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authorThomas Schwinge <tschwinge@gnu.org>2006-02-20 20:48:39 +0000
committerThomas Schwinge <tschwinge@gnu.org>2009-06-18 00:26:35 +0200
commitf20666fc6b0471738829363e20c27f282f65dbf2 (patch)
tree2a04b1ed1e0a8f328f3377225039cfe9243b084b /i386/dos/i16
parent2486c56afd5ac4392aa95f0e478978331d1c15d6 (diff)
2006-02-20 Thomas Schwinge <tschwinge@gnu.org>
Remove unused and unsupported code. Consult the file `DEVELOPMENT' for details. Partly based on suggestions by Gianluca Guida <glguida@gmail.com>. * i386/dos/dos_buf.c: Remove file. * i386/dos/dos_check_err.c: Likewise. * i386/dos/dos_close.c: Likewise. * i386/dos/dos_fstat.c: Likewise. * i386/dos/dos_gettimeofday.c: Likewise. * i386/dos/dos_io.h: Likewise. * i386/dos/dos_open.c: Likewise. * i386/dos/dos_read.c: Likewise. * i386/dos/dos_rename.c: Likewise. * i386/dos/dos_seek.c: Likewise. * i386/dos/dos_tcgetattr.c: Likewise. * i386/dos/dos_unlink.c: Likewise. * i386/dos/dos_write.c: Likewise. * i386/dos/i16/gdt.h: Likewise. * i386/dos/i16/gdt_sels.h: Likewise. * i386/dos/i16/i16_crt0.S: Likewise. * i386/dos/i16/i16_crt0.h: Likewise. * i386/dos/i16/i16_dos.h: Likewise. * i386/dos/i16/i16_dos_mem.c: Likewise. * i386/dos/i16/i16_exit.c: Likewise. * i386/dos/i16/i16_main.c: Likewise. * i386/dos/i16/i16_putchar.c: Likewise. * i386/dos/i16/i16_vcpi.c: Likewise. * i386/dos/i16/i16_xms.c: Likewise. * i386/dos/i16/idt.h: Likewise. * i386/dos/i16/phys_mem_sources.h: Likewise. * i386/dos/putchar.c: Likewise.
Diffstat (limited to 'i386/dos/i16')
-rw-r--r--i386/dos/i16/gdt.h32
-rw-r--r--i386/dos/i16/gdt_sels.h36
-rw-r--r--i386/dos/i16/i16_crt0.S274
-rw-r--r--i386/dos/i16/i16_crt0.h32
-rw-r--r--i386/dos/i16/i16_dos.h146
-rw-r--r--i386/dos/i16/i16_dos_mem.c182
-rw-r--r--i386/dos/i16/i16_exit.c50
-rw-r--r--i386/dos/i16/i16_main.c60
-rw-r--r--i386/dos/i16/i16_putchar.c36
-rw-r--r--i386/dos/i16/i16_vcpi.c564
-rw-r--r--i386/dos/i16/i16_xms.c175
-rw-r--r--i386/dos/i16/idt.h39
-rw-r--r--i386/dos/i16/phys_mem_sources.h28
13 files changed, 0 insertions, 1654 deletions
diff --git a/i386/dos/i16/gdt.h b/i386/dos/i16/gdt.h
deleted file mode 100644
index 3dad28b..0000000
--- a/i386/dos/i16/gdt.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Copyright (c) 1995-1994 The University of Utah and
- * the Computer Systems Laboratory at the University of Utah (CSL).
- * All rights reserved.
- *
- * Permission to use, copy, modify and distribute this software is hereby
- * granted provided that (1) source code retains these copyright, permission,
- * and disclaimer notices, and (2) redistributions including binaries
- * reproduce the notices in supporting documentation, and (3) all advertising
- * materials mentioning features or use of this software display the following
- * acknowledgement: ``This product includes software developed by the
- * Computer Systems Laboratory at the University of Utah.''
- *
- * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
- * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
- * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * CSL requests users of this software to return to csl-dist@cs.utah.edu any
- * improvements that they make and grant CSL redistribution rights.
- *
- * Author: Bryan Ford, University of Utah CSL
- */
-#ifndef _I386_DOS_GDT_
-#define _I386_DOS_GDT_
-
-#define cpu_gdt_init_VCPI_CS(cpu)
-#define cpu_gdt_init_VCPI_2(cpu)
-#define cpu_gdt_init_VCPI_3(cpu)
-
-#include_next "gdt.h"
-
-#endif _I386_DOS_GDT_
diff --git a/i386/dos/i16/gdt_sels.h b/i386/dos/i16/gdt_sels.h
deleted file mode 100644
index 25e7d96..0000000
--- a/i386/dos/i16/gdt_sels.h
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright (c) 1995-1994 The University of Utah and
- * the Computer Systems Laboratory at the University of Utah (CSL).
- * All rights reserved.
- *
- * Permission to use, copy, modify and distribute this software is hereby
- * granted provided that (1) source code retains these copyright, permission,
- * and disclaimer notices, and (2) redistributions including binaries
- * reproduce the notices in supporting documentation, and (3) all advertising
- * materials mentioning features or use of this software display the following
- * acknowledgement: ``This product includes software developed by the
- * Computer Systems Laboratory at the University of Utah.''
- *
- * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
- * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
- * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * CSL requests users of this software to return to csl-dist@cs.utah.edu any
- * improvements that they make and grant CSL redistribution rights.
- *
- * Author: Bryan Ford, University of Utah CSL
- */
-
-#include "config.h"
-
-#include_next "gdt_sels.h"
-
-#ifdef ENABLE_VCPI
-
-/* Segment descriptors for use by a VCPI server. */
-gdt_sel(VCPI_CS)
-gdt_sel(VCPI_2)
-gdt_sel(VCPI_3)
-
-#endif ENABLE_VCPI
-
diff --git a/i386/dos/i16/i16_crt0.S b/i386/dos/i16/i16_crt0.S
deleted file mode 100644
index f21c6a6..0000000
--- a/i386/dos/i16/i16_crt0.S
+++ /dev/null
@@ -1,274 +0,0 @@
-/*
- * Copyright (c) 1995-1994 The University of Utah and
- * the Computer Systems Laboratory at the University of Utah (CSL).
- * All rights reserved.
- *
- * Permission to use, copy, modify and distribute this software is hereby
- * granted provided that (1) source code retains these copyright, permission,
- * and disclaimer notices, and (2) redistributions including binaries
- * reproduce the notices in supporting documentation, and (3) all advertising
- * materials mentioning features or use of this software display the following
- * acknowledgement: ``This product includes software developed by the
- * Computer Systems Laboratory at the University of Utah.''
- *
- * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
- * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
- * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * CSL requests users of this software to return to csl-dist@cs.utah.edu any
- * improvements that they make and grant CSL redistribution rights.
- *
- * Author: Bryan Ford, University of Utah CSL
- */
-
-#include <mach/machine/asm.h>
-
-#include "config.h"
-#include "i16_crt0.h"
-
- .code16
- .text
-
-ENTRY(i16_entry)
- /* DOS starts us up with our stack pointer pointing
- to the very top of our BSS segment.
- ds and es point to the PSP. */
-
-#define DELAY jmp 1f; 1: jmp 1f; 1: jmp 1f; 1:
-
- /* Check to make sure we're running on a 386 or higher -
- _without_ using any 32-bit instructions of course.
