mirror of
https://github.com/reactos/reactos.git
synced 2024-08-07 19:58:21 +00:00
Removed unix newlines
svn path=/trunk/; revision=4653
This commit is contained in:
Eric Kohl
parent
e0352540ed
commit
2b3487d3d6
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@ -1,291 +1,291 @@
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|||
/* $Id: except.s,v 1.2 2002/10/26 07:32:08 chorns Exp $
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* PURPOSE: User-mode exception support for IA-32
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* FILE: lib/ntdll/rtl/i386/except.s
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* PROGRAMER: Casper S. Hornstrup (chorns@users.sourceforge.net)
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* NOTES: This file is shared with ntoskrnl/rtl/i386/except.s.
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* Please keep them in sync.
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*/
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#define EXCEPTION_UNWINDING 0x02
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#define EREC_FLAGS 0x04
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#define ExceptionContinueExecution 0
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#define ExceptionContinueSearch 1
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#define ExceptionNestedException 2
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#define ExceptionCollidedUnwind 3
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.globl _RtlpExecuteHandlerForException
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.globl _RtlpExecuteHandlerForUnwind
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#define CONTEXT_FLAGS 0x00
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#define CONTEXT_SEGGS 0x8C
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#define CONTEXT_SEGFS 0x90
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#define CONTEXT_SEGES 0x94
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#define CONTEXT_SEGDS 0x98
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#define CONTEXT_EDI 0x9C
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#define CONTEXT_ESI 0xA0
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#define CONTEXT_EBX 0xA4
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#define CONTEXT_EDX 0xA8
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#define CONTEXT_ECX 0xAC
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#define CONTEXT_EAX 0xB0
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#define CONTEXT_EBP 0xB4
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#define CONTEXT_EIP 0xB8
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#define CONTEXT_SEGCS 0xBC
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#define CONTEXT_EFLAGS 0xC0
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#define CONTEXT_ESP 0xC4
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#define CONTEXT_SEGSS 0xC8
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#define RCC_CONTEXT 0x08
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// EAX = value to print
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_do_debug:
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pushal
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pushl %eax
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call _AsmDebug@4
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popal
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ret
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#ifndef __NTOSKRNL__
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//
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// VOID
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// RtlpCaptureContext(PCONTEXT pContext);
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//
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// Parameters:
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// [ESP+08h] - PCONTEXT_X86 pContext
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// Registers:
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// None
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// Returns:
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// Nothing
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// Notes:
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// Grabs the current CPU context.
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.globl _RtlpCaptureContext
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_RtlpCaptureContext:
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pushl %ebp
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movl %esp, %ebp
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movl RCC_CONTEXT(%ebp), %edx // EDX = Address of context structure
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cld
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pushf
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pop %eax
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movl %eax, CONTEXT_EFLAGS(%edx)
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xorl %eax, %eax
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movl %eax, CONTEXT_EAX(%edx)
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movl %eax, CONTEXT_EBX(%edx)
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movl %eax, CONTEXT_ECX(%edx)
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movl %eax, CONTEXT_EDX(%edx)
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movl %eax, CONTEXT_ESI(%edx)
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movl %eax, CONTEXT_EDI(%edx)
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movl %cs, %eax
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movl %eax, CONTEXT_SEGCS(%edx)
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movl %ds, %eax
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movl %eax, CONTEXT_SEGDS(%edx)
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movl %es, %eax
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movl %eax, CONTEXT_SEGES(%edx)
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movl %fs, %eax
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movl %eax, CONTEXT_SEGFS(%edx)
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movl %gs, %eax
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movl %eax, CONTEXT_SEGGS(%edx)
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movl %ss, %eax
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movl %eax, CONTEXT_SEGSS(%edx)
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//
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// STACK LAYOUT: - (ESP to put in context structure)
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// - RETURN ADDRESS OF CALLER OF CALLER
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// - EBP OF CALLER OF CALLER
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// ...
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// - RETURN ADDRESS OF CALLER
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// - EBP OF CALLER
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// ...
