do);
|
|
|
|
|
|
|
|
|
|
compute_stack_depth_worker (ndx, need_tempvar, *info, &to_do,
|
|
|
|
|
byte_order, addr_size,
|
|
|
|
|
op_ptr, op_end);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
stack_depth = 0;
|
|
|
|
|
*is_tls = 0;
|
|
|
|
|
for (i = 0; i < op_end - op_ptr; ++i)
|
|
|
|
|
{
|
|
|
|
|
if ((*info)[i].depth > stack_depth)
|
|
|
|
|
stack_depth = (*info)[i].depth;
|
|
|
|
|
if ((*info)[i].is_tls)
|
|
|
|
|
*is_tls = 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
do_cleanups (cleanup);
|
|
|
|
|
discard_cleanups (outer_cleanup);
|
|
|
|
|
return stack_depth + 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#define GCC_UINTPTR "__gdb_uintptr"
|
|
|
|
|
#define GCC_INTPTR "__gdb_intptr"
|
|
|
|
|
|
|
|
|
|
/* Emit code to push a constant. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
push (int indent, struct ui_file *stream, ULONGEST l)
|
|
|
|
|
{
|
2015-05-16 14:20:45 +02:00
|
|
|
|
fprintfi_filtered (indent, stream,
|
|
|
|
|
"__gdb_stack[++__gdb_tos] = (" GCC_UINTPTR ") %s;\n",
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
hex_string (l));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Emit code to push an arbitrary expression. This works like
|
|
|
|
|
printf. */
|
|
|
|
|
|
2015-02-26 19:29:12 +01:00
|
|
|
|
static void pushf (int indent, struct ui_file *stream, const char *format, ...)
|
|
|
|
|
ATTRIBUTE_PRINTF (3, 4);
|
|
|
|
|
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
static void
|
|
|
|
|
pushf (int indent, struct ui_file *stream, const char *format, ...)
|
|
|
|
|
{
|
|
|
|
|
va_list args;
|
|
|
|
|
|
|
|
|
|
fprintfi_filtered (indent, stream, "__gdb_stack[__gdb_tos + 1] = ");
|
|
|
|
|
va_start (args, format);
|
|
|
|
|
vfprintf_filtered (stream, format, args);
|
|
|
|
|
va_end (args);
|
|
|
|
|
fprintf_filtered (stream, ";\n");
|
|
|
|
|
|
|
|
|
|
fprintfi_filtered (indent, stream, "++__gdb_tos;\n");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Emit code for a unary expression -- one which operates in-place on
|
|
|
|
|
the top-of-stack. This works like printf. */
|
|
|
|
|
|
2015-02-26 19:29:12 +01:00
|
|
|
|
static void unary (int indent, struct ui_file *stream, const char *format, ...)
|
|
|
|
|
ATTRIBUTE_PRINTF (3, 4);
|
|
|
|
|
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
static void
|
|
|
|
|
unary (int indent, struct ui_file *stream, const char *format, ...)
|
|
|
|
|
{
|
|
|
|
|
va_list args;
|
|
|
|
|
|
|
|
|
|
fprintfi_filtered (indent, stream, "__gdb_stack[__gdb_tos] = ");
|
|
|
|
|
va_start (args, format);
|
|
|
|
|
vfprintf_filtered (stream, format, args);
|
|
|
|
|
va_end (args);
|
|
|
|
|
fprintf_filtered (stream, ";\n");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Emit code for a unary expression -- one which uses the top two
|
|
|
|
|
stack items, popping the topmost one. This works like printf. */
|
2015-02-26 19:29:12 +01:00
|
|
|
|
static void binary (int indent, struct ui_file *stream, const char *format, ...)
|
|
|
|
|
ATTRIBUTE_PRINTF (3, 4);
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
binary (int indent, struct ui_file *stream, const char *format, ...)
|
|
|
|
|
{
|
|
|
|
|
va_list args;
|
|
|
|
|
|
|
|
|
|
fprintfi_filtered (indent, stream, "__gdb_stack[__gdb_tos - 1] = ");
|
|
|
|
|
va_start (args, format);
|
|
|
|
|
vfprintf_filtered (stream, format, args);
|
|
|
|
|
va_end (args);
|
|
|
|
|
fprintf_filtered (stream, ";\n");
|
|
|
|
|
fprintfi_filtered (indent, stream, "--__gdb_tos;\n");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Print the name of a label given its "SCOPE", an arbitrary integer
|
|
|
|
|
used for uniqueness, and its TARGET, the bytecode offset
|
|
|
|
|
corresponding to the label's point of definition. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
print_label (struct ui_file *stream, unsigned int scope, int target)
|
|
|
|
|
{
|
|
|
|
|
fprintf_filtered (stream, "__label_%u_%s",
|
|
|
|
|
scope, pulongest (target));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Emit code that pushes a register's address on the stack.
