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-rw-r--r--i386/pc/NOTES34
-rw-r--r--i386/pc/debug.h71
-rw-r--r--i386/pc/exit.c32
-rw-r--r--i386/pc/gdt.h32
-rw-r--r--i386/pc/gdt_sels.h34
-rw-r--r--i386/pc/i16/i16_a20.c144
-rw-r--r--i386/pc/i16/i16_a20.h32
-rw-r--r--i386/pc/i16/i16_bios.h98
-rw-r--r--i386/pc/i16/i16_exit.c37
-rw-r--r--i386/pc/i16/i16_ext_mem.c151
-rw-r--r--i386/pc/i16/i16_init.c67
-rw-r--r--i386/pc/i16/i16_main.c38
-rw-r--r--i386/pc/i16/i16_pic.c66
-rw-r--r--i386/pc/i16/i16_putchar.c36
-rw-r--r--i386/pc/i16/i16_raw.c265
-rw-r--r--i386/pc/i16/i16_raw_test_a20.S35
-rw-r--r--i386/pc/i16/i16_real_int.S84
-rw-r--r--i386/pc/i16/i16_switch.h30
-rw-r--r--i386/pc/i16/phys_mem_collect.c34
-rw-r--r--i386/pc/i16/phys_mem_sources.h25
-rw-r--r--i386/pc/i16/raw_exit.c41
-rw-r--r--i386/pc/i16/raw_real_int.c46
-rw-r--r--i386/pc/ipl.h74
-rw-r--r--i386/pc/irq.h49
-rw-r--r--i386/pc/irq_list.h43
-rw-r--r--i386/pc/pc_asm.sym42
-rw-r--r--i386/pc/phys_mem.h55
-rw-r--r--i386/pc/phys_mem_add.c62
-rw-r--r--i386/pc/pic.c283
-rw-r--r--i386/pc/pic.h204
-rw-r--r--i386/pc/putchar.c96
-rw-r--r--i386/pc/real.h60
-rw-r--r--i386/pc/real_tss.c59
-rw-r--r--i386/pc/real_tss.h34
-rw-r--r--i386/pc/real_tss_def.S35
-rw-r--r--i386/pc/rv86/config.h29
-rw-r--r--i386/pc/rv86/gdt_sels.h60
-rw-r--r--i386/pc/rv86/idt_irq_init.c40
-rw-r--r--i386/pc/rv86/rv86_real_int.c276
-rw-r--r--i386/pc/rv86/rv86_real_int_asm.S119
-rw-r--r--i386/pc/rv86/rv86_reflect_irq.S113
-rw-r--r--i386/pc/rv86/rv86_trap_handler.S167
-rw-r--r--i386/pc/rv86/trap_handler.S39
43 files changed, 0 insertions, 3371 deletions
diff --git a/i386/pc/NOTES b/i386/pc/NOTES
deleted file mode 100644
index d165aa4..0000000
--- a/i386/pc/NOTES
+++ /dev/null
@@ -1,34 +0,0 @@
-
-
-i16_raw.c:
- Provides a default implementation
- of real/pmode switching code.
- Assumes that, as far as it's concerned,
- low linear address always map to physical addresses.
- (The low linear mappings can be changed,
- but must be changed back before switching back to real mode.)
-
- Provides:
- i16_raw_switch_to_pmode()
- i16_raw_switch_to_real_mode()
-
- i16_raw_start()
- Called in real mode.
- Initializes the pmode switching system,
- switches to pmode for the first time,
- and calls the 32-bit function raw_start().
-
- Depends on:
-
- paging.h:
- raw_paging_enable()
- raw_paging_disable()
- raw_paging_init()
-
- a20.h:
- i16_enable_a20()
- i16_disable_a20()
-
- real.h:
- real_cs
-
diff --git a/i386/pc/debug.h b/i386/pc/debug.h
deleted file mode 100644
index 6265082..0000000
--- a/i386/pc/debug.h
+++ /dev/null
@@ -1,71 +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 _KUKM_I386_PC_DEBUG_H_
-#define _KUKM_I386_PC_DEBUG_H_
-
-#ifdef ASSEMBLER
-#ifdef DEBUG
-
-
-/* Poke a character directly onto the VGA text display,
- as a very quick, mostly-reliable status indicator.
- Assumes ss is a kernel data segment register. */
-#define POKE_STATUS(char,scratch) \
- ss/*XXX gas bug */ ;\
- movl %ss:_phys_mem_va,scratch ;\
- addl $0xb8000+80*2*13+40*2,scratch ;\
- movb char,%ss:(scratch) ;\
- movb $0xf0,%ss:1(scratch)
-
-
-#else !DEBUG
-
-#define POKE_STATUS(char,scratch)
-
-#endif !DEBUG
-#else !ASSEMBLER
-#ifdef DEBUG
-
-#include <mach/machine/vm_types.h>
-
-
-#define POKE_STATUS(string) \
- ({ unsigned char *s = (string); \
- extern vm_offset_t phys_mem_va; \
- short *d = (short*)(phys_mem_va+0xb8000+80*2*13+40*2); \
- while (*s) { (*d++) = 0x3000 | (*s++); } \
- *d = ' '; \
- })
-
-
-#else !DEBUG
-
-#define POKE_STATUS(char)
-
-#endif !DEBUG
-#endif !ASSEMBLER
-
-
-#include_next "debug.h"
-
-#endif _KUKM_I386_PC_DEBUG_H_
diff --git a/i386/pc/exit.c b/i386/pc/exit.c
deleted file mode 100644
index 59c9383..0000000
--- a/i386/pc/exit.c
+++ /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
- */
-
-#include "real.h"
-
-void _exit(int rc)
-{
- about_to_die(rc);
-
- (*real_exit)(rc);
-}
-
diff --git a/i386/pc/gdt.h b/i386/pc/gdt.h
deleted file mode 100644
index 8dae857..0000000
--- a/i386/pc/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
- */
-
-#include_next "gdt.h"
-
-/* If we have a REAL_TSS, use that as our DEFAULT_TSS if necessary.
- (The DEFAULT_TSS gets loaded by cpu_tables_load() upon switching to pmode.) */
-#if defined(ENABLE_REAL_TSS) && !defined(DEFAULT_TSS)
-#define DEFAULT_TSS REAL_TSS
-#define DEFAULT_TSS_IDX REAL_TSS_IDX
-#endif
-
diff --git a/i386/pc/gdt_sels.h b/i386/pc/gdt_sels.h
deleted file mode 100644
index 18e0907..0000000
--- a/i386/pc/gdt_sels.h
+++ /dev/null
@@ -1,34 +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_next "gdt_sels.h"
-
-#ifdef ENABLE_REAL_TSS
-
-/* This is a special TSS with a full IO bitmap
- that allows access to all I/O ports in v86 mode.
- It's used for making calls to the real-mode BIOS (or DOS). */
-gdt_sel(REAL_TSS)
-
-#endif
-
diff --git a/i386/pc/i16/i16_a20.c b/i386/pc/i16/i16_a20.c
deleted file mode 100644
index 5e91f86..0000000
--- a/i386/pc/i16/i16_a20.c
+++ /dev/null
@@ -1,144 +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/pio.h>
-#include <mach/machine/code16.h>
-
-#include "i16_a20.h"
-
-
-/* Keyboard stuff for turning on the A20 address line (gak!). */
-#define K_RDWR 0x60 /* keyboard data & cmds (read/write) */
-#define K_STATUS 0x64 /* keyboard status (read-only) */
-#define K_CMD 0x64 /* keybd ctlr command (write-only) */
-
-#define K_OBUF_FUL 0x01 /* output buffer full */
-#define K_IBUF_FUL 0x02 /* input buffer full */
-
-#define KC_CMD_WIN 0xd0 /* read output port */
-#define KC_CMD_WOUT 0xd1 /* write output port */
-
-#define KB_ENABLE_A20 0xdf /* Linux and my BIOS uses this,
- and I trust them more than Mach 3.0,
- but I'd like to know what the difference is
- and if it matters. */
- /*0x9f*/ /* enable A20,
- enable output buffer full interrupt
- enable data line
- disable clock line */
-#define KB_DISABLE_A20 0xdd
-
-
-CODE16
-
-
-/*
- This routine ensures that the keyboard command queue is empty
- (after emptying the output buffers)
-
- No timeout is used - if this hangs there is something wrong with
- the machine, and we probably couldn't proceed anyway.
- XXX should at least die properly
-*/
-static void i16_empty_8042(void)
-{
- int status;
-
-retry:
- i16_nanodelay(1000);
- status = i16_inb(K_STATUS);
-
- if (status & K_OBUF_FUL)
- {
- i16_nanodelay(1000);
- i16_inb(K_RDWR);
- goto retry;
- }
-
- if (status & K_IBUF_FUL)
- goto retry;
-}
-
-int i16_raw_test_a20(void);
-
-/* Enable the A20 address line. */
-void i16_raw_enable_a20(void)
-{
- int v;
-
- /* XXX try int 15h function 24h */
-
- if (i16_raw_test_a20())
- return;
-
- /* PS/2 */
- v = i16_inb(0x92);
- i16_nanodelay(1000);
- i16_outb(0x92,v | 2);
-
- if (i16_raw_test_a20())
- return;
-
- /* AT */
- i16_empty_8042();
- i16_outb(K_CMD, KC_CMD_WOUT);
- i16_empty_8042();
- i16_outb(K_RDWR, KB_ENABLE_A20);
- i16_empty_8042();
-
- /* Wait until the a20 line gets enabled. */
- while (!i16_raw_test_a20());
-}
-
-/* Disable the A20 address line. */
-void i16_raw_disable_a20(void)
-{
- int v;
-
- if (!i16_raw_test_a20())
- return;
-
- /* PS/2 */
- v = i16_inb(0x92);
- i16_nanodelay(1000);
- i16_outb(0x92, v & ~2);
-
- if (!i16_raw_test_a20())
- return;
-
- /* AT */
- i16_empty_8042();
- i16_outb(K_CMD, KC_CMD_WOUT);
- i16_empty_8042();
- i16_outb(K_RDWR, KB_DISABLE_A20);
- i16_empty_8042();
-
- /* Wait until the a20 line gets disabled. */
- while (i16_raw_test_a20());
-}
-
-
-void (*i16_enable_a20)(void) = i16_raw_enable_a20;
-void (*i16_disable_a20)(void) = i16_raw_disable_a20;
-
diff --git a/i386/pc/i16/i16_a20.h b/i386/pc/i16/i16_a20.h
deleted file mode 100644
index afe124b..0000000
--- a/i386/pc/i16/i16_a20.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_PC_A20_H_
-#define _I386_PC_A20_H_
-
-/* By default these point to the "raw" routines in pc/a20.c.
