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authorEric Andersen <andersen@codepoet.org>2002-03-01 20:46:26 +0000
committerEric Andersen <andersen@codepoet.org>2002-03-01 20:46:26 +0000
commit9cee42f10dbc5b33866ff137b926a74abd7c1a5b (patch)
tree5211131bde7212ae06d98e9779197cece9b552cc /libc/sysdeps/linux/i386/sys/ucontext.h
parent5b470cfcc321c5d50b951fa93a769a4a193ccece (diff)
Major rework of the include files to eliminate redundancy
and to better support each arch. This is a really big patch... -Erik
Diffstat (limited to 'libc/sysdeps/linux/i386/sys/ucontext.h')
-rw-r--r--libc/sysdeps/linux/i386/sys/ucontext.h129
1 files changed, 129 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/i386/sys/ucontext.h b/libc/sysdeps/linux/i386/sys/ucontext.h
new file mode 100644
index 000000000..d6474c722
--- /dev/null
+++ b/libc/sysdeps/linux/i386/sys/ucontext.h
@@ -0,0 +1,129 @@
+/* Copyright (C) 1997, 1998, 1999, 2000 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_UCONTEXT_H
+#define _SYS_UCONTEXT_H 1
+
+#include <features.h>
+#include <signal.h>
+
+/* We need the signal context definitions even if they are not used
+ included in <signal.h>. */
+#include <bits/sigcontext.h>
+
+
+/* Type for general register. */
+typedef int greg_t;
+
+/* Number of general registers. */
+#define NGREG 19
+
+/* Container for all general registers. */
+typedef greg_t gregset_t[NGREG];
+
+#ifdef __USE_GNU
+/* Number of each register is the `gregset_t' array. */
+enum
+{
+ REG_GS = 0,
+# define REG_GS REG_GS
+ REG_FS,
+# define REG_FS REG_FS
+ REG_ES,
+# define REG_ES REG_ES
+ REG_DS,
+# define REG_DS REG_DS
+ REG_EDI,
+# define REG_EDI REG_EDI
+ REG_ESI,
+# define REG_ESI REG_ESI
+ REG_EBP,
+# define REG_EBP REG_EBP
+ REG_ESP,
+# define REG_ESP REG_ESP
+ REG_EBX,
+# define REG_EBX REG_EBX
+ REG_EDX,
+# define REG_EDX REG_EDX
+ REG_ECX,
+# define REG_ECX REG_ECX
+ REG_EAX,
+# define REG_EAX REG_EAX
+ REG_TRAPNO,
+# define REG_TRAPNO REG_TRAPNO
+ REG_ERR,
+# define REG_ERR REG_ERR
+ REG_EIP,
+# define REG_EIP REG_EIP
+ REG_CS,
+# define REG_CS REG_CS
+ REG_EFL,
+# define REG_EFL REG_EFL
+ REG_UESP,
+# define REG_UESP REG_UESP
+ REG_SS
+# define REG_SS REG_SS
+};
+#endif
+
+/* Definitions taken from the kernel headers. */
+struct _libc_fpreg
+{
+ unsigned short int significand[4];
+ unsigned short int exponent;
+};
+
+struct _libc_fpstate
+{
+ unsigned long int cw;
+ unsigned long int sw;
+ unsigned long int tag;
+ unsigned long int ipoff;
+ unsigned long int cssel;
+ unsigned long int dataoff;
+ unsigned long int datasel;
+ struct _libc_fpreg _st[8];
+ unsigned long int status;
+};
+
+/* Structure to describe FPU registers. */
+typedef struct _libc_fpstate *fpregset_t;
+
+/* Context to describe whole processor state. */
+typedef struct
+ {
+ gregset_t gregs;
+ /* Due to Linux's history we have to use a pointer here. The SysV/i386
+ ABI requires a struct with the values. */
+ fpregset_t fpregs;
+ unsigned long int oldmask;
+ unsigned long int cr2;
+ } mcontext_t;
+
+/* Userlevel context. */
+typedef struct ucontext
+ {
+ unsigned long int uc_flags;
+ struct ucontext *uc_link;
+ stack_t uc_stack;
+ mcontext_t uc_mcontext;
+ __sigset_t uc_sigmask;
+ struct _libc_fpstate __fpregs_mem;
+ } ucontext_t;
+
+#endif /* sys/ucontext.h */