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-rw-r--r--pvr-source/services4/srvkm/common/mem_debug.c272
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diff --git a/pvr-source/services4/srvkm/common/mem_debug.c b/pvr-source/services4/srvkm/common/mem_debug.c
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+/*************************************************************************/ /*!
+@Title Memory debugging routines.
+@Copyright Copyright (c) Imagination Technologies Ltd. All Rights Reserved
+@Description Adds extra memory to the allocations to trace the memory bounds
+ and other runtime information.
+@License Dual MIT/GPLv2
+
+The contents of this file are subject to the MIT license as set out below.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+Alternatively, the contents of this file may be used under the terms of
+the GNU General Public License Version 2 ("GPL") in which case the provisions
+of GPL are applicable instead of those above.
+
+If you wish to allow use of your version of this file only under the terms of
+GPL, and not to allow others to use your version of this file under the terms
+of the MIT license, indicate your decision by deleting the provisions above
+and replace them with the notice and other provisions required by GPL as set
+out in the file called "GPL-COPYING" included in this distribution. If you do
+not delete the provisions above, a recipient may use your version of this file
+under the terms of either the MIT license or GPL.
+
+This License is also included in this distribution in the file called
+"MIT-COPYING".
+
+EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS
+PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
+BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/ /**************************************************************************/
+
+#ifndef MEM_DEBUG_C
+#define MEM_DEBUG_C
+
+#if defined(PVRSRV_DEBUG_OS_MEMORY)
+
+#include "img_types.h"
+#include "services_headers.h"
+
+#if defined (__cplusplus)
+extern "C"
+{
+#endif
+
+#define STOP_ON_ERROR 0
+
+ /*
+ Allocated Memory Layout:
+
+ --------- \
+ Status [OSMEM_DEBUG_INFO] |- TEST_BUFFER_PADDING_STATUS
+ --------- <
+ [0xBB]* [raw bytes] |- ui32Size
+ --------- <
+ [0xB2]* [raw bytes] |- TEST_BUFFER_PADDING_AFTER
+ --------- /
+ */
+
+ IMG_BOOL MemCheck(const IMG_PVOID pvAddr, const IMG_UINT8 ui8Pattern, IMG_SIZE_T uSize)
+ {
+ IMG_UINT8 *pui8Addr;
+ for (pui8Addr = (IMG_UINT8*)pvAddr; uSize > 0; uSize--, pui8Addr++)
+ {
+ if (*pui8Addr != ui8Pattern)
+ {
+ return IMG_FALSE;
+ }
+ }
+ return IMG_TRUE;
+ }
+
+ /*
+ This function expects the pointer to the user data, not the debug data.
+ */
+ IMG_VOID OSCheckMemDebug(IMG_PVOID pvCpuVAddr, IMG_SIZE_T uSize, const IMG_CHAR *pszFileName, const IMG_UINT32 uLine)
+ {
+ OSMEM_DEBUG_INFO const *psInfo = (OSMEM_DEBUG_INFO *)((IMG_UINT32)pvCpuVAddr - TEST_BUFFER_PADDING_STATUS);
+
+ /* invalid pointer */
+ if (pvCpuVAddr == IMG_NULL)
+ {
+ PVR_DPF((PVR_DBG_ERROR, "Pointer 0x%X : null pointer"
+ " - referenced %s:%d - allocated %s:%d",
+ pvCpuVAddr,
+ pszFileName, uLine,
+ psInfo->sFileName, psInfo->uLineNo));
+ while (STOP_ON_ERROR);
+ }
+
+ /* align */
+ if (((IMG_UINT32)pvCpuVAddr&3) != 0)
+ {
+ PVR_DPF((PVR_DBG_ERROR, "Pointer 0x%X : invalid alignment"
+ " - referenced %s:%d - allocated %s:%d",
+ pvCpuVAddr,
+ pszFileName, uLine,
+ psInfo->sFileName, psInfo->uLineNo));
+ while (STOP_ON_ERROR);
+ }
+
+ /*check guard region before*/
+ if (!MemCheck((IMG_PVOID)psInfo->sGuardRegionBefore, 0xB1, sizeof(psInfo->sGuardRegionBefore)))
+ {
+ PVR_DPF((PVR_DBG_ERROR, "Pointer 0x%X : guard region before overwritten"
+ " - referenced %s:%d - allocated %s:%d",
+ pvCpuVAddr,
+ pszFileName, uLine,
+ psInfo->sFileName, psInfo->uLineNo));
+ while (STOP_ON_ERROR);
+ }
+
+ /*check size*/
+ if (uSize != psInfo->uSize)
+ {
+ PVR_DPF((PVR_DBG_WARNING, "Pointer 0x%X : supplied size was different to stored size (0x%X != 0x%X)"
+ " - referenced %s:%d - allocated %s:%d",
+ pvCpuVAddr, uSize, psInfo->uSize,
