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diff --git a/sys/gnu/arch/i386/fpemul/errors.c b/sys/gnu/arch/i386/fpemul/errors.c
deleted file mode 100644
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--- a/sys/gnu/arch/i386/fpemul/errors.c
+++ /dev/null
@@ -1,617 +0,0 @@
-/* $OpenBSD: errors.c,v 1.4 2003/08/08 04:21:44 jason Exp $ */
-/*
- * errors.c
- *
- * The error handling functions for wm-FPU-emu
- *
- *
- * Copyright (C) 1992,1993,1994
- * W. Metzenthen, 22 Parker St, Ormond, Vic 3163,
- * Australia. E-mail billm@vaxc.cc.monash.edu.au
- * All rights reserved.
- *
- * This copyright notice covers the redistribution and use of the
- * FPU emulator developed by W. Metzenthen. It covers only its use
- * in the 386BSD, FreeBSD and NetBSD operating systems. Any other
- * use is not permitted under this copyright.
- *
- * 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 include information specifying
- * that source code for the emulator is freely available and include
- * either:
- * a) an offer to provide the source code for a nominal distribution
- * fee, or
- * b) list at least two alternative methods whereby the source
- * can be obtained, e.g. a publically accessible bulletin board
- * and an anonymous ftp site from which the software can be
- * downloaded.
- * 3. All advertising materials specifically mentioning features or use of
- * this emulator must acknowledge that it was developed by W. Metzenthen.
- * 4. The name of W. Metzenthen may not be used to endorse or promote
- * products derived from this software without specific prior written
- * permission.
- *
- * THIS SOFTWARE IS PROVIDED ``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
- * W. METZENTHEN 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.
- *
- *
- * The purpose of this copyright, based upon the Berkeley copyright, is to
- * ensure that the covered software remains freely available to everyone.
- *
- * The software (with necessary differences) is also available, but under
- * the terms of the GNU copyleft, for the Linux operating system and for
- * the djgpp ms-dos extender.
- *
- * W. Metzenthen June 1994.
- *
- *
- * $FreeBSD: errors.c,v 1.4 1995/03/16 18:11:10 bde Exp $
- *
- */
-
-/*---------------------------------------------------------------------------+
- | Note: |
- | The file contains code which accesses user memory. |
- | Emulator static data may change when user memory is accessed, due to |
- | other processes using the emulator while swapping is in progress. |
- +---------------------------------------------------------------------------*/
-
-
-
-
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/proc.h>
-#include <sys/user.h>
-#include <machine/cpu.h>
-#include <machine/pcb.h>
-
-#include <gnu/arch/i386/fpemul/fpu_emu.h>
-#include <gnu/arch/i386/fpemul/fpu_system.h>
-#include <gnu/arch/i386/fpemul/exception.h>
-#include <gnu/arch/i386/fpemul/status_w.h>
-#include <gnu/arch/i386/fpemul/control_w.h>
