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/*

 * Computes the pointer to the kstack_wbuf_ptr structure of the current CPU.

 *

 * Parameters:

 *  tmpreg1     global register to be used for scratching purposes

 *  result      register where the resulting pointer will be saved

 */

.macro get_kstack_wbuf_ptr tmpreg1, result

    ! load CPUID to tmpreg1

    or %g0, SCRATCHPAD_CPUID, \tmpreg1

    ldxa [\tmpreg1] ASI_SCRATCHPAD, \tmpreg1

    ! compute offset within the array of kstack_wbuf_ptr structures (each

    ! such structure is 16 bytes long)

    mulx \tmpreg1, KSTACK_WBUF_PTR_SIZE, \tmpreg1

    ! compute the pointer to the structure for the current CPU

    sethi %hi(kstack_wbuf_ptrs), \result

    or \result, %lo(kstack_wbuf_ptrs), \result

    add \result, \tmpreg1, \result

.endm