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wine/server/context_powerpc.c

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6.5 KiB
C
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/*
* PowerPC register context support
*
* Copyright (C) 2002 Marcus Meissner, SuSE Linux AG.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#ifdef __powerpc__
#include <assert.h>
#include <errno.h>
#include <sys/types.h>
#ifdef HAVE_SYS_REG_H
# include <sys/reg.h>
#endif
#include <stdarg.h>
#include <unistd.h>
#ifdef HAVE_SYS_PTRACE_H
# include <sys/ptrace.h>
#endif
#include "windef.h"
#if 0 /* no longer used */
#ifndef PTRACE_PEEKUSER
# ifdef PT_READ_D
# define PTRACE_PEEKUSER PT_READ_D
# endif
#endif /* PTRACE_PEEKUSER */
#ifndef PTRACE_POKEUSER
# ifdef PT_WRITE_D
# define PTRACE_POKEUSER PT_WRITE_D
# endif
#endif /* PTRACE_POKEUSER */
#include "file.h"
#include "thread.h"
#include "request.h"
/* retrieve a thread context */
static void get_thread_context_ptrace( struct thread *thread, unsigned int flags, CONTEXT *context )
{
int pid = get_ptrace_pid(thread);
if (flags & CONTEXT_INTEGER)
{
#define XREG(x,y) if (ptrace( PTRACE_PEEKUSER, pid, (void*)(x<<2), &context->y) == -1) goto error;
#define IREG(x) if (ptrace( PTRACE_PEEKUSER, pid, (void*)(x<<2), &context->Gpr##x) == -1) goto error;
IREG(0); IREG(1); IREG(2); IREG(3); IREG(4); IREG(5); IREG(6);
IREG(7); IREG(8); IREG(9); IREG(10); IREG(11); IREG(12); IREG(13);
IREG(14); IREG(15); IREG(16); IREG(17); IREG(18); IREG(19);
IREG(20); IREG(21); IREG(22); IREG(23); IREG(24); IREG(25);
IREG(26); IREG(27); IREG(28); IREG(29); IREG(30); IREG(31);
#undef IREG
XREG(37,Xer);
XREG(38,Cr);
context->ContextFlags |= CONTEXT_INTEGER;
}
if (flags & CONTEXT_CONTROL)
{
XREG(32,Iar);
XREG(33,Msr);
XREG(35,Ctr);
XREG(36,Lr); /* 36 is LNK ... probably Lr ? */
context->ContextFlags |= CONTEXT_CONTROL;
}
if (flags & CONTEXT_FLOATING_POINT)
{
#define FREG(x) if (ptrace( PTRACE_PEEKUSER, pid, (void*)((48+x*2)<<2), &context->Fpr##x) == -1) goto error;
FREG(0);
FREG(1);
FREG(2);
FREG(3);
FREG(4);
FREG(5);
FREG(6);
FREG(7);
FREG(8);
FREG(9);
FREG(10);
FREG(11);
FREG(12);
FREG(13);
FREG(14);
FREG(15);
FREG(16);
FREG(17);
FREG(18);
FREG(19);
FREG(20);
FREG(21);
FREG(22);
FREG(23);
FREG(24);
FREG(25);
FREG(26);
FREG(27);
FREG(28);
FREG(29);
FREG(30);
FREG(31);
XREG((48+32*2),Fpscr);
context->ContextFlags |= CONTEXT_FLOATING_POINT;
}
return;
error:
file_set_error();
}
#undef XREG
#undef IREG
#undef FREG
#define XREG(x,y) if (ptrace( PTRACE_POKEUSER, pid, (void*)(x<<2), &context->y) == -1) goto error;
#define IREG(x) if (ptrace( PTRACE_POKEUSER, pid, (void*)(x<<2), &context->Gpr##x) == -1) goto error;
#define FREG(x) if (ptrace( PTRACE_POKEUSER, pid, (void*)((48+x*2)<<2), &context->Fpr##x) == -1) goto error;
/* set a thread context */
