Major rework of the include files to eliminate redundancy

and to better support each arch.  This is a really big patch...
 -Erik

5 files changed, 645 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/sparc/sys/procfs.h b/libc/sysdeps/linux/sparc/sys/procfs.h
new file mode 100644
index 000000000..e5d35f524
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/sys/procfs.h
@@ -0,0 +1,144 @@
+/* Copyright (C) 1996, 1997, 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_PROCFS_H
+#define _SYS_PROCFS_H	1
+
+/* This is somehow modelled after the file of the same name on SysVr4
+   systems.  It provides a definition of the core file format for ELF
+   used on Linux.  */
+
+#include <features.h>
+#include <signal.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/ucontext.h>
+#include <sys/user.h>
+#include <bits/wordsize.h>
+
+__BEGIN_DECLS
+
+#if __WORDSIZE == 64
+
+#define ELF_NGREG		20
+
+typedef struct
+  {
+    unsigned long	pr_regs[32];
+    unsigned long	pr_fsr;
+    unsigned long	pr_gsr;
+    unsigned long	pr_fprs;
+  } elf_fpregset_t;
+
+#else /* sparc32 */
+
+#define ELF_NGREG		38
+
+typedef struct
+  {
+    union
+      {
+	unsigned long	pr_regs[32];
+	double		pr_dregs[16];
+      }			pr_fr;
+    unsigned long	__unused;
+    unsigned long	pr_fsr;
+    unsigned char	pr_qcnt;
+    unsigned char	pr_q_entrysize;
+    unsigned char	pr_en;
+    unsigned int	pr_q[64];
+  } elf_fpregset_t;
+
+#endif /* sparc32 */
+
+typedef unsigned long elf_greg_t;
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+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 int pr_cursig;		/* Current signal.  */
+    unsigned long int pr_sigpend;	/* Set of pending signals.  */
+    unsigned long int pr_sighold;	/* Set of held signals.  */
+    __pid_t pr_pid;
+    __pid_t pr_ppid;
+    __pid_t pr_pgrp;
+    __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 copro 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 int pr_flag;		/* Flags.  */
+#if __WORDSIZE == 64
+    unsigned int pr_uid;
+    unsigned int pr_gid;
+#else
+    unsigned short int pr_uid;
+    unsigned short int pr_gid;
+#endif
+    int 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.  */
+  };
+
+/* 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 __pid_t lwpid_t;
+
+
+typedef struct elf_prstatus prstatus_t;
+typedef struct elf_prpsinfo prpsinfo_t;
+
+__END_DECLS
+
+#endif	/* sys/procfs.h */
diff --git a/libc/sysdeps/linux/sparc/sys/ptrace.h b/libc/sysdeps/linux/sparc/sys/ptrace.h
new file mode 100644
index 000000000..d573f0e99
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/sys/ptrace.h
@@ -0,0 +1,183 @@
+/* `ptrace' debugger support interface.  Linux/SPARC version.
+   Copyright (C) 1996, 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_PTRACE_H
+#define _SYS_PTRACE_H	1
+
+#include <features.h>
+
+#include <bits/wordsize.h>
+
+/* Linux/SPARC kernels up to 2.3.18 do not care much
+   about what namespace polution, so use a kludge now.  */
+#undef PTRACE_GETREGS
+#undef PTRACE_SETREGS
+#undef PTRACE_GETFPREGS
+#undef PTRACE_SETFPREGS
+#undef PTRACE_READDATA
+#undef PTRACE_WRITEDATA
+#undef PTRACE_READTEXT
+#undef PTRACE_WRITETEXT
+#undef PTRACE_SUNDETACH
+
+__BEGIN_DECLS
+
+/* Type of the REQUEST argument to `ptrace.'  */
+enum __ptrace_request
+{
+  /* Indicate that the process making this request should be traced.
