c5c6b7b38e
struct sigcontext and ucontext_t/mcontext_t are defined in such
a way that both (ie struct sigcontext and ucontext_t) can be
passed on to sigreturn. The signal handler is still given a
ucontext_t for maximum flexibility.
For backward compatibility sigreturn restores the state for the
alternate signal stack from sigcontext.sc_onstack and not from
ucontext_t.uc_stack. A good way to determine which value the
application has set and thus which value to use, is still open
for discussion.
NOTE: This change should only affect those binaries that use
sigcontext and/or ucontext_t. In the source tree itself
this is only doscmd. Recompilation is required for those
applications.
This commit also fixes a lot of style bugs without hopefully
adding new ones.
NOTE: struct sigaltstack.ss_size now has type size_t again. For
some reason I changed that into unsigned int.
Parts submitted by: bde
sigaltstack bug found by: bde
117 lines
2.6 KiB
C
117 lines
2.6 KiB
C
/* $FreeBSD$ */
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/* From: NetBSD: reg.h,v 1.3 1997/04/06 08:47:40 cgd Exp */
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/*
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* Copyright (c) 1994, 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#ifndef _ALPHA_REG_H_
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#define _ALPHA_REG_H_
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/*
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* XXX where did this info come from?
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*/
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/*
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* Struct reg, used for procfs and in signal contexts
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* Note that in signal contexts, it's represented as an array.
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* That array has to look exactly like 'struct reg' though.
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*/
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#define R_V0 0
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#define R_T0 1
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#define R_T1 2
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#define R_T2 3
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#define R_T3 4
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#define R_T4 5
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#define R_T5 6
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#define R_T6 7
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#define R_T7 8
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#define R_S0 9
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#define R_S1 10
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#define R_S2 11
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#define R_S3 12
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#define R_S4 13
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#define R_S5 14
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#define R_S6 15
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#define R_A0 16
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#define R_A1 17
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#define R_A2 18
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#define R_A3 19
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#define R_A4 20
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#define R_A5 21
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#define R_T8 22
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#define R_T9 23
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#define R_T10 24
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#define R_T11 25
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#define R_RA 26
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#define R_T12 27
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#define R_AT 28
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#define R_GP 29
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#define R_SP 30
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#define R_ZERO 31
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/*
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* Register extensions used in mcontext_t
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*/
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#define R_PS 32
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#define R_PC 33
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#define R_TRAPARG_A0 34
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#define R_TRAPARG_A1 35
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#define R_TRAPARG_A2 36
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struct reg {
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u_int64_t r_regs[32];
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};
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/*
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* Floating point unit state. (also, register set used for ptrace.)
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*
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* The floating point registers for a process, saved only when
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* necessary.
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*
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* Note that in signal contexts, it's represented as an array.
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* That array has to look exactly like 'struct reg' though.
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*/
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struct fpreg {
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u_int64_t fpr_regs[32];
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u_int64_t fpr_cr;
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};
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/*
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* Placeholder.
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*/
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struct dbreg {
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unsigned long wankage;
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};
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#ifdef KERNEL
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void restorefpstate __P((struct fpreg *));
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void savefpstate __P((struct fpreg *));
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void setregs __P((struct proc *, u_long, u_long, u_long));
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#endif
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#endif /* _ALPHA_REG_H_ */
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