- They can be revectored to other routines,
- e.g. to use a HIMEM driver's facilities. */
-extern void (*i16_enable_a20)(void);
-extern void (*i16_disable_a20)(void);
-
-#endif _I386_PC_A20_H_
diff --git a/i386/pc/i16/i16_bios.h b/i386/pc/i16/i16_bios.h
deleted file mode 100644
index 29dc2d8..0000000
--- a/i386/pc/i16/i16_bios.h
+++ /dev/null
@@ -1,98 +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 _I16_BIOS_H_
-#define _I16_BIOS_H_
-
-#include <mach/inline.h>
-
-
-MACH_INLINE void i16_bios_putchar(int c)
-{
- asm volatile("int $0x10" : : "a" (0x0e00 | (c & 0xff)), "b" (0x07));
-}
-
-MACH_INLINE int i16_bios_getchar()
-{
- int c;
- asm volatile("int $0x16" : "=a" (c) : "a" (0x0000));
- c &= 0xff;
- return c;
-}
-
-MACH_INLINE void i16_bios_warm_boot(void)
-{
- asm volatile("
- cli
- movw $0x40,%ax
- movw %ax,%ds
- movw $0x1234,0x72
- ljmp $0xffff,$0x0000
- ");
-}
-
-MACH_INLINE void i16_bios_cold_boot(void)
-{
- asm volatile("
- cli
- movw $0x40,%ax
- movw %ax,%ds
- movw $0x0000,0x72
- ljmp $0xffff,$0x0000
- ");
-}
-
-MACH_INLINE unsigned char i16_bios_copy_ext_mem(
- unsigned src_la, unsigned dest_la, unsigned short word_count)
-{
- char buf[48];
- unsigned short i, rc;
-
- /* Initialize the descriptor structure. */
- for (i = 0; i < sizeof(buf); i++)
- buf[i] = 0;
- *((unsigned short*)(buf+0x10)) = 0xffff; /* source limit */
- *((unsigned long*)(buf+0x12)) = src_la; /* source linear address */
- *((unsigned char*)(buf+0x15)) = 0x93; /* source access rights */
- *((unsigned short*)(buf+0x18)) = 0xffff; /* dest limit */
- *((unsigned long*)(buf+0x1a)) = dest_la; /* dest linear address */
- *((unsigned char*)(buf+0x1d)) = 0x93; /* dest access rights */
-
-#if 0
- i16_puts("buf:");
- for (i = 0; i < sizeof(buf); i++)
- i16_writehexb(buf[i]);
- i16_puts("");
-#endif
-
- /* Make the BIOS call to perform the copy. */
- asm volatile("
- int $0x15
- " : "=a" (rc)
- : "a" ((unsigned short)0x8700),
- "c" (word_count),
- "S" ((unsigned short)(unsigned)buf));
-
- return rc >> 8;
-}
-
-#endif _I16_BIOS_H_
diff --git a/i386/pc/i16/i16_exit.c b/i386/pc/i16/i16_exit.c
deleted file mode 100644
index 674033a..0000000
--- a/i386/pc/i16/i16_exit.c
+++ /dev/null
@@ -1,37 +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_bios.h"
-
-
-CODE16
-
-void i16_exit(int rc)
-{
- i16_puts("Press any key to reboot.");
- i16_bios_getchar();
- i16_bios_warm_boot();
-}
-
diff --git a/i386/pc/i16/i16_ext_mem.c b/i386/pc/i16/i16_ext_mem.c
deleted file mode 100644
index 08cbecf..0000000
--- a/i386/pc/i16/i16_ext_mem.c
+++ /dev/null
@@ -1,151 +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/proc_reg.h>
-
-#include "i16_bios.h"
-#include "phys_mem.h"
-#include "vm_param.h"
-#include "debug.h"
-
-
-static vm_offset_t ext_mem_phys_free_mem;
-static vm_size_t ext_mem_phys_free_size;
-
-
-CODE32
-
-int ext_mem_collect(void)
-{
- if (ext_mem_phys_free_mem)
- {
- phys_mem_add(ext_mem_phys_free_mem, ext_mem_phys_free_size);
- ext_mem_phys_free_mem = 0;
- }
-}
-
-CODE16
-
-void i16_ext_mem_check()
-{
- vm_offset_t ext_mem_top, ext_mem_bot;
- unsigned short ext_mem_k;
-
- /* Find the top of available extended memory. */
- asm volatile("
- int $0x15
- jnc 1f
- xorw %%ax,%%ax
- 1:
- " : "=a" (ext_mem_k)
- : "a" (0x8800));
- ext_mem_top = 0x100000 + (vm_offset_t)ext_mem_k * 1024;
-
- /* XXX check for >16MB memory using function 0xc7 */
-
- ext_mem_bot = 0x100000;
-
- /* Check for extended memory allocated bottom-up: method 1.
- This uses the technique (and, loosely, the code)
- described in the VCPI spec, version 1.0. */
- if (ext_mem_top > ext_mem_bot)
- {
- asm volatile("
- pushw %%es
-
- xorw %%ax,%%ax
- movw %%ax,%%es
- movw %%es:0x19*4+2,%%ax
- movw %%ax,%%es
-
- movw $0x12,%%di
- movw $7,%%cx
- rep
- cmpsb
- jne 1f
-
- xorl %%edx,%%edx
- movb %%es:0x2e,%%dl
- shll $16,%%edx
- movw %%es:0x2c,%%dx
-
- 1:
- popw %%es
- " : "=d" (ext_mem_bot)
- : "d" (ext_mem_bot),
- "S" ((unsigned short)(vm_offset_t)"VDISK V")
- : "eax", "ecx", "esi", "edi");
- }
- i16_assert(ext_mem_bot >= 0x100000);
-
- /* Check for extended memory allocated bottom-up: method 2.
- This uses the technique (and, loosely, the code)
- described in the VCPI spec, version 1.0. */
- if (ext_mem_top > ext_mem_bot)
- {
- struct {
- char pad1[3];
- char V;
- long DISK;
- char pad2[30-8];
- unsigned short addr;
- } buf;
- unsigned char rc;
-
- i16_assert(sizeof(buf) == 0x20);
- rc = i16_bios_copy_ext_mem(0x100000, kvtolin((vm_offset_t)&buf), sizeof(buf)/2);
- if ((rc == 0) && (buf.V == 'V') && (buf.DISK == 'DISK'))
- {
- vm_offset_t new_bot = (vm_offset_t)buf.addr << 10;
- i16_assert(new_bot > 0x100000);
- if (new_bot > ext_mem_bot)
- ext_mem_bot = new_bot;
- }
- }
- i16_assert(ext_mem_bot >= 0x100000);
-
- if (ext_mem_top > ext_mem_bot)
- {
- ext_mem_phys_free_mem = ext_mem_bot;
- ext_mem_phys_free_size = ext_mem_top - ext_mem_bot;
-
- /* 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 (ext_mem_top > phys_mem_max)
- phys_mem_max = ext_mem_top;
- }
-}
-
-void i16_ext_mem_shutdown()
-{
- /* We didn't actually allocate the memory,
- so no need to deallocate it... */
-}
-
diff --git a/i386/pc/i16/i16_init.c b/i386/pc/i16/i16_init.c
deleted file mode 100644
index 23a51df..0000000
--- a/i386/pc/i16/i16_init.c
+++ /dev/null
@@ -1,67 +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/proc_reg.h>
-
-#include "vm_param.h"
-
-
-/* Code segment we originally had when we started in real mode. */
-unsigned short real_cs;
-
-/* Virtual address of physical memory. */
-vm_offset_t phys_mem_va;
-
-/* Physical address of start of boot image. */
-vm_offset_t boot_image_pa;
-
-/* Upper limit of known physical memory. */
-vm_offset_t phys_mem_max;
-
-
-CODE16
-
-#include "i16_bios.h"
-
-/* Called by i16_crt0 (or the equivalent)
- to set up our basic 16-bit runtime environment
- before calling i16_main(). */
-void i16_init(void)
-{
- /* Find our code/data/everything segment. */
- real_cs = get_cs();
-
- /* Find out where in physical memory we got loaded. */
- boot_image_pa = real_cs << 4;
-
- /* Find out where the bottom of physical memory is.
- (We won't be able to directly use it for 32-bit accesses
- until we actually get into 32-bit mode.) */
- phys_mem_va = -boot_image_pa;
-
- /* The base of linear memory is at the same place,
- at least until we turn paging on. */
- linear_base_va = phys_mem_va;
-}
-
diff --git a/i386/pc/i16/i16_main.c b/i386/pc/i16/i16_main.c
deleted file mode 100644
index 328cceb..0000000
--- a/i386/pc/i16/i16_main.c
+++ /dev/null
@@ -1,38 +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>
-
-
-CODE16
-
-void i16_main(void)
-{
- i16_init();
-
- /* Grab all the memory we can find. */
- i16_ext_mem_check();
-
- i16_raw_start();
-}
-
diff --git a/i386/pc/i16/i16_pic.c b/i386/pc/i16/i16_pic.c
deleted file mode 100644
index 3ff2697..0000000
--- a/i386/pc/i16/i16_pic.c
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright (c) 1995 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/pio.h>
-
-#include "pic.h"
-#include "i16.h"
-
-CODE16
-
-/* Program the PICs to use a different set of interrupt vectors.
- Assumes processor I flag is off. */
-void i16_pic_set_master(int base)
-{
- unsigned char old_mask;
-
- /* Save the original interrupt mask. */
- old_mask = inb(MASTER_OCW); PIC_DELAY();
-
- /* Initialize the master PIC. */
- outb(MASTER_ICW, PICM_ICW1); PIC_DELAY();
- outb(MASTER_OCW, base); PIC_DELAY();
- outb(MASTER_OCW, PICM_ICW3); PIC_DELAY();
- outb(MASTER_OCW, PICM_ICW4); PIC_DELAY();
-
- /* Restore the original interrupt mask. */
- outb(MASTER_OCW, old_mask); PIC_DELAY();
-}
-
-void i16_pic_set_slave(int base)
-{
- unsigned char old_mask;
-
- /* Save the original interrupt mask. */
- old_mask = inb(SLAVES_OCW); PIC_DELAY();
-
- /* Initialize the slave PIC. */
- outb(SLAVES_ICW, PICS_ICW1); PIC_DELAY();
- outb(SLAVES_OCW, base); PIC_DELAY();
- outb(SLAVES_OCW, PICS_ICW3); PIC_DELAY();
- outb(SLAVES_OCW, PICS_ICW4); PIC_DELAY();
-
- /* Restore the original interrupt mask. */
- outb(SLAVES_OCW, old_mask); PIC_DELAY();
-}
-
diff --git a/i386/pc/i16/i16_putchar.c b/i386/pc/i16/i16_putchar.c
deleted file mode 100644
index 365f4f8..0000000
--- a/i386/pc/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_bios.h"
-
-CODE16
-
-void i16_putchar(int ch)
-{
- if (ch == '\n')
- i16_bios_putchar('\r');
- i16_bios_putchar(ch);
-}
-
diff --git a/i386/pc/i16/i16_raw.c b/i386/pc/i16/i16_raw.c
deleted file mode 100644
index 1f705d3..0000000
--- a/i386/pc/i16/i16_raw.c
+++ /dev/null
@@ -1,265 +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
- */
-/*
- This file rovides a default implementation
- of real/pmode switching code.
