Signed-off-by: Vineet Gupta <vgupta@xxxxxxxxxxxx> --- sysdeps/arc/nptl/pthreaddef.h | 32 +++++++ sysdeps/unix/sysv/linux/arc/bits/procfs.h | 35 +++++++ .../sysv/linux/arc/bits/types/__sigset_t.h | 12 +++ sysdeps/unix/sysv/linux/arc/getcontext.S | 63 +++++++++++++ sysdeps/unix/sysv/linux/arc/makecontext.c | 73 +++++++++++++++ sysdeps/unix/sysv/linux/arc/setcontext.S | 92 +++++++++++++++++++ sysdeps/unix/sysv/linux/arc/sigcontextinfo.h | 28 ++++++ sysdeps/unix/sysv/linux/arc/swapcontext.S | 92 +++++++++++++++++++ sysdeps/unix/sysv/linux/arc/sys/cachectl.h | 36 ++++++++ sysdeps/unix/sysv/linux/arc/sys/ucontext.h | 61 ++++++++++++ sysdeps/unix/sysv/linux/arc/sys/user.h | 31 +++++++ sysdeps/unix/sysv/linux/arc/ucontext-macros.h | 29 ++++++ sysdeps/unix/sysv/linux/arc/ucontext_i.sym | 20 ++++ 13 files changed, 604 insertions(+) create mode 100644 sysdeps/arc/nptl/pthreaddef.h create mode 100644 sysdeps/unix/sysv/linux/arc/bits/procfs.h create mode 100644 sysdeps/unix/sysv/linux/arc/bits/types/__sigset_t.h create mode 100644 sysdeps/unix/sysv/linux/arc/getcontext.S create mode 100644 sysdeps/unix/sysv/linux/arc/makecontext.c create mode 100644 sysdeps/unix/sysv/linux/arc/setcontext.S create mode 100644 sysdeps/unix/sysv/linux/arc/sigcontextinfo.h create mode 100644 sysdeps/unix/sysv/linux/arc/swapcontext.S create mode 100644 sysdeps/unix/sysv/linux/arc/sys/cachectl.h create mode 100644 sysdeps/unix/sysv/linux/arc/sys/ucontext.h create mode 100644 sysdeps/unix/sysv/linux/arc/sys/user.h create mode 100644 sysdeps/unix/sysv/linux/arc/ucontext-macros.h create mode 100644 sysdeps/unix/sysv/linux/arc/ucontext_i.sym diff --git a/sysdeps/arc/nptl/pthreaddef.h b/sysdeps/arc/nptl/pthreaddef.h new file mode 100644 index 000000000000..b265bf1a052c --- /dev/null +++ b/sysdeps/arc/nptl/pthreaddef.h @@ -0,0 +1,32 @@ +/* pthread machine parameter definitions, ARC version. + Copyright (C) 2002-2020 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/>. */ + +/* Default stack size. */ +#define ARCH_STACK_DEFAULT_SIZE (2 * 1024 * 1024) + +/* Required stack pointer alignment at beginning. */ +#define STACK_ALIGN 4 + +/* Minimal stack size after allocating thread descriptor and guard size. */ +#define MINIMAL_REST_STACK 2048 + +/* Alignment requirement for TCB. */ +#define TCB_ALIGNMENT 4 + +/* Location of current stack frame. */ +#define CURRENT_STACK_FRAME __builtin_frame_address (0) diff --git a/sysdeps/unix/sysv/linux/arc/bits/procfs.h b/sysdeps/unix/sysv/linux/arc/bits/procfs.h new file mode 100644 index 000000000000..465c40c71bbd --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/bits/procfs.h @@ -0,0 +1,35 @@ +/* Types for registers for sys/procfs.h. ARC version. + Copyright (C) 1996-2020 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/>. */ + +#ifndef _SYS_PROCFS_H +# error "Never include <bits/procfs.h> directly; use <sys/procfs.h> instead." +#endif + +#include <sys/ucontext.h> + +/* And the whole bunch of them. We could have used `struct + user_regs' directly in the typedef, but tradition says that + the register set is an array, which does have some peculiar + semantics, so leave it that way. */ +#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof (elf_greg_t)) + +typedef unsigned long int elf_greg_t; +typedef unsigned long int elf_gregset_t[ELF_NGREG]; + +/* There's no seperate