237 lines
6.2 KiB
C
237 lines
6.2 KiB
C
/*
|
|
* Sparc register context support
|
|
*
|
|
* Copyright (C) 2000 Ulrich Weigand
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#ifdef __sparc__
|
|
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <sys/types.h>
|
|
#ifdef HAVE_SYS_REG_H
|
|
# include <sys/reg.h>
|
|
#endif
|
|
#include <unistd.h>
|
|
#ifdef HAVE_SYS_PTRACE_H
|
|
# include <sys/ptrace.h>
|
|
#endif
|
|
|
|
#include "winbase.h"
|
|
|
|
#include "file.h"
|
|
#include "thread.h"
|
|
#include "request.h"
|
|
|
|
|
|
#if defined(__sun) || defined(__sun__)
|
|
|
|
/* retrieve a thread context */
|
|
static void get_thread_context( struct thread *thread, unsigned int flags, CONTEXT *context )
|
|
{
|
|
int pid = thread->unix_pid;
|
|
if (flags & CONTEXT_FULL)
|
|
{
|
|
struct regs regs;
|
|
if (ptrace( PTRACE_GETREGS, pid, 0, (int) ®s ) == -1) goto error;
|
|
if (flags & CONTEXT_INTEGER)
|
|
{
|
|
context->g0 = 0;
|
|
context->g1 = regs.r_g1;
|
|
context->g2 = regs.r_g2;
|
|
context->g3 = regs.r_g3;
|
|
context->g4 = regs.r_g4;
|
|
context->g5 = regs.r_g5;
|
|
context->g6 = regs.r_g6;
|
|
context->g7 = regs.r_g7;
|
|
|
|
context->o0 = regs.r_o0;
|
|
context->o1 = regs.r_o1;
|
|
context->o2 = regs.r_o2;
|
|
context->o3 = regs.r_o3;
|
|
context->o4 = regs.r_o4;
|
|
context->o5 = regs.r_o5;
|
|
context->o6 = regs.r_o6;
|
|
context->o7 = regs.r_o7;
|
|
|
|
/* FIXME: local and in registers */
|
|
}
|
|
if (flags & CONTEXT_CONTROL)
|
|
{
|
|
context->psr = regs.r_psr;
|
|
context->pc = regs.r_pc;
|
|
context->npc = regs.r_npc;
|
|
context->y = regs.r_y;
|
|
context->wim = 0; /* FIXME */
|
|
context->tbr = 0; /* FIXME */
|
|
}
|
|
}
|
|
if (flags & CONTEXT_FLOATING_POINT)
|
|
{
|
|
/* FIXME */
|
|
}
|
|
return;
|
|
error:
|
|
file_set_error();
|
|
}
|
|
|
|
|
|
/* set a thread context */
|
|
static void set_thread_context( struct thread *thread, unsigned int flags, const CONTEXT *context )
|
|
{
|
|
/* FIXME */
|
|
}
|
|
|
|
#else /* __sun__ */
|
|
#error You must implement get/set_thread_context for your platform
|
|
#endif /* __sun__ */
|
|
|
|
|
|
/* copy a context structure according to the flags */
|
|
static void copy_context( CONTEXT *to, const CONTEXT *from, int flags )
|
|
{
|
|
if (flags & CONTEXT_CONTROL)
|
|
{
|
|
to->psr = from->psr;
|
|
to->pc = from->pc;
|
|
to->npc = from->npc;
|
|
to->y = from->y;
|
|
to->wim = from->wim;
|
|
to->tbr = from->tbr;
|
|
}
|
|
if (flags & CONTEXT_INTEGER)
|
|
{
|
|
to->g0 = from->g0;
|
|
to->g1 = from->g1;
|
|
to->g2 = from->g2;
|
|
to->g3 = from->g3;
|
|
to->g4 = from->g4;
|
|
to->g5 = from->g5;
|
|
to->g6 = from->g6;
|
|
to->g7 = from->g7;
|
|
to->o0 = from->o0;
|
|