-#include <gnu/arch/i386/fpemul/reg_constant.h>
-#include <gnu/arch/i386/fpemul/version.h>
-
-/* */
-#undef PRINT_MESSAGES
-/* */
-
-
-void
-Un_impl(void)
-{
- unsigned char byte1, FPU_modrm;
-
- REENTRANT_CHECK(OFF);
- copyin((u_char *)FPU_ORIG_EIP, &byte1, sizeof(u_char));
- copyin((u_char *)FPU_ORIG_EIP + 1, &FPU_modrm, sizeof(u_char));
-
- printf("Unimplemented FPU Opcode at eip=%p : %02x ",
- FPU_ORIG_EIP, byte1);
-
- if (FPU_modrm >= 0300)
- printf("%02x (%02x+%d)\n", FPU_modrm, FPU_modrm & 0xf8, FPU_modrm & 7);
- else
- printf("/%d\n", (FPU_modrm >> 3) & 7);
- REENTRANT_CHECK(ON);
-
- EXCEPTION(EX_Invalid);
-
-}
-
-
-#ifdef DEBUG
-void
-emu_printall()
-{
- int i;
- static char *tag_desc[] = {"Valid", "Zero", "ERROR", "ERROR",
- "DeNorm", "Inf", "NaN", "Empty"};
- unsigned char byte1, FPU_modrm;
-
- REENTRANT_CHECK(OFF);
- copyin((u_char *)FPU_ORIG_EIP, &byte1, sizeof(u_char));
- copyin((u_char *)FPU_ORIG_EIP + 1, &FPU_modrm, sizeof(u_char));
-
-#ifdef DEBUGGING
- if (status_word & SW_Backward)
- printf("SW: backward compatibility\n");
- if (status_word & SW_C3)
- printf("SW: condition bit 3\n");
- if (status_word & SW_C2)
- printf("SW: condition bit 2\n");
- if (status_word & SW_C1)
- printf("SW: condition bit 1\n");
- if (status_word & SW_C0)
- printf("SW: condition bit 0\n");
- if (status_word & SW_Summary)
- printf("SW: exception summary\n");
- if (status_word & SW_Stack_Fault)
- printf("SW: stack fault\n");
- if (status_word & SW_Precision)
- printf("SW: loss of precision\n");
- if (status_word & SW_Underflow)
- printf("SW: underflow\n");
- if (status_word & SW_Overflow)
- printf("SW: overflow\n");
- if (status_word & SW_Zero_Div)
- printf("SW: divide by zero\n");
- if (status_word & SW_Denorm_Op)
- printf("SW: denormalized operand\n");
- if (status_word & SW_Invalid)
- printf("SW: invalid operation\n");
-#endif /* DEBUGGING */
-
- status_word = status_word & ~SW_Top;
- status_word |= (top & 7) << SW_Top_Shift;
-
- printf("At %p: %02x ", FPU_ORIG_EIP, byte1);
- if (FPU_modrm >= 0300)
- printf("%02x (%02x+%d)\n", FPU_modrm, FPU_modrm & 0xf8, FPU_modrm & 7);
- else
- printf("/%d, mod=%d rm=%d\n",
- (FPU_modrm >> 3) & 7, (FPU_modrm >> 6) & 3, FPU_modrm & 7);
-
- printf(" SW: b=%d st=%d es=%d sf=%d cc=%d%d%d%d ef=%d%d%d%d%d%d\n",
- status_word & 0x8000 ? 1 : 0, /* busy */
- (status_word & 0x3800) >> 11, /* stack top pointer */
- status_word & 0x80 ? 1 : 0, /* Error summary status */
- status_word & 0x40 ? 1 : 0, /* Stack flag */
- status_word & SW_C3 ? 1 : 0, status_word & SW_C2 ? 1 : 0, /* cc */
- status_word & SW_C1 ? 1 : 0, status_word & SW_C0 ? 1 : 0, /* cc */
- status_word & SW_Precision ? 1 : 0, status_word & SW_Underflow ? 1 : 0,
- status_word & SW_Overflow ? 1 : 0, status_word & SW_Zero_Div ? 1 : 0,
- status_word & SW_Denorm_Op ? 1 : 0, status_word & SW_Invalid ? 1 : 0);
-
- printf(" CW: ic=%d rc=%d%d pc=%d%d iem=%d ef=%d%d%d%d%d%d\n",
- control_word & 0x1000 ? 1 : 0,
- (control_word & 0x800) >> 11, (control_word & 0x400) >> 10,