|
|
|
|
|
REGISTERS_USED is an out parameter which is updated to note which
|
|
|
|
|
register was needed by this expression. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
pushf_register_address (int indent, struct ui_file *stream,
|
|
|
|
|
unsigned char *registers_used,
|
|
|
|
|
struct gdbarch *gdbarch, int regnum)
|
|
|
|
|
{
|
|
|
|
|
char *regname = compile_register_name_mangled (gdbarch, regnum);
|
|
|
|
|
struct cleanup *cleanups = make_cleanup (xfree, regname);
|
|
|
|
|
|
|
|
|
|
registers_used[regnum] = 1;
|
2015-05-16 14:20:45 +02:00
|
|
|
|
pushf (indent, stream,
|
|
|
|
|
"(" GCC_UINTPTR ") &" COMPILE_I_SIMPLE_REGISTER_ARG_NAME "->%s",
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
regname);
|
|
|
|
|
|
|
|
|
|
do_cleanups (cleanups);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Emit code that pushes a register's value on the stack.
|
|
|
|
|
REGISTERS_USED is an out parameter which is updated to note which
|
|
|
|
|
register was needed by this expression. OFFSET is added to the
|
|
|
|
|
register's value before it is pushed. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
pushf_register (int indent, struct ui_file *stream,
|
|
|
|
|
unsigned char *registers_used,
|
|
|
|
|
struct gdbarch *gdbarch, int regnum, uint64_t offset)
|
|
|
|
|
{
|
|
|
|
|
char *regname = compile_register_name_mangled (gdbarch, regnum);
|
|
|
|
|
struct cleanup *cleanups = make_cleanup (xfree, regname);
|
|
|
|
|
|
|
|
|
|
registers_used[regnum] = 1;
|
|
|
|
|
if (offset == 0)
|
|
|
|
|
pushf (indent, stream, COMPILE_I_SIMPLE_REGISTER_ARG_NAME "->%s",
|
|
|
|
|
regname);
|
|
|
|
|
else
|
2015-05-16 14:20:45 +02:00
|
|
|
|
pushf (indent, stream,
|
|
|
|
|
COMPILE_I_SIMPLE_REGISTER_ARG_NAME "->%s + (" GCC_UINTPTR ") %s",
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
regname, hex_string (offset));
|
|
|
|
|
|
|
|
|
|
do_cleanups (cleanups);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* Compile a DWARF expression to C code.
|
|
|
|
|
|
|
|
|
|
INDENT is the indentation level to use.
|
|
|
|
|
STREAM is the stream where the code should be written.
|
|
|
|
|
|
|
|
|
|
TYPE_NAME names the type of the result of the DWARF expression.
|
|
|
|
|
For locations this is "void *" but for array bounds it will be an
|
|
|
|
|
integer type.
|
|
|
|
|
|
|
|
|
|
RESULT_NAME is the name of a variable in the resulting C code. The
|
|
|
|
|
result of the expression will be assigned to this variable.
|
|
|
|
|
|
|
|
|
|
SYM is the symbol corresponding to this expression.
|
|
|
|
|
PC is the location at which the expression is being evaluated.
|
|
|
|
|
ARCH is the architecture to use.
|
|
|
|
|
|
|
|
|
|
REGISTERS_USED is an out parameter which is updated to note which
|
|
|
|
|
registers were needed by this expression.
|
|
|
|
|
|
|
|
|
|
ADDR_SIZE is the DWARF address size to use.
|
|
|
|
|
|
|
|
|
|
OPT_PTR and OP_END are the bounds of the DWARF expression.
|
|
|
|
|
|
|
|
|
|
If non-NULL, INITIAL points to an initial value to write to the
|
|
|
|
|
stack. If NULL, no initial value is written.
