| /* Copyright (C) 2012-2024 Free Software Foundation, Inc. |
| |
| This file is part of GDB. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 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 "tdesc.h" |
| #include "regdef.h" |
| |
| #ifndef IN_PROCESS_AGENT |
| |
| target_desc::~target_desc () |
| { |
| xfree ((char *) arch); |
| xfree ((char *) osabi); |
| } |
| |
| bool target_desc::operator== (const target_desc &other) const |
| { |
| if (reg_defs != other.reg_defs) |
| return false; |
| |
| /* Compare the two vectors of expedited registers. They will only match |
| if the following conditions are met: |
| |
| - Both vectors have the same number of elements. |
| - Both vectors contain the same elements. |
| - The elements of both vectors appear in the same order. */ |
| if (expedite_regs != other.expedite_regs) |
| return false; |
| |
| return true; |
| } |
| |
| #endif |
| |
| void target_desc::accept (tdesc_element_visitor &v) const |
| { |
| #ifndef IN_PROCESS_AGENT |
| v.visit_pre (this); |
| |
| for (const tdesc_feature_up &feature : features) |
| feature->accept (v); |
| |
| v.visit_post (this); |
| #endif |
| } |
| |
| void |
| init_target_desc (struct target_desc *tdesc, |
| const char **expedite_regs) |
| { |
| int offset = 0; |
| |
| /* Go through all the features and populate reg_defs. */ |
| for (const tdesc_feature_up &feature : tdesc->features) |
| for (const tdesc_reg_up &treg : feature->registers) |
| { |
| int regnum = treg->target_regnum; |
| |
| /* Register number will increase (possibly with gaps) or be zero. */ |
| gdb_assert (regnum == 0 || regnum >= tdesc->reg_defs.size ()); |
| |
| if (regnum != 0) |
| tdesc->reg_defs.resize (regnum, gdb::reg (offset)); |
| |
| tdesc->reg_defs.emplace_back (treg->name.c_str (), offset, |
| treg->bitsize); |
| offset += treg->bitsize; |
| } |
| |
| tdesc->registers_size = offset / 8; |
| |
| /* Make sure PBUFSIZ is large enough to hold a full register |
| packet. */ |
| gdb_assert (2 * tdesc->registers_size + 32 <= PBUFSIZ); |
| |
| #ifndef IN_PROCESS_AGENT |
| /* Drop the contents of the previous vector, if any. */ |
| tdesc->expedite_regs.clear (); |
| |
| /* Initialize the vector with new expedite registers contents. */ |
| int expedite_count = 0; |
| while (expedite_regs[expedite_count] != nullptr) |
| tdesc->expedite_regs.push_back (expedite_regs[expedite_count++]); |
| #endif |
| } |
| |
| /* See gdbsupport/tdesc.h. */ |
| |
| target_desc_up |
| allocate_target_description (void) |
| { |
| return target_desc_up (new target_desc ()); |
| } |
| |
| /* See gdbsupport/tdesc.h. */ |
| |
| void |
| target_desc_deleter::operator() (struct target_desc *target_desc) const |
| { |
| delete target_desc; |
| } |
| |
| #ifndef IN_PROCESS_AGENT |
| |
| static const struct target_desc default_description {}; |
| |
| void |
| copy_target_description (struct target_desc *dest, |
| const struct target_desc *src) |
| { |
| dest->reg_defs = src->reg_defs; |
| dest->expedite_regs = src->expedite_regs; |
| dest->registers_size = src->registers_size; |
| dest->xmltarget = src->xmltarget; |
| } |
| |
| const struct target_desc * |
| current_target_desc (void) |
| { |
| if (current_thread == NULL) |
| return &default_description; |
| |
| return current_process ()->tdesc; |
| } |
| |
| /* An empty structure. */ |
| |
| struct tdesc_compatible_info { }; |
| |
| /* See gdbsupport/tdesc.h. */ |
| |
| const std::vector<tdesc_compatible_info_up> & |
| tdesc_compatible_info_list (const target_desc *target_desc) |
| { |
| static std::vector<tdesc_compatible_info_up> empty; |
| return empty; |
| } |
| |
| /* See gdbsupport/tdesc.h. */ |
| |
| const char * |
| tdesc_compatible_info_arch_name (const tdesc_compatible_info_up &c_info) |
| { |
| return nullptr; |
| } |
| |
| /* See gdbsupport/tdesc.h. */ |
| |
| const char * |
| tdesc_architecture_name (const struct target_desc *target_desc) |
| { |
| return target_desc->arch; |
| } |
| |
| /* See gdbsupport/tdesc.h. */ |
| |
| void |
| set_tdesc_architecture (struct target_desc *target_desc, |
| const char *name) |
| { |
| target_desc->arch = xstrdup (name); |
| } |
| |
| /* See gdbsupport/tdesc.h. */ |
| |
| const char * |
| tdesc_osabi_name (const struct target_desc *target_desc) |
| { |
| return target_desc->osabi; |
| } |
| |
| /* See gdbsupport/tdesc.h. */ |
| |
| void |
| set_tdesc_osabi (struct target_desc *target_desc, const char *name) |
| { |
| target_desc->osabi = xstrdup (name); |
| } |
| |
| /* See gdbsupport/tdesc.h. */ |
| |
| const char * |
| tdesc_get_features_xml (const target_desc *tdesc) |
| { |
| /* Either .xmltarget or .features is not NULL. */ |
| gdb_assert (tdesc->xmltarget != NULL |
| || (!tdesc->features.empty () |
| && tdesc->arch != NULL)); |
| |
| if (tdesc->xmltarget == NULL) |
| { |
| std::string buffer ("@"); |
| print_xml_feature v (&buffer); |
| tdesc->accept (v); |
| tdesc->xmltarget = xstrdup (buffer.c_str ()); |
| } |
| |
| return tdesc->xmltarget; |
| } |
| #endif |
| |
| /* See gdbsupport/tdesc.h. */ |
| |
| struct tdesc_feature * |
| tdesc_create_feature (struct target_desc *tdesc, const char *name) |
| { |
| struct tdesc_feature *new_feature = new tdesc_feature (name); |
| tdesc->features.emplace_back (new_feature); |
| return new_feature; |
| } |
| |
| /* See gdbsupport/tdesc.h. */ |
| |
| bool |
| tdesc_contains_feature (const target_desc *tdesc, const std::string &feature) |
| { |
| gdb_assert (tdesc != nullptr); |
| |
| for (const tdesc_feature_up &f : tdesc->features) |
| { |
| if (f->name == feature) |
| return true; |
| } |
| |
| return false; |
| } |