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e160c0fb26
- Totally dynamic based on the principle of Native Providers built-in the Kernel (like Screen,
FileLog and Serial) and a pluggable Wrapper which is optionally compiled (Bochs, GDB)
- Nothing changed in KDBG, except for that its settings (KDSERIAL/KDNOECHO) are now stored in
KdbDebugState instead.
- Wrappers are currently built uncondtionally. With rbuild, I'll make them easily removable.
- Debug Log code simplified greatly, sped up and now supports printing even the first boot messages,
which wasn't supported before.
- Removed most of KDBG compile-time settings, ones which are needed are in include/dbg as macros now.
- Left in some kdbg init code and break code, but it could be made to be used as a 'wrapper' for those
functions. I will do it later.
- Made a hack for KdpEnterDebuggerException..it seems to be called differently and at different times
for GDB vs KDBG and I couldn't unite them.
- KdpServiceDispatcher now does both the documented and ros-internal debug functions and will eventually
be called through INT2D from keyboard.sys instead of as an API.
All in all, this patch makes KD separated from KDBG and creates a pluggable architecture for creating future wrappers that don't require changing tons of code in the future. It improves the debug
log by printing even the earliest debug messages to it and it removes many of the manual ifdef(KDBG) but making them automatic though a single macro file. It makes extra debugging functionality optional and it
allows removal of a private API from our exports.
svn path=/trunk/; revision=14799
170 lines
3.7 KiB
C
170 lines
3.7 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: ntoskrnl/kd/service.c
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* PURPOSE: Debug service dispatcher
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*
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* PROGRAMMERS: Eric Kohl (ekohl@abo.rhein-zeitung.de)
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*/
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#include <ntoskrnl.h>
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/* FUNCTIONS ***************************************************************/
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#define _STR(x) #x
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#define STR(x) _STR(x)
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#if defined(__GNUC__)
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void interrupt_handler2d(void);
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__asm__("\n\t.global _interrupt_handler2d\n\t"
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"_interrupt_handler2d:\n\t"
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/* Save the user context */
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"pushl %ebp\n\t" /* Ebp */
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"pushl %eax\n\t" /* Eax */
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"pushl %ecx\n\t" /* Ecx */
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"pushl %edx\n\t" /* Edx */
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"pushl %ebx\n\t" /* Ebx */
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"pushl %esi\n\t" /* Esi */
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"pushl %edi\n\t" /* Edi */
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"pushl %ds\n\t" /* SegDs */
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"pushl %es\n\t" /* SegEs */
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"pushl %fs\n\t" /* SegFs */
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"pushl %gs\n\t" /* SegGs */
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"subl $112,%esp\n\t" /* FloatSave */
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"pushl $0\n\t" /* Dr7 */
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"pushl $0\n\t" /* Dr6 */
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"pushl $0\n\t" /* Dr3 */
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"pushl $0\n\t" /* Dr2 */
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"pushl $0\n\t" /* Dr1 */
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"pushl $0\n\t" /* Dr0 */
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"pushl $0\n\t" /* ContextFlags */
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/* Set ES to kernel segment */
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"movw $"STR(KERNEL_DS)",%bx\n\t"
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"movw %bx,%es\n\t"
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/* FIXME: check to see if SS is valid/inrange */
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/* DS and GS are now also kernel segments */
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"movw %bx,%ds\n\t"
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"movw %bx,%gs\n\t"
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/* Set FS to the PCR */
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"movw $"STR(PCR_SELECTOR)",%bx\n\t"
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"movw %bx,%fs\n\t"
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/* Call debug service dispatcher */
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"pushl %edx\n\t"
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"pushl %ecx\n\t"
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"pushl %eax\n\t"
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"call _KdpServiceDispatcher@12\n\t"
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/* Restore the user context */
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"addl $4,%esp\n\t" /* UserContext */
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"addl $24,%esp\n\t" /* Dr[0-3,6-7] */
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"addl $112,%esp\n\t" /* FloatingSave */
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"popl %gs\n\t" /* SegGs */
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"popl %fs\n\t" /* SegFs */
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"popl %es\n\t" /* SegEs */
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"popl %ds\n\t" /* SegDs */
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"popl %edi\n\t" /* Edi */
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"popl %esi\n\t" /* Esi */
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"popl %ebx\n\t" /* Ebx */
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"popl %edx\n\t" /* Edx */
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"popl %ecx\n\t" /* Ecx */
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"addl $4,%esp\n\t" /* Eax (Not restored) */
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"popl %ebp\n\t" /* Ebp */
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"iret\n\t");
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#elif defined(_MSC_VER)
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__declspec(naked)
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void interrupt_handler2d()
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{
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__asm
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{
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/* Save the user context */
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push ebp
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push eax
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push ecx
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push edx
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push ebx
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push esi
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push edi
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push ds
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push es
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push fs
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push gs
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sub esp, 112 /* FloatSave */
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mov ebx, eax
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mov eax, dr7 __asm push eax
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mov eax, dr6 __asm push eax
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mov eax, dr3 __asm push eax
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mov eax, dr2 __asm push eax
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mov eax, dr1 __asm push eax
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mov eax, dr0 __asm push eax
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mov eax, ebx
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push 0 /* ContextFlags */
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/* Set ES to kernel segment */
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mov bx, KERNEL_DS
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mov es, bx
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/* FIXME: check to see if SS is valid/inrange */
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mov ds, bx /* DS is now also kernel segment */
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/* Call debug service dispatcher */
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push edx
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push ecx
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push eax
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call KdpServiceDispatcher
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add esp, 12 /* restore stack pointer */
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/* Restore the user context */
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add esp, 4 /* UserContext */
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pop eax __asm mov dr0, eax
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pop eax __asm mov dr1, eax
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pop eax __asm mov dr2, eax
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pop eax __asm mov dr3, eax
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pop eax __asm mov dr6, eax
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pop eax __asm mov dr7, eax
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add esp, 112 /* FloatingSave */
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pop gs
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pop fs
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pop es
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pop ds
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pop edi
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pop esi
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pop ebx
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pop edx
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pop ecx
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add esp, 4 /* Eax Not restored */
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pop ebp
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iretd
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}
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}
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#else
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#error Unknown compiler for inline assembler
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#endif
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/* EOF */
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