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   1 /* a.out coredump register dumper
   2  *
   3  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public Licence
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the Licence, or (at your option) any later version.
  10  */
  11
  12 #ifndef _ASM_A_OUT_CORE_H
  13 #define _ASM_A_OUT_CORE_H
  14
  15 #ifdef __KERNEL__
  16
  17 #include <linux/user.h>
  18
  19 /*
  20  * Fill in the user structure for an ECOFF core dump.
  21  */
  22 static inline void aout_dump_thread(struct pt_regs *pt, struct user *dump)
  23 {
  24         /* switch stack follows right below pt_regs: */
  25         struct switch_stack * sw = ((struct switch_stack *) pt) - 1;
  26
  27         dump->magic = CMAGIC;
  28         dump->start_code  = current->mm->start_code;
  29         dump->start_data  = current->mm->start_data;
  30         dump->start_stack = rdusp() & ~(PAGE_SIZE - 1);
  31         dump->u_tsize = ((current->mm->end_code - dump->start_code)
  32                          >> PAGE_SHIFT);
  33         dump->u_dsize = ((current->mm->brk + PAGE_SIZE-1 - dump->start_data)
  34                          >> PAGE_SHIFT);
  35         dump->u_ssize = (current->mm->start_stack - dump->start_stack
  36                          + PAGE_SIZE-1) >> PAGE_SHIFT;
  37
  38         /*
  39          * We store the registers in an order/format that is
  40          * compatible with DEC Unix/OSF/1 as this makes life easier
  41          * for gdb.
  42          */
  43         dump->regs[EF_V0]  = pt->r0;
  44         dump->regs[EF_T0]  = pt->r1;
  45         dump->regs[EF_T1]  = pt->r2;
  46         dump->regs[EF_T2]  = pt->r3;
  47         dump->regs[EF_T3]  = pt->r4;
  48         dump->regs[EF_T4]  = pt->r5;
  49         dump->regs[EF_T5]  = pt->r6;
  50         dump->regs[EF_T6]  = pt->r7;
  51         dump->regs[EF_T7]  = pt->r8;
  52         dump->regs[EF_S0]  = sw->r9;
  53         dump->regs[EF_S1]  = sw->r10;
  54         dump->regs[EF_S2]  = sw->r11;
  55         dump->regs[EF_S3]  = sw->r12;
  56         dump->regs[EF_S4]  = sw->r13;
  57         dump->regs[EF_S5]  = sw->r14;
  58         dump->regs[EF_S6]  = sw->r15;
  59         dump->regs[EF_A3]  = pt->r19;
  60         dump->regs[EF_A4]  = pt->r20;
  61         dump->regs[EF_A5]  = pt->r21;
  62         dump->regs[EF_T8]  = pt->r22;
  63         dump->regs[EF_T9]  = pt->r23;
  64         dump->regs[EF_T10] = pt->r24;
  65         dump->regs[EF_T11] = pt->r25;
  66         dump->regs[EF_RA]  = pt->r26;
  67         dump->regs[EF_T12] = pt->r27;
  68         dump->regs[EF_AT]  = pt->r28;
  69         dump->regs[EF_SP]  = rdusp();
  70         dump->regs[EF_PS]  = pt->ps;
  71         dump->regs[EF_PC]  = pt->pc;
  72         dump->regs[EF_GP]  = pt->gp;
  73         dump->regs[EF_A0]  = pt->r16;
  74         dump->regs[EF_A1]  = pt->r17;
  75         dump->regs[EF_A2]  = pt->r18;
  76         memcpy((char *)dump->regs + EF_SIZE, sw->fp, 32 * 8);
  77 }
  78
  79 #endif /* __KERNEL__ */
  80 #endif /* _ASM_A_OUT_CORE_H */