- Assumes that, as far as it's concerned,
- low linear address always map to physical addresses.
- (The low linear mappings can be changed,
- but must be changed back before switching back to real mode.)
-
- Provides:
- i16_raw_switch_to_pmode()
- i16_raw_switch_to_real_mode()
-
- i16_raw_start()
- Called in real mode.
- Initializes the pmode switching system,
- switches to pmode for the first time,
- and calls the 32-bit function raw_start().
-
- Depends on:
-
- paging.h:
- raw_paging_enable()
- raw_paging_disable()
- raw_paging_init()
-
- a20.h:
- i16_enable_a20()
- i16_disable_a20()
-
- real.h:
- real_cs
-*/
-
-#include <mach/boolean.h>
-#include <mach/machine/code16.h>
-#include <mach/machine/vm_param.h>
-#include <mach/machine/proc_reg.h>
-#include <mach/machine/pio.h>
-#include <mach/machine/seg.h>
-#include <mach/machine/eflags.h>
-#include <mach/machine/pmode.h>
-
-#include "config.h"
-#include "cpu.h"
-#include "i16.h"
-#include "vm_param.h"
-#include "pic.h"
-#include "debug.h"
-#include "i16_a20.h"
-#include "i16_switch.h"
-
-int irq_master_base, irq_slave_base;
-
-/* Set to true when everything is initialized properly. */
-static boolean_t inited;
-
-/* Saved value of eflags register for real mode. */
-static unsigned real_eflags;
-
-
-
-#ifdef ENABLE_PAGING
-#define RAW_PAGING_ENABLE() raw_paging_enable()
-#define RAW_PAGING_DISABLE() raw_paging_disable()
-#define RAW_PAGING_INIT() raw_paging_init()
-#else
-#define RAW_PAGING_ENABLE() ((void)0)
-#define RAW_PAGING_DISABLE() ((void)0)
-#define RAW_PAGING_INIT() ((void)0)
-#endif
-
-
-CODE16
-
-void i16_raw_switch_to_pmode()
-{
- /* No interrupts from now on please. */
- i16_cli();
-
- /* Save the eflags register for switching back later. */
- real_eflags = get_eflags();
-
- /* Enable the A20 address line. */
- i16_enable_a20();
-
- /* Load the GDT.
- Note that we have to do this each time we enter pmode,
- not just the first,
- because other real-mode programs may have switched to pmode
- and back again in the meantime, trashing the GDT pointer. */
- {
- struct pseudo_descriptor pdesc;
-
- pdesc.limit = sizeof(cpu[0].tables.gdt)-1;
- pdesc.linear_base = boot_image_pa
- + (vm_offset_t)&cpu[0].tables.gdt;
- i16_set_gdt(&pdesc);
- }
-
- /* Switch into protected mode. */
- i16_enter_pmode(KERNEL_16_CS);
-
- /* Reload all the segment registers from the new GDT. */
- set_ds(KERNEL_DS);
- set_es(KERNEL_DS);
- set_fs(0);
- set_gs(0);
- set_ss(KERNEL_DS);
-
- i16_do_32bit(
-
- if (inited)
- {
- /* Turn paging on if necessary. */
- RAW_PAGING_ENABLE();
-
- /* Load the CPU tables into the processor. */
- cpu_tables_load(&cpu[0]);
-
- /* Program the PIC so the interrupt vectors won't
- conflict with the processor exception vectors. */
- pic_init(PICM_VECTBASE, PICS_VECTBASE);
- }
-
- /* Make sure our flags register is appropriate. */
- set_eflags((get_eflags()
- & ~(EFL_IF | EFL_DF | EFL_NT))
- | EFL_IOPL_USER);
- );
-}
-
-void i16_raw_switch_to_real_mode()
-{
- /* Make sure interrupts are disabled. */
- cli();
-
- /* Avoid sending DOS bogus coprocessor exceptions.
- XXX should we save/restore all of CR0? */
- i16_clts();
-
- i16_do_32bit(
- /* Turn paging off if necessary. */
- RAW_PAGING_DISABLE();
-
- /* Reprogram the PIC back to the settings DOS expects. */
- pic_init(0x08, 0x70);
- );
-
- /* Make sure all the segment registers are 16-bit.
- The code segment definitely is already,
- because we're running 16-bit code. */
- set_ds(KERNEL_16_DS);
- set_es(KERNEL_16_DS);
- set_fs(KERNEL_16_DS);
- set_gs(KERNEL_16_DS);
- set_ss(KERNEL_16_DS);
-
- /* Switch back to real mode. */
- i16_leave_pmode(real_cs);
-
- /* Load the real-mode segment registers. */
- set_ds(real_cs);
- set_es(real_cs);
- set_fs(real_cs);
- set_gs(real_cs);
- set_ss(real_cs);
-
- /* Load the real-mode IDT. */
- {
- struct pseudo_descriptor pdesc;
-
- pdesc.limit = 0xffff;
- pdesc.linear_base = 0;
- i16_set_idt(&pdesc);
- }
-
- /* Disable the A20 address line. */
- i16_disable_a20();
-
- /* Restore the eflags register to its original real-mode state.
- Note that this will leave interrupts disabled
- since it was saved after the cli() above. */
- set_eflags(real_eflags);
-}
-
-void i16_raw_start()
-{
- /* Make sure we're not already in protected mode. */
- if (i16_get_msw() & CR0_PE)
- i16_die("The processor is in an unknown "
- "protected mode environment.");
-
- do_debug(i16_puts("Real mode detected"));
-
- /* Minimally initialize the GDT. */
- i16_gdt_init_temp();
-
- /* Switch to protected mode for the first time.
- This won't load all the processor tables and everything yet,
- since they're not fully initialized. */
- i16_raw_switch_to_pmode();
-
- /* We can now hop in and out of 32-bit mode at will. */
- i16_do_32bit(
-
- /* Now that we can access all physical memory,
- collect the memory regions we discovered while in 16-bit mode
- and add them to our free memory list.
- We can't do this before now because the free list nodes
- are stored in the free memory itself,
- which is probably out of reach of our 16-bit segments. */
- phys_mem_collect();
-
- /* Initialize paging if necessary.
- Do it before initializing the other processor tables
- because they might have to be located
- somewhere in high linear memory. */
- RAW_PAGING_INIT();
-
- /* Initialize the processor tables. */
- cpu_init(&cpu[0]);
-
- /* Initialize the hardware interrupt vectors in the IDT. */
- irq_master_base = PICM_VECTBASE;
- irq_slave_base = PICS_VECTBASE;
- idt_irq_init();
-
- inited = TRUE;
-
- /* Switch to real mode and back again once more,
- to make sure everything's loaded properly. */
- do_16bit(
- i16_raw_switch_to_real_mode();
- i16_raw_switch_to_pmode();
- );
-
- raw_start();
- );
-}
-
-void (*i16_switch_to_real_mode)() = i16_raw_switch_to_real_mode;
-void (*i16_switch_to_pmode)() = i16_raw_switch_to_pmode;
-
diff --git a/i386/pc/i16/i16_raw_test_a20.S b/i386/pc/i16/i16_raw_test_a20.S
deleted file mode 100644
index a934e12..0000000
--- a/i386/pc/i16/i16_raw_test_a20.S
+++ /dev/null
@@ -1,35 +0,0 @@
-
-#include <mach/machine/asm.h>
-
- .text
- .code16
-
-/*
- * Test the A20 address line; return true if it is enabled.
- */
-ENTRY(i16_raw_test_a20)
- xorw %ax,%ax
- movw %ax,%fs
- notw %ax
- movw %ax,%gs
-
- /* See if the values in already in the corresponding locations
- are the same. */
- movw %fs:0,%ax
- cmpw %gs:16,%ax
- jnz 1f
-
- /* Yes; try changing one and see if they're still the same. */
- movw %ax,%dx
- notw %ax
- movw %ax,%fs:0
- cmpw %gs:16,%ax
- movw %dx,%fs:0
- jnz 1f
-
- xorl %eax,%eax
- ret
-1:
- movl $1,%eax
- ret
-
diff --git a/i386/pc/i16/i16_real_int.S b/i386/pc/i16/i16_real_int.S
deleted file mode 100644
index f05077e..0000000
--- a/i386/pc/i16/i16_real_int.S
+++ /dev/null
@@ -1,84 +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 "pc_asm.h"
-
- .text
- .code16
-
-ENTRY(i16_real_int)
- pushf
- pushl %ebx
- pushl %esi
- pushl %edi
- pushl %ebp
-
- cli
-
- movl 6*4(%esp),%eax
- movb %al,1f+1
-
- movl 7*4(%esp),%ebp
- movl RCD_EAX(%ebp),%eax
- movl RCD_EBX(%ebp),%ebx
- movl RCD_ECX(%ebp),%ecx
- movl RCD_EDX(%ebp),%edx
- movl RCD_ESI(%ebp),%esi
- movl RCD_EDI(%ebp),%edi
- movw RCD_DS(%ebp),%ds
- movw RCD_ES(%ebp),%es
- /* XXX flags */
- movl RCD_EBP(%ebp),%ebp
-
-1: int $0
-
- pushl %ebp
- movl 8*4(%esp),%ebp
- popl RCD_EBP(%ebp)
-
- movl %eax,RCD_EAX(%ebp)
- movl %ebx,RCD_EBX(%ebp)
- movl %ecx,RCD_ECX(%ebp)
- movl %edx,RCD_EDX(%ebp)
- movl %esi,RCD_ESI(%ebp)
- movl %edi,RCD_EDI(%ebp)
- movw %ds,RCD_DS(%ebp)
- movw %es,RCD_ES(%ebp)
-
- pushf
- popl %eax
- movw %ax,RCD_FLAGS(%ebp)
-
- movw %ss,%ax
- movw %ax,%ds
- movw %ax,%es
-
- popl %ebp
- popl %edi
- popl %esi
- popl %ebx
- popf
- ret
-
diff --git a/i386/pc/i16/i16_switch.h b/i386/pc/i16/i16_switch.h
deleted file mode 100644
index b7ecf18..0000000
--- a/i386/pc/i16/i16_switch.h
+++ /dev/null
@@ -1,30 +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_PC_SWITCH_H_
-#define _I386_PC_SWITCH_H_
-
-/* Vectors to routines to switch between real and protected mode. */
-extern void (*i16_switch_to_real_mode)();
-extern void (*i16_switch_to_pmode)();
-
-#endif _I386_PC_SWITCH_H_
diff --git a/i386/pc/i16/phys_mem_collect.c b/i386/pc/i16/phys_mem_collect.c
deleted file mode 100644
index bcb0c09..0000000
--- a/i386/pc/i16/phys_mem_collect.c
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * Copyright (c) 1995 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/vm_param.h>
-
-#include "phys_mem.h"
-
-void phys_mem_collect(void)
-{
-#define pms(name) name##_collect();
-#include "phys_mem_sources.h"
-#undef pms
-}
-
diff --git a/i386/pc/i16/phys_mem_sources.h b/i386/pc/i16/phys_mem_sources.h
deleted file mode 100644
index 788910d..0000000
--- a/i386/pc/i16/phys_mem_sources.h
+++ /dev/null
@@ -1,25 +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(ext_mem)
-
diff --git a/i386/pc/i16/raw_exit.c b/i386/pc/i16/raw_exit.c
deleted file mode 100644
index 5ccb69a..0000000
--- a/i386/pc/i16/raw_exit.c
+++ /dev/null
@@ -1,41 +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/seg.h>
-#include <mach/machine/proc_reg.h>
-
-#include "i16.h"
-#include "debug.h"
-
-
-void raw_exit(int rc)
-{
- do_16bit(
- i16_raw_switch_to_real_mode();
- i16_exit(rc);
- while (1);
- );
-}
-
-void (*real_exit)(int rc) = raw_exit;
-
diff --git a/i386/pc/i16/raw_real_int.c b/i386/pc/i16/raw_real_int.c
deleted file mode 100644
index a76d8ca..0000000
--- a/i386/pc/i16/raw_real_int.c
+++ /dev/null
@@ -1,46 +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/seg.h>
-#include <mach/machine/proc_reg.h>
-
-#include "real.h"
-#include "i16.h"
-#include "debug.h"
-
-
-void raw_real_int(int intnum, struct real_call_data *rcd)
-{
- assert((get_cs() & 3) == 0);
-
- do_16bit(
- unsigned int eflags;
-
- i16_raw_switch_to_real_mode();
- i16_real_int(intnum, rcd);
- i16_raw_switch_to_pmode();
- );
-}
-
-void (*real_int)(int intnum, struct real_call_data *rcd) = raw_real_int;
-
diff --git a/i386/pc/ipl.h b/i386/pc/ipl.h
deleted file mode 100644
index 5f40660..0000000
--- a/i386/pc/ipl.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Mach Operating System
- * Copyright (c) 1991,1990,1989 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
- */
-/*
-Copyright (c) 1988,1989 Prime Computer, Inc. Natick, MA 01760
-All Rights Reserved.
