--- old/src/hotspot/cpu/sparc/args.cc	2020-05-01 02:28:27.358954762 -0700
+++ /dev/null	2020-03-09 18:57:19.455001459 -0700
@@ -1,309 +0,0 @@
-/*
- * Copyright (c) 2002, 2006, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code 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
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- *  
- */
-
-#include <stdio.h>
-#include <string.h>
-
-static const int R_O0_num = 1000;
-static const int R_I0_num = 2000;
-static const int R_F0_num = 3000;
-static const int R_F1_num = R_F0_num + 1;
-static const int R_F2_num = R_F0_num + 2;
-static const int STACK_num= 4000;
-
-static bool LP64 = false;
-static bool LONGS_IN_ONE_ENTRY = false;
-
-static const int Op_RegI = 'I';
-static const int Op_RegP = 'P';
-static const int Op_RegF = 'F';
-static const int Op_RegD = 'D';
-static const int Op_RegL = 'L';
-static const int SPARC_ARGS_IN_REGS_NUM=6;
-
-static void print_reg( int reg ) {
-  if( reg == 0 )
-    printf("__");               // halve's
-  else if( reg >= STACK_num && reg < STACK_num+100 )
-    printf("S%d_",reg - STACK_num);
-  else if( reg >= R_F0_num && reg < R_F0_num+100 )
-    printf("F%d_",reg - R_F0_num);
-  else if( reg >= R_O0_num && reg < R_O0_num+100 ) {
-    if( LONGS_IN_ONE_ENTRY ) {
-      reg -= R_O0_num;
-      printf("O%d",reg>>1);
-      printf(reg&1 ? "H" : "L");
-    } else
-      printf("O%d_",reg - R_O0_num);
-  } else
-    printf("Wretched: %d\n", reg);
-}
-
-static void print_convention( int *sig, const char *s, int length ) {
-  // Print it out
-  for( int i = 0; i < length; i++) {
-    if( sig[i] == 0 ) continue; // do not print 'halves'
-    print_reg( sig[i] & 0xFFFF );
-    int reg = sig[i] >> 16;
-    if( reg ) {
-      printf(":");
-      print_reg( reg );
-    } else {
-      printf("    ");
-    }
-    printf("  ");
-  }
-  printf("\n");
-}
-
-static int INT_SCALE( int x ) {
-  return LONGS_IN_ONE_ENTRY ? (x<<1) : x;
-}
-
-static void java_convention( int *sig, const char *s, int length ) {
-  if( LP64 && !LONGS_IN_ONE_ENTRY ) {
-    printf("LP64 and 2-reg longs not supported\n");
-    return;
-  }
-  for( int i = 0; i < length; i++ )
-    sig[i] = s[i];              // Reset sig array
-  bool is_outgoing = true;
-
-  int int_base = (is_outgoing ? R_O0_num : R_I0_num);
-
-  // Convention is to pack the first 6 int/oop args into the first 6
-  // registers (I0-I5), extras spill to the stack.  Then pack the first
-  // 32 float args into F0-F31, extras spill to the stack.  Then pad
-  // all register sets to align.  Then put longs and doubles into the
-  // same registers as they fit, else spill to the stack.
-  int int_reg_max = SPARC_ARGS_IN_REGS_NUM;
-  int flt_reg_max = 32;
-  
-  // Count int/oop and float args.  See how many stack slots we'll need
-  // and where the longs & doubles will go.
-  int int_reg_cnt   = 0;
-  int flt_reg_cnt   = 0;
-  int stk_reg_pairs = 0;
-  for( int i = 0; i < length; i++) {
-    switch( sig[i] ) {
-    case Op_RegL:               // Longs-in-1-reg compete with int args
-      if( LONGS_IN_ONE_ENTRY ) { 
-        if( int_reg_cnt < int_reg_max ) int_reg_cnt++;
-      }
-      break;
-    case Op_RegP:
-      if( int_reg_cnt < int_reg_max ) int_reg_cnt++;
-      else if( !LP64 )                stk_reg_pairs++;
-      break;
-    case Op_RegI:
-      if( int_reg_cnt < int_reg_max ) int_reg_cnt++;
-      else                            stk_reg_pairs++;
-      break;
-    case Op_RegF:
-      if( flt_reg_cnt < flt_reg_max ) flt_reg_cnt++;
-      else                            stk_reg_pairs++;
-      break;
-    }
-  }
-
-  // This is where the longs/doubles start on the stack.
