getcalr.c File Reference

#include "ntrtlp.h"

Go to the source code of this file.

Functions
VOID	RtlGetCallersAddress (OUT PVOID *CallersPc, OUT PVOID *CallersCallersPc)
USHORT	RtlCaptureStackBackTrace (IN ULONG FramesToSkip, IN ULONG FramesToCapture, OUT PVOID *BackTrace, OUT PULONG BackTraceHash)

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Function Documentation

USHORT RtlCaptureStackBackTrace (  IN ULONG  FramesToSkip, IN ULONG  FramesToCapture, OUT PVOID *  BackTrace, OUT PULONG  BackTraceHash )

Definition at line 171 of file mips/getcalr.c. { return 0; }

VOID RtlGetCallersAddress (  OUT PVOID *  CallersPc, OUT PVOID *  CallersCallersPc )

Definition at line 35 of file mips/getcalr.c. References NULL, RtlLookupFunctionEntry(), RtlpGetStackLimits(), and RtlVirtualUnwind(). : This routine returns the address of the routine that called the routine that called this routine, and the routine that called the routine that called this routine. For example, if A called B called C which called this routine, the return addresses in A and B would be returned. Arguments: CallersPc - Supplies a pointer to a variable that receives the address of the caller of the caller of this routine (B). CallersCallersPc - Supplies a pointer to a variable that receives the address of the caller of the caller of the caller of this routine (A). Return Value: None. Note: If either of the calling stack frames exceeds the limits of the stack, they are set to NULL. --*/ { CONTEXT ContextRecord; ULONG EstablisherFrame; PRUNTIME_FUNCTION FunctionEntry; BOOLEAN InFunction; ULONG NextPc; ULONG HighLimit, LowLimit; // // Assume the function table entries for the various routines cannot be // found or there are not four procedure activation records on the stack. // *CallersPc = NULL; *CallersCallersPc = NULL; // // Capture the current context. // RtlCaptureContext(&ContextRecord); NextPc = (ULONG)ContextRecord.XIntRa; // // Get the high and low limits of the current thread's stack. // RtlpGetStackLimits(&LowLimit, &HighLimit); // // Attempt to unwind to the caller of this routine (C). // FunctionEntry = RtlLookupFunctionEntry(NextPc); if (FunctionEntry != NULL) { // // A function entry was found for this routine. Virtually unwind // to the caller of this routine (C). // NextPc = RtlVirtualUnwind(NextPc | 1, FunctionEntry, &ContextRecord, &InFunction, &EstablisherFrame, NULL); // // Attempt to unwind to the caller of the caller of this routine (B). // FunctionEntry = RtlLookupFunctionEntry(NextPc); if ((FunctionEntry != NULL) && ((ULONG)ContextRecord.XIntSp < HighLimit)) { // // A function table entry was found for the caller of the caller // of this routine (B). Virtually unwind to the caller of the // caller of this routine (B). // NextPc = RtlVirtualUnwind(NextPc | 1, FunctionEntry, &ContextRecord, &InFunction, &EstablisherFrame, NULL); *CallersPc = (PVOID)NextPc; // // Attempt to unwind to the caller of the caller of the caller // of the caller of this routine (A). // FunctionEntry = RtlLookupFunctionEntry(NextPc); if ((FunctionEntry != NULL) && ((ULONG)ContextRecord.XIntSp < HighLimit)) { // // A function table entry was found for the caller of the // caller of the caller of this routine (A). Virtually unwind // to the caller of the caller of the caller of this routine // (A). // NextPc = RtlVirtualUnwind(NextPc | 1, FunctionEntry, &ContextRecord, &InFunction, &EstablisherFrame, NULL); *CallersCallersPc = (PVOID)NextPc; } } } return; }

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