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481695ed5f
binutils-gdb/gdb/nds32-tdep.c
John Baldwin 481695ed5f Remove unnecessary function prototypes. 
These prototypes were required when compiling GDB as C but are not
required for C++.

gdb/ChangeLog:

	* aarch64-linux-nat.c: Remove _initialize_aarch64_linux_nat
	prototype.
	* aarch64-linux-tdep.c: Remove _initialize_aarch64_linux_tdep
	prototype.
	* aarch64-newlib-tdep.c: Remove _initialize_aarch64_newlib_tdep
	prototype.
	* aarch64-tdep.c: Remove _initialize_aarch64_tdep prototype.
	* ada-exp.y: Remove _initialize_ada_exp prototype.
	* ada-lang.c: Remove _initialize_ada_language prototype.
	* ada-tasks.c: Remove _initialize_tasks prototype.
	* addrmap.c: Remove _initialize_addrmap prototype.
	* agent.c: Remove _initialize_agent prototype.
	* aix-thread.c: Remove _initialize_aix_thread prototype.
	* alpha-bsd-nat.c: Remove _initialize_alphabsd_nat prototype.
	* alpha-linux-nat.c: Remove _initialize_alpha_linux_nat prototype.
	* alpha-linux-tdep.c: Remove _initialize_alpha_linux_tdep
	prototype.
	* alpha-nbsd-tdep.c: Remove _initialize_alphanbsd_tdep prototype.
	* alpha-obsd-tdep.c: Remove _initialize_alphaobsd_tdep prototype.
	* alpha-tdep.c: Remove _initialize_alpha_tdep prototype.
	* amd64-darwin-tdep.c: Remove _initialize_amd64_darwin_tdep
	prototype.
	* amd64-dicos-tdep.c: Remove _initialize_amd64_dicos_tdep
	prototype.
	* amd64-fbsd-nat.c: Remove _initialize_amd64fbsd_nat prototype.
	* amd64-fbsd-tdep.c: Remove _initialize_amd64fbsd_tdep prototype.
	* amd64-linux-nat.c: Remove _initialize_amd64_linux_nat prototype.
	* amd64-linux-tdep.c: Remove _initialize_amd64_linux_tdep
	prototype.
	* amd64-nbsd-nat.c: Remove _initialize_amd64nbsd_nat prototype.
	* amd64-nbsd-tdep.c: Remove _initialize_amd64nbsd_tdep prototype.
	* amd64-obsd-nat.c: Remove _initialize_amd64obsd_nat prototype.
	* amd64-obsd-tdep.c: Remove _initialize_amd64obsd_tdep prototype.
	* amd64-sol2-tdep.c: Remove _initialize_amd64_sol2_tdep prototype.
	* amd64-tdep.c: Remove _initialize_amd64_tdep prototype.
	* amd64-windows-nat.c: Remove _initialize_amd64_windows_nat
	prototype.
	* amd64-windows-tdep.c: Remove _initialize_amd64_windows_tdep
	prototype.
	* annotate.c: Remove _initialize_annotate prototype.
	* arc-newlib-tdep.c: Remove _initialize_arc_newlib_tdep prototype.
	* arc-tdep.c: Remove _initialize_arc_tdep prototype.
	* arch-utils.c: Remove _initialize_gdbarch_utils prototype.
	* arm-linux-nat.c: Remove _initialize_arm_linux_nat prototype.
	* arm-linux-tdep.c: Remove _initialize_arm_linux_tdep prototype.
	* arm-nbsd-tdep.c: Remove _initialize_arm_netbsd_tdep prototype.
	* arm-obsd-tdep.c: Remove _initialize_armobsd_tdep prototype.
	* arm-symbian-tdep.c: Remove _initialize_arm_symbian_tdep
	prototype.
	* arm-tdep.c: Remove _initialize_arm_tdep prototype.
	* arm-wince-tdep.c: Remove _initialize_arm_wince_tdep prototype.
	* auto-load.c: Remove _initialize_auto_load prototype.
	* auxv.c: Remove _initialize_auxv prototype.
	* avr-tdep.c: Remove _initialize_avr_tdep prototype.
	* ax-gdb.c: Remove _initialize_ax_gdb prototype.
	* bfin-linux-tdep.c: Remove _initialize_bfin_linux_tdep prototype.
	* bfin-tdep.c: Remove _initialize_bfin_tdep prototype.
	* break-catch-sig.c: Remove _initialize_break_catch_sig prototype.
	* break-catch-syscall.c: Remove _initialize_break_catch_syscall
	prototype.
	* break-catch-throw.c: Remove _initialize_break_catch_throw
	prototype.
	* breakpoint.c: Remove _initialize_breakpoint prototype.
	* bsd-uthread.c: Remove _initialize_bsd_uthread prototype.
	* btrace.c: Remove _initialize_btrace prototype.
	* charset.c: Remove _initialize_charset prototype.
	* cli/cli-cmds.c: Remove _initialize_cli_cmds prototype.
	* cli/cli-dump.c: Remove _initialize_cli_dump prototype.
	* cli/cli-interp.c: Remove _initialize_cli_interp prototype.
	* cli/cli-logging.c: Remove _initialize_cli_logging prototype.
	* cli/cli-script.c: Remove _initialize_cli_script prototype.
	* coff-pe-read.c: Remove _initialize_coff_pe_read prototype.
	* coffread.c: Remove _initialize_coffread prototype.
	* compile/compile.c: Remove _initialize_compile prototype.
	* complaints.c: Remove _initialize_complaints prototype.
	* completer.c: Remove _initialize_completer prototype.
	* copying.awk: Remove _initialize_copying prototype.
	* copying.c: Regenerate.
	* core-regset.c: Remove _initialize_core_regset prototype.
	* corefile.c: Remove _initialize_core prototype.
	* corelow.c: Remove _initialize_corelow prototype.
	* cp-abi.c: Remove _initialize_cp_abi prototype.
	* cp-namespace.c: Remove _initialize_cp_namespace prototype.
	* cp-support.c: Remove _initialize_cp_support prototype.
	* cp-valprint.c: Remove _initialize_cp_valprint prototype.
	* cris-linux-tdep.c: Remove _initialize_cris_linux_tdep prototype.
	* cris-tdep.c: Remove _initialize_cris_tdep prototype.
	* ctf.c: Remove _initialize_ctf prototype.
	* d-lang.c: Remove _initialize_d_language prototype.
	* darwin-nat-info.c: Remove _initialize_darwin_info_commands
	prototype.
	* darwin-nat.c: Remove _initialize_darwin_inferior prototype.
	* dbxread.c: Remove _initialize_dbxread prototype.
	* dcache.c: Remove _initialize_dcache prototype.
	* demangle.c: Remove _initialize_demangler prototype.
	* disasm-selftests.c: Remove _initialize_disasm_selftests
	prototype.
	* disasm.c: Remove _initialize_disasm prototype.
	* dtrace-probe.c: Remove _initialize_dtrace_probe prototype.
	* dummy-frame.c: Remove _initialize_dummy_frame prototype.
	* dwarf2-frame-tailcall.c: Remove _initialize_tailcall_frame
	prototype.
	* dwarf2-frame.c: Remove _initialize_dwarf2_frame prototype.
	* dwarf2expr.c: Remove _initialize_dwarf2expr prototype.
	* dwarf2loc.c: Remove _initialize_dwarf2loc prototype.
	* dwarf2read.c: Remove _initialize_dwarf2_read prototype.
	* elfread.c: Remove _initialize_elfread prototype.
	* exec.c: Remove _initialize_exec prototype.
	* extension.c: Remove _initialize_extension prototype.
	* f-lang.c: Remove _initialize_f_language prototype.
	* f-valprint.c: Remove _initialize_f_valprint prototype.
	* fbsd-nat.c: Remove _initialize_fbsd_nat prototype.
	* fbsd-tdep.c: Remove _initialize_fbsd_tdep prototype.
	* filesystem.c: Remove _initialize_filesystem prototype.
	* findcmd.c: Remove _initialize_mem_search prototype.
	* fork-child.c: Remove _initialize_fork_child prototype.
	* frame-base.c: Remove _initialize_frame_base prototype.
	* frame-unwind.c: Remove _initialize_frame_unwind prototype.
	* frame.c: Remove _initialize_frame prototype.
	* frv-linux-tdep.c: Remove _initialize_frv_linux_tdep prototype.
	* frv-tdep.c: Remove _initialize_frv_tdep prototype.
	* ft32-tdep.c: Remove _initialize_ft32_tdep prototype.
	* gcore.c: Remove _initialize_gcore prototype.
	* gdb_bfd.c: Remove _initialize_gdb_bfd prototype.
	* gdbarch.c: Regenerate.
	* gdbarch.sh: Remove _initialize_gdbarch prototype.
	* gdbtypes.c: Remove _initialize_gdbtypes prototype.
	* gnu-nat.c: Remove _initialize_gnu_nat prototype.
	* gnu-v2-abi.c: Remove _initialize_gnu_v2_abi prototype.
	* gnu-v3-abi.c: Remove _initialize_gnu_v3_abi prototype.
	* go-lang.c: Remove _initialize_go_language prototype.
	* go32-nat.c: Remove _initialize_go32_nat prototype.
	* guile/guile.c: Remove _initialize_guile prototype.
	* h8300-tdep.c: Remove _initialize_h8300_tdep prototype.
	* hppa-linux-nat.c: Remove _initialize_hppa_linux_nat prototype.
	* hppa-linux-tdep.c: Remove _initialize_hppa_linux_tdep prototype.
	* hppa-nbsd-nat.c: Remove _initialize_hppanbsd_nat prototype.
	* hppa-nbsd-tdep.c: Remove _initialize_hppanbsd_tdep prototype.
	* hppa-obsd-nat.c: Remove _initialize_hppaobsd_nat prototype.
	* hppa-obsd-tdep.c: Remove _initialize_hppaobsd_tdep prototype.
	* hppa-tdep.c: Remove _initialize_hppa_tdep prototype.
	* i386-bsd-nat.c: Remove _initialize_i386bsd_nat prototype.
	* i386-cygwin-tdep.c: Remove _initialize_i386_cygwin_tdep
	prototype.
	* i386-darwin-tdep.c: Remove _initialize_i386_darwin_tdep
	prototype.
	* i386-dicos-tdep.c: Remove _initialize_i386_dicos_tdep prototype.
	* i386-fbsd-nat.c: Remove _initialize_i386fbsd_nat prototype.
	* i386-fbsd-tdep.c: Remove _initialize_i386fbsd_tdep prototype.
	* i386-gnu-nat.c: Remove _initialize_i386gnu_nat prototype.
	* i386-gnu-tdep.c: Remove _initialize_i386gnu_tdep prototype.
	* i386-linux-nat.c: Remove _initialize_i386_linux_nat prototype.
	* i386-linux-tdep.c: Remove _initialize_i386_linux_tdep prototype.
	* i386-nbsd-nat.c: Remove _initialize_i386nbsd_nat prototype.
	* i386-nbsd-tdep.c: Remove _initialize_i386nbsd_tdep prototype.
	* i386-nto-tdep.c: Remove _initialize_i386nto_tdep prototype.
	* i386-obsd-nat.c: Remove _initialize_i386obsd_nat prototype.
	* i386-obsd-tdep.c: Remove _initialize_i386obsd_tdep prototype.
	* i386-sol2-nat.c: Remove _initialize_amd64_sol2_nat prototype.
	* i386-sol2-tdep.c: Remove _initialize_amd64_sol2_tdep prototype.
	* i386-tdep.c: Remove _initialize_i386_tdep prototype.
	* i386-windows-nat.c: Remove _initialize_i386_windows_nat
	prototype.
	* ia64-libunwind-tdep.c: Remove _initialize_libunwind_frame
	prototype.
	* ia64-linux-nat.c: Remove _initialize_ia64_linux_nat prototype.
	* ia64-linux-tdep.c: Remove _initialize_ia64_linux_tdep prototype.