+     All signals received by this process can be intercepted by its
+     parent, and its parent can use the other `ptrace' requests.  */
+  PTRACE_TRACEME = 0,
+#define PT_TRACE_ME PTRACE_TRACEME
+
+  /* Return the word in the process's text space at address ADDR.  */
+  PTRACE_PEEKTEXT = 1,
+#define PT_READ_I PTRACE_PEEKTEXT
+
+  /* Return the word in the process's data space at address ADDR.  */
+  PTRACE_PEEKDATA = 2,
+#define PT_READ_D PTRACE_PEEKDATA
+
+  /* Return the word in the process's user area at offset ADDR.  */
+  PTRACE_PEEKUSER = 3,
+#define PT_READ_U PTRACE_PEEKUSER
+
+  /* Write the word DATA into the process's text space at address ADDR.  */
+  PTRACE_POKETEXT = 4,
+#define PT_WRITE_I PTRACE_POKETEXT
+
+  /* Write the word DATA into the process's data space at address ADDR.  */
+  PTRACE_POKEDATA = 5,
+#define PT_WRITE_D PTRACE_POKEDATA
+
+  /* Write the word DATA into the process's user area at offset ADDR.  */
+  PTRACE_POKEUSER = 6,
+#define PT_WRITE_U PTRACE_POKEUSER
+
+  /* Continue the process.  */
+  PTRACE_CONT = 7,
+#define PT_CONTINUE PTRACE_CONT
+
+  /* Kill the process.  */
+  PTRACE_KILL = 8,
+#define PT_KILL PTRACE_KILL
+
+  /* Single step the process.
+     This is not supported on all machines.  */
+  PTRACE_SINGLESTEP = 9,
+#define PT_STEP PTRACE_SINGLESTEP
+
+  /* Detach from a process attached to with PTRACE_ATTACH.  */
+  PTRACE_DETACH = 11,
+#define PT_DETACH PTRACE_DETACH
+
+  /* This define is needed for older programs which were
+     trying to work around sparc-linux ptrace nastiness.  */
+#define PTRACE_SUNDETACH PTRACE_DETACH
+
+#if __WORDSIZE == 32
+
+  /* Get all general purpose registers used by a processes.
+     This is not supported on all machines.  */
+   PTRACE_GETREGS = 12,
+#define PT_GETREGS PTRACE_GETREGS
+
+  /* Set all general purpose registers used by a processes.
+     This is not supported on all machines.  */
+   PTRACE_SETREGS = 13,
+#define PT_SETREGS PTRACE_SETREGS
+
+  /* Get all floating point registers used by a processes.
+     This is not supported on all machines.  */
+   PTRACE_GETFPREGS = 14,
+#define PT_GETFPREGS PTRACE_GETFPREGS
+
+  /* Set all floating point registers used by a processes.
+     This is not supported on all machines.  */
+   PTRACE_SETFPREGS = 15,
+#define PT_SETFPREGS PTRACE_SETFPREGS
+
+#endif
+
+  /* Attach to a process that is already running. */
+  PTRACE_ATTACH = 16,
+#define PT_ATTACH PTRACE_ATTACH
+
+  /* Write several bytes at a time. */
+  PTRACE_WRITEDATA = 17,
+#define PTRACE_WRITEDATA PTRACE_WRITEDATA
+
+  /* Read several bytes at a time. */
+  PTRACE_READTEXT = 18,
+#define PTRACE_READTEXT PTRACE_READTEXT
+#define PTRACE_READDATA PTRACE_READTEXT
+
+  /* Write several bytes at a time. */
+  PTRACE_WRITETEXT = 19,
+#define PTRACE_WRITETEXT PTRACE_WRITETEXT
+
+#if __WORDSIZE == 64
+
+  /* Get all general purpose registers used by a processes.
+     This is not supported on all machines.  */
+   PTRACE_GETREGS = 22,
+#define PT_GETREGS PTRACE_GETREGS
+
+  /* Set all general purpose registers used by a processes.
