372 lines
7.6 KiB
ArmAsm
372 lines
7.6 KiB
ArmAsm
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/**
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*** Copyright (C) 1996-97 Intel Corporation. All rights reserved.
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***
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*** The information and source code contained herein is the exclusive
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*** property of Intel Corporation and may not be disclosed, examined
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*** or reproduced in whole or in part without explicit written authorization
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*** from the company.
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**/
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// TITLE("Debug Support Functions")
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//++
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//
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// Module Name:
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//
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// debugstb.s
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//
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// Abstract:
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//
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// This module implements functions to support debugging NT. Each
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// function executes a break instruction with a special immediate
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// value.
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//
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// Author:
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//
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// William K. Cheung (wcheung) 17-Jan-1996
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//
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// Environment:
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//
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// Any mode.
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//
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// Revision History:
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//
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// 08-Feb-1996 Updated to EAS 2.1
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//
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//--
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#include "ksia64.h"
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//++
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//
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// VOID
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// DbgBreakPoint()
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//
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// Routine Description:
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//
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// This function executes a breakpoint instruction. Useful for entering
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// the debugger under program control. This breakpoint will always go to
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// the kernel debugger if one is installed, otherwise it will go to the
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// debug subsystem.
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//
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// Arguments:
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//
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// None.
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//
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// Return Value:
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//
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// None.
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//
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//--
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LEAF_ENTRY(DbgBreakPoint)
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flushrs
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;;
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break.i BREAKPOINT_STOP
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br.ret.sptk.clr brp
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LEAF_EXIT(DbgBreakPoint)
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//++
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//
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// VOID
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// DbgBreakPointWithStatus(
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// IN ULONG Status
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// )
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//
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// Routine Description:
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//
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// This function executes a breakpoint instruction. Useful for entering
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// the debugger under program control. This breakpoint will always go to
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// the kernel debugger if one is installed, otherwise it will go to the
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// debug subsystem. This function is identical to DbgBreakPoint, except
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// that it takes an argument which the debugger can see.
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//
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// Arguments:
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//
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// A status code.
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//
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// Return Value:
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//
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// None.
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//
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//--
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LEAF_ENTRY(DbgBreakPointWithStatus)
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ALTERNATE_ENTRY(RtlpBreakWithStatusInstruction)
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flushrs
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;;
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add t0 = zero, a0
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break.i BREAKPOINT_STOP
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br.ret.sptk.clr brp
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LEAF_EXIT(DbgBreakPointWithStatus)
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//++
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//
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// VOID
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// DbgUserBreakPoint()
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//
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// Routine Description:
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//
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// This function executes a breakpoint instruction. Useful for entering
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// the debug subsystem under program control. The kernel debug will ignore
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// this breakpoint since it will not find the instruction address in its
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// breakpoint table.
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//
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// Arguments:
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//
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// None.
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//
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// Return Value:
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//
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// None.
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//
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//--
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LEAF_ENTRY(DbgUserBreakPoint)
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flushrs
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;;
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break.i BREAKPOINT_STOP
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br.ret.sptk.clr brp
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LEAF_EXIT(DbgUserBreakPoint)
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//++
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//
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// ULONG
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// DebugPrompt(
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// IN PSTRING Output,
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// IN PSTRING Input
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// )
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//
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// Routine Description:
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//
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// This function executes a debug prompt breakpoint.
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//
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// Arguments:
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//
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// Output (a0) - Supplies a pointer to the output string descriptor.
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//
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// Input (a1) - Supplies a pointer to the input string descriptor.
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//
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// Return Value:
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//
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// The length of the input string is returned as the function value.
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//
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//--
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LEAF_ENTRY(DebugPrompt)
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flushrs
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add a0 = StrBuffer, a0
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add a1 = StrBuffer, a1
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;;
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//
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// Set the following 4 arguments into scratch registers t0 - t3;
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// they are passed to the KiDebugRoutine() via the context record.
