126 lines
2.6 KiB
C
126 lines
2.6 KiB
C
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/* Copyright (C) 1997-2022 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<https://www.gnu.org/licenses/>. */
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/* System V/m68k ABI compliant 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 <bits/types/sigset_t.h>
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#include <bits/types/stack_t.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 18
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#ifdef __USE_MISC
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# define NGREG __NGREG
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#endif
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/* Container for all general registers. */
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typedef greg_t gregset_t[__NGREG];
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#ifdef __USE_MISC
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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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R_D0 = 0,
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# define R_D0 R_D0
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R_D1 = 1,
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# define R_D1 R_D1
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R_D2 = 2,
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# define R_D2 R_D2
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R_D3 = 3,
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# define R_D3 R_D3
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R_D4 = 4,
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# define R_D4 R_D4
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R_D5 = 5,
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# define R_D5 R_D5
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R_D6 = 6,
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# define R_D6 R_D6
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R_D7 = 7,
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# define R_D7 R_D7
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R_A0 = 8,
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# define R_A0 R_A0
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R_A1 = 9,
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# define R_A1 R_A1
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R_A2 = 10,
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# define R_A2 R_A2
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R_A3 = 11,
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# define R_A3 R_A3
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R_A4 = 12,
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# define R_A4 R_A4
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R_A5 = 13,
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# define R_A5 R_A5
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R_A6 = 14,
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# define R_A6 R_A6
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R_A7 = 15,
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# define R_A7 R_A7
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R_SP = 15,
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# define R_SP R_SP
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R_PC = 16,
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# define R_PC R_PC
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R_PS = 17
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# define R_PS R_PS
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};
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/* Structure to describe FPU registers. */
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typedef struct
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{
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int f_pcr;
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int f_psr;
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int f_fpiaddr;
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int f_fpregs[8][3];
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} fpregset_t;
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#endif
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#ifdef __USE_MISC
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# define __ctx(fld) fld
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#else
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# define __ctx(fld) __ ## fld
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#endif
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/* Context to describe whole processor state. */
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typedef struct
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{
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int __ctx(version);
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gregset_t __ctx(gregs);
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} mcontext_t;
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#ifdef __USE_MISC
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# define MCONTEXT_VERSION 1
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#endif
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/* Userlevel context. */
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typedef struct ucontext_t
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{
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unsigned long int __ctx(uc_flags);
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struct ucontext_t *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 __glibc_reserved1[201];
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} ucontext_t;
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#undef __ctx
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#endif /* sys/ucontext.h */
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