|
|
|
|
|
|
|
|
|
|
PER_CU is the per-CU object used for looking up various other
|
|
|
|
|
things. */
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
do_compile_dwarf_expr_to_c (int indent, struct ui_file *stream,
|
|
|
|
|
const char *type_name,
|
|
|
|
|
const char *result_name,
|
|
|
|
|
struct symbol *sym, CORE_ADDR pc,
|
|
|
|
|
struct gdbarch *arch,
|
|
|
|
|
unsigned char *registers_used,
|
|
|
|
|
unsigned int addr_size,
|
|
|
|
|
const gdb_byte *op_ptr, const gdb_byte *op_end,
|
|
|
|
|
CORE_ADDR *initial,
|
|
|
|
|
struct dwarf2_per_cu_data *per_cu)
|
|
|
|
|
{
|
|
|
|
|
/* We keep a counter so that labels and other objects we create have
|
|
|
|
|
unique names. */
|
|
|
|
|
static unsigned int scope;
|
|
|
|
|
|
|
|
|
|
enum bfd_endian byte_order = gdbarch_byte_order (arch);
|
|
|
|
|
const gdb_byte * const base = op_ptr;
|
|
|
|
|
int need_tempvar = 0;
|
|
|
|
|
int is_tls = 0;
|
|
|
|
|
struct cleanup *cleanup;
|
|
|
|
|
struct insn_info *info;
|
|
|
|
|
int stack_depth;
|
|
|
|
|
|
|
|
|
|
++scope;
|
|
|
|
|
|
2015-05-16 14:20:45 +02:00
|
|
|
|
fprintfi_filtered (indent, stream, "__attribute__ ((unused)) %s %s;\n",
|
|
|
|
|
type_name, result_name);
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
fprintfi_filtered (indent, stream, "{\n");
|
|
|
|
|
indent += 2;
|
|
|
|
|
|
|
|
|
|
stack_depth = compute_stack_depth (byte_order, addr_size,
|
|
|
|
|
&need_tempvar, &is_tls,
|
|
|
|
|
op_ptr, op_end, initial != NULL,
|
|
|
|
|
&info);
|
|
|
|
|
cleanup = make_cleanup (xfree, info);
|
|
|
|
|
|
|
|
|
|
/* This is a hack until we can add a feature to glibc to let us
|
|
|
|
|
properly generate code for TLS. You might think we could emit
|
|
|
|
|
the address in the ordinary course of translating
|
|
|
|
|
DW_OP_GNU_push_tls_address, but since the operand appears on the
|
|
|
|
|
stack, it is relatively hard to find, and the idea of calling
|
|
|
|
|
target_translate_tls_address with OFFSET==0 and then adding the
|
|
|
|
|
offset by hand seemed too hackish. */
|
|
|
|
|
if (is_tls)
|
|
|
|
|
{
|
|
|
|
|
struct frame_info *frame = get_selected_frame (NULL);
|
|
|
|
|
struct value *val;
|
|
|
|
|
|
|
|
|
|
if (frame == NULL)
|
|
|
|
|
error (_("Symbol \"%s\" cannot be used because "
|
|
|
|
|
"there is no selected frame"),
|
|
|
|
|
SYMBOL_PRINT_NAME (sym));
|
|
|
|
|
|
2015-02-05 17:00:06 +01:00
|
|
|
|
val = read_var_value (sym, NULL, frame);
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
if (VALUE_LVAL (val) != lval_memory)
|
|
|
|
|
error (_("Symbol \"%s\" cannot be used for compilation evaluation "
|
|
|
|
|
"as its address has not been found."),
|
|
|
|
|
SYMBOL_PRINT_NAME (sym));
|
|
|
|
|
|
|
|
|
|
warning (_("Symbol \"%s\" is thread-local and currently can only "
|
|
|
|
|
"be referenced from the current thread in "
|
|
|
|
|
"compiled code."),
|
|
|
|
|
SYMBOL_PRINT_NAME (sym));
|
|
|
|
|
|
|
|
|
|
fprintfi_filtered (indent, stream, "%s = %s;\n",
|
|
|
|
|
result_name,
|
|
|
|
|
core_addr_to_string (value_address (val)));
|
|
|
|
|
fprintfi_filtered (indent - 2, stream, "}\n");
|
|
|
|
|
do_cleanups (cleanup);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fprintfi_filtered (indent, stream, GCC_UINTPTR " __gdb_stack[%d];\n",
|
|
|
|
|
stack_depth);
|
|
|
|
|
|
|
|
|
|
if (need_tempvar)
|
|
|
|
|
fprintfi_filtered (indent, stream, GCC_UINTPTR " __gdb_tmp;\n");
|
|
|
|
|
fprintfi_filtered (indent, stream, "int __gdb_tos = -1;\n");
|
|
|
|
|
|
|
|
|
|
if (initial != NULL)
|
2015-02-26 19:29:12 +01:00
|
|
|
|
pushf (indent, stream, "%s", core_addr_to_string (*initial));
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
|
|
|
|
|
while (op_ptr < op_end)
