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https://gitlab.com/freepascal.org/fpc/source.git
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91f567bb66
* several powerpc-related fixes * cpuasm unit is now based on common tainst unit + nppcmat unit for powerpc (almost complete)
1334 lines
50 KiB
ObjectPascal
1334 lines
50 KiB
ObjectPascal
{
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$Id$
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Copyright (c) 1998-2000 by Florian Klaempfl
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Member of the Free Pascal development team
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This unit implements the basic code generator object
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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****************************************************************************
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}
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unit cgobj;
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{$i defines.inc}
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interface
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uses
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cclasses,aasm,symtable,cpuasm,cpubase,cgbase,cpuinfo,
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symconst,symbase,symtype;
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type
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talignment = (AM_NATURAL,AM_NONE,AM_2BYTE,AM_4BYTE,AM_8BYTE);
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tcg = class
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scratch_register_array_pointer : aword;
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unusedscratchregisters : tregisterset;
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alignment : talignment;
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{************************************************}
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{ basic routines }
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constructor create;
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procedure a_label(list : taasmoutput;l : tasmlabel);virtual;
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{ allocates register r by inserting a pai_realloc record }
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procedure a_reg_alloc(list : taasmoutput;r : tregister);
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{ deallocates register r by inserting a pa_regdealloc record}
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procedure a_reg_dealloc(list : taasmoutput;r : tregister);
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{ returns a register for use as scratch register }
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function get_scratch_reg(list : taasmoutput) : tregister;
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{ releases a scratch register }
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procedure free_scratch_reg(list : taasmoutput;r : tregister);
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{************************************************}
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{ code generation for subroutine entry/exit code }
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{ initilizes data of type t }
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{ if is_already_ref is true then the routines assumes }
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{ that r points to the data to initialize }
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procedure g_initialize(list : taasmoutput;t : tdef;const ref : treference;is_already_ref : boolean);
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{ finalizes data of type t }
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{ if is_already_ref is true then the routines assumes }
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{ that r points to the data to finalizes }
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procedure g_finalize(list : taasmoutput;t : tdef;const ref : treference;is_already_ref : boolean);
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{ helper routines }
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procedure g_initialize_data(list : taasmoutput;p : tsym);
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procedure g_incr_data(list : taasmoutput;p : tsym);
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procedure g_finalize_data(list : taasmoutput;p : tnamedindexitem);
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procedure g_copyvalueparas(list : taasmoutput;p : tnamedindexitem);
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procedure g_finalizetempansistrings(list : taasmoutput);
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procedure g_entrycode(alist : TAAsmoutput;make_global:boolean;
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stackframe:longint;
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var parasize:longint;var nostackframe:boolean;
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inlined : boolean);
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procedure g_exitcode(list : taasmoutput;parasize : longint;
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nostackframe,inlined : boolean);
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{ string helper routines }
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procedure g_decrstrref(list : taasmoutput;const ref : treference;t : tdef);
