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src/hotspot/cpu/aarch64/sharedRuntime_aarch64.cpp

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rev 51081 : 8207838: aarch64: fix the order in which float registers are restored in restore_args
Summary: fix the order in which float registers are restored in restore_args for aarch64
Reviewed-by: aph
Contributed-by: guoge1@huawei.com


1090   for ( int i = first_arg ; i < arg_count ; i++ ) {
1091     if (args[i].first()->is_Register()) {
1092       x = x + args[i].first()->as_Register();
1093     } else if (args[i].first()->is_FloatRegister()) {
1094       __ strd(args[i].first()->as_FloatRegister(), Address(__ pre(sp, -2 * wordSize)));
1095     }
1096   }
1097   __ push(x, sp);
1098 }
1099 
1100 static void restore_args(MacroAssembler *masm, int arg_count, int first_arg, VMRegPair *args) {
1101   RegSet x;
1102   for ( int i = first_arg ; i < arg_count ; i++ ) {
1103     if (args[i].first()->is_Register()) {
1104       x = x + args[i].first()->as_Register();
1105     } else {
1106       ;
1107     }
1108   }
1109   __ pop(x, sp);
1110   for ( int i = first_arg ; i < arg_count ; i++ ) {
1111     if (args[i].first()->is_Register()) {
1112       ;
1113     } else if (args[i].first()->is_FloatRegister()) {
1114       __ ldrd(args[i].first()->as_FloatRegister(), Address(__ post(sp, 2 * wordSize)));
1115     }
1116   }
1117 }
1118 
1119 
1120 // Check GCLocker::needs_gc and enter the runtime if it's true.  This
1121 // keeps a new JNI critical region from starting until a GC has been
1122 // forced.  Save down any oops in registers and describe them in an
1123 // OopMap.
1124 static void check_needs_gc_for_critical_native(MacroAssembler* masm,
1125                                                int stack_slots,
1126                                                int total_c_args,
1127                                                int total_in_args,
1128                                                int arg_save_area,
1129                                                OopMapSet* oop_maps,
1130                                                VMRegPair* in_regs,




1090   for ( int i = first_arg ; i < arg_count ; i++ ) {
1091     if (args[i].first()->is_Register()) {
1092       x = x + args[i].first()->as_Register();
1093     } else if (args[i].first()->is_FloatRegister()) {
1094       __ strd(args[i].first()->as_FloatRegister(), Address(__ pre(sp, -2 * wordSize)));
1095     }
1096   }
1097   __ push(x, sp);
1098 }
1099 
1100 static void restore_args(MacroAssembler *masm, int arg_count, int first_arg, VMRegPair *args) {
1101   RegSet x;
1102   for ( int i = first_arg ; i < arg_count ; i++ ) {
1103     if (args[i].first()->is_Register()) {
1104       x = x + args[i].first()->as_Register();
1105     } else {
1106       ;
1107     }
1108   }
1109   __ pop(x, sp);
1110   for ( int i = arg_count - 1 ; i >= first_arg ; i-- ) {
1111     if (args[i].first()->is_Register()) {
1112       ;
1113     } else if (args[i].first()->is_FloatRegister()) {
1114       __ ldrd(args[i].first()->as_FloatRegister(), Address(__ post(sp, 2 * wordSize)));
1115     }
1116   }
1117 }
1118 
1119 
1120 // Check GCLocker::needs_gc and enter the runtime if it's true.  This
1121 // keeps a new JNI critical region from starting until a GC has been
1122 // forced.  Save down any oops in registers and describe them in an
1123 // OopMap.
1124 static void check_needs_gc_for_critical_native(MacroAssembler* masm,
1125                                                int stack_slots,
1126                                                int total_c_args,
1127                                                int total_in_args,
1128                                                int arg_save_area,
1129                                                OopMapSet* oop_maps,
1130                                                VMRegPair* in_regs,
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