Write HCL code for the signals M_bubble and W_stall in the PIPE implementation. The latter signal requires modifying the exception condition listed in Figure 4.64.

Figure 4.64

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Condition Processing ret Load/use hazard Mispredicted branch Exception Trigger IRET € {D_icode, E_icode, M_icode} E_icode = {IMRMOVQ, IPOPQ) && E_dstM € (d_srcA, d_srcB} E_icode = 1JXX && !e_Cnd m_stat € (SADR, SINS, SHLT) | | W_stat € (SADR, SINS, SHLT}