- Tricky, since gas doesn't support 16-bit addressing modes. :-)
- We can't produce any 16-bit relocations either,
- because ELF doesn't support them.
- This code is basically straight out of the Pentium manual,
- except gassed of coursed. */
- pushfw
- DELAY
- popw %bx
- movw $0xfff,%ax
- andw %bx,%ax
- pushw %ax
- DELAY
- popfw
- DELAY
- pushfw
- DELAY
- popw %ax
- and $0xf000,%ax
- cmpw $0xf000,%ax
-
- je 1f
- orw $0xf000,%bx
- pushw %bx
- DELAY
- popfw
- DELAY
- pushfw
- DELAY
- popw %ax
- andw $0xf000,%ax
- jnz 4f
-1:
- /* Gak! We're running on an 8086/8088/80286! */
- callw 5f
- .ascii "This program requires a 386 or better.\r\n\0"
-5: popw %si
- movw %cs,%ax
- movw %ax,%ds
- cld
-2: lodsb
- orb %al,%al
- jz 3f
- movb $0x02,%ah
- movb %al,%dl
- int $0x21
- jmp 2b
-3: movw $0x4c02,%ax
- int $0x21
-4:
- /* Now we can use 32-bit instructions all we want. */
-
- /* Save the PSP segment address (dx). */
- movw %ds,%dx
-
- /* Find our real-mode code segment (ax). */
- movw %cs,%ax
-
-#ifdef ENABLE_PAGE_ALIGNED_KERNEL
- /* Move our code and data so that everything is on a page boundary.
- Theoretically we _could_ go past the end of available memory,
- since we're not checking, but it's enormously unlikely. */
- std
- movw %ax,%ds
- addw $0xff,%ax
- andw $0xff00,%ax
- movw %ax,%es
- movl $EXT(edata),%ecx
- subl $EXT(i16_entry_2),%ecx
- movl $EXT(edata)-1,%esi
- movw %si,%di
- rep
- movsb
-
- /* Start running at the new address. */
- pushl $EXT(i16_entry_2)
- movw %ax,2(%esp)
- lretw
-
-ENTRY(i16_entry_2)
- /* We're now page aligned. */
-#endif ENABLE_PAGE_ALIGNED_KERNEL
-
- /* Load the data segment registers appropriately. */
- movw %ax,%es
- movw %ax,%ss
-
- /* Start using a real stack. */
- movl $EXT(crt0_stack)+CRT0_STACK_SIZE,%esp
-
- /* Clear our BSS segment. */
- movl $EXT(edata),%edi
- movl $EXT(end),%ecx
- subw %di,%cx
- xorb %al,%al
- cld
- rep
- stosb
-
- /* Find the size of the environment array (si)
- and the number of environment variables plus one (bx).
- The PSP segment is still in dx. */
- movw %dx,%ds
- movw 0x2c,%ds
- xorw %si,%si
-1: lodsb
- orb %al,%al
- jnz 1b
- lodsb
- orb %al,%al
- jnz 1b
-
- /* Allocate space for the environment array on the stack.
- Also make sure the top 16 bits of ESP are cleared,
- and that the stack pointer is longword aligned. */
- subw %si,%sp
- andl $0x0000fffc,%esp
-
- /* Copy the environment array to the local stack.
- We present it backwards, but big deal - shouldn't matter. */
- xorl %edi,%edi
- movw %sp,%di
- xorl %esi,%esi
- pushl %esi
- jmp 3f
-2: pushl %edi
- stosb
-1: lodsb
- stosb
- orb %al,%al
- jnz 1b
-3: lodsb
- orb %al,%al
- jnz 2b
- movl %esp,%cs:EXT(environ)
-
- /* Copy the program name to the local stack;
- it will be used as argv[0]. */
- lodsw
- movw %si,%bx
-1: pushw $0
- lodsb
- orb %al,%al
- jz 2f
- lodsb
- orb %al,%al
- jnz 1b
-2: movw %bx,%si
- movw %sp,%di
-3: lodsb
- stosb
- orb %al,%al
- jnz 3b
- movl %esp,%ebp
-
- /* Build argv[1..n] from the command tail in the PSP.
- Count the arguments in ebx. */
- movw %dx,%ds
- xorl %ecx,%ecx
- xorl %ebx,%ebx
- movb 0x80,%cl /* get size of command tail */
- incw %cx /* plus the return character */
- movw $0x80,%si
- addw %cx,%si /* si = ptr to return character */
- movw %sp,%di
- decw %di
- subw %cx,%sp /* allocate space on the stack */
- andw $0xfffc,%sp
- pushl %ebx
- std
-1: xorb %al,%al /* store a null terminator for this arg */
- stosb
- incl %ebx
-2: cmpw $0x80,%si
- je 5f
- lodsb /* scan backwards for the end of an arg */
- cmpb $0x20,%al
- jbe 2b
-3: stosb /* copy the arg */
- cmpw $0x80,%si
- je 4f
- lodsb
- cmpb $0x20,%al
- ja 3b
-4: movw %di,%cx /* push an arg pointer */
- incw %cx
- pushl %ecx
- jmp 1b
-5:
-
- /* Push the argv[0] pointer. */
- pushl %ebp
-
- /* Push the argument and envirnonment parameters on the stack. */
- movl %esp,%eax
- pushl %cs:EXT(environ)
- pushl %eax
- pushl %ebx
-
- /* Release all conventional memory above the top of our BSS.
- The PSP segment is still in dx. */
- movl $EXT(end)+15,%ebx
- shrw $4,%bx
- movw %cs,%ax
- addw %ax,%bx
- subw %dx,%bx
- movw %dx,%es
- movb $0x4a,%ah
- int $0x21
-
- /* Load the normal data segment registers. */
- movw %cs,%ax
- movw %ax,%ds
- movw %ax,%es
-
- /* GCC wants the direction flag cleared at all times. */
- cld
-
- /* Initialize the bss and run the program. */
- call EXT(i16_main)
-
- .globl EXT(crt0_stack)
- .comm EXT(crt0_stack),CRT0_STACK_SIZE
-
- .globl EXT(environ)
- .comm EXT(environ),4
-
-
- .data
-
- .section .anno,"aw",@progbits
- P2ALIGN(4)
- .globl __ANNO_START__
-__ANNO_START__:
-
diff --git a/i386/dos/i16/i16_crt0.h b/i386/dos/i16/i16_crt0.h
deleted file mode 100644
index 352d1cb..0000000
--- a/i386/dos/i16/i16_crt0.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Copyright (c) 1995-1994 The University of Utah and
- * the Computer Systems Laboratory at the University of Utah (CSL).
- * All rights reserved.
- *
- * Permission to use, copy, modify and distribute this software is hereby
- * granted provided that (1) source code retains these copyright, permission,
- * and disclaimer notices, and (2) redistributions including binaries
- * reproduce the notices in supporting documentation, and (3) all advertising
- * materials mentioning features or use of this software display the following
- * acknowledgement: ``This product includes software developed by the
- * Computer Systems Laboratory at the University of Utah.''
- *
- * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
- * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
- * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * CSL requests users of this software to return to csl-dist@cs.utah.edu any
- * improvements that they make and grant CSL redistribution rights.
