genregmove.awk

来自「C++ 编写的EROS RTOS」· AWK 代码 · 共 118 行

#
# Copyright (C) 1998, 1999, Jonathan S. Shapiro.
#
# This file is part of the EROS Operating System.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2,
# or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#

BEGIN {
  nmask = 0;
  nunit = 0;
  nfx = 0;
  nfpu = 0;
  last = 14;
}

/^keysize/ {
  keysize = $2;
}

/^gen/	{
  if ($6 != "root")
    printf("HELP!!! all 'gen' regs should be in ROOT.\n");
  
  to_fix[nfx] = sprintf("  %s = *((%s *) (ROOTSLOT(%d) + %d + 4)); \\\n", $2, $4, $7, $8);
  from_fix[nfx] = sprintf("  *((%s *)(ROOTSLOT(%d) + %d + 4)) = %s; \\\n", $4, $7, $8, $2);
  nfx++;
}

/^fix/	{
  if ($6 == "*")
    next;
  
  if ($6 == "root") {
    to_fix[nfx] = sprintf("  fixRegs.%s = *((%s *) (ROOTSLOT(%d) + %d + 4)); \\\n", $2, $4, $7, $8);
    from_fix[nfx] = sprintf("  *((%s *)(ROOTSLOT(%d) + %d + 4)) = fixRegs.%s; \\\n", $4, $7, $8, $2);
  }
  else {
    to_fix[nfx] = sprintf("  fixRegs.%s = *((%s *) (ANXSLOT(%d,%d) + %d + 4)); \\\n", $2, $4, $6, $7, $8);
    from_fix[nfx] = sprintf("  *((%s *)(ANXSLOT(%d,%d) + %d + 4)) = fixRegs.%s; \\\n", $4, $6, $7, $8, $2);
  }
  nfx++;
}

/^stat/	{
  if ($6 == "*")
    next;
  
  if ($6 == "root") {
    to_fix[nfx] = sprintf("  stats.%s = *((%s *) (ROOTSLOT(%d) + %d + 4)); \\\n", $2, $4, $7, $8);
    from_fix[nfx] = sprintf("  *((%s *)(ROOTSLOT(%d) + %d + 4)) = stats.%s; \\\n", $4, $7, $8, $2);
  }
  else {
    to_fix[nfx] = sprintf("  fixRegs.%s = *((%s *) (ANXSLOT(%d,%d) + %d + 4)); \\\n", $2, $4, $6, $7, $8);
    from_fix[nfx] = sprintf("  *((%s *)(ANXSLOT(%d,%d) + %d + 4)) = fixRegs.%s; \\\n", $4, $6, $7, $8, $2);
  }
  nfx++;
}

/^fpu/	{
  if ($6 == "*")
    next;
  
  if ($6 == "root") {
    to_fpu[nfpu] = sprintf("  fpuRegs.%s = *((%s *) (ROOTSLOT(%d) + %d + 4)); \\\n", $2, $4, $7, $8);
    from_fpu[nfpu] = sprintf("  *((%s *)(ROOTSLOT(%d) + %d + 4)) = fpuRegs.%s; \\\n", $4, $7, $8, $2);
  }
  else {
    to_fpu[nfpu] = sprintf("  fpuRegs.%s = *((%s *) (ANXSLOT(%d,%d) + %d + 4)); \\\n", $2, $4, $6, $7, $8);
    from_fpu[nfpu] = sprintf("  *((%s *)(ANXSLOT(%d,%d) + %d + 4)) = fpuRegs.%s; \\\n", $4, $6, $7, $8, $2);
  }
  nfpu++;
}

END	{
  printf("#ifndef __GEN_REGMOVE_HXX__\n");	
  printf("#define __GEN_REGMOVE_HXX__\n\n");	

  printf("/* This file is automatically generated and is hereby\n");
  printf("   placed in the public domain */\n\n");
  printf("#define ROOTSLOT(x) (rootkey0 + %d*(x))\n", keysize);
  printf("#define ANXSLOT(anx,x) (annex##anx + %d*(x))\n", keysize);
  printf("#define LOAD_FIX_REGS \\\n");
  for (i = 0; i < nfx; i++)
    printf(to_fix[i]);
  printf("\n");

  printf("#define UNLOAD_FIX_REGS \\\n");
  for (i = 0; i < nfx; i++)
    printf(from_fix[i]);
  printf("\n");

  printf("#define LOAD_FLOAT_REGS \\\n");
  for (i = 0; i < nfx; i++)
    printf(to_fpu[i]);
  printf("\n");

  printf("#define UNLOAD_FLOAT_REGS \\\n");
  for (i = 0; i < nfx; i++)
    printf(from_fpu[i]);
  printf("\n");

  printf("#endif /* __GEN_REGMOVE_HXX__ */\n");	
}