programs/winedbg/be_x86_64.c

   1 /*
   2  * Debugger x86_64 specific functions
   3  *
   4  * Copyright 2004 Vincent Béron
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "debugger.h"
  22
  23 #if defined(__x86_64__)
  24
  25 static unsigned be_x86_64_get_addr(HANDLE hThread, const CONTEXT* ctx,
  26                                  enum be_cpu_addr bca, ADDRESS64* addr)
  27 {
  28     addr->Mode = AddrModeFlat;
  29     switch (bca)
  30     {
  31     case be_cpu_addr_pc:
  32         addr->Segment = ctx->SegCs;
  33         addr->Offset = ctx->Rip;
  34         return TRUE;
  35     case be_cpu_addr_stack:
  36         addr->Segment = ctx->SegSs;
  37         addr->Offset = ctx->Rsp;
  38         return TRUE;
  39     case be_cpu_addr_frame:
  40         addr->Segment = ctx->SegSs;
  41         addr->Offset = ctx->Rbp;
  42         return TRUE;
  43     default:
  44         addr->Mode = -1;
  45         return FALSE;
  46     }
  47 }
  48
  49 static unsigned be_x86_64_get_register_info(int regno, enum be_cpu_addr* kind)
  50 {
  51     /* this is true when running in 32bit mode... and wrong in 64 :-/ */
  52     switch (regno)
  53     {
  54     case CV_AMD64_RIP: *kind = be_cpu_addr_pc; return TRUE;
  55     case CV_AMD64_EBP: *kind = be_cpu_addr_frame; return TRUE;
  56     case CV_AMD64_ESP: *kind = be_cpu_addr_stack; return TRUE;
  57     }
  58     return FALSE;
  59 }
  60
  61 static void be_x86_64_single_step(CONTEXT* ctx, unsigned enable)
  62 {
  63     dbg_printf("not done single_step\n");
  64 }
  65
  66 static void be_x86_64_print_context(HANDLE hThread, const CONTEXT* ctx,
  67                                     int all_regs)
  68 {
  69     dbg_printf("Context printing for x86_64 not done yet\n");
  70 }
  71
  72 static void be_x86_64_print_segment_info(HANDLE hThread, const CONTEXT* ctx)
  73 {
  74 }
  75
  76 static struct dbg_internal_var be_x86_64_ctx[] =
  77 {
  78     {CV_AMD64_AL,       "AL",           (DWORD*)FIELD_OFFSET(CONTEXT, Rax),     dbg_itype_unsigned_char_int},
  79     {CV_AMD64_BL,       "BL",           (DWORD*)FIELD_OFFSET(CONTEXT, Rbx),     dbg_itype_unsigned_char_int},
  80     {CV_AMD64_CL,       "CL",           (DWORD*)FIELD_OFFSET(CONTEXT, Rcx),     dbg_itype_unsigned_char_int},
  81     {CV_AMD64_DL,       "DL",           (DWORD*)FIELD_OFFSET(CONTEXT, Rdx),     dbg_itype_unsigned_char_int},
  82     {CV_AMD64_AH,       "AH",           (DWORD*)(FIELD_OFFSET(CONTEXT, Rax)+1), dbg_itype_unsigned_char_int},
  83     {CV_AMD64_BH,       "BH",           (DWORD*)(FIELD_OFFSET(CONTEXT, Rbx)+1), dbg_itype_unsigned_char_int},
  84     {CV_AMD64_CH,       "CH",           (DWORD*)(FIELD_OFFSET(CONTEXT, Rcx)+1), dbg_itype_unsigned_char_int},
  85     {CV_AMD64_DH,       "DH",           (DWORD*)(FIELD_OFFSET(CONTEXT, Rdx)+1), dbg_itype_unsigned_char_int},
  86     {CV_AMD64_AX,       "AX",           (DWORD*)FIELD_OFFSET(CONTEXT, Rax),     dbg_itype_unsigned_short_int},
  87     {CV_AMD64_BX,       "BX",           (DWORD*)FIELD_OFFSET(CONTEXT, Rbx),     dbg_itype_unsigned_short_int},
  88     {CV_AMD64_CX,       "CX",           (DWORD*)FIELD_OFFSET(CONTEXT, Rcx),     dbg_itype_unsigned_short_int},
  89     {CV_AMD64_DX,       "DX",           (DWORD*)FIELD_OFFSET(CONTEXT, Rdx),     dbg_itype_unsigned_short_int},
  90     {CV_AMD64_SP,       "SP",           (DWORD*)FIELD_OFFSET(CONTEXT, Rsp),     dbg_itype_unsigned_short_int},
  91     {CV_AMD64_BP,       "BP",           (DWORD*)FIELD_OFFSET(CONTEXT, Rbp),     dbg_itype_unsigned_short_int},
  92     {CV_AMD64_SI,       "SI",           (DWORD*)FIELD_OFFSET(CONTEXT, Rsi),     dbg_itype_unsigned_short_int},
  93     {CV_AMD64_DI,       "DI",           (DWORD*)FIELD_OFFSET(CONTEXT, Rdi),     dbg_itype_unsigned_short_int},
