(2006-08-06) rescue-bootcd

extra/syslinux-3.09/sample/Makefile

@@ -0,0 +1,77 @@
+#ident "$Id: Makefile,v 1.23 2005/01/03 08:23:16 hpa Exp $"
+## -----------------------------------------------------------------------
+##   
+##   Copyright 2001-2004 H. Peter Anvin - All Rights Reserved
+##
+##   This program is free software; you can redistribute it and/or modify
+##   it under the terms of the GNU General Public License as published by
+##   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
+##   Boston MA 02111-1307, USA; either version 2 of the License, or
+##   (at your option) any later version; incorporated herein by reference.
+##
+## -----------------------------------------------------------------------
+
+##
+## samples for syslinux users
+##
+
+gcc_ok   = $(shell if gcc $(1) -c -x c /dev/null -o /dev/null 2>/dev/null; \
+	           then echo $(1); else echo $(2); fi)
+
+M32       := $(call gcc_ok,-m32,) $(call gcc_ok,-ffreestanding,)
+
+CC         = gcc $(M32)
+LD         = ld -m elf_i386
+AR	   = ar
+NASM	   = nasm
+RANLIB	   = ranlib
+CFLAGS     = -W -Wall -march=i386 -Os -fomit-frame-pointer -I../com32/include
+SFLAGS     = -march=i386
+LDFLAGS    = -s
+OBJCOPY    = objcopy
+PPMTOLSS16 = 	../ppmtolss16
+LIB	   = liboldcom32.a
+
+LIBOBJS	   = conio.o atou.o skipatou.o printf.o c32exit.o
+
+.SUFFIXES: .lss .c .o .elf .c32
+
+all: syslogo.lss comecho.com hello.c32 hello2.c32 filetest.c32 c32echo.c32 \
+     fd.c32 $(LIB)
+
+.PRECIOUS: %.o
+%.o: %.S
+	$(CC) $(SFLAGS) -c -o $@ $<
+
+.PRECIOUS: %.o
+%.o: %.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+.PRECIOUS: %.elf
+%.elf: c32entry.o %.o $(LIB)
+	$(LD) -Ttext 0x101000 -e _start -o $@ $^
+
+%.c32: %.elf
+	$(OBJCOPY) -O binary $< $@
+
+%.com: %.asm
+	$(NASM) -f bin -o $@ -l $*.lst $<
+
+$(LIB): $(LIBOBJS)
+	rm -f $@
+	$(AR) cq $@ $^
+	$(RANLIB) $@
+
+syslogo.lss:	syslogo.png $(PPMTOLSS16)
+	pngtopnm syslogo.png | \
+		$(PPMTOLSS16) \#000000=0 \#d0d0d0=7 \#f6f6f6=15	\
+		> syslogo.lss
+
+tidy:
+	rm -f *.o *.a *.lst *.elf
+
+# Don't specify *.com since mdiskchk.com can't be built using Linux tools
+clean: tidy
+	rm -f *.lss *.o *.c32 comecho.com
+
+spotless: clean

extra/syslinux-3.09/sample/README

@@ -0,0 +1,6 @@
+This directory contains files intended to be used as sample code.
+This includes COMBOOT, COM32, and MS-DOS programs as well as LSS
+icons.
+
+For developing COM32 programs, you probably want to use the new com32
+toolkit (libcom32 and libutil), available in the com32 directory.

extra/syslinux-3.09/sample/atou.c

@@ -0,0 +1,14 @@
+static inline int
+isdigit(int ch)
+{
+  return (ch >= '0') && (ch <= '9');
+}
+
+unsigned int atou(const char *s)
+{
+  unsigned int i = 0;
+  while (isdigit(*s))
+    i = i*10 + (*s++ - '0');
+  return i;
+}
+