static void set_thread_context_ptrace( struct thread *thread, unsigned int flags, const CONTEXT *context )
{
int pid = get_ptrace_pid(thread);
if (flags & CONTEXT_FULL)
{
if (flags & CONTEXT_INTEGER)
{
IREG(0); IREG(1); IREG(2); IREG(3); IREG(4); IREG(5); IREG(6);
IREG(7); IREG(8); IREG(9); IREG(10); IREG(11); IREG(12); IREG(13);
IREG(14); IREG(15); IREG(16); IREG(17); IREG(18); IREG(19);
IREG(20); IREG(21); IREG(22); IREG(23); IREG(24); IREG(25);
IREG(26); IREG(27); IREG(28); IREG(29); IREG(30); IREG(31);
XREG(37,Xer);
XREG(38,Cr);
}
if (flags & CONTEXT_CONTROL)
{
XREG(32,Iar);
XREG(33,Msr);
XREG(35,Ctr);
XREG(36,Lr);
}
}
if (flags & CONTEXT_FLOATING_POINT)
{
FREG(0);
FREG(1);
FREG(2);
FREG(3);
FREG(4);
FREG(5);
FREG(6);
FREG(7);
FREG(8);
FREG(9);
FREG(10);
FREG(11);
FREG(12);
FREG(13);
FREG(14);
FREG(15);
FREG(16);
FREG(17);
FREG(18);
FREG(19);
FREG(20);
FREG(21);
FREG(22);
FREG(23);
FREG(24);
FREG(25);
FREG(26);
FREG(27);
FREG(28);
FREG(29);
FREG(30);
FREG(31);
#undef FREG
XREG((48+32*2),Fpscr);
}
return;
error:
file_set_error();
}
#undef XREG
#undef IREG
#undef FREG
#endif /* 0 */
#define IREG(x) to->Gpr##x = from->Gpr##x;
#define FREG(x) to->Fpr##x = from->Fpr##x;
#define CREG(x) to->x = from->x;
/* copy a context structure according to the flags */
void copy_context( CONTEXT *to, const CONTEXT *from, unsigned int flags )
{
if (flags & CONTEXT_CONTROL)
{
CREG(Msr);
CREG(Ctr);
CREG(Iar);
to->ContextFlags |= CONTEXT_CONTROL;
}
if (flags & CONTEXT_INTEGER)
{
IREG(0); IREG(1); IREG(2); IREG(3); IREG(4); IREG(5); IREG(6);
IREG(7); IREG(8); IREG(9); IREG(10); IREG(11); IREG(12); IREG(13);
IREG(14); IREG(15); IREG(16); IREG(17); IREG(18); IREG(19);
IREG(20); IREG(21); IREG(22); IREG(23); IREG(24); IREG(25);
IREG(26); IREG(27); IREG(28); IREG(29); IREG(30); IREG(31);
CREG(Xer);
CREG(Cr);
to->ContextFlags |= CONTEXT_INTEGER;
}
if (flags & CONTEXT_FLOATING_POINT)
{
FREG(0);
FREG(1);
FREG(2);
FREG(3);
FREG(4);
FREG(5);
FREG(6);
FREG(7);
FREG(8);
FREG(9);
FREG(10);
FREG(11);
FREG(12);
FREG(13);
FREG(14);
FREG(15);
FREG(16);
FREG(17);
FREG(18);
FREG(19);
FREG(20);
FREG(21);
FREG(22);
FREG(23);
FREG(24);
FREG(25);
FREG(26);
FREG(27);
FREG(28);
FREG(29);
FREG(30);
FREG(31);
CREG(Fpscr);
to->ContextFlags |= CONTEXT_FLOATING_POINT;
}
}
/* retrieve the current instruction pointer of a context */
client_ptr_t get_context_ip( const CONTEXT *context )
{
return context->Iar;
}
/* return the context flag that contains the CPU id */
unsigned int get_context_cpu_flag(void)
{
return 0;
}
/* return only the context flags that correspond to system regs */
/* (system regs are the ones we can't access on the client side) */
unsigned int get_context_system_regs( unsigned int flags )
{
return 0; /* FIXME: implement client-side handling */
}
#endif /* __powerpc__ */
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