From: mickey <mickey@openbsd.org>
Date: Sat, 5 Apr 1997 18:56:14 +0000 (+0000)
Subject: put gdt & idt in the separate file.
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=b5ca7a46792d90aa18739faea8531c2267b27ec7;p=openbsd

put gdt & idt in the separate file.
print trapno in dump_regs.
no more NO_IDTR.
---

diff --git a/sys/arch/i386/stand/Makefile.inc b/sys/arch/i386/stand/Makefile.inc
index 07fe7bc875a..c9c7d202f1b 100644
--- a/sys/arch/i386/stand/Makefile.inc
+++ b/sys/arch/i386/stand/Makefile.inc
@@ -1,10 +1,9 @@
-#	$OpenBSD: Makefile.inc,v 1.4 1997/04/04 04:47:44 mickey Exp $
+#	$OpenBSD: Makefile.inc,v 1.5 1997/04/05 18:56:14 mickey Exp $
 
 #CPPFLAGS+=-nostdinc -I/sys
 CPPFLAGS+=-Wall -Werror -I. -Imachine
 SACFLAGS+=-Wa,-R -fno-common -fpack-struct -fno-builtin -fomit-frame-pointer
 CPPFLAGS+=-D_STANDALONE
-# CPPFLAGS+=-DNO_IDTR
 CPPFLAGS+=-DSAVE_MEMORY
 CPPFLAGS+=-DDEBUG
 # CPPFLAGS+=-DBIOS_DEBUG
diff --git a/sys/arch/i386/stand/boot/srt0.S b/sys/arch/i386/stand/boot/srt0.S
index a947e076954..1ffdc191a87 100644
--- a/sys/arch/i386/stand/boot/srt0.S
+++ b/sys/arch/i386/stand/boot/srt0.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: srt0.S,v 1.3 1997/04/04 04:47:46 mickey Exp $	*/
+/*	$OpenBSD: srt0.S,v 1.4 1997/04/05 18:56:19 mickey Exp $	*/
 /*	$NetBSD: srt0.c,v 1.3 1994/10/27 04:21:59 cgd Exp $	*/
 
 /*-
@@ -49,9 +49,7 @@
 	.globl	_boot
 	.globl	__rtt
 	.globl	_Gdtr
-#ifndef NO_IDTR
 	.globl	_Idtr_prot
-#endif
 	.globl	_codeseg
 
 	.text
@@ -71,10 +69,8 @@ start_boot:
 	movl	%ax, %es
 	movl	%ax, %fs
 	movl	%ax, %gs
-#ifndef NO_IDTR
-	/* load idtr for debugger */
+	/* load idtr for interrupts */
 	lidt	_Idtr_prot
-#endif
 
 #ifdef DEBUG
 	movl	$0xb80a4, %ebx
@@ -111,35 +107,3 @@ __rtt:
 	movl	$0, %esp	# segment violation
 	ret
 
-	.data
-
-	.align	3
-gdt:
-null:		/* 0x00 : null */
-	.space	8
-		/* 0x08 : flat code */
-	.word	0xFFFF			# lolimit
-	.word	0			# lobase
-	.byte	0			# midbase
-	.byte	SDT_MEMERAC | 0 | 0x80	# RWXAC, dpl = 0, present
-	.byte	0xf | 0 | 0x40 | 0x80	# hilimit, xx, 32bit, 4k granularity
-	.byte	0			# hibase
-		/* 0x10 : flat data */
-	.word	0xFFFF			# lolimit
-	.word	0			# lobase
-	.byte	0			# midbase
-	.byte	SDT_MEMRWA | 0 | 0x80	# RWA, dpl = 0, present
-	.byte	0xf | 0 | 0x40 | 0x80	# hilimit, xx, 32bit, 4k granularity
-	.byte	0			# hibase
-		/* 0x18 : 16 bit code */
-	.word	0xFFFF			# lolimit
-	.word	0			# lobase
-	.byte	0			# midbase
-	.byte	SDT_MEMERAC | 0 | 0x80	# RWXAC, dpl = 0, present
-	.byte	0xf | 0 | 0 | 0		# hilimit, xx, 16bit, byte granularity
-	.byte	0			# hibase
-_Gdtr:	.word	. - gdt - 1
-	.long	gdt
-	.word	0
-
-_codeseg:	.long	0
diff --git a/sys/arch/i386/stand/libsa/Makefile b/sys/arch/i386/stand/libsa/Makefile
index 87ff92e9159..d6cfd1f3151 100644
--- a/sys/arch/i386/stand/libsa/Makefile
+++ b/sys/arch/i386/stand/libsa/Makefile
@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile,v 1.5 1997/04/01 04:52:44 mickey Exp $
+#	$OpenBSD: Makefile,v 1.6 1997/04/05 18:56:22 mickey Exp $
 
