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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
27 #include <sys/types.h>
33 #ifdef HAVE_SYS_PTRACE_H
34 # include <sys/ptrace.h>
44 #if defined(__sun) || defined(__sun__)
46 /* retrieve a thread context */
47 static void get_thread_context_ptrace( struct thread *thread, unsigned int flags, CONTEXT *context )
49 int pid = get_ptrace_pid(thread);
50 if (flags & CONTEXT_FULL)
53 if (ptrace( PTRACE_GETREGS, pid, 0, (int) ®s ) == -1) goto error;
54 if (flags & CONTEXT_INTEGER)
57 context->g1 = regs.r_g1;
58 context->g2 = regs.r_g2;
59 context->g3 = regs.r_g3;
60 context->g4 = regs.r_g4;
61 context->g5 = regs.r_g5;
62 context->g6 = regs.r_g6;
63 context->g7 = regs.r_g7;
65 context->o0 = regs.r_o0;
66 context->o1 = regs.r_o1;
67 context->o2 = regs.r_o2;
68 context->o3 = regs.r_o3;
69 context->o4 = regs.r_o4;
70 context->o5 = regs.r_o5;
71 context->o6 = regs.r_o6;
72 context->o7 = regs.r_o7;
74 /* FIXME: local and in registers */
76 if (flags & CONTEXT_CONTROL)
78 context->psr = regs.r_psr;
79 context->pc = regs.r_pc;
80 context->npc = regs.r_npc;
81 context->y = regs.r_y;
82 context->wim = 0; /* FIXME */
83 context->tbr = 0; /* FIXME */
85 context |= flags & (CONTEXT_CONTROL|CONTEXT_INTEGER);
87 if (flags & CONTEXT_FLOATING_POINT)
97 /* set a thread context */
98 static void set_thread_context_ptrace( struct thread *thread, unsigned int flags, const CONTEXT *context )
104 #error You must implement get/set_thread_context_ptrace for your platform
108 /* copy a context structure according to the flags */
109 static void copy_context( CONTEXT *to, const CONTEXT *from, unsigned int flags )
111 if (flags & CONTEXT_CONTROL)
120 if (flags & CONTEXT_INTEGER)
155 if (flags & CONTEXT_FLOATING_POINT)
159 context |= flags & (CONTEXT_CONTROL|CONTEXT_INTEGER);
162 /* retrieve the current instruction pointer of a context */
163 void *get_context_ip( const CONTEXT *context )
165 return (void *)context->pc;
168 /* retrieve the thread context */
169 void get_thread_context( struct thread *thread, CONTEXT *context, unsigned int flags )
171 context->ContextFlags |= CONTEXT_SPARC;
172 flags &= ~CONTEXT_SPARC; /* get rid of CPU id */
174 if (thread->context) /* thread is inside an exception event or suspended */
176 copy_context( context, thread->context, flags );
178 else if (flags && suspend_for_ptrace( thread ))
180 get_thread_context_ptrace( thread, flags, context );
181 resume_after_ptrace( thread );
185 /* set the thread context */
186 void set_thread_context( struct thread *thread, const CONTEXT *context, unsigned int flags )
188 flags &= ~CONTEXT_SPARC; /* get rid of CPU id */
190 if (thread->context) /* thread is inside an exception event or suspended */
192 copy_context( thread->context, context, flags );
194 else if (flags && suspend_for_ptrace( thread ))
196 set_thread_context_ptrace( thread, flags, context );
197 resume_after_ptrace( thread );
201 #endif /* __sparc__ */