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procedure g_removetemps(list : taasmoutput;p : tlinkedlist);
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{ passing parameters, per default the parameter is pushed }
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{ nr gives the number of the parameter (enumerated from }
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{ left to right), this allows to move the parameter to }
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{ register, if the cpu supports register calling }
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{ conventions }
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procedure a_param_reg(list : taasmoutput;size : tcgsize;r : tregister;nr : longint);virtual; abstract;
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procedure a_param_const(list : taasmoutput;size : tcgsize;a : aword;nr : longint);virtual;
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procedure a_param_ref(list : taasmoutput;size : tcgsize;const r : treference;nr : longint);virtual;
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procedure a_paramaddr_ref(list : taasmoutput;const r : treference;nr : longint);virtual;
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{**********************************}
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{ these methods must be overriden: }
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{ Remarks:
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* If a method specifies a size you have only to take care
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of that number of bits, i.e. load_const_reg with OP_8 must
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only load the lower 8 bit of the specified register
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the rest of the register can be undefined
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if necessary the compiler will call a method
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to zero or sign extend the register
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* The a_load_XX_XX with OP_64 needn't to be
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implemented for 32 bit
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processors, the code generator takes care of that
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* the addr size is for work with the natural pointer
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size
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* the procedures without fpu/mm are only for integer usage
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* normally the first location is the source and the
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second the destination
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}
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procedure a_call_name(list : taasmoutput;const s : string;
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offset : longint);virtual; abstract;
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{ move instructions }
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procedure a_load_const_reg(list : taasmoutput;size : tcgsize;a : aword;register : tregister);virtual; abstract;
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procedure a_load_const_ref(list : taasmoutput;size : tcgsize;a : aword;const ref : treference);virtual;
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procedure a_load_reg_ref(list : taasmoutput;size : tcgsize;register : tregister;const ref : treference);virtual; abstract;
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procedure a_load_ref_reg(list : taasmoutput;size : tcgsize;const ref : treference;register : tregister);virtual; abstract;
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procedure a_load_reg_reg(list : taasmoutput;size : tcgsize;reg1,reg2 : tregister);virtual; abstract;
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procedure a_load_loc_reg(list : taasmoutput;size : tcgsize;const loc: tlocation; reg : tregister);
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procedure a_load_loc_ref(list : taasmoutput;size : tcgsize;const loc: tlocation; const ref : treference);
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procedure a_load_sym_ofs_reg(list: taasmoutput; const sym: tasmsymbol; ofs: longint; reg: tregister);virtual; abstract;
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{ basic arithmetic operations }
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{ note: for operators which require only one argument (not, neg), use }
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{ the op_reg_reg, op_reg_reg or op_reg_loc methods and keep in mind }
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{ that in this case the *second* operand is used as both source and }
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{ destination (JM) }
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procedure a_op_const_reg(list : taasmoutput; Op: TOpCG; a: AWord; reg: TRegister); virtual; abstract;
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procedure a_op_const_ref(list : taasmoutput; Op: TOpCG; size: TCGSize; a: AWord; const ref: TReference); virtual;
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procedure a_op_const_loc(list : taasmoutput; Op: TOpCG; size: TCGSize; a: AWord; const loc: tlocation);
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procedure a_op_reg_reg(list : taasmoutput; Op: TOpCG; size: TCGSize; reg1, reg2: TRegister); virtual; abstract;