|
|
|
|
|
{
|
2015-08-06 23:21:41 +02:00
|
|
|
|
enum dwarf_location_atom op = (enum dwarf_location_atom) *op_ptr;
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
uint64_t uoffset, reg;
|
|
|
|
|
int64_t offset;
|
|
|
|
|
|
|
|
|
|
print_spaces (indent - 2, stream);
|
|
|
|
|
if (info[op_ptr - base].label)
|
|
|
|
|
{
|
|
|
|
|
print_label (stream, scope, op_ptr - base);
|
|
|
|
|
fprintf_filtered (stream, ":;");
|
|
|
|
|
}
|
|
|
|
|
fprintf_filtered (stream, "/* %s */\n", get_DW_OP_name (op));
|
|
|
|
|
|
|
|
|
|
/* This is handy for debugging the generated code:
|
|
|
|
|
fprintf_filtered (stream, "if (__gdb_tos != %d) abort ();\n",
|
|
|
|
|
(int) info[op_ptr - base].depth - 1);
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
++op_ptr;
|
|
|
|
|
|
|
|
|
|
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:
|
|
|
|
|
push (indent, stream, op - DW_OP_lit0);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_addr:
|
|
|
|
|
op_ptr += addr_size;
|
|
|
|
|
/* Some versions of GCC emit DW_OP_addr before
|
|
|
|
|
DW_OP_GNU_push_tls_address. In this case the value is an
|
|
|
|
|
index, not an address. We don't support things like
|
|
|
|
|
branching between the address and the TLS op. */
|
|
|
|
|
if (op_ptr >= op_end || *op_ptr != DW_OP_GNU_push_tls_address)
|
|
|
|
|
uoffset += dwarf2_per_cu_text_offset (per_cu);
|
|
|
|
|
push (indent, stream, uoffset);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_const1u:
|
|
|
|
|
push (indent, stream,
|
|
|
|
|
extract_unsigned_integer (op_ptr, 1, byte_order));
|
|
|
|
|
op_ptr += 1;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_const1s:
|
|
|
|
|
push (indent, stream,
|
|
|
|
|
extract_signed_integer (op_ptr, 1, byte_order));
|
|
|
|
|
op_ptr += 1;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_const2u:
|
|
|
|
|
push (indent, stream,
|
|
|
|
|
extract_unsigned_integer (op_ptr, 2, byte_order));
|
|
|
|
|
op_ptr += 2;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_const2s:
|
|
|
|
|
push (indent, stream,
|
|
|
|
|
extract_signed_integer (op_ptr, 2, byte_order));
|
|
|
|
|
op_ptr += 2;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_const4u:
|
|
|
|
|
push (indent, stream,
|
|
|
|
|
extract_unsigned_integer (op_ptr, 4, byte_order));
|
|
|
|
|
op_ptr += 4;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_const4s:
|
|
|
|
|
push (indent, stream,
|
|
|
|
|
extract_signed_integer (op_ptr, 4, byte_order));
|
|
|
|
|
op_ptr += 4;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_const8u:
|
|
|
|
|
push (indent, stream,
|
|
|
|
|
extract_unsigned_integer (op_ptr, 8, byte_order));
|
|
|
|
|
op_ptr += 8;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_const8s:
|
|
|
|
|
push (indent, stream,
|
|
|
|
|
extract_signed_integer (op_ptr, 8, byte_order));
|
|
|
|
|
op_ptr += 8;
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_constu:
|
|
|
|
|
op_ptr = safe_read_uleb128 (op_ptr, op_end, &uoffset);
|
|
|
|
|
push (indent, stream, uoffset);
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_consts:
|
|
|
|
|
op_ptr = safe_read_sleb128 (op_ptr, op_end, &offset);
|
|
|
|
|
push (indent, stream, offset);
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
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:
|
|
|
|
|
dwarf_expr_require_composition (op_ptr, op_end, "DW_OP_regx");
|
|
|
|
|
pushf_register_address (indent, stream, registers_used, arch,
|
2015-10-27 00:05:21 +01:00
|
|
|
|
dwarf_reg_to_regnum_or_error
|
|
|
|
|
(arch, op - DW_OP_reg0));
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_regx:
|
|
|
|
|
op_ptr = safe_read_uleb128 (op_ptr, op_end, ®);
|
|
|
|
|
