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Diffstat (limited to 'sysdeps/mips/bits/ucontext.h')
| -rw-r--r-- | sysdeps/mips/bits/ucontext.h | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/sysdeps/mips/bits/ucontext.h b/sysdeps/mips/bits/ucontext.h new file mode 100644 index 0000000000..2452926915 --- /dev/null +++ b/sysdeps/mips/bits/ucontext.h @@ -0,0 +1,176 @@ +/* Copyright (C) 1998-2020 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <https://www.gnu.org/licenses/>. */ + +/* System V/mips ABI compliant context switching support. */ + +#ifndef _BITS_UCONTEXT_H +#define _BITS_UCONTEXT_H 1 + +#include <features.h> + +#include <bits/types.h> +#include <bits/types/sigset_t.h> +#include <bits/types/stack_t.h> + +#include <sgidefs.h> + + +/* Type for general register. */ +#if _MIPS_SIM == _ABIO32 +typedef __uint32_t greg_t; +#else +typedef __uint64_t greg_t; +#endif + +/* Number of general registers. */ +#define __NGREG 36 +#ifdef __USE_MISC +# define NGREG __NGREG +#endif + +/* Container for all general registers. */ +typedef greg_t gregset_t[__NGREG]; + +#ifdef __USE_MISC +/* Number of each register is the `gregset_t' array. */ +enum +{ + CTX_R0 = 0, +# define CTX_R0 CTX_R0 + CTX_AT = 1, +# define CTX_AT CTX_AT + CTX_V0 = 2, +# define CTX_V0 CTX_V0 + CTX_V1 = 3, +# define CTX_V1 CTX_V1 + CTX_A0 = 4, +# define CTX_A0 CTX_A0 + CTX_A1 = 5, +# define CTX_A1 CTX_A1 + CTX_A2 = 6, +# define CTX_A2 CTX_A2 + CTX_A3 = 7, +# define CTX_A3 CTX_A3 + CTX_T0 = 8, +# define CTX_T0 CTX_T0 + CTX_T1 = 9, +# define CTX_T1 CTX_T1 + CTX_T2 = 10, +# define CTX_T2 CTX_T2 + CTX_T3 = 11, +# define CTX_T3 CTX_T3 + CTX_T4 = 12, +# define CTX_T4 CTX_T4 + CTX_T5 = 13, +# define CTX_T5 CTX_T5 + CTX_T6 = 14, +# define CTX_T6 CTX_T6 + CTX_T7 = 15, +# define CTX_T7 CTX_T7 + CTX_S0 = 16, +# define CTX_S0 CTX_S0 + CTX_S1 = 17, +# define CTX_S1 CTX_S1 + CTX_S2 = 18, +# define CTX_S2 CTX_S2 + CTX_S3 = 19, +# define CTX_S3 CTX_S3 + CTX_S4 = 20, +# define CTX_S4 CTX_S4 + CTX_S5 = 21, +# define CTX_S5 CTX_S5 + CTX_S6 = 22, +# define CTX_S6 CTX_S6 + CTX_S7 = 23, +# define CTX_S7 CTX_S7 + CTX_T8 = 24, +# define CTX_T8 CTX_T8 + CTX_T9 = 25, +# define CTX_T9 CTX_T9 + CTX_K0 = 26, +# define CTX_K0 CTX_K0 + CTX_K1 = 27, +# define CTX_K1 CTX_K1 + CTX_GP = 28, +# define CTX_GP CTX_GP + CTX_SP = 29, +# define CTX_SP CTX_SP + CTX_S8 = 30, +# define CTX_S8 CTX_S8 + CTX_RA = 31, +# define CTX_RA CTX_RA + CTX_MDLO = 32, +# define CTX_MDLO CTX_MDLO + CTX_MDHI = 33, +# define CTX_MDHI CTX_MDHI + CTX_CAUSE = 34, +# define CTX_CAUSE CTX_CAUSE + CTX_EPC = 35, +# define CTX_EPC CTX_EPC +}; +#endif + +#ifdef __USE_MISC +# define __ctx(fld) fld +#else +# define __ctx(fld) __ ## fld +#endif + +/* Structure to describe FPU registers. */ +typedef struct +{ + union + { +#if _MIPS_SIM == _ABIO32 + double __ctx(fp_dregs)[16]; + float __ctx(fp_fregs)[32]; + unsigned int __ctx(fp_regs)[32]; +#else + double __ctx(fp_dregs)[32]; + /* float __ctx(fp_fregs)[32]; */ + __uint64_t __ctx(fp_regs)[32]; +#endif + } __ctx(fp_r); + unsigned int __ctx(fp_csr); + unsigned int __ctx(fp_pad); +} fpregset_t; + +/* Context to describe whole processor state. */ +typedef struct +{ + gregset_t __ctx(gpregs); + fpregset_t __ctx(fpregs); +} mcontext_t; + +/* Userlevel context. */ +typedef struct ucontext_t +{ +#if _MIPS_SIM == _ABIO32 + unsigned long int __ctx(uc_flags); +#else + __uint64_t __ctx(uc_flags); +#endif + struct ucontext_t *uc_link; + sigset_t uc_sigmask; + stack_t uc_stack; + mcontext_t uc_mcontext; + int __glibc_reserved1[48]; +} ucontext_t; + +#undef __ctx + +#endif /* bits/ucontext.h */ |