	* ia64-tdep.c: Remove _initialize_ia64_tdep prototype.
	* ia64-vms-tdep.c: Remove _initialize_ia64_vms_tdep prototype.
	* infcall.c: Remove _initialize_infcall prototype.
	* infcmd.c: Remove _initialize_infcmd prototype.
	* inferior.c: Remove _initialize_inferiors prototype.
	* inflow.c: Remove _initialize_inflow prototype.
	* infrun.c: Remove _initialize_infrun prototype.
	* interps.c: Remove _initialize_interpreter prototype.
	* iq2000-tdep.c: Remove _initialize_iq2000_tdep prototype.
	* jit.c: Remove _initialize_jit prototype.
	* language.c: Remove _initialize_language prototype.
	* linux-fork.c: Remove _initialize_linux_fork prototype.
	* linux-nat.c: Remove _initialize_linux_nat prototype.
	* linux-tdep.c: Remove _initialize_linux_tdep prototype.
	* linux-thread-db.c: Remove _initialize_thread_db prototype.
	* lm32-tdep.c: Remove _initialize_lm32_tdep prototype.
	* m2-lang.c: Remove _initialize_m2_language prototype.
	* m32c-tdep.c: Remove _initialize_m32c_tdep prototype.
	* m32r-linux-nat.c: Remove _initialize_m32r_linux_nat prototype.
	* m32r-linux-tdep.c: Remove _initialize_m32r_linux_tdep prototype.
	* m32r-tdep.c: Remove _initialize_m32r_tdep prototype.
	* m68hc11-tdep.c: Remove _initialize_m68hc11_tdep prototype.
	* m68k-bsd-nat.c: Remove _initialize_m68kbsd_nat prototype.
	* m68k-bsd-tdep.c: Remove _initialize_m68kbsd_tdep prototype.
	* m68k-linux-nat.c: Remove _initialize_m68k_linux_tdep prototype.
	* m68k-linux-tdep.c: Remove _initialize_m68k_linux_tdep prototype.
	* m68k-tdep.c: Remove _initialize_m68k_tdep prototype.
	* m88k-bsd-nat.c: Remove _initialize_m68kbsd_nat prototype.
	* m88k-tdep.c: Remove _initialize_m68kbsd_tdep prototype.
	* machoread.c: Remove _initialize_machoread prototype.
	* macrocmd.c: Remove _initialize_macrocmd prototype.
	* macroscope.c: Remove _initialize_macroscope prototype.
	* maint.c: Remove _initialize_maint_cmds prototype.
	* mdebugread.c: Remove _initialize_mdebugread prototype.
	* memattr.c: Remove _initialize_mem prototype.
	* mep-tdep.c: Remove _initialize_mep_tdep prototype.
	* mi/mi-cmd-env.c: Remove _initialize_mi_cmd_env prototype.
	* mi/mi-cmds.c: Remove _initialize_mi_cmds prototype.
	* mi/mi-interp.c: Remove _initialize_mi_interp prototype.
	* mi/mi-main.c: Remove _initialize_mi_main prototype.
	* microblaze-linux-tdep.c: Remove
	_initialize_microblaze_linux_tdep prototype.
	* microblaze-tdep.c: Remove _initialize_microblaze_tdep prototype.
	* mips-fbsd-nat.c: Remove _initialize_mips_fbsd_nat prototype.
	* mips-fbsd-tdep.c: Remove _initialize_mips_fbsd_tdep prototype.
	* mips-linux-nat.c: Remove _initialize_mips_linux_nat prototype.
	* mips-linux-tdep.c: Remove _initialize_mips_linux_tdep prototype.
	* mips-nbsd-nat.c: Remove _initialize_mipsnbsd_nat prototype.
	* mips-nbsd-tdep.c: Remove _initialize_mipsnbsd_tdep prototype.
	* mips-sde-tdep.c: Remove _initialize_mips_sde_tdep prototype.
	* mips-tdep.c: Remove _initialize_mips_tdep prototype.
	* mips64-obsd-nat.c: Remove _initialize_mips64obsd_nat prototype.
	* mips64-obsd-tdep.c: Remove _initialize_mips64obsd_tdep
	prototype.
	* mipsread.c: Remove _initialize_mipsread prototype.
	* mn10300-linux-tdep.c: Remove _initialize_mn10300_linux_tdep
	prototype.
	* mn10300-tdep.c: Remove _initialize_mn10300_tdep prototype.
	* moxie-tdep.c: Remove _initialize_moxie_tdep prototype.
	* msp430-tdep.c: Remove _initialize_msp430_tdep prototype.
	* mt-tdep.c: Remove _initialize_mt_tdep prototype.
	* nds32-tdep.c: Remove _initialize_nds32_tdep prototype.
	* nios2-linux-tdep.c: Remove _initialize_nios2_linux_tdep
	prototype.
	* nios2-tdep.c: Remove _initialize_nios2_tdep prototype.
	* nto-procfs.c: Remove _initialize_procfs prototype.
	* nto-tdep.c: Remove _initialize_nto_tdep prototype.
	* objc-lang.c: Remove _initialize_objc_language prototype.
	* objfiles.c: Remove _initialize_objfiles prototype.
	* observer.c: Remove observer_test_first_notification_function,
	observer_test_second_notification_function,
	observer_test_third_notification_function, and
	_initialize_observer prototypes.
	* opencl-lang.c: Remove _initialize_opencl_language prototypes.
	* osabi.c: Remove _initialize_gdb_osabi prototype.
	* osdata.c: Remove _initialize_osdata prototype.
	* p-valprint.c: Remove _initialize_pascal_valprint prototype.
	* parse.c: Remove _initialize_parse prototype.
	* ppc-fbsd-nat.c: Remove _initialize_ppcfbsd_nat prototype.
	* ppc-fbsd-tdep.c: Remove _initialize_ppcfbsd_tdep prototype.
	* ppc-linux-nat.c: Remove _initialize_ppc_linux_nat prototype.
	* ppc-linux-tdep.c: Remove _initialize_ppc_linux_tdep prototype.
	* ppc-nbsd-nat.c: Remove _initialize_ppcnbsd_nat prototype.
	* ppc-nbsd-tdep.c: Remove _initialize_ppcnbsd_tdep prototype.
	* ppc-obsd-nat.c: Remove _initialize_ppcobsd_nat prototype.
	* ppc-obsd-tdep.c: Remove _initialize_ppcobsd_tdep prototype.
	* printcmd.c: Remove _initialize_printcmd prototype.
	* probe.c: Remove _initialize_probe prototype.
	* proc-api.c: Remove _initialize_proc_api prototype.
	* proc-events.c: Remove _initialize_proc_events prototype.
	* proc-service.c: Remove _initialize_proc_service prototype.
	* procfs.c: Remove _initialize_procfs prototype.
	* psymtab.c: Remove _initialize_psymtab prototype.
	* python/python.c: Remove _initialize_python prototype.
	* ravenscar-thread.c: Remove _initialize_ravenscar prototype.
	* record-btrace.c: Remove _initialize_record_btrace prototype.
	* record-full.c: Remove _initialize_record_full prototype.
	* record.c: Remove _initialize_record prototype.
	* regcache.c: Remove _initialize_regcache prototype.
	* reggroups.c: Remove _initialize_reggroup prototype.
	* remote-notif.c: Remove _initialize_notif prototype.
	* remote-sim.c: Remove _initialize_remote_sim prototype.
	* remote.c: Remove _initialize_remote prototype.
	* reverse.c: Remove _initialize_reverse prototype.
	* rl78-tdep.c: Remove _initialize_rl78_tdep prototype.
	* rs6000-aix-tdep.c: Remove _initialize_rs6000_aix_tdep prototype.
	* rs6000-lynx178-tdep.c: Remove _initialize_rs6000_lynx178_tdep
	prototype.
	* rs6000-nat.c: Remove _initialize_rs6000_nat prototype.
	* rs6000-tdep.c: Remove _initialize_rs6000_tdep prototype.
	* rust-exp.y: Remove _initialize_rust_exp prototype.
	* rx-tdep.c: Remove _initialize_rx_tdep prototype.
	* s390-linux-nat.c: Remove _initialize_s390_nat prototype.
	* s390-linux-tdep.c: Remove _initialize_s390_tdep prototype.
	* score-tdep.c: Remove _initialize_score_tdep prototype.
	* selftest-arch.c: Remove _initialize_selftests_foreach_arch
	prototype.
	* ser-go32.c: Remove _initialize_ser_dos prototype.
	* ser-mingw.c: Remove _initialize_ser_windows prototype.
	* ser-pipe.c: Remove _initialize_ser_pipe prototype.
	* ser-tcp.c: Remove _initialize_ser_tcp prototype.
	* ser-unix.c: Remove _initialize_ser_hardwire prototype.
	* serial.c: Remove _initialize_serial prototype.
	* sh-linux-tdep.c: Remove _initialize_sh_linux_tdep prototype.
	* sh-nbsd-nat.c: Remove _initialize_shnbsd_nat prototype.
	* sh-nbsd-tdep.c: Remove _initialize_shnbsd_tdep prototype.
	* sh-tdep.c: Remove _initialize_sh_tdep prototype.
	* skip.c: Remove _initialize_step_skip prototype.
	* sol-thread.c: Remove _initialize_sol_thread prototype.
	* solib-aix.c: Remove _initialize_solib_aix prototype.
	* solib-darwin.c: Remove _initialize_darwin_solib prototype.
	* solib-dsbt.c: Remove _initialize_dsbt_solib prototype.
	* solib-frv.c: Remove _initialize_frv_solib prototype.
	* solib-spu.c: Remove _initialize_spu_solib prototype.
	* solib-svr4.c: Remove _initialize_svr4_solib prototype.
	* solib-target.c: Remove _initialize_solib_target prototype.
	* solib.c: Remove _initialize_solib prototype.
	* source.c: Remove _initialize_source prototype.
	* sparc-linux-nat.c: Remove _initialize_sparc_linux_nat prototype.
	* sparc-linux-tdep.c: Remove _initialize_sparc_linux_tdep
	prototype.
	* sparc-nat.c: Remove _initialize_sparc_nat prototype.
	* sparc-nbsd-nat.c: Remove _initialize_sparcnbsd_nat prototype.
	* sparc-nbsd-tdep.c: Remove _initialize_sparcnbsd_tdep prototype.
	* sparc-obsd-tdep.c: Remove _initialize_sparc32obsd_tdep
	prototype.
	* sparc-sol2-nat.c: Remove _initialize_sparc_sol2_nat prototype.
	* sparc-sol2-tdep.c: Remove _initialize_sparc_sol2_tdep prototype.
	* sparc-tdep.c: Remove _initialize_sparc_tdep prototype.
	* sparc64-fbsd-nat.c: Remove _initialize_sparc64fbsd_nat
	prototype.
	* sparc64-fbsd-tdep.c: Remove _initialize_sparc64fbsd_tdep
	prototype.
	* sparc64-linux-nat.c: Remove _initialize_sparc64_linux_nat
	prototype.
	* sparc64-linux-tdep.c: Remove _initialize_sparc64_linux_tdep
	prototype.
	* sparc64-nat.c: Remove _initialize_sparc64_nat prototype.
	* sparc64-nbsd-nat.c: Remove _initialize_sparc64nbsd_nat
	prototype.
	* sparc64-nbsd-tdep.c: Remove _initialize_sparc64nbsd_tdep
	prototype.
	* sparc64-obsd-nat.c: Remove _initialize_sparc64obsd_nat
	prototype.
	* sparc64-obsd-tdep.c: Remove _initialize_sparc64obsd_tdep
	prototype.
	* sparc64-sol2-tdep.c: Remove _initialize_sparc64_sol2_tdep
	prototype.
	* spu-linux-nat.c: Remove _initialize_spu_nat prototype.
	* spu-multiarch.c: Remove _initialize_spu_multiarch prototype.
	* spu-tdep.c: Remove _initialize_spu_tdep prototype.