-
-Permission to use, copy, modify, and distribute this
-software and its documentation for any purpose and
-without fee is hereby granted, provided that the above
-copyright notice appears in all copies and that both the
-copyright notice and this permission notice appear in
-supporting documentation, and that the name of Prime
-Computer, Inc. not be used in advertising or publicity
-pertaining to distribution of the software without
-specific, written prior permission.
-
-THIS SOFTWARE IS PROVIDED "AS IS", AND PRIME COMPUTER,
-INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
-SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN
-NO EVENT SHALL PRIME COMPUTER, INC. BE LIABLE FOR ANY
-SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
-DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
-PROFITS, WHETHER IN ACTION OF CONTRACT, NEGLIGENCE, OR
-OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
-WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-
-
-#define SPL0 0
-#define SPL1 1
-#define SPL2 2
-#define SPL3 3
-#define SPL4 4
-#define SPL5 5
-#define SPL6 6
-
-#define SPLPP 5
-#define SPLTTY 6
-#define SPLNI 6
-
-#define IPLHI 8
-#define SPL7 IPLHI
-#define SPLHI IPLHI
-
-#ifndef ASSEMBLER
-extern int (*ivect[])();
-extern int iunit[];
-extern unsigned char intpri[];
-#endif ASSEMBLER
-
diff --git a/i386/pc/irq.h b/i386/pc/irq.h
deleted file mode 100644
index 1f9da9a..0000000
--- a/i386/pc/irq.h
+++ /dev/null
@@ -1,49 +0,0 @@
-/*
- * Copyright (c) 1995 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_PC_IRQ_H_
-#define _I386_PC_IRQ_H_
-
-/* On normal PCs, there are always 16 IRQ lines. */
-#define IRQ_COUNT 16
-
-/* Start of hardware interrupt vectors in the IDT. */
-#define IDT_IRQ_BASE 0x20
-
-/* Variables storing the master and slave PIC interrupt vector base. */
-extern int irq_master_base, irq_slave_base;
-
-/* Routine called just after entering protected mode for the first time,
- to set up the IRQ interrupt vectors in the protected-mode IDT.
- It should initialize IDT entries irq_master_base through irq_master_base+7,
- and irq_slave_base through irq_slave_base+7. */
-extern void idt_irq_init(void);
-
-/* Fill an IRQ gate in a CPU's IDT.
- Always uses an interrupt gate; just set `access' to the privilege level. */
-#define fill_irq_gate(cpu, irq_num, entry, selector, access) \
- fill_idt_gate(cpu, (irq_num) < 8 \
- ? irq_master_base+(irq_num) \
- : irq_slave_base+(irq_num)-8, \
- entry, selector, ACC_INTR_GATE | (access))
-
-#endif _I386_PC_IRQ_H_
diff --git a/i386/pc/irq_list.h b/i386/pc/irq_list.h
deleted file mode 100644
index bfd216e..0000000
--- a/i386/pc/irq_list.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * Copyright (c) 1995 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
- */
-
-/* This is just a handy file listing all the IRQ's on the PC, for whatever purpose... */
-
-irq(master,0,0)
-irq(master,1,1)
-irq(master,2,2)
-irq(master,3,3)
-irq(master,4,4)
-irq(master,5,5)
-irq(master,6,6)
-irq(master,7,7)
-
-irq(slave,0,8)
-irq(slave,1,9)
-irq(slave,2,10)
-irq(slave,3,11)
-irq(slave,4,12)
-irq(slave,5,13)
-irq(slave,6,14)
-irq(slave,7,15)
-
diff --git a/i386/pc/pc_asm.sym b/i386/pc/pc_asm.sym
deleted file mode 100644
index e05677e..0000000
--- a/i386/pc/pc_asm.sym
+++ /dev/null
@@ -1,42 +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 "real.h"
-#include "real_tss.h"
-
-offset real_call_data rcd eax
-offset real_call_data rcd ebx
-offset real_call_data rcd ecx
-offset real_call_data rcd edx
-offset real_call_data rcd esi
-offset real_call_data rcd edi
-offset real_call_data rcd ebp
-offset real_call_data rcd flags
-offset real_call_data rcd ds
-offset real_call_data rcd es
-offset real_call_data rcd fs
-offset real_call_data rcd gs
-size real_call_data rcd
-
-expr REAL_TSS_SIZE
-
diff --git a/i386/pc/phys_mem.h b/i386/pc/phys_mem.h
deleted file mode 100644
index 558267c..0000000
--- a/i386/pc/phys_mem.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- * Copyright (c) 1995 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
- */
-/*
- * PC-specific flag bits and priority values
- * for the List Memory Manager (LMM)
- * relevant for kernels managing physical memory.
- */
-#ifndef _I386_PC_PHYS_MEM_H_
-#define _I386_PC_PHYS_MEM_H_
-
-#include_next "phys_mem.h"
-
-/* <1MB memory is most precious, then <16MB memory, then high memory.
- Assign priorities to each region accordingly
- so that high memory will be used first when possible,
- then 16MB memory, then 1MB memory. */
-#define LMM_PRI_1MB -2
-#define LMM_PRI_16MB -1
-#define LMM_PRI_HIGH 0
-
-/* For memory <1MB, both LMMF_1MB and LMMF_16MB will be set.
- For memory from 1MB to 16MB, only LMMF_16MB will be set.
- For all memory higher than that, neither will be set. */
-#define LMMF_1MB 0x01
-#define LMMF_16MB 0x02
-
-
-/* Call one of these routines to add a chunk of physical memory found
- to the malloc_lmm free list.
- It assigns the appropriate flags and priorities to the region,
- as defined above, breaking up the region if necessary. */
-void phys_mem_add(vm_offset_t min, vm_size_t size);
-void i16_phys_mem_add(vm_offset_t min, vm_size_t size);
-
-#endif _I386_PC_PHYS_MEM_H_
diff --git a/i386/pc/phys_mem_add.c b/i386/pc/phys_mem_add.c
deleted file mode 100644
index 79fd3ce..0000000
--- a/i386/pc/phys_mem_add.c
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright (c) 1995 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/vm_types.h>
-#include <mach/lmm.h>
-#include <malloc.h>
-
-#include "vm_param.h"
-#include "phys_mem.h"
-
-/* Note that this routine takes _physical_ addresses, not virtual. */
-void phys_mem_add(vm_offset_t min, vm_size_t size)
-{
- vm_offset_t max = min + size;
-
- /* Add the memory region with the proper flags and priority. */
- if (max <= 1*1024*1024)
- {
- lmm_add(&malloc_lmm, phystokv(min), size,
- LMMF_1MB | LMMF_16MB, LMM_PRI_1MB);
- }
- else
- {
- if (min < 16*1024*1024)
- {
- vm_offset_t nmax = max;
- if (nmax > 16*1024*1024) nmax = 16*1024*1024;
- lmm_add(&malloc_lmm, phystokv(min), nmax - min,
- LMMF_16MB, LMM_PRI_16MB);
- }
- if (max > 16*1024*1024)
- {
- vm_offset_t nmin = min;
- if (nmin < 16*1024*1024) nmin = 16*1024*1024;
- lmm_add(&malloc_lmm, phystokv(nmin), max - nmin, 0, 0);
- }
- }
-
- if (max > phys_mem_max)
- phys_mem_max = max;
-}
-
diff --git a/i386/pc/pic.c b/i386/pc/pic.c
deleted file mode 100644
index eaf7b56..0000000
--- a/i386/pc/pic.c
+++ /dev/null
@@ -1,283 +0,0 @@
-/*
- * Mach Operating System
- * Copyright (c) 1991,1990,1989 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
- */
-/*
-Copyright (c) 1988,1989 Prime Computer, Inc. Natick, MA 01760
-All Rights Reserved.
-
-Permission to use, copy, modify, and distribute this
-software and its documentation for any purpose and
-without fee is hereby granted, provided that the above
-copyright notice appears in all copies and that both the
-copyright notice and this permission notice appear in
-supporting documentation, and that the name of Prime
-Computer, Inc. not be used in advertising or publicity
-pertaining to distribution of the software without
-specific, written prior permission.
