From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- sysdeps/mach/i386/machine-lock.h | 66 ++++++++++++++++++++++++++++++++++++++++ sysdeps/mach/i386/machine-sp.h | 38 +++++++++++++++++++++++ sysdeps/mach/i386/syscall.S | 26 ++++++++++++++++ sysdeps/mach/i386/sysdep.h | 47 ++++++++++++++++++++++++++++ sysdeps/mach/i386/thread_state.h | 38 +++++++++++++++++++++++ 5 files changed, 215 insertions(+) create mode 100644 sysdeps/mach/i386/machine-lock.h create mode 100644 sysdeps/mach/i386/machine-sp.h create mode 100644 sysdeps/mach/i386/syscall.S create mode 100644 sysdeps/mach/i386/sysdep.h create mode 100644 sysdeps/mach/i386/thread_state.h (limited to 'sysdeps/mach/i386') diff --git a/sysdeps/mach/i386/machine-lock.h b/sysdeps/mach/i386/machine-lock.h new file mode 100644 index 0000000000..bdc57e0997 --- /dev/null +++ b/sysdeps/mach/i386/machine-lock.h @@ -0,0 +1,66 @@ +/* Machine-specific definition for spin locks. i386 version. +Copyright (C) 1994 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 Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#ifndef _MACHINE_LOCK_H +#define _MACHINE_LOCK_H + +/* The type of a spin lock variable. */ + +typedef __volatile int __spin_lock_t; + +/* Value to initialize `__spin_lock_t' variables to. */ + +#define __SPIN_LOCK_INITIALIZER 0 + + +#ifndef _EXTERN_INLINE +#define _EXTERN_INLINE extern __inline +#endif + +/* Unlock LOCK. */ + +_EXTERN_INLINE void +__spin_unlock (__spin_lock_t *__lock) +{ + register int __unlocked; + __asm__ __volatile ("xchgl %0, %1" + : "=&r" (__unlocked), "=m" (*__lock) : "0" (0)); +} + +/* Try to lock LOCK; return nonzero if we locked it, zero if another has. */ + +_EXTERN_INLINE int +__spin_try_lock (__spin_lock_t *__lock) +{ + register int __locked; + __asm__ __volatile ("xchgl %0, %1" + : "=&r" (__locked), "=m" (*__lock) : "0" (1)); + return !__locked; +} + +/* Return nonzero if LOCK is locked. */ + +_EXTERN_INLINE int +__spin_lock_locked (__spin_lock_t *__lock) +{ + return *__lock != 0; +} + + +#endif /* machine-lock.h */ diff --git a/sysdeps/mach/i386/machine-sp.h b/sysdeps/mach/i386/machine-sp.h new file mode 100644 index 0000000000..7fd15413f5 --- /dev/null +++ b/sysdeps/mach/i386/machine-sp.h @@ -0,0 +1,38 @@ +/* Machine-specific function to return the stack pointer. i386 version. +Copyright (C) 1994 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 Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#ifndef _MACHINE_SP_H +#define _MACHINE_SP_H + +/* Return the current stack pointer. */ + +#ifndef _EXTERN_INLINE +#define _EXTERN_INLINE extern __inline +#endif + +_EXTERN_INLINE void * +__thread_stack_pointer (void) +{ + void *__sp__; + __asm__ ("movl %%esp, %0" : "=r" (__sp__)); + return __sp__; +} + +#endif /* machine-sp.h */ + diff --git a/sysdeps/mach/i386/syscall.S b/sysdeps/mach/i386/syscall.S new file mode 100644 index 0000000000..1e9fbb81e8 --- /dev/null +++ b/sysdeps/mach/i386/syscall.S @@ -0,0 +1,26 @@ +/* Copyright (C) 1993 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 Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include + +ENTRY (syscall) + popl %ecx /* Pop return address into %ecx. */ + popl %eax /* Pop syscall number into %eax. */ + pushl %ecx /* Push back return address. */ + .byte 0x9a, 0, 0, 0, 0, 7, 0 /* lcall $7, $0 -- gas bug */ + ret diff --git a/sysdeps/mach/i386/sysdep.h b/sysdeps/mach/i386/sysdep.h new file mode 100644 index 0000000000..8d482a0485 --- /dev/null +++ b/sysdeps/mach/i386/sysdep.h @@ -0,0 +1,47 @@ +/* Copyright (C) 1991, 1992, 1993, 1994 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 Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#define MOVE(x,y) movl x , y + +#define LOSE asm volatile ("hlt") + +#define SNARF_ARGS(argc, argv, envp) \ + do \ + { \ + int *entry_sp; \ + register char **p; \ + \ + asm ("leal 4(%%ebp), %0" : "=r" (entry_sp)); \ + \ + argc = *entry_sp; \ + argv = (char **) (entry_sp + 1); \ + p = argv; \ + while (*p++ != NULL) \ + ; \ + if (p >= (char **) argv[0]) \ + --p; \ + envp = p; \ + } while (0) + +#define CALL_WITH_SP(fn, sp) \ + asm volatile ("movl %0, %%esp; jmp %1" : : \ + "g" (sp), "m" (*(long int *) (fn)) : "%esp") + +#define STACK_GROWTH_DOWN + +#include_next diff --git a/sysdeps/mach/i386/thread_state.h b/sysdeps/mach/i386/thread_state.h new file mode 100644 index 0000000000..89779b60ed --- /dev/null +++ b/sysdeps/mach/i386/thread_state.h @@ -0,0 +1,38 @@ +/* Mach thread state definitions for machine-independent code. i386 version. +Copyright (C) 1994 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 Library General Public License as +published by the Free Software Foundation; either version 2 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 +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include + +#define MACHINE_THREAD_STATE_FLAVOR i386_THREAD_STATE +#define MACHINE_THREAD_STATE_COUNT i386_THREAD_STATE_COUNT + +#define machine_thread_state i386_thread_state + +#define PC eip +#define SP uesp +#define SYSRETURN eax + +struct machine_thread_all_state + { + int set; /* Mask of bits (1 << FLAVOR). */ + struct i386_thread_state basic; + struct i386_float_state fpu; + }; + +#include_next -- cgit v1.2.3