	* stabsread.c: Remove _initialize_stabsread prototype.
	* stack.c: Remove _initialize_stack prototype.
	* stap-probe.c: Remove _initialize_stap_probe prototype.
	* std-regs.c: Remove _initialize_frame_reg prototype.
	* symfile-debug.c: Remove _initialize_symfile_debug prototype.
	* symfile-mem.c: Remove _initialize_symfile_mem prototype.
	* symfile.c: Remove _initialize_symfile prototype.
	* symmisc.c: Remove _initialize_symmisc prototype.
	* symtab.c: Remove _initialize_symtab prototype.
	* target-dcache.c: Remove _initialize_target_dcache prototype.
	* target-descriptions.c: Remove _initialize_target_descriptions
	prototype.
	* thread.c: Remove _initialize_thread prototype.
	* tic6x-linux-tdep.c: Remove _initialize_tic6x_linux_tdep
	prototype.
	* tic6x-tdep.c: Remove _initialize_tic6x_tdep prototype.
	* tilegx-linux-nat.c: Remove _initialize_tile_linux_nat prototype.
	* tilegx-linux-tdep.c: Remove _initialize_tilegx_linux_tdep
	prototype.
	* tilegx-tdep.c: Remove _initialize_tilegx_tdep prototype.
	* tracefile-tfile.c: Remove _initialize_tracefile_tfile prototype.
	* tracefile.c: Remove _initialize_tracefile prototype.
	* tracepoint.c: Remove _initialize_tracepoint prototype.
	* tui/tui-hooks.c: Remove _initialize_tui_hooks prototype.
	* tui/tui-interp.c: Remove _initialize_tui_interp prototype.
	* tui/tui-layout.c: Remove _initialize_tui_layout prototype.
	* tui/tui-regs.c: Remove _initialize_tui_regs prototype.
	* tui/tui-stack.c: Remove _initialize_tui_stack prototype.
	* tui/tui-win.c: Remove _initialize_tui_win prototype.
	* tui/tui.c: Remove _initialize_tui prototype.
	* typeprint.c: Remove _initialize_typeprint prototype.
	* user-regs.c: Remove _initialize_user_regs prototype.
	* utils.c: Remove _initialize_utils prototype.
	* v850-tdep.c: Remove _initialize_v850_tdep prototype.
	* valarith.c: Remove _initialize_valarith prototype.
	* valops.c: Remove _initialize_valops prototype.
	* valprint.c: Remove _initialize_valprint prototype.
	* value.c: Remove _initialize_values prototype.
	* varobj.c: Remove _initialize_varobj prototype.
	* vax-bsd-nat.c: Remove _initialize_vaxbsd_nat prototype.
	* vax-nbsd-tdep.c: Remove _initialize_vaxnbsd_tdep prototype.
	* vax-tdep.c: Remove _initialize_vax_tdep prototype.
	* windows-nat.c: Remove _initialize_windows_nat,
	_initialize_check_for_gdb_ini, and _initialize_loadable
	prototypes.
	* windows-tdep.c: Remove _initialize_windows_tdep prototype.
	* xcoffread.c: Remove _initialize_xcoffread prototype.
	* xml-support.c: Remove _initialize_xml_support prototype.
	* xstormy16-tdep.c: Remove _initialize_xstormy16_tdep prototype.
	* xtensa-linux-nat.c: Remove _initialize_xtensa_linux_nat
	prototype.
	* xtensa-linux-tdep.c: Remove _initialize_xtensa_linux_tdep
	prototype.
	* xtensa-tdep.c: Remove _initialize_xtensa_tdep prototype.
2017-09-09 11:02:37 -07:00

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/* Target-dependent code for the NDS32 architecture, for GDB.
Copyright (C) 2013-2017 Free Software Foundation, Inc.
Contributed by Andes Technology Corporation.
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 "frame.h"
#include "frame-unwind.h"
#include "frame-base.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "gdbcore.h"
#include "value.h"
#include "reggroups.h"
#include "inferior.h"
#include "osabi.h"
#include "arch-utils.h"
#include "regcache.h"
#include "dis-asm.h"
#include "user-regs.h"
#include "elf-bfd.h"
#include "dwarf2-frame.h"
#include "remote.h"
#include "target-descriptions.h"
#include "nds32-tdep.h"
#include "elf/nds32.h"
#include "opcode/nds32.h"
#include <algorithm>
#include "features/nds32.c"
/* Simple macros for instruction analysis. */
#define CHOP_BITS(insn, n) (insn & ~__MASK (n))
#define N32_LSMW_ENABLE4(insn) (((insn) >> 6) & 0xf)
#define N32_SMW_ADM \
N32_TYPE4 (LSMW, 0, 0, 0, 1, (N32_LSMW_ADM << 2) | N32_LSMW_LSMW)
#define N32_LMW_BIM \
N32_TYPE4 (LSMW, 0, 0, 0, 0, (N32_LSMW_BIM << 2) | N32_LSMW_LSMW)
#define N32_FLDI_SP \
N32_TYPE2 (LDC, 0, REG_SP, 0)
/* Use an invalid address value as 'not available' marker. */
enum { REG_UNAVAIL = (CORE_ADDR) -1 };
/* Use an impossible value as invalid offset. */
enum { INVALID_OFFSET = (CORE_ADDR) -1 };
/* Instruction groups for NDS32 epilogue analysis. */
enum
{
/* Instructions used everywhere, not only in epilogue. */
INSN_NORMAL,
/* Instructions used to reset sp for local vars, arguments, etc. */
INSN_RESET_SP,
/* Instructions used to recover saved regs and to recover padding. */
INSN_RECOVER,
/* Instructions used to return to the caller. */
INSN_RETURN,
/* Instructions used to recover saved regs and to return to the caller. */
INSN_RECOVER_RETURN,
};
static const char *const nds32_register_names[] =
{
/* 32 GPRs. */
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
"r24", "r25", "r26", "r27", "fp", "gp", "lp", "sp",
/* PC. */
"pc",
};
static const char *const nds32_fdr_register_names[] =
{
"fd0", "fd1", "fd2", "fd3", "fd4", "fd5", "fd6", "fd7",
"fd8", "fd9", "fd10", "fd11", "fd12", "fd13", "fd14", "fd15",
"fd16", "fd17", "fd18", "fd19", "fd20", "fd21", "fd22", "fd23",
"fd24", "fd25", "fd26", "fd27", "fd28", "fd29", "fd30", "fd31"
};
static const char *const nds32_fsr_register_names[] =
{
"fs0", "fs1", "fs2", "fs3", "fs4", "fs5", "fs6", "fs7",
"fs8", "fs9", "fs10", "fs11", "fs12", "fs13", "fs14", "fs15",
"fs16", "fs17", "fs18", "fs19", "fs20", "fs21", "fs22", "fs23",
"fs24", "fs25", "fs26", "fs27", "fs28", "fs29", "fs30", "fs31"
};
/* The number of registers for four FPU configuration options. */
const int num_fdr_map[] = { 4, 8, 16, 32 };
const int num_fsr_map[] = { 8, 16, 32, 32 };
/* Aliases for registers. */
static const struct
{
const char *name;
const char *alias;
} nds32_register_aliases[] =
{
{"r15", "ta"},
{"r26", "p0"},
{"r27", "p1"},
{"fp", "r28"},
{"gp", "r29"},
{"lp", "r30"},
{"sp", "r31"},
{"cr0", "cpu_ver"},
{"cr1", "icm_cfg"},
{"cr2", "dcm_cfg"},
{"cr3", "mmu_cfg"},
{"cr4", "msc_cfg"},
{"cr5", "core_id"},
{"cr6", "fucop_exist"},
{"cr7", "msc_cfg2"},
{"ir0", "psw"},
{"ir1", "ipsw"},
{"ir2", "p_psw"},
{"ir3", "ivb"},
{"ir4", "eva"},
{"ir5", "p_eva"},
{"ir6", "itype"},
{"ir7", "p_itype"},
{"ir8", "merr"},
{"ir9", "ipc"},
{"ir10", "p_ipc"},
{"ir11", "oipc"},
{"ir12", "p_p0"},
{"ir13", "p_p1"},
{"ir14", "int_mask"},
{"ir15", "int_pend"},
{"ir16", "sp_usr"},
{"ir17", "sp_priv"},
{"ir18", "int_pri"},
{"ir19", "int_ctrl"},
{"ir20", "sp_usr1"},
{"ir21", "sp_priv1"},
{"ir22", "sp_usr2"},
{"ir23", "sp_priv2"},
{"ir24", "sp_usr3"},
{"ir25", "sp_priv3"},
{"ir26", "int_mask2"},
{"ir27", "int_pend2"},
{"ir28", "int_pri2"},
{"ir29", "int_trigger"},
{"mr0", "mmu_ctl"},
{"mr1", "l1_pptb"},
{"mr2", "tlb_vpn"},
{"mr3", "tlb_data"},
{"mr4", "tlb_misc"},
{"mr5", "vlpt_idx"},
{"mr6", "ilmb"},
{"mr7", "dlmb"},
{"mr8", "cache_ctl"},
{"mr9", "hsmp_saddr"},
{"mr10", "hsmp_eaddr"},
{"mr11", "bg_region"},
{"dr0", "bpc0"},
{"dr1", "bpc1"},
{"dr2", "bpc2"},
{"dr3", "bpc3"},
{"dr4", "bpc4"},
{"dr5", "bpc5"},
{"dr6", "bpc6"},
{"dr7", "bpc7"},
{"dr8", "bpa0"},
{"dr9", "bpa1"},
{"dr10", "bpa2"},
{"dr11", "bpa3"},
{"dr12", "bpa4"},
{"dr13", "bpa5"},
{"dr14", "bpa6"},
{"dr15", "bpa7"},
{"dr16", "bpam0"},
{"dr17", "bpam1"},
{"dr18", "bpam2"},
{"dr19", "bpam3"},
{"dr20", "bpam4"},
{"dr21", "bpam5"},
{"dr22", "bpam6"},
{"dr23", "bpam7"},
{"dr24", "bpv0"},
{"dr25", "bpv1"},
{"dr26", "bpv2"},
{"dr27", "bpv3"},
{"dr28", "bpv4"},
{"dr29", "bpv5"},
{"dr30", "bpv6"},
{"dr31", "bpv7"},
{"dr32", "bpcid0"},
{"dr33", "bpcid1"},
{"dr34", "bpcid2"},
{"dr35", "bpcid3"},
{"dr36", "bpcid4"},
{"dr37", "bpcid5"},
{"dr38", "bpcid6"},
{"dr39", "bpcid7"},
{"dr40", "edm_cfg"},
{"dr41", "edmsw"},
{"dr42", "edm_ctl"},
{"dr43", "edm_dtr"},
{"dr44", "bpmtc"},
{"dr45", "dimbr"},
{"dr46", "tecr0"},
{"dr47", "tecr1"},
{"hspr0", "hsp_ctl"},
{"hspr1", "sp_bound"},
{"hspr2", "sp_bound_priv"},
{"pfr0", "pfmc0"},
{"pfr1", "pfmc1"},
{"pfr2", "pfmc2"},
{"pfr3", "pfm_ctl"},
{"pfr4", "pft_ctl"},
{"dmar0", "dma_cfg"},
{"dmar1", "dma_gcsw"},
{"dmar2", "dma_chnsel"},
{"dmar3", "dma_act"},
{"dmar4", "dma_setup"},
{"dmar5", "dma_isaddr"},
{"dmar6", "dma_esaddr"},
{"dmar7", "dma_tcnt"},
{"dmar8", "dma_status"},
{"dmar9", "dma_2dset"},
{"dmar10", "dma_2dsctl"},
{"dmar11", "dma_rcnt"},