- *
- * Author: Bryan Ford, University of Utah CSL
- */
-#ifndef _I386_DOS_I16_CRT0_H_
-#define _I386_DOS_I16_CRT0_H_
-
-#define CRT0_STACK_SIZE 4096
-
-#ifndef ASSEMBLER
-extern char crt0_stack[CRT0_STACK_SIZE];
-#endif
-
-#endif _I386_DOS_I16_CRT0_H_
diff --git a/i386/dos/i16/i16_dos.h b/i386/dos/i16/i16_dos.h
deleted file mode 100644
index 27b0ca4..0000000
--- a/i386/dos/i16/i16_dos.h
+++ /dev/null
@@ -1,146 +0,0 @@
-/*
- * Copyright (c) 1995-1994 The University of Utah and
- * the Computer Systems Laboratory at the University of Utah (CSL).
- * All rights reserved.
- *
- * Permission to use, copy, modify and distribute this software is hereby
- * granted provided that (1) source code retains these copyright, permission,
- * and disclaimer notices, and (2) redistributions including binaries
- * reproduce the notices in supporting documentation, and (3) all advertising
- * materials mentioning features or use of this software display the following
- * acknowledgement: ``This product includes software developed by the
- * Computer Systems Laboratory at the University of Utah.''
- *
- * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
- * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
- * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * CSL requests users of this software to return to csl-dist@cs.utah.edu any
- * improvements that they make and grant CSL redistribution rights.
- *
- * Author: Bryan Ford, University of Utah CSL
- */
-#ifndef _I16DOS_H_
-#define _I16DOS_H_
-
-#include <mach/inline.h>
-#include <mach/machine/far_ptr.h>
-
-
-/* Returns 16-bit DOS version number:
- major version number in high byte, minor in low byte. */
-MACH_INLINE unsigned short i16_dos_version(void)
-{
- unsigned short dos_version_swapped;
- asm volatile("int $0x21" : "=a" (dos_version_swapped) : "a" (0x3000));
- return (dos_version_swapped >> 8) | (dos_version_swapped << 8);
-}
-
-MACH_INLINE void i16_dos_putchar(int c)
-{
- asm volatile("int $0x21" : : "a" (0x0200), "d" (c));
-}
-
-MACH_INLINE void i16_dos_exit(int rc)
-{
- asm volatile("int $0x21" : : "a" (0x4c00 | (rc & 0xff)));
-}
-
-MACH_INLINE void i16_dos_get_int_vec(int vecnum, struct far_pointer_16 *out_vec)
-{
- asm volatile("
- pushw %%es
- int $0x21
- movw %%es,%0
- popw %%es
- " : "=r" (out_vec->seg), "=b" (out_vec->ofs)
- : "a" (0x3500 | vecnum));
-}
-
-MACH_INLINE void i16_dos_set_int_vec(int vecnum, struct far_pointer_16 *new_vec)
-{
- asm volatile("
- pushw %%ds
- movw %1,%%ds
- int $0x21
- popw %%ds
- " :
- : "a" (0x2500 | vecnum),
- "r" (new_vec->seg), "d" (new_vec->ofs));
-}
-
-/* Open a DOS file and return the new file handle.
- Returns -1 if an error occurs. */
-MACH_INLINE int i16_dos_open(const char *filename, int access)
-{
- int fh;
- asm volatile("
- int $0x21
- jnc 1f
- movl $-1,%%eax
- 1:
- " : "=a" (fh) : "a" (0x3d00 | access), "d" (filename));
- return fh;
-}
-
-MACH_INLINE void i16_dos_close(int fh)
-{
- asm volatile("int $0x21" : : "a" (0x3e00), "b" (fh));
-}
-
-MACH_INLINE int i16_dos_get_device_info(int fh)
-{
- int info_word;
- asm volatile("
- int $0x21
- jnc 1f
- movl $-1,%%edx
- 1:
- " : "=d" (info_word) : "a" (0x4400), "b" (fh), "d" (0));
- return info_word;
-}
-
-MACH_INLINE int i16_dos_get_output_status(int fh)
-{
- int status;
- asm volatile("
- int $0x21
- movzbl %%al,%%eax
- jnc 1f
- movl $-1,%%eax
- 1:
- " : "=a" (status) : "a" (0x4407), "b" (fh));
- return status;
-}
-
-MACH_INLINE int i16_dos_alloc(unsigned short *inout_paras)
-{
- int seg;
- asm volatile("
- int $0x21
- jnc 1f
- movl $-1,%%eax
- 1:
- " : "=a" (seg), "=b" (*inout_paras)
- : "a" (0x4800), "b" (*inout_paras));
- return seg;
-}
-
-MACH_INLINE int i16_dos_free(unsigned short seg)
-{
- asm volatile("
- pushw %%es
- movw %1,%%es
- int $0x21
- popw %%es
- " : : "a" (0x4900), "r" (seg) : "eax");
-}
-
-MACH_INLINE unsigned short i16_dos_get_psp_seg(void)
-{
- unsigned short psp_seg;
- asm volatile("int $0x21" : "=b" (psp_seg) : "a" (0x6200));
- return psp_seg;
-}
-
-#endif _I16DOS_H_
diff --git a/i386/dos/i16/i16_dos_mem.c b/i386/dos/i16/i16_dos_mem.c
deleted file mode 100644
index e78398d..0000000
--- a/i386/dos/i16/i16_dos_mem.c
+++ /dev/null
@@ -1,182 +0,0 @@
-/*
- * Copyright (c) 1995-1994 The University of Utah and
- * the Computer Systems Laboratory at the University of Utah (CSL).
- * All rights reserved.
- *
- * Permission to use, copy, modify and distribute this software is hereby
- * granted provided that (1) source code retains these copyright, permission,
- * and disclaimer notices, and (2) redistributions including binaries
- * reproduce the notices in supporting documentation, and (3) all advertising
- * materials mentioning features or use of this software display the following
- * acknowledgement: ``This product includes software developed by the
- * Computer Systems Laboratory at the University of Utah.''
- *
- * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
- * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
- * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * CSL requests users of this software to return to csl-dist@cs.utah.edu any
- * improvements that they make and grant CSL redistribution rights.
- *
- * Author: Bryan Ford, University of Utah CSL
- */
-
-#include <mach/machine/code16.h>
-#include <mach/machine/vm_types.h>
-
-#include "i16_dos.h"
-#include "config.h"
-
-
-
-/* These aren't static because vcpi and dpmi code need to grab DOS memory
- before we've switched to protected mode and memory has been collected. */
-vm_offset_t dos_mem_phys_free_mem;
-vm_size_t dos_mem_phys_free_size;
-
-
-CODE32
-
-void dos_mem_collect(void)
-{
- if (dos_mem_phys_free_mem)
- {
- phys_mem_add(dos_mem_phys_free_mem, dos_mem_phys_free_size);
- dos_mem_phys_free_mem = 0;
- }
-}
-
-CODE16
-
-void i16_dos_mem_check()
-{
- unsigned short paras = 0xf000;
- int dos_mem_seg;
-
- /* Allocate as big a chunk of memory as we can find. */
- do
- {
- if (paras == 0)
- return;
- dos_mem_seg = i16_dos_alloc(&paras);
- }
- while (dos_mem_seg < 0);
-
- dos_mem_phys_free_mem = dos_mem_seg << 4;
- dos_mem_phys_free_size = paras << 4;
-
-#ifdef ENABLE_CODE_CHECK
- i16_code_copy();
-#endif
-}
-
-
-#ifdef ENABLE_CODE_CHECK
-
-/* Big humongo kludge to help in finding random code-trashing bugs.
