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-rw-r--r--libc/sysdeps/linux/x86_64/sys/debugreg.h88
-rw-r--r--libc/sysdeps/linux/x86_64/sys/io.h181
-rw-r--r--libc/sysdeps/linux/x86_64/sys/perm.h36
-rw-r--r--libc/sysdeps/linux/x86_64/sys/procfs.h143
-rw-r--r--libc/sysdeps/linux/x86_64/sys/reg.h79
-rw-r--r--libc/sysdeps/linux/x86_64/sys/ucontext.h248
-rw-r--r--libc/sysdeps/linux/x86_64/sys/user.h176
7 files changed, 951 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/x86_64/sys/debugreg.h b/libc/sysdeps/linux/x86_64/sys/debugreg.h
new file mode 100644
index 000000000..8abbf7546
--- /dev/null
+++ b/libc/sysdeps/linux/x86_64/sys/debugreg.h
@@ -0,0 +1,88 @@
+/* Copyright (C) 2001, 2003 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_DEBUGREG_H
+#define _SYS_DEBUGREG_H 1
+#include <bits/wordsize.h>
+
+/* Indicate the register numbers for a number of the specific
+ debug registers. Registers 0-3 contain the addresses we wish to trap on */
+#define DR_FIRSTADDR 0 /* u_debugreg[DR_FIRSTADDR] */
+#define DR_LASTADDR 3 /* u_debugreg[DR_LASTADDR] */
+
+#define DR_STATUS 6 /* u_debugreg[DR_STATUS] */
+#define DR_CONTROL 7 /* u_debugreg[DR_CONTROL] */
+
+/* Define a few things for the status register. We can use this to determine
+ which debugging register was responsible for the trap. The other bits
+ are either reserved or not of interest to us. */
+
+#define DR_TRAP0 (0x1) /* db0 */
+#define DR_TRAP1 (0x2) /* db1 */
+#define DR_TRAP2 (0x4) /* db2 */
+#define DR_TRAP3 (0x8) /* db3 */
+
+#define DR_STEP (0x4000) /* single-step */
+#define DR_SWITCH (0x8000) /* task switch */
+
+/* Now define a bunch of things for manipulating the control register.
+ The top two bytes of the control register consist of 4 fields of 4
+ bits - each field corresponds to one of the four debug registers,
+ and indicates what types of access we trap on, and how large the data
+ field is that we are looking at */
+
+#define DR_CONTROL_SHIFT 16 /* Skip this many bits in ctl register */
+#define DR_CONTROL_SIZE 4 /* 4 control bits per register */
+
+#define DR_RW_EXECUTE (0x0) /* Settings for the access types to trap on */
+#define DR_RW_WRITE (0x1)
+#define DR_RW_READ (0x3)
+
+#define DR_LEN_1 (0x0) /* Settings for data length to trap on */
+#define DR_LEN_2 (0x4)
+#define DR_LEN_4 (0xC)
+#define DR_LEN_8 (0x8)
+
+/* The low byte to the control register determine which registers are
+ enabled. There are 4 fields of two bits. One bit is "local", meaning
+ that the processor will reset the bit after a task switch and the other
+ is global meaning that we have to explicitly reset the bit. With linux,
+ you can use either one, since we explicitly zero the register when we enter
+ kernel mode. */
+
+#define DR_LOCAL_ENABLE_SHIFT 0 /* Extra shift to the local enable bit */
+#define DR_GLOBAL_ENABLE_SHIFT 1 /* Extra shift to the global enable bit */
+#define DR_ENABLE_SIZE 2 /* 2 enable bits per register */
+
+#define DR_LOCAL_ENABLE_MASK (0x55) /* Set local bits for all 4 regs */
+#define DR_GLOBAL_ENABLE_MASK (0xAA) /* Set global bits for all 4 regs */
+
+/* The second byte to the control register has a few special
+ things. */
+
+
+
+#if __WORDSIZE == 64
+# define DR_CONTROL_RESERVED (0xFFFFFFFF0000FC00UL) /* Reserved */
+#else
+# define DR_CONTROL_RESERVED (0x00FC00U) /* Reserved */
+#endif
+#define DR_LOCAL_SLOWDOWN (0x100) /* Local slow the pipeline */
+#define DR_GLOBAL_SLOWDOWN (0x200) /* Global slow the pipeline */
+
+#endif /* sys/debugreg.h */
diff --git a/libc/sysdeps/linux/x86_64/sys/io.h b/libc/sysdeps/linux/x86_64/sys/io.h
new file mode 100644
index 000000000..802a0dfb4
--- /dev/null
+++ b/libc/sysdeps/linux/x86_64/sys/io.h
@@ -0,0 +1,181 @@
+/* Copyright (C) 1996, 2000, 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_IO_H
+#define _SYS_IO_H 1
+
+#include <features.h>
+
+__BEGIN_DECLS
+
+/* If TURN_ON is TRUE, request for permission to do direct i/o on the
+ port numbers in the range [FROM,FROM+NUM-1]. Otherwise, turn I/O
+ permission off for that range. This call requires root privileges.