{"dmar12", "dma_hstatus"},
{"racr0", "prusr_acc_ctl"},
{"fucpr", "fucop_ctl"},
{"idr0", "sdz_ctl"},
{"idr1", "misc_ctl"},
{"idr2", "ecc_misc"},
{"secur0", "sfcr"},
{"secur1", "sign"},
{"secur2", "isign"},
{"secur3", "p_isign"},
};
/* Value of a register alias. BATON is the regnum of the corresponding
register. */
static struct value *
value_of_nds32_reg (struct frame_info *frame, const void *baton)
{
return value_of_register ((int) (intptr_t) baton, frame);
}
/* Implement the "frame_align" gdbarch method. */
static CORE_ADDR
nds32_frame_align (struct gdbarch *gdbarch, CORE_ADDR sp)
{
/* 8-byte aligned. */
return align_down (sp, 8);
}
/* The same insn machine code is used for little-endian and big-endian. */
constexpr gdb_byte nds32_break_insn[] = { 0xEA, 0x00 };
typedef BP_MANIPULATION (nds32_break_insn) nds32_breakpoint;
/* Implement the "dwarf2_reg_to_regnum" gdbarch method. */
static int
nds32_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, int num)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
const int FSR = 38;
const int FDR = FSR + 32;
if (num >= 0 && num < 32)
{
/* General-purpose registers (R0 - R31). */
return num;
}
else if (num >= FSR && num < FSR + 32)
{
/* Single precision floating-point registers (FS0 - FS31). */
return num - FSR + tdep->fs0_regnum;
}
else if (num >= FDR && num < FDR + 32)
{
/* Double precision floating-point registers (FD0 - FD31). */
return num - FDR + NDS32_FD0_REGNUM;
}
/* No match, return a inaccessible register number. */
return -1;
}
/* NDS32 register groups. */
static struct reggroup *nds32_cr_reggroup;
static struct reggroup *nds32_ir_reggroup;
static struct reggroup *nds32_mr_reggroup;
static struct reggroup *nds32_dr_reggroup;
static struct reggroup *nds32_pfr_reggroup;
static struct reggroup *nds32_hspr_reggroup;
static struct reggroup *nds32_dmar_reggroup;
static struct reggroup *nds32_racr_reggroup;
static struct reggroup *nds32_idr_reggroup;
static struct reggroup *nds32_secur_reggroup;
static void
nds32_init_reggroups (void)
{
nds32_cr_reggroup = reggroup_new ("cr", USER_REGGROUP);
nds32_ir_reggroup = reggroup_new ("ir", USER_REGGROUP);
nds32_mr_reggroup = reggroup_new ("mr", USER_REGGROUP);
nds32_dr_reggroup = reggroup_new ("dr", USER_REGGROUP);
nds32_pfr_reggroup = reggroup_new ("pfr", USER_REGGROUP);
nds32_hspr_reggroup = reggroup_new ("hspr", USER_REGGROUP);
nds32_dmar_reggroup = reggroup_new ("dmar", USER_REGGROUP);
nds32_racr_reggroup = reggroup_new ("racr", USER_REGGROUP);
nds32_idr_reggroup = reggroup_new ("idr", USER_REGGROUP);
nds32_secur_reggroup = reggroup_new ("secur", USER_REGGROUP);
}
static void
nds32_add_reggroups (struct gdbarch *gdbarch)
{
/* Add pre-defined register groups. */
reggroup_add (gdbarch, general_reggroup);
reggroup_add (gdbarch, float_reggroup);
reggroup_add (gdbarch, system_reggroup);
reggroup_add (gdbarch, all_reggroup);
reggroup_add (gdbarch, save_reggroup);
reggroup_add (gdbarch, restore_reggroup);
/* Add NDS32 register groups. */
reggroup_add (gdbarch, nds32_cr_reggroup);
reggroup_add (gdbarch, nds32_ir_reggroup);
reggroup_add (gdbarch, nds32_mr_reggroup);
reggroup_add (gdbarch, nds32_dr_reggroup);
reggroup_add (gdbarch, nds32_pfr_reggroup);
reggroup_add (gdbarch, nds32_hspr_reggroup);
reggroup_add (gdbarch, nds32_dmar_reggroup);
reggroup_add (gdbarch, nds32_racr_reggroup);
reggroup_add (gdbarch, nds32_idr_reggroup);
reggroup_add (gdbarch, nds32_secur_reggroup);
}
/* Implement the "register_reggroup_p" gdbarch method. */
static int
nds32_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
struct reggroup *reggroup)
{
const char *reg_name;
const char *group_name;
int ret;
if (reggroup == all_reggroup)
return 1;
/* General reggroup contains only GPRs and PC. */
if (reggroup == general_reggroup)
return regnum <= NDS32_PC_REGNUM;
if (reggroup == float_reggroup || reggroup == save_reggroup
|| reggroup == restore_reggroup)
{
ret = tdesc_register_in_reggroup_p (gdbarch, regnum, reggroup);
if (ret != -1)
return ret;
return default_register_reggroup_p (gdbarch, regnum, reggroup);
}
if (reggroup == system_reggroup)
return (regnum > NDS32_PC_REGNUM)
&& !nds32_register_reggroup_p (gdbarch, regnum, float_reggroup);
/* The NDS32 reggroup contains registers whose name is prefixed
by reggroup name. */
reg_name = gdbarch_register_name (gdbarch, regnum);
group_name = reggroup_name (reggroup);
return !strncmp (reg_name, group_name, strlen (group_name));
}
/* Implement the "pseudo_register_type" tdesc_arch_data method. */
static struct type *
nds32_pseudo_register_type (struct gdbarch *gdbarch, int regnum)
{
regnum -= gdbarch_num_regs (gdbarch);
/* Currently, only FSRs could be defined as pseudo registers. */
if (regnum < gdbarch_num_pseudo_regs (gdbarch))
return arch_float_type (gdbarch, -1, "builtin_type_ieee_single",
floatformats_ieee_single);
warning (_("Unknown nds32 pseudo register %d."), regnum);
return NULL;
}
/* Implement the "pseudo_register_name" tdesc_arch_data method. */
static const char *
nds32_pseudo_register_name (struct gdbarch *gdbarch, int regnum)
{
regnum -= gdbarch_num_regs (gdbarch);
/* Currently, only FSRs could be defined as pseudo registers. */
if (regnum < gdbarch_num_pseudo_regs (gdbarch))
return nds32_fsr_register_names[regnum];
warning (_("Unknown nds32 pseudo register %d."), regnum);
return NULL;
}
/* Implement the "pseudo_register_read" gdbarch method. */
static enum register_status
nds32_pseudo_register_read (struct gdbarch *gdbarch,
struct regcache *regcache, int regnum,
gdb_byte *buf)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
gdb_byte reg_buf[8];
int offset, fdr_regnum;
enum register_status status;
/* This function is registered in nds32_gdbarch_init only after these are
set. */
gdb_assert (tdep->fpu_freg != -1);
gdb_assert (tdep->use_pseudo_fsrs != 0);
regnum -= gdbarch_num_regs (gdbarch);
/* Currently, only FSRs could be defined as pseudo registers. */
if (regnum < gdbarch_num_pseudo_regs (gdbarch))
{
/* fs0 is always the most significant half of fd0. */
if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
offset = (regnum & 1) ? 4 : 0;
else
offset = (regnum & 1) ? 0 : 4;
fdr_regnum = NDS32_FD0_REGNUM + (regnum >> 1);
status = regcache_raw_read (regcache, fdr_regnum, reg_buf);
if (status == REG_VALID)
memcpy (buf, reg_buf + offset, 4);
return status;
}
gdb_assert_not_reached ("invalid pseudo register number");
}
/* Implement the "pseudo_register_write" gdbarch method. */
static void
nds32_pseudo_register_write (struct gdbarch *gdbarch,
struct regcache *regcache, int regnum,
const gdb_byte *buf)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
gdb_byte reg_buf[8];
int offset, fdr_regnum;
/* This function is registered in nds32_gdbarch_init only after these are
set. */
gdb_assert (tdep->fpu_freg != -1);
gdb_assert (tdep->use_pseudo_fsrs != 0);
regnum -= gdbarch_num_regs (gdbarch);
/* Currently, only FSRs could be defined as pseudo registers. */
if (regnum < gdbarch_num_pseudo_regs (gdbarch))
{
/* fs0 is always the most significant half of fd0. */
if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG)
offset = (regnum & 1) ? 4 : 0;
else
offset = (regnum & 1) ? 0 : 4;
fdr_regnum = NDS32_FD0_REGNUM + (regnum >> 1);
regcache_raw_read (regcache, fdr_regnum, reg_buf);
memcpy (reg_buf + offset, buf, 4);
regcache_raw_write (regcache, fdr_regnum, reg_buf);
return;
}
gdb_assert_not_reached ("invalid pseudo register number");
}
/* Helper function for NDS32 ABI. Return true if FPRs can be used
to pass function arguments and return value. */
static int
nds32_abi_use_fpr (int elf_abi)
{
return elf_abi == E_NDS_ABI_V2FP_PLUS;
}
/* Helper function for NDS32 ABI. Return true if GPRs and stack
can be used together to pass an argument. */
static int
nds32_abi_split (int elf_abi)
{
return elf_abi == E_NDS_ABI_AABI;
}
#define NDS32_NUM_SAVED_REGS (NDS32_LP_REGNUM + 1)
struct nds32_frame_cache
{
/* The previous frame's inner most stack address. Used as this
frame ID's stack_addr. */
CORE_ADDR prev_sp;
/* The frame's base, optionally used by the high-level debug info. */
CORE_ADDR base;
/* During prologue analysis, keep how far the SP and FP have been offset
from the start of the stack frame (as defined by the previous frame's
stack pointer).
