IPRT: Added single stack frame unwind function to RTDbgMod and RTLdr, copying over the PoC from DBGFRStack.cpp. bugref:3897

git-svn-id: https://www.virtualbox.org/svn/vbox/trunk@73494 cfe28804-0f27-0410-a406-dd0f0b0b656f

1 files changed, 21 insertions, 0 deletions

diff --git a/src/VBox/Runtime/common/ldr/ldrEx.cpp b/src/VBox/Runtime/common/ldr/ldrEx.cpp
index 969702a0a74..e52d843a609 100644
--- a/src/VBox/Runtime/common/ldr/ldrEx.cpp
+++ b/src/VBox/Runtime/common/ldr/ldrEx.cpp
@@ -33,6 +33,7 @@
 #include "internal/iprt.h"
 
 #include <iprt/assert.h>
+#include <iprt/dbg.h>
 #include <iprt/err.h>
 #include <iprt/log.h>
 #include <iprt/md5.h>
@@ -707,6 +708,26 @@ RTDECL(int) RTLdrHashImage(RTLDRMOD hLdrMod, RTDIGESTTYPE enmDigest, char *pszDi
 RT_EXPORT_SYMBOL(RTLdrHashImage);
 
 
+RTDECL(int) RTLdrUnwindFrame(RTLDRMOD hLdrMod, void const *pvBits, uint32_t iSeg, RTLDRADDR off, PRTDBGUNWINDSTATE pState)
+{
+    /*
+     * Validate.
+     */
+    AssertMsgReturn(rtldrIsValid(hLdrMod), ("hLdrMod=%p\n", hLdrMod), VERR_INVALID_HANDLE);
+    PRTLDRMODINTERNAL pMod = (PRTLDRMODINTERNAL)hLdrMod;
+    AssertPtr(pState);
+    AssertReturn(pState->u32Magic == RTDBGUNWINDSTATE_MAGIC, VERR_INVALID_MAGIC);
+
+    /*
+     * Pass on the work.
+     */
+    if (pMod->pOps->pfnUnwindFrame)
+        return pMod->pOps->pfnUnwindFrame(pMod, pvBits, iSeg, off, pState);
+    return VERR_DBG_NO_UNWIND_INFO;
+}
+RT_EXPORT_SYMBOL(RTLdrUnwindFrame);
+
+
 /**
  * Internal method used by the IPRT debug bits.
  *