-  stk_reg_pairs = (stk_reg_pairs+1) & ~1; // Round
-  
-  int int_reg_pairs = (int_reg_cnt+1) & ~1; // 32-bit 2-reg longs only
-  int flt_reg_pairs = (flt_reg_cnt+1) & ~1;
-
-  int stk_reg = 0;
-  int int_reg = 0;
-  int flt_reg = 0;
-  
-  // Now do the signature layout
-  for( int i = 0; i < length; i++) {
-    int tmp = sig[i];
-    if( tmp == Op_RegP )
-      tmp = LP64 ? Op_RegL : Op_RegI;   // Treat ptrs and ints or long accordingly
-    switch( tmp ) {
-    case Op_RegI:
-//  case Op_RegP: 
-      if( int_reg < int_reg_max) tmp = INT_SCALE(int_reg++) + int_base;
-      else                       tmp = STACK_num + stk_reg++;
-      sig[i] = tmp;
-      break;
-
-    case Op_RegL: 
-      if( sig[i] != Op_RegP && sig[i+1] != 'h' ) { printf("expecting (h)alf, found %c\n", sig[i+1]); return; }
-//  case Op_RegP: 
-      if( LONGS_IN_ONE_ENTRY ) {
-        if( int_reg < int_reg_max ) {
-          tmp = INT_SCALE(int_reg++) + int_base;
-        } else {
-          tmp = STACK_num + stk_reg_pairs;
-          stk_reg_pairs += 2;
-        }
-      } else {
-        if( int_reg_pairs < int_reg_max ) {
-          tmp = int_reg_pairs + int_base;
-          int_reg_pairs += 2;
-        } else {
-          tmp = STACK_num + stk_reg_pairs;
-          stk_reg_pairs += 2;
-        }
-      }
-      sig[i] = tmp | (tmp+1)<<16; // Smear to pair
-      break;
-
-    case Op_RegF: 
-      sig[i] = (flt_reg < flt_reg_max) ? (R_F0_num + flt_reg++) : STACK_num + stk_reg++;
-      break;
-    case Op_RegD: 
-      if( sig[i+1] != 'h' ) { printf("expecting (h)alf, found %c\n", sig[i+1]); return; }
-      if( flt_reg_pairs < flt_reg_max ) {
-        tmp = R_F0_num + flt_reg_pairs;
-        flt_reg_pairs += 2;
-      } else {
-        tmp = STACK_num + stk_reg_pairs;
-        stk_reg_pairs += 2;
-      }
-      sig[i] = tmp | (tmp+1)<<16; // Smear to pair
-      break;
-    case 'h': sig[i] = 0; break;
-    default:
-      printf("Bad character: %c\n", sig[i] );
-      return;
-    }
-  }
-
-  printf("java ");
-  printf(LP64 ? "LP64 " : "LP32 ");
-  printf(LONGS_IN_ONE_ENTRY ? "long1: " : "long2: ");
-  print_convention(sig,s,length);
-}
-
-static int int_stk_helper( int i ) {
-  if( i < 6 ) return R_O0_num + (LONGS_IN_ONE_ENTRY ? i<<1 : i);
-  else        return STACK_num + (LP64              ? i<<1 : i);
-}
-
-static void native_convention( int *sig, const char *s, int length ) {
-  if( LP64 && !LONGS_IN_ONE_ENTRY ) {
-    printf("LP64 and 2-reg longs not supported\n");
-    return;
-  }
-  for( int i = 0; i < length; i++ )
-    sig[i] = s[i];              // Reset sig array
-
-  // The native convention is V8 if !LP64, which means the V8 convention is
-  // used both with and without LONGS_IN_ONE_ENTRY, an unfortunate split.  The
-  // same actual machine registers are used, but they are named differently in
-  // the LONGS_IN_ONE_ENTRY mode.  The LP64 convention is the V9 convention
-  // which is slightly more sane.
