projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 8f10c932 PA |
1 | /* Target-dependent code for DJGPP/i386. |
| 2 | ||
| e2882c85 | 3 | Copyright (C) 1988-2018 Free Software Foundation, Inc. |
| 8f10c932 PA |
4 | |
| 5 | This file is part of GDB. | |
| 6 | ||
| 7 | This program is free software; you can redistribute it and/or modify | |
| 8 | it under the terms of the GNU General Public License as published by | |
| 9 | the Free Software Foundation; either version 3 of the License, or | |
| 10 | (at your option) any later version. | |
| 11 | ||
| 12 | This program is distributed in the hope that it will be useful, | |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | GNU General Public License for more details. | |
| 16 | ||
| 17 | You should have received a copy of the GNU General Public License | |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
| 19 | ||
| 20 | #include "defs.h" | |
| 21 | #include "i386-tdep.h" | |
| badc0020 | 22 | #include "x86-xstate.h" |
| 8f10c932 PA |
23 | #include "target-descriptions.h" |
| 24 | #include "osabi.h" | |
| 25 | ||
| 26 | static void | |
| 27 | i386_go32_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) | |
| 28 | { | |
| 29 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
| 30 | ||
| 31 | /* DJGPP doesn't have any special frames for signal handlers. */ | |
| 32 | tdep->sigtramp_p = NULL; | |
| 33 | ||
| 34 | tdep->jb_pc_offset = 36; | |
| 35 | ||
| 36 | /* DJGPP does not support the SSE registers. */ | |
| 37 | if (!tdesc_has_registers (info.target_desc)) | |
| badc0020 | 38 | tdep->tdesc = i386_target_description (X86_XSTATE_X87_MASK); |
| 8f10c932 PA |
39 | |
| 40 | /* Native compiler is GCC, which uses the SVR4 register numbering | |
| 41 | even in COFF and STABS. See the comment in i386_gdbarch_init, | |
| 42 | before the calls to set_gdbarch_stab_reg_to_regnum and | |
| 43 | set_gdbarch_sdb_reg_to_regnum. */ | |
| 44 | set_gdbarch_stab_reg_to_regnum (gdbarch, i386_svr4_reg_to_regnum); | |
| 45 | set_gdbarch_sdb_reg_to_regnum (gdbarch, i386_svr4_reg_to_regnum); | |
| 46 | ||
| 47 | set_gdbarch_has_dos_based_file_system (gdbarch, 1); | |
| 48 | ||
| 49 | set_gdbarch_wchar_bit (gdbarch, 16); | |
| 50 | set_gdbarch_wchar_signed (gdbarch, 0); | |
| 51 | } | |
| 52 | \f | |
| 53 | ||
| 54 | static enum gdb_osabi | |
| 55 | i386_coff_osabi_sniffer (bfd *abfd) | |
| 56 | { | |
| 57 | if (strcmp (bfd_get_target (abfd), "coff-go32-exe") == 0 | |
| 58 | || strcmp (bfd_get_target (abfd), "coff-go32") == 0) | |
| 59 | return GDB_OSABI_GO32; | |
| 60 | ||
| 61 | return GDB_OSABI_UNKNOWN; | |
| 62 | } | |
| 63 | \f | |
| 64 | ||
| 65 | void | |
| 66 | _initialize_i386_go32_tdep () | |
| 67 | { | |
| 68 | gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_coff_flavour, | |
| 69 | i386_coff_osabi_sniffer); | |
| 70 | ||
| 71 | gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_GO32, | |
| 72 | i386_go32_init_abi); | |
| 73 | } |