extra/syslinux-3.09/sample/c32echo.c

@@ -0,0 +1,49 @@
+#ident "$Id: c32echo.c,v 1.3 2005/01/03 08:23:16 hpa Exp $"
+/* ----------------------------------------------------------------------- *
+ *   
+ *   Copyright 2002 H. Peter Anvin - All Rights Reserved
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
+ *   Boston MA 02111-1307, USA; either version 2 of the License, or
+ *   (at your option) any later version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * c32echo.c
+ *
+ * Simple COM32 program which only prints out its own command line
+ */
+
+#include <com32.h>
+
+#define NULL ((void *)0)
+
+static inline void memset(void *buf, int ch, unsigned int len)
+{
+  asm volatile("cld; rep; stosb"
+	       : "+D" (buf), "+c" (len) : "a" (ch) : "memory");
+}
+
+int __start(void)
+{
+  com32sys_t inreg;
+  const char *p;
+
+  memset(&inreg, 0, sizeof inreg);
+  inreg.eax.b[1] = 0x02;	/* Write Character */
+
+  for ( p = __com32.cs_cmdline ; *p ; p++ ) {
+    inreg.edx.b[0] = *p;
+    __com32.cs_intcall(0x21, &inreg, NULL);
+  }
+
+  inreg.edx.b[0] = '\r';
+  __com32.cs_intcall(0x21, &inreg, NULL);
+  inreg.edx.b[0] = '\n';
+  __com32.cs_intcall(0x21, &inreg, NULL);
+
+  return 0;
+}

extra/syslinux-3.09/sample/c32entry.S

@@ -0,0 +1,67 @@
+#ident "$Id: c32entry.S,v 1.5 2005/01/03 08:23:16 hpa Exp $"
+# -----------------------------------------------------------------------
+#   
+#   Copyright 2003 H. Peter Anvin - All Rights Reserved
+#
+#   Permission is hereby granted, free of charge, to any person
+#   obtaining a copy of this software and associated documentation
+#   files (the "Software"), to deal in the Software without
+#   restriction, including without limitation the rights to use,
+#   copy, modify, merge, publish, distribute, sublicense, and/or
+#   sell copies of the Software, and to permit persons to whom
+#   the Software is furnished to do so, subject to the following
+#   conditions:
+#   
+#   The above copyright notice and this permission notice shall
+#   be included in all copies or substantial portions of the Software.
+#   
+#   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+#   EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+#   OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+#   NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+#   HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+#   WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+#   FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+#   OTHER DEALINGS IN THE SOFTWARE.
+#
+# -----------------------------------------------------------------------
+
+# COM32 start up code - must be linked first in the binary
+
+	
+		.section ".text","ax"
+		.globl _start
+_start:
+		# This first instruction acts as COM32 magic number
+		movl $0x21cd4cff,%eax
+
+		# Upwards string operations
+		cld
+
+		# Zero the .bss segment
+		xorl %eax,%eax
+		movl $__bss_start,%edi		# Symbol provided by linker
+		movl $_end+3,%ecx		# Symbol provided by linker
+		subl %edi,%ecx
+		shrl $2,%ecx
+		rep ; stosl
+
+		# Copy COM32 invocation parameters
+		leal 4(%esp),%esi		# Argument list
+		movl $__com32,%edi
+		movl $6,%ecx
+		movl %esp,-4(%edi)		# Save the initial stack ptr
+		cmpl (%esi),%ecx
+		jbe 1f
+		movl (%esi),%ecx
+1:		rep ; movsl
+
+		# Run program; we call this __start rather than main since we
+		# did not parse the command line or anything like that.
+		jmp __start
+
+		.section ".bss","aw"
+		.globl __entry_esp
+__entry_esp:	.space 4
+		.globl __com32
+__com32:	.space 4*6

extra/syslinux-3.09/sample/c32exit.S

@@ -0,0 +1,10 @@
+# $Id#
+#
+# Implementation of exit() for com32 based on c32entry.S
+#
+	.text
+	.globl exit
+exit:
+	movl 4(%esp),%eax		# Exit code in %eax = return value
+	movl (__entry_esp),%esp		# Return stack pointer to entry value
+	ret				# Return to termination address

extra/syslinux-3.09/sample/comecho.asm

@@ -0,0 +1,35 @@
+;
+; Simple COMBOOT program that just prints out its own command line.
+; This also works in DOS.
+;
+
+	org 100h
+
+_start:
+	xor cx,cx
+	mov cl,[80h]			; Command line len
+	mov si,81h			; Command line
+
+	mov dl,"<"
+	mov ah,02h
+	int 21h
+	
+.writechar:
+	lodsb
+	mov dl,al
+	mov ah,02h
+	int 21h
+	loop .writechar
+
+	mov dx,end_str
+	mov ah,09h
+	int 21h
+
+	; Exit with near return, INT 20h, or INT 21h AX=4C00h
+	ret
+	
+		
+end_str	db ">", 0Dh, 0Ah, "$"
+	
+	
+	

