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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [arm-wince-tdep.c] - Rev 280
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/* Target-dependent code for Windows CE running on ARM processors, for GDB. Copyright (C) 2007, 2008 Free Software Foundation, Inc. This file is part of GDB. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include "defs.h" #include "osabi.h" #include "gdbcore.h" #include "target.h" #include "solib.h" #include "solib-target.h" #include "gdb_string.h" #include "arm-tdep.h" static const char arm_wince_le_breakpoint[] = { 0x10, 0x00, 0x00, 0xe6 }; static const char arm_wince_thumb_le_breakpoint[] = { 0xfe, 0xdf }; /* Description of the longjmp buffer. */ #define ARM_WINCE_JB_ELEMENT_SIZE INT_REGISTER_SIZE #define ARM_WINCE_JB_PC 10 static CORE_ADDR arm_pe_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc) { ULONGEST indirect; struct minimal_symbol *indsym; char *symname; CORE_ADDR next_pc; /* The format of an ARM DLL trampoline is: ldr ip, [pc] ldr pc, [ip] .dw __imp_<func> */ if (pc == 0 || read_memory_unsigned_integer (pc + 0, 4) != 0xe59fc000 || read_memory_unsigned_integer (pc + 4, 4) != 0xe59cf000) return 0; indirect = read_memory_unsigned_integer (pc + 8, 4); if (indirect == 0) return 0; indsym = lookup_minimal_symbol_by_pc (indirect); if (indsym == NULL) return 0; symname = SYMBOL_LINKAGE_NAME (indsym); if (symname == NULL || strncmp (symname, "__imp_", 6) != 0) return 0; next_pc = read_memory_unsigned_integer (indirect, 4); if (next_pc != 0) return next_pc; /* Check with the default arm gdbarch_skip_trampoline. */ return arm_skip_stub (frame, pc); } static void arm_wince_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); tdep->arm_breakpoint = arm_wince_le_breakpoint; tdep->arm_breakpoint_size = sizeof (arm_wince_le_breakpoint); tdep->thumb_breakpoint = arm_wince_thumb_le_breakpoint; tdep->thumb_breakpoint_size = sizeof (arm_wince_thumb_le_breakpoint); tdep->struct_return = pcc_struct_return; tdep->fp_model = ARM_FLOAT_SOFT_VFP; tdep->jb_pc = ARM_WINCE_JB_PC; tdep->jb_elt_size = ARM_WINCE_JB_ELEMENT_SIZE; /* On ARM WinCE char defaults to signed. */ set_gdbarch_char_signed (gdbarch, 1); /* Shared library handling. */ set_solib_ops (gdbarch, &solib_target_so_ops); set_gdbarch_skip_trampoline_code (gdbarch, arm_pe_skip_trampoline_code); /* Single stepping. */ set_gdbarch_software_single_step (gdbarch, arm_software_single_step); } static enum gdb_osabi arm_wince_osabi_sniffer (bfd *abfd) { const char *target_name = bfd_get_target (abfd); if (strcmp (target_name, "pei-arm-wince-little") == 0) return GDB_OSABI_WINCE; return GDB_OSABI_UNKNOWN; } /* Provide a prototype to silence -Wmissing-prototypes. */ void _initialize_arm_wince_tdep (void); void _initialize_arm_wince_tdep (void) { gdbarch_register_osabi_sniffer (bfd_arch_arm, bfd_target_coff_flavour, arm_wince_osabi_sniffer); gdbarch_register_osabi (bfd_arch_arm, 0, GDB_OSABI_WINCE, arm_wince_init_abi); }
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