- (control_word & 0x200) >> 9, (control_word & 0x100) >> 8,
- control_word & 0x80 ? 1 : 0,
- control_word & SW_Precision ? 1 : 0, control_word & SW_Underflow ? 1 : 0,
- control_word & SW_Overflow ? 1 : 0, control_word & SW_Zero_Div ? 1 : 0,
- control_word & SW_Denorm_Op ? 1 : 0, control_word & SW_Invalid ? 1 : 0);
-
- for (i = 0; i < 8; i++) {
- FPU_REG *r = &st(i);
- switch (r->tag) {
- case TW_Empty:
- continue;
- break;
- case TW_Zero:
- printf("st(%d) %c .0000 0000 0000 0000 ",
- i, r->sign ? '-' : '+');
- break;
- case TW_Valid:
- case TW_NaN:
- case TW_Denormal:
- case TW_Infinity:
- printf("st(%d) %c .%04x %04x %04x %04x e%+-6d ", i,
- r->sign ? '-' : '+',
- (long) (r->sigh >> 16),
- (long) (r->sigh & 0xFFFF),
- (long) (r->sigl >> 16),
- (long) (r->sigl & 0xFFFF),
- r->exp - EXP_BIAS + 1);
- break;
- default:
- printf("Whoops! Error in errors.c ");
- break;
- }
- printf("%s\n", tag_desc[(int) (unsigned) r->tag]);
- }
-
- printf("[data] %c .%04x %04x %04x %04x e%+-6d ",
- FPU_loaded_data.sign ? '-' : '+',
- (long) (FPU_loaded_data.sigh >> 16),
- (long) (FPU_loaded_data.sigh & 0xFFFF),
- (long) (FPU_loaded_data.sigl >> 16),
- (long) (FPU_loaded_data.sigl & 0xFFFF),
- FPU_loaded_data.exp - EXP_BIAS + 1);
- printf("%s\n", tag_desc[(int) (unsigned) FPU_loaded_data.tag]);
- REENTRANT_CHECK(ON);
-
-}
-#endif
-
-static struct {
- int type;
- char *name;
-} exception_names[] = {
- {
- EX_StackOver, "stack overflow"
- },
- {
- EX_StackUnder, "stack underflow"
- },
- {
- EX_Precision, "loss of precision"
- },
- {
- EX_Underflow, "underflow"
- },
- {
- EX_Overflow, "overflow"
- },
- {
- EX_ZeroDiv, "divide by zero"
- },
- {
- EX_Denormal, "denormalized operand"
- },
- {
- EX_Invalid, "invalid operation"
- },
- {
- EX_INTERNAL, "INTERNAL BUG in " FPU_VERSION
- },
- {
- 0, NULL
- }
-};
-/*
- EX_INTERNAL is always given with a code which indicates where the
- error was detected.
-
- Internal error types:
- 0x14 in e14.c
- 0x1nn in a *.c file:
- 0x101 in reg_add_sub.c
- 0x102 in reg_mul.c
- 0x103 in poly_sin.c
- 0x104 in poly_tan.c
- 0x105 in reg_mul.c
- 0x106 in reg_mov.c
- 0x107 in fpu_trig.c
- 0x108 in reg_compare.c
- 0x109 in reg_compare.c
- 0x110 in reg_add_sub.c
- 0x111 in interface.c
- 0x112 in fpu_trig.c
- 0x113 in reg_add_sub.c
- 0x114 in reg_ld_str.c
- 0x115 in fpu_trig.c
- 0x116 in fpu_trig.c
- 0x117 in fpu_trig.c
- 0x118 in fpu_trig.c
- 0x119 in fpu_trig.c
- 0x120 in poly_atan.c
- 0x121 in reg_compare.c
- 0x122 in reg_compare.c
- 0x123 in reg_compare.c
- 0x2nn in an *.s file:
- 0x201 in reg_u_add.S
- 0x202 in reg_u_div.S
- 0x203 in reg_u_div.S
- 0x204 in reg_u_div.S
- 0x205 in reg_u_mul.S
- 0x206 in reg_u_sub.S
- 0x207 in wm_sqrt.S
- 0x208 in reg_div.S
- 0x209 in reg_u_sub.S
- 0x210 in reg_u_sub.S
- 0x211 in reg_u_sub.S
- 0x212 in reg_u_sub.S
- 0x213 in wm_sqrt.S
- 0x214 in wm_sqrt.S
- 0x215 in wm_sqrt.S
- 0x216 in reg_round.S
- 0x217 in reg_round.S
- 0x218 in reg_round.S
- */
-
-void
-exception(int n)
-{
- int i, int_type;
-