floating point reg file in ARCv2. */ +typedef struct { } elf_fpregset_t; diff --git a/sysdeps/unix/sysv/linux/arc/bits/types/__sigset_t.h b/sysdeps/unix/sysv/linux/arc/bits/types/__sigset_t.h new file mode 100644 index 000000000000..795638a30bd3 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/bits/types/__sigset_t.h @@ -0,0 +1,12 @@ +/* Architecture-specific __sigset_t definition. ARC version. */ +#ifndef ____sigset_t_defined +#define ____sigset_t_defined + +/* Linux asm-generic syscall ABI expects sigset_t to hold 64 signals. */ +#define _SIGSET_NWORDS (64 / (8 * sizeof (unsigned long int))) +typedef struct +{ + unsigned long int __val[_SIGSET_NWORDS]; +} __sigset_t; + +#endif diff --git a/sysdeps/unix/sysv/linux/arc/getcontext.S b/sysdeps/unix/sysv/linux/arc/getcontext.S new file mode 100644 index 000000000000..e00aeb1a6931 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/getcontext.S @@ -0,0 +1,63 @@ +/* Save current context for ARC. + Copyright (C) 2009-2020 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/>. */ + +#include "ucontext-macros.h" + +/* int getcontext (ucontext_t *ucp) + Save machine context in @ucp and return 0 on success, -1 on error + - saves callee saved registers only + - layout mandated by uncontext_t:m_context (hence different from setjmp). */ + +ENTRY (__getcontext) + + /* Callee saved registers. */ + SAVE_REG (r13, r0, 37) + SAVE_REG (r14, r0, 36) + SAVE_REG (r15, r0, 35) + SAVE_REG (r16, r0, 34) + SAVE_REG (r17, r0, 33) + SAVE_REG (r18, r0, 32) + SAVE_REG (r19, r0, 31) + SAVE_REG (r20, r0, 30) + SAVE_REG (r21, r0, 29) + SAVE_REG (r22, r0, 28) + SAVE_REG (r23, r0, 27) + SAVE_REG (r24, r0, 26) + SAVE_REG (r25, r0, 25) + + SAVE_REG (blink, r0, 7) + SAVE_REG (fp, r0, 8) + SAVE_REG (sp, r0, 23) + + /* Save 0 in r0 placeholder to return 0 when this @ucp activated. */ + mov r9, 0 + SAVE_REG (r9, r0, 22) + + /* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8). */ + mov r3, _NSIG8 + add r2, r0, UCONTEXT_SIGMASK + mov r1, 0 + mov r0, SIG_BLOCK + mov r8, __NR_rt_sigprocmask + ARC_TRAP_INSN + brhi r0, -1024, .Lcall_syscall_err + j.d [blink] + mov r0, 0 /* Success, error handled in .Lcall_syscall_err. */ + +PSEUDO_END (__getcontext) +weak_alias (__getcontext, getcontext) diff --git a/sysdeps/unix/sysv/linux/arc/makecontext.c b/sysdeps/unix/sysv/linux/arc/makecontext.c new file mode 100644 index 000000000000..2aa7f328f6f5 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/makecontext.c @@ -0,0 +1,73 @@ +/* Create new context for ARC. + Copyright (C) 2015-2020 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/>. */ + +#include <sysdep.h> +#include <stdarg.h> +#include <stdint.h> +#include <sys/ucontext.h> + +void +__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...) +{ + extern void __startcontext (void) attribute_hidden; + unsigned long int sp, *r; + va_list vl; + int i, reg_args, stack_args; + + sp = ((unsigned long int) ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size) & ~7; + + ucp->uc_mcontext.__scratch.__sp = sp; + ucp->uc_mcontext.__scratch.__fp = 0; + + /* __startcontext is sort of trampoline to invoke @func + From setcontext pov, the resume address is __startcontext, + set it up in BLINK place holder. */ + + ucp->uc_mcontext.__scratch.