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//
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// Get return address of the caller of the caller of this function
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movl %ebp, %ebx
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//movl 4(%ebx), %eax // EAX = return address of caller
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movl (%ebx), %ebx // EBX = EBP of caller
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movl 4(%ebx), %eax // EAX = return address of caller of caller
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movl (%ebx), %ebx // EBX = EBP of caller of caller
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movl %eax, CONTEXT_EIP(%edx) // EIP = return address of caller of caller
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movl %ebx, CONTEXT_EBP(%edx) // EBP = EBP of caller of caller
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addl $8, %ebx
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movl %ebx, CONTEXT_ESP(%edx) // ESP = EBP of caller of caller + 8
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movl %ebp, %esp
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popl %ebp
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ret
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#endif /* !__NTOSKRNL__ */
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#define REH_ERECORD 0x08
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#define REH_RFRAME 0x0C
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#define REH_CONTEXT 0x10
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#define REH_DCONTEXT 0x14
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#define REH_EROUTINE 0x18
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// Parameters:
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// None
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// Registers:
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// [EBP+08h] - PEXCEPTION_RECORD ExceptionRecord
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// [EBP+0Ch] - PEXCEPTION_REGISTRATION RegistrationFrame
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// [EBP+10h] - PVOID Context
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// [EBP+14h] - PVOID DispatcherContext
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// [EBP+18h] - PEXCEPTION_HANDLER ExceptionRoutine
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// EDX - Address of protecting exception handler
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// Returns:
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// EXCEPTION_DISPOSITION
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// Notes:
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// Setup the protecting exception handler and call the exception
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// handler in the right context.
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_RtlpExecuteHandler:
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pushl %ebp
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movl %esp, %ebp
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pushl REH_RFRAME(%ebp)
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pushl %edx
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pushl %fs:0x0
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movl %esp, %fs:0x0
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// Prepare to call the exception handler
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pushl REH_DCONTEXT(%ebp)
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pushl REH_CONTEXT(%ebp)
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pushl REH_RFRAME(%ebp)
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pushl REH_ERECORD(%ebp)
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// Now call the exception handler
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movl REH_EROUTINE(%ebp), %eax
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call *%eax
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cmpl $-1, %fs:0x0
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jne .reh_stack_looks_ok
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// This should not happen
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pushl 0
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pushl 0
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pushl 0
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pushl 0
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call _RtlAssert@16
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.reh_loop:
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jmp .reh_loop
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.reh_stack_looks_ok:
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movl %fs:0x0, %esp
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// Return to the 'front-end' for this function
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popl %fs:0x0
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movl %ebp, %esp
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popl %ebp
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ret
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#define REP_ERECORD 0x04
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#define REP_RFRAME 0x08
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#define REP_CONTEXT 0x0C
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#define REP_DCONTEXT 0x10
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// Parameters:
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// [ESP+04h] - PEXCEPTION_RECORD ExceptionRecord
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// [ESP+08h] - PEXCEPTION_REGISTRATION RegistrationFrame
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// [ESP+0Ch] - PCONTEXT Context
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// [ESP+10h] - PVOID DispatcherContext
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// Registers:
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// None
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// Returns:
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// EXCEPTION_DISPOSITION
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// Notes:
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// This exception handler protects the exception handling
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// mechanism by detecting nested exceptions.
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_RtlpExceptionProtector:
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movl $ExceptionContinueSearch, %eax
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movl REP_ERECORD(%esp), %ecx
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testl $EXCEPTION_UNWINDING, EREC_FLAGS(%ecx)
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jnz .rep_end
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// Unwinding is not taking place, so return ExceptionNestedException
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// Set DispatcherContext field to the exception registration for the
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// exception handler that executed when a nested exception occurred
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movl REP_DCONTEXT(%esp), %ecx
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movl REP_RFRAME(%esp), %eax
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movl %eax, (%ecx)
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movl $ExceptionNestedException, %eax
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.rep_end:
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ret
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// Parameters:
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// [ESP+04h] - PEXCEPTION_RECORD ExceptionRecord
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// [ESP+08h] - PEXCEPTION_REGISTRATION RegistrationFrame
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// [ESP+0Ch] - PCONTEXT Context
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// [ESP+10h] - PVOID DispatcherContext
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// [ESP+14h] - PEXCEPTION_HANDLER ExceptionHandler
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// Registers:
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// None
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// Returns:
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// EXCEPTION_DISPOSITION
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// Notes:
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// Front-end
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_RtlpExecuteHandlerForException:
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movl $_RtlpExceptionProtector, %edx
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jmp _RtlpExecuteHandler
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#define RUP_ERECORD 0x04
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#define RUP_RFRAME 0x08
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#define RUP_CONTEXT 0x0C
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#define RUP_DCONTEXT 0x10
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// Parameters:
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// [ESP+04h] - PEXCEPTION_RECORD ExceptionRecord
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// [ESP+08h] - PEXCEPTION_REGISTRATION RegistrationFrame
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// [ESP+0Ch] - PCONTEXT Context
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// [ESP+10h] - PVOID DispatcherContext
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// Registers:
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// None
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// Returns:
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// EXCEPTION_DISPOSITION
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// Notes:
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// This exception handler protects the exception handling
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// mechanism by detecting collided unwinds.