dwarf_expr_require_composition (op_ptr, op_end, "DW_OP_regx");
|
|
|
|
|
pushf_register_address (indent, stream, registers_used, arch,
|
2015-10-27 00:05:21 +01:00
|
|
|
|
dwarf_reg_to_regnum_or_error (arch, reg));
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
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 = safe_read_sleb128 (op_ptr, op_end, &offset);
|
|
|
|
|
pushf_register (indent, stream, registers_used, arch,
|
2015-10-27 00:05:21 +01:00
|
|
|
|
dwarf_reg_to_regnum_or_error (arch,
|
|
|
|
|
op - DW_OP_breg0),
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
offset);
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_bregx:
|
|
|
|
|
{
|
|
|
|
|
op_ptr = safe_read_uleb128 (op_ptr, op_end, ®);
|
|
|
|
|
op_ptr = safe_read_sleb128 (op_ptr, op_end, &offset);
|
|
|
|
|
pushf_register (indent, stream, registers_used, arch,
|
2015-10-27 00:05:21 +01:00
|
|
|
|
dwarf_reg_to_regnum_or_error (arch, reg), offset);
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case DW_OP_fbreg:
|
|
|
|
|
{
|
|
|
|
|
const gdb_byte *datastart;
|
|
|
|
|
size_t datalen;
|
|
|
|
|
const struct block *b;
|
|
|
|
|
struct symbol *framefunc;
|
|
|
|
|
char fb_name[50];
|
|
|
|
|
|
|
|
|
|
b = block_for_pc (pc);
|
|
|
|
|
|
|
|
|
|
if (!b)
|
|
|
|
|
error (_("No block found for address"));
|
|
|
|
|
|
|
|
|
|
framefunc = block_linkage_function (b);
|
|
|
|
|
|
|
|
|
|
if (!framefunc)
|
|
|
|
|
error (_("No function found for block"));
|
|
|
|
|
|
|
|
|
|
func_get_frame_base_dwarf_block (framefunc, pc,
|
|
|
|
|
&datastart, &datalen);
|
|
|
|
|
|
|
|
|
|
op_ptr = safe_read_sleb128 (op_ptr, op_end, &offset);
|
|
|
|
|
|
|
|
|
|
/* Generate a unique-enough name, in case the frame base
|
|
|
|
|
is computed multiple times in this expression. */
|
|
|
|
|
xsnprintf (fb_name, sizeof (fb_name), "__frame_base_%ld",
|
|
|
|
|
(long) (op_ptr - base));
|
|
|
|
|
|
|
|
|
|
do_compile_dwarf_expr_to_c (indent, stream,
|
2015-05-16 14:20:45 +02:00
|
|
|
|
GCC_UINTPTR, fb_name,
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
sym, pc,
|
|
|
|
|
arch, registers_used, addr_size,
|
|
|
|
|
datastart, datastart + datalen,
|
|
|
|
|
NULL, per_cu);
|
|
|
|
|
|
|
|
|
|
pushf (indent, stream, "%s + %s", fb_name, hex_string (offset));
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_dup:
|
|
|
|
|
pushf (indent, stream, "__gdb_stack[__gdb_tos]");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_drop:
|
|
|
|
|
fprintfi_filtered (indent, stream, "--__gdb_tos;\n");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_pick:
|
|
|
|
|
offset = *op_ptr++;
|
2015-02-26 19:29:12 +01:00
|
|
|
|
pushf (indent, stream, "__gdb_stack[__gdb_tos - %s]",
|
|
|
|
|
plongest (offset));
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_swap:
|
|
|
|
|
fprintfi_filtered (indent, stream,
|
|
|
|
|
"__gdb_tmp = __gdb_stack[__gdb_tos - 1];\n");
|
|
|
|
|
fprintfi_filtered (indent, stream,
|
|
|
|
|
"__gdb_stack[__gdb_tos - 1] = "
|
|
|
|
|
"__gdb_stack[__gdb_tos];\n");
|
|
|
|
|
fprintfi_filtered (indent, stream, ("__gdb_stack[__gdb_tos] = "
|
|
|
|
|
"__gdb_tmp;\n"));
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_over:
|
|
|
|
|
pushf (indent, stream, "__gdb_stack[__gdb_tos - 1]");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_rot:
|
|
|
|
|
fprintfi_filtered (indent, stream, ("__gdb_tmp = "
|
|
|
|
|
"__gdb_stack[__gdb_tos];\n"));
|
|
|
|
|
fprintfi_filtered (indent, stream,
|
|
|
|
|
"__gdb_stack[__gdb_tos] = "
|
|
|
|
|
"__gdb_stack[__gdb_tos - 1];\n");
|
|
|
|
|
fprintfi_filtered (indent, stream,
|
|
|
|
|
"__gdb_stack[__gdb_tos - 1] = "
|
|
|
|
|
"__gdb_stack[__gdb_tos -2];\n");
|
|
|
|
|
