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63807e1d0d
PR build/9877: * alpha-linux-tdep.c (alpha_linux_regset_from_core_section): Make it static. * alpha-osf1-tdep.c (_initialize_alpha_osf1_tdep): Declare. * amd64fbsd-tdep.c (amd64fbsd_init_abi): Make it static. * amd64nbsd-tdep.c (_initialize_amd64nbsd_ndep): Rename to ... (_initialize_amd64nbsd_tdep): ... this. * arm-linux-tdep.c (arm_linux_software_single_step): Make it static. (_initialize_arm_linux_tdep): Declare. * armbsd-tdep.c (armbsd_fpreg_offset): Make it static. * armnbsd-tdep.c (_initialize_arm_netbsd_tdep): Declare. * armobsd-tdep.c (_initialize_armobsd_tdep): Declare. * avr-tdep.c (avr_return_value): Make it static. (avr_frame_unwind_cache): Ditto. * bsd-uthread.c (bsd_uthread_inferior_created): Ditto. (bsd_uthread_solib_loaded): Ditto. (bsd_uthread_solib_unloaded): Ditto. (bsd_uthread_target): Ditto. (_initialize_bsd_uthread): Declare. * cris-tdep.c (crisv32_single_step_through_delay): Make it static. (cris_frame_unwind_cache): Ditto. * frv-tdep.c (frv_return_value): Ditto. * h8300-tdep.c (h8300_use_struct_convention): Ditto. (h8300h_use_struct_convention): Ditto. * hppa-tdep.c (hppa_sign_extend, hppa_low_hppa_sign_extend): Ditto. * hppa-tdep.h (hppa_low_sign_extend, hppa_sign_extend): Delete declarations. * hppabsd-tdep.c: Include hppabsd-tdep.h. (hppabsd_find_global_pointer): Make it static. * hppabsd-tdep.h: New. * hppanbsd-tdep.c: Include hppabsd-tdep.h. (hppabsd_init_abi): Remove declaration. (_initialize_hppabsd_tdep): Remove declaration. (_initialize_hppanbsd_tdep): Declare. * hppaobsd-tdep.c: Include hppabsd-tdep.h. (hppabsd_init_abi): Delete declaration. (hppaobsd_init_abi): Make it static. * i386-nto-tdep.c (_initialize_i386nto_tdep): Declare. * i386nbsd-tdep.c (_initialize_i386nbsd_tdep): Declare. * ia64-linux-tdep.c (_initialize_ia64_linux_tdep): Declare. * ia64-tdep.c (ia64_register_reggroup_p): Make it static. * iq2000-tdep.c (_initialize_iq2000_tdep): Declare. * m32c-tdep.c (m32c_register_reggroup_p): Make it static. (m32c_analyze_prologue, m32c_virtual_frame_pointer): Ditto. (_initialize_m32c_tdep): Declare. * m32r-rom.c (_initialize_m32r_rom): Declare. * m32r-tdep.c (m32r_skip_prologue): Make it static. (m32r_return_value): Ditto. * m68hc11-tdep.c (m68hc11_frame_unwind_cache): Make it static. (m68hc11_return_value): Ditto. * m68klinux-tdep.c (_initialize_m68k_linux_tdep): Declare. * m88k-tdep.c (m88k_frame_cache): Make it static. * mep-tdep.c (mep_gdb_print_insn): Ditto. (mep_return_value): Ditto. (_initialize_mep_tdep): Declare. * mips-irix-tdep.c (_initialize_mips_irix_tdep): Declare. * mips-linux-tdep.c (supply_64bit_reg): Make it static. (mips_linux_syscall_next_pc): Ditto. (_initialize_mips_linux_tdep): Declare. * mips-tdep.c (mips_single_step_through_delay): Make it static. * mipsnbsd-tdep.c (_initialize_mipsnbsd_tdep): Declare. * mn10300-linux-tdep.c (_initialize_mn10300_linux_tdep): Declare. * mn10300-tdep.c (_initialize_mn10300_tdep): Declare. * mt-tdep.c (_initialize_mt_tdep): Declare. * nbsd-tdep.c: Include nbsd-tdep.h. * nto-tdep.c (find_load_phdr): Make it static. (_initialize_nto_tdep): Declare. * ppc-linux-tdep.c (ppc_linux_memory_remove_breakpoint): Make it static. (_initialize_ppc_linux_tdep): Declare. * remote-m32r-sdi.c (m32r_can_use_hw_watchpoint) (m32r_insert_watchpoint, m32r_remove_watchpoint) (m32r_stopped_data_address, m32r_stopped_by_watchpoint): Make static. * rs6000-aix-tdep.c (_initialize_rs6000_aix_tdep): Declare. * rs6000-nat.c: Include xcoffread.h. (find_toc_address): Don't extern declare get_toc_offset. Adjust to call xcoff_get_to_offset. * rs6000-tdep.c (ppc_vsx_support_p, ppc_displaced_step_fixup) (rs6000_skip_main_prologue, rs6000_in_solib_return_trampoline) (rs6000_skip_trampoline_code): Make static. * s390-tdep.c (s390_regset_from_core_section): Ditto. * sh-tdep.c (sh_register_reggroup_p): Ditto. * shnbsd-tdep.c (shnbsd_regset_from_core_section): Ditto. (_initialize_shnbsd_tdep): Declare. * solib-frv.c (displacement_from_map): Make static. (_initialize_frv_solib): Declare. * solib-irix.c (fetch_lm_info): Make static. (_initialize_irix_solib): Declare. * solib-som.c: Include solib-som.h. (som_solib_select): Line break. * sparc-tdep.c (sparc_regset_from_core_section): Make static. * sparcnbsd-tdep.c (_initialize_sparnbsd_tdep): Rename to ... (_initialize_sparcnbsd_tdep): ... this. * spu-tdep.c (spu_software_single_step): Make it static. (_initialize_spu_tdep): Declare. * vax-tdep.c (vax_frame_cache): Make it static. * xcoffread.c: Include xcoffread.h. (get_toc_offset): Rename to ... (xcoff_get_toc_offset): ... this. (_initialize_xcoffread): Declare. * xcoffread.h: New. * xtensa-linux-tdep.c (_initialize_xtensa_linux_tdep): Declare. * xtensa-tdep.c (xtensa_skip_prologue, xtensa_derive_tdep): Make static. (_initialize_xtensa_tdep): Declare.
429 lines
12 KiB
C
429 lines
12 KiB
C
/* Target-dependent code for NetBSD/mips.
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Copyright (C) 2002, 2003, 2004, 2006, 2007, 2008, 2009
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Free Software Foundation, Inc.
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Contributed by Wasabi Systems, 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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#include "defs.h"
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#include "gdbcore.h"
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#include "regcache.h"
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#include "regset.h"
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#include "target.h"
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#include "value.h"
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#include "osabi.h"
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#include "gdb_assert.h"
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#include "gdb_string.h"
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#include "nbsd-tdep.h"
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#include "mipsnbsd-tdep.h"
