kgzip is a kzip(8) replacement able to compress and link bootable

32-bit binaries in both ELF and a.out format.

Development sponsored by Global Technology Associates, Inc.

Reviewed/tested by: abial

1 files changed, 163 insertions, 0 deletions

diff --git a/usr.sbin/kgzip/elfhdr.c b/usr.sbin/kgzip/elfhdr.c
new file mode 100644
index 0000000..61bf443
--- /dev/null
+++ b/usr.sbin/kgzip/elfhdr.c
@@ -0,0 +1,163 @@
+/*
+ * Copyright (c) 1999 Global Technology Associates, Inc.
+ * 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.
+ *
+ *	$Id:$
+ */
+
+#include <stddef.h>
+#include "elfhdr.h"
+
+#define KGZ_FIX_NSIZE	0	/* Run-time fixup */
+
+/*
+ * Relocatable header template.
+ */
+const struct kgz_elfhdr elfhdr = {
+    /* ELF header */
+    {
+	{
+	    ELFMAG0, ELFMAG1, ELFMAG2, ELFMAG3, 	/* e_ident */
+	    ELFCLASS32, ELFDATA2LSB, EV_CURRENT, 0,
+	    'F', 'r', 'e', 'e', 'B', 'S', 'D', 0
+	},
+	ET_EXEC,					/* e_type */
+	EM_386, 					/* e_machine */
+	EV_CURRENT,					/* e_version */
+	0,						/* e_entry */
+	0,						/* e_phoff */
+	offsetof(struct kgz_elfhdr, sh),		/* e_shoff */
+	0,						/* e_flags */
+	sizeof(Elf32_Ehdr),				/* e_ehsize */
+	0,						/* e_phentsize */
+	0,						/* e_phnum */
+	sizeof(Elf32_Shdr),				/* e_shentsize */
+	KGZ_SHNUM,					/* e_shnum */
+	KGZ_SH_SHSTRTAB 				/* e_shstrndx */
+    },
+    /* Section header */
+    {
+	{
+	    0,						/* sh_name */
+	    SHT_NULL,					/* sh_type */
+	    0,						/* sh_flags */
+	    0,						/* sh_addr */
+	    0,						/* sh_offset */
+	    0,						/* sh_size */
+	    SHN_UNDEF,					/* sh_link */
+	    0,						/* sh_info */
+	    0,						/* sh_addralign */
+	    0						/* sh_entsize */
+	},
+	{
+	    offsetof(struct kgz_shstrtab, symtab),	/* sh_name */
+	    SHT_SYMTAB, 				/* sh_type */
+	    0,						/* sh_flags */
+	    0,						/* sh_addr */
+	    offsetof(struct kgz_elfhdr, st),		/* sh_offset */
+	    sizeof(Elf32_Sym) * KGZ_STNUM,		/* sh_size */
+	    KGZ_SH_STRTAB,				/* sh_link */
+	    1,						/* sh_info */
+	    4,						/* sh_addralign */
+	    sizeof(Elf32_Sym)				/* sh_entsize */
+	},
+	{
+	    offsetof(struct kgz_shstrtab, shstrtab),	/* sh_name */
+	    SHT_STRTAB, 				/* sh_type */
+	    0,						/* sh_flags */
+	    0,						/* sh_addr */
+	    offsetof(struct kgz_elfhdr, shstrtab),	/* sh_offset */
+	    sizeof(struct kgz_shstrtab),		/* sh_size */
+	    SHN_UNDEF,					/* sh_link */
+	    0,						/* sh_info */
+	    1,						/* sh_addralign */
+	    0						/* sh_entsize */
+	},
+	{
+	    offsetof(struct kgz_shstrtab, strtab),	/* sh_name */
+	    SHT_STRTAB, 				/* sh_type */
+	    0,						/* sh_flags */
+	    0,						/* sh_addr */
+	    offsetof(struct kgz_elfhdr, strtab),	/* sh_offset */
+	    sizeof(struct kgz_strtab),			/* sh_size */
+	    SHN_UNDEF,					/* sh_link */
+	    0,						/* sh_info */
+	    1,						/* sh_addralign */
+	    0						/* sh_entsize */
+	},
+	{
+	    offsetof(struct kgz_shstrtab, data),	/* sh_name */
+	    SHT_PROGBITS,				/* sh_type */
+	    SHF_ALLOC | SHF_WRITE,			/* sh_flags */
+	    0,						/* sh_addr */
+	    sizeof(struct kgz_elfhdr),			/* sh_offset */
+	    sizeof(struct kgz_hdr) + KGZ_FIX_NSIZE,	/* sh_size */
+	    SHN_UNDEF,					/* sh_link */
+	    0,						/* sh_info */
+	    4,						/* sh_addralign */
+	    0						/* sh_entsize */
+	}
+    },
+    /* Symbol table */
+    {
+	{
+	    0,						/* st_name */
+	    0,						/* st_value */
+	    0,						/* st_size */
+	    0,						/* st_info */
+	    0,						/* st_other */
+	    SHN_UNDEF					/* st_shndx */
+	},
+	{
+	    offsetof(struct kgz_strtab, kgz),		/* st_name */
+	    0,						/* st_value */
+	    sizeof(struct kgz_hdr),			/* st_size */
+	    ELF32_ST_INFO(STB_GLOBAL, STT_OBJECT),	/* st_info */
+	    0,						/* st_other */
+	    KGZ_SH_DATA 				/* st_shndx */
+	},
+	{
+	    offsetof(struct kgz_strtab, kgz_ndata),	/* st_name */
+	    sizeof(struct kgz_hdr),			/* st_value */
+	    KGZ_FIX_NSIZE,				/* st_size */
+	    ELF32_ST_INFO(STB_GLOBAL, STT_OBJECT),	/* st_info */
+	    0,						/* st_other */
+	    KGZ_SH_DATA 				/* st_shndx */
+	}
+    },
+    /* Section header string table */
+    {
+	KGZ_SHSTR_ZERO, 				/* zero */
+	KGZ_SHSTR_SYMTAB,				/* symtab */
+	KGZ_SHSTR_SHSTRTAB,				/* shstrtab */
+	KGZ_SHSTR_STRTAB,				/* strtab */
+	KGZ_SHSTR_DATA					/* data */
+    },
+    /* String table */
+    {
+	KGZ_STR_ZERO,					/* zero */
+	KGZ_STR_KGZ,					/* kgz */
+	KGZ_STR_KGZ_NDATA				/* kgz_ndata */
+    }
+};