 
 LIB=	sa
@@ -39,7 +39,8 @@ SRCS+=	debug.c debug_aout.c debug_i386.S
 
 # i386 stuff
 SRCS+=	asm.S bioscom.S biosdev.c biosdisk.S bioskbd.S biostime.S biosmem.S \
-	dev_i386.c gateA20.c memprobe.c real_prot.S unixsys.S exec_i386.S
+	dev_i386.c gateA20.c memprobe.c real_prot.S unixsys.S exec_i386.S \
+	gidt.S
 
 NOPROFILE=noprofile
 NOPIC=nopic
diff --git a/sys/arch/i386/stand/libsa/debug.c b/sys/arch/i386/stand/libsa/debug.c
index 9ecd8468190..d1ec26d31d5 100644
--- a/sys/arch/i386/stand/libsa/debug.c
+++ b/sys/arch/i386/stand/libsa/debug.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: debug.c,v 1.1 1997/04/01 04:52:45 mickey Exp $	*/
+/*	$OpenBSD: debug.c,v 1.2 1997/04/05 18:56:24 mickey Exp $	*/
 
 /*
  * Copyright (c) 1997 Michael Shalayeff
@@ -47,10 +47,12 @@ debug_init()
 }
 
 void
-dump_regs()
+dump_regs(trapno)
+	int trapno;
 {
 	int i;
 
+	printf("trap: %u\n", trapno);
 	for (i = 0; i < nreg; putchar((++i % 4)?' ':'\n'))
 		printf ("%s=0x%x", reg_names[i], *reg_values[i]);
 	if (i % 4)
diff --git a/sys/arch/i386/stand/libsa/debug_i386.S b/sys/arch/i386/stand/libsa/debug_i386.S
index fdd4b1b38f2..8c1db5c5b01 100644
--- a/sys/arch/i386/stand/libsa/debug_i386.S
+++ b/sys/arch/i386/stand/libsa/debug_i386.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: debug_i386.S,v 1.2 1997/04/04 04:47:47 mickey Exp $	*/
+/*	$OpenBSD: debug_i386.S,v 1.3 1997/04/05 18:56:25 mickey Exp $	*/
 
 /*
  * Copyright (c) 1997 Michael Shalayeff
@@ -41,163 +41,69 @@
 #undef _LOCORE
 
 	.data
-#ifndef NO_IDTR
-
-	.globl	_Idtr_real
-	.align 3
-_Idtr_real:
-	.word	1023
-	.long	0
-
-	.globl	_Idtr_prot
-
-	.align 3
-idt:	/*
-	 * We beleive that all the boot code fits into
-	 * 64k, so no need for high 16 bit of procedure address (;
-	 *
-	 */
-#define IPROC(n)	X/**/n
-#define IDTENTRY(proc) \
-	.word	IPROC(proc)		/* lo offset handler */ ; \
-	.word	0x8			/* handler %cs */ ; \
-	.byte	0			/* reserved */ ; \
-	.byte	0x80 | SDT_SYS386TGT /* present, dpl=0, 32bit trap gate */ ; \
-	.word	0			/* hi offset handler */
-
-	IDTENTRY(de)	/* #DE divide by zero */
-	IDTENTRY(db)	/* #DB debug */
-	IDTENTRY(nmi)	/* NMI */
-	IDTENTRY(bp)	/* #BP breakpoint */
-	IDTENTRY(of)	/* #OF overflow */
-	IDTENTRY(br)	/* #BR BOUND range exceeded */
-	IDTENTRY(ud)	/* #UD invalid opcode */
-	IDTENTRY(nm)	/* #NM device not available */
-	IDTENTRY(df)	/* #DF double fault */
-	IDTENTRY(fo)	/* #FO coprocessor segment overrun */
-	IDTENTRY(ts)	/* #TS innvalid TSS */
-	IDTENTRY(np)	/* #NP segmant not present */
-	IDTENTRY(ss)	/* #SS stack fault */
-	IDTENTRY(gp)	/* #GP general protection */
-	IDTENTRY(pf)	/* #PF page fault */
-	IDTENTRY(xx)	/*	Intel reserved */
-	IDTENTRY(mf)	/* #MF floating point error */
-	IDTENTRY(ac)	/* #AC alignment check */
-	IDTENTRY(mc)	/* #MC machine check */
-			/*	Intel reserved (19-31) */
-	IDTENTRY(xx); IDTENTRY(xx); IDTENTRY(xx); IDTENTRY(xx)
-	IDTENTRY(xx); IDTENTRY(xx); IDTENTRY(xx); IDTENTRY(xx)
-	IDTENTRY(xx); IDTENTRY(xx); IDTENTRY(xx); IDTENTRY(xx)
-	IDTENTRY(xx)
-			/*	Maskable interrupts(32-255) */
-
-_Idtr_prot:
-	.word	. - idt
-	.long	idt
-
-	.text
-
-#define IENTRY(name,type) \
-IPROC(name): \
-	pushl	$type ; \
-	jmp	alltraps
-#define IENTRY_ERR(name,err,type) \
-IPROC(name): \
-	pushl	$err ; \
-	pushl	$type ; \
-	jmp	alltraps
-
-IPROC(xx):
-	pushl	$1
-	pushl	$256
-	jmp	alltraps
-
-IENTRY_ERR(de,0,T_DIVIDE)
-IENTRY_ERR(db,0,T_TRCTRAP)
-IENTRY_ERR(nmi,0,T_NMI)
-IENTRY_ERR(bp,0,T_BPTFLT)
-IENTRY_ERR(of,0,T_OFLOW)
-IENTRY_ERR(br,0,T_BOUND)
-IENTRY_ERR(ud,0,T_PRIVINFLT)
-IENTRY_ERR(nm,0,T_DNA)
-IENTRY(df,T_DOUBLEFLT)
-IENTRY_ERR(fo,0,T_FPOPFLT)
-IENTRY(ts,T_TSSFLT)
-IENTRY(np,T_SEGNPFLT)
-IENTRY(ss,T_STKFLT)
-IENTRY(gp,T_PROTFLT)
-IENTRY(pf,T_PAGEFLT)
-IENTRY_ERR(mf,0,T_ARITHTRAP)
-IENTRY(ac,T_ALIGNFLT)
-IENTRY(mc,T_MACHK)
+	.globl	alltraps
 