- int_type = 0; /* Needed only to stop compiler warnings */
- if (n & EX_INTERNAL) {
- int_type = n - EX_INTERNAL;
- n = EX_INTERNAL;
- /* Set lots of exception bits! */
- status_word |= (SW_Exc_Mask | SW_Summary | FPU_BUSY);
- } else {
- /* Extract only the bits which we use to set the status word */
- n &= (SW_Exc_Mask);
- /* Set the corresponding exception bit */
- status_word |= n;
- if (status_word & ~control_word & CW_Exceptions)
- status_word |= SW_Summary;
- if (n & (SW_Stack_Fault | EX_Precision)) {
- if (!(n & SW_C1))
- /* This bit distinguishes over- from underflow
- * for a stack fault, and roundup from
- * round-down for precision loss. */
- status_word &= ~SW_C1;
- }
- }
-
- REENTRANT_CHECK(OFF);
- if ((~control_word & n & CW_Exceptions) || (n == EX_INTERNAL)) {
-#ifdef PRINT_MESSAGES
- /* My message from the sponsor */
- printf(FPU_VERSION " " __DATE__ " (C) W. Metzenthen.\n");
-#endif /* PRINT_MESSAGES */
-
- /* Get a name string for error reporting */
- for (i = 0; exception_names[i].type; i++)
- if ((exception_names[i].type & n) == exception_names[i].type)
- break;
-
- if (exception_names[i].type) {
-#ifdef PRINT_MESSAGES
- printf("FP Exception: %s!\n", exception_names[i].name);
-#endif /* PRINT_MESSAGES */
- } else
- printf("FP emulator: Unknown Exception: 0x%04x!\n", n);
-
- if (n == EX_INTERNAL) {
- printf("FP emulator: Internal error type 0x%04x\n", int_type);
-#ifdef DEBUG
- emu_printall();
-#endif
- }
-#ifdef PRINT_MESSAGES
- else
- emu_printall();
-#endif /* PRINT_MESSAGES */
-
- /* The 80486 generates an interrupt on the next non-control
- * FPU instruction. So we need some means of flagging it. We
- * use the ES (Error Summary) bit for this, assuming that this
- * is the way a real FPU does it (until I can check it out),
- * if not, then some method such as the following kludge might
- * be needed. */
-/* regs[0].tag |= TW_FPU_Interrupt; */
- }
- REENTRANT_CHECK(ON);
-
-#ifdef __DEBUG__
- math_abort(SIGFPE);
-#endif /* __DEBUG__ */
-
-}
-
-
-/* Real operation attempted on two operands, one a NaN */
-void
-real_2op_NaN(FPU_REG * a, FPU_REG * b, FPU_REG * dest)
-{
- FPU_REG *x;
- int signalling;
-
- x = a;
- if (a->tag == TW_NaN) {
- if (b->tag == TW_NaN) {
- signalling = !(a->sigh & b->sigh & 0x40000000);
- /* find the "larger" */
- if (*(long long *) &(a->sigl) < *(long long *) &(b->sigl))
- x = b;
- } else {
- /* return the quiet version of the NaN in a */
- signalling = !(a->sigh & 0x40000000);
- }
- } else
-#ifdef PARANOID
- if (b->tag == TW_NaN)
-#endif /* PARANOID */
- {
- signalling = !(b->sigh & 0x40000000);
- x = b;
- }
-#ifdef PARANOID
- else {
- signalling = 0;
- EXCEPTION(EX_INTERNAL | 0x113);
- x = &CONST_QNaN;
- }
-#endif /* PARANOID */
-
- if (!signalling) {
- if (!(x->sigh & 0x80000000)) /* pseudo-NaN ? */
- x = &CONST_QNaN;
- reg_move(x, dest);
- return;
- }
- if (control_word & CW_Invalid) {
- /* The masked response */
- if (!(x->sigh & 0x80000000)) /* pseudo-NaN ? */
- x = &CONST_QNaN;