extra/syslinux-3.09/sample/conio.c

@@ -0,0 +1,61 @@
+#ident "$Id: conio.c,v 1.4 2005/01/03 08:23:16 hpa Exp $"
+/* ----------------------------------------------------------------------- *
+ *   
+ *   Copyright 2001-2003 H. Peter Anvin - All Rights Reserved
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
+ *   Boston MA 02111-1307, USA; either version 2 of the License, or
+ *   (at your option) any later version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * conio.c
+ *
+ * Output to the screen
+ */
+
+#include <com32.h>
+#include <stdarg.h>
+
+#define NULL ((void *)0)
+
+static inline void memset(void *buf, int ch, unsigned int len)
+{
+  asm volatile("cld; rep; stosb"
+	       : "+D" (buf), "+c" (len) : "a" (ch) : "memory");
+}
+
+int putchar(int ch)
+{
+  com32sys_t regs;
+
+  memset(&regs, 0, sizeof regs);
+
+  if ( ch == '\n' ) {
+    /* \n -> \r\n */
+    putchar('\r');
+  }
+  
+  regs.eax.b[1] = 0x02;
+  regs.edx.b[0] = ch;
+  __com32.cs_intcall(0x21, &regs, NULL);
+
+  return ch;
+}
+
+/* Note: doesn't put '\n' like the stdc version does */
+int puts(const char *s)
+{
+  int count = 0;
+
+  while ( *s ) {
+    putchar(*s);
+    count++;
+    s++;
+  }
+
+  return count;
+}

extra/syslinux-3.09/sample/fd.c

@@ -0,0 +1,63 @@
+#ident "$Id: fd.c,v 1.2 2004/12/14 22:46:25 hpa Exp $"
+/* ----------------------------------------------------------------------- *
+ *   
+ *   Copyright 2003 H. Peter Anvin - All Rights Reserved
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
+ *   Boston MA 02111-1307, USA; either version 2 of the License, or
+ *   (at your option) any later version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * fd.c
+ *
+ * Chainload a floppy disk (currently rather braindead.)
+ */
+
+#include <com32.h>
+#define NULL ((void *)0)
+
+int printf(const char *, ...);
+unsigned int atou(const char *);
+
+int __start(void)
+{
+  int whichfd = atou(__com32.cs_cmdline);
+  static com32sys_t inreg, outreg; /* In bss, so zeroed automatically */
+  int retry;
+
+  for ( retry = 0 ; retry < 6 ; retry++ ) {
+    printf(">");
+    inreg.eax.w[0] = 0x0201;	/* Read one sector */
+    inreg.ecx.w[0] = 0x0001;	/* Cyl 0 sector 1 */
+    inreg.edx.b[1] = 0;		/* Head 0 */
+    inreg.edx.b[0] = whichfd;	/* Drive number */
+    inreg.es = SEG(__com32.cs_bounce); /* Read into the bounce buffer */
+    inreg.ebx.w[0] = OFFS(__com32.cs_bounce);
+    __com32.cs_intcall(0x13, &inreg, &outreg);
+
+    if ( (outreg.eflags.l & 1) == 0 )
+      break;
+  }
+
+  if ( (outreg.eflags.l & 1) == 0 ) {
+    printf("!\n");
+    inreg.eax.w[0] = 0x000d;
+    inreg.edx.w[0] = 0;
+    inreg.edi.l    = (uint32_t) __com32.cs_bounce;
+    inreg.ecx.l    = 512;
+    inreg.ebx.l    = whichfd & 0xff;
+    inreg.esi.l    = 0;		/* No partitions */
+    inreg.ds       = 0;		/* No partitions */
+    __com32.cs_intcall(0x22, &inreg, NULL);
+  }
+
+  /* If we get here, badness happened */
+  return 255;
+}
+
+
+  