  94     {CV_AMD64_EAX,      "EAX",          (DWORD*)FIELD_OFFSET(CONTEXT, Rax),     dbg_itype_unsigned_int},
  95     {CV_AMD64_EBX,      "EBX",          (DWORD*)FIELD_OFFSET(CONTEXT, Rbx),     dbg_itype_unsigned_int},
  96     {CV_AMD64_ECX,      "ECX",          (DWORD*)FIELD_OFFSET(CONTEXT, Rcx),     dbg_itype_unsigned_int},
  97     {CV_AMD64_EDX,      "EDX",          (DWORD*)FIELD_OFFSET(CONTEXT, Rdx),     dbg_itype_unsigned_int},
  98     {CV_AMD64_ESP,      "ESP",          (DWORD*)FIELD_OFFSET(CONTEXT, Rsp),     dbg_itype_unsigned_int},
  99     {CV_AMD64_EBP,      "EBP",          (DWORD*)FIELD_OFFSET(CONTEXT, Rbp),     dbg_itype_unsigned_int},
 100     {CV_AMD64_ESI,      "ESI",          (DWORD*)FIELD_OFFSET(CONTEXT, Rsi),     dbg_itype_unsigned_int},
 101     {CV_AMD64_EDI,      "EDI",          (DWORD*)FIELD_OFFSET(CONTEXT, Rdi),     dbg_itype_unsigned_int},
 102     {CV_AMD64_ES,       "ES",           (DWORD*)FIELD_OFFSET(CONTEXT, SegEs),   dbg_itype_unsigned_short_int},
 103     {CV_AMD64_CS,       "CS",           (DWORD*)FIELD_OFFSET(CONTEXT, SegCs),   dbg_itype_unsigned_short_int},
 104     {CV_AMD64_SS,       "SS",           (DWORD*)FIELD_OFFSET(CONTEXT, SegSs),   dbg_itype_unsigned_short_int},
 105     {CV_AMD64_DS,       "DS",           (DWORD*)FIELD_OFFSET(CONTEXT, SegDs),   dbg_itype_unsigned_short_int},
 106     {CV_AMD64_FS,       "FS",           (DWORD*)FIELD_OFFSET(CONTEXT, SegFs),   dbg_itype_unsigned_short_int},
 107     {CV_AMD64_GS,       "GS",           (DWORD*)FIELD_OFFSET(CONTEXT, SegGs),   dbg_itype_unsigned_short_int},
 108     {CV_AMD64_FLAGS,    "FLAGS",        (DWORD*)FIELD_OFFSET(CONTEXT, EFlags),  dbg_itype_unsigned_short_int},
 109     {CV_AMD64_EFLAGS,   "EFLAGS",       (DWORD*)FIELD_OFFSET(CONTEXT, EFlags),  dbg_itype_unsigned_int},
 110     {CV_AMD64_RIP,      "RIP",          (DWORD*)FIELD_OFFSET(CONTEXT, Rip),     dbg_itype_unsigned_int},
 111     {CV_AMD64_RAX,      "RAX",          (DWORD*)FIELD_OFFSET(CONTEXT, Rax),     dbg_itype_unsigned_long_int},
 112     {CV_AMD64_RBX,      "RBX",          (DWORD*)FIELD_OFFSET(CONTEXT, Rbx),     dbg_itype_unsigned_long_int},
 113     {CV_AMD64_RCX,      "RCX",          (DWORD*)FIELD_OFFSET(CONTEXT, Rcx),     dbg_itype_unsigned_long_int},
 114     {CV_AMD64_RDX,      "RDX",          (DWORD*)FIELD_OFFSET(CONTEXT, Rdx),     dbg_itype_unsigned_long_int},
 115     {CV_AMD64_RSP,      "RSP",          (DWORD*)FIELD_OFFSET(CONTEXT, Rsp),     dbg_itype_unsigned_long_int},
 116     {CV_AMD64_RBP,      "RBP",          (DWORD*)FIELD_OFFSET(CONTEXT, Rbp),     dbg_itype_unsigned_long_int},
 117     {CV_AMD64_RSI,      "RSI",          (DWORD*)FIELD_OFFSET(CONTEXT, Rsi),     dbg_itype_unsigned_long_int},
 118     {CV_AMD64_RDI,      "RDI",          (DWORD*)FIELD_OFFSET(CONTEXT, Rdi),     dbg_itype_unsigned_long_int},
 119     {CV_AMD64_R8,       "R8",           (DWORD*)FIELD_OFFSET(CONTEXT, R8),      dbg_itype_unsigned_long_int},
 120     {CV_AMD64_R9,       "R9",           (DWORD*)FIELD_OFFSET(CONTEXT, R9),      dbg_itype_unsigned_long_int},
 121     {CV_AMD64_R10,      "R10",          (DWORD*)FIELD_OFFSET(CONTEXT, R10),     dbg_itype_unsigned_long_int},
 122     {CV_AMD64_R11,      "R11",          (DWORD*)FIELD_OFFSET(CONTEXT, R11),     dbg_itype_unsigned_long_int},
 123     {CV_AMD64_R12,      "R12",          (DWORD*)FIELD_OFFSET(CONTEXT, R12),     dbg_itype_unsigned_long_int},
 124     {CV_AMD64_R13,      "R13",          (DWORD*)FIELD_OFFSET(CONTEXT, R13),     dbg_itype_unsigned_long_int},
 125     {CV_AMD64_R14,      "R14",          (DWORD*)FIELD_OFFSET(CONTEXT, R14),     dbg_itype_unsigned_long_int},
 126     {CV_AMD64_R15,      "R15",          (DWORD*)FIELD_OFFSET(CONTEXT, R15),     dbg_itype_unsigned_long_int},