-
-THIS SOFTWARE IS PROVIDED "AS IS", AND PRIME COMPUTER,
-INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
-SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN
-NO EVENT SHALL PRIME COMPUTER, INC. BE LIABLE FOR ANY
-SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
-DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
-PROFITS, WHETHER IN ACTION OF CONTRACT, NEGLIGENCE, OR
-OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
-WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-
-#include <mach/machine/pio.h>
-
-#include <sys/types.h>
-
-#include "ipl.h"
-#include "pic.h"
-
-
-u_short pic_mask[SPLHI+1];
-
-int curr_ipl;
-u_short curr_pic_mask;
-
-u_short orig_pic_mask;
-int orig_pic_mask_initialized;
-
-u_char intpri[NINTR];
-
-/*
-** picinit() - This routine
-** * Establishes a table of interrupt vectors
-** * Establishes a table of interrupt priority levels
-** * Establishes a table of interrupt masks to be put
-** in the PICs.
-** * Establishes location of PICs in the system
-** * Initialises them
-**
-** At this stage the interrupt functionality of this system should be
-** coplete.
-**
-*/
-
-
-/*
-** 1. First we form a table of PIC masks - rather then calling form_pic_mask()
-** each time there is a change of interrupt level - we will form a table
-** of pic masks, as there are only 7 interrupt priority levels.
-**
-** 2. The next thing we must do is to determine which of the PIC interrupt
-** request lines have to be masked out, this is done by calling
-** form_pic_mask() with a (int_lev) of zero, this will find all the
-** interrupt lines that have priority 0, (ie to be ignored).
-** Then we split this up for the master/slave PICs.
-**
-** 2. Initialise the PICs , master first, then the slave.
-** All the register field definitions are described in pic_jh.h, also
-** the settings of these fields for the various registers are selected.
-**
-*/
-
-pic_init(int master_base, int slave_base)
-{
- u_short PICM_OCW1, PICS_OCW1 ;
- u_short PICM_OCW2, PICS_OCW2 ;
- u_short PICM_OCW3, PICS_OCW3 ;
- u_short i;
-
- if (!orig_pic_mask_initialized)
- {
- unsigned omaster, oslave;
-
- omaster = inb(MASTER_OCW);
- PIC_DELAY();
- oslave = inb(SLAVES_OCW);
- PIC_DELAY();
-
- orig_pic_mask = omaster | (oslave << 8);
- orig_pic_mask_initialized = 1;
- }
-
-
- /*
- ** 1. Form pic mask table
- */
-
- form_pic_mask();
-
- /*
- ** 1a. Select current SPL.
- */
-
- curr_ipl = SPLHI;
- curr_pic_mask = pic_mask[SPLHI];
-
- /*
- ** 3. Select options for each ICW and each OCW for each PIC.
- */
-
-#if 0
- PICM_ICW1 = (ICW_TEMPLATE | EDGE_TRIGGER | ADDR_INTRVL8
- | CASCADE_MODE | ICW4__NEEDED);
-
- PICS_ICW1 = (ICW_TEMPLATE | EDGE_TRIGGER | ADDR_INTRVL8
- | CASCADE_MODE | ICW4__NEEDED);
-
- PICM_ICW2 = master_base;
- PICS_ICW2 = slave_base;
-
- PICM_ICW3 = ( SLAVE_ON_IR2 );
- PICS_ICW3 = ( I_AM_SLAVE_2 );
-
- PICM_ICW4 = (SNF_MODE_DIS | NONBUFD_MODE | NRML_EOI_MOD
- | I8086_EMM_MOD);
- PICS_ICW4 = (SNF_MODE_DIS | NONBUFD_MODE | NRML_EOI_MOD
- | I8086_EMM_MOD);
-#endif
-
- PICM_OCW1 = (curr_pic_mask & 0x00FF);
- PICS_OCW1 = ((curr_pic_mask & 0xFF00)>>8);
-
- PICM_OCW2 = NON_SPEC_EOI;
- PICS_OCW2 = NON_SPEC_EOI;
-
- PICM_OCW3 = (OCW_TEMPLATE | READ_NEXT_RD | READ_IR_ONRD );
- PICS_OCW3 = (OCW_TEMPLATE | READ_NEXT_RD | READ_IR_ONRD );
-
-
- /*
- ** 4. Initialise master - send commands to master PIC
- */
-
- outb ( MASTER_ICW, PICM_ICW1 );
- PIC_DELAY();
- outb ( MASTER_OCW, master_base );
- PIC_DELAY();
- outb ( MASTER_OCW, PICM_ICW3 );
- PIC_DELAY();
- outb ( MASTER_OCW, PICM_ICW4 );
- PIC_DELAY();
-
-#if 0
- outb ( MASTER_OCW, PICM_MASK );
- PIC_DELAY();
- outb ( MASTER_ICW, PICM_OCW3 );
- PIC_DELAY();
-#endif
-
- /*
- ** 5. Initialise slave - send commands to slave PIC
- */
-
- outb ( SLAVES_ICW, PICS_ICW1 );
- PIC_DELAY();
- outb ( SLAVES_OCW, slave_base );
- PIC_DELAY();
- outb ( SLAVES_OCW, PICS_ICW3 );
- PIC_DELAY();
- outb ( SLAVES_OCW, PICS_ICW4 );
- PIC_DELAY();
-
-#if 0
- outb ( SLAVES_OCW, PICS_OCW1 );
- PIC_DELAY();
- outb ( SLAVES_ICW, PICS_OCW3 );
- PIC_DELAY();
-
- /*
- ** 6. Initialise interrupts
- */
- outb ( MASTER_OCW, PICM_OCW1 );
- PIC_DELAY();
-#endif
-
- outb(MASTER_OCW, orig_pic_mask);
- PIC_DELAY();
- outb(SLAVES_OCW, orig_pic_mask >> 8);
- PIC_DELAY();
-
-#if 0
- /* XXX */
- if (master_base != 8)
- {
- outb(0x21, 0xff);
- PIC_DELAY();
- outb(0xa1, 0xff);
- PIC_DELAY();
- }
-#endif
-
- outb(MASTER_ICW, NON_SPEC_EOI);
- PIC_DELAY();
- outb(SLAVES_ICW, NON_SPEC_EOI);
- PIC_DELAY();
-
- inb(0x60);
-
-}
-
-/*
-** form_pic_mask(int_lvl)
-**
-** For a given interrupt priority level (int_lvl), this routine goes out
-** and scans through the interrupt level table, and forms a mask based on the
-** entries it finds there that have the same or lower interrupt priority level
-** as (int_lvl). It returns a 16-bit mask which will have to be split up between
-** the 2 pics.
-**
-*/
-
-#define SLAVEMASK (0xFFFF ^ SLAVE_ON_IR2)
-#define SLAVEACTV 0xFF00
-
-form_pic_mask()
-{
- unsigned short i, j, bit, mask;
-
- for (i=SPL0; i <= SPLHI; i++) {
- for (j=0x00, bit=0x01, mask = 0; j < NINTR; j++, bit<<=1)
- if (intpri[j] <= i)
- mask |= bit;
-
- if ((mask & SLAVEACTV) != SLAVEACTV )
- mask &= SLAVEMASK;
-
- pic_mask[i] = mask;
- }
-}
-
-#if 0
-
-intnull(unit_dev)
-{
- printf("intnull(%d)\n", unit_dev);
-}
-
-int prtnull_count = 0;
-prtnull(unit)
-{
- ++prtnull_count;
-}
-
-#endif 0
diff --git a/i386/pc/pic.h b/i386/pc/pic.h
deleted file mode 100644
index 51911cc..0000000
--- a/i386/pc/pic.h
+++ /dev/null
@@ -1,204 +0,0 @@
-/*
- * Mach Operating System
- * Copyright (c) 1991,1990,1989 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
- */
-/*
-Copyright (c) 1988,1989 Prime Computer, Inc. Natick, MA 01760
-All Rights Reserved.
-
-Permission to use, copy, modify, and distribute this
-software and its documentation for any purpose and
-without fee is hereby granted, provided that the above
-copyright notice appears in all copies and that both the
-copyright notice and this permission notice appear in
-supporting documentation, and that the name of Prime
-Computer, Inc. not be used in advertising or publicity
-pertaining to distribution of the software without
-specific, written prior permission.
-
-THIS SOFTWARE IS PROVIDED "AS IS", AND PRIME COMPUTER,
-INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
-SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN
-NO EVENT SHALL PRIME COMPUTER, INC. BE LIABLE FOR ANY
-SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
-DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
-PROFITS, WHETHER IN ACTION OF CONTRACT, NEGLIGENCE, OR
-OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
-WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-*/
-
-#ifndef _I386_PIC_H_
-#define _I386_PIC_H_
-
-#include "irq.h"
-
-#define NINTR 0x10
-#define NPICS 0x02
-
-/*
-** The following are definitions used to locate the PICs in the system
-*/
-
-#define ADDR_PIC_BASE 0x20
-#define OFF_ICW 0x00
-#define OFF_OCW 0x01
-#define SIZE_PIC 0x80
-
-#define MASTER_ICW (ADDR_PIC_BASE + OFF_ICW)
-#define MASTER_OCW (ADDR_PIC_BASE + OFF_OCW)
-#define SLAVES_ICW (ADDR_PIC_BASE + OFF_ICW + SIZE_PIC)
-#define SLAVES_OCW (ADDR_PIC_BASE + OFF_OCW + SIZE_PIC)
-
-/*
-** The following banks of definitions ICW1, ICW2, ICW3, and ICW4 are used
-** to define the fields of the various ICWs for initialisation of the PICs
-*/
-
-/*
-** ICW1
-*/
-
-#define ICW_TEMPLATE 0x10
-
-#define LEVL_TRIGGER 0x08
-#define EDGE_TRIGGER 0x00
-#define ADDR_INTRVL4 0x04
-#define ADDR_INTRVL8 0x00
-#define SINGLE__MODE 0x02
-#define CASCADE_MODE 0x00
-#define ICW4__NEEDED 0x01
-#define NO_ICW4_NEED 0x00
-
-/*
-** ICW2
-*/
-
-#define PICM_VECTBASE IDT_IRQ_BASE
-#define PICS_VECTBASE (PICM_VECTBASE + 0x08)
-
-/*
-** ICW3
-*/
-
-#define SLAVE_ON_IR0 0x01
-#define SLAVE_ON_IR1 0x02
-#define SLAVE_ON_IR2 0x04
-#define SLAVE_ON_IR3 0x08
-#define SLAVE_ON_IR4 0x10
-#define SLAVE_ON_IR5 0x20
-#define SLAVE_ON_IR6 0x40
-#define SLAVE_ON_IR7 0x80
-
-#define I_AM_SLAVE_0 0x00
-#define I_AM_SLAVE_1 0x01
-#define I_AM_SLAVE_2 0x02
-#define I_AM_SLAVE_3 0x03
-#define I_AM_SLAVE_4 0x04
-#define I_AM_SLAVE_5 0x05
-#define I_AM_SLAVE_6 0x06
-#define I_AM_SLAVE_7 0x07
-
-/*
-** ICW4
-*/
-
-#define SNF_MODE_ENA 0x10
-#define SNF_MODE_DIS 0x00
-#define BUFFERD_MODE 0x08
-#define NONBUFD_MODE 0x00
-#define AUTO_EOI_MOD 0x02
-#define NRML_EOI_MOD 0x00
-#define I8086_EMM_MOD 0x01
-#define SET_MCS_MODE 0x00
-
-/*
-** OCW1
-*/
-
-#define PICM_MASK 0xFF
-#define PICS_MASK 0xFF
-
-/*
-** OCW2
-*/
-
-#define NON_SPEC_EOI 0x20
-#define SPECIFIC_EOI 0x30
-#define ROT_NON_SPEC 0x50
-#define SET_ROT_AEOI 0x40
-#define RSET_ROTAEOI 0x00
-#define ROT_SPEC_EOI 0x70
-#define SET_PRIORITY 0x60
-#define NO_OPERATION 0x20
-
-#define SEND_EOI_IR0 0x00
-#define SEND_EOI_IR1 0x01
-#define SEND_EOI_IR2 0x02
-#define SEND_EOI_IR3 0x03
-#define SEND_EOI_IR4 0x04
-#define SEND_EOI_IR5 0x05
-#define SEND_EOI_IR6 0x06
-#define SEND_EOI_IR7 0x07
-
-/*
-** OCW3
-*/
-
-#define OCW_TEMPLATE 0x08
-#define SPECIAL_MASK 0x40
-#define MASK_MDE_SET 0x20
-#define MASK_MDE_RST 0x00
-#define POLL_COMMAND 0x04
-#define NO_POLL_CMND 0x00
-#define READ_NEXT_RD 0x02
-#define READ_IR_ONRD 0x00
-#define READ_IS_ONRD 0x01
-
-
-/*
-** Standard PIC initialization values for PCs.