extra/syslinux-3.09/sample/filetest.c

@@ -0,0 +1,98 @@
+#include <com32.h>
+#include <stdarg.h>
+
+#define NULL ((void *)0)
+int printf(const char *, ...);
+int putchar(int);
+
+static inline void memset(void *buf, int ch, unsigned int len)
+{
+  asm volatile("cld; rep; stosb"
+               : "+D" (buf), "+c" (len) : "a" (ch) : "memory");
+}
+
+static void strcpy(char *dst, const char *src)
+{
+  while ( *src )
+    *dst++ = *src++;
+
+  *dst = '\0';
+}
+
+static void printregs(const com32sys_t *r)
+{
+  printf("eflags = %08x  ds = %04x  es = %04x  fs = %04x  gs = %04x\n"
+	 "eax = %08x  ebx = %08x  ecx = %08x  edx = %08x\n"
+	 "ebp = %08x  esi = %08x  edi = %08x  esp = %08x\n",
+	 r->eflags.l, r->ds, r->es, r->fs, r->gs,
+	 r->eax.l, r->ebx.l, r->ecx.l, r->edx.l,
+	 r->ebp.l, r->esi.l, r->edi.l, r->_unused.l);
+}
+
+int __start(void)
+{
+  unsigned int ax,cx,si,t;
+  com32sys_t  inreg,outreg;
+  char *p;
+  
+  /* Test null system call */
+  inreg.eflags.l = 0xffffffff;
+  inreg.eax.l = 0x11110000;
+  inreg.ecx.l = 0x22222222;
+  inreg.edx.l = 0x33333333;
+  inreg.ebx.l = 0x44444444;
+  inreg.ebp.l = 0x55555555;
+  inreg.esi.l = 0x66666666;
+  inreg.edi.l = 0x77777777;
+  inreg.ds = 0xaaaa;
+  inreg.es = 0xbbbb;
+  inreg.fs = 0xcccc;
+  inreg.gs = 0xdddd;
+  printregs(&inreg);
+  __com32.cs_intcall(0x22, &inreg, &outreg);
+  printregs(&outreg);
+  printf("----\n");
+
+  memset(&inreg, 0, sizeof inreg);
+  memset(&outreg, 0, sizeof outreg);
+  strcpy(__com32.cs_bounce, "test.txt");
+  inreg.eax.w[0] = 0x0006;  // Open file
+  inreg.esi.w[0] = OFFS(__com32.cs_bounce);
+  inreg.es = SEG(__com32.cs_bounce);
+  printregs(&inreg);
+  __com32.cs_intcall(0x22, &inreg, &outreg);
+  printregs(&outreg);
+  printf("----\n");
+  
+  si = outreg.esi.w[0];		/* File handle */
+  cx = outreg.ecx.w[0];		/* Block size */
+  ax = outreg.eax.l;		/* File length */
+
+  while ( si ) {
+    /* We can only read 64K per call */
+    t = ( ax > 65536 ) ? 65536/cx : (ax+cx-1)/cx;
+    
+    memset(&inreg, 0, sizeof inreg);
+    inreg.esi.w[0] = si;
+    inreg.ecx.w[0] = t;		/* Block count */
+    inreg.eax.w[0] = 0x0007;  // Read file
+    inreg.ebx.w[0] = OFFS(__com32.cs_bounce);
+    inreg.es = SEG(__com32.cs_bounce);
+    printregs(&inreg);
+    __com32.cs_intcall(0x22, &inreg, &outreg);
+    printregs(&outreg);
+    printf("----\n");
+    si = outreg.esi.w[0];
+
+    /* Print the buffer */
+    t = (ax < 65536) ? ax : 65536;
+    p = __com32.cs_bounce;
+    while ( t ) {
+      putchar(*p++);
+      t--;
+      ax--;
+    }
+  }
+
+  return 0;
+}

