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123 lines
2.6 KiB
C
123 lines
2.6 KiB
C
/* Copyright 1997, 1999, 2000, 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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/* AM33/2.0 context switching support. */
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#ifndef _SYS_UCONTEXT_H
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#define _SYS_UCONTEXT_H 1
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#include <features.h>
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#include <signal.h>
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/* Type for general register. */
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typedef int greg_t;
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/* Number of general registers. */
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#define NGREG 28
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/* Container for all general registers. */
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typedef greg_t gregset_t[NGREG];
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/* Number of each register is the `gregset_t' array. */
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enum
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{
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REG_D0 = 0,
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#define REG_D0 REG_D0
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REG_D1,
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#define REG_D1 REG_D1
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REG_D2,
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#define REG_D2 REG_D2
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REG_D3,
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#define REG_D3 REG_D3
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REG_A0,
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#define REG_A0 REG_A0
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REG_A1,
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#define REG_A1 REG_A1
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REG_A2,
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#define REG_A2 REG_A2
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REG_A3,
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#define REG_A3 REG_A3
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REG_E0,
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#define REG_E0 REG_E0
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REG_E1,
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#define REG_E1 REG_E1
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REG_E2,
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#define REG_E2 REG_E2
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REG_E3,
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#define REG_E3 REG_E3
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REG_E4,
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#define REG_E4 REG_E4
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REG_E5,
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#define REG_E5 REG_E5
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REG_E6,
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#define REG_E6 REG_E6
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REG_E7,
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#define REG_E7 REG_E7
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REG_LAR,
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#define REG_LAR REG_LAR
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REG_LIR,
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#define REG_LIR REG_LIR
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REG_MDR,
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#define REG_MDR REG_MDR
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REG_MCVF,
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#define REG_MCVF REG_MCVF
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REG_MCRL,
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#define REG_MCRL REG_MCRL
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REG_MCRH,
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#define REG_MCRH REG_MCRH
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REG_MDRQ,
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#define REG_MDRQ REG_MDRQ
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REG_SP,
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#define REG_SP REG_SP
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REG_EPSW,
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#define REG_EPSW REG_EPSW
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REG_PC,
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#define REG_PC REG_PC
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};
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typedef int freg_t;
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/* Structure to describe FPU registers. */
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typedef struct {
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union {
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double fp_dregs[16];
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float fp_fregs[32];
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freg_t fp_regs[32];
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} regs;
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freg_t fpcr;
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} fpregset_t;
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/* Context to describe whole processor state. */
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typedef struct
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{
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gregset_t gregs;
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fpregset_t fpregs;
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} mcontext_t;
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/* Userlevel context. */
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typedef struct ucontext
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{
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unsigned long int uc_flags;
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struct ucontext *uc_link;
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__sigset_t uc_sigmask;
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stack_t uc_stack;
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mcontext_t uc_mcontext;
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long int uc_filler[5];
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} ucontext_t;
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#endif /* sys/ucontext.h */
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