 alltraps:
+	pushal
+	pushl	%ds
+	pushl	%es
 #ifdef	DEBUG
 	movl	$0xb8280, %edi
-	movl	$0x47304731, (%edi)
+	movl	$0x47314730, (%edi)
 #endif
-	/* lcall is busted */
-	pushl	$0x8
-	pushl	$1f
-	ljmp	$0x8, $_check_regs
+	call	_check_regs
 1:
-	addl	$0x8, %esp
 #ifdef	DEBUG
 	movl	$0xb8290, %edi
-	movl	$0x47384739, (%edi)
+	movl	$0x47394738, (%edi)
 #endif
+	popl	%es
+	popl	%ds
+	popal
+	addl	$0x8, %esp
 	iret
 
-#endif
-
 	.text
 
 ENTRY(check_regs)
 #ifdef	DEBUG
 	movl	$0xb8284, %edi
-	movl	$0x47324733, (%edi)
+	movl	$0x47334732, (%edi)
 #endif
-	pushal		# 8 ones
-	pushl	%ds
-	pushl	%es
-	pushl	%fs
-	pushl	%gs
 	movl	$0x10, %eax
 	movl	%ax, %ds
 	movl	$_reg, %edi
 	cld
-	movl	0x0b*4(%esp), %eax; stosl # %eax
-	movl	0x0a*4(%esp), %eax; stosl # %ecx
-	movl	0x09*4(%esp), %eax; stosl # %edx
-	movl	0x08*4(%esp), %eax; stosl # %ebx
-	movl	0x07*4(%esp), %eax; stosl # %esp
-	movl	0x06*4(%esp), %eax; stosl # %ebp
-	movl	0x05*4(%esp), %eax; stosl # %esi
-	movl	0x04*4(%esp), %eax; stosl # %edi
-	movl	0x10*4(%esp), %eax; stosl # %eip
-	movl	0x12*4(%esp), %eax; stosl # %eflags
-	movl	0x11*4(%esp), %eax; stosl # %cs
+	movl	0x0a(%esp,4), %eax; stosl # %eax
+	movl	0x09(%esp,4), %eax; stosl # %ecx
+	movl	0x08(%esp,4), %eax; stosl # %edx
+	movl	0x07(%esp,4), %eax; stosl # %ebx
+	movl	0x06(%esp,4), %eax; stosl # %esp
+	movl	0x05(%esp,4), %eax; stosl # %ebp
+	movl	0x04(%esp,4), %eax; stosl # %esi
+	movl	0x03(%esp,4), %eax; stosl # %edi
+	movl	0x0d(%esp,4), %eax; stosl # %eip
+	movl	0x0f(%esp,4), %eax; stosl # %eflags
+	movl	0x0e(%esp,4), %eax; stosl # %cs
 	movl		%ss,  %eax; stosl # %ss
-	movl	0x03*4(%esp), %eax; stosl # %ds
-	movl	0x02*4(%esp), %eax; stosl # %es
-	movl	0x01*4(%esp), %eax; stosl # %fs
-	movl	0x00*4(%esp), %eax; stosl # %gs
+	movl	0x02(%esp,4), %eax; stosl # %ds
+	movl	0x01(%esp,4), %eax; stosl # %es
+	movl		%fs,  %eax; stosl # %fs
+	movl		%gs,  %eax; stosl # %gs
 