+
+ Portability note: not all Linux platforms support this call. Most
+ platforms based on the PC I/O architecture probably will, however.
+ E.g., Linux/Alpha for Alpha PCs supports this. */
+extern int ioperm (unsigned long int __from, unsigned long int __num,
+ int __turn_on) __THROW;
+
+/* Set the I/O privilege level to LEVEL. If LEVEL>3, permission to
+ access any I/O port is granted. This call requires root
+ privileges. */
+extern int iopl (int __level) __THROW;
+
+#if defined __GNUC__ && __GNUC__ >= 2
+
+static __inline unsigned char
+inb (unsigned short int port)
+{
+ unsigned char _v;
+
+ __asm__ __volatile__ ("inb %w1,%0":"=a" (_v):"Nd" (port));
+ return _v;
+}
+
+static __inline unsigned char
+inb_p (unsigned short int port)
+{
+ unsigned char _v;
+
+ __asm__ __volatile__ ("inb %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (port));
+ return _v;
+}
+
+static __inline unsigned short int
+inw (unsigned short int port)
+{
+ unsigned short _v;
+
+ __asm__ __volatile__ ("inw %w1,%0":"=a" (_v):"Nd" (port));
+ return _v;
+}
+
+static __inline unsigned short int
+inw_p (unsigned short int port)
+{
+ unsigned short int _v;
+
+ __asm__ __volatile__ ("inw %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (port));
+ return _v;
+}
+
+static __inline unsigned int
+inl (unsigned short int port)
+{
+ unsigned int _v;
+
+ __asm__ __volatile__ ("inl %w1,%0":"=a" (_v):"Nd" (port));
+ return _v;
+}
+
+static __inline unsigned int
+inl_p (unsigned short int port)
+{
+ unsigned int _v;
+ __asm__ __volatile__ ("inl %w1,%0\noutb %%al,$0x80":"=a" (_v):"Nd" (port));
+ return _v;
+}
+
+static __inline void
+outb (unsigned char value, unsigned short int port)
+{
+ __asm__ __volatile__ ("outb %b0,%w1": :"a" (value), "Nd" (port));
+}
+
+static __inline void
+outb_p (unsigned char value, unsigned short int port)
+{
+ __asm__ __volatile__ ("outb %b0,%w1\noutb %%al,$0x80": :"a" (value),
+ "Nd" (port));
+}
+
+static __inline void
+outw (unsigned short int value, unsigned short int port)
+{
+ __asm__ __volatile__ ("outw %w0,%w1": :"a" (value), "Nd" (port));
+
+}
+
+static __inline void
+outw_p (unsigned short int value, unsigned short int port)
+{
+ __asm__ __volatile__ ("outw %w0,%w1\noutb %%al,$0x80": :"a" (value),
+ "Nd" (port));
+}
+
+static __inline void
+outl (unsigned int value, unsigned short int port)
+{
+ __asm__ __volatile__ ("outl %0,%w1": :"a" (value), "Nd" (port));
+}
+
+static __inline void
+outl_p (unsigned int value, unsigned short int port)
+{
+ __asm__ __volatile__ ("outl %0,%w1\noutb %%al,$0x80": :"a" (value),
+ "Nd" (port));
+}
+
+static __inline void
+insb (unsigned short int port, void *addr, unsigned long int count)
+{
+ __asm__ __volatile__ ("cld ; rep ; insb":"=D" (addr),
+ "=c" (count):"d" (port), "0" (addr), "1" (count));
+}
+
+static __inline void
+insw (unsigned short int port, void *addr, unsigned long int count)
+{
+ __asm__ __volatile__ ("cld ; rep ; insw":"=D" (addr),
+ "=c" (count):"d" (port), "0" (addr), "1" (count));
+}
+
+static __inline void
+insl (unsigned short int port, void *addr, unsigned long int count)
+{
+ __asm__ __volatile__ ("cld ; rep ; insl":"=D" (addr),
+ "=c" (count):"d" (port), "0" (addr), "1" (count));
+}
+
+static __inline void
+outsb (unsigned short int port, const void *addr, unsigned long int count)
+{
+ __asm__ __volatile__ ("cld ; rep ; outsb":"=S" (addr),
+ "=c" (count):"d" (port), "0" (addr), "1" (count));
+}
+
+static __inline void
+outsw (unsigned short int port, const void *addr, unsigned long int count)