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_RtlpUnwindProtector:
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movl $ExceptionContinueSearch, %eax
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movl %ecx, RUP_ERECORD(%esp)
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testl $EXCEPTION_UNWINDING, EREC_FLAGS(%ecx)
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jz .rup_end
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// Unwinding is taking place, so return ExceptionCollidedUnwind
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movl RUP_RFRAME(%esp), %ecx
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movl RUP_DCONTEXT(%esp), %edx
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// Set DispatcherContext field to the exception registration for the
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// exception handler that executed when a collision occurred
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movl RUP_RFRAME(%ecx), %eax
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movl %eax, (%edx)
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movl $ExceptionCollidedUnwind, %eax
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.rup_end:
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ret
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// Parameters:
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// [ESP+04h] - PEXCEPTION_RECORD ExceptionRecord
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// [ESP+08h] - PEXCEPTION_REGISTRATION RegistrationFrame
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// [ESP+0Ch] - PCONTEXT Context
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// [ESP+10h] - PVOID DispatcherContext
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// [ESP+14h] - PEXCEPTION_HANDLER ExceptionHandler
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// Registers:
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// None
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// Returns:
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// EXCEPTION_DISPOSITION
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_RtlpExecuteHandlerForUnwind:
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movl $_RtlpUnwindProtector, %edx
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jmp _RtlpExecuteHandler
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/* $Id: except.s,v 1.3 2003/05/07 18:45:56 ekohl Exp $
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* PURPOSE: User-mode exception support for IA-32
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* FILE: lib/ntdll/rtl/i386/except.s
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* PROGRAMER: Casper S. Hornstrup (chorns@users.sourceforge.net)
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* NOTES: This file is shared with ntoskrnl/rtl/i386/except.s.
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* Please keep them in sync.
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*/
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#define EXCEPTION_UNWINDING 0x02
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#define EREC_FLAGS 0x04
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#define ExceptionContinueExecution 0
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#define ExceptionContinueSearch 1
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#define ExceptionNestedException 2
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#define ExceptionCollidedUnwind 3
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.globl _RtlpExecuteHandlerForException
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.globl _RtlpExecuteHandlerForUnwind
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#define CONTEXT_FLAGS 0x00
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#define CONTEXT_SEGGS 0x8C
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#define CONTEXT_SEGFS 0x90
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#define CONTEXT_SEGES 0x94
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#define CONTEXT_SEGDS 0x98
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#define CONTEXT_EDI 0x9C
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#define CONTEXT_ESI 0xA0
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#define CONTEXT_EBX 0xA4
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#define CONTEXT_EDX 0xA8
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#define CONTEXT_ECX 0xAC
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#define CONTEXT_EAX 0xB0
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#define CONTEXT_EBP 0xB4
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#define CONTEXT_EIP 0xB8
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#define CONTEXT_SEGCS 0xBC
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#define CONTEXT_EFLAGS 0xC0
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#define CONTEXT_ESP 0xC4
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#define CONTEXT_SEGSS 0xC8
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#define RCC_CONTEXT 0x08
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// EAX = value to print
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_do_debug:
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pushal
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pushl %eax
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call _AsmDebug@4
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popal
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ret
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#ifndef __NTOSKRNL__
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//
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// VOID
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// RtlpCaptureContext(PCONTEXT pContext);
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//
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// Parameters:
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// [ESP+08h] - PCONTEXT_X86 pContext
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||||
// Registers:
|
||||
// None
|
||||
// Returns:
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||||
// Nothing
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// Notes:
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// Grabs the current CPU context.
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.globl _RtlpCaptureContext
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_RtlpCaptureContext:
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pushl %ebp
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movl %esp, %ebp
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movl RCC_CONTEXT(%ebp), %edx // EDX = Address of context structure
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cld
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pushf
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pop %eax
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movl %eax, CONTEXT_EFLAGS(%edx)
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xorl %eax, %eax
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movl %eax, CONTEXT_EAX(%edx)
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movl %eax, CONTEXT_EBX(%edx)
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movl %eax, CONTEXT_ECX(%edx)
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movl %eax, CONTEXT_EDX(%edx)
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movl %eax, CONTEXT_ESI(%edx)
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movl %eax, CONTEXT_EDI(%edx)
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movl %cs, %eax
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movl %eax, CONTEXT_SEGCS(%edx)
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movl %ds, %eax
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movl %eax, CONTEXT_SEGDS(%edx)
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movl %es, %eax
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movl %eax, CONTEXT_SEGES(%edx)
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movl %fs, %eax
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movl %eax, CONTEXT_SEGFS(%edx)
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movl %gs, %eax
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movl %eax, CONTEXT_SEGGS(%edx)
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movl %ss, %eax
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movl %eax, CONTEXT_SEGSS(%edx)
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//
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// STACK LAYOUT: - (ESP to put in context structure)
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||||
// - RETURN ADDRESS OF CALLER OF CALLER
|
||||
// - EBP OF CALLER OF CALLER
|
||||
// ...
