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It is planned the existing GDB command 'print' will be able to evaluate its expressions using the compiler. There will be some option to choose between the existing GDB evaluation and the compiler evaluation. But as an intermediate step this patch provides the expression printing feature as a new command. I can imagine it could be also called 'maintenance compile print' as in the future one should be able to use its functionality by the normal 'print' command. There was a discussion with Eli about the command name: https://sourceware.org/ml/gdb-patches/2015-03/msg00880.html As there were no other comments yet I haven't renamed it yet, before there is some confirmation about settlement on the final name. Support for the GDB '@' operator to create arrays has been submitted for GCC: [gcc patch] libcc1: '@' GDB array operator https://gcc.gnu.org/ml/gcc-patches/2015-03/msg01451.html gdb/ChangeLog 2015-05-16 Jan Kratochvil <jan.kratochvil@redhat.com> Phil Muldoon <pmuldoon@redhat.com> * NEWS (Changes since GDB 7.9): Add compile print. * compile/compile-c-support.c (add_code_header, add_code_footer) (c_compute_program): Add COMPILE_I_PRINT_ADDRESS_SCOPE and COMPILE_I_PRINT_VALUE_SCOPE. * compile/compile-internal.h (COMPILE_I_PRINT_OUT_ARG_TYPE) (COMPILE_I_PRINT_OUT_ARG, COMPILE_I_EXPR_VAL, COMPILE_I_EXPR_PTR_TYPE): New. * compile/compile-object-load.c: Include block.h. (get_out_value_type): New function. (compile_object_load): Handle COMPILE_I_PRINT_ADDRESS_SCOPE and COMPILE_I_PRINT_VALUE_SCOPE. Set compile_module's OUT_VALUE_ADDR and OUT_VALUE_TYPE. * compile/compile-object-load.h (struct compile_module): Add fields out_value_addr and out_value_type. * compile/compile-object-run.c: Include valprint.h and compile.h. (struct do_module_cleanup): Add fields out_value_addr and out_value_type. (do_module_cleanup): Handle COMPILE_I_PRINT_ADDRESS_SCOPE and COMPILE_I_PRINT_VALUE_SCOPE. (compile_object_run): Propagate out_value_addr and out_value_type. Pass OUT_VALUE_ADDR. * compile/compile.c: Include valprint.h. (compile_print_value, compile_print_command): New functions. (eval_compile_command): Handle failed COMPILE_I_PRINT_ADDRESS_SCOPE. (_initialize_compile): Update compile code help text. Install compile_print_command. * compile/compile.h (compile_print_value): New prototype. * defs.h (enum compile_i_scope_types): Add COMPILE_I_PRINT_ADDRESS_SCOPE and COMPILE_I_PRINT_VALUE_SCOPE. gdb/doc/ChangeLog 2015-05-16 Jan Kratochvil <jan.kratochvil@redhat.com> * gdb.texinfo (Compiling and Injecting Code): Add compile print. gdb/testsuite/ChangeLog 2015-05-16 Jan Kratochvil <jan.kratochvil@redhat.com> * gdb.compile/compile-print.c: New file. * gdb.compile/compile-print.exp: New file.
107 lines
3.5 KiB
C
107 lines
3.5 KiB
C
/* Header file for Compile and inject module.
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Copyright (C) 2014-2015 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef GDB_COMPILE_H
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#define GDB_COMPILE_H
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struct ui_file;
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struct gdbarch;
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struct dwarf2_per_cu_data;
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struct symbol;
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struct dynamic_prop;
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/* Public function that is called from compile_control case in the
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expression command. GDB returns either a CMD, or a CMD_STRING, but
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never both. */
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extern void eval_compile_command (struct command_line *cmd,
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const char *cmd_string,
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enum compile_i_scope_types scope,
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void *scope_data);
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/* Compile a DWARF location expression to C, suitable for use by the
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compiler.
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STREAM is the stream where the code should be written.
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RESULT_NAME is the name of a variable in the resulting C code. The
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result of the expression will be assigned to this variable.
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SYM is the symbol corresponding to this expression.
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PC is the location at which the expression is being evaluated.
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ARCH is the architecture to use.
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REGISTERS_USED is an out parameter which is updated to note which
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registers were needed by this expression.
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ADDR_SIZE is the DWARF address size to use.
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OPT_PTR and OP_END are the bounds of the DWARF expression.
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PER_CU is the per-CU object used for looking up various other
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things. */
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extern void compile_dwarf_expr_to_c (struct ui_file *stream,
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const char *result_name,
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struct symbol *sym,
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CORE_ADDR pc,
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struct gdbarch *arch,
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unsigned char *registers_used,
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unsigned int addr_size,
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const gdb_byte *op_ptr,
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const gdb_byte *op_end,
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struct dwarf2_per_cu_data *per_cu);
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/* Compile a DWARF bounds expression to C, suitable for use by the
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compiler.
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STREAM is the stream where the code should be written.
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RESULT_NAME is the name of a variable in the resulting C code. The
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result of the expression will be assigned to this variable.
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PROP is the dynamic property for which we're compiling.
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SYM is the symbol corresponding to this expression.
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PC is the location at which the expression is being evaluated.
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ARCH is the architecture to use.
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REGISTERS_USED is an out parameter which is updated to note which
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registers were needed by this expression.
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ADDR_SIZE is the DWARF address size to use.
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OPT_PTR and OP_END are the bounds of the DWARF expression.
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PER_CU is the per-CU object used for looking up various other
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things. */
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extern void compile_dwarf_bounds_to_c (struct ui_file *stream,
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const char *result_name,
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const struct dynamic_prop *prop,
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struct symbol *sym, CORE_ADDR pc,
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struct gdbarch *arch,
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unsigned char *registers_used,
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unsigned int addr_size,
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const gdb_byte *op_ptr,
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const gdb_byte *op_end,
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struct dwarf2_per_cu_data *per_cu);
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extern void compile_print_value (struct value *val, void *data_voidp);
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#endif /* GDB_COMPILE_H */
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