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177 lines
3.7 KiB
C
177 lines
3.7 KiB
C
/* Copyright (C) 1998-2020 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/mips 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.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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#include <sgidefs.h>
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/* Type for general register. */
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#if _MIPS_SIM == _ABIO32
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typedef __uint32_t greg_t;
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#else
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typedef __uint64_t greg_t;
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#endif
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/* Number of general registers. */
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#define __NGREG 36
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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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CTX_R0 = 0,
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# define CTX_R0 CTX_R0
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CTX_AT = 1,
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# define CTX_AT CTX_AT
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CTX_V0 = 2,
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# define CTX_V0 CTX_V0
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CTX_V1 = 3,
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# define CTX_V1 CTX_V1
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CTX_A0 = 4,
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# define CTX_A0 CTX_A0
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CTX_A1 = 5,
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# define CTX_A1 CTX_A1
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CTX_A2 = 6,
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# define CTX_A2 CTX_A2
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CTX_A3 = 7,
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# define CTX_A3 CTX_A3
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CTX_T0 = 8,
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# define CTX_T0 CTX_T0
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CTX_T1 = 9,
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# define CTX_T1 CTX_T1
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CTX_T2 = 10,
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# define CTX_T2 CTX_T2
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CTX_T3 = 11,
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# define CTX_T3 CTX_T3
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CTX_T4 = 12,
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# define CTX_T4 CTX_T4
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CTX_T5 = 13,
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# define CTX_T5 CTX_T5
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CTX_T6 = 14,
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# define CTX_T6 CTX_T6
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CTX_T7 = 15,
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# define CTX_T7 CTX_T7
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CTX_S0 = 16,
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# define CTX_S0 CTX_S0
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CTX_S1 = 17,
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# define CTX_S1 CTX_S1
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CTX_S2 = 18,
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# define CTX_S2 CTX_S2
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CTX_S3 = 19,
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# define CTX_S3 CTX_S3
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CTX_S4 = 20,
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# define CTX_S4 CTX_S4
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CTX_S5 = 21,
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# define CTX_S5 CTX_S5
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CTX_S6 = 22,
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# define CTX_S6 CTX_S6
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CTX_S7 = 23,
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# define CTX_S7 CTX_S7
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CTX_T8 = 24,
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# define CTX_T8 CTX_T8
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CTX_T9 = 25,
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# define CTX_T9 CTX_T9
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CTX_K0 = 26,
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# define CTX_K0 CTX_K0
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CTX_K1 = 27,
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# define CTX_K1 CTX_K1
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CTX_GP = 28,
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# define CTX_GP CTX_GP
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CTX_SP = 29,
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# define CTX_SP CTX_SP
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CTX_S8 = 30,
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# define CTX_S8 CTX_S8
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CTX_RA = 31,
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# define CTX_RA CTX_RA
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CTX_MDLO = 32,
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# define CTX_MDLO CTX_MDLO
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CTX_MDHI = 33,
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# define CTX_MDHI CTX_MDHI
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CTX_CAUSE = 34,
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# define CTX_CAUSE CTX_CAUSE
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CTX_EPC = 35,
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# define CTX_EPC CTX_EPC
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};
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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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/* Structure to describe FPU registers. */
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typedef struct
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{
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union
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{
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#if _MIPS_SIM == _ABIO32
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double __ctx(fp_dregs)[16];
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float __ctx(fp_fregs)[32];
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unsigned int __ctx(fp_regs)[32];
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#else
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double __ctx(fp_dregs)[32];
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/* float __ctx(fp_fregs)[32]; */
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__uint64_t __ctx(fp_regs)[32];
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#endif
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} __ctx(fp_r);
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unsigned int __ctx(fp_csr);
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unsigned int __ctx(fp_pad);
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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 __ctx(gpregs);
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fpregset_t __ctx(fpregs);
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} mcontext_t;
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/* Userlevel context. */
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typedef struct ucontext_t
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{
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#if _MIPS_SIM == _ABIO32
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unsigned long int __ctx(uc_flags);
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#else
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__uint64_t __ctx(uc_flags);
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#endif
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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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int __glibc_reserved1[48];
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} ucontext_t;
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#undef __ctx
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#endif /* sys/ucontext.h */
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