Convert machine/elf.h, machine/frame.h, machine/sigframe.h,

machine/signal.h and machine/ucontext.h into common x86 includes,
copying from amd64 and merging with i386.

Kernel-only compat definitions are kept in the i386/include/sigframe.h
and i386/include/signal.h, to reduce amd64 kernel namespace pollution.
The amd64 compat uses its own definitions so far.

The _MACHINE_ELF_WANT_32BIT definition is to allow the
sys/boot/userboot/userboot/elf32_freebsd.c to use i386 ELF definitions
on the amd64 compile host.  The same hack could be usefully abused by
other code too.

1 files changed, 215 insertions, 0 deletions

diff --git a/sys/x86/include/elf.h b/sys/x86/include/elf.h
new file mode 100644
index 0000000..cde395b
--- /dev/null
+++ b/sys/x86/include/elf.h
@@ -0,0 +1,215 @@
+/*-
+ * Copyright (c) 1996-1997 John D. Polstra.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _MACHINE_ELF_H_
+#define	_MACHINE_ELF_H_ 1
+
+#if defined(__i386__) || defined(_MACHINE_ELF_WANT_32BIT)
+
+/*
+ * ELF definitions for the i386 architecture.
+ */
+
+#include <sys/elf32.h>	/* Definitions common to all 32 bit architectures. */
+#if defined(__ELF_WORD_SIZE) && __ELF_WORD_SIZE == 64
+#include <sys/elf64.h>	/* Definitions common to all 64 bit architectures. */
+#endif
+
+#ifndef __ELF_WORD_SIZE
+#define	__ELF_WORD_SIZE	32	/* Used by <sys/elf_generic.h> */
+#endif
+
+#include <sys/elf_generic.h>
+
+#define	ELF_ARCH	EM_386
+
+#define	ELF_MACHINE_OK(x) ((x) == EM_386 || (x) == EM_486)
+
+/*
+ * Auxiliary vector entries for passing information to the interpreter.
+ *
+ * The i386 supplement to the SVR4 ABI specification names this "auxv_t",
+ * but POSIX lays claim to all symbols ending with "_t".
+ */
+
+typedef struct {	/* Auxiliary vector entry on initial stack */
+	int	a_type;			/* Entry type. */
+	union {
+		long	a_val;		/* Integer value. */
+		void	*a_ptr;		/* Address. */
+		void	(*a_fcn)(void);	/* Function pointer (not used). */
+	} a_un;
+} Elf32_Auxinfo;
+
+#if __ELF_WORD_SIZE == 64
+/* Fake for amd64 loader support */
+typedef struct {
+	int fake;
+} Elf64_Auxinfo;
+#endif
+
+__ElfType(Auxinfo);
+
+/* Values for a_type. */
+#define	AT_NULL		0	/* Terminates the vector. */
+#define	AT_IGNORE	1	/* Ignored entry. */
+#define	AT_EXECFD	2	/* File descriptor of program to load. */
+#define	AT_PHDR		3	/* Program header of program already loaded. */
+#define	AT_PHENT	4	/* Size of each program header entry. */
+#define	AT_PHNUM	5	/* Number of program header entries. */
+#define	AT_PAGESZ	6	/* Page size in bytes. */
+#define	AT_BASE		7	/* Interpreter's base address. */
+#define	AT_FLAGS	8	/* Flags (unused for i386). */
+#define	AT_ENTRY	9	/* Where interpreter should transfer control. */
+#define	AT_NOTELF	10	/* Program is not ELF ?? */
+#define	AT_UID		11	/* Real uid. */
+#define	AT_EUID		12	/* Effective uid. */
+#define	AT_GID		13	/* Real gid. */
+#define	AT_EGID		14	/* Effective gid. */
+#define	AT_EXECPATH	15	/* Path to the executable. */
+#define	AT_CANARY	16	/* Canary for SSP. */
+#define	AT_CANARYLEN	17	/* Length of the canary. */
+#define	AT_OSRELDATE	18	/* OSRELDATE. */
+#define	AT_NCPUS	19	/* Number of CPUs. */
+#define	AT_PAGESIZES	20	/* Pagesizes. */
+#define	AT_PAGESIZESLEN	21	/* Number of pagesizes. */
+#define	AT_TIMEKEEP	22	/* Pointer to timehands. */
+#define	AT_STACKPROT	23	/* Initial stack protection. */
+