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//
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// t0 - address of output string
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// t1 - length of output string
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// t2 - address of input string
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// t3 - maximumm length of input string
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//
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LDPTRINC(t0, a0, StrLength - StrBuffer)
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LDPTRINC(t2, a1, StrMaximumLength - StrBuffer)
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nop.i 0
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;;
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ld2.nta t1 = [a0]
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ld2.nta t3 = [a1]
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break.i BREAKPOINT_PROMPT
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nop.m 0
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nop.m 0
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br.ret.sptk.clr brp
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LEAF_EXIT(DebugPrompt)
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//++
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//
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// VOID
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// DebugLoadImageSymbols(
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// IN PSTRING ImagePathName,
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// IN PKD_SYMBOLS_INFO SymbolInfo
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// )
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//
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// Routine Description:
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//
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// This function calls the kernel debugger to load the symbol
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// table for the specified image.
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//
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// Arguments:
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//
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// ImagePathName - specifies the fully qualified path name of the image
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// file that has been loaded into an NT address space.
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//
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// SymbolInfo - information captured from header of image file.
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//
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// Return Value:
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//
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// None.
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//
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//--
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LEAF_ENTRY(DebugLoadImageSymbols)
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//
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// Arguments are passed to the KiDebugRoutine via the context record
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// in scratch registers t0 and t1.
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//
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flushrs
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add t0 = zero, a0
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add t1 = zero, a1
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;;
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nop.m 0
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break.i BREAKPOINT_LOAD_SYMBOLS
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br.ret.sptk.clr brp
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LEAF_EXIT(DebugLoadImageSymbols)
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//++
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//
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// VOID
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// DebugUnLoadImageSymbols(
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// IN PSTRING ImagePathName,
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// IN PKD_SYMBOLS_INFO SymbolInfo
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// )
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//
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// Routine Description:
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//
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// This function calls the kernel debugger to unload the symbol
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// table for the specified image.
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//
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// Arguments:
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//
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// ImagePathName - specifies the fully qualified path name of the image
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// file that has been unloaded from an NT address space.
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//
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// SymbolInfo - information captured from header of image file.
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//
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// Return Value:
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//
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// None.
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//
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//--
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LEAF_ENTRY(DebugUnLoadImageSymbols)
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//
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// Arguments are passed to the KiDebugRoutine via the context record
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// in scratch registers t0 and t1.
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//
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flushrs
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add t0 = zero, a0
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add t1 = zero, a1
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;;
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nop.m 0
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break.i BREAKPOINT_UNLOAD_SYMBOLS
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br.ret.sptk.clr brp
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LEAF_EXIT(DebugUnLoadImageSymbols)
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//++
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//
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// NTSTATUS
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// DebugPrint(
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// IN PSTRING Output,
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// IN ULONG ComponentId,
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// IN ULONG Level
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// )
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//
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// Routine Description:
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//
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// This function executes a debug print breakpoint.
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//
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// Arguments:
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//
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// Output (a0) - Supplies a pointer to the output string descriptor.
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//
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// ComponentId (a1) - Supplies the Id of the calling component.
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//
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// Level (a2) - Supplies the output importance level.
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//
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// Return Value:
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//
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// Status code. STATUS_SUCCESS if debug print happened.
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// STATUS_BREAKPOINT if user typed a Control-C during print.
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// STATUS_DEVICE_NOT_CONNECTED if kernel debugger not present.
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//
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//--
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LEAF_ENTRY(DebugPrint)
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flushrs
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add t5 = StrBuffer, a0
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;;
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LDPTRINC(t0, t5, StrLength-StrBuffer) // set address of output string
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;;
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ld2.nta t1 = [t5] // set length of output string
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add t2 = zero, a1 // set component id
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add t3 = zero, a2 // set importance level
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break.i BREAKPOINT_PRINT // execute a debug print breakpoint
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br.ret.sptk.clr brp
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LEAF_EXIT(DebugPrint)
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//++
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//
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// VOID
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// DebugCommandString(
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// IN PSTRING Name,
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// IN PSTRING Command
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// )
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//
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// Routine Description:
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//
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// This function requests that the kernel debugger execute
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// the given command string.
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//
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// Arguments:
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//
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// Name - Command name to identify the source of the
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// command to the kd user.
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//
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// Command - Command string.
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//
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// Return Value:
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//
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// None.
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//
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//--
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LEAF_ENTRY(DebugCommandString)
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//
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// Arguments are passed to the KiDebugRoutine via the context record
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// in scratch registers t0 and t1.
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//
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flushrs
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add t0 = zero, a0
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add t1 = zero, a1
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;;
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nop.m 0
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break.i BREAKPOINT_COMMAND_STRING
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br.ret.sptk.clr brp
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LEAF_EXIT(DebugCommandString)
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