- We copy the entire text segment upon initialization,
- and then check it later as necessary. */
-
-#include <mach/machine/proc_reg.h>
-#include "vm_param.h"
-
-extern char etext[], i16_entry_2[];
-
-static int code_copy_seg;
-
-static int i16_code_copy()
-{
- int text_size = (int)etext & ~0xf;
- int i;
-
- if (dos_mem_phys_free_size < text_size)
- return;
-
- code_copy_seg = dos_mem_phys_free_mem >> 4;
- dos_mem_phys_free_mem += text_size;
- dos_mem_phys_free_size -= text_size;
-
- set_fs(code_copy_seg);
- for (i = 0; i < text_size; i += 4)
- asm volatile("
- movl (%%ebx),%%eax
- movl %%eax,%%fs:(%%ebx)
- " : : "b" (i) : "eax");
-}
-
-void i16_code_check(int dummy)
-{
- int text_size = (int)etext & ~0xf;
- int i, old, new;
- int found = 0;
-
- if (!code_copy_seg)
- return;
-
- set_fs(code_copy_seg);
- for (i = (int)i16_entry_2; i < text_size; i += 4)
- {
- asm volatile("
- movl (%%ebx),%%eax
- movl %%fs:(%%ebx),%%ecx
- " : "=a" (new), "=c" (old) : "b" (i));
- if (old != new)
- {
- found = 1;
- i16_writehexw(i);
- i16_putchar(' ');
- i16_writehexl(old);
- i16_putchar(' ');
- i16_writehexl(new);
- i16_putchar('\r');
- i16_putchar('\n');
- }
- }
- if (found)
- {
- code_copy_seg = 0;
- i16_writehexl((&dummy)[-1]);
- i16_die(" DOS extender code trashed!");
- }
-}
-
-CODE32
-
-void code_check(int dummy)
-{
- int text_size = (int)etext & ~0xf;
- unsigned char *new = 0, *old = (void*)phystokv(code_copy_seg*16);
- int found = 0;
- int i;
-
- if (!code_copy_seg)
- return;
-
- for (i = (int)i16_entry_2; (i < text_size) && (found < 10); i++)
- {
- /* In several places we have to self-modify an int instruction,
- or the segment value in an absolute long jmp instruction,
- so ignore any changes preceded by those opcodes. */
- if ((new[i] != old[i])
- && (old[i-1] != 0xcd)
- && (old[i-6] != 0xea))
- {
- if (!found)
- {
- found = 1;
- about_to_die(1);
- }
- printf("%08x addr %04x was %02x now %02x\n",
- (&dummy)[-1], i, old[i], new[i]);
- }
- }
- if (found)
- {
- code_copy_seg = 0;
- die("%08x DOS extender code trashed!", (&dummy)[-1]);
- }
-}
-
-CODE16
-
-#endif ENABLE_CODE_CHECK
diff --git a/i386/dos/i16/i16_exit.c b/i386/dos/i16/i16_exit.c
deleted file mode 100644
index 04b943c..0000000
--- a/i386/dos/i16/i16_exit.c
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * Copyright (c) 1995-1994 The University of Utah and
- * the Computer Systems Laboratory at the University of Utah (CSL).
- * All rights reserved.
- *
- * Permission to use, copy, modify and distribute this software is hereby
- * granted provided that (1) source code retains these copyright, permission,
- * and disclaimer notices, and (2) redistributions including binaries
- * reproduce the notices in supporting documentation, and (3) all advertising
- * materials mentioning features or use of this software display the following
- * acknowledgement: ``This product includes software developed by the
- * Computer Systems Laboratory at the University of Utah.''
- *
- * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
- * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
- * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * CSL requests users of this software to return to csl-dist@cs.utah.edu any
- * improvements that they make and grant CSL redistribution rights.
- *
- * Author: Bryan Ford, University of Utah CSL
- */
-
-#include <mach/machine/code16.h>
-
-#include "config.h"
-#include "i16_dos.h"
-
-
-CODE16
-
-void i16_exit(int rc)
-{
- /* Clean up properly. */
- i16_ext_mem_shutdown();
- i16_xms_shutdown();
-#ifdef ENABLE_VCPI
- i16_vcpi_shutdown();
-#endif
-#ifdef ENABLE_DPMI
- i16_dpmi_shutdown();
-#endif
-#ifdef ENABLE_CODE_CHECK
- i16_code_check();
-#endif
-
- /* Call the DOS exit function. */
- i16_dos_exit(rc);
-}
-
diff --git a/i386/dos/i16/i16_main.c b/i386/dos/i16/i16_main.c
deleted file mode 100644
index 5558d09..0000000
--- a/i386/dos/i16/i16_main.c
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (c) 1995-1994 The University of Utah and
- * the Computer Systems Laboratory at the University of Utah (CSL).
- * All rights reserved.
- *
- * Permission to use, copy, modify and distribute this software is hereby
- * granted provided that (1) source code retains these copyright, permission,
- * and disclaimer notices, and (2) redistributions including binaries
- * reproduce the notices in supporting documentation, and (3) all advertising
- * materials mentioning features or use of this software display the following
- * acknowledgement: ``This product includes software developed by the
- * Computer Systems Laboratory at the University of Utah.''
- *
- * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
- * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
- * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * CSL requests users of this software to return to csl-dist@cs.utah.edu any
- * improvements that they make and grant CSL redistribution rights.
- *
- * Author: Bryan Ford, University of Utah CSL
- */
-
-#include <mach/machine/code16.h>
-
-#include "config.h"
-#include "i16_dos.h"
-
-
-CODE16
-
-int argc;
-char **argv;
-
-void i16_main(int _argc, char **_argv)
-{
- argc = _argc;
- argv = _argv;
-
- i16_init();
-
- /* Make sure we're running on a good enough DOS version. */
- if (i16_dos_version() < 0x300)
- i16_die("DOS 3.00 or higher required.");
-
- /* See if we're running in a DPMI or VCPI environment.
- If either of these are successful, they don't return. */
- i16_dos_mem_check();
-#ifdef ENABLE_DPMI
- i16_dpmi_check();
-#endif
- i16_xms_check();
- i16_ext_mem_check();
-#ifdef ENABLE_VCPI
- i16_vcpi_check();
-#endif
-
- i16_raw_start();
-}
-
diff --git a/i386/dos/i16/i16_putchar.c b/i386/dos/i16/i16_putchar.c
deleted file mode 100644
index 911cbe4..0000000
--- a/i386/dos/i16/i16_putchar.c
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright (c) 1995-1994 The University of Utah and
- * the Computer Systems Laboratory at the University of Utah (CSL).
- * All rights reserved.
- *
- * Permission to use, copy, modify and distribute this software is hereby
- * granted provided that (1) source code retains these copyright, permission,
- * and disclaimer notices, and (2) redistributions including binaries
- * reproduce the notices in supporting documentation, and (3) all advertising
- * materials mentioning features or use of this software display the following
- * acknowledgement: ``This product includes software developed by the
- * Computer Systems Laboratory at the University of Utah.''