 127     {0,                 NULL,           0,                                      dbg_itype_none}
 128 };
 129
 130 static const struct dbg_internal_var* be_x86_64_init_registers(CONTEXT* ctx)
 131 {
 132     struct dbg_internal_var*    div;
 133
 134     for (div = be_x86_64_ctx; div->name; div++)
 135         div->pval = (DWORD*)((char*)ctx + (DWORD_PTR)div->pval);
 136     return be_x86_64_ctx;
 137 }
 138
 139 static unsigned be_x86_64_is_step_over_insn(const void* insn)
 140 {
 141     dbg_printf("not done step_over_insn\n");
 142     return FALSE;
 143 }
 144
 145 static unsigned be_x86_64_is_function_return(const void* insn)
 146 {
 147     dbg_printf("not done is_function_return\n");
 148     return FALSE;
 149 }
 150
 151 static unsigned be_x86_64_is_break_insn(const void* insn)
 152 {
 153     dbg_printf("not done is_break_insn\n");
 154     return FALSE;
 155 }
 156
 157 static unsigned be_x86_64_is_func_call(const void* insn, ADDRESS64* callee)
 158 {
 159     dbg_printf("not done is_func_call\n");
 160     return FALSE;
 161 }
 162
 163 static void be_x86_64_disasm_one_insn(ADDRESS64* addr, int display)
 164 {
 165     dbg_printf("Disasm NIY\n");
 166 }
 167
 168 static unsigned be_x86_64_insert_Xpoint(HANDLE hProcess, const struct be_process_io* pio,
 169                                        CONTEXT* ctx, enum be_xpoint_type type,
 170                                        void* addr, unsigned long* val, unsigned size)
 171 {
 172     dbg_printf("not done insert_Xpoint\n");
 173     return 0;
 174 }
 175
 176 static unsigned be_x86_64_remove_Xpoint(HANDLE hProcess, const struct be_process_io* pio,
 177                                        CONTEXT* ctx, enum be_xpoint_type type,
 178                                        void* addr, unsigned long val, unsigned size)
 179 {
 180     dbg_printf("not done remove_Xpoint\n");
 181     return FALSE;
 182 }
 183
 184 static unsigned be_x86_64_is_watchpoint_set(const CONTEXT* ctx, unsigned idx)
 185 {
 186     dbg_printf("not done is_watchpoint_set\n");
 187     return FALSE;
 188 }
 189
 190 static void be_x86_64_clear_watchpoint(CONTEXT* ctx, unsigned idx)
 191 {
 192     dbg_printf("not done clear_watchpoint\n");
 193 }
 194
 195 static int be_x86_64_adjust_pc_for_break(CONTEXT* ctx, BOOL way)
 196 {
 197     if (way)
 198     {
 199         ctx->Rip--;
 200         return -1;
 201     }
 202     ctx->Rip++;
 203     return 1;
 204 }
 205
 206 static int be_x86_64_fetch_integer(const struct dbg_lvalue* lvalue, unsigned size,
 207                                   unsigned ext_sign, LONGLONG* ret)
 208 {
 209     dbg_printf("not done fetch_integer\n");
 210     return FALSE;
 211 }
 212
 213 static int be_x86_64_fetch_float(const struct dbg_lvalue* lvalue, unsigned size,
 214                                 long double* ret)
 215 {
 216     dbg_printf("not done fetch_float\n");
 217     return FALSE;
 218 }
 219
 220 struct backend_cpu be_x86_64 =
 221 {
 222     be_cpu_linearize,
 223     be_cpu_build_addr,
 224     be_x86_64_get_addr,
 225     be_x86_64_get_register_info,
 226     be_x86_64_single_step,
 227     be_x86_64_print_context,
 228     be_x86_64_print_segment_info,
 229     be_x86_64_init_registers,
 230     be_x86_64_is_step_over_insn,
 231     be_x86_64_is_function_return,
 232     be_x86_64_is_break_insn,
 233     be_x86_64_is_func_call,
 234     be_x86_64_disasm_one_insn,
 235     be_x86_64_insert_Xpoint,
 236     be_x86_64_remove_Xpoint,
 237     be_x86_64_is_watchpoint_set,
 238     be_x86_64_clear_watchpoint,
 239     be_x86_64_adjust_pc_for_break,
 240     be_x86_64_fetch_integer,
 241     be_x86_64_fetch_float,
 242 };
 243 #endif