During epilogue analysis, keep how far the SP has been offset from the
current stack pointer. */
CORE_ADDR sp_offset;
CORE_ADDR fp_offset;
/* The address of the first instruction in this function. */
CORE_ADDR pc;
/* Saved registers. */
CORE_ADDR saved_regs[NDS32_NUM_SAVED_REGS];
};
/* Allocate and initialize a frame cache. */
static struct nds32_frame_cache *
nds32_alloc_frame_cache (void)
{
struct nds32_frame_cache *cache;
int i;
cache = FRAME_OBSTACK_ZALLOC (struct nds32_frame_cache);
/* Initialize fp_offset to check if FP is set in prologue. */
cache->fp_offset = INVALID_OFFSET;
/* Saved registers. We initialize these to -1 since zero is a valid
offset. */
for (i = 0; i < NDS32_NUM_SAVED_REGS; i++)
cache->saved_regs[i] = REG_UNAVAIL;
return cache;
}
/* Helper function for instructions used to push multiple words. */
static void
nds32_push_multiple_words (struct nds32_frame_cache *cache, int rb, int re,
int enable4)
{
CORE_ADDR sp_offset = cache->sp_offset;
int i;
/* Check LP, GP, FP in enable4. */
for (i = 1; i <= 3; i++)
{
if ((enable4 >> i) & 0x1)
{
sp_offset += 4;
cache->saved_regs[NDS32_SP_REGNUM - i] = sp_offset;
}
}
/* Skip case where re == rb == sp. */
if ((rb < REG_FP) && (re < REG_FP))
{
for (i = re; i >= rb; i--)
{
sp_offset += 4;
cache->saved_regs[i] = sp_offset;
}
}
/* For sp, update the offset. */
cache->sp_offset = sp_offset;
}
/* Analyze the instructions within the given address range. If CACHE
is non-NULL, fill it in. Return the first address beyond the given
address range. If CACHE is NULL, return the first address not
recognized as a prologue instruction. */
static CORE_ADDR
nds32_analyze_prologue (struct gdbarch *gdbarch, CORE_ADDR pc,
CORE_ADDR limit_pc, struct nds32_frame_cache *cache)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
int abi_use_fpr = nds32_abi_use_fpr (tdep->elf_abi);
/* Current scanning status. */
int in_prologue_bb = 0;
int val_ta = 0;
uint32_t insn, insn_len;
for (; pc < limit_pc; pc += insn_len)
{
insn = read_memory_unsigned_integer (pc, 4, BFD_ENDIAN_BIG);
if ((insn & 0x80000000) == 0)
{
/* 32-bit instruction */
insn_len = 4;
if (CHOP_BITS (insn, 15) == N32_TYPE2 (ADDI, REG_SP, REG_SP, 0))
{
/* addi $sp, $sp, imm15s */
int imm15s = N32_IMM15S (insn);
if (imm15s < 0)
{
if (cache != NULL)
cache->sp_offset += -imm15s;
in_prologue_bb = 1;
continue;
}
}
else if (CHOP_BITS (insn, 15) == N32_TYPE2 (ADDI, REG_FP, REG_SP, 0))
{
/* addi $fp, $sp, imm15s */
int imm15s = N32_IMM15S (insn);
if (imm15s > 0)
{
if (cache != NULL)
cache->fp_offset = cache->sp_offset - imm15s;
in_prologue_bb = 1;
continue;
}
}
else if ((insn & ~(__MASK (19) << 6)) == N32_SMW_ADM
&& N32_RA5 (insn) == REG_SP)
{
/* smw.adm Rb, [$sp], Re, enable4 */
if (cache != NULL)
nds32_push_multiple_words (cache, N32_RT5 (insn),
N32_RB5 (insn),
N32_LSMW_ENABLE4 (insn));
in_prologue_bb = 1;
continue;
}
else if (insn == N32_ALU1 (ADD, REG_SP, REG_SP, REG_TA)
|| insn == N32_ALU1 (ADD, REG_SP, REG_TA, REG_SP))
{
/* add $sp, $sp, $ta */
/* add $sp, $ta, $sp */
if (val_ta < 0)
{
if (cache != NULL)
cache->sp_offset += -val_ta;
in_prologue_bb = 1;
continue;
}
}
else if (CHOP_BITS (insn, 20) == N32_TYPE1 (MOVI, REG_TA, 0))
{
/* movi $ta, imm20s */
if (cache != NULL)
val_ta = N32_IMM20S (insn);
continue;
}
else if (CHOP_BITS (insn, 20) == N32_TYPE1 (SETHI, REG_TA, 0))
{
/* sethi $ta, imm20u */
if (cache != NULL)
val_ta = N32_IMM20U (insn) << 12;
continue;
}
else if (CHOP_BITS (insn, 15) == N32_TYPE2 (ORI, REG_TA, REG_TA, 0))
{
/* ori $ta, $ta, imm15u */
if (cache != NULL)
val_ta |= N32_IMM15U (insn);
continue;
}
else if (CHOP_BITS (insn, 15) == N32_TYPE2 (ADDI, REG_TA, REG_TA, 0))
{
/* addi $ta, $ta, imm15s */
if (cache != NULL)
val_ta += N32_IMM15S (insn);
continue;
}
if (insn == N32_ALU1 (ADD, REG_GP, REG_TA, REG_GP)
|| insn == N32_ALU1 (ADD, REG_GP, REG_GP, REG_TA))
{
/* add $gp, $ta, $gp */
/* add $gp, $gp, $ta */
in_prologue_bb = 1;
continue;
}
else if (CHOP_BITS (insn, 20) == N32_TYPE1 (MOVI, REG_GP, 0))
{
/* movi $gp, imm20s */
in_prologue_bb = 1;
continue;
}
else if (CHOP_BITS (insn, 20) == N32_TYPE1 (SETHI, REG_GP, 0))
{
/* sethi $gp, imm20u */
in_prologue_bb = 1;
continue;
}
else if (CHOP_BITS (insn, 15) == N32_TYPE2 (ORI, REG_GP, REG_GP, 0))
{
/* ori $gp, $gp, imm15u */
in_prologue_bb = 1;
continue;
}
else
{
/* Jump/Branch insns never appear in prologue basic block.
The loop can be escaped early when these insns are met. */
if (in_prologue_bb == 1)
{
int op = N32_OP6 (insn);
if (op == N32_OP6_JI
|| op == N32_OP6_JREG
|| op == N32_OP6_BR1
|| op == N32_OP6_BR2
|| op == N32_OP6_BR3)
break;
}
}
if (abi_use_fpr && N32_OP6 (insn) == N32_OP6_SDC
&& __GF (insn, 12, 3) == 0)
{
/* For FPU insns, CP (bit [13:14]) should be CP0, and only
normal form (bit [12] == 0) is used. */
/* fsdi FDt, [$sp + (imm12s << 2)] */
if (N32_RA5 (insn) == REG_SP)
continue;
}
/* The optimizer might shove anything into the prologue, if
we build up cache (cache != NULL) from analyzing prologue,
we just skip what we don't recognize and analyze further to
make cache as complete as possible. However, if we skip
prologue, we'll stop immediately on unrecognized
instruction. */
if (cache == NULL)
break;
}
else
{
/* 16-bit instruction */
insn_len = 2;
insn >>= 16;
if (CHOP_BITS (insn, 10) == N16_TYPE10 (ADDI10S, 0))
{
/* addi10s.sp */
int imm10s = N16_IMM10S (insn);
if (imm10s < 0)
{
if (cache != NULL)
cache->sp_offset += -imm10s;
in_prologue_bb = 1;
continue;
}
}
else if (__GF (insn, 7, 8) == N16_T25_PUSH25)
{
/* push25 */
if (cache != NULL)
{
int imm8u = (insn & 0x1f) << 3;
int re = (insn >> 5) & 0x3;
const int reg_map[] = { 6, 8, 10, 14 };
/* Operation 1 -- smw.adm R6, [$sp], Re, #0xe */
nds32_push_multiple_words (cache, 6, reg_map[re], 0xe);
/* Operation 2 -- sp = sp - (imm5u << 3) */
cache->sp_offset += imm8u;
}
in_prologue_bb = 1;
continue;
}
else if (insn == N16_TYPE5 (ADD5PC, REG_GP))
{
/* add5.pc $gp */
in_prologue_bb = 1;
continue;
}
else if (CHOP_BITS (insn, 5) == N16_TYPE55 (MOVI55, REG_GP, 0))
{
/* movi55 $gp, imm5s */
in_prologue_bb = 1;
continue;
}
else
{
/* Jump/Branch insns never appear in prologue basic block.
The loop can be escaped early when these insns are met. */
if (in_prologue_bb == 1)
{
uint32_t insn5 = CHOP_BITS (insn, 5);
uint32_t insn8 = CHOP_BITS (insn, 8);
uint32_t insn38 = CHOP_BITS (insn, 11);
if (insn5 == N16_TYPE5 (JR5, 0)
|| insn5 == N16_TYPE5 (JRAL5, 0)
|| insn5 == N16_TYPE5 (RET5, 0)
|| insn8 == N16_TYPE8 (J8, 0)
|| insn8 == N16_TYPE8 (BEQZS8, 0)
|| insn8 == N16_TYPE8 (BNEZS8, 0)
|| insn38 == N16_TYPE38 (BEQZ38, 0, 0)
|| insn38 == N16_TYPE38 (BNEZ38, 0, 0)
|| insn38 == N16_TYPE38 (BEQS38, 0, 0)
|| insn38 == N16_TYPE38 (BNES38, 0, 0))
break;
}
}
/* The optimizer might shove anything into the prologue, if
we build up cache (cache != NULL) from analyzing prologue,
we just skip what we don't recognize and analyze further to
make cache as complete as possible. However, if we skip
prologue, we'll stop immediately on unrecognized
instruction. */
if (cache == NULL)
break;
}
}
return pc;
}
/* Implement the "skip_prologue" gdbarch method.
Find the end of function prologue. */
static CORE_ADDR
nds32_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
{
CORE_ADDR func_addr, limit_pc;
/* See if we can determine the end of the prologue via the symbol table.
If so, then return either PC, or the PC after the prologue, whichever
is greater. */
if (find_pc_partial_function (pc, NULL, &func_addr, NULL))
{
CORE_ADDR post_prologue_pc
= skip_prologue_using_sal (gdbarch, func_addr);
if (post_prologue_pc != 0)
return std::max (pc, post_prologue_pc);
}
/* Can't determine prologue from the symbol table, need to examine
instructions. */
/* Find an upper limit on the function prologue using the debug
information. If the debug information could not be used to provide
that bound, then use an arbitrary large number as the upper bound. */
limit_pc = skip_prologue_using_sal (gdbarch, pc);
if (limit_pc == 0)
limit_pc = pc + 128; /* Magic. */
/* Find the end of prologue. */
return nds32_analyze_prologue (gdbarch, pc, limit_pc, NULL);
}
/* Allocate and fill in *THIS_CACHE with information about the prologue of
*THIS_FRAME. Do not do this if *THIS_CACHE was already allocated. Return
a pointer to the current nds32_frame_cache in *THIS_CACHE. */
static struct nds32_frame_cache *
nds32_frame_cache (struct frame_info *this_frame, void **this_cache)
{
struct gdbarch *gdbarch = get_frame_arch (this_frame);
struct nds32_frame_cache *cache;
CORE_ADDR current_pc;
ULONGEST prev_sp;
ULONGEST this_base;
int i;
if (*this_cache)
return (struct nds32_frame_cache *) *this_cache;
cache = nds32_alloc_frame_cache ();
*this_cache = cache;
cache->pc = get_frame_func (this_frame);
current_pc = get_frame_pc (this_frame);
nds32_analyze_prologue (gdbarch, cache->pc, current_pc, cache);
/* Compute the previous frame's stack pointer (which is also the
frame's ID's stack address), and this frame's base pointer. */
if (cache->fp_offset != INVALID_OFFSET)
{
/* FP is set in prologue, so it can be used to calculate other info. */
this_base = get_frame_register_unsigned (this_frame, NDS32_FP_REGNUM);
prev_sp = this_base + cache->fp_offset;
}
else
{
this_base = get_frame_register_unsigned (this_frame, NDS32_SP_REGNUM);
prev_sp = this_base + cache->sp_offset;
}
cache->prev_sp = prev_sp;
cache->base = this_base;
/* Adjust all the saved registers such that they contain addresses
instead of offsets. */
for (i = 0; i < NDS32_NUM_SAVED_REGS; i++)
if (cache->saved_regs[i] != REG_UNAVAIL)
cache->saved_regs[i] = cache->prev_sp - cache->saved_regs[i];
return cache;
}
/* Implement the "this_id" frame_unwind method.
Our frame ID for a normal frame is the current function's starting
PC and the caller's SP when we were called. */
static void
nds32_frame_this_id (struct frame_info *this_frame,
void **this_cache, struct frame_id *this_id)
{
struct nds32_frame_cache *cache = nds32_frame_cache (this_frame, this_cache);
/* This marks the outermost frame. */
if (cache->prev_sp == 0)
return;
*this_id = frame_id_build (cache->prev_sp, cache->pc);
}
/* Implement the "prev_register" frame_unwind method. */
static struct value *
nds32_frame_prev_register (struct frame_info *this_frame, void **this_cache,
int regnum)
{
struct nds32_frame_cache *cache = nds32_frame_cache (this_frame, this_cache);
if (regnum == NDS32_SP_REGNUM)
return frame_unwind_got_constant (this_frame, regnum, cache->prev_sp);
/* The PC of the previous frame is stored in the LP register of
the current frame. */
if (regnum == NDS32_PC_REGNUM)
regnum = NDS32_LP_REGNUM;
if (regnum < NDS32_NUM_SAVED_REGS && cache->saved_regs[regnum] != REG_UNAVAIL)
return frame_unwind_got_memory (this_frame, regnum,
cache->saved_regs[regnum]);
return frame_unwind_got_register (this_frame, regnum, regnum);
}
static const struct frame_unwind nds32_frame_unwind =
{
NORMAL_FRAME,
default_frame_unwind_stop_reason,
nds32_frame_this_id,
nds32_frame_prev_register,
NULL,
default_frame_sniffer,
};
/* Return the frame base address of *THIS_FRAME. */
static CORE_ADDR
nds32_frame_base_address (struct frame_info *this_frame, void **this_cache)
{
struct nds32_frame_cache *cache = nds32_frame_cache (this_frame, this_cache);
return cache->base;
}
static const struct frame_base nds32_frame_base =
{
&nds32_frame_unwind,
nds32_frame_base_address,
nds32_frame_base_address,
nds32_frame_base_address
};
/* Helper function for instructions used to pop multiple words. */
static void
nds32_pop_multiple_words (struct nds32_frame_cache *cache, int rb, int re,
int enable4)
{
CORE_ADDR sp_offset = cache->sp_offset;
int i;
/* Skip case where re == rb == sp. */
if ((rb < REG_FP) && (re < REG_FP))
{
for (i = rb; i <= re; i++)
{
cache->saved_regs[i] = sp_offset;
sp_offset += 4;
}
}
/* Check FP, GP, LP in enable4. */
for (i = 3; i >= 1; i--)
{
if ((enable4 >> i) & 0x1)
{
cache->saved_regs[NDS32_SP_REGNUM - i] = sp_offset;
sp_offset += 4;
}
}
/* For sp, update the offset. */
cache->sp_offset = sp_offset;
}
/* The instruction sequences in NDS32 epilogue are
INSN_RESET_SP (optional)
(If exists, this must be the first instruction in epilogue
and the stack has not been destroyed.).