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#include "mips-tdep.h"
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#include "solib-svr4.h"
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/* Shorthand for some register numbers used below. */
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#define MIPS_PC_REGNUM MIPS_EMBED_PC_REGNUM
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#define MIPS_FP0_REGNUM MIPS_EMBED_FP0_REGNUM
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#define MIPS_FSR_REGNUM MIPS_EMBED_FP0_REGNUM + 32
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/* Core file support. */
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/* Number of registers in `struct reg' from <machine/reg.h>. */
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#define MIPSNBSD_NUM_GREGS 38
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/* Number of registers in `struct fpreg' from <machine/reg.h>. */
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#define MIPSNBSD_NUM_FPREGS 33
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/* Supply register REGNUM from the buffer specified by FPREGS and LEN
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in the floating-point register set REGSET to register cache
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REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
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static void
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mipsnbsd_supply_fpregset (const struct regset *regset,
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struct regcache *regcache,
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int regnum, const void *fpregs, size_t len)
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{
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size_t regsize = mips_isa_regsize (get_regcache_arch (regcache));
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const char *regs = fpregs;
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int i;
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gdb_assert (len >= MIPSNBSD_NUM_FPREGS * regsize);
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for (i = MIPS_FP0_REGNUM; i <= MIPS_FSR_REGNUM; i++)
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{
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if (regnum == i || regnum == -1)
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regcache_raw_supply (regcache, i,
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regs + (i - MIPS_FP0_REGNUM) * regsize);
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}
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}
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/* Supply register REGNUM from the buffer specified by GREGS and LEN
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in the general-purpose register set REGSET to register cache
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REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
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static void
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mipsnbsd_supply_gregset (const struct regset *regset,
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struct regcache *regcache, int regnum,
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const void *gregs, size_t len)
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{
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size_t regsize = mips_isa_regsize (get_regcache_arch (regcache));
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const char *regs = gregs;
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int i;
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gdb_assert (len >= MIPSNBSD_NUM_GREGS * regsize);
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for (i = 0; i <= MIPS_PC_REGNUM; i++)
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{
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if (regnum == i || regnum == -1)
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regcache_raw_supply (regcache, i, regs + i * regsize);
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}
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if (len >= (MIPSNBSD_NUM_GREGS + MIPSNBSD_NUM_FPREGS) * regsize)
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{
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regs += MIPSNBSD_NUM_GREGS * regsize;
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len -= MIPSNBSD_NUM_GREGS * regsize;
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mipsnbsd_supply_fpregset (regset, regcache, regnum, regs, len);
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}
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}
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/* NetBSD/mips register sets. */
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static struct regset mipsnbsd_gregset =
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{
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NULL,
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mipsnbsd_supply_gregset
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};
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static struct regset mipsnbsd_fpregset =
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{
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NULL,
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mipsnbsd_supply_fpregset
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};
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/* Return the appropriate register set for the core section identified
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by SECT_NAME and SECT_SIZE. */
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static const struct regset *
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mipsnbsd_regset_from_core_section (struct gdbarch *gdbarch,
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const char *sect_name, size_t sect_size)
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{