|
||||
// - RETURN ADDRESS OF CALLER
|
||||
// - EBP OF CALLER
|
||||
// ...
|
||||
//
|
||||
|
||||
// Get return address of the caller of the caller of this function
|
||||
movl %ebp, %ebx
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//movl 4(%ebx), %eax // EAX = return address of caller
|
||||
movl (%ebx), %ebx // EBX = EBP of caller
|
||||
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movl 4(%ebx), %eax // EAX = return address of caller of caller
|
||||
movl (%ebx), %ebx // EBX = EBP of caller of caller
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movl %eax, CONTEXT_EIP(%edx) // EIP = return address of caller of caller
|
||||
movl %ebx, CONTEXT_EBP(%edx) // EBP = EBP of caller of caller
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addl $8, %ebx
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movl %ebx, CONTEXT_ESP(%edx) // ESP = EBP of caller of caller + 8
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movl %ebp, %esp
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popl %ebp
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ret
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#endif /* !__NTOSKRNL__ */
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||||
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#define REH_ERECORD 0x08
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#define REH_RFRAME 0x0C
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#define REH_CONTEXT 0x10
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#define REH_DCONTEXT 0x14
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||||
#define REH_EROUTINE 0x18
|
||||
|
||||
// Parameters:
|
||||
// None
|
||||
// Registers:
|
||||
// [EBP+08h] - PEXCEPTION_RECORD ExceptionRecord
|
||||
// [EBP+0Ch] - PEXCEPTION_REGISTRATION RegistrationFrame
|
||||
// [EBP+10h] - PVOID Context
|
||||
// [EBP+14h] - PVOID DispatcherContext
|
||||
// [EBP+18h] - PEXCEPTION_HANDLER ExceptionRoutine
|
||||
// EDX - Address of protecting exception handler
|
||||
// Returns:
|
||||
// EXCEPTION_DISPOSITION
|
||||
// Notes:
|
||||
// Setup the protecting exception handler and call the exception
|
||||
// handler in the right context.
|
||||
_RtlpExecuteHandler:
|
||||
pushl %ebp
|
||||
movl %esp, %ebp
|
||||
pushl REH_RFRAME(%ebp)
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||||
pushl %edx
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||||
pushl %fs:0x0
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||||
movl %esp, %fs:0x0
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||||
|
||||
// Prepare to call the exception handler
|
||||
pushl REH_DCONTEXT(%ebp)
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pushl REH_CONTEXT(%ebp)
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||||
pushl REH_RFRAME(%ebp)
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||||
pushl REH_ERECORD(%ebp)
|
||||
|
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// Now call the exception handler
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||||
movl REH_EROUTINE(%ebp), %eax
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||||
call *%eax
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||||
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||||
cmpl $-1, %fs:0x0
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||||
jne .reh_stack_looks_ok
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||||
|
||||
// This should not happen
|
||||
pushl 0
|
||||
pushl 0
|
||||
pushl 0
|
||||
pushl 0
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||||
call _RtlAssert@16
|
||||
|
||||
.reh_loop:
|
||||
jmp .reh_loop
|
||||
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||||
.reh_stack_looks_ok:
|
||||
movl %fs:0x0, %esp
|
||||
|
||||
// Return to the 'front-end' for this function
|
||||
popl %fs:0x0
|
||||
movl %ebp, %esp
|
||||
popl %ebp
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||||
ret
|
||||
|
||||
|
||||
#define REP_ERECORD 0x04
|
||||
#define REP_RFRAME 0x08
|
||||
#define REP_CONTEXT 0x0C
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||||
#define REP_DCONTEXT 0x10
|
||||
|
||||
// Parameters:
|
||||
// [ESP+04h] - PEXCEPTION_RECORD ExceptionRecord
|
||||
// [ESP+08h] - PEXCEPTION_REGISTRATION RegistrationFrame
|
||||
// [ESP+0Ch] - PCONTEXT Context
|
||||
// [ESP+10h] - PVOID DispatcherContext
|
||||
// Registers:
|
||||
// None
|
||||
// Returns:
|
||||
// EXCEPTION_DISPOSITION
|
||||
// Notes:
|
||||
// This exception handler protects the exception handling
|
||||
// mechanism by detecting nested exceptions.
