dblflt.c File Reference

#include "remods.h"
#include "precomp.h"

Include dependency graph for dblflt.c:

Go to the source code of this file.

Functions
void	HandleDoubleFault (FRAME *ptr)
	__asm__ (" \ NewDblFltHandler:\n\t \ pushfl\n\t \ cli;\n\t \ cld;\n\t \ pushal;\n\t \ pushl %ds;\n\t \ \n\t \ // setup default data selectors\n\t \ movw %ss,%ax\n\t \ movw %ax,%ds\n\t \ \n\t \ // get frame ptr\n\t \ lea 40(%esp),%eax\n\t \ pushl %eax\n\t \ call _HandleDoubleFault\n\t \ addl $4,%esp\n\t \ \n\t \ popl %ds\n\t \ popal\n\t \ popfl\n\t \ // remove error code from stack and replace with reason code\n\t \ movl $" STR(REASON_DOUBLE_FAULT) ",(%esp)\n\t \ // call debugger loop\n\t \ jmp NewInt31Handler\n\t")
void	InstallDblFltHook (void)
void	DeInstallDblFltHook (void)

Variables
ULONG	OldDblFltHandler = 0

Function Documentation

__asm__()

__asm__	(	" \NewDblFltHandler:\n\t \ pushfl\n\t \ cli;\n\t \ cld;\n\t \ pushal;\n\t \ pushl %ds;\n\t \\n\t \ // setup default data selectors\n\t \ movw %	ss,
		%ax\n\t \ movw %	ax,
		%ds\n\t \\n\t \//get frame ptr\n\t \ lea	40%esp,
		%eax\n\t \ pushl %eax\n\t \ call _HandleDoubleFault\n\t \ addl	$4,
		%esp\n\t \\n\t \ popl %ds\n\t \ popal\n\t \ popfl\n\t \//remove error code from stack and replace with reason code\n\t \ movl $" STR(REASON_DOUBLE_FAULT) "	,
		(%esp)\n\t \//call debugger loop\n\t \ jmp NewInt31Handler\n\t"
	)

Referenced by InstallDblFltHook().

DeInstallDblFltHook()

void DeInstallDblFltHook

(

void

)

Definition at line 117 of file dblflt.c.

{
    ENTER_FUNC();

    MaskIrqs();
    if(OldDblFltHandler)
    {
        RemoveAllSWBreakpoints(TRUE);
        SetGlobalInt(0x08,(ULONG)OldDblFltHandler);
        OldDblFltHandler=0;
    }
    UnmaskIrqs();

    LEAVE_FUNC();
}

Referenced by CleanUpPICE().

HandleDoubleFault()

void HandleDoubleFault

(

FRAME *

ptr

)

Definition at line 52 of file dblflt.c.

{
    DPRINT((0,"HandleDoubleFault(): ptr = %x\n",ptr));
}

InstallDblFltHook()

void InstallDblFltHook

(

void

)

Definition at line 93 of file dblflt.c.

{
    ULONG LocalDblFltHandler;

    ENTER_FUNC();

    MaskIrqs();
    if(!OldDblFltHandler)
    {
        __asm__("mov $NewDblFltHandler,%0"
            :"=r" (LocalDblFltHandler)
            :
            :"eax");
        OldDblFltHandler=SetGlobalInt(0x08,(ULONG)LocalDblFltHandler);
    }
    UnmaskIrqs();

    LEAVE_FUNC();
}

Referenced by InitPICE().

Variable Documentation

OldDblFltHandler

ULONG OldDblFltHandler = 0

Definition at line 42 of file dblflt.c.

Referenced by DeInstallDblFltHook(), and InstallDblFltHook().