- reg_move(x, dest);
- /* ensure a Quiet NaN */
- dest->sigh |= 0x40000000;
- }
- EXCEPTION(EX_Invalid);
-
- return;
-}
-/* Invalid arith operation on Valid registers */
-void
-arith_invalid(FPU_REG * dest)
-{
-
- if (control_word & CW_Invalid) {
- /* The masked response */
- reg_move(&CONST_QNaN, dest);
- }
- EXCEPTION(EX_Invalid);
-
- return;
-
-}
-
-
-/* Divide a finite number by zero */
-void
-divide_by_zero(int sign, FPU_REG * dest)
-{
-
- if (control_word & CW_ZeroDiv) {
- /* The masked response */
- reg_move(&CONST_INF, dest);
- dest->sign = (unsigned char) sign;
- }
- EXCEPTION(EX_ZeroDiv);
-
- return;
-
-}
-
-
-/* This may be called often, so keep it lean */
-void
-set_precision_flag_up(void)
-{
- if (control_word & CW_Precision)
- status_word |= (SW_Precision | SW_C1); /* The masked response */
- else
- exception(EX_Precision | SW_C1);
-
-}
-
-
-/* This may be called often, so keep it lean */
-void
-set_precision_flag_down(void)
-{
- if (control_word & CW_Precision) { /* The masked response */
- status_word &= ~SW_C1;
- status_word |= SW_Precision;
- } else
- exception(EX_Precision);
-}
-
-
-int
-denormal_operand(void)
-{
- if (control_word & CW_Denormal) { /* The masked response */
- status_word |= SW_Denorm_Op;
- return 0;
- } else {
- exception(EX_Denormal);
- return 1;
- }
-}
-
-
-void
-arith_overflow(FPU_REG * dest)
-{
-
- if (control_word & CW_Overflow) {
- char sign;
- /* The masked response */
-/* **** The response here depends upon the rounding mode */
- sign = dest->sign;
- reg_move(&CONST_INF, dest);
- dest->sign = sign;
- } else {
- /* Subtract the magic number from the exponent */
- dest->exp -= (3 * (1 << 13));
- }
-
- /* By definition, precision is lost. It appears that the roundup bit
- * (C1) is also set by convention. */
- EXCEPTION(EX_Overflow | EX_Precision | SW_C1);
-
- return;
-
-}
-
-
-void
-arith_underflow(FPU_REG * dest)
-{
-
- if (control_word & CW_Underflow) {
- /* The masked response */
- if (dest->exp <= EXP_UNDER - 63)
- reg_move(&CONST_Z, dest);
- } else {
- /* Add the magic number to the exponent */
- dest->exp += (3 * (1 << 13));
- }
-
- EXCEPTION(EX_Underflow);
-
- return;
-}
-
-
-void
-stack_overflow(void)
-{
-
- if (control_word & CW_Invalid) {
- /* The masked response */
- top--;
- reg_move(&CONST_QNaN, FPU_st0_ptr = &st(0));
- }
- EXCEPTION(EX_StackOver);
-
- return;
-
-}
-
-
-void
-stack_underflow(void)
-{
-
- if (control_word & CW_Invalid) {
- /* The masked response */
- reg_move(&CONST_QNaN, FPU_st0_ptr);
- }
- EXCEPTION(EX_StackUnder);
-
- return;
-
-}
-
-
-void
-stack_underflow_i(int i)
-{
-
- if (control_word & CW_Invalid) {
- /* The masked response */
- reg_move(&CONST_QNaN, &(st(i)));
- }
- EXCEPTION(EX_StackUnder);
-
- return;
-
-}
-
-
-void
-stack_underflow_pop(int i)
-{
-
- if (control_word & CW_Invalid) {
- /* The masked response */
- reg_move(&CONST_QNaN, &(st(i)));
- pop();
- }
- EXCEPTION(EX_StackUnder);
-
- return;
-
-}
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