//------------------------------------------------------------------------
// Compiler::unwindReserveFuncHelper: Reserve the unwind information from the VM for a
// given main function or funclet, for either the hot or the cold section.
//
// Arguments:
// func - The main function or funclet to reserve unwind info for.
// isHotCode - 'true' to reserve the hot section, 'false' to reserve the cold section.
//
void Compiler::unwindReserveFuncHelper(FuncInfoDsc* func, bool isHotCode)
{
DWORD unwindCodeBytes = 0;
if (isHotCode)
{
#ifdef UNIX_AMD64_ABI
if ((opts.eeFlags & CORJIT_FLG_CFI_UNWIND) != 0)
{
unwindCodeBytes = func->cfiCodes->size() * sizeof(CFI_CODE);
}
else
#endif // UNIX_AMD64_ABI
{
assert(func->unwindHeader.Version == 1); // Can't call this before unwindBegProlog
assert(func->unwindHeader.CountOfUnwindCodes == 0); // Only call this once per prolog
// Set the size of the prolog to be the last encoded action
if (func->unwindCodeSlot < sizeof(func->unwindCodes))
{
UNWIND_CODE * code = (UNWIND_CODE*)&func->unwindCodes[func->unwindCodeSlot];
func->unwindHeader.SizeOfProlog = code->CodeOffset;
}
else
{
func->unwindHeader.SizeOfProlog = 0;
}
func->unwindHeader.CountOfUnwindCodes = (BYTE)((sizeof(func->unwindCodes) - func->unwindCodeSlot) / sizeof(UNWIND_CODE));
// Prepend the unwindHeader onto the unwind codes
assert(func->unwindCodeSlot >= offsetof(UNWIND_INFO, UnwindCode));
func->unwindCodeSlot -= offsetof(UNWIND_INFO, UnwindCode);
UNWIND_INFO * pHeader = (UNWIND_INFO*)&func->unwindCodes[func->unwindCodeSlot];
memcpy(pHeader, &func->unwindHeader, offsetof(UNWIND_INFO, UnwindCode));
unwindCodeBytes = sizeof(func->unwindCodes) - func->unwindCodeSlot;
}
}
BOOL isFunclet = (func->funKind != FUNC_ROOT);
BOOL isColdCode = isHotCode ? FALSE : TRUE;
eeReserveUnwindInfo(isFunclet, isColdCode, unwindCodeBytes);
}
//------------------------------------------------------------------------
// Compiler::unwindReserveFuncHelper: Reserve the unwind information from the VM for a
// given main function or funclet, for either the hot or the cold section.
//
// Arguments:
// func - The main function or funclet to reserve unwind info for.
// isHotCode - 'true' to reserve the hot section, 'false' to reserve the cold section.
//
void Compiler::unwindReserveFuncHelper(FuncInfoDsc* func, bool isHotCode)
{
DWORD unwindCodeBytes;
if (isHotCode)
{
// Set the size of the prolog to be the last encoded action
if (func->unwindCodeSlot < sizeof(func->unwindCodes))
{
UNWIND_CODE * code = (UNWIND_CODE*)&func->unwindCodes[func->unwindCodeSlot];
func->unwindHeader.SizeOfProlog = code->CodeOffset;
}
else
{
func->unwindHeader.SizeOfProlog = 0;
}
func->unwindHeader.CountOfUnwindCodes = (BYTE)((sizeof(func->unwindCodes) - func->unwindCodeSlot) / sizeof(UNWIND_CODE));
// Prepend the unwindHeader onto the unwind codes
assert(func->unwindCodeSlot >= offsetof(UNWIND_INFO, UnwindCode));
func->unwindCodeSlot -= offsetof(UNWIND_INFO, UnwindCode);
UNWIND_INFO * pHeader = (UNWIND_INFO*)&func->unwindCodes[func->unwindCodeSlot];
memcpy(pHeader, &func->unwindHeader, offsetof(UNWIND_INFO, UnwindCode));
unwindCodeBytes = sizeof(func->unwindCodes) - func->unwindCodeSlot;
}
else
{
unwindCodeBytes = 0;
}
BOOL isFunclet = (func->funKind != FUNC_ROOT);
BOOL isColdCode = isHotCode ? FALSE : TRUE;
eeReserveUnwindInfo(isFunclet, isColdCode, unwindCodeBytes);
}