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procedure a_op_reg_ref(list : taasmoutput; Op: TOpCG; size: TCGSize; reg: TRegister; const ref: TReference); virtual;
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procedure a_op_ref_reg(list : taasmoutput; Op: TOpCG; size: TCGSize; const ref: TReference; reg: TRegister); virtual;
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procedure a_op_reg_loc(list : taasmoutput; Op: TOpCG; size: TCGSize; reg: tregister; const loc: tlocation);
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procedure a_op_ref_loc(list : taasmoutput; Op: TOpCG; size: TCGSize; const ref: TReference; const loc: tlocation);
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{ comparison operations }
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procedure a_cmp_const_reg_label(list : taasmoutput;size : tcgsize;cmp_op : topcmp;a : aword;reg : tregister;
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l : tasmlabel);virtual; abstract;
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procedure a_cmp_const_ref_label(list : taasmoutput;size : tcgsize;cmp_op : topcmp;a : aword;const ref : treference;
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l : tasmlabel); virtual;
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procedure a_cmp_const_loc_label(list: taasmoutput; size: tcgsize;cmp_op: topcmp; a: aword; const loc: tlocation;
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l : tasmlabel); virtual;
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procedure a_cmp_reg_reg_label(list : taasmoutput;size : tcgsize;cmp_op : topcmp;reg1,reg2 : tregister;l : tasmlabel); virtual; abstract;
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procedure a_cmp_ref_reg_label(list : taasmoutput;size : tcgsize;cmp_op : topcmp; const ref: treference; reg : tregister; l : tasmlabel); virtual;
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procedure a_cmp_ref_loc_label(list: taasmoutput; size: tcgsize;cmp_op: topcmp; const ref: treference; const loc: tlocation;
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l : tasmlabel);
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procedure a_jmp_cond(list : taasmoutput;cond : TOpCmp;l: tasmlabel); virtual; abstract;
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procedure g_flags2reg(list: taasmoutput; const f: tresflags; reg: TRegister); virtual; abstract;
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procedure a_loadaddress_ref_reg(list : taasmoutput;const ref : treference;r : tregister);virtual; abstract;
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procedure g_stackframe_entry(list : taasmoutput;localsize : longint);virtual; abstract;
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{ restores the frame pointer at procedure exit, for the }
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{ i386 it generates a simple leave }
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procedure g_restore_frame_pointer(list : taasmoutput);virtual; abstract;
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{ some processors like the PPC doesn't allow to change the stack in }
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{ a procedure, so we need to maintain an extra stack for the }
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{ result values of setjmp in exception code }
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{ this two procedures are for pushing an exception value, }
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{ they can use the scratch registers }
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procedure g_push_exception_value_reg(list : taasmoutput;reg : tregister);virtual; abstract;
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procedure g_push_exception_value_const(list : taasmoutput;reg : tregister);virtual; abstract;
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{ that procedure pops a exception value }
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procedure g_pop_exception_value_reg(list : taasmoutput;reg : tregister);virtual; abstract;
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procedure g_return_from_proc(list : taasmoutput;parasize : aword);virtual; abstract;
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{********************************************************}
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{ these methods can be overriden for extra functionality }
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{ the following methods do nothing: }
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procedure g_interrupt_stackframe_entry(list : taasmoutput);virtual;
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procedure g_interrupt_stackframe_exit(list : taasmoutput);virtual;
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procedure g_profilecode(list : taasmoutput);virtual;
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procedure g_stackcheck(list : taasmoutput;stackframesize : longint);virtual;
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procedure g_maybe_loadself(list : taasmoutput);virtual; abstract;
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{ copies len bytes from the source to destination, if }
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{ loadref is true, it assumes that it first must load }
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{ the source address from the memory location where }
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{ source points to }