|
||||
_RtlpExceptionProtector:
|
||||
movl $ExceptionContinueSearch, %eax
|
||||
movl REP_ERECORD(%esp), %ecx
|
||||
testl $EXCEPTION_UNWINDING, EREC_FLAGS(%ecx)
|
||||
jnz .rep_end
|
||||
|
||||
// Unwinding is not taking place, so return ExceptionNestedException
|
||||
|
||||
// Set DispatcherContext field to the exception registration for the
|
||||
// exception handler that executed when a nested exception occurred
|
||||
movl REP_DCONTEXT(%esp), %ecx
|
||||
movl REP_RFRAME(%esp), %eax
|
||||
movl %eax, (%ecx)
|
||||
movl $ExceptionNestedException, %eax
|
||||
|
||||
.rep_end:
|
||||
ret
|
||||
|
||||
|
||||
// Parameters:
|
||||
// [ESP+04h] - PEXCEPTION_RECORD ExceptionRecord
|
||||
// [ESP+08h] - PEXCEPTION_REGISTRATION RegistrationFrame
|
||||
// [ESP+0Ch] - PCONTEXT Context
|
||||
// [ESP+10h] - PVOID DispatcherContext
|
||||
// [ESP+14h] - PEXCEPTION_HANDLER ExceptionHandler
|
||||
// Registers:
|
||||
// None
|
||||
// Returns:
|
||||
// EXCEPTION_DISPOSITION
|
||||
// Notes:
|
||||
// Front-end
|
||||
_RtlpExecuteHandlerForException:
|
||||
movl $_RtlpExceptionProtector, %edx
|
||||
jmp _RtlpExecuteHandler
|
||||
|
||||
|
||||
#define RUP_ERECORD 0x04
|
||||
#define RUP_RFRAME 0x08
|
||||
#define RUP_CONTEXT 0x0C
|
||||
#define RUP_DCONTEXT 0x10
|
||||
|
||||
// Parameters:
|
||||
// [ESP+04h] - PEXCEPTION_RECORD ExceptionRecord
|
||||
// [ESP+08h] - PEXCEPTION_REGISTRATION RegistrationFrame
|
||||
// [ESP+0Ch] - PCONTEXT Context
|
||||
// [ESP+10h] - PVOID DispatcherContext
|
||||
// Registers:
|
||||
// None
|
||||
// Returns:
|
||||
// EXCEPTION_DISPOSITION
|
||||
// Notes:
|
||||
// This exception handler protects the exception handling
|
||||
// mechanism by detecting collided unwinds.
|
||||
_RtlpUnwindProtector:
|
||||
movl $ExceptionContinueSearch, %eax
|
||||
movl %ecx, RUP_ERECORD(%esp)
|
||||
testl $EXCEPTION_UNWINDING, EREC_FLAGS(%ecx)
|
||||
jz .rup_end
|
||||
|
||||
// Unwinding is taking place, so return ExceptionCollidedUnwind
|
||||
|
||||
movl RUP_RFRAME(%esp), %ecx
|
||||
movl RUP_DCONTEXT(%esp), %edx
|
||||
|
||||
// Set DispatcherContext field to the exception registration for the
|
||||
// exception handler that executed when a collision occurred
|
||||
movl RUP_RFRAME(%ecx), %eax
|
||||
movl %eax, (%edx)
|
||||
movl $ExceptionCollidedUnwind, %eax
|
||||
|
||||
.rup_end:
|
||||
ret
|
||||
|
||||
|
||||
// Parameters:
|
||||
// [ESP+04h] - PEXCEPTION_RECORD ExceptionRecord
|
||||
// [ESP+08h] - PEXCEPTION_REGISTRATION RegistrationFrame
|
||||
// [ESP+0Ch] - PCONTEXT Context
|
||||
// [ESP+10h] - PVOID DispatcherContext
|
||||
// [ESP+14h] - PEXCEPTION_HANDLER ExceptionHandler
|
||||
// Registers:
|
||||
// None
|
||||
// Returns:
|
||||
// EXCEPTION_DISPOSITION
|
||||
_RtlpExecuteHandlerForUnwind:
|
||||
movl $_RtlpUnwindProtector, %edx
|
||||
jmp _RtlpExecuteHandler
|
||||
|
|
|
|||
Loading…
Reference in a new issue