- *
- * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
- * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
- * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * CSL requests users of this software to return to csl-dist@cs.utah.edu any
- * improvements that they make and grant CSL redistribution rights.
- *
- * Author: Bryan Ford, University of Utah CSL
- */
-
-#include <mach/machine/code16.h>
-
-#include "i16_dos.h"
-
-CODE16
-
-void i16_putchar(int ch)
-{
- if (ch == '\n')
- i16_dos_putchar('\r');
- i16_dos_putchar(ch);
-}
-
diff --git a/i386/dos/i16/i16_vcpi.c b/i386/dos/i16/i16_vcpi.c
deleted file mode 100644
index e021d6b..0000000
--- a/i386/dos/i16/i16_vcpi.c
+++ /dev/null
@@ -1,564 +0,0 @@
-/*
- * Copyright (c) 1995-1994 The University of Utah and
- * the Computer Systems Laboratory at the University of Utah (CSL).
- * All rights reserved.
- *
- * Permission to use, copy, modify and distribute this software is hereby
- * granted provided that (1) source code retains these copyright, permission,
- * and disclaimer notices, and (2) redistributions including binaries
- * reproduce the notices in supporting documentation, and (3) all advertising
- * materials mentioning features or use of this software display the following
- * acknowledgement: ``This product includes software developed by the
- * Computer Systems Laboratory at the University of Utah.''
- *
- * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
- * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
- * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * CSL requests users of this software to return to csl-dist@cs.utah.edu any
- * improvements that they make and grant CSL redistribution rights.
- *
- * Author: Bryan Ford, University of Utah CSL
- */
-
-#include <mach/boolean.h>
-#include <mach/vm_param.h>
-#include <mach/machine/code16.h>
-#include <mach/machine/vm_types.h>
-#include <mach/machine/paging.h>
-#include <mach/machine/eflags.h>
-#include <mach/machine/proc_reg.h>
-#include <mach/machine/far_ptr.h>
-#include <mach/machine/vcpi.h>
-#include <mach/machine/asm.h>
-
-#include "config.h"
-#include "i16.h"
-#include "i16_dos.h"
-#include "cpu.h"
-#include "real.h"
-#include "debug.h"
-#include "vm_param.h"
-
-#ifdef ENABLE_VCPI
-
-static boolean_t ems_page_allocated;
-static unsigned short ems_handle;
-
-static vm_offset_t vcpi_pdir, vcpi_ptable0;
-
-struct far_pointer_32 vcpi_pmode_entry = {0, VCPI_CS};
-struct vcpi_switch_data vcpi_switch_data;
-
-static struct pseudo_descriptor gdt_pdesc, idt_pdesc;
-
-static boolean_t pic_reprogrammed;
-
-/* Save area for the DOS interrupt vectors
- that used to be in the place we relocated the master PIC to. */
-static struct far_pointer_16 master_save_vecs[8];
-
-
-#ifdef ENABLE_PAGING
-#define VCPI_PAGING_INIT(pdir_pa, first_unmapped_pa) vcpi_paging_init(pdir_pa, first_unmapped_pa)
-#else
-#define VCPI_PAGING_INIT(pdir_pa, first_unmapped_pa) ((void)0)
-#endif
-
-#ifdef ENABLE_KERNEL_LDT
-#define KERNEL_LDT_INIT() (vcpi_switch_data.ldt_sel = KERNEL_LDT)
-#else
-#define KERNEL_LDT_INIT() ((void)0)
-#endif
-
-
-CODE16
-
-static void i16_vcpi_switch_to_pmode()
-{
- extern vm_offset_t boot_image_pa;
-
- i16_cli();
-
- i16_assert(i16_get_ds() == i16_get_cs());
- i16_assert(i16_get_es() == i16_get_cs());
- i16_assert(i16_get_ss() == i16_get_cs());
-
- /* Make sure the TSS isn't marked busy. */
- cpu[0].tables.gdt[KERNEL_TSS_IDX].access &= ~ACC_TSS_BUSY;
-
- /* Ask the VCPI server to switch to protected mode. */
- asm volatile("
- movl %%esp,%%edx
- int $0x67
- "SEXT(pmode_return)":
- movl %%edx,%%esp
- movw %2,%%dx
- movw %%dx,%%ss
- movw %%dx,%%ds
- movw %%dx,%%es
- xorw %%dx,%%dx
- movw %%dx,%%fs
- movw %%dx,%%gs
- " :
- : "a" ((unsigned short)0xde0c),
- "S" (boot_image_pa + (vm_offset_t)&vcpi_switch_data),
- "i" (KERNEL_DS)
- : "eax", "edx", "esi");
-
- /* Make sure the direction flag is still clear. */
- i16_cld();
-}
-
-static void i16_vcpi_switch_to_real_mode()
-{
- i16_cli();
-
- /* As requested by VCPI spec... */
- i16_clts();
-
- /* Perform the switch. */
- asm volatile("
- movl %%esp,%%edx
- pushl %1
- pushl %1
- pushl %1
- pushl %1
- pushl %1
- pushl %%edx
- pushl $0
- pushl %1
- pushl $1f
- movw %2,%%ds
- lcall %%ss:"SEXT(vcpi_pmode_entry)"
- 1:
- " :
- : "a" ((unsigned short)0xde0c),
- "r" ((unsigned)real_cs),
- "r" ((unsigned short)LINEAR_DS)
- : "eax", "edx");
-
- i16_assert(!(i16_get_eflags() & EFL_IF));
- i16_assert(i16_get_ds() == i16_get_cs());
- i16_assert(i16_get_es() == i16_get_cs());
- i16_assert(i16_get_ss() == i16_get_cs());
-
- /* Make sure the direction flag is still clear. */
- i16_cld();
-}
-
-CODE32
-
-static void vcpi_real_int(int intnum, struct real_call_data *rcd)
-{
- do_16bit(
- unsigned int eflags;
-
- i16_vcpi_switch_to_real_mode();
- i16_real_int(intnum, rcd);
- i16_vcpi_switch_to_pmode();
- );
-}
-
-static void vcpi_exit(int rc)
-{
- do_16bit(
- i16_vcpi_switch_to_real_mode();
- i16_exit(rc);
- while (1);
- );
-}
-
-CODE16
-
-static inline void
-i16_vcpi_set_int_vecs(unsigned short master, unsigned short slave)
-{
- unsigned short rc;
-
- i16_assert(!(get_eflags() & EFL_IF));
- asm volatile("int $0x67"
- : "=a" (rc)
- : "a" ((unsigned short)0xde0b),
- "b" ((unsigned short)master),
- "c" ((unsigned short)slave));
- i16_assert((rc & 0xff00) == 0);
- i16_assert(!(get_eflags() & EFL_IF));
-}
-
-/* Find a (hopefully) empty set of interrupt vectors
- to use for the master hardware interrupts.
- We assume that eight interrupt vectors in a row
- that all have the same value are unused.
- If VCPI servers weren't so brain-damaged
- and took care of this during interrupt reflection
- (like we do when running in raw mode),
- this kludgery wouldn't be needed... */
-static int i16_find_free_vec_range()
-{
- /* i will track the first vector in a range;
- j will track the last. */
- int i, j;
- struct far_pointer_16 iv, jv;
-
- j = 0xff;
- i16_dos_get_int_vec(j, &jv);
-
- for (i = j-1; ; i--)
- {
- if (i == 0x50)
- {
- /* No completely free sets found.