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procedure g_concatcopy(list : taasmoutput;const source,dest : treference;len : aword;delsource,loadref : boolean);virtual; abstract;
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{$ifdef i386}
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{ this one is only necessary due the the restrictions of the 80x86, }
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{ so make it a special case (JM) }
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function makeregsize(var reg: tregister; size: tcgsize): topsize; virtual; abstract;
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{$endif i386}
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end;
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var
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cg : tcg; { this is the main code generator class }
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implementation
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uses
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strings,globals,globtype,options,{files,}gdb,systems,
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ppu,verbose,types,{tgobj,}tgcpu,symdef,symsym,cga,tainst;
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const
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max_scratch_regs = high(scratch_regs) - low(scratch_regs) + 1;
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{*****************************************************************************
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basic functionallity
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******************************************************************************}
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constructor tcg.create;
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var
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i : longint;
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begin
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scratch_register_array_pointer:=1;
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for i:=low(scratch_regs) to high(scratch_regs) do
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include(unusedscratchregisters,scratch_regs[i]);
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end;
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procedure tcg.a_reg_alloc(list : taasmoutput;r : tregister);
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begin
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list.concat(tairegalloc.alloc(r));
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end;
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procedure tcg.a_reg_dealloc(list : taasmoutput;r : tregister);
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begin
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list.concat(tairegalloc.dealloc(r));
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end;
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procedure tcg.a_label(list : taasmoutput;l : tasmlabel);
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begin
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list.concat(tai_label.create(l));
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end;
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function tcg.get_scratch_reg(list : taasmoutput) : tregister;
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var
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r : tregister;
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i : longint;
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begin
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if unusedscratchregisters=[] then
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internalerror(68996);
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for i:=scratch_register_array_pointer to
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(scratch_register_array_pointer+max_scratch_regs-1) do
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if scratch_regs[(i mod max_scratch_regs)+1] in unusedscratchregisters then
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begin
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r:=scratch_regs[(i mod max_scratch_regs)+1];
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break;
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end;
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exclude(unusedscratchregisters,r);
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inc(scratch_register_array_pointer);
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if scratch_register_array_pointer>max_scratch_regs then
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scratch_register_array_pointer:=1;
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a_reg_alloc(list,r);
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get_scratch_reg:=r;
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end;
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procedure tcg.free_scratch_reg(list : taasmoutput;r : tregister);
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begin
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{$ifdef i386}
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include(unusedscratchregisters,makereg32(r));
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{$else i386}
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include(unusedscratchregisters,r);
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{$endif i386}
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a_reg_dealloc(list,r);