+ pszFileName, uLine,
+ psInfo->sFileName, psInfo->uLineNo));
+ while (STOP_ON_ERROR);
+ }
+
+ /*check size parity*/
+ if ((0x01234567 ^ psInfo->uSizeParityCheck) != psInfo->uSize)
+ {
+ PVR_DPF((PVR_DBG_WARNING, "Pointer 0x%X : stored size parity error (0x%X != 0x%X)"
+ " - referenced %s:%d - allocated %s:%d",
+ pvCpuVAddr, psInfo->uSize, 0x01234567 ^ psInfo->uSizeParityCheck,
+ pszFileName, uLine,
+ psInfo->sFileName, psInfo->uLineNo));
+ while (STOP_ON_ERROR);
+ }
+ else
+ {
+ /*the stored size is ok, so we use it instead the supplied uSize*/
+ uSize = psInfo->uSize;
+ }
+
+ /*check padding after*/
+ if (uSize)
+ {
+ if (!MemCheck((IMG_VOID*)((IMG_UINT32)pvCpuVAddr + uSize), 0xB2, TEST_BUFFER_PADDING_AFTER))
+ {
+ PVR_DPF((PVR_DBG_ERROR, "Pointer 0x%X : guard region after overwritten"
+ " - referenced from %s:%d - allocated from %s:%d",
+ pvCpuVAddr,
+ pszFileName, uLine,
+ psInfo->sFileName, psInfo->uLineNo));
+ }
+ }
+
+ /* allocated... */
+ if (psInfo->eValid != isAllocated)
+ {
+ PVR_DPF((PVR_DBG_ERROR, "Pointer 0x%X : not allocated (freed? %d)"
+ " - referenced %s:%d - freed %s:%d",
+ pvCpuVAddr, psInfo->eValid == isFree,
+ pszFileName, uLine,
+ psInfo->sFileName, psInfo->uLineNo));
+ while (STOP_ON_ERROR);
+ }
+ }
+
+ IMG_VOID debug_strcpy(IMG_CHAR *pDest, const IMG_CHAR *pSrc)
+ {
+ IMG_SIZE_T i = 0;
+
+ for (; i < 128; i++) /*changed to 128 to match the filename array size*/
+ {
+ *pDest = *pSrc;
+ if (*pSrc == '\0') break;
+ pDest++;
+ pSrc++;
+ }
+ }
+
+ PVRSRV_ERROR OSAllocMem_Debug_Wrapper(IMG_UINT32 ui32Flags,
+ IMG_UINT32 ui32Size,
+ IMG_PVOID *ppvCpuVAddr,
+ IMG_HANDLE *phBlockAlloc,
+ IMG_CHAR *pszFilename,
+ IMG_UINT32 ui32Line)
+ {
+ OSMEM_DEBUG_INFO *psInfo;
+
+ PVRSRV_ERROR eError;
+
+ eError = OSAllocMem_Debug_Linux_Memory_Allocations(ui32Flags,
+ ui32Size + TEST_BUFFER_PADDING,
+ ppvCpuVAddr,
+ phBlockAlloc,
+ pszFilename,
+ ui32Line);
+
+ if (eError != PVRSRV_OK)
+ {
+ return eError;
+ }
+
+ OSMemSet((IMG_CHAR *)(*ppvCpuVAddr) + TEST_BUFFER_PADDING_STATUS, 0xBB, ui32Size);
+ OSMemSet((IMG_CHAR *)(*ppvCpuVAddr) + ui32Size + TEST_BUFFER_PADDING_STATUS, 0xB2, TEST_BUFFER_PADDING_AFTER);
+
+ /*fill the dbg info struct*/
+ psInfo = (OSMEM_DEBUG_INFO *)(*ppvCpuVAddr);
+
+ OSMemSet(psInfo->sGuardRegionBefore, 0xB1, sizeof(psInfo->sGuardRegionBefore));
+ debug_strcpy(psInfo->sFileName, pszFilename);
+ psInfo->uLineNo = ui32Line;
+ psInfo->eValid = isAllocated;
+ psInfo->uSize = ui32Size;
+ psInfo->uSizeParityCheck = 0x01234567 ^ ui32Size;
+
+ /*point to the user data section*/
+ *ppvCpuVAddr = (IMG_PVOID) ((IMG_UINT32)*ppvCpuVAddr)+TEST_BUFFER_PADDING_STATUS;
+
+#ifdef PVRSRV_LOG_MEMORY_ALLOCS
+ /*this is here to simplify the surounding logging macro, that is a expression
+ maybe the macro should be an expression */
+ PVR_TRACE(("Allocated pointer (after debug info): 0x%X from %s:%d", *ppvCpuVAddr, pszFilename, ui32Line));
+#endif
+
+ return PVRSRV_OK;
+ }
+
+ PVRSRV_ERROR OSFreeMem_Debug_Wrapper(IMG_UINT32 ui32Flags,
+ IMG_UINT32 ui32Size,
+ IMG_PVOID pvCpuVAddr,
+ IMG_HANDLE hBlockAlloc,
+ IMG_CHAR *pszFilename,
+ IMG_UINT32 ui32Line)
+ {
+ OSMEM_DEBUG_INFO *psInfo;
+
+ /*check dbginfo (arg pointing to user memory)*/
+ OSCheckMemDebug(pvCpuVAddr, ui32Size, pszFilename, ui32Line);
+
+ /*mark memory as freed*/
+ OSMemSet(pvCpuVAddr, 0xBF, ui32Size + TEST_BUFFER_PADDING_AFTER);
+
+ /*point to the starting address of the total allocated memory*/
+ psInfo = (OSMEM_DEBUG_INFO *)((IMG_UINT32) pvCpuVAddr - TEST_BUFFER_PADDING_STATUS);
+
+ /*update dbg info struct*/
+ psInfo->uSize = 0;
+ psInfo->uSizeParityCheck = 0;
+ psInfo->eValid = isFree;
+ psInfo->uLineNo = ui32Line;
+ debug_strcpy(psInfo->sFileName, pszFilename);
+
+ return OSFreeMem_Debug_Linux_Memory_Allocations(ui32Flags, ui32Size + TEST_BUFFER_PADDING, psInfo, hBlockAlloc, pszFilename, ui32Line);
+ }
+
+#if defined (__cplusplus)
+
+}
+#endif
+
+#endif /* PVRSRV_DEBUG_OS_MEMORY */
+
+#endif /* MEM_DEBUG_C */
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