extra/syslinux-3.09/sample/hello.c

@@ -0,0 +1,45 @@
+#ident "$Id: hello.c,v 1.6 2005/01/03 08:23:16 hpa Exp $"
+/* ----------------------------------------------------------------------- *
+ *   
+ *   Copyright 2002 H. Peter Anvin - All Rights Reserved
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
+ *   Boston MA 02111-1307, USA; either version 2 of the License, or
+ *   (at your option) any later version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * hello.c
+ *
+ * Simple COM32 image
+ */
+
+#include <com32.h>
+
+#define NULL ((void *)0)
+
+static inline void memset(void *buf, int ch, unsigned int len)
+{
+  asm volatile("cld; rep; stosb"
+	       : "+D" (buf), "+c" (len) : "a" (ch) : "memory");
+}
+
+int __start(void)
+{
+  const char *msg = "Hello, World!\r\n";
+  com32sys_t inreg;
+  const char *p;
+
+  memset(&inreg, 0, sizeof inreg);
+
+  for ( p = msg ; *p ; p++ ) {
+    inreg.edx.b[0] = *p;
+    inreg.eax.b[1] = 0x02;	/* Write Character */
+    __com32.cs_intcall(0x21, &inreg, NULL);
+  }
+
+  return 0;
+}

extra/syslinux-3.09/sample/hello2.c

@@ -0,0 +1,61 @@
+#ident "$Id: hello2.c,v 1.4 2004/12/14 22:46:25 hpa Exp $"
+/* ----------------------------------------------------------------------- *
+ *   
+ *   Copyright 2002 H. Peter Anvin - All Rights Reserved
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
+ *   Boston MA 02111-1307, USA; either version 2 of the License, or
+ *   (at your option) any later version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * hello2.c
+ *
+ * Simple COM32 image
+ *
+ * This version shows how to use the bounce buffer for data transfer
+ * to the BIOS or COMBOOT system calls.
+ */
+
+#include <com32.h>
+
+#define NULL ((void *)0)
+
+static inline void memset(void *buf, int ch, unsigned int len)
+{
+  asm volatile("cld; rep; stosb"
+	       : "+D" (buf), "+c" (len) : "a" (ch) : "memory");
+}
+
+static void strcpy(char *dst, const char *src)
+{
+  while ( *src )
+    *dst++ = *src++;
+
+  *dst = '\0';
+}
+
+static void writemsg(const char *msg)
+{
+  com32sys_t inreg;
+
+  memset(&inreg, 0, sizeof inreg);
+
+  strcpy(__com32.cs_bounce, msg);
+  inreg.eax.w[0] = 0x0002;	/* Write string */
+  inreg.ebx.w[0] = OFFS(__com32.cs_bounce);
+  inreg.es       = SEG(__com32.cs_bounce);
+  __com32.cs_intcall(0x22, &inreg, NULL);
+};  
+
+int __start(void)
+{
+  writemsg("Hello, World!\r\n"
+	   "cmdline = ");
+  writemsg(__com32.cs_cmdline);
+  writemsg("\r\n");
+  return 0;
+}

