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>
42 #if defined(__sun) || defined(__sun__)
44 /* retrieve a thread context */
45 static void get_thread_context( struct thread *thread, unsigned int flags, CONTEXT *context )
47 int pid = thread->unix_pid;
48 if (flags & CONTEXT_FULL)
51 if (ptrace( PTRACE_GETREGS, pid, 0, (int) ®s ) == -1) goto error;
52 if (flags & CONTEXT_INTEGER)
55 context->g1 = regs.r_g1;
56 context->g2 = regs.r_g2;
57 context->g3 = regs.r_g3;
58 context->g4 = regs.r_g4;
59 context->g5 = regs.r_g5;
60 context->g6 = regs.r_g6;
61 context->g7 = regs.r_g7;
63 context->o0 = regs.r_o0;
64 context->o1 = regs.r_o1;
65 context->o2 = regs.r_o2;
66 context->o3 = regs.r_o3;
67 context->o4 = regs.r_o4;
68 context->o5 = regs.r_o5;
69 context->o6 = regs.r_o6;
70 context->o7 = regs.r_o7;
72 /* FIXME: local and in registers */
74 if (flags & CONTEXT_CONTROL)
76 context->psr = regs.r_psr;
77 context->pc = regs.r_pc;
78 context->npc = regs.r_npc;
79 context->y = regs.r_y;
80 context->wim = 0; /* FIXME */
81 context->tbr = 0; /* FIXME */
84 if (flags & CONTEXT_FLOATING_POINT)
94 /* set a thread context */
95 static void set_thread_context( struct thread *thread, unsigned int flags, const CONTEXT *context )
101 #error You must implement get/set_thread_context for your platform
105 /* copy a context structure according to the flags */
106 static void copy_context( CONTEXT *to, const CONTEXT *from, int flags )
108 if (flags & CONTEXT_CONTROL)
117 if (flags & CONTEXT_INTEGER)
152 if (flags & CONTEXT_FLOATING_POINT)
158 /* retrieve the current instruction pointer of a thread */
159 void *get_thread_ip( struct thread *thread )
163 if (suspend_for_ptrace( thread ))
165 get_thread_context( thread, CONTEXT_CONTROL, &context );
166 resume_thread( thread );
168 return (void *)context.pc;
171 /* determine if we should continue the thread in single-step mode */
172 int get_thread_single_step( struct thread *thread )
174 return 0; /* FIXME */
177 /* retrieve the current context of a thread */
178 DECL_HANDLER(get_thread_context)
180 struct thread *thread;
182 int flags = req->flags & ~CONTEXT_SPARC; /* get rid of CPU id */
184 if (get_reply_max_size() < sizeof(CONTEXT))
186 set_error( STATUS_INVALID_PARAMETER );
189 if (!(thread = get_thread_from_handle( req->handle, THREAD_GET_CONTEXT ))) return;
191 if ((data = set_reply_data_size( sizeof(CONTEXT) )))
193 if (thread->context) /* thread is inside an exception event */
195 copy_context( data, thread->context, flags );
198 if (flags && suspend_for_ptrace( thread ))
200 get_thread_context( thread, flags, data );
201 resume_thread( thread );
204 release_object( thread );
208 /* set the current context of a thread */
209 DECL_HANDLER(set_thread_context)
211 struct thread *thread;
212 int flags = req->flags & ~CONTEXT_SPARC; /* get rid of CPU id */
214 if (get_req_data_size() < sizeof(CONTEXT))
216 set_error( STATUS_INVALID_PARAMETER );
219 if ((thread = get_thread_from_handle( req->handle, THREAD_SET_CONTEXT )))
221 if (thread->context) /* thread is inside an exception event */
223 copy_context( thread->context, get_req_data(), flags );
226 if (flags && suspend_for_ptrace( thread ))
228 set_thread_context( thread, flags, get_req_data() );
229 resume_thread( thread );
231 release_object( thread );
235 #endif /* __sparc__ */