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fix:solve the problem of stack backtrace failure for llvm. 

Change-Id: I0b0426e0e529cb6517d6a2712c6862ebbcea2239
This commit is contained in:
YOUR_NAME 2021-04-28 10:33:10 +08:00
parent 4f1e1619a5
commit 3b9ccc839e
1 changed files with 9 additions and 0 deletions
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9
arch/arm/arm/src/los_exc.c
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@ -669,12 +669,21 @@ VOID BackTraceSub(UINTPTR regFP)
while (IsValidFP(backFP, stackStart, stackEnd, &kvaddr) == TRUE) {
tmpFP = backFP;
#ifdef LOSCFG_COMPILER_CLANG_LLVM
backFP = *(UINTPTR *)(UINTPTR)kvaddr;
if (IsValidFP(tmpFP + POINTER_SIZE, stackStart, stackEnd, &kvaddr) == FALSE) {
PrintExcInfo("traceback backLR check failed, backLP: 0x%x\n", tmpFP + POINTER_SIZE);
return;
}
backLR = *(UINTPTR *)(UINTPTR)kvaddr;
#else
backLR = *(UINTPTR *)(UINTPTR)kvaddr;
if (IsValidFP(tmpFP - POINTER_SIZE, stackStart, stackEnd, &kvaddr) == FALSE) {
PrintExcInfo("traceback backFP check failed, backFP: 0x%x\n", tmpFP - POINTER_SIZE);
return;
}
backFP = *(UINTPTR *)(UINTPTR)kvaddr;
#endif
if (LOS_IsUserAddress((VADDR_T)backLR) == TRUE) {
region = LOS_RegionFind(OsCurrProcessGet()->vmSpace, (VADDR_T)backLR);
}