- Stop here and just use 0x50-0x57. */
- break;
- }
-
- i16_dos_get_int_vec(i, &iv);
- if ((iv.ofs != jv.ofs) || (iv.seg != jv.seg))
- {
- /* Vector contents changed. */
- j = i;
- jv = iv;
- continue;
- }
-
- if ((j-i+1 >= 8) && ((i & 7) == 0))
- {
- /* Found a free range. */
- break;
- }
- }
-
- return i;
-}
-
-void i16_vcpi_check()
-{
- extern vm_offset_t dos_mem_phys_free_mem;
- extern vm_offset_t dos_mem_phys_free_size;
- extern void pmode_return();
- extern vm_offset_t boot_image_pa;
- extern void (*i16_switch_to_real_mode)();
- extern void (*i16_switch_to_pmode)();
-
- unsigned short rc;
- unsigned short first_free_pte;
- unsigned short vcpi_ver;
-
- i16_assert(boot_image_pa == kvtophys(0));
-
- /* Check for presence of EMM driver. */
- {
- int dev_info, out_status;
- int fh;
-
- fh = i16_dos_open("EMMXXXX0", 0);
- if (fh < 0)
- return;
- dev_info = i16_dos_get_device_info(fh);
- out_status = i16_dos_get_output_status(fh);
- i16_dos_close(fh);
- if ((dev_info < 0) || !(dev_info & 0x80)
- || (out_status != 0xff))
- return;
- }
-
- /* Allocate an EMS page to force the EMM to be turned on.
- If it fails, keep going anyway -
- it may simply mean all the EMS pages are allocated. */
- asm volatile("int $0x67"
- : "=a" (rc),
- "=d" (ems_handle)
- : "a" ((unsigned short)0x4300),
- "b" ((unsigned short)1));
- if (!(rc & 0xff00))
- ems_page_allocated = TRUE;
-
- /* Check for VCPI. */
- asm volatile("int $0x67" : "=a" (rc), "=b" (vcpi_ver) : "a" ((unsigned short)0xde00));
- if (rc & 0xff00)
- return;
- i16_assert(vcpi_ver >= 0x0100);
-
- /* OK, it's there - we're now committed to using VCPI. */
- i16_switch_to_real_mode = i16_vcpi_switch_to_real_mode;
- i16_switch_to_pmode = i16_vcpi_switch_to_pmode;
- real_int = vcpi_real_int;
- real_exit = vcpi_exit;
-
- do_debug(i16_puts("VCPI detected"));
-
- /* Allocate a page directory and page table from low DOS memory. */
- {
- vm_offset_t new_dos_mem;
-
- new_dos_mem = ((dos_mem_phys_free_mem + PAGE_MASK) & ~PAGE_MASK)
- + PAGE_SIZE*2;
- if ((!dos_mem_phys_free_mem)
- || (new_dos_mem - dos_mem_phys_free_mem
- > dos_mem_phys_free_size))
- i16_die("not enough low DOS memory available");
- dos_mem_phys_free_size -= new_dos_mem - dos_mem_phys_free_mem;
- dos_mem_phys_free_mem = new_dos_mem;
- vcpi_pdir = new_dos_mem - PAGE_SIZE*2;
- vcpi_ptable0 = vcpi_pdir + PAGE_SIZE;
- }
-
- /* Initialize them. */
- {
- int i;
- pt_entry_t pde0 = vcpi_ptable0
- | INTEL_PTE_VALID | INTEL_PTE_WRITE | INTEL_PTE_USER;
-
- set_fs(vcpi_pdir >> 4);
- asm volatile("movl %0,%%fs:(0)" : : "r" (pde0));
- for (i = 1; i < NPDES + NPTES; i++)
- asm volatile("movl $0,%%fs:(,%0,4)" : : "r" (i));
- }
-
- /* Initialize the protected-mode interface. */
- asm volatile("
- pushw %%es
- movw %4,%%es
- int $0x67
- popw %%es
- "
- : "=a" (rc),
- "=b" (vcpi_pmode_entry.ofs),
- "=D" (first_free_pte)
- : "a" ((unsigned short)0xde01),
- "r" ((unsigned short)(vcpi_ptable0 >> 4)),
- "D" (0),
- "S" (&cpu[0].tables.gdt[VCPI_CS_IDX]));
- i16_assert((rc & 0xff00) == 0);
- i16_assert(get_ds() == get_cs());
- i16_assert(get_es() == get_cs());
-
-#ifdef DEBUG
- /* Sanity check: make sure the server did what it was supposed to do. */
-
- i16_assert((cpu[0].tables.gdt[VCPI_CS_IDX].access & ACC_P|ACC_CODE) == ACC_P|ACC_CODE);
- if (cpu[0].tables.gdt[VCPI_CS_IDX].granularity & SZ_G)
- i16_assert(vcpi_pmode_entry.ofs <
- (((vm_offset_t)cpu[0].tables.gdt[VCPI_CS_IDX].limit_high << 28)
- | ((vm_offset_t)cpu[0].tables.gdt[VCPI_CS_IDX].limit_low << 12)
- | (vm_offset_t)0xfff));
- else
- i16_assert(vcpi_pmode_entry.ofs <
- (((vm_offset_t)cpu[0].tables.gdt[VCPI_CS_IDX].limit_high << 16)
- | (vm_offset_t)cpu[0].tables.gdt[VCPI_CS_IDX].limit_low));
-
- i16_assert(first_free_pte/sizeof(pt_entry_t) >= 1*1024*1024/PAGE_SIZE);
- i16_assert(first_free_pte/sizeof(pt_entry_t) <= 4*1024*1024/PAGE_SIZE);
-
- {
- int i;
-
- for (i = 0; i < 1*1024*1024/PAGE_SIZE; i++)
- {
- pt_entry_t entry;
-
- set_ds(vcpi_ptable0 >> 4);
- entry = ((pt_entry_t*)0)[i];
- set_ds(get_cs());
- i16_assert(entry & INTEL_PTE_VALID);
- if (i < 0xf0000/PAGE_SIZE)
- i16_assert(entry & INTEL_PTE_WRITE);
- i16_assert(entry & INTEL_PTE_USER);
- i16_assert(!(entry & INTEL_PTE_AVAIL));
- }
- }
-#endif /* DEBUG */
-
- /* Find the VCPI server's hardware interrupt vector mappings. */
- asm volatile("int $0x67"
- : "=a" (rc),
- "=b" (irq_master_base),
- "=c" (irq_slave_base)
- : "a" ((unsigned short)0xde0a));
- i16_assert((rc & 0xff00) == 0);
- irq_master_base &= 0xffff;
- irq_slave_base &= 0xffff;
- i16_assert((irq_master_base & 7) == 0);
- i16_assert((irq_master_base == 0x08) || (irq_master_base >= 0x20));
- i16_assert((irq_slave_base & 7) == 0);
- i16_assert(irq_slave_base >= 0x20);
-
- /* If they're the usual DOS values, change them. */
- if (irq_master_base == 0x08)
- {
- pic_reprogrammed = TRUE;
-
- i16_cli();
-
- irq_master_base = i16_find_free_vec_range();
-
- /* Save the old vectors in that range
- and set them to a copy of vectors 8-15. */
- {
- int i;
-
- for (i = 0; i < 8; i++)
- {
- struct far_pointer_16 hw_vec;
-
- i16_dos_get_int_vec(irq_master_base+i,
- &master_save_vecs[i]);
- i16_dos_get_int_vec(0x08+i, &hw_vec);
- i16_dos_set_int_vec(irq_master_base+i, &hw_vec);
- }
- }
-
- /* Reprogram the PIC. */
- i16_pic_set_master(irq_master_base);
-
- /* Inform the VCPI server. */
- i16_vcpi_set_int_vecs(irq_master_base, irq_slave_base);