fprintfi_filtered (indent, stream, "__gdb_stack[__gdb_tos - 2] = "
|
|
|
|
|
"__gdb_tmp;\n");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_deref:
|
|
|
|
|
case DW_OP_deref_size:
|
|
|
|
|
{
|
|
|
|
|
int size;
|
|
|
|
|
const char *mode;
|
|
|
|
|
|
|
|
|
|
if (op == DW_OP_deref_size)
|
|
|
|
|
size = *op_ptr++;
|
|
|
|
|
else
|
|
|
|
|
size = addr_size;
|
|
|
|
|
|
|
|
|
|
mode = c_get_mode_for_size (size);
|
|
|
|
|
if (mode == NULL)
|
|
|
|
|
error (_("Unsupported size %d in %s"),
|
|
|
|
|
size, get_DW_OP_name (op));
|
|
|
|
|
|
|
|
|
|
/* Cast to a pointer of the desired type, then
|
|
|
|
|
dereference. */
|
|
|
|
|
fprintfi_filtered (indent, stream,
|
|
|
|
|
"__gdb_stack[__gdb_tos] = "
|
|
|
|
|
"*((__gdb_int_%s *) "
|
|
|
|
|
"__gdb_stack[__gdb_tos]);\n",
|
|
|
|
|
mode);
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_abs:
|
|
|
|
|
unary (indent, stream,
|
|
|
|
|
"((" GCC_INTPTR ") __gdb_stack[__gdb_tos]) < 0 ? "
|
|
|
|
|
"-__gdb_stack[__gdb_tos] : __gdb_stack[__gdb_tos]");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_neg:
|
|
|
|
|
unary (indent, stream, "-__gdb_stack[__gdb_tos]");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_not:
|
|
|
|
|
unary (indent, stream, "~__gdb_stack[__gdb_tos]");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_plus_uconst:
|
|
|
|
|
op_ptr = safe_read_uleb128 (op_ptr, op_end, ®);
|
|
|
|
|
unary (indent, stream, "__gdb_stack[__gdb_tos] + %s",
|
|
|
|
|
hex_string (reg));
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_div:
|
|
|
|
|
binary (indent, stream, ("((" GCC_INTPTR
|
|
|
|
|
") __gdb_stack[__gdb_tos-1]) / (("
|
|
|
|
|
GCC_INTPTR ") __gdb_stack[__gdb_tos])"));
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_shra:
|
|
|
|
|
binary (indent, stream,
|
|
|
|
|
"((" GCC_INTPTR ") __gdb_stack[__gdb_tos-1]) >> "
|
|
|
|
|
"__gdb_stack[__gdb_tos]");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
#define BINARY(OP) \
|
2015-02-26 19:29:12 +01:00
|
|
|
|
binary (indent, stream, "%s", "__gdb_stack[__gdb_tos-1] " #OP \
|
|
|
|
|
" __gdb_stack[__gdb_tos]"); \
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
break
|
|
|
|
|
|
|
|
|
|
case DW_OP_and:
|
|
|
|
|
BINARY (&);
|
|
|
|
|
case DW_OP_minus:
|
|
|
|
|
BINARY (-);
|
|
|
|
|
case DW_OP_mod:
|
|
|
|
|
BINARY (%);
|
|
|
|
|
case DW_OP_mul:
|
|
|
|
|
BINARY (*);
|
|
|
|
|
case DW_OP_or:
|
|
|
|
|
BINARY (|);
|
|
|
|
|
case DW_OP_plus:
|
|
|
|
|
BINARY (+);
|
|
|
|
|
case DW_OP_shl:
|
|
|
|
|
BINARY (<<);
|
|
|
|
|
case DW_OP_shr:
|
|
|
|
|
BINARY (>>);
|
|
|
|
|
case DW_OP_xor:
|
|
|
|
|
BINARY (^);
|
|
|
|
|
#undef BINARY
|
|
|
|
|
|
|
|
|
|
#define COMPARE(OP) \
|
|
|
|
|
binary (indent, stream, \
|
|
|
|
|
"(((" GCC_INTPTR ") __gdb_stack[__gdb_tos-1]) " #OP \
|
|
|
|
|
" ((" GCC_INTPTR \
|
|
|
|
|
") __gdb_stack[__gdb_tos]))"); \
|
|
|
|
|
break
|
|
|
|
|
|
|
|
|
|
case DW_OP_le:
|
|
|
|
|
COMPARE (<=);
|
|
|
|
|
case DW_OP_ge:
|
|
|
|
|
COMPARE (>=);
|
|
|
|
|
case DW_OP_eq:
|
|
|
|
|
COMPARE (==);
|
|
|
|
|
case DW_OP_lt:
|
|
|
|
|
COMPARE (<);
|
|
|
|
|
case DW_OP_gt:
|
|
|
|
|
COMPARE (>);
|
|
|
|
|
case DW_OP_ne:
|
|
|
|
|
COMPARE (!=);
|
|
|
|
|
#undef COMPARE
|
|
|
|
|
|
|
|
|
|
case DW_OP_call_frame_cfa:
|
|
|
|
|
{
|
|
|
|
|
int regnum;
|
|
|
|
|
CORE_ADDR text_offset;
|
|
|
|
|
LONGEST off;
|
|
|
|
|
const gdb_byte *cfa_start, *cfa_end;
|
|
|
|
|
|
|
|
|
|
if (dwarf2_fetch_cfa_info (arch, pc, per_cu,
|
|
|
|
|
®num, &off,
|
|
|
|
|
&text_offset, &cfa_start, &cfa_end))
|
|
|
|
|
{
|
|
|
|
|
/* Register. */
|
|
|
|
|
pushf_register (indent, stream, registers_used, arch, regnum,
|
|
|
|
|
off);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
/* Another expression. */
