206c98a650
NetBSD and OpenBSD always use an int to store the type as defined in the SVR4 psABI specifications rather than long as assumed by the default parser. Define svr4_auxv_parse() that shares code with default_auxv_parse(). Remove obsd_auxv_parse() and switch OpenBSD to svr4_auxv_parse(). Remove not fully accurate comment from obsd-tdep.c. Use svr4_auxv_parse() on NetBSD. gdb/ChangeLog: * auxv.h (svr4_auxv_parse): New. * auxv.c (default_auxv_parse): Split into default_auxv_parse and generic_auxv_parse. (svr4_auxv_parse): Add. * obsd-tdep.c: Include "auxv.h". (obsd_auxv_parse): Remove. (obsd_init_abi): Remove comment. (obsd_init_abi): Change set_gdbarch_auxv_parse passed argument from `obsd_auxv_parse' to `svr4_auxv_parse'. * nbsd-tdep.c: Include "auxv.h". (nbsd_init_abi): Call set_gdbarch_auxv_parse.
84 lines
3.3 KiB
C
84 lines
3.3 KiB
C
/* Auxiliary vector support for GDB, the GNU debugger.
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Copyright (C) 2004-2020 Free Software Foundation, Inc.
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This file is part of GDB.
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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 AUXV_H
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#define AUXV_H
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#include "target.h"
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/* See "include/elf/common.h" for the definition of valid AT_* values. */
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/* The default implementation of to_auxv_parse, used by the target
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stack.
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Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
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Return 0 if *READPTR is already at the end of the buffer.
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Return -1 if there is insufficient buffer for a whole entry.
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Return 1 if an entry was read into *TYPEP and *VALP. */
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extern int default_auxv_parse (struct target_ops *ops, gdb_byte **readptr,
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gdb_byte *endptr, CORE_ADDR *typep,
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CORE_ADDR *valp);
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/* The SVR4 psABI implementation of to_auxv_parse, that uses an int to
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store the type rather than long as assumed by the default parser.
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Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
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Return 0 if *READPTR is already at the end of the buffer.
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Return -1 if there is insufficient buffer for a whole entry.
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Return 1 if an entry was read into *TYPEP and *VALP. */
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extern int svr4_auxv_parse (struct gdbarch *gdbarch, gdb_byte **readptr,
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gdb_byte *endptr, CORE_ADDR *typep,
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CORE_ADDR *valp);
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/* Read one auxv entry from *READPTR, not reading locations >= ENDPTR.
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Return 0 if *READPTR is already at the end of the buffer.
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Return -1 if there is insufficient buffer for a whole entry.
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Return 1 if an entry was read into *TYPEP and *VALP. */
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extern int target_auxv_parse (gdb_byte **readptr, gdb_byte *endptr,
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CORE_ADDR *typep, CORE_ADDR *valp);
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/* Extract the auxiliary vector entry with a_type matching MATCH.
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Return zero if no such entry was found, or -1 if there was
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an error getting the information. On success, return 1 after
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storing the entry's value field in *VALP. */
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extern int target_auxv_search (struct target_ops *ops,
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CORE_ADDR match, CORE_ADDR *valp);
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/* Print a description of a single AUXV entry on the specified file. */
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enum auxv_format { AUXV_FORMAT_DEC, AUXV_FORMAT_HEX, AUXV_FORMAT_STR };
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extern void fprint_auxv_entry (struct ui_file *file, const char *name,
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const char *description,
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enum auxv_format format, CORE_ADDR type,
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CORE_ADDR val);
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/* The default implementation of gdbarch_print_auxv_entry. */
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extern void default_print_auxv_entry (struct gdbarch *gdbarch,
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struct ui_file *file, CORE_ADDR type,
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CORE_ADDR val);
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/* Print the contents of the target's AUXV on the specified file. */
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extern int fprint_target_auxv (struct ui_file *file, struct target_ops *ops);
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extern target_xfer_partial_ftype memory_xfer_auxv;
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#endif
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