i386: move math-emu

[pandora-kernel.git] / arch / i386 / math-emu / fpu_aux.c

diff --git a/arch/i386/math-emu/fpu_aux.c b/arch/i386/math-emu/fpu_aux.c
deleted file mode 100644 (file)
index 20886cf..0000000
--- a/arch/i386/math-emu/fpu_aux.c
+++ /dev/null
@@ -1,204 +0,0 @@
-/*---------------------------------------------------------------------------+
- |  fpu_aux.c                                                                |
- |                                                                           |
- | Code to implement some of the FPU auxiliary instructions.                 |
- |                                                                           |
- | Copyright (C) 1992,1993,1994,1997                                         |
- |                  W. Metzenthen, 22 Parker St, Ormond, Vic 3163, Australia |
- |                  E-mail   billm@suburbia.net                              |
- |                                                                           |
- |                                                                           |
- +---------------------------------------------------------------------------*/
-
-#include "fpu_system.h"
-#include "exception.h"
-#include "fpu_emu.h"
-#include "status_w.h"
-#include "control_w.h"
-
-
-static void fnop(void)
-{
-}
-
-static void fclex(void)
-{
-  partial_status &= ~(SW_Backward|SW_Summary|SW_Stack_Fault|SW_Precision|
-                  SW_Underflow|SW_Overflow|SW_Zero_Div|SW_Denorm_Op|
-                  SW_Invalid);
-  no_ip_update = 1;
-}
-
-/* Needs to be externally visible */
-void finit(void)
-{
-  control_word = 0x037f;
-  partial_status = 0;
-  top = 0;            /* We don't keep top in the status word internally. */
-  fpu_tag_word = 0xffff;
-  /* The behaviour is different from that detailed in
-     Section 15.1.6 of the Intel manual */
-  operand_address.offset = 0;
-  operand_address.selector = 0;
-  instruction_address.offset = 0;
-  instruction_address.selector = 0;
-  instruction_address.opcode = 0;
-  no_ip_update = 1;
-}
-
-/*
- * These are nops on the i387..
- */
-#define feni fnop
-#define fdisi fnop
-#define fsetpm fnop
-
-static FUNC const finit_table[] = {
-  feni, fdisi, fclex, finit,
-  fsetpm, FPU_illegal, FPU_illegal, FPU_illegal
-};
-
-void finit_(void)
-{
-  (finit_table[FPU_rm])();
-}
-
-
-static void fstsw_ax(void)
-{
-  *(short *) &FPU_EAX = status_word();
-  no_ip_update = 1;
-}
-
-static FUNC const fstsw_table[] = {
-  fstsw_ax, FPU_illegal, FPU_illegal, FPU_illegal,
-  FPU_illegal, FPU_illegal, FPU_illegal, FPU_illegal
-};
-
-void fstsw_(void)
-{
-  (fstsw_table[FPU_rm])();
-}
-
-
-static FUNC const fp_nop_table[] = {
-  fnop, FPU_illegal, FPU_illegal, FPU_illegal,
-  FPU_illegal, FPU_illegal, FPU_illegal, FPU_illegal
-};
-
-void fp_nop(void)
-{
-  (fp_nop_table[FPU_rm])();
-}
-
-
-void fld_i_(void)
-{
-  FPU_REG *st_new_ptr;
-  int i;
-  u_char tag;
-
-  if ( STACK_OVERFLOW )
-    { FPU_stack_overflow(); return; }
-
-  /* fld st(i) */
-  i = FPU_rm;
-  if ( NOT_EMPTY(i) )
-    {
-      reg_copy(&st(i), st_new_ptr);
-      tag = FPU_gettagi(i);
-      push();
-      FPU_settag0(tag);
-    }
-  else
-    {
-      if ( control_word & CW_Invalid )
-       {
-         /* The masked response */
-         FPU_stack_underflow();
-       }
-      else
-       EXCEPTION(EX_StackUnder);
-    }
-
-}
-
-
-void fxch_i(void)
-{
-  /* fxch st(i) */
-  FPU_REG t;
-  int i = FPU_rm;
-  FPU_REG *st0_ptr = &st(0), *sti_ptr = &st(i);
-  long tag_word = fpu_tag_word;
-  int regnr = top & 7, regnri = ((regnr + i) & 7);
-  u_char st0_tag = (tag_word >> (regnr*2)) & 3;
-  u_char sti_tag = (tag_word >> (regnri*2)) & 3;
-
-  if ( st0_tag == TAG_Empty )
-    {
-      if ( sti_tag == TAG_Empty )
-       {
-         FPU_stack_underflow();
-         FPU_stack_underflow_i(i);
-         return;
-       }
-      if ( control_word & CW_Invalid )
-       {
-         /* Masked response */
-         FPU_copy_to_reg0(sti_ptr, sti_tag);
-       }
-      FPU_stack_underflow_i(i);
-      return;
-    }
-  if ( sti_tag == TAG_Empty )
-    {
-      if ( control_word & CW_Invalid )
-       {
-         /* Masked response */
-         FPU_copy_to_regi(st0_ptr, st0_tag, i);
-       }
-      FPU_stack_underflow();
-      return;
-    }
-  clear_C1();
-
-  reg_copy(st0_ptr, &t);
-  reg_copy(sti_ptr, st0_ptr);
-  reg_copy(&t, sti_ptr);
-
-  tag_word &= ~(3 << (regnr*2)) & ~(3 << (regnri*2));
-  tag_word |= (sti_tag << (regnr*2)) | (st0_tag << (regnri*2));
-  fpu_tag_word = tag_word;
-}
-
-
-void ffree_(void)
-{
-  /* ffree st(i) */
-  FPU_settagi(FPU_rm, TAG_Empty);
-}
-
-
-void ffreep(void)
-{
-  /* ffree st(i) + pop - unofficial code */
-  FPU_settagi(FPU_rm, TAG_Empty);
-  FPU_pop();
-}
-
-
-void fst_i_(void)
-{
-  /* fst st(i) */
-  FPU_copy_to_regi(&st(0), FPU_gettag0(), FPU_rm);
-}
-
-
-void fstp_i(void)
-{
-  /* fstp st(i) */
-  FPU_copy_to_regi(&st(0), FPU_gettag0(), FPU_rm);
-  FPU_pop();
-}
-