1  /*
       2   * Copyright (c) 2021 The strace developers.
       3   * All rights reserved.
       4   *
       5   * SPDX-License-Identifier: LGPL-2.1-or-later
       6   */
       7  
       8  #ifdef MPERS_IS_m32
       9  # define TRACEE_KLONGSIZE 4
      10  #else
      11  # define TRACEE_KLONGSIZE SIZEOF_KERNEL_LONG_T
      12  #endif
      13  
      14  static void
      15  arch_decode_prstatus_regset(struct tcb *const tcp,
      16  			    const kernel_ulong_t addr,
      17  			    const kernel_ulong_t size)
      18  {
      19  	struct_prstatus_regset regs;
      20  	const size_t fetch_size = MIN(sizeof(regs), size);
      21  
      22  	if (!size || size & (TRACEE_KLONGSIZE - 1)) {
      23  		printaddr(addr);
      24  	} else if (!umoven_or_printaddr(tcp, addr, fetch_size, &regs)) {
      25  		tprint_struct_begin();
      26  		PRINT_FIELD_ARRAY_UPTO(regs, gpr, fetch_size / TRACEE_KLONGSIZE,
      27  				       tcp, print_xint_array_member);
      28  		if (fetch_size > offsetof(struct_prstatus_regset, nip)) {
      29  			tprint_struct_next();
      30  			PRINT_FIELD_X(regs, nip);
      31  		}
      32  		if (fetch_size > offsetof(struct_prstatus_regset, msr)) {
      33  			tprint_struct_next();
      34  			PRINT_FIELD_X(regs, msr);
      35  		}
      36  		if (fetch_size > offsetof(struct_prstatus_regset, orig_gpr3)) {
      37  			tprint_struct_next();
      38  			PRINT_FIELD_X(regs, orig_gpr3);
      39  		}
      40  		if (fetch_size > offsetof(struct_prstatus_regset, ctr)) {
      41  			tprint_struct_next();
      42  			PRINT_FIELD_X(regs, ctr);
      43  		}
      44  		if (fetch_size > offsetof(struct_prstatus_regset, link)) {
      45  			tprint_struct_next();
      46  			PRINT_FIELD_X(regs, link);
      47  		}
      48  		if (fetch_size > offsetof(struct_prstatus_regset, xer)) {
      49  			tprint_struct_next();
      50  			PRINT_FIELD_X(regs, xer);
      51  		}
      52  		if (fetch_size > offsetof(struct_prstatus_regset, ccr)) {
      53  			tprint_struct_next();
      54  			PRINT_FIELD_X(regs, ccr);
      55  		}
      56  #if TRACEE_KLONGSIZE == 4
      57  		if (fetch_size > offsetof(struct_prstatus_regset, mq)) {
      58  			tprint_struct_next();
      59  			PRINT_FIELD_X(regs, mq);
      60  		}
      61  #else
      62  		if (fetch_size > offsetof(struct_prstatus_regset, softe)) {
      63  			tprint_struct_next();
      64  			PRINT_FIELD_X(regs, softe);
      65  		}
      66  #endif
      67  		if (fetch_size > offsetof(struct_prstatus_regset, trap)) {
      68  			tprint_struct_next();
      69  			PRINT_FIELD_X(regs, trap);
      70  		}
      71  		if (fetch_size > offsetof(struct_prstatus_regset, dar)) {
      72  			tprint_struct_next();
      73  			PRINT_FIELD_X(regs, dar);
      74  		}
      75  		if (fetch_size > offsetof(struct_prstatus_regset, dsisr)) {
      76  			tprint_struct_next();
      77  			PRINT_FIELD_X(regs, dsisr);
      78  		}
      79  		if (fetch_size > offsetof(struct_prstatus_regset, result)) {
      80  			tprint_struct_next();
      81  			PRINT_FIELD_X(regs, result);
      82  		}
      83  		if (size > sizeof(regs)) {
      84  			tprint_struct_next();
      85  			tprint_more_data_follows();
      86  		}
      87  		tprint_struct_end();
      88  	}
      89  }
      90  
      91  #undef TRACEE_KLONGSIZE