- }
-
- /* Initialize the switch-to-pmode data structure. */
- vcpi_switch_data.phys_pdir = vcpi_pdir;
- vcpi_switch_data.lin_gdt = boot_image_pa+(vm_offset_t)&gdt_pdesc.limit;
- vcpi_switch_data.lin_idt = boot_image_pa+(vm_offset_t)&idt_pdesc.limit;
- vcpi_switch_data.tss_sel = KERNEL_TSS;
- vcpi_switch_data.entry_eip = (unsigned short)(vm_offset_t)&pmode_return;
- vcpi_switch_data.entry_cs = KERNEL_16_CS;
-
- /* Initialize the GDT and IDT pseudo-descriptors. */
- gdt_pdesc.limit = sizeof(cpu[0].tables.gdt)-1;
- gdt_pdesc.linear_base = boot_image_pa + (vm_offset_t)&cpu[0].tables.gdt;
- idt_pdesc.limit = sizeof(cpu[0].tables.idt)-1;
- idt_pdesc.linear_base = boot_image_pa + (vm_offset_t)&cpu[0].tables.idt;
-
- /* Set the GDT to temporary settings
- just for getting into pmode the first time. */
- i16_gdt_init_temp();
-
- /* VCPI insists on loading a TSS immediately on entering pmode,
- so initialize the KERNEL_TSS descriptor in the GDT. */
- i16_fill_gdt_descriptor(&cpu[0], KERNEL_TSS,
- boot_image_pa + (vm_offset_t)&cpu[0].tables.tss,
- sizeof(cpu[0].tables.tss)-1,
- ACC_PL_K|ACC_TSS, 0);
- cpu[0].tables.tss.io_bit_map_offset = sizeof(cpu[0].tables.tss);
-
-#if 0
- /* Dump the various VCPI data structures, for debugging. */
- {
- int i;
-
- i16_puts("Switch data");
- i16_writehexl(switch_data.phys_pdir); i16_putchar(' ');
- i16_writehexl(switch_data.lin_gdt); i16_putchar(' ');
- i16_writehexl(switch_data.lin_idt); i16_putchar(' ');
- i16_writehexw(switch_data.ldt_sel); i16_putchar(' ');
- i16_writehexw(switch_data.tss_sel); i16_putchar(' ');
- i16_writehexl(switch_data.entry_eip); i16_putchar(' ');
- i16_writehexw(switch_data.entry_cs); i16_puts("");
-
- i16_puts("GDT pdesc");
- i16_writehexw(gdt_pdesc.limit); i16_putchar(' ');
- i16_writehexl(gdt_pdesc.linear_base); i16_puts("");
-
- i16_puts("IDT pdesc");
- i16_writehexw(idt_pdesc.limit); i16_putchar(' ');
- i16_writehexl(idt_pdesc.linear_base); i16_puts("");
-
- i16_puts("GDT");
- for (i = 0; i < GDTSZ; i++)
- {
- i16_writehexw(i*8); i16_putchar(' ');
- i16_writehexll(*((long long*)&cpu[0].tables.gdt[i]));
- i16_puts("");
- }
- }
-#endif
-
- /* Switch into pmode briefly to initialize the CPU tables and such. */
- i16_vcpi_switch_to_pmode();
- i16_do_32bit(
-
- /* Note that right now we can only access the first 1MB of memory,
- because paging is enabled and that's the only memory region that's been mapped.
- The rest of physical memory won't be mapped until VCPI_PAGING_INIT,
- but VCPI_PAGING_INIT requires allocating memory for page tables,
- and we can't call phys_mem_collect() to provide memory to the allocator
- until all physical memory can be read and written.
- To get out of this catch-22,
- we call dos_mem_collect() beforehand here
- to make low DOS memory available for allocation by VCPI_PAGING_INIT.
- The call to phys_mem_collect() later will cause dos_mem_collect
- to be called a second time, but it'll just do nothing then. */
- dos_mem_collect();
-
- /* Initialize the basic CPU tables. */
- cpu_init(&cpu[0]);
-
- /* Initialize the paging system. */
- VCPI_PAGING_INIT(vcpi_pdir, (vm_offset_t)first_free_pte / 4 * PAGE_SIZE);
-
- /* Now that we can access all physical memory,
- collect the remaining memory regions we discovered while in 16-bit mode
- and add them to our free memory list. */
- phys_mem_collect();
-
- /* Initialize the hardware interrupt vectors in the IDT. */
- idt_irq_init();
-
- /* Now that we have an initialized LDT descriptor, start using it. */
- KERNEL_LDT_INIT();
-
- /* Switch to real mode and back again once more,
- to make sure everything's loaded properly. */
- do_16bit(
- i16_vcpi_switch_to_real_mode();
- i16_vcpi_switch_to_pmode();
- );
-
- vcpi_start();
- );
-}
-
-/* Shouldn't be necessary, but just in case the end of the above function,
- containing the .code16, gets "optimized away"... */
-CODE16
-
-void i16_vcpi_shutdown()
-{
- if (pic_reprogrammed)
- {
- pic_reprogrammed = FALSE;
-
- i16_cli();
-
- i16_assert(irq_master_base >= 0x20);
-
- /* Reprogram the PIC. */
- i16_pic_set_master(0x08);
-
- /* Inform the VCPI server. */
- i16_vcpi_set_int_vecs(0x08, irq_slave_base);
-
- /* Restore the old interrupt vectors. */
- {
- int i;
-
- for (i = 0; i < 8; i++)
- {
- i16_dos_set_int_vec(irq_master_base+i,
- &master_save_vecs[i]);
- }
- }
-
- i16_sti();
- }
-
- if (ems_page_allocated)
- {
- ems_page_allocated = 0;
- asm volatile("int $0x67" : : "a" (0x4500), "d" (ems_handle));
- }
-}
-
-#endif ENABLE_VCPI
-
diff --git a/i386/dos/i16/i16_xms.c b/i386/dos/i16/i16_xms.c
deleted file mode 100644
index ba75d5c..0000000
--- a/i386/dos/i16/i16_xms.c
+++ /dev/null
@@ -1,175 +0,0 @@
-/*
- * Copyright (c) 1995-1994 The University of Utah and
- * the Computer Systems Laboratory at the University of Utah (CSL).
- * All rights reserved.
- *
- * Permission to use, copy, modify and distribute this software is hereby
- * granted provided that (1) source code retains these copyright, permission,
- * and disclaimer notices, and (2) redistributions including binaries
- * reproduce the notices in supporting documentation, and (3) all advertising
- * materials mentioning features or use of this software display the following
- * acknowledgement: ``This product includes software developed by the
- * Computer Systems Laboratory at the University of Utah.''