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end;
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{*****************************************************************************
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this methods must be overridden for extra functionality
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******************************************************************************}
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procedure tcg.g_interrupt_stackframe_entry(list : taasmoutput);
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begin
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end;
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procedure tcg.g_interrupt_stackframe_exit(list : taasmoutput);
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begin
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end;
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procedure tcg.g_profilecode(list : taasmoutput);
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begin
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end;
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{*****************************************************************************
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for better code generation these methods should be overridden
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******************************************************************************}
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procedure tcg.a_param_const(list : taasmoutput;size : tcgsize;a : aword;nr : longint);
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var
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hr : tregister;
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begin
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hr:=get_scratch_reg(list);
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a_load_const_reg(list,size,a,hr);
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a_param_reg(list,size,hr,nr);
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free_scratch_reg(list,hr);
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end;
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procedure tcg.a_param_ref(list : taasmoutput;size : tcgsize;const r : treference;nr : longint);
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var
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hr : tregister;
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begin
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hr:=get_scratch_reg(list);
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a_load_ref_reg(list,size,r,hr);
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a_param_reg(list,size,hr,nr);
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free_scratch_reg(list,hr);
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end;
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procedure tcg.a_paramaddr_ref(list : taasmoutput;const r : treference;nr : longint);
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var
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hr : tregister;
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begin
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hr:=get_scratch_reg(list);
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a_loadaddress_ref_reg(list,r,hr);
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a_param_reg(list,OS_ADDR,hr,nr);
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free_scratch_reg(list,hr);
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end;
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procedure tcg.g_stackcheck(list : taasmoutput;stackframesize : longint);
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begin
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a_param_const(list,OS_32,stackframesize,1);
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a_call_name(list,'FPC_STACKCHECK',0);
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end;
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{*****************************************************************************
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String helper routines
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*****************************************************************************}
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procedure tcg.g_removetemps(list : taasmoutput;p : tlinkedlist);
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(*
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var
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hp : ptemptodestroy;
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pushedregs : tpushed;
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*)
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begin
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(*
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hp:=ptemptodestroy(p^.first);
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if not(assigned(hp)) then
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exit;
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tg.pushusedregisters(pushedregs,$ff);
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while assigned(hp) do
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begin
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if is_ansistring(hp^.typ) then
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begin
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g_decrstrref(list,hp^.address,hp^.typ);
