diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/arm/bits/ucontext.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/arm/bits/ucontext.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/arm/bits/ucontext.h b/sysdeps/unix/sysv/linux/arm/bits/ucontext.h new file mode 100644 index 0000000000..81371ca4d0 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arm/bits/ucontext.h @@ -0,0 +1,144 @@ +/* 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/ARM ABI compliant context switching support. */ + +#ifndef _BITS_UCONTEXT_H +#define _BITS_UCONTEXT_H 1 + +#include <features.h> + +#include <bits/types/sigset_t.h> +#include <bits/types/stack_t.h> + + +#ifdef __USE_MISC +# define __ctx(fld) fld +#else +# define __ctx(fld) __ ## fld +#endif + +#ifdef __USE_MISC +typedef int greg_t; + +/* Number of general registers. */ +# define NGREG 18 + +/* Container for all general registers. */ +typedef greg_t gregset_t[NGREG]; + +/* Number of each register is the `gregset_t' array. */ +enum +{ + REG_R0 = 0, +# define REG_R0 REG_R0 + REG_R1 = 1, +# define REG_R1 REG_R1 + REG_R2 = 2, +# define REG_R2 REG_R2 + REG_R3 = 3, +# define REG_R3 REG_R3 + REG_R4 = 4, +# define REG_R4 REG_R4 + REG_R5 = 5, +# define REG_R5 REG_R5 + REG_R6 = 6, +# define REG_R6 REG_R6 + REG_R7 = 7, +# define REG_R7 REG_R7 + REG_R8 = 8, +# define REG_R8 REG_R8 + REG_R9 = 9, +# define REG_R9 REG_R9 + REG_R10 = 10, +# define REG_R10 REG_R10 + REG_R11 = 11, +# define REG_R11 REG_R11 + REG_R12 = 12, +# define REG_R12 REG_R12 + REG_R13 = 13, +# define REG_R13 REG_R13 + REG_R14 = 14, +# define REG_R14 REG_R14 + REG_R15 = 15 +# define REG_R15 REG_R15 +}; + +struct _libc_fpstate +{ + struct + { + unsigned int sign1:1; + unsigned int unused:15; + unsigned int sign2:1; + unsigned int exponent:14; + unsigned int j:1; + unsigned int mantissa1:31; + unsigned int mantissa0:32; + } fpregs[8]; + unsigned int fpsr:32; + unsigned int fpcr:32; + unsigned char ftype[8]; + unsigned int init_flag; +}; +/* Structure to describe FPU registers. */ +typedef struct _libc_fpstate fpregset_t; +#endif + +/* Context to describe whole processor state. This only describes + the core registers; coprocessor registers get saved elsewhere + (e.g. in uc_regspace, or somewhere unspecified on the stack + during non-RT signal handlers). */ +typedef struct + { + unsigned long int __ctx(trap_no); + unsigned long int __ctx(error_code); + unsigned long int __ctx(oldmask); + unsigned long int __ctx(arm_r0); + unsigned long int __ctx(arm_r1); + unsigned long int __ctx(arm_r2); + unsigned long int __ctx(arm_r3); + unsigned long int __ctx(arm_r4); + unsigned long int __ctx(arm_r5); + unsigned long int __ctx(arm_r6); + unsigned long int __ctx(arm_r7); + unsigned long int __ctx(arm_r8); + unsigned long int __ctx(arm_r9); + unsigned long int __ctx(arm_r10); + unsigned long int __ctx(arm_fp); + unsigned long int __ctx(arm_ip); + unsigned long int __ctx(arm_sp); + unsigned long int __ctx(arm_lr); + unsigned long int __ctx(arm_pc); + unsigned long int __ctx(arm_cpsr); + unsigned long int __ctx(fault_address); + } mcontext_t; + +/* Userlevel context. */ +typedef struct ucontext_t + { + unsigned long __ctx(uc_flags); + struct ucontext_t *uc_link; + stack_t uc_stack; + mcontext_t uc_mcontext; + sigset_t uc_sigmask; + unsigned long __ctx(uc_regspace)[128] __attribute__((__aligned__(8))); + } ucontext_t; + +#undef __ctx + +#endif /* bits/ucontext.h */ |