| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com) |
| 3 | * Licensed under the GPL |
| 4 | */ |
| 5 | |
| 6 | #include <stddef.h> |
| 7 | #include <string.h> |
| 8 | #include <asm/ptrace.h> |
| 9 | #include <asm/sigcontext.h> |
| 10 | #include "sysdep/ptrace.h" |
| 11 | #include "kern_util.h" |
| 12 | |
| 13 | void sc_to_sc(void *to_ptr, void *from_ptr) |
| 14 | { |
| 15 | struct sigcontext *to = to_ptr, *from = from_ptr; |
| 16 | |
| 17 | memcpy(to, from, sizeof(*to) + sizeof(struct _fpstate)); |
| 18 | if(from->fpstate != NULL) |
| 19 | to->fpstate = (struct _fpstate *) (to + 1); |
| 20 | } |
| 21 | |
| 22 | unsigned long *sc_sigmask(void *sc_ptr) |
| 23 | { |
| 24 | struct sigcontext *sc = sc_ptr; |
| 25 | return &sc->oldmask; |
| 26 | } |
| 27 | |
| 28 | int sc_get_fpregs(unsigned long buf, void *sc_ptr) |
| 29 | { |
| 30 | struct sigcontext *sc = sc_ptr; |
| 31 | struct _fpstate *from = sc->fpstate, *to = (struct _fpstate *) buf; |
| 32 | int err = 0; |
| 33 | |
| 34 | if(from == NULL){ |
| 35 | err |= clear_user_proc(&to->cw, sizeof(to->cw)); |
| 36 | err |= clear_user_proc(&to->sw, sizeof(to->sw)); |
| 37 | err |= clear_user_proc(&to->tag, sizeof(to->tag)); |
| 38 | err |= clear_user_proc(&to->ipoff, sizeof(to->ipoff)); |
| 39 | err |= clear_user_proc(&to->cssel, sizeof(to->cssel)); |
| 40 | err |= clear_user_proc(&to->dataoff, sizeof(to->dataoff)); |
| 41 | err |= clear_user_proc(&to->datasel, sizeof(to->datasel)); |
| 42 | err |= clear_user_proc(&to->_st, sizeof(to->_st)); |
| 43 | } |
| 44 | else { |
| 45 | err |= copy_to_user_proc(&to->cw, &from->cw, sizeof(to->cw)); |
| 46 | err |= copy_to_user_proc(&to->sw, &from->sw, sizeof(to->sw)); |
| 47 | err |= copy_to_user_proc(&to->tag, &from->tag, |
| 48 | sizeof(to->tag)); |
| 49 | err |= copy_to_user_proc(&to->ipoff, &from->ipoff, |
| 50 | sizeof(to->ipoff)); |
| 51 | err |= copy_to_user_proc(&to->cssel,& from->cssel, |
| 52 | sizeof(to->cssel)); |
| 53 | err |= copy_to_user_proc(&to->dataoff, &from->dataoff, |
| 54 | sizeof(to->dataoff)); |
| 55 | err |= copy_to_user_proc(&to->datasel, &from->datasel, |
| 56 | sizeof(to->datasel)); |
| 57 | err |= copy_to_user_proc(to->_st, from->_st, sizeof(to->_st)); |
| 58 | } |
| 59 | return(err); |
| 60 | } |
| 61 | |
| 62 | /* |
| 63 | * Overrides for Emacs so that we follow Linus's tabbing style. |
| 64 | * Emacs will notice this stuff at the end of the file and automatically |
| 65 | * adjust the settings for this buffer only. This must remain at the end |
| 66 | * of the file. |
| 67 | * --------------------------------------------------------------------------- |
| 68 | * Local variables: |
| 69 | * c-file-style: "linux" |
| 70 | * End: |
| 71 | */ |