-*/
-#define PICM_ICW1 (ICW_TEMPLATE | EDGE_TRIGGER | ADDR_INTRVL8 \
- | CASCADE_MODE | ICW4__NEEDED)
-#define PICM_ICW3 (SLAVE_ON_IR2)
-#define PICM_ICW4 (SNF_MODE_DIS | NONBUFD_MODE | NRML_EOI_MOD \
- | I8086_EMM_MOD)
-
-#define PICS_ICW1 (ICW_TEMPLATE | EDGE_TRIGGER | ADDR_INTRVL8 \
- | CASCADE_MODE | ICW4__NEEDED)
-#define PICS_ICW3 (I_AM_SLAVE_2)
-#define PICS_ICW4 (SNF_MODE_DIS | NONBUFD_MODE | NRML_EOI_MOD \
- | I8086_EMM_MOD)
-
-/* Some systems need a little bit of delay
- while fiddling with PIC registers. */
-#ifndef ASSEMBLER
-#define PIC_DELAY() asm volatile("jmp 1f; 1: jmp 1f; 1:")
-#else
-#define PIC_DELAY jmp 9f; 9: jmp 9f; 9:
-#endif
-
-
-#endif _I386_PIC_H_
diff --git a/i386/pc/putchar.c b/i386/pc/putchar.c
deleted file mode 100644
index d5b106c..0000000
--- a/i386/pc/putchar.c
+++ /dev/null
@@ -1,96 +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/eflags.h>
-
-#include "real.h"
-
-#ifndef ENABLE_IMMCONSOLE
-
-#include <rc.h>
-int putchar(int c)
-{
-
- if (c == '\n')
- putchar('\r');
-
- {
-#if RCLINE >= 0
- static int serial_inited = 0;
- if (! serial_inited) {
- init_serial();
- serial_inited = 1;
- }
- serial_putc(c);
-#else
- struct real_call_data rcd;
- rcd.eax = 0x0e00 | (c & 0xff);
- rcd.ebx = 0x07;
- rcd.flags = 0;
- real_int(0x10, &rcd);
-#endif
- }
-
- return 0;
-}
-
-#else ENABLE_IMMCONSOLE
-
-void
-putchar(unsigned char c)
-{
- static int ofs = -1;
-
- if (ofs < 0)
- {
- ofs = 0;
- putchar('\n');
- }
- if (c == '\r')
- {
- ofs = 0;
- }
- else if (c == '\n')
- {
- bcopy(0xb8000+80*2, 0xb8000, 80*2*24);
- bzero(0xb8000+80*2*24, 80*2);
- ofs = 0;
- }
- else
- {
- volatile unsigned char *p;
-
- if (ofs >= 80)
- {
- putchar('\r');
- putchar('\n');
- }
-
- p = (void*)0xb8000 + 80*2*24 + ofs*2;
- p[0] = c;
- p[1] = 0x0f;
- ofs++;
- }
-}
-
-#endif ENABLE_IMMCONSOLE
diff --git a/i386/pc/real.h b/i386/pc/real.h
deleted file mode 100644
index 4206231..0000000
--- a/i386/pc/real.h
+++ /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
- */
-#ifndef _I386_PC_REAL_CALL_H_
-#define _I386_PC_REAL_CALL_H_
-
-/* This structure happens to correspond to the DPMI real-call structure. */
-struct real_call_data
-{
- unsigned edi;
- unsigned esi;
- unsigned ebp;
- unsigned reserved;
- unsigned ebx;
- unsigned edx;
- unsigned ecx;
- unsigned eax;
- unsigned short flags;
- unsigned short es;
- unsigned short ds;
- unsigned short fs;
- unsigned short gs;
- unsigned short ip;
- unsigned short cs;
- unsigned short sp;
- unsigned short ss;
-};
-
-/* Code segment we originally had when we started in real mode. */
-extern unsigned short real_cs;
-
-extern void (*real_int)(int intnum, struct real_call_data *rcd);
-extern void (*real_exit)(int rc);
-
-#define real_call_data_init(rcd) \
- ({ (rcd)->flags = 0; \
- (rcd)->ss = 0; \
- (rcd)->sp = 0; \
- })
-
-#endif /* _I386_PC_REAL_CALL_H_ */
diff --git a/i386/pc/real_tss.c b/i386/pc/real_tss.c
deleted file mode 100644
index 745a611..0000000
--- a/i386/pc/real_tss.c
+++ /dev/null
@@ -1,59 +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/tss.h>
-#include <mach/machine/proc_reg.h>
-
-#include "cpu.h"
-#include "real_tss.h"
-#include "vm_param.h"
-#include "config.h"
-
-#ifdef ENABLE_REAL_TSS
-
-static void real_tss_init()
-{
- /* Only initialize once. */
- if (!real_tss.ss0)
- {
- /* Initialize the real-mode TSS. */
- real_tss.ss0 = KERNEL_DS;
- real_tss.esp0 = get_esp();
- real_tss.io_bit_map_offset = sizeof(real_tss);
-
- /* Set the last byte in the I/O bitmap to all 1's. */
- ((unsigned char*)&real_tss)[REAL_TSS_SIZE] = 0xff;
- }
-}
-
-void
-cpu_gdt_init_REAL_TSS(struct cpu *cpu)
-{
- real_tss_init();
-
- fill_gdt_descriptor(cpu, REAL_TSS,
- kvtolin(&real_tss), REAL_TSS_SIZE-1,
- ACC_PL_K|ACC_TSS, 0);
-}
-
-#endif ENABLE_REAL_TSS
diff --git a/i386/pc/real_tss.h b/i386/pc/real_tss.h
deleted file mode 100644
index 2f89547..0000000
--- a/i386/pc/real_tss.h
+++ /dev/null
@@ -1,34 +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_PC_REAL_TSS_
-#define _I386_PC_REAL_TSS_
-
-#include <mach/machine/tss.h>
-
-extern struct i386_tss real_tss;
-
-/* This size doesn't include the extra required 0xff byte
- just past the end of the real IOPB. */
-#define REAL_TSS_SIZE (sizeof(real_tss)+65536/8)
-
-#endif _I386_PC_REAL_TSS_
diff --git a/i386/pc/real_tss_def.S b/i386/pc/real_tss_def.S
deleted file mode 100644
index 1871250..0000000
--- a/i386/pc/real_tss_def.S
+++ /dev/null
@@ -1,35 +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 "pc_asm.h"
-
-#ifdef ENABLE_REAL_TSS
-
- .data
- .globl EXT(real_tss)
- .comm EXT(real_tss),REAL_TSS_SIZE+1
-
-#endif ENABLE_REAL_TSS
diff --git a/i386/pc/rv86/config.h b/i386/pc/rv86/config.h
deleted file mode 100644
index 5f971ce..0000000
--- a/i386/pc/rv86/config.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Copyright (c) 1995 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_next "config.h"
-
-#ifndef ENABLE_REAL_TSS
-#define ENABLE_REAL_TSS
-#endif
-
diff --git a/i386/pc/rv86/gdt_sels.h b/i386/pc/rv86/gdt_sels.h
deleted file mode 100644
index 89a13c7..0000000
--- a/i386/pc/rv86/gdt_sels.h
+++ /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_next "gdt_sels.h"
-
-/* This is a special TSS with a full IO bitmap
- that allows access to all I/O ports in v86 mode.
- It's used for making calls to the real-mode BIOS (or DOS). */
-gdt_sel(RV86_TSS)
-
-/*
- * 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_next "gdt_sels.h"
-
-/* This is a special TSS with a full IO bitmap
- that allows access to all I/O ports in v86 mode.
- It's used for making calls to the real-mode BIOS (or DOS). */
-gdt_sel(RV86_TSS)
-
diff --git a/i386/pc/rv86/idt_irq_init.c b/i386/pc/rv86/idt_irq_init.c
deleted file mode 100644
index f46882a..0000000
--- a/i386/pc/rv86/idt_irq_init.c
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright (c) 1995 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 "cpu.h"
-#include "idt.h"
-
-void idt_irq_init()
-{
- int i;
-
-#define irq(pic,picnum,irqnum) \
- { extern void rv86_reflect_irq##irqnum(); \
- fill_idt_gate(&cpu[0], irq_##pic##_base + picnum, \
- (vm_offset_t)rv86_reflect_irq##irqnum, KERNEL_CS, \
- ACC_PL_K|ACC_INTR_GATE); \
- }
-#include "irq_list.h"
-#undef irq
-}
-
diff --git a/i386/pc/rv86/rv86_real_int.c b/i386/pc/rv86/rv86_real_int.c
deleted file mode 100644
index d9c35b6..0000000
--- a/i386/pc/rv86/rv86_real_int.c
+++ /dev/null
@@ -1,276 +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/seg.h>
-#include <mach/machine/proc_reg.h>
-#include <mach/machine/far_ptr.h>
-#include <mach/machine/eflags.h>
-
-#include "vm_param.h"
-#include "real.h"
-#include "real_tss.h"
-#include "cpu.h"
-#include "debug.h"
-
-
-/*
-
- There seem to be three main ways to handle v86 mode:
-
- * The v86 environment is just an extension of the normal kernel environment:
- you can switch to and from v86 mode just as you can change any other processor state.
