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gdb: Move DJGPP/go32 bits to their own tdep file
I posit that this makes them easier to find. The other day while working on the wchar_t patch, I had a bit of trouble finding the DJGPP/go32 tdep bits. My initial reaction was looking for a go32-specific tdep file, but there's none. Confirmed that a --host=i586-pc-msdosdjgpp GDB still builds successfully and includes the i386-go32-tdep.o object. Confirmed that an --enable-targets=all build of GDB on x86-64 GNU/Linux includes the DJGPP/go32 bits too. gdb/ChangeLog: 2017-04-12 Pedro Alves <palves@redhat.com> * Makefile.in (ALL_TARGET_OBS): Add i386-go32-tdep.o. * configure.tgt: Handle i[34567]86-*-go32* and i[34567]86-*-msdosdjgpp*. * i386-tdep.c (i386_svr4_reg_to_regnum): Make extern. (i386_go32_init_abi, i386_coff_osabi_sniffer): Moved to i386-go32-tdep.c. (_initialize_i386_tdep): DJGPP bits moved to i386-go32-tdep.c. * i386-go32-tdep.c: New file. * i386-tdep.h (tdesc_i386_mmx, i386_svr4_reg_to_regnum): New declarations.
This commit is contained in:
Pedro Alves
parent
0a31ccfbd8
commit
8f10c93233
@ -1,3 +1,17 @@
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2017-04-12 Pedro Alves <palves@redhat.com>
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* Makefile.in (ALL_TARGET_OBS): Add i386-go32-tdep.o.
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* configure.tgt: Handle i[34567]86-*-go32* and
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i[34567]86-*-msdosdjgpp*.
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* i386-tdep.c (i386_svr4_reg_to_regnum):
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Make extern.
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(i386_go32_init_abi, i386_coff_osabi_sniffer): Moved to
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i386-go32-tdep.c.
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(_initialize_i386_tdep): DJGPP bits moved to i386-go32-tdep.c.
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* i386-go32-tdep.c: New file.
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* i386-tdep.h (tdesc_i386_mmx, i386_svr4_reg_to_regnum): New
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declarations.
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2017-04-12 Simon Marchi <simon.marchi@ericsson.com>
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* aix-thread.c (pd_status2str): Change return type to const char *.
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@ -810,6 +810,7 @@ ALL_TARGET_OBS = \
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i386-dicos-tdep.o \
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i386-fbsd-tdep.o \
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i386-gnu-tdep.o \
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i386-go32-tdep.o \
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i386-linux-tdep.o \
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i386-nbsd-tdep.o \
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i386-nto-tdep.o \
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@ -253,6 +253,10 @@ i[34567]86-*-mingw32*)
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windows-tdep.o"
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build_gdbserver=yes
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;;
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i[34567]86-*-go32* | i[34567]86-*-msdosdjgpp*)
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# Target: i386 running DJGPP/go32.
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gdb_target_obs="i386-tdep.o i387-tdep.o i386-go32-tdep.o"
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;;
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i[34567]86-*-*)
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# Target: i386
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gdb_target_obs="i386-tdep.o i387-tdep.o"
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72
gdb/i386-go32-tdep.c
Normal file
72
gdb/i386-go32-tdep.c
Normal file
@ -0,0 +1,72 @@
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/* Target-dependent code for DJGPP/i386.