+     This is not supported on all machines.  */
+   PTRACE_SETREGS = 23,
+#define PT_SETREGS PTRACE_SETREGS
+
+#endif
+
+  /* Continue and stop at the next (return from) syscall.  */
+  PTRACE_SYSCALL = 24
+#define PTRACE_SYSCALL PTRACE_SYSCALL
+
+#if __WORDSIZE == 64
+
+  ,
+  /* Get all floating point registers used by a processes.
+     This is not supported on all machines.  */
+   PTRACE_GETFPREGS = 25,
+#define PT_GETFPREGS PTRACE_GETFPREGS
+
+  /* Set all floating point registers used by a processes.
+     This is not supported on all machines.  */
+   PTRACE_SETFPREGS = 26
+#define PT_SETFPREGS PTRACE_SETFPREGS
+
+#endif
+};
+
+/* Perform process tracing functions.  REQUEST is one of the values
+   above, and determines the action to be taken.
+   For all requests except PTRACE_TRACEME, PID specifies the process to be
+   traced.
+
+   PID and the other arguments described above for the various requests should
+   appear (those that are used for the particular request) as:
+     pid_t PID, void *ADDR, int DATA, void *ADDR2
+   after REQUEST.  */
+extern long int ptrace (enum __ptrace_request __request, ...) __THROW;
+
+__END_DECLS
+
+#endif /* _SYS_PTRACE_H */
diff --git a/libc/sysdeps/linux/sparc/sys/sysmacros.h b/libc/sysdeps/linux/sparc/sys/sysmacros.h
new file mode 100644
index 000000000..3a2c44d98
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/sys/sysmacros.h
@@ -0,0 +1,41 @@
+/* Definitions of macros to access `dev_t' values.
+   Copyright (C) 1996, 1997, 1999 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_SYSMACROS_H
+#define _SYS_SYSMACROS_H	1
+
+#include <bits/wordsize.h>
+
+/* For compatibility we provide alternative names.
+
+   The problem here is that compilers other than GCC probably don't
+   have the `long long' type and so `dev_t' is actually an array.  */
+#if __WORDSIZE == 64 || (defined __GNUC__ && __GNUC__ >= 2)
+# define major(dev) ((int)(((dev) >> 8) & 0xff))
+# define minor(dev) ((int)((dev) & 0xff))
+# define makedev(major, minor) ((((unsigned int) (major)) << 8) \
+				| ((unsigned int) (minor)))
+#else
+# define major(dev) (((dev).__val[1] >> 8) & 0xff)
+# define minor(dev) ((dev).__val[1] & 0xff)
+# define makedev(major, minor) { 0, ((((unsigned int) (major)) << 8) \
+				     | ((unsigned int) (minor))) }
+#endif
+
+#endif /* sys/sysmacros.h */
diff --git a/libc/sysdeps/linux/sparc/sys/trap.h b/libc/sysdeps/linux/sparc/sys/trap.h
new file mode 100644
index 000000000..99b9c60e0
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/sys/trap.h
@@ -0,0 +1,7 @@
+/* Include Linux/SPARC specific trap definitions.  */
+#ifndef _SYS_TRAP_H
+#define _SYS_TRAP_H	1
+
+#include <asm/traps.h>
+
+#endif /* sys/trap.h */
diff --git a/libc/sysdeps/linux/sparc/sys/ucontext.h b/libc/sysdeps/linux/sparc/sys/ucontext.h
new file mode 100644
index 000000000..b1102b04c
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/sys/ucontext.h
@@ -0,0 +1,270 @@
+/* Copyright (C) 1998, 1999 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>
+#include <bits/wordsize.h>
+
+#if __WORDSIZE == 64
+
+#define MC_TSTATE	0
+#define MC_PC		1
+#define MC_NPC		2
+#define MC_Y		3
+#define MC_G1		4