- You always keep running on the separate "logical" stack,
- which is the kernel stack when running in protected mode,
- or the user stack when running in v86 mode.
- When in v86 mode, the "actual" kernel stack is just a stub
- big enough to switch back to the "normal" kernel stack,
- which was being used as the user stack while running in v86 mode.
- Thus, v86 and protected-mode "segments" of stack data
- can be interleaved together on the same logical stack.
-
- - To make a real int call from kernel pmode,
- switch to v86 mode and execute an int instruction,
- then switch back to protected mode.
-
- - To reflect an interrupt to v86 mode:
-
- > If the processor was running in v86 mode,
- just adjust the kernel and user stacks
- to emulate a real-mode interrupt, and return.
-
- > If the processor was running in pmode,
- switch to v86 mode and re-trigger the interrupt
- with a software int instruction.
-
- - To handle an interrupt in pmode:
-
- > If the processor was running in v86 mode,
- switch from the stub stack to the user stack that was in use
- (could be different from the stack we set originally,
- because BIOS/DOS code might have switched stacks!),
- call the interrupt handler, switch back, and return.
-
- > If the processor was running in pmode,
- just call the interrupt handler and return.
-
- This method only works if the whole "kernel" is <64KB
- and generally compatible with real-mode execution.
- This is the model my DOS extender currently uses.
-
- One major disadvantage of this method
- is that interrupt handlers can't run "general" protected-mode code,
- such as typical code compiled by GCC.
- This is because, if an interrupt occurs while in v86 mode,
- the v86-mode ss:sp may point basically anywhere in the low 1MB,
- and it therefore it can't be used directly as a pmode stack;
- and the only other stack available is the miniscule stub stack.
- Since "general" protected-mode code expects a full-size stack
- with an SS equal to the normal protected-mode DS,
- neither of these available stacks will suffice.
- It is impossible to switch back to the original kernel stack
- because arbitrary DOS or BIOS code might have switched from it
- to a different stack somewhere else in the low 1MB,
- and we have no way of telling where the SP was when that happened.
- The upshot is that interrupt handlers must be extremely simple;
- in MOSS, all they do is post a signal to "the process,"
- and return immediately without actually handling the interrupt.
-
- * The v86 environment is a separate "task" with its own user and kernel stacks;
- you switch back and forth as if between multiple ordinary tasks,
- the tasks can preempt each other, go idle waiting for events, etc.
-
- - To make a real int call from kernel pmode,
- the task making the call essentially does a synchronous IPC to the v86 task.
- If the v86 task is busy with another request or a reflected interrupt,
- the calling task will go idle until the v86 task is available.
-
- - Reflecting an interrupt to v86 mode
- basically amounts to sending a Unix-like "signal" to the v86 task:
-
- > If the processor was running in the v86 task,
- just adjust the kernel and user stacks
- to emulate a real-mode interrupt, and return.
-
- > If the processor was running in a protected-mode task
- (or another v86-mode task),
- post a signal to the v86 task, wake it up if it's asleep,
- and invoke the scheduler to switch to the v86 task
- if it has a higher priority than the currently running task.
-
- - To handle an interrupt in pmode,
- just call the interrupt handler and return.
- It doesn't matter whether the interrupt was from v86 or pmode,
- because the kernel stacks look the same in either case.
-
- One big problem with this method is that if interrupts are to be handled in v86 mode,
- all the typical problems of handling interrupts in user-mode tasks pop up.
- In particular, an interrupt can now cause preemption,
- so this will break an interruptible but nonpreemptible environment.
- (The problem is not that the interrupted task is "preempted"
- to switch temporarily to the v86 task to handle the interrupt;
- the problem is that when the v86 task is done handling the interrupt,
- the scheduler will be invoked and some task other than the interrupted task may be run.)
-
- Of course, this is undoubtedly the right solution
- if that's the interrupt model the OS is using anyway
- (i.e. if the OS already supports user-level protected-mode interrupts).
-
- * A bastardization of the two above approaches:
- treat the v86 environment as a separate "task",
- but a special one that doesn't behave at all like other tasks.
- The v86 "task" in this case is more of an "interrupt co-stack"
- that grows and shrinks alongside the normal interrupt stack
- (or the current kernel stack, if interrupts are handled on the kernel stack).
- Interrupts and real calls can cause switches between these two interrupt stacks,
- but they can't cause preemption in the normal sense.
- The route taken while building the stacks is exactly the opposite
- the route taken while tearing it down.
-
- Now two "kernel stack pointers" have to be maintained all the time instead of one.
- When running in protected mode:
-
- - The ESP register contains the pmode stack pointer.
- - Some global variable contains the v86 stack pointer.
-
- When running in v86 mode:
-
- - The ESP register contains the v86 stack pointer.
- (Note that BIOS/DOS code can switch stacks,
- so at any given time it may point practically anywhere!)
- - The current tss's esp0 contains the pmode stack pointer.
-
- Whenever a switch is made, a stack frame is placed on the new co-stack
- indicating that the switch was performed.
-
- - To make a real int call from kernel pmode,
- build a real-mode interrupt stack frame on the v86 interrupt stack,
- build a v86-mode trap stack frame on the pmode stack,
- set the tss's esp0 to point to the end of that stack frame,
- and iret from it.
- Then when the magic "done-with-real-call" int instruction is hit,
- the pmode interrupt handler will see it
- and know to simply destroy the v86 trap stack on the pmode stack.
-
- - Handling an interrupt can always be thought of as going "through" pmode:
- switching from the v86 stack to the pmode stack
- if the processor was in v86 mode when the interrupt was taken,
- and switching from the pmode stack back to the v86 stack as described above
- if the interrupt is to be reflected to v86 mode.
-
- Of course, optimized paths are possible:
-
- - To reflect an interrupt to v86 mode:
-
- > If the processor was running in v86 mode,
- just adjust the kernel and user stack frames and return.
-
- > If the processor was running in pmode,
- do as described above for explicit real int calls.
-
- - To handle an interrupt in pmode:
-
- > If the processor was running in v86 mode,
- switch to the pmode stack,
- stash the old v86 stack pointer variable on the pmode stack,
- and set the v86 stack pointer variable to the new location.
- Call the interrupt handler,
- then tear down everything and return to v86 mode.
-
- Observation:
- In the first and third models,
- explicit real int calls are entirely symmetrical
- to hardware interrupts from pmode to v86 mode.
- This is valid because of the interruptible but nonpreemptible model:
- no scheduling is involved, and the stack(s) will always be torn down
- in exactly the opposite order in which they were built up.
- In the second model,
- explicit real calls are quite different,
- because the BIOS is interruptible but nonpreemptible:
- you can reflect an interrupt into the v86 task at any time,
- but you can only make an explicit request to that task when it's ready
- (i.e. no other requests or interrupts are outstanding).
-
-*/
-
-
-
-#define RV86_USTACK_SIZE 1024
-
-vm_offset_t rv86_ustack_pa;
-vm_offset_t rv86_return_int_pa;
-struct far_pointer_32 rv86_usp;
-struct far_pointer_16 rv86_rp;
-
-void rv86_real_int(int intnum, struct real_call_data *rcd)
-{
- unsigned short old_tr;
- unsigned int old_eflags;
-
- /* If this is the first time this routine is being called,
- initialize the kernel stack. */
- if (!rv86_ustack_pa)
- {
- rv86_ustack_pa = 0xa0000 - RV86_USTACK_SIZE; /* XXX */
-
- assert(rv86_ustack_pa < 0x100000);
-
- /* Use the top two bytes of the ustack for an 'int $0xff' instruction. */
- rv86_return_int_pa = rv86_ustack_pa + RV86_USTACK_SIZE - 2;
- *(short*)phystokv(rv86_return_int_pa) = 0xffcd;
-
- /* Set up the v86 stack pointer. */
- rv86_usp.seg = rv86_rp.seg = rv86_ustack_pa >> 4;
- rv86_usp.ofs = rv86_rp.ofs = (rv86_ustack_pa & 0xf) + RV86_USTACK_SIZE - 2;
-
- /* Pre-allocate a real-mode interrupt stack frame. */
- rv86_usp.ofs -= 6;
- }
-
- /* Make sure interrupts are disabled. */
- old_eflags = get_eflags();
-
- /* Switch to the TSS to use in v86 mode. */
- old_tr = get_tr();
- cpu[0].tables.gdt[REAL_TSS_IDX].access &= ~ACC_TSS_BUSY;
- set_tr(REAL_TSS);
-
- asm volatile("
- pushl %%ebp
- pushl %%eax
- call rv86_real_int_asm
- popl %%eax
- popl %%ebp
- " :
- : "a" (rcd), "S" (intnum)
- : "eax", "ebx", "ecx", "edx", "esi", "edi");
-
- /* Switch to the original TSS. */
- cpu[0].tables.gdt[old_tr/8].access &= ~ACC_TSS_BUSY;
- set_tr(old_tr);
-
- /* Restore the original processor flags. */
- set_eflags(old_eflags);
-}
-
-void (*real_int)(int intnum, struct real_call_data *rcd) = rv86_real_int;
-
diff --git a/i386/pc/rv86/rv86_real_int_asm.S b/i386/pc/rv86/rv86_real_int_asm.S
deleted file mode 100644
index 54b1b9b..0000000
--- a/i386/pc/rv86/rv86_real_int_asm.S
+++ /dev/null
@@ -1,119 +0,0 @@
-/*
- * Copyright (c) 1995 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 <mach/machine/eflags.h>
-
-#include "trap.h"
-#include "i386_asm.h"
-#include "pc_asm.h"
-#include "trap_asm.h"
-
- .text
- .globl rv86_real_int_asm
-rv86_real_int_asm:
-
- /* Stash our protected-mode stack pointer. */
- movl %esp,EXT(real_tss)+TSS_ESP0
-
- /* Load the linear/physical-address data segment into ES,
- for easy access to real-mode memory. */
- movl $LINEAR_DS,%edx
- movw %dx,%es
-
- /* Find the physical address of the real-mode interrupt stack (es:ebx).