-  
-  if( LP64 ) {
-    // V9 convention: All things "as-if" on double-wide stack slots.
-    // Hoist any int/ptr/long's in the first 6 to int regs.
-    // Hoist any flt/dbl's in the first 16 dbl regs.
-    int j = 0;                  // Count of actual args, not HALVES
-    for( int i=0; i<length; i++, j++ ) {
-      int tmp;
-      switch( sig[i] ) {
-      case Op_RegI:
-        sig[i] = int_stk_helper( j );
-        break;
-      case Op_RegL:
-        if( sig[i+1] != 'h' ) { printf("expecting (h)alf, found %c\n", sig[i+1]); return; }
-      case Op_RegP:
-        tmp = int_stk_helper( j );
-        sig[i] = tmp | ((tmp+1) << 16); // Smear to pair
-        break;
-      case Op_RegF:                 // V9ism: floats go in ODD registers
-        sig[i] = ((j < 16) ? R_F1_num : (STACK_num + 1)) + (j<<1);
-        break;
-      case Op_RegD:                 // V9ism: doubles go in EVEN/ODD regs
-        tmp    = ((j < 16) ? R_F0_num : STACK_num) + (j<<1);
-        sig[i] = tmp | ((tmp+1) << 16); // Smear to pair
-        break;
-      case 'h': sig[i] = 0; j--; break; // Do not count HALVES
-      default:
-        printf("Bad character: %c\n", sig[i] );
-        return;
-      }
-    }
-
-  } else {
-    // V8 convention: first 6 things in O-regs, rest on stack.
-    // Alignment is willy-nilly.
-    for( int i=0; i<length; i++ ) {
-      int tmp;
-      switch( sig[i] ) {
-      case Op_RegI:
-      case Op_RegP:
-      case Op_RegF:
-        sig[i] = int_stk_helper( i );
-        break;
-      case Op_RegL:
-      case Op_RegD:
-        if( sig[i+1] != 'h' ) { printf("expecting (h)alf, found %c\n", sig[i+1]); return; }
-        tmp = int_stk_helper( i );
-        sig[i] = tmp | (int_stk_helper( i+1 ) << 16);
-        break;
-      case 'h': sig[i] = 0; break;
-      default:
-        printf("Bad character: %c\n", sig[i] );
-        return;
-      }
-    }
-  }
-
-  printf("natv ");
-  printf(LP64 ? "LP64 " : "LP32 ");
-  printf(LONGS_IN_ONE_ENTRY ? "long1: " : "long2: ");
-  print_convention(sig,s,length);
-}
-
-int main( int argc, char **argv ) {
-
-  if( argc != 2 ) {
-    printf("Usage: args IPFLhDh... (Java argument string)\n");
-    printf("Returns argument layout\n");
-    return -1;
-  }
-
-  const char *s = argv[1];
-  int length = strlen(s);
-  int sig[1000];
-
-  LP64 = false; LONGS_IN_ONE_ENTRY = false;
-  java_convention( sig, s, length );
-  LP64 = false; LONGS_IN_ONE_ENTRY = true;
-  java_convention( sig, s, length );
-  LP64 = true ; LONGS_IN_ONE_ENTRY = true;
-  java_convention( sig, s, length );
-
-  LP64 = false; LONGS_IN_ONE_ENTRY = false;
-  native_convention( sig, s, length );
-  LP64 = false; LONGS_IN_ONE_ENTRY = true;
-  native_convention( sig, s, length );
-  LP64 = true ; LONGS_IN_ONE_ENTRY = true;
-  native_convention( sig, s, length );
-}
-