2 * Sparc register context support
4 * Copyright (C) 2000 Ulrich Weigand
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.
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.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 #include <sys/types.h>
32 #ifdef HAVE_SYS_PTRACE_H
33 # include <sys/ptrace.h>
43 #if defined(__sun) || defined(__sun__)
45 /* retrieve a thread context */
46 static void get_thread_context( struct thread *thread, unsigned int flags, CONTEXT *context )
48 int pid = get_ptrace_pid(thread);
49 if (flags & CONTEXT_FULL)
52 if (ptrace( PTRACE_GETREGS, pid, 0, (int) ®s ) == -1) goto error;
53 if (flags & CONTEXT_INTEGER)
56 context->g1 = regs.r_g1;
57 context->g2 = regs.r_g2;
58 context->g3 = regs.r_g3;
59 context->g4 = regs.r_g4;
60 context->g5 = regs.r_g5;
61 context->g6 = regs.r_g6;
62 context->g7 = regs.r_g7;
64 context->o0 = regs.r_o0;
65 context->o1 = regs.r_o1;
66 context->o2 = regs.r_o2;
67 context->o3 = regs.r_o3;
68 context->o4 = regs.r_o4;
69 context->o5 = regs.r_o5;
70 context->o6 = regs.r_o6;
71 context->o7 = regs.r_o7;
73 /* FIXME: local and in registers */
75 if (flags & CONTEXT_CONTROL)
77 context->psr = regs.r_psr;
78 context->pc = regs.r_pc;
79 context->npc = regs.r_npc;
80 context->y = regs.r_y;
81 context->wim = 0; /* FIXME */
82 context->tbr = 0; /* FIXME */
85 if (flags & CONTEXT_FLOATING_POINT)
95 /* set a thread context */
96 static void set_thread_context( struct thread *thread, unsigned int flags, const CONTEXT *context )
102 #error You must implement get/set_thread_context for your platform
106 /* copy a context structure according to the flags */
107 static void copy_context( CONTEXT *to, const CONTEXT *from, int flags )
109 if (flags & CONTEXT_CONTROL)
118 if (flags & CONTEXT_INTEGER)
153 if (flags & CONTEXT_FLOATING_POINT)
159 /* retrieve the current instruction pointer of a thread */
160 void *get_thread_ip( struct thread *thread )
164 if (suspend_for_ptrace( thread ))
166 get_thread_context( thread, CONTEXT_CONTROL, &context );
167 resume_after_ptrace( thread );
169 return (void *)context.pc;
172 /* determine if we should continue the thread in single-step mode */
173 int get_thread_single_step( struct thread *thread )
175 return 0; /* FIXME */
178 /* send a signal to a specific thread */
179 int tkill( int pid, int sig )
181 /* FIXME: should do something here */
186 /* retrieve the current context of a thread */
187 DECL_HANDLER(get_thread_context)
189 struct thread *thread;
191 int flags = req->flags & ~CONTEXT_SPARC; /* get rid of CPU id */
193 if (get_reply_max_size() < sizeof(CONTEXT))
195 set_error( STATUS_INVALID_PARAMETER );
198 if (!(thread = get_thread_from_handle( req->handle, THREAD_GET_CONTEXT ))) return;
200 if ((data = set_reply_data_size( sizeof(CONTEXT) )))
202 if (thread->context) /* thread is inside an exception event */
204 copy_context( data, thread->context, flags );
207 if (flags && suspend_for_ptrace( thread ))
209 get_thread_context( thread, flags, data );
210 resume_after_ptrace( thread );
213 release_object( thread );
217 /* set the current context of a thread */
218 DECL_HANDLER(set_thread_context)
220 struct thread *thread;
221 int flags = req->flags & ~CONTEXT_SPARC; /* get rid of CPU id */
223 if (get_req_data_size() < sizeof(CONTEXT))
225 set_error( STATUS_INVALID_PARAMETER );
228 if ((thread = get_thread_from_handle( req->handle, THREAD_SET_CONTEXT )))
230 if (thread->context) /* thread is inside an exception event */
232 copy_context( thread->context, get_req_data(), flags );
235 if (flags && suspend_for_ptrace( thread ))
237 set_thread_context( thread, flags, get_req_data() );
238 resume_after_ptrace( thread );
240 release_object( thread );
244 #endif /* __sparc__ */