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146 lines
3.6 KiB
ArmAsm
146 lines
3.6 KiB
ArmAsm
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#include <asm.inc>
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#include <ks386.inc>
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EXTERN _KdbEnterDebuggerException:PROC
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.code
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PUBLIC _KdbEnter
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_KdbEnter:
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/*
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* Set up a trap frame
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*/
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pushf /* Eflags */
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push cs /* Cs */
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push 0 /* ErrorCode */
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push ebp /* Ebp */
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push ebx /* Ebx */
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mov ebp, [esp + 20] /* Eip */
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mov ebx, [esp + 16] /* Eflags */
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mov [esp + 20], ebx
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mov ebx, [esp + 12] /* Cs */
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mov [esp + 16], ebx
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mov [esp + 12], ebp
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push esi /* Esi */
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push edi /* Edi */
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push fs /* Fs */
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push 0 /* ExceptionList */
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push 0 /* PreviousMode */
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push eax /* Eax */
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push ecx /* Ecx */
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push edx /* Edx */
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push ds /* Ds */
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push es /* Es */
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push gs /* Gs */
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mov eax, dr7
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push eax /* Dr7 */
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/* Clear all breakpoint enables in dr7. */
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and eax, HEX(0FFFF0000)
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mov dr7, eax
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mov eax, dr6
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push eax /* Dr6 */
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mov eax, dr3
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push eax /* Dr3 */
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mov eax, dr2
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push eax /* Dr2 */
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mov eax, dr1
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push eax /* Dr1 */
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mov eax, dr0
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push eax /* Dr0 */
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lea eax, [esp + HEX(58)]
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push eax /* TempEsp */
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push ss /* TempSegSs */
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push 0 /* DebugPointer */
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push 3 /* DebugArgMark (Exception number) */
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push [esp + HEX(60)] /* DebugEip */
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push ebp /* DebugEbp */
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/*
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* Call KDB
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*/
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mov eax, esp
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push 1 /* FirstChance */
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push eax /* Push a pointer to the trap frame */
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push 0 /* Context */
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push 0 /* PreviousMode (KernelMode) */
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push 0 /* ExceptionRecord */
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call _KdbEnterDebuggerException
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/*
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* Pop the arguments and unused portions of the trap frame:
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* DebugEbp
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* DebugEip
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* DebugArgMark
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* DebugPointer
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* TempSegSs
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* TempEsp
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*/
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add esp, 11*4
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/*
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* Restore/update debugging registers.
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*/
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pop eax /* Dr0 */
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mov dr0, eax
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pop eax /* Dr1 */
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mov dr1, eax
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pop eax /* Dr2 */
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mov dr2, eax
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pop eax /* Dr3 */
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mov dr3, eax
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pop eax /* Dr6 */
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mov dr6, eax
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pop eax /* Dr7 */
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mov dr7, eax
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/*
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* Restore registers including any that might have been changed
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* inside the debugger.
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*/
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pop gs /* Gs */
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pop es /* Es */
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pop ds /* Ds */
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pop edx /* Edx */
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pop ecx /* Ecx */
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pop eax /* Eax */
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add esp, 8 /* PreviousMode, ExceptionList */
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pop fs /* Fs */
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pop edi /* Edi */
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pop esi /* Esi */
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pop ebx /* Ebx */
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pop ebp /* Ebp */
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add esp, 4 /* ErrorCode */
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/*
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* Return to the caller.
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*/
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iretd
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PUBLIC _KdbpStackSwitchAndCall@8
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_KdbpStackSwitchAndCall@8:
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push ebp
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mov ebp, esp
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mov eax, [esp + 8] /* New stack */
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mov ecx, [esp + 12] /* Function to call */
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mov edx, esp /* Old stack */
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/* Switch stack */
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mov esp, eax
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push edx
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/* Call function */
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call ecx
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/* Switch back to old stack */
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pop esp
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/* Return */
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pop ebp
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ret 8
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END
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