INSN_RECOVER (optional).
INSN_RETURN/INSN_RECOVER_RETURN (required). */
/* Helper function for analyzing the given 32-bit INSN. If CACHE is non-NULL,
the necessary information will be recorded. */
static inline int
nds32_analyze_epilogue_insn32 (int abi_use_fpr, uint32_t insn,
struct nds32_frame_cache *cache)
{
if (CHOP_BITS (insn, 15) == N32_TYPE2 (ADDI, REG_SP, REG_SP, 0)
&& N32_IMM15S (insn) > 0)
/* addi $sp, $sp, imm15s */
return INSN_RESET_SP;
else if (CHOP_BITS (insn, 15) == N32_TYPE2 (ADDI, REG_SP, REG_FP, 0)
&& N32_IMM15S (insn) < 0)
/* addi $sp, $fp, imm15s */
return INSN_RESET_SP;
else if ((insn & ~(__MASK (19) << 6)) == N32_LMW_BIM
&& N32_RA5 (insn) == REG_SP)
{
/* lmw.bim Rb, [$sp], Re, enable4 */
if (cache != NULL)
nds32_pop_multiple_words (cache, N32_RT5 (insn),
N32_RB5 (insn), N32_LSMW_ENABLE4 (insn));
return INSN_RECOVER;
}
else if (insn == N32_JREG (JR, 0, REG_LP, 0, 1))
/* ret $lp */
return INSN_RETURN;
else if (insn == N32_ALU1 (ADD, REG_SP, REG_SP, REG_TA)
|| insn == N32_ALU1 (ADD, REG_SP, REG_TA, REG_SP))
/* add $sp, $sp, $ta */
/* add $sp, $ta, $sp */
return INSN_RESET_SP;
else if (abi_use_fpr
&& (insn & ~(__MASK (5) << 20 | __MASK (13))) == N32_FLDI_SP)
{
if (__GF (insn, 12, 1) == 0)
/* fldi FDt, [$sp + (imm12s << 2)] */
return INSN_RECOVER;
else
{
/* fldi.bi FDt, [$sp], (imm12s << 2) */
int offset = N32_IMM12S (insn) << 2;
if (offset == 8 || offset == 12)
{
if (cache != NULL)
cache->sp_offset += offset;
return INSN_RECOVER;
}
}
}
return INSN_NORMAL;
}
/* Helper function for analyzing the given 16-bit INSN. If CACHE is non-NULL,
the necessary information will be recorded. */
static inline int
nds32_analyze_epilogue_insn16 (uint32_t insn, struct nds32_frame_cache *cache)
{
if (insn == N16_TYPE5 (RET5, REG_LP))
/* ret5 $lp */
return INSN_RETURN;
else if (CHOP_BITS (insn, 10) == N16_TYPE10 (ADDI10S, 0))
{
/* addi10s.sp */
int imm10s = N16_IMM10S (insn);
if (imm10s > 0)
{
if (cache != NULL)
cache->sp_offset += imm10s;
return INSN_RECOVER;
}
}
else if (__GF (insn, 7, 8) == N16_T25_POP25)
{
/* pop25 */
if (cache != NULL)
{
int imm8u = (insn & 0x1f) << 3;
int re = (insn >> 5) & 0x3;
const int reg_map[] = { 6, 8, 10, 14 };
/* Operation 1 -- sp = sp + (imm5u << 3) */
cache->sp_offset += imm8u;
/* Operation 2 -- lmw.bim R6, [$sp], Re, #0xe */
nds32_pop_multiple_words (cache, 6, reg_map[re], 0xe);
}
/* Operation 3 -- ret $lp */
return INSN_RECOVER_RETURN;
}
return INSN_NORMAL;
}
/* Analyze a reasonable amount of instructions from the given PC to find
the instruction used to return to the caller. Return 1 if the 'return'
instruction could be found, 0 otherwise.
If CACHE is non-NULL, fill it in. */
static int
nds32_analyze_epilogue (struct gdbarch *gdbarch, CORE_ADDR pc,
struct nds32_frame_cache *cache)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
int abi_use_fpr = nds32_abi_use_fpr (tdep->elf_abi);
CORE_ADDR limit_pc;
uint32_t insn, insn_len;
int insn_type = INSN_NORMAL;
if (abi_use_fpr)
limit_pc = pc + 48;
else
limit_pc = pc + 16;
for (; pc < limit_pc; pc += insn_len)
{
insn = read_memory_unsigned_integer (pc, 4, BFD_ENDIAN_BIG);
if ((insn & 0x80000000) == 0)
{
/* 32-bit instruction */
insn_len = 4;
insn_type = nds32_analyze_epilogue_insn32 (abi_use_fpr, insn, cache);
if (insn_type == INSN_RETURN)
return 1;
else if (insn_type == INSN_RECOVER)
continue;
}
else
{
/* 16-bit instruction */
insn_len = 2;
insn >>= 16;
insn_type = nds32_analyze_epilogue_insn16 (insn, cache);
if (insn_type == INSN_RETURN || insn_type == INSN_RECOVER_RETURN)
return 1;
else if (insn_type == INSN_RECOVER)
continue;
}
/* Stop the scan if this is an unexpected instruction. */
break;
}
return 0;
}
/* Implement the "stack_frame_destroyed_p" gdbarch method. */
static int
nds32_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR addr)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
int abi_use_fpr = nds32_abi_use_fpr (tdep->elf_abi);
int insn_type = INSN_NORMAL;
int ret_found = 0;
uint32_t insn;
insn = read_memory_unsigned_integer (addr, 4, BFD_ENDIAN_BIG);
if ((insn & 0x80000000) == 0)
{
/* 32-bit instruction */
insn_type = nds32_analyze_epilogue_insn32 (abi_use_fpr, insn, NULL);
}
else
{
/* 16-bit instruction */
insn >>= 16;
insn_type = nds32_analyze_epilogue_insn16 (insn, NULL);
}
if (insn_type == INSN_NORMAL || insn_type == INSN_RESET_SP)
return 0;
/* Search the required 'return' instruction within the following reasonable
instructions. */
ret_found = nds32_analyze_epilogue (gdbarch, addr, NULL);
if (ret_found == 0)
return 0;
/* Scan backwards to make sure that the last instruction has adjusted
stack. Both a 16-bit and a 32-bit instruction will be tried. This is
just a heuristic, so the false positives will be acceptable. */
insn = read_memory_unsigned_integer (addr - 2, 4, BFD_ENDIAN_BIG);
/* Only 16-bit instructions are possible at addr - 2. */
if ((insn & 0x80000000) != 0)
{
/* This may be a 16-bit instruction or part of a 32-bit instruction. */
insn_type = nds32_analyze_epilogue_insn16 (insn >> 16, NULL);
if (insn_type == INSN_RECOVER)
return 1;
}
insn = read_memory_unsigned_integer (addr - 4, 4, BFD_ENDIAN_BIG);
/* If this is a 16-bit instruction at addr - 4, then there must be another
16-bit instruction at addr - 2, so only 32-bit instructions need to
be analyzed here. */
if ((insn & 0x80000000) == 0)
{
/* This may be a 32-bit instruction or part of a 32-bit instruction. */
insn_type = nds32_analyze_epilogue_insn32 (abi_use_fpr, insn, NULL);
if (insn_type == INSN_RECOVER || insn_type == INSN_RESET_SP)
return 1;
}
return 0;
}
/* Implement the "sniffer" frame_unwind method. */
static int
nds32_epilogue_frame_sniffer (const struct frame_unwind *self,
struct frame_info *this_frame, void **this_cache)
{
if (frame_relative_level (this_frame) == 0)
return nds32_stack_frame_destroyed_p (get_frame_arch (this_frame),
get_frame_pc (this_frame));
else
return 0;
}
/* Allocate and fill in *THIS_CACHE with information needed to unwind
*THIS_FRAME within epilogue. Do not do this if *THIS_CACHE was already
allocated. Return a pointer to the current nds32_frame_cache in
*THIS_CACHE. */
static struct nds32_frame_cache *
nds32_epilogue_frame_cache (struct frame_info *this_frame, void **this_cache)
{
struct gdbarch *gdbarch = get_frame_arch (this_frame);
struct nds32_frame_cache *cache;
CORE_ADDR current_pc, current_sp;
int i;
if (*this_cache)
return (struct nds32_frame_cache *) *this_cache;
cache = nds32_alloc_frame_cache ();
*this_cache = cache;
cache->pc = get_frame_func (this_frame);
current_pc = get_frame_pc (this_frame);
nds32_analyze_epilogue (gdbarch, current_pc, cache);
current_sp = get_frame_register_unsigned (this_frame, NDS32_SP_REGNUM);
cache->prev_sp = current_sp + cache->sp_offset;
/* Adjust all the saved registers such that they contain addresses
instead of offsets. */
for (i = 0; i < NDS32_NUM_SAVED_REGS; i++)
if (cache->saved_regs[i] != REG_UNAVAIL)
cache->saved_regs[i] = current_sp + cache->saved_regs[i];
return cache;
}
/* Implement the "this_id" frame_unwind method. */
static void
nds32_epilogue_frame_this_id (struct frame_info *this_frame,
void **this_cache, struct frame_id *this_id)
{
struct nds32_frame_cache *cache
= nds32_epilogue_frame_cache (this_frame, this_cache);
/* This marks the outermost frame. */
if (cache->prev_sp == 0)
return;
*this_id = frame_id_build (cache->prev_sp, cache->pc);
}
/* Implement the "prev_register" frame_unwind method. */
static struct value *
nds32_epilogue_frame_prev_register (struct frame_info *this_frame,
void **this_cache, int regnum)
{
struct nds32_frame_cache *cache
= nds32_epilogue_frame_cache (this_frame, this_cache);
if (regnum == NDS32_SP_REGNUM)
return frame_unwind_got_constant (this_frame, regnum, cache->prev_sp);
/* The PC of the previous frame is stored in the LP register of
the current frame. */
if (regnum == NDS32_PC_REGNUM)
regnum = NDS32_LP_REGNUM;
if (regnum < NDS32_NUM_SAVED_REGS && cache->saved_regs[regnum] != REG_UNAVAIL)
return frame_unwind_got_memory (this_frame, regnum,
cache->saved_regs[regnum]);
return frame_unwind_got_register (this_frame, regnum, regnum);
}
static const struct frame_unwind nds32_epilogue_frame_unwind =
{
NORMAL_FRAME,
default_frame_unwind_stop_reason,
nds32_epilogue_frame_this_id,
nds32_epilogue_frame_prev_register,
NULL,
nds32_epilogue_frame_sniffer
};
/* Implement the "dummy_id" gdbarch method. */
static struct frame_id
nds32_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame)
{
CORE_ADDR sp = get_frame_register_unsigned (this_frame, NDS32_SP_REGNUM);
return frame_id_build (sp, get_frame_pc (this_frame));
}
/* Implement the "unwind_pc" gdbarch method. */
static CORE_ADDR
nds32_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
{
return frame_unwind_register_unsigned (next_frame, NDS32_PC_REGNUM);
}
/* Implement the "unwind_sp" gdbarch method. */
static CORE_ADDR
nds32_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
{
return frame_unwind_register_unsigned (next_frame, NDS32_SP_REGNUM);
}
/* Floating type and struct type that has only one floating type member
can pass value using FPU registers (when FPU ABI is used). */
static int
nds32_check_calling_use_fpr (struct type *type)
{
struct type *t;
enum type_code typecode;
t = type;
while (1)
{
t = check_typedef (t);
typecode = TYPE_CODE (t);
if (typecode != TYPE_CODE_STRUCT)
break;
else if (TYPE_NFIELDS (t) != 1)
return 0;
else
t = TYPE_FIELD_TYPE (t, 0);
}
return typecode == TYPE_CODE_FLT;
}
/* Return the alignment (in bytes) of the given type. */
static int
nds32_type_align (struct type *type)
{
int n;
int align;
int falign;
type = check_typedef (type);
switch (TYPE_CODE (type))
{
default:
/* Should never happen. */
internal_error (__FILE__, __LINE__, _("unknown type alignment"));
return 4;
case TYPE_CODE_PTR:
case TYPE_CODE_ENUM:
case TYPE_CODE_INT:
case TYPE_CODE_FLT:
case TYPE_CODE_SET:
case TYPE_CODE_RANGE:
case TYPE_CODE_REF:
case TYPE_CODE_CHAR:
case TYPE_CODE_BOOL:
return TYPE_LENGTH (type);
case TYPE_CODE_ARRAY:
case TYPE_CODE_COMPLEX:
return nds32_type_align (TYPE_TARGET_TYPE (type));
case TYPE_CODE_STRUCT:
case TYPE_CODE_UNION:
align = 1;
for (n = 0; n < TYPE_NFIELDS (type); n++)
{
falign = nds32_type_align (TYPE_FIELD_TYPE (type, n));
if (falign > align)
align = falign;
}
return align;
}
}
/* Implement the "push_dummy_call" gdbarch method. */
static CORE_ADDR
nds32_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
struct regcache *regcache, CORE_ADDR bp_addr,
int nargs, struct value **args, CORE_ADDR sp,
int struct_return, CORE_ADDR struct_addr)
{
const int REND = 6; /* End for register offset. */
int goff = 0; /* Current gpr offset for argument. */
int foff = 0; /* Current fpr offset for argument. */
int soff = 0; /* Current stack offset for argument. */
int i;
ULONGEST regval;
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
struct type *func_type = value_type (function);
int abi_use_fpr = nds32_abi_use_fpr (tdep->elf_abi);
int abi_split = nds32_abi_split (tdep->elf_abi);
/* Set the return address. For the NDS32, the return breakpoint is
always at BP_ADDR. */
regcache_cooked_write_unsigned (regcache, NDS32_LP_REGNUM, bp_addr);
/* If STRUCT_RETURN is true, then the struct return address (in
STRUCT_ADDR) will consume the first argument-passing register.