extra/syslinux-3.09/sample/mdiskchk.c

@@ -0,0 +1,147 @@
+/* -*- c -*- ------------------------------------------------------------- *
+ *   
+ *   Copyright 2003-2004 H. Peter Anvin - All Rights Reserved
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
+ *   Boston MA 02111-1307, USA; either version 2 of the License, or
+ *   (at your option) any later version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+/* $Id: mdiskchk.c,v 1.7 2004/12/30 21:57:12 hpa Exp $ */
+
+/*
+ * mdiskchk.c
+ *
+ * DOS program to check for the existence of a memdisk.
+ *
+ * This program can be compiled for DOS with the OpenWatcom compiler
+ * (http://www.openwatcom.org/):
+ *
+ * wcl -3 -osx -mt mdiskchk.c
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <i86.h>		/* For MK_FP() */
+
+typedef unsigned long  uint32_t;
+typedef unsigned short uint16_t;
+typedef unsigned char  uint8_t;
+
+struct memdiskinfo {
+  uint16_t bytes;		/* Bytes from memdisk */
+  uint16_t version;		/* Memdisk version */
+  uint32_t base;		/* Base of disk in high memory */
+  uint32_t size;		/* Size of disk in sectors */
+  char far * cmdline;		/* Command line */
+  void far * oldint13;		/* Old INT 13h */
+  void far * oldint15;		/* Old INT 15h */
+  uint16_t olddosmem;
+  uint8_t  bootloaderid;
+
+  uint8_t _pad;
+
+  /* We add our own fields at the end */
+  int cylinders;
+  int heads;
+  int sectors;
+};
+
+struct memdiskinfo * query_memdisk(int drive)
+{
+  static struct memdiskinfo mm;
+  uint32_t _eax, _ebx, _ecx, _edx;
+  uint16_t _es, _di;
+  unsigned char _dl = drive;
+  uint16_t bytes;
+
+  __asm {
+    .386 ;
+    mov eax, 454d0800h ;
+    mov ecx, 444d0000h ;
+    mov edx, 53490000h ;
+    mov dl, _dl ;
+    mov ebx, 3f4b0000h ;
+    int 13h ;
+    mov _eax, eax ;
+    mov _ecx, ecx ;
+    mov _edx, edx ;
+    mov _ebx, ebx ;
+    mov _es, es ;
+    mov _di, di ;
+  }
+  
+  if ( _eax >> 16 != 0x4d21 ||
+       _ecx >> 16 != 0x4d45 ||
+       _edx >> 16 != 0x4944 ||
+       _ebx >> 16 != 0x4b53 )
+    return NULL;
+
+  memset(&mm, 0, sizeof mm);
+
+  bytes = *(uint16_t far *)MK_FP(_es, _di);
+
+  /* 27 is the most we know how to handle */
+  if ( bytes > 27 )
+    bytes = 27;
+
+  _fmemcpy((void far *)&mm, (void far *)MK_FP(_es,_di), bytes);
+
+  mm.cylinders = ((_ecx >> 8) & 0xff) + ((_ecx & 0xc0) << 2) + 1;
+  mm.heads     = ((_edx >> 8) & 0xff) + 1;
+  mm.sectors   = (_ecx & 0x3f);
+  
+  return &mm;
+}
+
+const char *bootloadername(uint8_t id)
+{
+  static const struct {
+    uint8_t id, mask;
+    const char *name;
+  } *lp, list[] =
+    {
+      { 0x10, 0xf0, "LILO" },
+      { 0x20, 0xf0, "LOADLIN" },
+      { 0x31, 0xff, "SYSLINUX" },
+      { 0x32, 0xff, "PXELINUX" },
+      { 0x33, 0xff, "ISOLINUX" },
+      { 0x34, 0xff, "EXTLINUX" },
+      { 0x30, 0xf0, "SYSLINUX family" },
+      { 0x40, 0xf0, "Etherboot" },
+      { 0x50, 0xf0, "ELILO" },
+      { 0x70, 0xf0, "GrUB" },
+      { 0x80, 0xf0, "U-Boot" },
+      { 0x00, 0x00, "unknown" }
+    };
+
+  for ( lp = list ; ; lp++ ) {
+    if ( ((id ^ lp->id) & lp->mask) == 0 )
+      return lp->name;
+  }
+}
+
+int main(int argc, char *argv[])
+{
+  int d;
+  int found = 0;
+  struct memdiskinfo *m;
+
+  for ( d = 0 ; d <= 0xff ; d++ ) {
+    if ( (m = query_memdisk(d)) != NULL ) {
+      printf("Drive %02X is MEMDISK %u.%02u:\n"
+	     "\tAddress = 0x%08lx, len = %lu sectors, chs = %u/%u/%u,\n"
+	     "\tloader = 0x%02x (%s),\n"
+	     "\tcmdline = %Fs\n",
+	     d, m->version >> 8, m->version & 0xff,
+	     m->base, m->size, m->cylinders, m->heads, m->sectors,
+	     m->bootloaderid, bootloadername(m->bootloaderid),
+	     m->cmdline);
+      found++;
+    }
+  }
+  
+  return found;
+}