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tg.ungetiftemp(hp^.address);
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end;
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hp:=ptemptodestroy(hp^.next);
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end;
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tg.popusedregisters(pushedregs);
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*)
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runerror(211);
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end;
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procedure tcg.g_decrstrref(list : taasmoutput;const ref : treference;t : tdef);
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var
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pushedregs : tpushed;
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begin
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(*
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tg.pushusedregisters(pushedregs,$ff);
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a_param_ref_addr(list,ref,1);
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if is_ansistring(t) then
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a_call_name(list,'FPC_ANSISTR_DECR_REF',0)
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else if is_widestring(t) then
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a_call_name(list,'FPC_WIDESTR_DECR_REF',0)
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else internalerror(58993);
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tg.popusedregisters(pushedregs);
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*)
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runerror(211);
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end;
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{*****************************************************************************
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Code generation for subroutine entry- and exit code
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*****************************************************************************}
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{ initilizes data of type t }
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{ if is_already_ref is true then the routines assumes }
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{ that r points to the data to initialize }
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procedure tcg.g_initialize(list : taasmoutput;t : tdef;const ref : treference;is_already_ref : boolean);
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var
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hr : treference;
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begin
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(*
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if is_ansistring(t) or
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is_widestring(t) then
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a_load_const_ref(list,OS_8,0,ref)
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else
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begin
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reset_reference(hr);
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hr.symbol:=t^.get_inittable_label;
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a_param_ref_addr(list,hr,2);
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if is_already_ref then
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a_param_ref(list,OS_ADDR,ref,1)
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else
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a_param_ref_addr(list,ref,1);
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a_call_name(list,'FPC_INITIALIZE',0);
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end;
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*)
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runerror(211);
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end;
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procedure tcg.g_finalize(list : taasmoutput;t : tdef;const ref : treference;is_already_ref : boolean);
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var
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r : treference;
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begin
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(*
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if is_ansistring(t) or
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is_widestring(t) then
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begin
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g_decrstrref(list,ref,t);
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end
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else
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begin
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reset_reference(r);
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r.symbol:=t^.get_inittable_label;
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a_param_ref_addr(list,r,2);
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if is_already_ref then
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a_paramaddr_ref(list,ref,1)
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else
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a_param_ref_addr(list,ref,1);
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a_call_name(list,'FPC_FINALIZE',0);