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size_t regsize = mips_isa_regsize (gdbarch);
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if (strcmp (sect_name, ".reg") == 0
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&& sect_size >= MIPSNBSD_NUM_GREGS * regsize)
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return &mipsnbsd_gregset;
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if (strcmp (sect_name, ".reg2") == 0
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&& sect_size >= MIPSNBSD_NUM_FPREGS * regsize)
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return &mipsnbsd_fpregset;
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return NULL;
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}
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/* Conveniently, GDB uses the same register numbering as the
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ptrace register structure used by NetBSD/mips. */
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void
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mipsnbsd_supply_reg (struct regcache *regcache, const char *regs, int regno)
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{
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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int i;
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for (i = 0; i <= gdbarch_pc_regnum (gdbarch); i++)
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{
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if (regno == i || regno == -1)
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{
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if (gdbarch_cannot_fetch_register (gdbarch, i))
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regcache_raw_supply (regcache, i, NULL);
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else
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regcache_raw_supply (regcache, i,
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regs + (i * mips_isa_regsize (gdbarch)));
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}
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}
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}
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void
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mipsnbsd_fill_reg (const struct regcache *regcache, char *regs, int regno)
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{
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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int i;
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for (i = 0; i <= gdbarch_pc_regnum (gdbarch); i++)
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if ((regno == i || regno == -1)
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&& ! gdbarch_cannot_store_register (gdbarch, i))
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regcache_raw_collect (regcache, i,
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regs + (i * mips_isa_regsize (gdbarch)));
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}
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void
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mipsnbsd_supply_fpreg (struct regcache *regcache, const char *fpregs, int regno)
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{
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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int i;
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for (i = gdbarch_fp0_regnum (gdbarch);
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i <= mips_regnum (gdbarch)->fp_implementation_revision;
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i++)
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{
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if (regno == i || regno == -1)
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{
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if (gdbarch_cannot_fetch_register (gdbarch, i))
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regcache_raw_supply (regcache, i, NULL);
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else
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regcache_raw_supply (regcache, i,
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fpregs
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+ ((i - gdbarch_fp0_regnum (gdbarch))
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* mips_isa_regsize (gdbarch)));
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}
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}
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}
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void
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mipsnbsd_fill_fpreg (const struct regcache *regcache, char *fpregs, int regno)
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{
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struct gdbarch *gdbarch = get_regcache_arch (regcache);
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int i;
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for (i = gdbarch_fp0_regnum (gdbarch);
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i <= mips_regnum (gdbarch)->fp_control_status;
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i++)
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if ((regno == i || regno == -1)
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&& ! gdbarch_cannot_store_register (gdbarch, i))
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regcache_raw_collect (regcache, i,
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fpregs + ((i - gdbarch_fp0_regnum (gdbarch))
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* mips_isa_regsize (gdbarch)));
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}
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/* Under NetBSD/mips, signal handler invocations can be identified by the
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designated code sequence that is used to return from a signal handler.