 #ifdef	DEBUG
 	movl	$0xb8288, %edi
-	movl	$0x47344735, (%edi)
+	movl	$0x47354734, (%edi)
 #endif
+	movl	0x0b(%esp,4), %eax	# trapno
+	pushl	%eax
 	call	_C_LABEL(dump_regs)
+	popl	%eax
 
 #ifdef	DEBUG
 	movl	$0xb828c, %edi
-	movl	$0x47364737, (%edi)
+	movl	$0x47374736, (%edi)
 #endif
-	popl	%gs
-	popl	%fs
-	popl	%es
-	popl	%ds
-	popal
-	lret
+	ret
 
 
diff --git a/sys/arch/i386/stand/libsa/gidt.S b/sys/arch/i386/stand/libsa/gidt.S
new file mode 100644
index 00000000000..f6fc305f224
--- /dev/null
+++ b/sys/arch/i386/stand/libsa/gidt.S
@@ -0,0 +1,166 @@
+/*	$OpenBSD: gidt.S,v 1.1 1997/04/05 18:56:27 mickey Exp $	*/
+
+/*
+ * Copyright (c) 1997 Michael Shalayeff
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Michael Shalayeff.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+#include <machine/asm.h>
+#include <machine/psl.h>
+#define _LOCORE
+#include <machine/segments.h>
+#include <machine/trap.h>
+#include <debug_md.h>
+#undef _LOCORE
+
+
+	.data
+	.globl	_Gdtr
+	.globl	_codeseg
+
+	.align	3
+gdt:
+		/* 0x00 : null */
+	.space	8
+		/* 0x08 : flat code */
+	.word	0xFFFF			# lolimit
+	.word	0			# lobase
+	.byte	0			# midbase
+	.byte	SDT_MEMERA | 0 | 0x80	# RWXA, dpl = 0, present
+	.byte	0xf | 0 | 0x40 | 0x80	# hilimit, xx, 32bit, 4k granularity
+	.byte	0			# hibase
+		/* 0x10 : flat data */
+	.word	0xFFFF			# lolimit
+	.word	0			# lobase
+	.byte	0			# midbase
+	.byte	SDT_MEMRWA | 0 | 0x80	# RWA, dpl = 0, present
+	.byte	0xf | 0 | 0x40 | 0x80	# hilimit, xx, 32bit, 4k granularity
+	.byte	0			# hibase
+		/* 0x18 : 16 bit code */
+	.word	0xFFFF			# lolimit
+	.word	0			# lobase
+	.byte	0			# midbase
+	.byte	SDT_MEMERA | 0 | 0x80	# RWXA, dpl = 0, present
+	.byte	0xf | 0 | 0 | 0		# hilimit, xx, 16bit, byte granularity
+	.byte	0			# hibase
+_Gdtr:	.word	. - gdt - 1
+	.long	gdt
+	.word	0
+
+_codeseg:	.long	0
+
+	.globl	_Idtr_real
+	.align 3
+_Idtr_real:
+	.word	1023
+	.long	0
+
+	.globl	_Idtr_prot
+
+	.align 3
+idt:	/*
+	 * We beleive that all the boot code fits into
+	 * 64k, so no need for high 16 bit of procedure address (;
+	 *
+	 */
+#define IPROC(n)	X/**/n
+#define IDTENTRY(proc) \
+	.word	IPROC(proc)		/* lo offset handler */ ; \
+	.word	0x8			/* handler %cs */ ; \
+	.byte	0			/* reserved */ ; \
+	.byte	0x80 | SDT_SYS386TGT /* present, dpl=0, 32bit trap gate */ ; \
+	.word	0			/* hi offset handler */
+
+	IDTENTRY(de)	/* #DE divide by zero */
+	IDTENTRY(db)	/* #DB debug */
+	IDTENTRY(nmi)	/* NMI */
+	IDTENTRY(bp)	/* #BP breakpoint */
+	IDTENTRY(of)	/* #OF overflow */
+	IDTENTRY(br)	/* #BR BOUND range exceeded */