__blink = (unsigned long int) &__startcontext; + + /* __startcontext passed 2 types of args + - args to @func setup in canonical r0-r7 + - @func itself in r9, and next function in r10. */ + + ucp->uc_mcontext.__callee.__r13 = (unsigned long int) func; + ucp->uc_mcontext.__callee.__r14 = (unsigned long int) ucp->uc_link; + + r = &ucp->uc_mcontext.__scratch.__r0; + + va_start (vl, argc); + + reg_args = argc > 8 ? 8 : argc; + for (i = 0; i < reg_args; i++) + *r-- = va_arg (vl, unsigned long int); + + stack_args = argc - reg_args; + + if (__glibc_unlikely (stack_args > 0)) + { + sp -= stack_args * sizeof (unsigned long int); + ucp->uc_mcontext.__scratch.__sp = sp; + r = (unsigned long int *)sp; + + for (i = 0; i < stack_args; i++) + *r++ = va_arg (vl, unsigned long int); + } + + va_end (vl); +} + +weak_alias (__makecontext, makecontext) diff --git a/sysdeps/unix/sysv/linux/arc/setcontext.S b/sysdeps/unix/sysv/linux/arc/setcontext.S new file mode 100644 index 000000000000..0cc496be1060 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/setcontext.S @@ -0,0 +1,92 @@ +/* Set current context for ARC. + Copyright (C) 2009-2020 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/>. */ + +#include "ucontext-macros.h" + +/* int setcontext (const ucontext_t *ucp) + - Restores the machine context in @ucp and resumes execution + (doesn't return to caller). */ + +ENTRY (__setcontext) + + mov r9, r0 /* Stash @ucp across syscall. */ + + /* rt_sigprocmask (SIG_SETMASK, &ucp->uc_sigmask, NULL, _NSIG8) */ + mov r3, _NSIG8 + mov r2, 0 + add r1, r0, UCONTEXT_SIGMASK + mov r0, SIG_SETMASK + mov r8, __NR_rt_sigprocmask + ARC_TRAP_INSN + brhi r0, -1024, .Lcall_syscall_err + + /* Restore scratch/arg regs for makecontext case. */ + LOAD_REG (r0, r9, 22) + LOAD_REG (r1, r9, 21) + LOAD_REG (r2, r9, 20) + LOAD_REG (r3, r9, 19) + LOAD_REG (r4, r9, 18) + LOAD_REG (r5, r9, 17) + LOAD_REG (r6, r9, 16) + LOAD_REG (r7, r9, 15) + + /* Restore callee saved registers. */ + LOAD_REG (r13, r9, 37) + LOAD_REG (r14, r9, 36) + LOAD_REG (r15, r9, 35) + LOAD_REG (r16, r9, 34) + LOAD_REG (r17, r9, 33) + LOAD_REG (r18, r9, 32) + LOAD_REG (r19, r9, 31) + LOAD_REG (r20, r9, 30) + LOAD_REG (r21, r9, 29) + LOAD_REG (r22, r9, 28) + LOAD_REG (r23, r9, 27) + LOAD_REG (r24, r9, 26) + LOAD_REG (r25, r9, 25) + + LOAD_REG (blink, r9, 7) + LOAD_REG (fp, r9, 8) + LOAD_REG (sp, r9, 23) + + j [blink] + +PSEUDO_END (__setcontext) +weak_alias (__setcontext, setcontext) + + +/* Helper for activating makecontext created context + - r13 has @func, r14 has uc_link. */ + +ENTRY (__startcontext) + + .cfi_label .Ldummy + cfi_undefined (blink) + + /* Call user @func, loaded in r13 by setcontext. */ + jl [r13] + + /* If uc_link (r14) call setcontext with that. */ + mov r0, r14 + breq r0, 0, 1f + + bl __setcontext +1: + /* Exit with status 0. */ + b HIDDEN_JUMPTARGET(exit) +END (__startcontext) diff --git a/sysdeps/unix/sysv/linux/arc/sigcontextinfo.h b/sysdeps/unix/sysv/linux/arc/sigcontextinfo.h new file mode 100644 index 000000000000..551b4c9c1d2b --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/sigcontextinfo.h @@ -0,0 +1,28 @@ +/* ARC definitions for signal handling calling conventions. + Copyright (C) 2017-2020 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/>. */ + +#ifndef _SIGCONTEXTINFO_H +#define _SIGCONTEXTINFO_H + +static inline uintptr_t +sigcontext_get_pc (const ucontext_t *ctx) +{ + return ctx->uc_mcontext.