+#define	AT_COUNT	24	/* Count of defined aux entry types. */
+
+/*
+ * Relocation types.
+ */
+
+#define	R_386_COUNT	38	/* Count of defined relocation types. */
+
+/* Define "machine" characteristics */
+#define	ELF_TARG_CLASS	ELFCLASS32
+#define	ELF_TARG_DATA	ELFDATA2LSB
+#define	ELF_TARG_MACH	EM_386
+#define	ELF_TARG_VER	1
+
+#define	ET_DYN_LOAD_ADDR 0x01001000
+
+#elif defined(__amd64__)
+
+/*
+ * ELF definitions for the AMD64 architecture.
+ */
+
+#ifndef __ELF_WORD_SIZE
+#define	__ELF_WORD_SIZE	64	/* Used by <sys/elf_generic.h> */
+#endif
+#include <sys/elf32.h>	/* Definitions common to all 32 bit architectures. */
+#include <sys/elf64.h>	/* Definitions common to all 64 bit architectures. */
+#include <sys/elf_generic.h>
+
+#define	ELF_ARCH	EM_X86_64
+#define	ELF_ARCH32	EM_386
+
+#define	ELF_MACHINE_OK(x) ((x) == EM_X86_64)
+
+/*
+ * Auxiliary vector entries for passing information to the interpreter.
+ *
+ * The i386 supplement to the SVR4 ABI specification names this "auxv_t",
+ * but POSIX lays claim to all symbols ending with "_t".
+ */
+typedef struct {	/* Auxiliary vector entry on initial stack */
+	int	a_type;			/* Entry type. */
+	union {
+		int	a_val;		/* Integer value. */
+	} a_un;
+} Elf32_Auxinfo;
+
+
+typedef struct {	/* Auxiliary vector entry on initial stack */
+	long	a_type;			/* Entry type. */
+	union {
+		long	a_val;		/* Integer value. */
+		void	*a_ptr;		/* Address. */
+		void	(*a_fcn)(void);	/* Function pointer (not used). */
+	} a_un;
+} Elf64_Auxinfo;
+
+__ElfType(Auxinfo);
+
+/* Values for a_type. */
+#define	AT_NULL		0	/* Terminates the vector. */
+#define	AT_IGNORE	1	/* Ignored entry. */
+#define	AT_EXECFD	2	/* File descriptor of program to load. */
+#define	AT_PHDR		3	/* Program header of program already loaded. */
+#define	AT_PHENT	4	/* Size of each program header entry. */
+#define	AT_PHNUM	5	/* Number of program header entries. */
+#define	AT_PAGESZ	6	/* Page size in bytes. */
+#define	AT_BASE		7	/* Interpreter's base address. */
+#define	AT_FLAGS	8	/* Flags (unused for i386). */
+#define	AT_ENTRY	9	/* Where interpreter should transfer control. */
+#define	AT_NOTELF	10	/* Program is not ELF ?? */
+#define	AT_UID		11	/* Real uid. */
+#define	AT_EUID		12	/* Effective uid. */
+#define	AT_GID		13	/* Real gid. */
+#define	AT_EGID		14	/* Effective gid. */
+#define	AT_EXECPATH	15	/* Path to the executable. */
+#define	AT_CANARY	16	/* Canary for SSP */
+#define	AT_CANARYLEN	17	/* Length of the canary. */
+#define	AT_OSRELDATE	18	/* OSRELDATE. */
+#define	AT_NCPUS	19	/* Number of CPUs. */
+#define	AT_PAGESIZES	20	/* Pagesizes. */
+#define	AT_PAGESIZESLEN	21	/* Number of pagesizes. */
+#define	AT_TIMEKEEP	22	/* Pointer to timehands. */
+#define	AT_STACKPROT	23	/* Initial stack protection. */
+
+#define	AT_COUNT	24	/* Count of defined aux entry types. */
+
+/*
+ * Relocation types.
+ */
+
+#define	R_X86_64_COUNT	24	/* Count of defined relocation types. */
+
+/* Define "machine" characteristics */
+#if __ELF_WORD_SIZE == 32
+#define ELF_TARG_CLASS  ELFCLASS32
+#else
+#define ELF_TARG_CLASS  ELFCLASS64
+#endif
+#define	ELF_TARG_DATA	ELFDATA2LSB
+#define	ELF_TARG_MACH	EM_X86_64
+#define	ELF_TARG_VER	1
+
+#if __ELF_WORD_SIZE == 32
+#define	ET_DYN_LOAD_ADDR 0x01001000
+#else
+#define	ET_DYN_LOAD_ADDR 0x01021000
+#endif
+
+#endif /* __i386__, __amd64__ */
+
+#endif /* !_MACHINE_ELF_H_ */