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end;
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*)
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runerror(211);
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end;
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{ generates the code for initialisation of local data }
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procedure tcg.g_initialize_data(list : taasmoutput;p : tsym);
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var
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hr : treference;
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begin
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(*
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if (tsym(p)^.typ=varsym) and
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assigned(pvarsym(p)^.vartype.def) and
|
|
not((pvarsym(p)^.vartype.def^.deftype=objectdef) and
|
|
pobjectdef(pvarsym(p)^.vartype.def)^.is_class) and
|
|
pvarsym(p)^.vartype.def^.needs_inittable then
|
|
begin
|
|
procinfo^.flags:=procinfo^.flags or pi_needs_implicit_finally;
|
|
reset_reference(hr);
|
|
if tsym(p)^.owner^.symtabletype=localsymtable then
|
|
begin
|
|
hr.base:=procinfo^.framepointer;
|
|
hr.offset:=-pvarsym(p)^.address;
|
|
end
|
|
else
|
|
begin
|
|
hr.symbol:=newasmsymbol(pvarsym(p)^.mangledname);
|
|
end;
|
|
g_initialize(list,pvarsym(p)^.vartype.def,hr,false);
|
|
end;
|
|
*)
|
|
runerror(211);
|
|
end;
|
|
|
|
|
|
{ generates the code for incrementing the reference count of parameters }
|
|
procedure tcg.g_incr_data(list : taasmoutput;p : tsym);
|
|
|
|
var
|
|
hr : treference;
|
|
|
|
begin
|
|
(*
|
|
if (tsym(p)^.typ=varsym) and
|
|
not((pvarsym(p)^.vartype.def^.deftype=objectdef) and
|
|
pobjectdef(pvarsym(p)^.vartype.def)^.is_class) and
|
|
pvarsym(p)^.vartype.def^.needs_inittable and
|
|
((pvarsym(p)^.varspez=vs_value)) then
|
|
begin
|
|
procinfo^.flags:=procinfo^.flags or pi_needs_implicit_finally;
|
|
reset_reference(hr);
|
|
hr.symbol:=pvarsym(p)^.vartype.def^.get_inittable_label;
|
|
a_param_ref_addr(list,hr,2);
|
|
reset_reference(hr);
|
|
hr.base:=procinfo^.framepointer;
|
|
hr.offset:=pvarsym(p)^.address+procinfo^.para_offset;
|
|
a_param_ref_addr(list,hr,1);
|
|
reset_reference(hr);
|
|
a_call_name(list,'FPC_ADDREF',0);
|
|
end;
|
|
*)
|
|
runerror(211);
|
|
end;
|
|
|
|
|
|
{ generates the code for finalisation of local data }
|
|
procedure tcg.g_finalize_data(list : taasmoutput;p : tnamedindexitem);
|
|
|
|
var
|
|
hr : treference;
|
|
|
|
begin
|
|
(*
|
|
if (tsym(p)^.typ=varsym) and
|
|
assigned(pvarsym(p)^.vartype.def) and
|
|
not((pvarsym(p)^.vartype.def^.deftype=objectdef) and
|
|
pobjectdef(pvarsym(p)^.vartype.def)^.is_class) and
|
|
pvarsym(p)^.vartype.def^.needs_inittable then
|
|
begin
|
|
{ not all kind of parameters need to be finalized }
|
|
if (tsym(p)^.owner^.symtabletype=parasymtable) and
|
|
((pvarsym(p)^.varspez=vs_var) or
|
|
(pvarsym(p)^.varspez=vs_const) { and
|
|
(dont_copy_const_param(pvarsym(p)^.definition)) } ) then
|
|
exit;
|
|
procinfo^.flags:=procinfo^.flags or pi_needs_implicit_finally;
|
|
reset_reference(hr);
|
|
case tsym(p)^.owner^.symtabletype of
|
|
localsymtable:
|
|
begin
|
|
hr.base:=procinfo^.framepointer;
|
|
hr.offset:=-pvarsym(p)^.address;
|
|
end;
|
|
parasymtable:
|
|
begin
|
|
hr.base:=procinfo^.framepointer;
|
|
hr.offset:=pvarsym(p)^.address+procinfo^.para_offset;
|
|
end;
|
|
else
|
|
hr.symbol:=newasmsymbol(pvarsym(p)^.mangledname);
|
|
end;
|
|
g_finalize(list,pvarsym(p)^.vartype.def,hr,false);
|
|
end;
|
|
*)
|
|
runerror(211);
|
|
end;
|
|
|
|
|
|
{ generates the code to make local copies of the value parameters }
|
|
procedure tcg.g_copyvalueparas(list : taasmoutput;p : tnamedindexitem);
|
|
begin
|
|
runerror(255);
|
|
end;
|
|
|
|
(*
|
|
var
|
|
_list : taasmoutput;
|
|
|
|
{ wrappers for the methods, because TP doesn't know procedures }
|
|
{ of objects }
|
|
|
|
procedure _copyvalueparas(s : tnamedindexitem);{$ifndef FPC}far;{$endif}
|
|
|
|
begin
|
|
cg^.g_copyvalueparas(_list,s);
|
|
end;
|
|
*)
|
|
|
|
procedure tcg.g_finalizetempansistrings(list : taasmoutput);
|
|
|
|
(*
|
|
var
|
|
hp : ptemprecord;
|
|
hr : treference;
|
|
*)
|
|
|
|
begin
|
|
(*
|
|
hp:=tg.templist;
|
|
while assigned(hp) do
|
|
begin
|
|
if hp^.temptype in [tt_ansistring,tt_freeansistring] then
|
|
begin
|
|
procinfo^.flags:=procinfo^.flags or pi_needs_implicit_finally;
|
|
reset_reference(hr);
|
|
hr.base:=procinfo^.framepointer;
|
|
hr.offset:=hp^.pos;
|
|
a_param_ref_addr(list,hr,1);
|
|
a_call_name(list,'FPC_ANSISTR_DECR_REF',0);
|
|
end;
|
|
hp:=hp^.next;
|
|
end;
|
|
*)
|
|
runerror(211);
|
|
end;
|
|
|
|
(*
|
|
procedure _finalize_data(s : tnamedindexitem);{$ifndef FPC}far;{$endif}
|
|
|
|
begin
|
|
cg^.g_finalize_data(_list,s);
|
|
end;
|
|
|
|
procedure _incr_data(s : tnamedindexitem);{$ifndef FPC}far;{$endif}
|
|
|
|
begin
|
|
cg^.g_incr_data(_list,tsym(s));
|
|
end;
|
|
|
|
procedure _initialize_data(s : tnamedindexitem);{$ifndef FPC}far;{$endif}
|
|
|
|
begin
|
|
cg^.g_initialize_data(_list,tsym(s));
|
|
end;
|
|
*)
|
|
|
|
{ generates the entry code for a procedure }
|
|
procedure tcg.g_entrycode(alist : TAAsmoutput;make_global:boolean;
|
|
stackframe:longint;
|
|
var parasize:longint;var nostackframe:boolean;
|
|
inlined : boolean);
|
|
|
|
|
|
(*
|
|
var
|
|
hs : string;
|
|
hp : pused_unit;
|
|
initcode : taasmoutput;
|
|
{$ifdef GDB}
|
|
stab_function_name : Pai_stab_function_name;
|
|
{$endif GDB}
|
|
hr : treference;
|
|
r : tregister;
|
|
*)
|
|
|
|
begin
|
|
(*
|
|
{ Align }
|
|
if (not inlined) then
|
|
begin
|
|
