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/*
* Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
*/
#include <stddef.h>
#include <string.h>
#include <asm/ptrace.h>
#include <asm/sigcontext.h>
#include "sysdep/ptrace.h"
#include "kern_util.h"
void sc_to_sc(void *to_ptr, void *from_ptr)
{
struct sigcontext *to = to_ptr, *from = from_ptr;
memcpy(to, from, sizeof(*to) + sizeof(struct _fpstate));
if(from->fpstate != NULL)
to->fpstate = (struct _fpstate *) (to + 1);
}
unsigned long *sc_sigmask(void *sc_ptr)
{
struct sigcontext *sc = sc_ptr;
return &sc->oldmask;
}
int sc_get_fpregs(unsigned long buf, void *sc_ptr)
{
struct sigcontext *sc = sc_ptr;
struct _fpstate *from = sc->fpstate, *to = (struct _fpstate *) buf;
int err = 0;
if(from == NULL){
err |= clear_user_proc(&to->cw, sizeof(to->cw));
err |= clear_user_proc(&to->sw, sizeof(to->sw));
err |= clear_user_proc(&to->tag, sizeof(to->tag));
err |= clear_user_proc(&to->ipoff, sizeof(to->ipoff));
err |= clear_user_proc(&to->cssel, sizeof(to->cssel));
err |= clear_user_proc(&to->dataoff, sizeof(to->dataoff));
err |= clear_user_proc(&to->datasel, sizeof(to->datasel));
err |= clear_user_proc(&to->_st, sizeof(to->_st));
}
else {
err |= copy_to_user_proc(&to->cw, &from->cw, sizeof(to->cw));
err |= copy_to_user_proc(&to->sw, &from->sw, sizeof(to->sw));
err |= copy_to_user_proc(&to->tag, &from->tag,
sizeof(to->tag));
err |= copy_to_user_proc(&to->ipoff, &from->ipoff,
sizeof(to->ipoff));
err |= copy_to_user_proc(&to->cssel,& from->cssel,
sizeof(to->cssel));
err |= copy_to_user_proc(&to->dataoff, &from->dataoff,
sizeof(to->dataoff));
err |= copy_to_user_proc(&to->datasel, &from->datasel,
sizeof(to->datasel));
err |= copy_to_user_proc(to->_st, from->_st, sizeof(to->_st));
}
return(err);
}
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* Emacs will notice this stuff at the end of the file and automatically
* adjust the settings for this buffer only. This must remain at the end
* of the file.
* ---------------------------------------------------------------------------
* Local variables:
* c-file-style: "linux"
* End:
*/
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