diff options
Diffstat (limited to 'libc/sysdeps')
| -rw-r--r-- | libc/sysdeps/linux/v850/clone.c | 48 | ||||
| -rw-r--r-- | libc/sysdeps/linux/v850/sys/procfs.h | 136 |
2 files changed, 184 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/v850/clone.c b/libc/sysdeps/linux/v850/clone.c new file mode 100644 index 000000000..33e96b449 --- /dev/null +++ b/libc/sysdeps/linux/v850/clone.c @@ -0,0 +1,48 @@ +/* + * libc/sysdeps/linux/v850/clone.c -- `clone' syscall for linux/v850 + * + * Copyright (C) 2002 NEC Electronics Corporation + * Copyright (C) 2002 Miles Bader <miles@gnu.org> + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of this + * archive for more details. + * + * Written by Miles Bader <miles@gnu.org> + */ + +#include <errno.h> +#include <sys/syscall.h> + +int +clone (int (*fn)(void *arg), void *child_stack, int flags, void *arg) +{ + register unsigned long rval asm (SYSCALL_RET) = -EINVAL; + + if (fn && child_stack) + { + register unsigned long syscall asm (SYSCALL_NUM); + register unsigned long arg0 asm (SYSCALL_ARG0); + + /* Clone this thread. */ + arg0 = flags; + syscall = __NR_clone; + asm volatile ("trap " SYSCALL_SHORT_TRAP + : "=r" (rval), "=r" (syscall) + : "1" (syscall), "r" (arg0) + : SYSCALL_SHORT_CLOBBERS); + + if (rval == 0) + /* In child thread, call FN and exit. */ + { + arg0 = (*fn) (arg); + syscall = __NR_exit; + asm volatile ("trap " SYSCALL_SHORT_TRAP + : "=r" (rval), "=r" (syscall) + : "1" (syscall), "r" (arg0) + : SYSCALL_SHORT_CLOBBERS); + } + } + + __syscall_return (int, rval); +} diff --git a/libc/sysdeps/linux/v850/sys/procfs.h b/libc/sysdeps/linux/v850/sys/procfs.h new file mode 100644 index 000000000..67acb3cce --- /dev/null +++ b/libc/sysdeps/linux/v850/sys/procfs.h @@ -0,0 +1,136 @@ +/* Copyright (C) 1996, 1997, 1999, 2000, 2001, 2002 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _SYS_PROCFS_H +#define _SYS_PROCFS_H 1 + +/* This is somewhat modelled after the file of the same name on SVR4 + systems. It provides a definition of the core file format for ELF + used on Linux. It doesn't have anything to do with the /proc file + system, even though Linux has one. + + Anyway, the whole purpose of this file is for GDB and GDB only. + Don't read too much into it. Don't use it for anything other than + GDB unless you know what you are doing. */ + +#include <features.h> +#include <sys/time.h> +#include <sys/types.h> + + +/* Type for a general-purpose register. */ +typedef unsigned long elf_greg_t; + +/* This is exactly the same as `struct pt_regs' in the kernel. */ +struct elf_gregset +{ + /* General purpose registers. */ + elf_greg_t gpr[32]; + + elf_greg_t pc; /* program counter */ + elf_greg_t psw; /* program status word */ + + /* Registers used by `callt' instruction: */ + elf_greg_t ctpc; /* saved program counter */ + elf_greg_t ctpsw; /* saved psw */ + elf_greg_t ctbp; /* base pointer for callt table */ + + char kernel_mode; /* 1 if in `kernel mode', 0 if user mode */ +}; + +#define ELF_NGREG (sizeof (struct elf_gregset) / sizeof(elf_greg_t)) +typedef elf_greg_t elf_gregset_t[ELF_NGREG]; + +/* Register set for the floating-point registers. */ +typedef void elf_fpregset_t; + + +struct elf_siginfo +{ + int si_signo; /* signal number */ + int si_code; /* extra code */ + int si_errno; /* errno */ +}; + + +/* + * Definitions to generate Intel SVR4-like core files. + * These mostly have the same names as the SVR4 types with "elf_" + * tacked on the front to prevent clashes with linux definitions, + * and the typedef forms have been avoided. This is mostly like + * the SVR4 structure, but more Linuxy, with things that Linux does + * not support and which gdb doesn't really use excluded. + * Fields present but not used are marked with "XXX". + */ +struct elf_prstatus +{ + struct elf_siginfo pr_info; /* Info associated with signal */ + short pr_cursig; /* Current signal */ + unsigned long pr_sigpend; /* Set of pending signals */ + unsigned long pr_sighold; /* Set of held signals */ + __kernel_pid_t pr_pid; + __kernel_pid_t pr_ppid; + __kernel_pid_t pr_pgrp; + __kernel_pid_t pr_sid; + struct timeval pr_utime; /* User time */ + struct timeval pr_stime; /* System time */ + struct timeval pr_cutime; /* Cumulative user time */ + struct timeval pr_cstime; /* Cumulative system time */ + elf_gregset_t pr_reg; /* GP registers */ + int pr_fpvalid; /* True if math co-processor being used. */ +}; + +#define ELF_PRARGSZ (80) /* Number of chars for args */ + +struct elf_prpsinfo +{ + char pr_state; /* numeric process state */ + char pr_sname; /* char for pr_state */ + char pr_zomb; /* zombie */ + char pr_nice; /* nice val */ + unsigned long pr_flag; /* flags */ + __kernel_uid_t pr_uid; + __kernel_gid_t pr_gid; + __kernel_pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid; + /* Lots missing */ + char pr_fname[16]; /* filename of executable */ + char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */ +}; + + +/* The rest of this file provides the types for emulation of the + Solaris <proc_service.h> interfaces that should be implemented by + users of libthread_db. */ + +/* Addresses. */ +typedef void *psaddr_t; + +/* Register sets. Linux has different names. */ +typedef elf_gregset_t prgregset_t; +typedef elf_fpregset_t prfpregset_t; + +/* We don't have any differences between processes and threads, + therefore have only one PID type. */ +typedef __kernel_pid_t lwpid_t; + +/* Process status and info. In the end we do provide typedefs for them. */ +typedef struct elf_prstatus prstatus_t; +typedef struct elf_prpsinfo prpsinfo_t; + + +#endif /* sys/procfs.h */ |