+	IDTENTRY(ud)	/* #UD invalid opcode */
+	IDTENTRY(nm)	/* #NM device not available */
+	IDTENTRY(df)	/* #DF double fault */
+	IDTENTRY(fo)	/* #FO coprocessor segment overrun */
+	IDTENTRY(ts)	/* #TS innvalid TSS */
+	IDTENTRY(np)	/* #NP segmant not present */
+	IDTENTRY(ss)	/* #SS stack fault */
+	IDTENTRY(gp)	/* #GP general protection */
+	IDTENTRY(pf)	/* #PF page fault */
+	IDTENTRY(xx)	/*	Intel reserved */
+	IDTENTRY(mf)	/* #MF floating point error */
+	IDTENTRY(ac)	/* #AC alignment check */
+	IDTENTRY(mc)	/* #MC machine check */
+			/*	Intel reserved (19-31) */
+	IDTENTRY(xx); IDTENTRY(xx); IDTENTRY(xx); IDTENTRY(xx)
+	IDTENTRY(xx); IDTENTRY(xx); IDTENTRY(xx); IDTENTRY(xx)
+	IDTENTRY(xx); IDTENTRY(xx); IDTENTRY(xx); IDTENTRY(xx)
+	IDTENTRY(xx)
+			/*	Maskable interrupts(32-255) */
+
+_Idtr_prot:
+	.word	. - idt
+	.long	idt
+
+	.text
+	.globl	alltraps
+
+#define IENTRY(name,type) \
+IPROC(name): \
+	pushl	$type ; \
+	jmp	alltraps
+#define IENTRY_ERR(name,err,type) \
+IPROC(name): \
+	pushl	$err ; \
+	pushl	$type ; \
+	jmp	alltraps
+
+IPROC(xx):
+	pushl	$1
+	pushl	$256
+	jmp	alltraps
+
+IENTRY_ERR(de,0,T_DIVIDE)
+IENTRY_ERR(db,0,T_TRCTRAP)
+IENTRY_ERR(nmi,0,T_NMI)
+IENTRY_ERR(bp,0,T_BPTFLT)
+IENTRY_ERR(of,0,T_OFLOW)
+IENTRY_ERR(br,0,T_BOUND)
+IENTRY_ERR(ud,0,T_PRIVINFLT)
+IENTRY_ERR(nm,0,T_DNA)
+IENTRY(df,T_DOUBLEFLT)
+IENTRY_ERR(fo,0,T_FPOPFLT)
+IENTRY(ts,T_TSSFLT)
+IENTRY(np,T_SEGNPFLT)
+IENTRY(ss,T_STKFLT)
+IENTRY(gp,T_PROTFLT)
+IENTRY(pf,T_PAGEFLT)
+IENTRY_ERR(mf,0,T_ARITHTRAP)
+IENTRY(ac,T_ALIGNFLT)
+IENTRY(mc,T_MACHK)
+
diff --git a/sys/arch/i386/stand/libsa/real_prot.S b/sys/arch/i386/stand/libsa/real_prot.S
index ff7b4beaa6d..04737039640 100644
--- a/sys/arch/i386/stand/libsa/real_prot.S
+++ b/sys/arch/i386/stand/libsa/real_prot.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: real_prot.S,v 1.3 1997/03/31 23:06:31 mickey Exp $	*/
+/*	$OpenBSD: real_prot.S,v 1.4 1997/04/05 18:56:28 mickey Exp $	*/
 
 /*
  * Mach Operating System
@@ -63,10 +63,8 @@ WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 	.globl	_codeseg
 	.globl	_Gdtr
-#ifndef NO_IDTR
 	.globl	_Idtr_prot
 	.globl	_Idtr_real
-#endif
 
 	.text
 
@@ -109,10 +107,8 @@ ENTRY(real_to_prot)
 	movl	%ax, %fs
 	movl	%ax, %gs
 
-#ifndef NO_IDTR
 	/* load idtr so we can debug */
 	lidt	_Idtr_prot
-#endif
 	ret
 
 /*
@@ -149,12 +145,11 @@ ENTRY(prot_to_real)
 	movl	%ax, %es
 	movl	%ax, %fs
 	movl	%ax, %gs
-#ifndef	NO_IDTR
 	/* load idtr so we can debug */
 	addr32
 	data32
 	lidt	_Idtr_real
-#endif
+
 	sti
 	data32
 	ret