- *
- * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
- * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
- * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * CSL requests users of this software to return to csl-dist@cs.utah.edu any
- * improvements that they make and grant CSL redistribution rights.
- *
- * Author: Bryan Ford, University of Utah CSL
- */
-
-#include <mach/machine/code16.h>
-#include <mach/machine/vm_types.h>
-#include <mach/machine/far_ptr.h>
-#include <mach/machine/asm.h>
-
-#include "i16_a20.h"
-#include "phys_mem.h"
-#include "debug.h"
-
-
-struct far_pointer_16 xms_control;
-
-#define CALL_XMS "lcallw "SEXT(xms_control)
-
-
-static vm_offset_t xms_phys_free_mem;
-static vm_size_t xms_phys_free_size;
-
-static short free_handle;
-static char free_handle_allocated;
-static char free_handle_locked;
-
-
-CODE32
-
-void xms_mem_collect(void)
-{
- if (xms_phys_free_mem)
- {
- phys_mem_add(xms_phys_free_mem, xms_phys_free_size);
- xms_phys_free_mem = 0;
- }
-}
-
-CODE16
-
-static void i16_xms_enable_a20(void)
-{
- short success;
- asm volatile(CALL_XMS : "=a" (success) : "a" (0x0500) : "ebx");
- if (!success)
- i16_die("XMS error: can't enable A20 line");
-}
-
-static void i16_xms_disable_a20(void)
-{
- short success;
- asm volatile(CALL_XMS : "=a" (success) : "a" (0x0600) : "ebx");
- if (!success)
- i16_die("XMS error: can't disable A20 line");
-}
-
-void i16_xms_check()
-{
- unsigned short rc;
- unsigned short free_k;
-
- /* Check for an XMS server. */
- asm volatile("
- int $0x2f
- " : "=a" (rc)
- : "a" (0x4300));
- if ((rc & 0xff) != 0x80)
- return;
-
- /* Get XMS driver's control function. */
- asm volatile("
- pushl %%ds
- pushl %%es
- int $0x2f
- movw %%es,%0
- popl %%es
- popl %%ds
- " : "=r" (xms_control.seg), "=b" (xms_control.ofs)
- : "a" (0x4310));
-
- /* See how much memory is available. */
- asm volatile(CALL_XMS
- : "=a" (free_k)
- : "a" (0x0800)
- : "ebx", "edx");
- if (free_k * 1024 == 0)
- return;
-
- xms_phys_free_size = (unsigned)free_k * 1024;
-
- /* Grab the biggest memory block we can get. */
- asm volatile(CALL_XMS
- : "=a" (rc), "=d" (free_handle)
- : "a" (0x0900), "d" (free_k)
- : "ebx");
- if (!rc)
- i16_die("XMS error: can't allocate extended memory");
-
- free_handle_allocated = 1;
-
- /* Lock it down. */
- asm volatile(CALL_XMS "
- shll $16,%%edx
- movw %%bx,%%dx
- " : "=a" (rc), "=d" (xms_phys_free_mem)
- : "a" (0x0c00), "d" (free_handle)
- : "ebx");
- if (!rc)
- i16_die("XMS error: can't lock down extended memory");
-
- free_handle_locked = 1;
-
- /* We need to update phys_mem_max here
- instead of just letting phys_mem_add() do it
- when the memory is collected with phys_mem_collect(),
- because VCPI initialization needs to know the top of physical memory
- before phys_mem_collect() is called.
- See i16_vcpi.c for the gross details. */
- if (phys_mem_max < xms_phys_free_mem + xms_phys_free_size)
- phys_mem_max = xms_phys_free_mem + xms_phys_free_size;
-
- i16_enable_a20 = i16_xms_enable_a20;
- i16_disable_a20 = i16_xms_disable_a20;
-
- do_debug(i16_puts("XMS detected"));
-}
-
-void i16_xms_shutdown()
-{
- unsigned short rc;
-
- if (free_handle_locked)
- {
- /* Unlock our memory block. */
- asm volatile(CALL_XMS
- : "=a" (rc)
- : "a" (0x0d00), "d" (free_handle)
- : "ebx");
- free_handle_locked = 0;
- if (!rc)
- i16_die("XMS error: can't unlock extended memory");
- }
-
- if (free_handle_allocated)
- {
- /* Free the memory block. */
- asm volatile(CALL_XMS
- : "=a" (rc)
- : "a" (0x0a00), "d" (free_handle)
- : "ebx");
- free_handle_allocated = 0;
- if (!rc)
- i16_die("XMS error: can't free extended memory");
- }
-}
-
diff --git a/i386/dos/i16/idt.h b/i386/dos/i16/idt.h
deleted file mode 100644
index 5469196..0000000
--- a/i386/dos/i16/idt.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (c) 1995-1994 The University of Utah and
- * the Computer Systems Laboratory at the University of Utah (CSL).
- * All rights reserved.
- *
- * Permission to use, copy, modify and distribute this software is hereby
- * granted provided that (1) source code retains these copyright, permission,
- * and disclaimer notices, and (2) redistributions including binaries
- * reproduce the notices in supporting documentation, and (3) all advertising
- * materials mentioning features or use of this software display the following
- * acknowledgement: ``This product includes software developed by the
- * Computer Systems Laboratory at the University of Utah.''
- *
- * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
- * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
- * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * CSL requests users of this software to return to csl-dist@cs.utah.edu any
- * improvements that they make and grant CSL redistribution rights.
- *
- * Author: Bryan Ford, University of Utah CSL
- */
-#ifndef _I386_DOS_IDT_
-#define _I386_DOS_IDT_
-
-#include "config.h"
-
-#ifdef ENABLE_VCPI
-
-/* We need a maximum-size IDT in order to run as a VCPI client,
- because someone else may already have reprogrammed the PIC
- to point to any set of vectors. */
-#define IDTSZ 256
-
-#endif ENABLE_VCPI
-
-#include_next "idt.h"
-
-#endif _I386_DOS_IDT_
diff --git a/i386/dos/i16/phys_mem_sources.h b/i386/dos/i16/phys_mem_sources.h
deleted file mode 100644
index 249e14a..0000000
--- a/i386/dos/i16/phys_mem_sources.h
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright (c) 1995-1994 The University of Utah and
- * the Computer Systems Laboratory at the University of Utah (CSL).
- * All rights reserved.
- *
- * Permission to use, copy, modify and distribute this software is hereby
- * granted provided that (1) source code retains these copyright, permission,
- * and disclaimer notices, and (2) redistributions including binaries
- * reproduce the notices in supporting documentation, and (3) all advertising
- * materials mentioning features or use of this software display the following
- * acknowledgement: ``This product includes software developed by the
- * Computer Systems Laboratory at the University of Utah.''
- *
- * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
- * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
- * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * CSL requests users of this software to return to csl-dist@cs.utah.edu any
- * improvements that they make and grant CSL redistribution rights.
- *
- * Author: Bryan Ford, University of Utah CSL
- */
-
-pms(dos_mem)
-pms(xms_mem)
-/*pms(vcpi_mem) XXX */
-
-#include_next "phys_mem_sources.h"