server/context_sparc.c

   1 /*
   2  * Sparc register context support
   3  *
   4  * Copyright (C) 2000 Ulrich Weigand
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #ifdef __sparc__
  24
  25 #include <assert.h>
  26 #include <errno.h>
  27 #include <sys/types.h>
  28 #ifdef HAVE_SYS_REG_H
  29 # include <sys/reg.h>
  30 #endif
  31 #include <stdarg.h>
  32 #include <unistd.h>
  33 #ifdef HAVE_SYS_PTRACE_H
  34 # include <sys/ptrace.h>
  35 #endif
  36
  37 #include "windef.h"
  38
  39 #include "file.h"
  40 #include "thread.h"
  41 #include "request.h"
  42
  43 #if 0  /* no longer used */
  44
  45 #if defined(__sun) || defined(__sun__)
  46
  47 /* retrieve a thread context */
  48 static void get_thread_context_ptrace( struct thread *thread, unsigned int flags, CONTEXT *context )
  49 {
  50     int pid = get_ptrace_pid(thread);
  51     if (flags & CONTEXT_FULL)
  52     {
  53         struct regs regs;
  54         if (ptrace( PTRACE_GETREGS, pid, 0, (int) &regs ) == -1) goto error;
  55         if (flags & CONTEXT_INTEGER)
  56         {
  57             context->g0 = 0;
  58             context->g1 = regs.r_g1;
  59             context->g2 = regs.r_g2;
  60             context->g3 = regs.r_g3;
  61             context->g4 = regs.r_g4;
  62             context->g5 = regs.r_g5;
  63             context->g6 = regs.r_g6;
  64             context->g7 = regs.r_g7;
  65
  66             context->o0 = regs.r_o0;
  67             context->o1 = regs.r_o1;
  68             context->o2 = regs.r_o2;
  69             context->o3 = regs.r_o3;
  70             context->o4 = regs.r_o4;
  71             context->o5 = regs.r_o5;
  72             context->o6 = regs.r_o6;
  73             context->o7 = regs.r_o7;
  74
  75             /* FIXME: local and in registers */
  76         }
  77         if (flags & CONTEXT_CONTROL)
  78         {
  79             context->psr = regs.r_psr;
  80             context->pc  = regs.r_pc;
  81             context->npc = regs.r_npc;
  82             context->y   = regs.r_y;
  83             context->wim = 0;  /* FIXME */
  84             context->tbr = 0;  /* FIXME */
  85         }
  86         context |= flags & (CONTEXT_CONTROL|CONTEXT_INTEGER);
  87     }
  88     if (flags & CONTEXT_FLOATING_POINT)
  89     {
  90         /* FIXME */
  91     }
  92     return;
  93  error:
  94     file_set_error();
  95 }
  96
  97
  98 /* set a thread context */
  99 static void set_thread_context_ptrace( struct thread *thread, unsigned int flags, const CONTEXT *context )
 100 {
 101     /* FIXME */
 102 }
 103
 104 #else  /* __sun__ */
 105 #error You must implement get/set_thread_context_ptrace for your platform
 106 #endif  /* __sun__ */
 107
 108 #endif /* 0 */
 109
 110 /* copy a context structure according to the flags */
 111 void copy_context( CONTEXT *to, const CONTEXT *from, unsigned int flags )
 112 {
 113     flags &= ~CONTEXT_SPARC;  /* get rid of CPU id */
 114     if (flags & CONTEXT_CONTROL)
 115     {
 116         to->psr    = from->psr;
 117         to->pc     = from->pc;
 118         to->npc    = from->npc;
 119         to->y      = from->y;
 120         to->wim    = from->wim;
 121         to->tbr    = from->tbr;
 122     }
 123     if (flags & CONTEXT_INTEGER)
 124     {
 125         to->g0 = from->g0;
 126         to->g1 = from->g1;
 127         to->g2 = from->g2;
 128         to->g3 = from->g3;
 129         to->g4 = from->g4;
 130         to->g5 = from->g5;
 131         to->g6 = from->g6;
 132         to->g7 = from->g7;
 133         to->o0 = from->o0;
 134         to->o1 = from->o1;
 135         to->o2 = from->o2;
 136         to->o3 = from->o3;
 137         to->o4 = from->o4;
 138         to->o5 = from->o5;
 139         to->o6 = from->o6;
 140         to->o7 = from->o7;
 141         to->l0 = from->l0;
 142         to->l1 = from->l1;
 143         to->l2 = from->l2;
 144         to->l3 = from->l3;
 145         to->l4 = from->l4;
 146         to->l5 = from->l5;
 147         to->l6 = from->l6;
 148         to->l7 = from->l7;
 149         to->i0 = from->i0;
 150         to->i1 = from->i1;
 151         to->i2 = from->i2;
 152         to->i3 = from->i3;
 153         to->i4 = from->i4;
 154         to->i5 = from->i5;
 155         to->i6 = from->i6;
 156         to->i7 = from->i7;
 157     }
 158     if (flags & CONTEXT_FLOATING_POINT)
 159     {
 160         /* FIXME */
 161     }
 162     context |= flags & (CONTEXT_CONTROL|CONTEXT_INTEGER);
 163 }
 164
 165 /* retrieve the current instruction pointer of a context */
 166 client_ptr_t get_context_ip( const CONTEXT *context )
 167 {
 168     return context->pc;
 169 }
 170
 171 /* return the context flag that contains the CPU id */
 172 unsigned int get_context_cpu_flag(void)
 173 {
 174     return CONTEXT_SPARC;
 175 }
 176
 177 /* return only the context flags that correspond to system regs */
 178 /* (system regs are the ones we can't access on the client side) */
 179 unsigned int get_context_system_regs( unsigned int flags )
 180 {
 181     return 0;  /* FIXME: implement client-side handling */
 182 }
 183
 184 #endif  /* __sparc__ */