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In particular, the return address of a signal handler points to the
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following code sequence:
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addu a0, sp, 16
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li v0, 295 # __sigreturn14
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syscall
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Each instruction has a unique encoding, so we simply attempt to match
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the instruction the PC is pointing to with any of the above instructions.
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If there is a hit, we know the offset to the start of the designated
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sequence and can then check whether we really are executing in the
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signal trampoline. If not, -1 is returned, otherwise the offset from the
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start of the return sequence is returned. */
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#define RETCODE_NWORDS 3
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#define RETCODE_SIZE (RETCODE_NWORDS * 4)
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static const unsigned char sigtramp_retcode_mipsel[RETCODE_SIZE] =
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{
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0x10, 0x00, 0xa4, 0x27, /* addu a0, sp, 16 */
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0x27, 0x01, 0x02, 0x24, /* li v0, 295 */
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0x0c, 0x00, 0x00, 0x00, /* syscall */
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};
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static const unsigned char sigtramp_retcode_mipseb[RETCODE_SIZE] =
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{
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0x27, 0xa4, 0x00, 0x10, /* addu a0, sp, 16 */
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0x24, 0x02, 0x01, 0x27, /* li v0, 295 */
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0x00, 0x00, 0x00, 0x0c, /* syscall */
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};
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static LONGEST
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mipsnbsd_sigtramp_offset (struct frame_info *this_frame)
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{
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CORE_ADDR pc = get_frame_pc (this_frame);
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const char *retcode = gdbarch_byte_order (get_frame_arch (this_frame))
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== BFD_ENDIAN_BIG ? sigtramp_retcode_mipseb :
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sigtramp_retcode_mipsel;
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unsigned char ret[RETCODE_SIZE], w[4];
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LONGEST off;
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int i;
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if (!safe_frame_unwind_memory (this_frame, pc, w, sizeof (w)))
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return -1;
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for (i = 0; i < RETCODE_NWORDS; i++)
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{
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if (memcmp (w, retcode + (i * 4), 4) == 0)
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break;
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}
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if (i == RETCODE_NWORDS)
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return -1;
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off = i * 4;
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pc -= off;
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if (!safe_frame_unwind_memory (this_frame, pc, ret, sizeof (ret)))
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return -1;
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if (memcmp (ret, retcode, RETCODE_SIZE) == 0)
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return off;
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return -1;
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}
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/* Figure out where the longjmp will land. We expect that we have
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just entered longjmp and haven't yet setup the stack frame, so the
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args are still in the argument regs. MIPS_A0_REGNUM points at the
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jmp_buf structure from which we extract the PC that we will land
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at. The PC is copied into *pc. This routine returns true on
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success. */
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#define NBSD_MIPS_JB_PC (2 * 4)
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#define NBSD_MIPS_JB_ELEMENT_SIZE(gdbarch) mips_isa_regsize (gdbarch)
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#define NBSD_MIPS_JB_OFFSET(gdbarch) (NBSD_MIPS_JB_PC * \
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NBSD_MIPS_JB_ELEMENT_SIZE (gdbarch))
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static int
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mipsnbsd_get_longjmp_target (struct frame_info *frame, CORE_ADDR *pc)
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{
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struct gdbarch *gdbarch = get_frame_arch (frame);
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CORE_ADDR jb_addr;
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char *buf;
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buf = alloca (NBSD_MIPS_JB_ELEMENT_SIZE (gdbarch));
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jb_addr = get_frame_register_unsigned (frame, MIPS_A0_REGNUM);