|
|
|
|
|
char cfa_name[50];
|
|
|
|
|
|
|
|
|
|
/* Generate a unique-enough name, in case the CFA is
|
|
|
|
|
computed multiple times in this expression. */
|
|
|
|
|
xsnprintf (cfa_name, sizeof (cfa_name),
|
|
|
|
|
"__cfa_%ld", (long) (op_ptr - base));
|
|
|
|
|
|
|
|
|
|
do_compile_dwarf_expr_to_c (indent, stream,
|
2015-05-16 14:20:45 +02:00
|
|
|
|
GCC_UINTPTR, cfa_name,
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
sym, pc, arch, registers_used,
|
|
|
|
|
addr_size,
|
|
|
|
|
cfa_start, cfa_end,
|
|
|
|
|
&text_offset, per_cu);
|
2015-02-26 19:29:12 +01:00
|
|
|
|
pushf (indent, stream, "%s", cfa_name);
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_skip:
|
|
|
|
|
offset = extract_signed_integer (op_ptr, 2, byte_order);
|
|
|
|
|
op_ptr += 2;
|
|
|
|
|
fprintfi_filtered (indent, stream, "goto ");
|
|
|
|
|
print_label (stream, scope, op_ptr + offset - base);
|
|
|
|
|
fprintf_filtered (stream, ";\n");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_bra:
|
|
|
|
|
offset = extract_signed_integer (op_ptr, 2, byte_order);
|
|
|
|
|
op_ptr += 2;
|
|
|
|
|
fprintfi_filtered (indent, stream,
|
|
|
|
|
"if ((( " GCC_INTPTR
|
|
|
|
|
") __gdb_stack[__gdb_tos--]) != 0) goto ");
|
|
|
|
|
print_label (stream, scope, op_ptr + offset - base);
|
|
|
|
|
fprintf_filtered (stream, ";\n");
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
case DW_OP_nop:
|
|
|
|
|
break;
|
|
|
|
|
|
|
|
|
|
default:
|
|
|
|
|
error (_("unhandled DWARF op: %s"), get_DW_OP_name (op));
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
2015-05-16 14:20:45 +02:00
|
|
|
|
fprintfi_filtered (indent, stream, "%s = __gdb_stack[__gdb_tos];\n",
|
|
|
|
|
result_name);
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
fprintfi_filtered (indent - 2, stream, "}\n");
|
|
|
|
|
|
|
|
|
|
do_cleanups (cleanup);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* See compile.h. */
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
compile_dwarf_expr_to_c (struct ui_file *stream, const char *result_name,
|
|
|
|
|
struct symbol *sym, CORE_ADDR pc,
|
|
|
|
|
struct gdbarch *arch, unsigned char *registers_used,
|
|
|
|
|
unsigned int addr_size,
|
|
|
|
|
const gdb_byte *op_ptr, const gdb_byte *op_end,
|
|
|
|
|
struct dwarf2_per_cu_data *per_cu)
|
|
|
|
|
{
|
2015-05-16 14:20:45 +02:00
|
|
|
|
do_compile_dwarf_expr_to_c (2, stream, GCC_UINTPTR, result_name, sym, pc,
|
the "compile" command
This final patch adds the new "compile" command and subcommands, and
all the machinery needed to make it work.
A shared library supplied by gcc is used for all communications with
gcc. Types and most aspects of symbols are provided directly by gdb
to the compiler using this library.
gdb provides some information about the user's code using plain text.
Macros are emitted this way, and DWARF location expressions (and
bounds for VLA) are compiled to C code.
This hybrid approach was taken because, on the one hand, it is better
to provide global declarations and such on demand; but on the other
hand, for local variables, translating DWARF location expressions to C
was much simpler than exporting a full compiler API to gdb -- the same
result, only easier to implement, understand, and debug.
In the ordinary mode, the user's expression is wrapped in a dummy
function. After compilation, gdb inserts the resulting object code
into the inferior, then calls this function.
Access to local variables is provided by noting which registers are
used by location expressions, and passing a structure of register
values into the function. Writes to registers are supported by
copying out these values after the function returns.
