common_windows.c

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// SPDX-FileCopyrightText: 2022 GustavoLCR
// SPDX-License-Identifier: LGPL-3.0-only
 
#include "common_windows.h"
 
#define EXCEPTION_ACCESS_VIOLATION         0xC0000005
#define EXCEPTION_DATATYPE_MISALIGNMENT    0x80000002
#define EXCEPTION_BREAKPOINT               0x80000003
#define EXCEPTION_SINGLE_STEP              0x80000004
#define EXCEPTION_ARRAY_BOUNDS_EXCEEDED    0xC000008C
#define EXCEPTION_FLT_DENORMAL_OPERAND     0xC000008D
#define EXCEPTION_FLT_DIVIDE_BY_ZERO       0xC000008E
#define EXCEPTION_FLT_INEXACT_RESULT       0xC000008F
#define EXCEPTION_FLT_INVALID_OPERATION    0xC0000090
#define EXCEPTION_FLT_OVERFLOW             0xC0000091
#define EXCEPTION_FLT_STACK_CHECK          0xC0000092
#define EXCEPTION_FLT_UNDERFLOW            0xC0000093
#define EXCEPTION_INT_DIVIDE_BY_ZERO       0xC0000094
#define EXCEPTION_INT_OVERFLOW             0xC0000095
#define EXCEPTION_PRIV_INSTRUCTION         0xC0000096
#define EXCEPTION_IN_PAGE_ERROR            0xC0000006
#define EXCEPTION_ILLEGAL_INSTRUCTION      0xC000001D
#define EXCEPTION_NONCONTINUABLE_EXCEPTION 0xC0000025
#define EXCEPTION_STACK_OVERFLOW           0xC00000FD
#define EXCEPTION_INVALID_DISPOSITION      0xC0000026
#define EXCEPTION_GUARD_PAGE               0x80000001
#define EXCEPTION_INVALID_HANDLE           0xC0000008
#define EXCEPTION_POSSIBLE_DEADLOCK        0xC0000194
#define CONTROL_C_EXIT                     0x40010005
#define DBG_CONTROL_BREAK                  0x40010008
#define STATUS_UNWIND_CONSOLIDATE          0x80000029
 
RzDebugReasonType windows_exception_to_reason(ut32 exception_code) {
    switch (exception_code) {
    case EXCEPTION_ACCESS_VIOLATION:
    case EXCEPTION_GUARD_PAGE:
        return RZ_DEBUG_REASON_SEGFAULT;
    case EXCEPTION_BREAKPOINT:
        return RZ_DEBUG_REASON_BREAKPOINT;
    case EXCEPTION_FLT_DENORMAL_OPERAND:
    case EXCEPTION_FLT_DIVIDE_BY_ZERO:
    case EXCEPTION_FLT_INEXACT_RESULT:
    case EXCEPTION_FLT_INVALID_OPERATION:
    case EXCEPTION_FLT_OVERFLOW:
    case EXCEPTION_FLT_STACK_CHECK:
    case EXCEPTION_FLT_UNDERFLOW:
        return RZ_DEBUG_REASON_FPU;
    case EXCEPTION_ILLEGAL_INSTRUCTION:
        return RZ_DEBUG_REASON_ILLEGAL;
    case EXCEPTION_INT_DIVIDE_BY_ZERO:
        return RZ_DEBUG_REASON_DIVBYZERO;
    case EXCEPTION_SINGLE_STEP:
        return RZ_DEBUG_REASON_STEP;
    default:
        return RZ_DEBUG_REASON_TRAP;
    }
}
 
static const char *get_exception_name(ut32 ExceptionCode) {
#define EXCEPTION_STR(x) \
    case x: return #x
    switch (ExceptionCode) {
        EXCEPTION_STR(EXCEPTION_ACCESS_VIOLATION);
        EXCEPTION_STR(EXCEPTION_ARRAY_BOUNDS_EXCEEDED);
        EXCEPTION_STR(EXCEPTION_BREAKPOINT);
        EXCEPTION_STR(EXCEPTION_DATATYPE_MISALIGNMENT);
        EXCEPTION_STR(EXCEPTION_FLT_DENORMAL_OPERAND);
        EXCEPTION_STR(EXCEPTION_FLT_DIVIDE_BY_ZERO);
        EXCEPTION_STR(EXCEPTION_FLT_INEXACT_RESULT);
        EXCEPTION_STR(EXCEPTION_FLT_INVALID_OPERATION);
        EXCEPTION_STR(EXCEPTION_FLT_OVERFLOW);
        EXCEPTION_STR(EXCEPTION_FLT_STACK_CHECK);
        EXCEPTION_STR(EXCEPTION_FLT_UNDERFLOW);
        EXCEPTION_STR(EXCEPTION_GUARD_PAGE);
        EXCEPTION_STR(EXCEPTION_ILLEGAL_INSTRUCTION);
        EXCEPTION_STR(EXCEPTION_IN_PAGE_ERROR);
        EXCEPTION_STR(EXCEPTION_INT_DIVIDE_BY_ZERO);
        EXCEPTION_STR(EXCEPTION_INT_OVERFLOW);
        EXCEPTION_STR(EXCEPTION_INVALID_DISPOSITION);
        EXCEPTION_STR(EXCEPTION_INVALID_HANDLE);
        EXCEPTION_STR(EXCEPTION_NONCONTINUABLE_EXCEPTION);
        EXCEPTION_STR(EXCEPTION_PRIV_INSTRUCTION);
        EXCEPTION_STR(EXCEPTION_SINGLE_STEP);
        EXCEPTION_STR(EXCEPTION_STACK_OVERFLOW);
        EXCEPTION_STR(STATUS_UNWIND_CONSOLIDATE);
        EXCEPTION_STR(EXCEPTION_POSSIBLE_DEADLOCK);
        EXCEPTION_STR(DBG_CONTROL_BREAK);
        EXCEPTION_STR(CONTROL_C_EXIT);
    case 0x6BA: return "FILE_DIALOG_EXCEPTION";
    case 0x406D1388: return "MS_VC_EXCEPTION";
    default:
        return "Unknown";
    }
#undef EXCEPTION_STR
}
 
bool windows_is_exception_fatal(ut32 exception_code) {
    switch (exception_code) {
    case EXCEPTION_ACCESS_VIOLATION:
    case EXCEPTION_ARRAY_BOUNDS_EXCEEDED:
    case EXCEPTION_ILLEGAL_INSTRUCTION:
    case EXCEPTION_INT_DIVIDE_BY_ZERO:
    case EXCEPTION_STACK_OVERFLOW:
    case EXCEPTION_GUARD_PAGE:
    case EXCEPTION_PRIV_INSTRUCTION:
    case EXCEPTION_NONCONTINUABLE_EXCEPTION:
    case EXCEPTION_FLT_STACK_CHECK:
    case EXCEPTION_IN_PAGE_ERROR:
        return true;
    default:
        return false;
    }
}
 
void windows_print_exception_event(ut32 pid, ut32 tid, ut32 exception_code, bool second_chance) {
    bool is_fatal = windows_is_exception_fatal(exception_code);
    RZ_LOG_INFO("(%" PFMT32u ") %s Exception %04X (%s) in thread %" PFMT32u "\n",
        pid,
        is_fatal ? "Fatal" : "Non-fatal",
        exception_code, get_exception_name(exception_code),
        tid);
    if (second_chance) {
        RZ_LOG_WARN("A second-chance exception has ocurred!\n");
    }
    if (is_fatal) {
        RZ_LOG_INFO("Use 'dce' continue into exception handler\n");
    }
}