+{
+ __asm__ __volatile__ ("cld ; rep ; outsw":"=S" (addr),
+ "=c" (count):"d" (port), "0" (addr), "1" (count));
+}
+
+static __inline void
+outsl (unsigned short int port, const void *addr, unsigned long int count)
+{
+ __asm__ __volatile__ ("cld ; rep ; outsl":"=S" (addr),
+ "=c" (count):"d" (port), "0" (addr), "1" (count));
+}
+
+#endif /* GNU C */
+
+__END_DECLS
+#endif /* _SYS_IO_H */
diff --git a/libc/sysdeps/linux/x86_64/sys/perm.h b/libc/sysdeps/linux/x86_64/sys/perm.h
new file mode 100644
index 000000000..382fa92ee
--- /dev/null
+++ b/libc/sysdeps/linux/x86_64/sys/perm.h
@@ -0,0 +1,36 @@
+/* Copyright (C) 1996, 1999, 2001 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_PERM_H
+
+#define _SYS_PERM_H 1
+#include <features.h>
+
+__BEGIN_DECLS
+
+/* Set port input/output permissions. */
+extern int ioperm (unsigned long int __from, unsigned long int __num,
+ int __turn_on) __THROW;
+
+
+/* Change I/O privilege level. */
+extern int iopl (int __level) __THROW;
+
+__END_DECLS
+
+#endif /* _SYS_PERM_H */
diff --git a/libc/sysdeps/linux/x86_64/sys/procfs.h b/libc/sysdeps/linux/x86_64/sys/procfs.h
new file mode 100644
index 000000000..5995b7115
--- /dev/null
+++ b/libc/sysdeps/linux/x86_64/sys/procfs.h
@@ -0,0 +1,143 @@
+/* Copyright (C) 2001, 2004 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>
+#include <sys/user.h>
+#include <bits/wordsize.h>
+
+__BEGIN_DECLS
+
+/* Type for a general-purpose register. */
+typedef unsigned long elf_greg_t;
+
+/* And the whole bunch of them. We could have used `struct
+ user_regs_struct' directly in the typedef, but tradition says that
+ the register set is an array, which does have some peculiar
+ semantics, so leave it that way. */
+#define ELF_NGREG (sizeof (struct user_regs_struct) / sizeof(elf_greg_t))
+typedef elf_greg_t elf_gregset_t[ELF_NGREG];
+
+#if __WORDSIZE == 32
+/* Register set for the floating-point registers. */
+typedef struct user_fpregs_struct elf_fpregset_t;
+
+/* Register set for the extended floating-point registers. Includes
+ the Pentium III SSE registers in addition to the classic
+ floating-point stuff. */
+typedef struct user_fpxregs_struct elf_fpxregset_t;
+#else
+/* Register set for the extended floating-point registers. Includes
+ the Pentium III SSE registers in addition to the classic
+ floating-point stuff. */
+typedef struct user_fpregs_struct elf_fpregset_t;
+#endif
+
+/* Signal info. */
+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. */
+
+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 == 32
+ unsigned short int pr_uid;
+ unsigned short int pr_gid;
+#else
+ unsigned int pr_uid;
+ unsigned 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. */
+ };
+
+
+/* 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 __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;
+
+__END_DECLS
+
+#endif /* sys/procfs.h */
diff --git a/libc/sysdeps/linux/x86_64/sys/reg.h b/libc/sysdeps/linux/x86_64/sys/reg.h
new file mode 100644
index 000000000..865e34559
--- /dev/null
+++ b/libc/sysdeps/linux/x86_64/sys/reg.h
@@ -0,0 +1,79 @@
+/* Copyright (C) 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_REG_H
+#define _SYS_REG_H 1
+
+#include <bits/wordsize.h>
+
+#if __WORDSIZE == 64
+/* Index into an array of 8 byte longs returned from ptrace for
+ location of the users' stored general purpose registers. */
+
+# define R15 0
+# define R14 1
+# define R13 2
+# define R12 3
+# define RBP 4
+# define RBX 5
+# define R11 6
+# define R10 7
+# define R9 8
+# define R8 9