__scratch.__ret; +} + +#endif diff --git a/sysdeps/unix/sysv/linux/arc/swapcontext.S b/sysdeps/unix/sysv/linux/arc/swapcontext.S new file mode 100644 index 000000000000..80ae73975af9 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/swapcontext.S @@ -0,0 +1,92 @@ +/* Save and set current context for ARC. + Copyright (C) 2009-2020 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/>. */ + +#include "ucontext-macros.h" + +/* int swapcontext (ucontext_t *oucp, const ucontext_t *ucp). */ + +ENTRY (__swapcontext) + + /* Save context into @oucp pointed to by r0. */ + + SAVE_REG (r13, r0, 37) + SAVE_REG (r14, r0, 36) + SAVE_REG (r15, r0, 35) + SAVE_REG (r16, r0, 34) + SAVE_REG (r17, r0, 33) + SAVE_REG (r18, r0, 32) + SAVE_REG (r19, r0, 31) + SAVE_REG (r20, r0, 30) + SAVE_REG (r21, r0, 29) + SAVE_REG (r22, r0, 28) + SAVE_REG (r23, r0, 27) + SAVE_REG (r24, r0, 26) + SAVE_REG (r25, r0, 25) + + SAVE_REG (blink, r0, 7) + SAVE_REG (fp, r0, 8) + SAVE_REG (sp, r0, 23) + + /* Save 0 in r0 placeholder to return 0 when @oucp activated. */ + mov r9, 0 + SAVE_REG (r9, r0, 22) + + /* Load context from @ucp. */ + + mov r9, r1 /* Safekeep @ucp across syscall. */ + + /* rt_sigprocmask (SIG_SETMASK, &ucp->uc_sigmask, &oucp->uc_sigmask, _NSIG8) */ + mov r3, _NSIG8 + add r2, r0, UCONTEXT_SIGMASK + add r1, r1, UCONTEXT_SIGMASK + mov r0, SIG_SETMASK + mov r8, __NR_rt_sigprocmask + ARC_TRAP_INSN + brhi r0, -1024, .Lcall_syscall_err + + LOAD_REG (r0, r9, 22) + LOAD_REG (r1, r9, 21) + LOAD_REG (r2, r9, 20) + LOAD_REG (r3, r9, 19) + LOAD_REG (r4, r9, 18) + LOAD_REG (r5, r9, 17) + LOAD_REG (r6, r9, 16) + LOAD_REG (r7, r9, 15) + + LOAD_REG (r13, r9, 37) + LOAD_REG (r14, r9, 36) + LOAD_REG (r15, r9, 35) + LOAD_REG (r16, r9, 34) + LOAD_REG (r17, r9, 33) + LOAD_REG (r18, r9, 32) + LOAD_REG (r19, r9, 31) + LOAD_REG (r20, r9, 30) + LOAD_REG (r21, r9, 29) + LOAD_REG (r22, r9, 28) + LOAD_REG (r23, r9, 27) + LOAD_REG (r24, r9, 26) + LOAD_REG (r25, r9, 25) + + LOAD_REG (blink, r9, 7) + LOAD_REG (fp, r9, 8) + LOAD_REG (sp, r9, 23) + + j [blink] + +PSEUDO_END (__swapcontext) +weak_alias (__swapcontext, swapcontext) diff --git a/sysdeps/unix/sysv/linux/arc/sys/cachectl.h b/sysdeps/unix/sysv/linux/arc/sys/cachectl.h new file mode 100644 index 000000000000..1acb4018ae69 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/sys/cachectl.h @@ -0,0 +1,36 @@ +/* cacheflush - flush contents of instruction and/or data cache. + Copyright (C) 2017-2020 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/>. */ + +#ifndef _SYS_CACHECTL_H +#define _SYS_CACHECTL_H 1 + +#include <features.h> + +/* Get the kernel definition for the op bits. */ +#include <asm/cachectl.h> + +__BEGIN_DECLS + +#ifdef __USE_MISC +extern int cacheflush (void *__addr, const int __nbytes, const int __op) __THROW; +#endif +extern int _flush_cache (char *__addr, const int __nbytes, const int __op) __THROW; + +__END_DECLS + +#endif /* sys/cachectl.h */ diff --git a/sysdeps/unix/sysv/linux/arc/sys/ucontext.h b/sysdeps/unix/sysv/linux/arc/sys/ucontext.h new file mode 100644 index 000000000000..efbb9b2d20a7 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/sys/ucontext.h @@ -0,0 +1,61 @@ +/* struct ucontext definition, ARC version. + Copyright (C) 2017-2020 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/ARC ABI compliant context switching support. */ + +#ifndef _SYS_UCONTEXT_H +#define _SYS_UCONTEXT_H 1 + +#include <features.h> + +#include <bits/types/sigset_t.h> +#include <bits/types/stack_t.h> + +typedef struct + { + unsigned long int __pad; + struct { + unsigned long int __bta; + unsigned long int __lp_start, __lp_end, __lp_count; + unsigned long int __status32, __ret, __blink; + unsigned long int __fp, __gp; + unsigned long int __r12, __r11, __r10, __r9, __r8, __r7; + unsigned long int __r6, __r5, __r4, __r3, __r2, __r1, __r0; + unsigned long int __sp; + } __scratch; + unsigned long int __pad2; + struct { + unsigned long int __r25, __r24, __r23, __r22, __r21, __r20; + unsigned long int __r19, __r18, __r17, __r16, __r15, __r14, __r13; + } __callee; + unsigned long int __efa; + unsigned long int __stop_pc; + unsigned long int __r30, __r58, __r59; + } mcontext_t; + +/* Userlevel context. */ +typedef struct ucontext_t + { + unsigned long int __uc_flags; + struct ucontext_t *uc_link; + stack_t uc_stack; + mcontext_t uc_mcontext; + sigset_t uc_sigmask; + } ucontext_t; + +#endif /* sys/ucontext.h */ diff --git a/sysdeps/unix/sysv/linux/arc/sys/user.h b/sysdeps/unix/sysv/linux/arc/sys/user.h new file mode 100644 index 000000000000..a556d2113d9c --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/sys/user.h @@ -0,0 +1,31 @@ +/* ptrace register data format definitions. + 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/>. */ + +#ifndef _SYS_USER_H +#define _SYS_USER_H 1 + +/* Struct user_regs_struct is exported by kernel header + However apps like strace also expect a struct user, so it's better to + have a dummy implementation. */ +#include <asm/ptrace.h> + +struct user { + int dummy; +}; + +#endif /* sys/user.h */ diff --git a/sysdeps/unix/sysv/linux/arc/ucontext-macros.h b/sysdeps/unix/sysv/linux/arc/ucontext-macros.h new file mode 100644 index 000000000000..4427be5dedd6 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/ucontext-macros.h @@ -0,0 +1,29 @@ +/* Macros for ucontext routines, ARC version. + Copyright (C) 2017-2020 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/>. */ + +#ifndef _LINUX_ARC_UCONTEXT_MACROS_H +#define _LINUX_ARC_UCONTEXT_MACROS_H + +#include <sysdep.h> + +#include "ucontext_i.h" + +#define SAVE_REG(reg, rbase, off) st reg, [rbase, UCONTEXT_MCONTEXT + off * 4] +#define LOAD_REG(reg, rbase, off) ld reg, [rbase, UCONTEXT_MCONTEXT + off * 4] + +#endif diff --git a/sysdeps/unix/sysv/linux/arc/ucontext_i.sym b/sysdeps/unix/sysv/linux/arc/ucontext_i.sym new file mode 100644 index 000000000000..d84e92f9f543 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/ucontext_i.sym @@ -0,0 +1,20 @@ +#include <inttypes.h> +#include <signal.h> +#include <stddef.h> +#include <sys/ucontext.h> + +SIG_BLOCK +SIG_SETMASK + +-- sizeof(sigset_t) expected by kernel: see comment in ARC sigaction.c for details +_NSIG8 (_NSIG / 8) + +-- Offsets of the fields in the ucontext_t structure. +#define ucontext(member) offsetof (ucontext_t, member) + +UCONTEXT_FLAGS ucontext (__uc_flags) +UCONTEXT_LINK ucontext (uc_link) +UCONTEXT_STACK ucontext (uc_stack) +UCONTEXT_MCONTEXT ucontext (uc_mcontext) +UCONTEXT_SIGMASK ucontext (uc_sigmask) +UCONTEXT_SIZE sizeof (ucontext_t) -- 2.20.1 _______________________________________________ linux-snps-arc mailing list linux-snps-arc@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-snps-arc