+#define MC_G2		5
+#define MC_G3		6
+#define MC_G4		7
+#define MC_G5		8
+#define MC_G6		9
+#define MC_G7		10
+#define MC_O0		11
+#define MC_O1		12
+#define MC_O2		13
+#define MC_O3		14
+#define MC_O4		15
+#define MC_O5		16
+#define MC_O6		17
+#define MC_O7		18
+#define MC_NGREG	19
+
+typedef unsigned long mc_greg_t;
+typedef mc_greg_t mc_gregset_t[MC_NGREG];
+
+#define MC_MAXFPQ	16
+struct mc_fq {
+	unsigned long	*mcfq_addr;
+	unsigned int	mcfq_insn;
+};
+
+struct mc_fpu {
+	union {
+		unsigned int	sregs[32];
+		unsigned long	dregs[32];
+		long double	qregs[16];
+	} mcfpu_fregs;
+	unsigned long	mcfpu_fsr;
+	unsigned long	mcfpu_fprs;
+	unsigned long	mcfpu_gsr;
+	struct mc_fq	*mcfpu_fq;
+	unsigned char	mcfpu_qcnt;
+	unsigned char	mcfpu_qentsz;
+	unsigned char	mcfpu_enab;
+};
+typedef struct mc_fpu mc_fpu_t;
+
+typedef struct {
+	mc_gregset_t	mc_gregs;
+	mc_greg_t	mc_fp;
+	mc_greg_t	mc_i7;
+	mc_fpu_t	mc_fpregs;
+} mcontext_t;
+
+typedef struct ucontext {
+	struct ucontext		*uc_link;
+	unsigned long		uc_flags;
+	unsigned long		__uc_sigmask;
+	mcontext_t		uc_mcontext;
+	stack_t			uc_stack;
+	__sigset_t		uc_sigmask;
+} ucontext_t;
+
+#endif /* __WORDISIZE == 64 */
+
+/*
+ * Location of the users' stored registers relative to R0.
+ * Usage is as an index into a gregset_t array or as u.u_ar0[XX].
+ */
+#define REG_PSR (0)
+#define REG_PC  (1)
+#define REG_nPC (2)
+#define REG_Y   (3)
+#define REG_G1  (4)
+#define REG_G2  (5)
+#define REG_G3  (6)
+#define REG_G4  (7)
+#define REG_G5  (8)
+#define REG_G6  (9)
+#define REG_G7  (10)
+#define REG_O0  (11)
+#define REG_O1  (12)
+#define REG_O2  (13)
+#define REG_O3  (14)
+#define REG_O4  (15)
+#define REG_O5  (16)
+#define REG_O6  (17)
+#define REG_O7  (18)
+
+/*
+ * A gregset_t is defined as an array type for compatibility with the reference
+ * source. This is important due to differences in the way the C language
+ * treats arrays and structures as parameters.
+ *
+ * Note that NGREG is really (sizeof (struct regs) / sizeof (greg_t)),
+ * but that the ABI defines it absolutely to be 21 (resp. 19).
+ */
+
+#if __WORDSIZE == 64
+
+#define REG_ASI	(19)
+#define REG_FPRS (20)
+
+#define NGREG   21
+typedef long greg_t;
+
+#else /* __WORDSIZE == 32 */
+
+#define NGREG   19
+typedef int greg_t;
+
+#endif /* __WORDSIZE == 32 */
+
+typedef greg_t  gregset_t[NGREG];
+
+/*
+ * The following structures define how a register window can appear on the
+ * stack. This structure is available (when required) through the `gwins'
+ * field of an mcontext (nested within ucontext). SPARC_MAXWINDOW is the
+ * maximum number of outstanding regiters window defined in the SPARC
+ * architecture (*not* implementation).
+ */
+#define SPARC_MAXREGWINDOW	31	/* max windows in SPARC arch. */
+struct  rwindow
+  {
+    greg_t rw_local[8];			/* locals */
+    greg_t rw_in[8];			/* ins */
+  };
+
+#define rw_fp   rw_in[6]		/* frame pointer */
+#define rw_rtn  rw_in[7]		/* return address */
+
+typedef struct gwindows
+  {
+    int            wbcnt;
+    int           *spbuf[SPARC_MAXREGWINDOW];
+    struct rwindow wbuf[SPARC_MAXREGWINDOW];
+  } gwindows_t;
+
+/*
+ * Floating point definitions.