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if (target_read_memory (jb_addr + NBSD_MIPS_JB_OFFSET (gdbarch), buf,
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NBSD_MIPS_JB_ELEMENT_SIZE (gdbarch)))
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return 0;
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*pc = extract_unsigned_integer (buf, NBSD_MIPS_JB_ELEMENT_SIZE (gdbarch));
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return 1;
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}
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static int
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mipsnbsd_cannot_fetch_register (struct gdbarch *gdbarch, int regno)
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{
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return (regno == MIPS_ZERO_REGNUM
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|| regno == mips_regnum (gdbarch)->fp_implementation_revision);
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}
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static int
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mipsnbsd_cannot_store_register (struct gdbarch *gdbarch, int regno)
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{
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return (regno == MIPS_ZERO_REGNUM
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|| regno == mips_regnum (gdbarch)->fp_implementation_revision);
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}
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/* Shared library support. */
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/* NetBSD/mips uses a slightly different `struct link_map' than the
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other NetBSD platforms. */
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static struct link_map_offsets *
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mipsnbsd_ilp32_fetch_link_map_offsets (void)
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{
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static struct link_map_offsets lmo;
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static struct link_map_offsets *lmp = NULL;
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if (lmp == NULL)
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{
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lmp = &lmo;
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lmo.r_version_offset = 0;
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lmo.r_version_size = 4;
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lmo.r_map_offset = 4;
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lmo.r_brk_offset = 8;
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lmo.r_ldsomap_offset = -1;
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/* Everything we need is in the first 24 bytes. */
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lmo.link_map_size = 24;
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lmo.l_addr_offset = 4;
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lmo.l_name_offset = 8;
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lmo.l_ld_offset = 12;
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lmo.l_next_offset = 16;
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lmo.l_prev_offset = 20;
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}
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return lmp;
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}
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static struct link_map_offsets *
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mipsnbsd_lp64_fetch_link_map_offsets (void)
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{
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static struct link_map_offsets lmo;
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static struct link_map_offsets *lmp = NULL;
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if (lmp == NULL)
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{
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lmp = &lmo;
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lmo.r_version_offset = 0;
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lmo.r_version_size = 4;
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lmo.r_map_offset = 8;
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lmo.r_brk_offset = 16;
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lmo.r_ldsomap_offset = -1;
|
||
|
||
/* Everything we need is in the first 40 bytes. */
|
||
lmo.link_map_size = 48;
|
||
lmo.l_addr_offset = 0;
|
||
lmo.l_name_offset = 16;
|
||
lmo.l_ld_offset = 24;
|
||
lmo.l_next_offset = 32;
|
||
lmo.l_prev_offset = 40;
|
||
}
|
||
|
||
return lmp;
|
||
}
|
||
|
||
|
||
static void
|
||
mipsnbsd_init_abi (struct gdbarch_info info,
|
||
struct gdbarch *gdbarch)
|
||
{
|
||
set_gdbarch_regset_from_core_section
|
||
(gdbarch, mipsnbsd_regset_from_core_section);
|
||
|
||
set_gdbarch_get_longjmp_target (gdbarch, mipsnbsd_get_longjmp_target);
|
||
|
||
set_gdbarch_cannot_fetch_register (gdbarch, mipsnbsd_cannot_fetch_register);
|
||
set_gdbarch_cannot_store_register (gdbarch, mipsnbsd_cannot_store_register);
|
||
|
||
set_gdbarch_software_single_step (gdbarch, mips_software_single_step);
|
||
|
||
/* NetBSD/mips has SVR4-style shared libraries. */
|
||
set_solib_svr4_fetch_link_map_offsets
|
||
(gdbarch, (gdbarch_ptr_bit (gdbarch) == 32 ?
|
||
mipsnbsd_ilp32_fetch_link_map_offsets :
|
||
mipsnbsd_lp64_fetch_link_map_offsets));
|
||
}
|
||
|
||
|
||
static enum gdb_osabi
|
||
mipsnbsd_core_osabi_sniffer (bfd *abfd)
|
||
{
|
||
if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
|
||
return GDB_OSABI_NETBSD_ELF;
|
||
|
||
return GDB_OSABI_UNKNOWN;
|
||
}
|
||
|
||
/* Provide a prototype to silence -Wmissing-prototypes. */
|
||
extern initialize_file_ftype _initialize_mipsnbsd_tdep;
|
||
|
||
void
|
||
_initialize_mipsnbsd_tdep (void)
|
||
{
|
||
gdbarch_register_osabi (bfd_arch_mips, 0, GDB_OSABI_NETBSD_ELF,
|
||
mipsnbsd_init_abi);
|
||
}
|