tree: https://github.com/0day-ci/linux/commits/UPDATE-20200516-195607/Jordan-Ni... head: dae797aa7e7f8d885f42df4c29129e8135bc7b1c commit: b8a5a93bf8e358960a60e04435d411a867b5a1ea [29/30] powerpc sstep: Add support for prefixed load/stores config: powerpc-defconfig (attached as .config) compiler: powerpc64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout b8a5a93bf8e358960a60e04435d411a867b5a1ea # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): arch/powerpc/lib/sstep.c: In function 'analyse_instr': 2696 | ra = (suffix >> 16) & 0x1f; | ^~~~~~ arch/powerpc/lib/sstep.c:2696:9: note: each undeclared identifier is reported only once for each function it appears in vim +/suffix +2696 arch/powerpc/lib/sstep.c 2677 2678 #ifdef __powerpc64__ 2679 case 62: /* std[u] */ 2680 op->ea = dsform_ea(word, regs); 2681 switch (word & 3) { 2682 case 0: /* std */ 2683 op->type = MKOP(STORE, 0, 8); 2684 break; 2685 case 1: /* stdu */ 2686 op->type = MKOP(STORE, UPDATE, 8); 2687 break; 2688 case 2: /* stq */ 2689 if (!(rd & 1)) 2690 op->type = MKOP(STORE, 0, 16); 2691 break; 2692 } 2693 break; 2694 case 1: /* Prefixed instructions */ 2695 prefix_r = word & (1ul << 20); 2697 op->update_reg = ra; 2698 rd = (suffix >> 21) & 0x1f; 2699 op->reg = rd; 2700 op->val = regs->gpr[rd]; 2701 2702 suffixopcode = suffix >> 26; 2703 prefixtype = (word >> 24) & 0x3; 2704 switch (prefixtype) { 2705 case 0: /* Type 00 Eight-Byte Load/Store */ 2706 if (prefix_r && ra) 2707 break; 2708 op->ea = mlsd_8lsd_ea(word, suffix, regs); 2709 switch (suffixopcode) { 2710 case 41: /* plwa */ 2711 op->type = MKOP(LOAD, PREFIXED | SIGNEXT, 4); 2712 break; 2713 case 42: /* plxsd */ 2714 op->reg = rd + 32; 2715 op->type = MKOP(LOAD_VSX, PREFIXED, 8); 2716 op->element_size = 8; 2717 op->vsx_flags = VSX_CHECK_VEC; 2718 break; 2719 case 43: /* plxssp */ 2720 op->reg = rd + 32; 2721 op->type = MKOP(LOAD_VSX, PREFIXED, 4); 2722 op->element_size = 8; 2723 op->vsx_flags = VSX_FPCONV | VSX_CHECK_VEC; 2724 break; 2725 case 46: /* pstxsd */ 2726 op->reg = rd + 32; 2727 op->type = MKOP(STORE_VSX, PREFIXED, 8); 2728 op->element_size = 8; 2729 op->vsx_flags = VSX_CHECK_VEC; 2730 break; 2731 case 47: /* pstxssp */ 2732 op->reg = rd + 32; 2733 op->type = MKOP(STORE_VSX, PREFIXED, 4); 2734 op->element_size = 8; 2735 op->vsx_flags = VSX_FPCONV | VSX_CHECK_VEC; 2736 break; 2737 case 51: /* plxv1 */ 2738 op->reg += 32; 2739 fallthrough; 2740 case 50: /* plxv0 */ 2741 op->type = MKOP(LOAD_VSX, PREFIXED, 16); 2742 op->element_size = 16; 2743 op->vsx_flags = VSX_CHECK_VEC; 2744 break; 2745 case 55: /* pstxv1 */ 2746 op->reg = rd + 32; 2747 fallthrough; 2748 case 54: /* pstxv0 */ 2749 op->type = MKOP(STORE_VSX, PREFIXED, 16); 2750 op->element_size = 16; 2751 op->vsx_flags = VSX_CHECK_VEC; 2752 break; 2753 case 56: /* plq */ 2754 op->type = MKOP(LOAD, PREFIXED, 16); 2755 break; 2756 case 57: /* pld */ 2757 op->type = MKOP(LOAD, PREFIXED, 8); 2758 break; 2759 case 60: /* stq */ 2760 op->type = MKOP(STORE, PREFIXED, 16); 2761 break; 2762 case 61: /* pstd */ 2763 op->type = MKOP(STORE, PREFIXED, 8); 2764 break; 2765 } 2766 break; 2767 case 1: /* Type 01 Eight-Byte Register-to-Register */ 2768 break; 2769 case 2: /* Type 10 Modified Load/Store */ 2770 if (prefix_r && ra) 2771 break; 2772 op->ea = mlsd_8lsd_ea(word, suffix, regs); 2773 switch (suffixopcode) { 2774 case 32: /* plwz */ 2775 op->type = MKOP(LOAD, PREFIXED, 4); 2776 break; 2777 case 34: /* plbz */ 2778 op->type = MKOP(LOAD, PREFIXED, 1); 2779 break; 2780 case 36: /* pstw */ 2781 op->type = MKOP(STORE, PREFIXED, 4); 2782 break; 2783 case 38: /* pstb */ 2784 op->type = MKOP(STORE, PREFIXED, 1); 2785 break; 2786 case 40: /* plhz */ 2787 op->type = MKOP(LOAD, PREFIXED, 2); 2788 break; 2789 case 42: /* plha */ 2790 op->type = MKOP(LOAD, PREFIXED | SIGNEXT, 2); 2791 break; 2792 case 44: /* psth */ 2793 op->type = MKOP(STORE, PREFIXED, 2); 2794 break; 2795 case 48: /* plfs */ 2796 op->type = MKOP(LOAD_FP, PREFIXED | FPCONV, 4); 2797 break; 2798 case 50: /* plfd */ 2799 op->type = MKOP(LOAD_FP, PREFIXED, 8); 2800 break; 2801 case 52: /* pstfs */ 2802 op->type = MKOP(STORE_FP, PREFIXED | FPCONV, 4); 2803 break; 2804 case 54: /* pstfd */ 2805 op->type = MKOP(STORE_FP, PREFIXED, 8); 2806 break; 2807 } 2808 break; 2809 case 3: /* Type 11 Modified Register-to-Register */ 2810 break; 2811 } 2812 #endif /* __powerpc64__ */ 2813 2814 } 2815 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org