programs/winedbg/be_arm.c

   1 /*
   2  * Debugger ARM specific functions
   3  *
   4  * Copyright 2000-2003 Marcus Meissner
   5  *                2004 Eric Pouech
   6  *                2010 André Hentschel
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include "debugger.h"
  24
  25 #if defined(__arm__)
  26
  27 static unsigned be_arm_get_addr(HANDLE hThread, const CONTEXT* ctx,
  28                                 enum be_cpu_addr bca, ADDRESS64* addr)
  29 {
  30     switch (bca)
  31     {
  32     case be_cpu_addr_pc:
  33         return be_cpu_build_addr(hThread, ctx, addr, 0, ctx->Pc);
  34     case be_cpu_addr_stack:
  35         return be_cpu_build_addr(hThread, ctx, addr, 0, ctx->Sp);
  36     default:
  37     case be_cpu_addr_frame:
  38         dbg_printf("not done\n");
  39     }
  40     return FALSE;
  41 }
  42
  43 static unsigned be_arm_get_register_info(int regno, enum be_cpu_addr* kind)
  44 {
  45     dbg_printf("not done\n");
  46     return FALSE;
  47 }
  48
  49 static void be_arm_single_step(CONTEXT* ctx, unsigned enable)
  50 {
  51     dbg_printf("not done\n");
  52 }
  53
  54 static void be_arm_print_context(HANDLE hThread, const CONTEXT* ctx, int all_regs)
  55 {
  56     dbg_printf("Context printing for arm not done yet\n");
  57 }
  58
  59 static void be_arm_print_segment_info(HANDLE hThread, const CONTEXT* ctx)
  60 {
  61 }
  62
  63 static struct dbg_internal_var be_arm_ctx[] =
  64 {
  65     {0,                 NULL,           0,                                      dbg_itype_none}
  66 };
  67
  68 static unsigned be_arm_is_step_over_insn(const void* insn)
  69 {
  70     dbg_printf("not done\n");
  71     return FALSE;
  72 }
  73
  74 static unsigned be_arm_is_function_return(const void* insn)
  75 {
  76     dbg_printf("not done\n");
  77     return FALSE;
  78 }
  79
  80 static unsigned be_arm_is_break_insn(const void* insn)
  81 {
  82     dbg_printf("not done\n");
  83     return FALSE;
  84 }
  85
  86 static unsigned be_arm_is_func_call(const void* insn, ADDRESS64* callee)
  87 {
  88     return FALSE;
  89 }
  90
  91 static void be_arm_disasm_one_insn(ADDRESS64* addr, int display)
  92 {
  93     dbg_printf("Disasm NIY\n");
  94 }
  95
  96 static unsigned be_arm_insert_Xpoint(HANDLE hProcess, const struct be_process_io* pio,
  97                                      CONTEXT* ctx, enum be_xpoint_type type,
  98                                      void* addr, unsigned long* val, unsigned size)
  99 {
 100     SIZE_T              sz;
 101
 102     switch (type)
 103     {
 104     case be_xpoint_break:
 105         if (!size) return 0;
 106         if (!pio->read(hProcess, addr, val, 4, &sz) || sz != 4) return 0;
 107     default:
 108         dbg_printf("Unknown/unsupported bp type %c\n", type);
 109         return 0;
 110     }
 111     return 1;
 112 }
 113
 114 static unsigned be_arm_remove_Xpoint(HANDLE hProcess, const struct be_process_io* pio,
 115                                      CONTEXT* ctx, enum be_xpoint_type type,
 116                                      void* addr, unsigned long val, unsigned size)
 117 {
 118     SIZE_T              sz;
 119
 120     switch (type)
 121     {
 122     case be_xpoint_break:
 123         if (!size) return 0;
 124         if (!pio->write(hProcess, addr, &val, 4, &sz) || sz == 4) return 0;
 125         break;
 126     default:
 127         dbg_printf("Unknown/unsupported bp type %c\n", type);
 128         return 0;
 129     }
 130     return 1;
 131 }
 132
 133 static unsigned be_arm_is_watchpoint_set(const CONTEXT* ctx, unsigned idx)
 134 {
 135     dbg_printf("not done\n");
 136     return FALSE;
 137 }
 138
 139 static void be_arm_clear_watchpoint(CONTEXT* ctx, unsigned idx)
 140 {
 141     dbg_printf("not done\n");
 142 }
 143
 144 static int be_arm_adjust_pc_for_break(CONTEXT* ctx, BOOL way)
 145 {
 146     dbg_printf("not done\n");
 147     return 0;
 148 }
 149
 150 static int be_arm_fetch_integer(const struct dbg_lvalue* lvalue, unsigned size,
 151                                 unsigned ext_sign, LONGLONG* ret)
 152 {
 153     dbg_printf("not done\n");
 154     return FALSE;
 155 }
 156
 157 static int be_arm_fetch_float(const struct dbg_lvalue* lvalue, unsigned size,
 158                               long double* ret)
 159 {
 160     dbg_printf("not done\n");
 161     return FALSE;
 162 }
 163
 164 struct backend_cpu be_arm =
 165 {
 166     IMAGE_FILE_MACHINE_ARM,
 167     4,
 168     be_cpu_linearize,
 169     be_cpu_build_addr,
 170     be_arm_get_addr,
 171     be_arm_get_register_info,
 172     be_arm_single_step,
 173     be_arm_print_context,
 174     be_arm_print_segment_info,
 175     be_arm_ctx,
 176     be_arm_is_step_over_insn,
 177     be_arm_is_function_return,
 178     be_arm_is_break_insn,
 179     be_arm_is_func_call,
 180     be_arm_disasm_one_insn,
 181     be_arm_insert_Xpoint,
 182     be_arm_remove_Xpoint,
 183     be_arm_is_watchpoint_set,
 184     be_arm_clear_watchpoint,
 185     be_arm_adjust_pc_for_break,
 186     be_arm_fetch_integer,
 187     be_arm_fetch_float,
 188 };
 189 #endif