[vgupta-arc:for-next 3/4] arch/arc/kernel/disasm.c:494:23: error: 'struct pt_regs' has no member named 'gp'; did you mean 'fp'?

From: kernel test robot <lkp@intel.com>
To: Sergey Matyukevich <sergey.matyukevich@synopsys.com>
Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org,
	linux-snps-arc@lists.infradead.org,
	Vineet Gupta <vgupta@kernel.org>
Subject: [vgupta-arc:for-next 3/4] arch/arc/kernel/disasm.c:494:23: error: 'struct pt_regs' has no member named 'gp'; did you mean 'fp'?
Date: Tue, 26 Apr 2022 08:41:51 +0800	[thread overview]
Message-ID: <202204260826.d9fdltJm-lkp@intel.com> (raw)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc.git for-next
head:   e88856183749fd59759cd4c617f9ecec8280d8fa
commit: b08a66fb680018b621fd8be641c537c625132ab3 [3/4] ARC: disasm: handle ARCv2 case in kprobe get/set functions
config: arc-randconfig-r012-20220425 (https://download.01.org/0day-ci/archive/20220426/202204260826.d9fdltJm-lkp@intel.com/config)
compiler: arceb-elf-gcc (GCC) 11.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc.git/commit/?id=b08a66fb680018b621fd8be641c537c625132ab3
        git remote add vgupta-arc https://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc.git
        git fetch --no-tags vgupta-arc for-next
        git checkout b08a66fb680018b621fd8be641c537c625132ab3
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arc SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   arch/arc/kernel/disasm.c: In function 'disasm_instr':
   arch/arc/kernel/disasm.c:28:19: warning: variable 'ins_ptr' set but not used [-Wunused-but-set-variable]
      28 |         uint16_t *ins_ptr;
         |                   ^~~~~~~
   arch/arc/kernel/disasm.c: In function 'set_reg':
>> arch/arc/kernel/disasm.c:494:23: error: 'struct pt_regs' has no member named 'gp'; did you mean 'fp'?
     494 |                 regs->gp = val;
         |                       ^~
         |                       fp

vim +494 arch/arc/kernel/disasm.c

   475	
   476	void __kprobes set_reg(int reg, long val, struct pt_regs *regs,
   477			struct callee_regs *cregs)
   478	{
   479		long *p;
   480	
   481	#if defined(CONFIG_ISA_ARCOMPACT)
   482		switch (reg) {
   483		case 0 ... 12:
   484			p = &regs->r0;
   485			p[-reg] = val;
   486			break;
   487		case 13 ... 25:
   488			if (cregs) {
   489				p = &cregs->r13;
   490				p[13 - reg] = val;
   491			}
   492			break;
   493		case 26:
 > 494			regs->gp = val;
   495			break;
   496		case 27:
   497			regs->fp = val;
   498			break;
   499		case 28:
   500			regs->sp = val;
   501			break;
   502		case 31:
   503			regs->blink = val;
   504			break;
   505		default:
   506			break;
   507		}
   508	#else /* CONFIG_ISA_ARCV2 */
   509		switch (reg) {
   510		case 0 ... 11:
   511			p = &regs->r0;
   512			p[reg] = val;
   513			break;
   514		case 12:
   515			regs->r12 = val;
   516			break;
   517		case 13 ... 25:
   518			if (cregs) {
   519				p = &cregs->r13;
   520				p[13 - reg] = val;
   521			}
   522			break;
   523		case 26:
   524			regs->r26 = val;
   525			break;
   526		case 27:
   527			regs->fp = val;
   528			break;
   529		case 28:
   530			regs->sp = val;
   531			break;
   532		case 30:
   533			regs->r30 = val;
   534			break;
   535		case 31:
   536			regs->blink = val;
   537			break;
   538	#ifdef CONFIG_ARC_HAS_ACCL_REGS
   539		case 58:
   540			regs->r58 = val;
   541			break;
   542		case 59:
   543			regs->r59 = val;
   544			break;
   545	#endif
   546		default:
   547			break;
   548		}
   549	#endif
   550	}
   551	

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