extra/syslinux-3.09/sample/printf.c

@@ -0,0 +1,307 @@
+/*
+ * Oh, it's a waste of space, but oh-so-yummy for debugging.  It's just
+ * initialization code anyway, so it doesn't take up space when we're
+ * actually running.  This version of printf() does not include 64-bit
+ * support.  "Live with it."
+ *
+ * Most of this code was shamelessly snarfed from the Linux kernel, then
+ * modified.
+ *
+ * FIX THIS: Replace printf() implementation with BSD/MIT-licensed one
+ * from klibc
+ */
+
+#include <stdarg.h>
+
+int puts(const char *);
+
+static inline int
+isdigit(int ch)
+{
+  return (ch >= '0') && (ch <= '9');
+}
+
+unsigned int skip_atou(const char **s);
+unsigned int atou(const char *s);
+
+static int strnlen(const char *s, int maxlen)
+{
+  const char *es = s;
+  while ( *es && maxlen ) {
+    es++; maxlen--;
+  }
+
+  return (es-s);
+}
+
+#define ZEROPAD	1		/* pad with zero */
+#define SIGN	2		/* unsigned/signed long */
+#define PLUS	4		/* show plus */
+#define SPACE	8		/* space if plus */
+#define LEFT	16		/* left justified */
+#define SPECIAL	32		/* 0x */
+#define LARGE	64		/* use 'ABCDEF' instead of 'abcdef' */
+
+#define do_div(n,base) ({ \
+int __res; \
+__res = ((unsigned long) n) % (unsigned) base; \
+n = ((unsigned long) n) / (unsigned) base; \
+__res; })
+
+static char * number(char * str, long num, int base, int size, int precision
+	,int type)
+{
+  char c,sign,tmp[66];
+  const char *digits="0123456789abcdefghijklmnopqrstuvwxyz";
+  int i;
+  
+  if (type & LARGE)
+    digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+  if (type & LEFT)
+    type &= ~ZEROPAD;
+  if (base < 2 || base > 36)
+    return 0;
+  c = (type & ZEROPAD) ? '0' : ' ';
+  sign = 0;
+  if (type & SIGN) {
+    if (num < 0) {
+      sign = '-';
+      num = -num;
+      size--;
+    } else if (type & PLUS) {
+      sign = '+';
+      size--;
+    } else if (type & SPACE) {
+      sign = ' ';
+      size--;
+    }
+  }
+  if (type & SPECIAL) {
+    if (base == 16)
+      size -= 2;
+    else if (base == 8)
+      size--;
+  }
+  i = 0;
+  if (num == 0)
+    tmp[i++]='0';
+  else while (num != 0)
+    tmp[i++] = digits[do_div(num,base)];
+  if (i > precision)
+    precision = i;
+  size -= precision;
+  if (!(type&(ZEROPAD+LEFT)))
+    while(size-->0)
+      *str++ = ' ';
+  if (sign)
+    *str++ = sign;
+  if (type & SPECIAL) {
+    if (base==8)
+      *str++ = '0';
+    else if (base==16) {
+      *str++ = '0';
+      *str++ = digits[33];
+    }
+  }
+  if (!(type & LEFT))
+    while (size-- > 0)
+      *str++ = c;
+  while (i < precision--)
+    *str++ = '0';
+  while (i-- > 0)
+    *str++ = tmp[i];
+  while (size-- > 0)
+    *str++ = ' ';
+  return str;
+}
+
+/* Forward decl. needed for IP address printing stuff... */
+int sprintf(char * buf, const char *fmt, ...);
+
+int vsprintf(char *buf, const char *fmt, va_list args)
+{
+  int len;
+  unsigned long num;
+  int i, base;
+  char * str;
+  const char *s;
+  
+  int flags;		/* flags to number() */
+  
+  int field_width;	/* width of output field */
+  int precision;		/* min. # of digits for integers; max
+				   number of chars for from string */
+  int qualifier;		/* 'h', 'l', or 'L' for integer fields */
+  
+  for (str=buf ; *fmt ; ++fmt) {
+    if (*fmt != '%') {
+      *str++ = *fmt;
+      continue;
+    }
+    
+    /* process flags */
+    flags = 0;
+  repeat:
+    ++fmt;		/* this also skips first '%' */
+    switch (*fmt) {
+    case '-': flags |= LEFT; goto repeat;
+    case '+': flags |= PLUS; goto repeat;
+    case ' ': flags |= SPACE; goto repeat;
+    case '#': flags |= SPECIAL; goto repeat;
+    case '0': flags |= ZEROPAD; goto repeat;
+    }
+    
+    /* get field width */
+    field_width = -1;
+    if (isdigit(*fmt))
+      field_width = skip_atou(&fmt);
