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authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /sysdeps/mach/i386
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initial import
Diffstat (limited to 'sysdeps/mach/i386')
-rw-r--r--sysdeps/mach/i386/machine-lock.h66
-rw-r--r--sysdeps/mach/i386/machine-sp.h38
-rw-r--r--sysdeps/mach/i386/syscall.S26
-rw-r--r--sysdeps/mach/i386/sysdep.h47
-rw-r--r--sysdeps/mach/i386/thread_state.h38
5 files changed, 215 insertions, 0 deletions
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 <sysdep.h>
+
+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 <sysdep.h>
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 <mach/machine/thread_status.h>
+
+#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 <thread_state.h>