+ */
+
+#define MAXFPQ	16	/* max # of fpu queue entries currently supported */
+
+/*
+ * struct fq defines the minimal format of a floating point instruction queue
+ * entry. The size of entries in the floating point queue are implementation
+ * dependent. The union FQu is guarenteed to be the first field in any ABI
+ * conformant system implementation. Any additional fields provided by an
+ * implementation should not be used applications designed to be ABI conformant. */
+
+struct fpq
+  {
+    unsigned long *fpq_addr;		/* address */
+    unsigned long fpq_instr;		/* instruction */
+  };
+
+struct fq
+  {
+    union				/* FPU inst/addr queue */
+      {
+        double whole;
+        struct fpq fpq;
+      } FQu;
+  };
+
+#define FPU_REGS_TYPE           unsigned
+#define FPU_DREGS_TYPE          unsigned long long
+#define V7_FPU_FSR_TYPE         unsigned
+#define V9_FPU_FSR_TYPE         unsigned long long
+#define V9_FPU_FPRS_TYPE        unsigned
+
+#if __WORDSIZE == 64
+
+typedef struct fpu
+  {
+    union {				/* FPU floating point regs */
+      unsigned		fpu_regs[32];	/* 32 singles */
+      double            fpu_dregs[16];	/* 32 doubles */
+      long double	fpu_qregs[16];  /* 16 quads */
+    } fpu_fr;
+    struct fq       *fpu_q;		/* ptr to array of FQ entries */
+    unsigned long   fpu_fsr;		/* FPU status register */
+    unsigned char   fpu_qcnt;		/* # of entries in saved FQ */
+    unsigned char   fpu_q_entrysize;	/* # of bytes per FQ entry */
+    unsigned char   fpu_en;		/* flag signifying fpu in use */
+  } fpregset_t;
+
+#else /* __WORDSIZE == 32 */
+
+typedef struct fpu
+  {
+    union {				/* FPU floating point regs */
+      unsigned long long fpu_regs[32];	/* 32 singles */
+      double             fpu_dregs[16];	/* 16 doubles */
+    } fpu_fr;
+    struct fq       *fpu_q;		/* ptr to array of FQ entries */
+    unsigned        fpu_fsr;		/* FPU status register */
+    unsigned char   fpu_qcnt;		/* # of entries in saved FQ */
+    unsigned char   fpu_q_entrysize;	/* # of bytes per FQ entry */
+    unsigned char   fpu_en;		/* flag signifying fpu in use */
+  } fpregset_t;
+
+/*
+ * The following structure is for associating extra register state with
+ * the ucontext structure and is kept within the uc_mcontext filler area.
+ *
+ * If (xrs_id == XRS_ID) then the xrs_ptr field is a valid pointer to
+ * extra register state. The exact format of the extra register state
+ * pointed to by xrs_ptr is platform-dependent.
+ *
+ * Note: a platform may or may not manage extra register state.
+ */
+typedef struct
+  {
+    unsigned int xrs_id;		/* indicates xrs_ptr validity */
+    void *       xrs_ptr;		/* ptr to extra reg state */
+  } xrs_t;
+
+#define XRS_ID	0x78727300		/* the string "xrs" */
+
+typedef struct
+  {
+    gregset_t   gregs;		/* general register set */
+    gwindows_t  *gwins;		/* POSSIBLE pointer to register windows */
+    fpregset_t  fpregs;		/* floating point register set */
+    xrs_t       xrs;		/* POSSIBLE extra register state association */
+    long        filler[19];
+  } mcontext_t;
+
+
+/* Userlevel context.  */
+typedef struct ucontext
+  {
+    unsigned long   uc_flags;
+    struct ucontext *uc_link;
+    __sigset_t	    uc_sigmask;
+    stack_t         uc_stack;
+    mcontext_t      uc_mcontext;
+  } ucontext_t;
+
+#endif /* __WORDSIZE == 32 */
+#endif /* sys/ucontext.h */