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Copyright (C) 1988-2017 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "i386-tdep.h"
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#include "target-descriptions.h"
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#include "osabi.h"
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static void
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i386_go32_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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{
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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/* DJGPP doesn't have any special frames for signal handlers. */
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tdep->sigtramp_p = NULL;
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tdep->jb_pc_offset = 36;
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/* DJGPP does not support the SSE registers. */
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if (!tdesc_has_registers (info.target_desc))
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tdep->tdesc = tdesc_i386_mmx;
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/* Native compiler is GCC, which uses the SVR4 register numbering
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even in COFF and STABS. See the comment in i386_gdbarch_init,
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before the calls to set_gdbarch_stab_reg_to_regnum and
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set_gdbarch_sdb_reg_to_regnum. */
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set_gdbarch_stab_reg_to_regnum (gdbarch, i386_svr4_reg_to_regnum);
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set_gdbarch_sdb_reg_to_regnum (gdbarch, i386_svr4_reg_to_regnum);
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set_gdbarch_has_dos_based_file_system (gdbarch, 1);
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set_gdbarch_wchar_bit (gdbarch, 16);
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set_gdbarch_wchar_signed (gdbarch, 0);
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}
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static enum gdb_osabi
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i386_coff_osabi_sniffer (bfd *abfd)
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{
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if (strcmp (bfd_get_target (abfd), "coff-go32-exe") == 0
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|| strcmp (bfd_get_target (abfd), "coff-go32") == 0)
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return GDB_OSABI_GO32;
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return GDB_OSABI_UNKNOWN;
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}
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void
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_initialize_i386_go32_tdep ()
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{
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gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_coff_flavour,
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i386_coff_osabi_sniffer);
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gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_GO32,
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i386_go32_init_abi);
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}
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@ -573,7 +573,7 @@ i386_svr4_dwarf_reg_to_regnum (struct gdbarch *gdbarch, int reg)
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/* Wrapper on i386_svr4_dwarf_reg_to_regnum to return
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num_regs + num_pseudo_regs for other debug formats. */
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static int
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int
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i386_svr4_reg_to_regnum (struct gdbarch *gdbarch, int reg)
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{
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int regnum = i386_svr4_dwarf_reg_to_regnum (gdbarch, reg);
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@ -4487,34 +4487,6 @@ i386_svr4_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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tdep->jb_pc_offset = 20;
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}
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/* DJGPP. */
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static void
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i386_go32_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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{
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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/* DJGPP doesn't have any special frames for signal handlers. */
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tdep->sigtramp_p = NULL;
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tdep->jb_pc_offset = 36;
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/* DJGPP does not support the SSE registers. */
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if (! tdesc_has_registers (info.target_desc))
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tdep->tdesc = tdesc_i386_mmx;
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/* Native compiler is GCC, which uses the SVR4 register numbering
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even in COFF and STABS. See the comment in i386_gdbarch_init,
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before the calls to set_gdbarch_stab_reg_to_regnum and
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set_gdbarch_sdb_reg_to_regnum. */
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set_gdbarch_stab_reg_to_regnum (gdbarch, i386_svr4_reg_to_regnum);
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set_gdbarch_sdb_reg_to_regnum (gdbarch, i386_svr4_reg_to_regnum);
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set_gdbarch_has_dos_based_file_system (gdbarch, 1);
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set_gdbarch_wchar_bit (gdbarch, 16);
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set_gdbarch_wchar_signed (gdbarch, 0);
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}
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/* i386 register groups. In addition to the normal groups, add "mmx"
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@ -8739,15 +8711,6 @@ i386_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
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return gdbarch;
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}
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static enum gdb_osabi
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i386_coff_osabi_sniffer (bfd *abfd)
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{
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if (strcmp (bfd_get_target (abfd), "coff-go32-exe") == 0
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|| strcmp (bfd_get_target (abfd), "coff-go32") == 0)
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return GDB_OSABI_GO32;
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return GDB_OSABI_UNKNOWN;
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}
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/* Return the target description for a specified XSAVE feature mask. */
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@ -9085,13 +9048,8 @@ Show Intel Memory Protection Extensions specific variables."),
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in the bound table.",
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&mpx_set_cmdlist);
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gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_coff_flavour,
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i386_coff_osabi_sniffer);
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gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_SVR4,
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i386_svr4_init_abi);
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gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_GO32,
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i386_go32_init_abi);
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/* Initialize the i386-specific register groups. */
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i386_init_reggroups ();
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@ -340,6 +340,7 @@ enum record_i386_regnum
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#define I386_MAX_REGISTER_SIZE 64
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extern struct target_desc *tdesc_i386;
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extern struct target_desc *tdesc_i386_mmx;
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/* Types for i386-specific registers. */
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extern struct type *i387_ext_type (struct gdbarch *gdbarch);
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@ -432,6 +433,10 @@ extern void i386_elf_init_abi (struct gdbarch_info, struct gdbarch *);
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/* Initialize a SVR4 architecture variant. */
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extern void i386_svr4_init_abi (struct gdbarch_info, struct gdbarch *);
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/* Convert SVR4 register number REG to the appropriate register number
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used by GDB. */
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extern int i386_svr4_reg_to_regnum (struct gdbarch *gdbarch, int reg);
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extern int i386_process_record (struct gdbarch *gdbarch,
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struct regcache *regcache, CORE_ADDR addr);
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extern const struct target_desc *i386_target_description (uint64_t xcr0);
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