+# define RAX 10
+# define RCX 11
+# define RDX 12
+# define RSI 13
+# define RDI 14
+# define ORIG_RAX 15
+# define RIP 16
+# define CS 17
+# define EFLAGS 18
+# define RSP 19
+# define SS 20
+# define FS_BASE 21
+# define GS_BASE 22
+# define DS 23
+# define ES 24
+# define FS 25
+# define GS 26
+#else
+
+/* Index into an array of 4 byte integers returned from ptrace for
+ * location of the users' stored general purpose registers. */
+
+# define EBX 0
+# define ECX 1
+# define EDX 2
+# define ESI 3
+# define EDI 4
+# define EBP 5
+# define EAX 6
+# define DS 7
+# define ES 8
+# define FS 9
+# define GS 10
+# define ORIG_EAX 11
+# define EIP 12
+# define CS 13
+# define EFL 14
+# define UESP 15
+# define SS 16
+#endif
+
+#endif
diff --git a/libc/sysdeps/linux/x86_64/sys/ucontext.h b/libc/sysdeps/linux/x86_64/sys/ucontext.h
new file mode 100644
index 000000000..b59cd292f
--- /dev/null
+++ b/libc/sysdeps/linux/x86_64/sys/ucontext.h
@@ -0,0 +1,248 @@
+/* Copyright (C) 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_UCONTEXT_H
+#define _SYS_UCONTEXT_H 1
+
+#include <features.h>
+#include <signal.h>
+#include <bits/wordsize.h>
+
+/* We need the signal context definitions even if they are not used
+ included in <signal.h>. */
+#include <bits/sigcontext.h>
+
+#if __WORDSIZE == 64
+
+/* Type for general register. */
+typedef long int greg_t;
+
+/* Number of general registers. */
+#define NGREG 23
+
+/* Container for all general registers. */
+typedef greg_t gregset_t[NGREG];
+
+#ifdef __USE_GNU
+/* Number of each register in the `gregset_t' array. */
+enum
+{
+ REG_R8 = 0,
+# define REG_R8 REG_R8
+ REG_R9,
+# define REG_R9 REG_R9
+ REG_R10,
+# define REG_R10 REG_R10
+ REG_R11,
+# define REG_R11 REG_R11
+ REG_R12,
+# define REG_R12 REG_R12
+ REG_R13,
+# define REG_R13 REG_R13
+ REG_R14,
+# define REG_R14 REG_R14
+ REG_R15,
+# define REG_R15 REG_R15
+ REG_RDI,
+# define REG_RDI REG_RDI
+ REG_RSI,
+# define REG_RSI REG_RSI
+ REG_RBP,
+# define REG_RBP REG_RBP
+ REG_RBX,
+# define REG_RBX REG_RBX
+ REG_RDX,
+# define REG_RDX REG_RDX
+ REG_RAX,
+# define REG_RAX REG_RAX
+ REG_RCX,
+# define REG_RCX REG_RCX
+ REG_RSP,
+# define REG_RSP REG_RSP
+ REG_RIP,
+# define REG_RIP REG_RIP
+ REG_EFL,
+# define REG_EFL REG_EFL
+ REG_CSGSFS, /* Actually short cs, gs, fs, __pad0. */
+# define REG_CSGSFS REG_CSGSFS
+ REG_ERR,
+# define REG_ERR REG_ERR
+ REG_TRAPNO,
+# define REG_TRAPNO REG_TRAPNO
+ REG_OLDMASK,
+# define REG_OLDMASK REG_OLDMASK
+ REG_CR2
+# define REG_CR2 REG_CR2
+};
+#endif
+
+struct _libc_fpxreg
+{
+ unsigned short int significand[4];
+ unsigned short int exponent;
+ unsigned short int padding[3];
+};
+
+struct _libc_xmmreg
+{
+ __uint32_t element[4];
+};
+
+struct _libc_fpstate
+{
+ /* 64-bit FXSAVE format. */
+ __uint16_t cwd;
+ __uint16_t swd;
+ __uint16_t ftw;
+ __uint16_t fop;
+ __uint64_t rip;
+ __uint64_t rdp;
+ __uint32_t mxcsr;
+ __uint32_t mxcr_mask;
+ struct _libc_fpxreg _st[8];
+ struct _libc_xmmreg _xmm[16];
+ __uint32_t padding[24];
+};
+
+/* Structure to describe FPU registers. */
+typedef struct _libc_fpstate *fpregset_t;
+
+/* Context to describe whole processor state. */
+typedef struct
+ {
+ gregset_t gregs;
+ /* Note that fpregs is a pointer. */
+ fpregset_t fpregs;
+ unsigned long __reserved1 [8];
+} 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;
+
+#else /* __WORDSIZE == 32 */
+
+/* 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 /* __WORDSIZE == 32 */
+
+#endif /* sys/ucontext.h */