Both adjust the register count and store that value. */
if (struct_return)
{
regcache_cooked_write_unsigned (regcache, NDS32_R0_REGNUM, struct_addr);
goff++;
}
/* Now make sure there's space on the stack */
for (i = 0; i < nargs; i++)
{
struct type *type = value_type (args[i]);
int align = nds32_type_align (type);
/* If align is zero, it may be an empty struct.
Just ignore the argument of empty struct. */
if (align == 0)
continue;
sp -= TYPE_LENGTH (type);
sp = align_down (sp, align);
}
/* Stack must be 8-byte aligned. */
sp = align_down (sp, 8);
soff = 0;
for (i = 0; i < nargs; i++)
{
const gdb_byte *val;
int align, len;
struct type *type;
int calling_use_fpr;
int use_fpr = 0;
type = value_type (args[i]);
calling_use_fpr = nds32_check_calling_use_fpr (type);
len = TYPE_LENGTH (type);
align = nds32_type_align (type);
val = value_contents (args[i]);
/* The size of a composite type larger than 4 bytes will be rounded
up to the nearest multiple of 4. */
if (len > 4)
len = align_up (len, 4);
/* Variadic functions are handled differently between AABI and ABI2FP+.
For AABI, the caller pushes arguments in registers, callee stores
unnamed arguments in stack, and then va_arg fetch arguments in stack.
Therefore, we don't have to handle variadic functions specially.
For ABI2FP+, the caller pushes only named arguments in registers
and pushes all unnamed arguments in stack. */
if (abi_use_fpr && TYPE_VARARGS (func_type)
&& i >= TYPE_NFIELDS (func_type))
goto use_stack;
/* Try to use FPRs to pass arguments only when
1. The program is built using toolchain with FPU support.
2. The type of this argument can use FPR to pass value. */
use_fpr = abi_use_fpr && calling_use_fpr;
if (use_fpr)
{
if (tdep->fpu_freg == -1)
goto error_no_fpr;
/* Adjust alignment. */
if ((align >> 2) > 0)
foff = align_up (foff, align >> 2);
if (foff < REND)
{
switch (len)
{
case 4:
regcache_cooked_write (regcache,
tdep->fs0_regnum + foff, val);
foff++;
break;
case 8:
regcache_cooked_write (regcache,
NDS32_FD0_REGNUM + (foff >> 1), val);
foff += 2;
break;
default:
/* Long double? */
internal_error (__FILE__, __LINE__,
"Do not know how to handle %d-byte double.\n",
len);
break;
}
continue;
}
}
else
{
/*
When passing arguments using GPRs,
* A composite type not larger than 4 bytes is passed in $rN.
The format is as if the value is loaded with load instruction
of corresponding size (e.g., LB, LH, LW).
For example,
r0
31 0
LITTLE: [x x b a]
BIG: [x x a b]
* Otherwise, a composite type is passed in consecutive registers.
The size is rounded up to the nearest multiple of 4.
The successive registers hold the parts of the argument as if
were loaded using lmw instructions.
For example,
r0 r1
31 0 31 0
LITTLE: [d c b a] [x x x e]
BIG: [a b c d] [e x x x]
*/
/* Adjust alignment. */
if ((align >> 2) > 0)
goff = align_up (goff, align >> 2);
if (len <= (REND - goff) * 4)
{
/* This argument can be passed wholly via GPRs. */
while (len > 0)
{
regval = extract_unsigned_integer (val, (len > 4) ? 4 : len,
byte_order);
regcache_cooked_write_unsigned (regcache,
NDS32_R0_REGNUM + goff,
regval);
len -= 4;
val += 4;
goff++;
}
continue;
}
else if (abi_split)
{
/* Some parts of this argument can be passed via GPRs. */
while (goff < REND)
{
regval = extract_unsigned_integer (val, (len > 4) ? 4 : len,
byte_order);
regcache_cooked_write_unsigned (regcache,
NDS32_R0_REGNUM + goff,
regval);
len -= 4;
val += 4;
goff++;
}
}
}
use_stack:
/*
When pushing (split parts of) an argument into stack,
* A composite type not larger than 4 bytes is copied to different
base address.
In little-endian, the first byte of this argument is aligned
at the low address of the next free word.
In big-endian, the last byte of this argument is aligned
at the high address of the next free word.
For example,
sp [ - ] [ c ] hi
[ c ] [ b ]
[ b ] [ a ]
[ a ] [ - ] lo
LITTLE BIG
*/
/* Adjust alignment. */
soff = align_up (soff, align);
while (len > 0)
{
int rlen = (len > 4) ? 4 : len;
if (byte_order == BFD_ENDIAN_BIG)
write_memory (sp + soff + 4 - rlen, val, rlen);
else
write_memory (sp + soff, val, rlen);
len -= 4;
val += 4;
soff += 4;
}
}
/* Finally, update the SP register. */
regcache_cooked_write_unsigned (regcache, NDS32_SP_REGNUM, sp);
return sp;
error_no_fpr:
/* If use_fpr, but no floating-point register exists,
then it is an error. */
error (_("Fail to call. FPU registers are required."));
}
/* Read, for architecture GDBARCH, a function return value of TYPE
from REGCACHE, and copy that into VALBUF. */
static void
nds32_extract_return_value (struct gdbarch *gdbarch, struct type *type,
struct regcache *regcache, gdb_byte *valbuf)
{
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
int abi_use_fpr = nds32_abi_use_fpr (tdep->elf_abi);
int calling_use_fpr;
int len;
calling_use_fpr = nds32_check_calling_use_fpr (type);
len = TYPE_LENGTH (type);
if (abi_use_fpr && calling_use_fpr)
{
if (len == 4)
regcache_cooked_read (regcache, tdep->fs0_regnum, valbuf);
else if (len == 8)
regcache_cooked_read (regcache, NDS32_FD0_REGNUM, valbuf);
else
internal_error (__FILE__, __LINE__,
_("Cannot extract return value of %d bytes "
"long floating-point."), len);
}
else
{
/*
When returning result,
* A composite type not larger than 4 bytes is returned in $r0.
The format is as if the result is loaded with load instruction
of corresponding size (e.g., LB, LH, LW).
For example,
r0
31 0
LITTLE: [x x b a]
BIG: [x x a b]
* Otherwise, a composite type not larger than 8 bytes is returned
in $r0 and $r1.
In little-endian, the first word is loaded in $r0.
In big-endian, the last word is loaded in $r1.
For example,
r0 r1
31 0 31 0
LITTLE: [d c b a] [x x x e]
BIG: [x x x a] [b c d e]
*/
ULONGEST tmp;
if (len < 4)
{
/* By using store_unsigned_integer we avoid having to do
anything special for small big-endian values. */
regcache_cooked_read_unsigned (regcache, NDS32_R0_REGNUM, &tmp);
store_unsigned_integer (valbuf, len, byte_order, tmp);
}
else if (len == 4)
{
regcache_cooked_read (regcache, NDS32_R0_REGNUM, valbuf);
}
else if (len < 8)
{
int len1, len2;
len1 = byte_order == BFD_ENDIAN_BIG ? len - 4 : 4;
len2 = len - len1;
regcache_cooked_read_unsigned (regcache, NDS32_R0_REGNUM, &tmp);
store_unsigned_integer (valbuf, len1, byte_order, tmp);
regcache_cooked_read_unsigned (regcache, NDS32_R0_REGNUM + 1, &tmp);
store_unsigned_integer (valbuf + len1, len2, byte_order, tmp);
}
else
{
regcache_cooked_read (regcache, NDS32_R0_REGNUM, valbuf);
regcache_cooked_read (regcache, NDS32_R0_REGNUM + 1, valbuf + 4);
}
}
}
/* Write, for architecture GDBARCH, a function return value of TYPE
from VALBUF into REGCACHE. */
static void
nds32_store_return_value (struct gdbarch *gdbarch, struct type *type,
struct regcache *regcache, const gdb_byte *valbuf)
{
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
int abi_use_fpr = nds32_abi_use_fpr (tdep->elf_abi);
int calling_use_fpr;
int len;
calling_use_fpr = nds32_check_calling_use_fpr (type);
len = TYPE_LENGTH (type);
if (abi_use_fpr && calling_use_fpr)
{
if (len == 4)
regcache_cooked_write (regcache, tdep->fs0_regnum, valbuf);
else if (len == 8)
regcache_cooked_write (regcache, NDS32_FD0_REGNUM, valbuf);
else
internal_error (__FILE__, __LINE__,
_("Cannot store return value of %d bytes "
"long floating-point."), len);
}
else
{
ULONGEST regval;
if (len < 4)
{
regval = extract_unsigned_integer (valbuf, len, byte_order);
regcache_cooked_write_unsigned (regcache, NDS32_R0_REGNUM, regval);
}
else if (len == 4)
{
regcache_cooked_write (regcache, NDS32_R0_REGNUM, valbuf);
}
else if (len < 8)
{
int len1, len2;
len1 = byte_order == BFD_ENDIAN_BIG ? len - 4 : 4;
len2 = len - len1;
regval = extract_unsigned_integer (valbuf, len1, byte_order);
regcache_cooked_write_unsigned (regcache, NDS32_R0_REGNUM, regval);
regval = extract_unsigned_integer (valbuf + len1, len2, byte_order);
regcache_cooked_write_unsigned (regcache, NDS32_R0_REGNUM + 1,
regval);
}
else
{
regcache_cooked_write (regcache, NDS32_R0_REGNUM, valbuf);
regcache_cooked_write (regcache, NDS32_R0_REGNUM + 1, valbuf + 4);
}
}
}
/* Implement the "return_value" gdbarch method.