- A 6-byte stack frame has already been allocated on it. */
- movl EXT(rv86_usp)+4,%ebx
- shll $4,%ebx
- addl EXT(rv86_usp),%ebx
-
- /* Store the magic return pointer into the real-mode interrupt stack frame. */
- movl EXT(rv86_rp),%edx
- movl %edx,%es:(%ebx)
- movw RCD_FLAGS(%eax),%dx
- movw %dx,%es:4(%ebx)
-
- /* Find the address of the real mode interrupt vector (es:esi). */
- shll $2,%esi
-
- /* Build the v86 trap frame. */
- xorl %edx,%edx
- movw RCD_GS(%eax),%dx
- pushl %edx
- movw RCD_FS(%eax),%dx
- pushl %edx
- movw RCD_DS(%eax),%dx
- pushl %edx
- movw RCD_ES(%eax),%dx
- pushl %edx
- pushl EXT(rv86_usp)+4
- pushl EXT(rv86_usp)
- movl $EFL_VM+EFL_IOPL_USER,%ecx
- orw RCD_FLAGS(%eax),%cx
- andl $-1-EFL_IF-EFL_TF,%ecx
- pushl %ecx
- movw %es:2(%esi),%edx
- pushl %edx
- movw %es:(%esi),%edx
- pushl %edx
-
- /* Load the requested register state. */
- movl RCD_EDI(%eax),%edi
- movl RCD_ESI(%eax),%esi
- movl RCD_EBP(%eax),%ebp
- movl RCD_EBX(%eax),%ebx
- movl RCD_EDX(%eax),%edx
- movl RCD_ECX(%eax),%ecx
- movl RCD_EAX(%eax),%eax
-
- /* Drop into v86 mode. */
- iret
-
-ENTRY(rv86_return)
-
- /* Restore the kernel segment registers. */
- movw %ss,%ax
- movw %ax,%ds
- movw %ax,%es
-
- /* Retrieve the real_call_data pointer from rv86_real_int_asm's stack frame. */
- movl TR_V86SIZE+4(%esp),%eax
-
- /* Stash the final register state. */
- movl TR_EDI(%esp),%edx; movl %edx,RCD_EDI(%eax)
- movl TR_ESI(%esp),%edx; movl %edx,RCD_ESI(%eax)
- movl TR_EBP(%esp),%edx; movl %edx,RCD_EBP(%eax)
- movl TR_EBX(%esp),%edx; movl %edx,RCD_EBX(%eax)
- movl TR_EDX(%esp),%edx; movl %edx,RCD_EDX(%eax)
- movl TR_ECX(%esp),%edx; movl %edx,RCD_ECX(%eax)
- movl TR_EAX(%esp),%edx; movl %edx,RCD_EAX(%eax)
- movl TR_EFLAGS(%esp),%edx; movw %dx,RCD_FLAGS(%eax)
- movl TR_V86_ES(%esp),%edx; movw %dx,RCD_ES(%eax)
- movl TR_V86_DS(%esp),%edx; movw %dx,RCD_DS(%eax)
- movl TR_V86_FS(%esp),%edx; movw %dx,RCD_FS(%eax)
- movl TR_V86_GS(%esp),%edx; movw %dx,RCD_GS(%eax)
-
- /* Return from the call to rv86_real_int_asm. */
- lea TR_V86SIZE(%esp),%esp
- ret
-
diff --git a/i386/pc/rv86/rv86_reflect_irq.S b/i386/pc/rv86/rv86_reflect_irq.S
deleted file mode 100644
index 5d68fae..0000000
--- a/i386/pc/rv86/rv86_reflect_irq.S
+++ /dev/null
@@ -1,113 +0,0 @@
-/*
- * Copyright (c) 1995 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 <mach/machine/eflags.h>
-
-#include "trap.h"
-#include "trap_asm.h"
-#include "pc_asm.h"
-#include "i386_asm.h"
-
-/*
- * Define a set of interrupt handlers to reflect interrupts to v86 mode.
- */
-
- .text
-
-#define master_base 0x08
-#define slave_base 0x70
-
-#define irq(pic,picnum,irqnum) \
-ENTRY(rv86_reflect_irq##irqnum) ;\
- pushl $pic##_base+picnum ;\
- pushl $0x80000000+irqnum /* (for debug) */ ;\
- jmp allintrs
-
-#include "irq_list.h"
-
-
-allintrs:
- pusha
- pushl %ds
- pushl %es
- pushl %fs
- pushl %gs
-
- /* Load the normal kernel segment registers. */
- movw %ss,%ax
- movw %ax,%ds
- movw %ax,%es
-
- /* See if we came from v86 mode. */
- testl $EFL_VM,TR_EFLAGS(%esp)
- jnz int_from_v86
-
- movl TR_ERR(%esp),%eax
- pushl $dummy_rcd
- pushl %eax
- call EXT(rv86_real_int)
- addl $2*4,%esp
-
- popl %gs
- popl %fs
- popl %es
- popl %ds
- popa
- addl $2*4,%esp
- iret
-
-int_from_v86:
-
- /* Save the v86 stack pointer before handling the interrupt.
- We need this in order to handle recursive reflected interrupts
- possibly interspersed with protected-mode interrupts. */
- movl EXT(rv86_usp),%esi
- movl EXT(rv86_usp)+4,%edi
- movl EXT(real_tss)+TSS_ESP0,%ebx
-
- movl TR_ESP(%esp),%eax
- subw $6,%ax /* allocate a real-mode interrupt stack frame. */
- movl %eax,EXT(rv86_usp)
- movl TR_SS(%esp),%eax
- movw %ax,EXT(rv86_usp)+4
-
- movl TR_ERR(%esp),%eax
- pushl $dummy_rcd
- pushl %eax
- call EXT(rv86_real_int)
- addl $2*4,%esp
-
- movl %esi,EXT(rv86_usp)
- movl %edi,EXT(rv86_usp)+4
- movl %ebx,EXT(real_tss)+TSS_ESP0
-
- addl $4*4,%esp
- popa
- addl $2*4,%esp
- iret
-
- /* Dummy real_call_data structure (always all zero)
- to use when reflecting hardware interrupts. */
- .comm dummy_rcd,RCD_SIZE
-
diff --git a/i386/pc/rv86/rv86_trap_handler.S b/i386/pc/rv86/rv86_trap_handler.S
deleted file mode 100644
index 793f6b6..0000000
--- a/i386/pc/rv86/rv86_trap_handler.S
+++ /dev/null
@@ -1,167 +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 <mach/machine/eflags.h>
-
-#include "i386_asm.h"
-#include "trap.h"
-#include "trap_asm.h"
-
- .text
-
-ENTRY(rv86_trap_handler)
- cmpl $T_GENERAL_PROTECTION,TR_TRAPNO(%esp)
- jz gpf_from_v86
-
- UNEXPECTED_TRAP
-
-gpf_from_v86:
-
- /* Load the linear/physical-address data segment,
- for easy access to real-mode memory. */
- movl $LINEAR_DS,%eax
- movw %ax,%ds
-
- /* Find the physical address of the trapping instruction (ebx). */
- movzwl TR_CS(%esp),%ebx
- shll $4,%ebx
- addl TR_EIP(%esp),%ebx
-
- /* See if we're just trying to get out of v86 mode. */
- cmpl %ss:EXT(rv86_return_int_pa),%ebx
- je EXT(rv86_return)
-
- /* Check the instruction (al). */
- movb (%ebx),%al
- cmpb $0xcd,%al
- je gpf_int_n
-
- UNEXPECTED_TRAP
-
-
-gpf_int_n:
-
- /* Bump the ip past the int instruction. */
- addw $2,TR_EIP(%esp)
-
- /* Find the real mode interrupt vector number (esi). */
- movzbl 1(%ebx),%esi
-
- /* See if it's a copy-extended-memory interrupt request;
- if so, just handle it here. */
- cmpl $0x15,%esi
- jne 1f
- cmpb $0x87,TR_EAX+1(%esp)
- je copy_ext_mem
-1:
-
- /* XXX The stuff down here is essentially the same as in moss. */
-
-reflect_v86_intr:
-
- /* Find the address of the real mode interrupt vector (esi). */
- shll $2,%esi
-
- /* Make room for the real-mode interrupt stack frame. */
- subw $6,TR_ESP(%esp)
-
- /* Find the physical address of the v86 stack (ebx). */
- movzwl TR_SS(%esp),%ebx
- shll $4,%ebx
- addl TR_ESP(%esp),%ebx
-
- /* Store the return information into the v86 stack frame. */
- movl TR_EIP(%esp),%eax
- movw %ax,(%ebx)
- movl TR_CS(%esp),%eax
- movw %ax,2(%ebx)
- movl TR_EFLAGS(%esp),%eax
- movw %ax,4(%ebx)
-
- /* Find the real-mode interrupt vector to invoke,
- and set up the real_call_thread's kernel stack frame
- to point to it. */
- movl (%esi),%eax
- movw %ax,TR_EIP(%esp)
- shrl $16,%eax
- movw %ax,TR_CS(%esp)
- andl $-1-EFL_IF-EFL_TF,TR_EFLAGS(%esp)
-
- /* Restore saved state and return. */
- addl $4*4,%esp
- popa
- addl $4*2,%esp
- iret
-
-
-
-/* We intercepted a copy-extended-memory software interrupt
- (int 0x15 function 0x87).
- This is used by HIMEM.SYS, for example, to manage extended memory.
- The BIOS's routine isn't going to work in v86 mode,
- so do it ourselves. */
-copy_ext_mem:
-
- /* Find the parameter block provided by the caller (ebx). */
- movzwl TR_V86_ES(%esp),%ebx
- movzwl TR_ESI(%esp),%eax
- shll $4,%ebx
- addl %eax,%ebx
-
- /* Source address (esi). */
- movl 0x12(%ebx),%esi
- andl $0x00ffffff,%esi
-
- /* Destination address (edi). */
- movl 0x1a(%ebx),%edi
- andl $0x00ffffff,%edi
-
- /* Number of bytes (ecx). */
- movzwl TR_ECX(%esp),%ecx
- addl %ecx,%ecx
-
- /* Use the standard i386 bcopy routine to copy the data.
- This assumes it's "friendly" in its use of segment registers
- (i.e. always uses ss for stack data and ds/es for the data to copy).
- The bcopy is simple enough that this should always be true. */
- movw %ds,%ax
- movw %ax,%es
- cld
- pushl %ecx
- pushl %edi
- pushl %esi
- call EXT(bcopy)
- addl $3*4,%esp
-
- /* Clear the carry flag to indicate that the copy was successful.
- AH is also cleared, below. */
- andl $-1-EFL_CF,TR_EFLAGS(%esp)
-
- /* Restore saved state and return. */
- addl $4*4,%esp
- popa
- xorb %ah,%ah
- addl $4*2,%esp
- iret
-
diff --git a/i386/pc/rv86/trap_handler.S b/i386/pc/rv86/trap_handler.S
deleted file mode 100644
index 99254ee..0000000
--- a/i386/pc/rv86/trap_handler.S
+++ /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
- */
-
-#include <mach/machine/asm.h>
-#include <mach/machine/eflags.h>
-
-#include "trap.h"
-#include "trap_asm.h"
-
- .text
-
-ENTRY(trap_handler)
-
- /* See if we came from v86 mode. */
- testl $EFL_VM,TR_EFLAGS(%esp)
- jnz EXT(rv86_trap_handler)
-
- UNEXPECTED_TRAP
-