This approach was taken so that we could eventually implement other
more interesting features based on this same infrastructure; for
example, we're planning to investigate inferior-side breakpoint
conditions.
gdb/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* NEWS: Update.
* symtab.h (struct symbol_computed_ops) <generate_c_location>: New
field.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn) <la_get_compile_instance,
la_compute_program>: New fields.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* jv-lang.c (java_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* dwarf2loc.h (dwarf2_compile_property_to_c): Declare.
* dwarf2loc.c (dwarf2_compile_property_to_c)
(locexpr_generate_c_location, loclist_generate_c_location): New
functions.
(dwarf2_locexpr_funcs, dwarf2_loclist_funcs): Update.
* defs.h (enum compile_i_scope_types): New.
(enum command_control_type) <compile_control>: New constant.
(struct command_line) <control_u>: New field.
* d-lang.c (d_language_defn): Update.
* compile/compile.c: New file.
* compile/compile-c-support.c: New file.
* compile/compile-c-symbols.c: New file.
* compile/compile-c-types.c: New file.
* compile/compile.h: New file.
* compile/compile-internal.h: New file.
* compile/compile-loc2c.c: New file.
* compile/compile-object-load.c: New file.
* compile/compile-object-load.h: New file.
* compile/compile-object-run.c: New file.
* compile/compile-object-run.h: New file.
* cli/cli-script.c (multi_line_command_p, print_command_lines)
(execute_control_command, process_next_line)
(recurse_read_control_structure): Handle compile_control.
* c-lang.h (c_get_compile_context, c_compute_program): Declare.
* c-lang.c (c_language_defn, cplus_language_defn)
(asm_language_defn, minimal_language_defn): Update.
* ada-lang.c (ada_language_defn): Update.
* Makefile.in (SUBDIR_GCC_COMPILE_OBS, SUBDIR_GCC_COMPILE_SRCS):
New variables.
(SFILES): Add SUBDIR_GCC_COMPILE_SRCS.
(HFILES_NO_SRCDIR): Add compile.h.
(COMMON_OBS): Add SUBDIR_GCC_COMPILE_OBS.
(INIT_FILES): Add SUBDIR_GCC_COMPILE_SRCS.
(compile.o, compile-c-types.o, compile-c-symbols.o)
(compile-object-load.o, compile-object-run.o, compile-loc2c.o)
(compile-c-support.o): New targets.
gdb/doc/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.texinfo (Altering): Update.
(Compiling and Injecting Code): New node.
gdb/testsuite/ChangeLog
2014-12-12 Phil Muldoon <pmuldoon@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
Tom Tromey <tromey@redhat.com>
* configure.ac: Add gdb.compile/.
* configure: Regenerate.
* gdb.compile/Makefile.in: New file.
* gdb.compile/compile-ops.exp: New file.
* gdb.compile/compile-ops.c: New file.
* gdb.compile/compile-tls.c: New file.
* gdb.compile/compile-tls.exp: New file.
* gdb.compile/compile-constvar.S: New file.
* gdb.compile/compile-constvar.c: New file.
* gdb.compile/compile-mod.c: New file.
* gdb.compile/compile-nodebug.c: New file.
* gdb.compile/compile-setjmp-mod.c: New file.
* gdb.compile/compile-setjmp.c: New file.
* gdb.compile/compile-setjmp.exp: New file.
* gdb.compile/compile-shlib.c: New file.
* gdb.compile/compile.c: New file.
* gdb.compile/compile.exp: New file.
* lib/gdb.exp (skip_compile_feature_tests): New proc.
2014-05-14 22:35:45 +02:00
|
|
|
|
arch, registers_used, addr_size, op_ptr, op_end,
|
|
|
|
|
NULL, per_cu);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* See compile.h. */
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
|
compile_dwarf_bounds_to_c (struct ui_file *stream,
|
|
|
|
|
const char *result_name,
|
|
|
|
|
const struct dynamic_prop *prop,
|
|
|
|
|
struct symbol *sym, CORE_ADDR pc,
|
|
|
|
|
struct gdbarch *arch, unsigned char *registers_used,
|
|
|
|
|
unsigned int addr_size,
|
|
|
|
|
const gdb_byte *op_ptr, const gdb_byte *op_end,
|
|
|
|
|
struct dwarf2_per_cu_data *per_cu)
|
|
|
|
|
{
|
|
|
|
|
do_compile_dwarf_expr_to_c (2, stream, "unsigned long ", result_name,
|
|
|
|
|
sym, pc, arch, registers_used,
|
|
|
|
|
addr_size, op_ptr, op_end, NULL, per_cu);
|
|
|
|
|
}
|