mtsp
#define REST_SP(r, where) LDREG where, %r1 ! mtsp %r1, r
mtsp %r0, %sr4
mtsp %r0, %sr5
mtsp %r0, %sr6
mtsp(context.space_id, SR_USER);
mtsp(mm->context.space_id, SR_TEMP1);
mtsp(space, SR_USER);
mtsp(sid, SR_TEMP1);
mtsp(get_kernel_space(), SR_TEMP1);
mtsp(get_user_space(), SR_TEMP2);
mtsp(get_user_space(), SR_TEMP1);
mtsp(get_kernel_space(), SR_TEMP2);
mtsp(get_kernel_space(), SR_TEMP1);
mtsp(get_kernel_space(), SR_TEMP2);