Determine, for architecture GDBARCH, how a return value of TYPE
should be returned. If it is supposed to be returned in registers,
and READBUF is non-zero, read the appropriate value from REGCACHE,
and copy it into READBUF. If WRITEBUF is non-zero, write the value
from WRITEBUF into REGCACHE. */
static enum return_value_convention
nds32_return_value (struct gdbarch *gdbarch, struct value *func_type,
struct type *type, struct regcache *regcache,
gdb_byte *readbuf, const gdb_byte *writebuf)
{
if (TYPE_LENGTH (type) > 8)
{
return RETURN_VALUE_STRUCT_CONVENTION;
}
else
{
if (readbuf != NULL)
nds32_extract_return_value (gdbarch, type, regcache, readbuf);
if (writebuf != NULL)
nds32_store_return_value (gdbarch, type, regcache, writebuf);
return RETURN_VALUE_REGISTER_CONVENTION;
}
}
/* Implement the "get_longjmp_target" gdbarch method. */
static int
nds32_get_longjmp_target (struct frame_info *frame, CORE_ADDR *pc)
{
gdb_byte buf[4];
CORE_ADDR jb_addr;
struct gdbarch *gdbarch = get_frame_arch (frame);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
jb_addr = get_frame_register_unsigned (frame, NDS32_R0_REGNUM);
if (target_read_memory (jb_addr + 11 * 4, buf, 4))
return 0;
*pc = extract_unsigned_integer (buf, 4, byte_order);
return 1;
}
/* Validate the given TDESC, and fixed-number some registers in it.
Return 0 if the given TDESC does not contain the required feature
or not contain required registers. */
static int
nds32_validate_tdesc_p (const struct target_desc *tdesc,
struct tdesc_arch_data *tdesc_data,
int *fpu_freg, int *use_pseudo_fsrs)
{
const struct tdesc_feature *feature;
int i, valid_p;
feature = tdesc_find_feature (tdesc, "org.gnu.gdb.nds32.core");
if (feature == NULL)
return 0;
valid_p = 1;
/* Validate and fixed-number R0-R10. */
for (i = NDS32_R0_REGNUM; i <= NDS32_R0_REGNUM + 10; i++)
valid_p &= tdesc_numbered_register (feature, tdesc_data, i,
nds32_register_names[i]);
/* Validate R15. */
valid_p &= tdesc_unnumbered_register (feature,
nds32_register_names[NDS32_TA_REGNUM]);
/* Validate and fixed-number FP, GP, LP, SP, PC. */
for (i = NDS32_FP_REGNUM; i <= NDS32_PC_REGNUM; i++)
valid_p &= tdesc_numbered_register (feature, tdesc_data, i,
nds32_register_names[i]);
if (!valid_p)
return 0;
/* Fixed-number R11-R27. */
for (i = NDS32_R0_REGNUM + 11; i <= NDS32_R0_REGNUM + 27; i++)
tdesc_numbered_register (feature, tdesc_data, i, nds32_register_names[i]);
feature = tdesc_find_feature (tdesc, "org.gnu.gdb.nds32.fpu");
if (feature != NULL)
{
int num_fdr_regs, num_fsr_regs, fs0_regnum, num_listed_fsr;
int freg = -1;
/* Guess FPU configuration via listed registers. */
if (tdesc_unnumbered_register (feature, "fd31"))
freg = 3;
else if (tdesc_unnumbered_register (feature, "fd15"))
freg = 2;
else if (tdesc_unnumbered_register (feature, "fd7"))
freg = 1;
else if (tdesc_unnumbered_register (feature, "fd3"))
freg = 0;
if (freg == -1)
/* Required FDR is not found. */
return 0;
else
*fpu_freg = freg;
/* Validate and fixed-number required FDRs. */
num_fdr_regs = num_fdr_map[freg];
for (i = 0; i < num_fdr_regs; i++)
valid_p &= tdesc_numbered_register (feature, tdesc_data,
NDS32_FD0_REGNUM + i,
nds32_fdr_register_names[i]);
if (!valid_p)
return 0;
/* Count the number of listed FSRs, and fixed-number them if present. */
num_fsr_regs = num_fsr_map[freg];
fs0_regnum = NDS32_FD0_REGNUM + num_fdr_regs;
num_listed_fsr = 0;
for (i = 0; i < num_fsr_regs; i++)
num_listed_fsr += tdesc_numbered_register (feature, tdesc_data,
fs0_regnum + i,
nds32_fsr_register_names[i]);
if (num_listed_fsr == 0)
/* No required FSRs are listed explicitly, make them pseudo registers
of FDRs. */
*use_pseudo_fsrs = 1;
else if (num_listed_fsr == num_fsr_regs)
/* All required FSRs are listed explicitly. */
*use_pseudo_fsrs = 0;
else
/* Some required FSRs are missing. */
return 0;
}
return 1;
}
/* Initialize the current architecture based on INFO. If possible,
re-use an architecture from ARCHES, which is a list of
architectures already created during this debugging session.
Called e.g. at program startup, when reading a core file, and when
reading a binary file. */
static struct gdbarch *
nds32_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
struct gdbarch *gdbarch;
struct gdbarch_tdep *tdep;
struct gdbarch_list *best_arch;
struct tdesc_arch_data *tdesc_data = NULL;
const struct target_desc *tdesc = info.target_desc;
int elf_abi = E_NDS_ABI_AABI;
int fpu_freg = -1;
int use_pseudo_fsrs = 0;
int i, num_regs, maxregs;
/* Extract the elf_flags if available. */
if (info.abfd && bfd_get_flavour (info.abfd) == bfd_target_elf_flavour)
elf_abi = elf_elfheader (info.abfd)->e_flags & EF_NDS_ABI;
/* If there is already a candidate, use it. */
for (best_arch = gdbarch_list_lookup_by_info (arches, &info);
best_arch != NULL;
best_arch = gdbarch_list_lookup_by_info (best_arch->next, &info))
{
struct gdbarch_tdep *idep = gdbarch_tdep (best_arch->gdbarch);
if (idep->elf_abi != elf_abi)
continue;
/* Found a match. */
break;
}
if (best_arch != NULL)
return best_arch->gdbarch;
if (!tdesc_has_registers (tdesc))
tdesc = tdesc_nds32;
tdesc_data = tdesc_data_alloc ();
if (!nds32_validate_tdesc_p (tdesc, tdesc_data, &fpu_freg, &use_pseudo_fsrs))
{
tdesc_data_cleanup (tdesc_data);
return NULL;
}
/* Allocate space for the new architecture. */
tdep = XCNEW (struct gdbarch_tdep);
tdep->fpu_freg = fpu_freg;
tdep->use_pseudo_fsrs = use_pseudo_fsrs;
tdep->fs0_regnum = -1;
tdep->elf_abi = elf_abi;
gdbarch = gdbarch_alloc (&info, tdep);
set_gdbarch_wchar_bit (gdbarch, 16);
set_gdbarch_wchar_signed (gdbarch, 0);
if (fpu_freg == -1)
num_regs = NDS32_NUM_REGS;
else if (use_pseudo_fsrs == 1)
{
set_gdbarch_pseudo_register_read (gdbarch, nds32_pseudo_register_read);
set_gdbarch_pseudo_register_write (gdbarch, nds32_pseudo_register_write);
set_tdesc_pseudo_register_name (gdbarch, nds32_pseudo_register_name);
set_tdesc_pseudo_register_type (gdbarch, nds32_pseudo_register_type);
set_gdbarch_num_pseudo_regs (gdbarch, num_fsr_map[fpu_freg]);
num_regs = NDS32_NUM_REGS + num_fdr_map[fpu_freg];
}
else
num_regs = NDS32_NUM_REGS + num_fdr_map[fpu_freg] + num_fsr_map[fpu_freg];
set_gdbarch_num_regs (gdbarch, num_regs);
tdesc_use_registers (gdbarch, tdesc, tdesc_data);
/* Cache the register number of fs0. */
if (fpu_freg != -1)
tdep->fs0_regnum = user_reg_map_name_to_regnum (gdbarch, "fs0", -1);
/* Add NDS32 register aliases. To avoid search in user register name space,
user_reg_map_name_to_regnum is not used. */
maxregs = (gdbarch_num_regs (gdbarch) + gdbarch_num_pseudo_regs (gdbarch));
for (i = 0; i < ARRAY_SIZE (nds32_register_aliases); i++)
{
int regnum, j;
regnum = -1;
/* Search register name space. */
for (j = 0; j < maxregs; j++)
{
const char *regname = gdbarch_register_name (gdbarch, j);
if (regname != NULL
&& strcmp (regname, nds32_register_aliases[i].name) == 0)
{
regnum = j;
break;
}
}
/* Try next alias entry if the given name can not be found in register
name space. */
if (regnum == -1)
continue;
user_reg_add (gdbarch, nds32_register_aliases[i].alias,
value_of_nds32_reg, (const void *) (intptr_t) regnum);
}
nds32_add_reggroups (gdbarch);
/* Hook in ABI-specific overrides, if they have been registered. */
info.tdesc_data = tdesc_data;
gdbarch_init_osabi (info, gdbarch);
/* Override tdesc_register callbacks for system registers. */
set_gdbarch_register_reggroup_p (gdbarch, nds32_register_reggroup_p);
set_gdbarch_sp_regnum (gdbarch, NDS32_SP_REGNUM);
set_gdbarch_pc_regnum (gdbarch, NDS32_PC_REGNUM);
set_gdbarch_unwind_sp (gdbarch, nds32_unwind_sp);
set_gdbarch_unwind_pc (gdbarch, nds32_unwind_pc);
set_gdbarch_stack_frame_destroyed_p (gdbarch, nds32_stack_frame_destroyed_p);
set_gdbarch_dwarf2_reg_to_regnum (gdbarch, nds32_dwarf2_reg_to_regnum);
set_gdbarch_push_dummy_call (gdbarch, nds32_push_dummy_call);
set_gdbarch_return_value (gdbarch, nds32_return_value);
set_gdbarch_dummy_id (gdbarch, nds32_dummy_id);
set_gdbarch_skip_prologue (gdbarch, nds32_skip_prologue);
set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
set_gdbarch_breakpoint_kind_from_pc (gdbarch,
nds32_breakpoint::kind_from_pc);
set_gdbarch_sw_breakpoint_from_kind (gdbarch,
nds32_breakpoint::bp_from_kind);
set_gdbarch_frame_align (gdbarch, nds32_frame_align);
frame_base_set_default (gdbarch, &nds32_frame_base);
/* Handle longjmp. */
set_gdbarch_get_longjmp_target (gdbarch, nds32_get_longjmp_target);
/* The order of appending is the order it check frame. */
dwarf2_append_unwinders (gdbarch);
frame_unwind_append_unwinder (gdbarch, &nds32_epilogue_frame_unwind);
frame_unwind_append_unwinder (gdbarch, &nds32_frame_unwind);
return gdbarch;
}
void
_initialize_nds32_tdep (void)
{
/* Initialize gdbarch. */
register_gdbarch_init (bfd_arch_nds32, nds32_gdbarch_init);
initialize_tdesc_nds32 ();
nds32_init_reggroups ();
}
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