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