diff --git a/libc/sysdeps/linux/x86_64/sys/user.h b/libc/sysdeps/linux/x86_64/sys/user.h
new file mode 100644
index 000000000..5ff68e575
--- /dev/null
+++ b/libc/sysdeps/linux/x86_64/sys/user.h
@@ -0,0 +1,176 @@
+/* Copyright (C) 2001, 2002, 2004 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_USER_H
+#define _SYS_USER_H 1
+
+/* 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 <bits/wordsize.h>
+
+#if __WORDSIZE == 64
+
+struct user_fpregs_struct
+{
+ __uint16_t cwd;
+ __uint16_t swd;
+ __uint16_t ftw;
+ __uint16_t fop;
+ __uint64_t rip;
+ __uint64_t rdp;
+ __uint32_t mxcsr;
+ __uint32_t mxcr_mask;
+ __uint32_t st_space[32]; /* 8*16 bytes for each FP-reg = 128 bytes */
+ __uint32_t xmm_space[64]; /* 16*16 bytes for each XMM-reg = 256 bytes */
+ __uint32_t padding[24];
+};
+
+struct user_regs_struct
+{
+ unsigned long r15;
+ unsigned long r14;
+ unsigned long r13;
+ unsigned long r12;
+ unsigned long rbp;
+ unsigned long rbx;
+ unsigned long r11;
+ unsigned long r10;
+ unsigned long r9;
+ unsigned long r8;
+ unsigned long rax;
+ unsigned long rcx;
+ unsigned long rdx;
+ unsigned long rsi;
+ unsigned long rdi;
+ unsigned long orig_rax;
+ unsigned long rip;
+ unsigned long cs;
+ unsigned long eflags;
+ unsigned long rsp;
+ unsigned long ss;
+ unsigned long fs_base;
+ unsigned long gs_base;
+ unsigned long ds;
+ unsigned long es;
+ unsigned long fs;
+ unsigned long gs;
+};
+
+struct user
+{
+ struct user_regs_struct regs;
+ int u_fpvalid;
+ struct user_fpregs_struct i387;
+ unsigned long int u_tsize;
+ unsigned long int u_dsize;
+ unsigned long int u_ssize;
+ unsigned long start_code;
+ unsigned long start_stack;
+ long int signal;
+ int reserved;
+ struct user_regs_struct* u_ar0;
+ struct user_fpregs_struct* u_fpstate;
+ unsigned long int magic;
+ char u_comm [32];
+ unsigned long int u_debugreg [8];
+};
+
+#else
+/* These are the 32-bit x86 structures. */
+struct user_fpregs_struct
+{
+ long int cwd;
+ long int swd;
+ long int twd;
+ long int fip;
+ long int fcs;
+ long int foo;
+ long int fos;
+ long int st_space [20];
+};
+
+struct user_fpxregs_struct
+{
+ unsigned short int cwd;
+ unsigned short int swd;
+ unsigned short int twd;
+ unsigned short int fop;
+ long int fip;
+ long int fcs;
+ long int foo;
+ long int fos;
+ long int mxcsr;
+ long int reserved;
+ long int st_space[32]; /* 8*16 bytes for each FP-reg = 128 bytes */
+ long int xmm_space[32]; /* 8*16 bytes for each XMM-reg = 128 bytes */
+ long int padding[56];
+};
+
+struct user_regs_struct
+{
+ long int ebx;
+ long int ecx;
+ long int edx;
+ long int esi;
+ long int edi;
+ long int ebp;
+ long int eax;
+ long int xds;
+ long int xes;
+ long int xfs;
+ long int xgs;
+ long int orig_eax;
+ long int eip;
+ long int xcs;
+ long int eflags;
+ long int esp;
+ long int xss;
+};
+
+struct user
+{
+ struct user_regs_struct regs;
+ int u_fpvalid;
+ struct user_fpregs_struct i387;
+ unsigned long int u_tsize;
+ unsigned long int u_dsize;
+ unsigned long int u_ssize;
+ unsigned long start_code;
+ unsigned long start_stack;
+ long int signal;
+ int reserved;
+ struct user_regs_struct* u_ar0;
+ struct user_fpregs_struct* u_fpstate;
+ unsigned long int magic;
+ char u_comm [32];
+ int u_debugreg [8];
+};
+#endif /* __WORDSIZE */
+
+#include <bits/uClibc_page.h>
+#define PAGE_SHIFT 12
+#define PAGE_SIZE (1UL << PAGE_SHIFT)
+#define PAGE_MASK (~(PAGE_SIZE-1))
+#define NBPG PAGE_SIZE
+#define UPAGES 1
+#define HOST_TEXT_START_ADDR (u.start_code)
+#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
+
+#endif /* _SYS_USER_H */