+    else if (*fmt == '*') {
+      ++fmt;
+      /* it's the next argument */
+      field_width = va_arg(args, int);
+      if (field_width < 0) {
+	field_width = -field_width;
+	flags |= LEFT;
+      }
+    }
+    
+    /* get the precision */
+    precision = -1;
+    if (*fmt == '.') {
+      ++fmt;	
+      if (isdigit(*fmt))
+	precision = skip_atou(&fmt);
+      else if (*fmt == '*') {
+	++fmt;
+	/* it's the next argument */
+	precision = va_arg(args, int);
+      }
+      if (precision < 0)
+	precision = 0;
+    }
+    
+    /* get the conversion qualifier */
+    qualifier = -1;
+    if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L') {
+      qualifier = *fmt;
+      ++fmt;
+    }
+    
+    /* default base */
+    base = 10;
+    
+    switch (*fmt) {
+    case 'c':
+      if (!(flags & LEFT))
+	while (--field_width > 0)
+	  *str++ = ' ';
+      *str++ = (unsigned char) va_arg(args, int);
+      while (--field_width > 0)
+	*str++ = ' ';
+      continue;
+      
+    case 's':
+      s = va_arg(args, char *);
+      len = strnlen(s, precision);
+      
+      if (!(flags & LEFT))
+	while (len < field_width--)
+	  *str++ = ' ';
+      for (i = 0; i < len; ++i)
+	*str++ = *s++;
+      while (len < field_width--)
+	*str++ = ' ';
+      continue;
+      
+    case 'p':
+      if (field_width == -1) {
+	field_width = 2*sizeof(void *);
+	flags |= ZEROPAD;
+      }
+      str = number(str,
+		   (unsigned long) va_arg(args, void *), 16,
+		   field_width, precision, flags);
+      continue;
+      
+      
+    case 'n':
+      if (qualifier == 'l') {
+	long * ip = va_arg(args, long *);
+	*ip = (str - buf);
+      } else {
+	int * ip = va_arg(args, int *);
+	*ip = (str - buf);
+      }
+      continue;
+      
+    case '%':
+      *str++ = '%';
+      continue;
+      
+      /* integer number formats - set up the flags and "break" */
+    case 'o':
+      base = 8;
+      break;
+      
+    case 'X':
+      flags |= LARGE;
+    case 'x':
+      base = 16;
+      break;
+      
+    case 'd':
+    case 'i':
+      flags |= SIGN;
+    case 'u':
+      break;
+      
+    default:
+      *str++ = '%';
+      if (*fmt)
+	*str++ = *fmt;
+      else
+	--fmt;
+      continue;
+    }
+    if (qualifier == 'l')
+      num = va_arg(args, unsigned long);
+    else if (qualifier == 'h') {
+      num = (unsigned short) va_arg(args, int);
+      if (flags & SIGN)
+	num = (short) num;
+    } else if (flags & SIGN)
+      num = va_arg(args, int);
+    else
+      num = va_arg(args, unsigned int);
+    str = number(str, num, base, field_width, precision, flags);
+  }
+  *str = '\0';
+  return str-buf;
+}
+
+int sprintf(char * buf, const char *fmt, ...)
+{
+  va_list args;
+  int i;
+  
+  va_start(args, fmt);
+  i=vsprintf(buf,fmt,args);
+  va_end(args);
+  return i;
+}
+
+int printf(const char *fmt, ...)
+{
+  char printf_buf[1024];
+  va_list args;
+  int printed;
+
+  va_start(args, fmt);
+  printed = vsprintf(printf_buf, fmt, args);
+  va_end(args);
+
+  puts(printf_buf);
+
+  return printed;
+}
+

extra/syslinux-3.09/sample/sample.msg

@@ -0,0 +1,13 @@
+ $Id: sample.msg,v 1.2 2001/04/10 00:27:27 hpa Exp $
+Note that <Ctrl-P>...<Ctrl-W> can be used to delimit something
+that is effectively a comment.
+This message is displayed before the image.
+syslogo.lss
+This message is displayed after the image.
+
+Please note colors do not work quite as expected in graphics mode!
+
+04 RED 07 02 GREEN 07 01 BLUE 07
+47 RED 07 27 GREEN 07 17 BLUE 07
+
+

extra/syslinux-3.09/sample/skipatou.c

@@ -0,0 +1,14 @@
+static inline int
+isdigit(int ch)
+{
+  return (ch >= '0') && (ch <= '9');
+}
+
+unsigned int skip_atou(const char **s)
+{
+  int i=0;
+  
+  while (isdigit(**s))
+    i = i*10 + *((*s)++) - '0';
+  return i;
+}