to->o1 = from->o1;
|
|
to->o2 = from->o2;
|
|
to->o3 = from->o3;
|
|
to->o4 = from->o4;
|
|
to->o5 = from->o5;
|
|
to->o6 = from->o6;
|
|
to->o7 = from->o7;
|
|
to->l0 = from->l0;
|
|
to->l1 = from->l1;
|
|
to->l2 = from->l2;
|
|
to->l3 = from->l3;
|
|
to->l4 = from->l4;
|
|
to->l5 = from->l5;
|
|
to->l6 = from->l6;
|
|
to->l7 = from->l7;
|
|
to->i0 = from->i0;
|
|
to->i1 = from->i1;
|
|
to->i2 = from->i2;
|
|
to->i3 = from->i3;
|
|
to->i4 = from->i4;
|
|
to->i5 = from->i5;
|
|
to->i6 = from->i6;
|
|
to->i7 = from->i7;
|
|
}
|
|
if (flags & CONTEXT_FLOATING_POINT)
|
|
{
|
|
/* FIXME */
|
|
}
|
|
}
|
|
|
|
/* retrieve the current instruction pointer of a thread */
|
|
void *get_thread_ip( struct thread *thread )
|
|
{
|
|
CONTEXT context;
|
|
context.pc = 0;
|
|
if (suspend_for_ptrace( thread ))
|
|
{
|
|
get_thread_context( thread, CONTEXT_CONTROL, &context );
|
|
resume_thread( thread );
|
|
}
|
|
return (void *)context.pc;
|
|
}
|
|
|
|
/* determine if we should continue the thread in single-step mode */
|
|
int get_thread_single_step( struct thread *thread )
|
|
{
|
|
return 0; /* FIXME */
|
|
}
|
|
|
|
/* retrieve the current context of a thread */
|
|
DECL_HANDLER(get_thread_context)
|
|
{
|
|
struct thread *thread;
|
|
void *data;
|
|
int flags = req->flags & ~CONTEXT_SPARC; /* get rid of CPU id */
|
|
|
|
if (get_reply_max_size() < sizeof(CONTEXT))
|
|
{
|
|
set_error( STATUS_INVALID_PARAMETER );
|
|
return;
|
|
}
|
|
if (!(thread = get_thread_from_handle( req->handle, THREAD_GET_CONTEXT ))) return;
|
|
|
|
if ((data = set_reply_data_size( sizeof(CONTEXT) )))
|
|
{
|
|
if (thread->context) /* thread is inside an exception event */
|
|
{
|
|
copy_context( data, thread->context, flags );
|
|
flags = 0;
|
|
}
|
|
if (flags && suspend_for_ptrace( thread ))
|
|
{
|
|
get_thread_context( thread, flags, data );
|
|
resume_thread( thread );
|
|
}
|
|
}
|
|
release_object( thread );
|
|
}
|
|
|
|
|
|
/* set the current context of a thread */
|
|
DECL_HANDLER(set_thread_context)
|
|
{
|
|
struct thread *thread;
|
|
int flags = req->flags & ~CONTEXT_SPARC; /* get rid of CPU id */
|
|
|
|
if (get_req_data_size() < sizeof(CONTEXT))
|
|
{
|
|
set_error( STATUS_INVALID_PARAMETER );
|
|
return;
|
|
}
|
|
if ((thread = get_thread_from_handle( req->handle, THREAD_SET_CONTEXT )))
|
|
{
|
|
if (thread->context) /* thread is inside an exception event */
|
|
{
|
|
copy_context( thread->context, get_req_data(), flags );
|
|
flags = 0;
|
|
}
|
|
if (flags && suspend_for_ptrace( thread ))
|
|
{
|
|
set_thread_context( thread, flags, get_req_data() );
|
|
resume_thread( thread );
|
|
}
|
|
release_object( thread );
|
|
}
|
|
}
|
|
|
|
#endif /* __sparc__ */
|