1  /*
       2   * Copyright (c) 2015-2021 The strace developers.
       3   * All rights reserved.
       4   *
       5   * SPDX-License-Identifier: LGPL-2.1-or-later
       6   */
       7  
       8  #ifndef SIZEOF_STRUCT_SPARC_STACKF
       9  # define SIZEOF_STRUCT_SPARC_STACKF	sizeof(struct sparc_stackf)
      10  #endif
      11  #ifndef SIZEOF_STRUCT_PT_REGS
      12  # define SIZEOF_STRUCT_PT_REGS		sizeof(struct pt_regs)
      13  #endif
      14  #ifndef PERSONALITY_WORDSIZE
      15  # define PERSONALITY_WORDSIZE		PERSONALITY0_WORDSIZE
      16  #endif
      17  
      18  static void
      19  arch_sigreturn(struct tcb *tcp)
      20  {
      21  	kernel_ulong_t addr;
      22  	if (!get_stack_pointer(tcp, &addr))
      23  		return;
      24  	addr += SIZEOF_STRUCT_SPARC_STACKF + SIZEOF_STRUCT_PT_REGS;
      25  	struct {
      26  		unsigned int mask;
      27  		char fpu_save[PERSONALITY_WORDSIZE];
      28  		char insns[PERSONALITY_WORDSIZE * 2] ATTRIBUTE_ALIGNED(8);
      29  		unsigned int extramask[NSIG_BYTES / sizeof(int) - 1];
      30  	} frame;
      31  
      32  	if (!umove_or_printaddr(tcp, addr, &frame)) {
      33  		unsigned int mask[NSIG_BYTES / sizeof(int)];
      34  
      35  		mask[0] = frame.mask;
      36  		memcpy(mask + 1, frame.extramask, sizeof(frame.extramask));
      37  		tprintsigmask_addr(mask);
      38  	}
      39  }
      40  
      41  #undef PERSONALITY_WORDSIZE
      42  #undef SIZEOF_STRUCT_PT_REGS
      43  #undef SIZEOF_STRUCT_SPARC_STACKF