projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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 | */ |