{ gprof uses 16 byte granularity !! }
|
|
if (cs_profile in aktmoduleswitches) then
|
|
list^.insert(new(pai_align,init(16)))
|
|
else
|
|
if not(cs_littlesize in aktglobalswitches) then
|
|
list^.insert(new(pai_align,init(4)));
|
|
end;
|
|
{ save registers on cdecl }
|
|
if (po_savestdregs in aktprocsym^.definition^.procoptions) then
|
|
begin
|
|
for r:=firstreg to lastreg do
|
|
begin
|
|
if (r in registers_saved_on_cdecl) then
|
|
if (r in (tg.availabletempregsint+
|
|
tg.availabletempregsfpu+
|
|
tg.availabletempregsmm)) then
|
|
begin
|
|
if not(r in tg.usedinproc) then
|
|
{!!!!!!!!!!!! a_push_reg(list,r) }
|
|
end
|
|
else
|
|
{!!!!!!!! a_push_reg(list,r) };
|
|
end;
|
|
end;
|
|
{ omit stack frame ? }
|
|
if not inlined then
|
|
if procinfo^.framepointer=stack_pointer then
|
|
begin
|
|
CGMessage(cg_d_stackframe_omited);
|
|
nostackframe:=true;
|
|
if (aktprocsym^.definition^.proctypeoption in [potype_unitinit,potype_proginit,potype_unitfinalize]) then
|
|
parasize:=0
|
|
else
|
|
parasize:=aktprocsym^.definition^.parast^.datasize+procinfo^.para_offset-pointersize;
|
|
end
|
|
else
|
|
begin
|
|
if (aktprocsym^.definition^.proctypeoption in [potype_unitinit,potype_proginit,potype_unitfinalize]) then
|
|
parasize:=0
|
|
else
|
|
parasize:=aktprocsym^.definition^.parast^.datasize+procinfo^.para_offset-pointersize*2;
|
|
nostackframe:=false;
|
|
if (po_interrupt in aktprocsym^.definition^.procoptions) then
|
|
g_interrupt_stackframe_entry(list);
|
|
|
|
g_stackframe_entry(list,stackframe);
|
|
|
|
if (cs_check_stack in aktlocalswitches) and
|
|
(tf_supports_stack_checking in target_info.flags) then
|
|
g_stackcheck(@initcode,stackframe);
|
|
end;
|
|
|
|
if cs_profile in aktmoduleswitches then
|
|
g_profilecode(@initcode);
|
|
if (not inlined) and (aktprocsym^.definition^.proctypeoption in [potype_unitinit]) then
|
|
begin
|
|
|
|
{ needs the target a console flags ? }
|
|
if tf_needs_isconsole in target_info.flags then
|
|
begin
|
|
hr.symbol:=newasmsymbol('U_'+target_info.system_unit+'_ISCONSOLE');
|
|
if apptype=at_cui then
|
|
a_load_const_ref(list,OS_8,1,hr)
|
|
else
|
|
a_load_const_ref(list,OS_8,0,hr);
|
|
dispose(hr.symbol,done);
|
|
end;
|
|
|
|
hp:=pused_unit(usedunits.first);
|
|
while assigned(hp) do
|
|
begin
|
|
{ call the unit init code and make it external }
|
|
if (hp^.u^.flags and uf_init)<>0 then
|
|
a_call_name(list,
|
|
'INIT$$'+hp^.u^.modulename^,0);
|
|
hp:=Pused_unit(hp^.next);
|
|
end;
|
|
end;
|
|
|
|
{$ifdef dummy}
|
|
{ a constructor needs a help procedure }
|
|
if (aktprocsym^.definition^.options and poconstructor)<>0 then
|
|
begin
|
|
if procinfo^._class^.isclass then
|
|
begin
|
|
list^.concat(new(paicpu,op_sym(A_CALL,S_NO,newasmsymbol('FPC_NEW_CLASS'))));
|
|
list^.concat(new(paicpu,op_cond_sym(A_Jcc,C_Z,S_NO,quickexitlabel)));
|
|
end
|
|
else
|
|
begin
|
|
{
|
|
list^.insert(new(pai_labeled,init(A_JZ,quickexitlabel)));
|
|
list^.insert(new(paicpu,op_csymbol(A_CALL,S_NO,
|
|
newcsymbol('FPC_HELP_CONSTRUCTOR',0))));
|
|
list^.insert(new(paicpu,op_const_reg(A_MOV,S_L,procinfo^._class^.vmt_offset,R_EDI)));
|
|
concat_external('FPC_HELP_CONSTRUCTOR',EXT_NEAR);
|
|
}
|
|
end;
|
|
end;
|
|
{$endif dummy}
|
|
{$ifdef GDB}
|
|
if (cs_debuginfo in aktmoduleswitches) then
|
|
list^.insert(new(pai_force_line,init));
|
|
{$endif GDB}
|
|
|
|
{ initialize return value }
|
|
if assigned(procinfo^.returntype.def) and
|
|
is_ansistring(procinfo^.returntype.def) or
|
|
is_widestring(procinfo^.returntype.def) then
|
|
begin
|
|
reset_reference(hr);
|
|
hr.offset:=procinfo^.return_offset;
|
|
hr.base:=procinfo^.framepointer;
|
|
a_load_const_ref(list,OS_32,0,hr);
|
|
end;
|
|
|
|
_list:=list;
|
|
{ generate copies of call by value parameters }
|
|
if (po_assembler in aktprocsym^.definition^.procoptions) then
|
|
aktprocsym^.definition^.parast^.foreach({$ifdef FPCPROCVAR}@{$endif}_copyvalueparas);
|
|
|
|
{ initialisizes local data }
|
|
aktprocsym^.definition^.localst^.foreach({$ifdef FPCPROCVAR}@{$endif}_initialize_data);
|
|
{ add a reference to all call by value/const parameters }
|
|
aktprocsym^.definition^.parast^.foreach({$ifdef FPCPROCVAR}@{$endif}_incr_data);
|
|
|
|
if (cs_profile in aktmoduleswitches) or
|
|
(aktprocsym^.definition^.owner^.symtabletype=globalsymtable) or
|
|
(assigned(procinfo^._class) and (procinfo^._class^.owner^.symtabletype=globalsymtable)) then
|
|
make_global:=true;
|
|
if not inlined then
|
|
begin
|
|
hs:=proc_names.get;
|
|
|
|
{$ifdef GDB}
|
|
if (cs_debuginfo in aktmoduleswitches) and target_os.use_function_relative_addresses then
|
|
stab_function_name := new(pai_stab_function_name,init(strpnew(hs)));
|
|
{$endif GDB}
|
|
|
|
{ insert the names for the procedure }
|
|
while hs<>'' do
|
|
begin
|
|
if make_global then
|
|
exprasmlist^.insert(new(pai_symbol,initname_global(hs,0)))
|
|
else
|
|
exprasmlist^.insert(new(pai_symbol,initname(hs,0)));
|
|
|
|
{$ifdef GDB}
|
|
if (cs_debuginfo in aktmoduleswitches) then
|
|
begin
|
|
if target_os.use_function_relative_addresses then
|
|
list^.insert(new(pai_stab_function_name,init(strpnew(hs))));
|
|
end;
|
|
{$endif GDB}
|
|
|
|
hs:=proc_names.get;
|
|
end;
|
|
end;
|
|
|
|
{$ifdef GDB}
|
|
if (not inlined) and (cs_debuginfo in aktmoduleswitches) then
|
|
begin
|
|
if target_os.use_function_relative_addresses then
|
|
list^.insert(stab_function_name);
|
|
if make_global or ((procinfo^.flags and pi_is_global) <> 0) then
|
|
aktprocsym^.is_global := True;
|
|
list^.insert(new(pai_stabs,init(aktprocsym^.stabstring)));
|
|
aktprocsym^.isstabwritten:=true;
|
|
end;
|
|
{$endif GDB}
|
|
*)
|
|
runerror(211);
|
|
end;
|
|
|
|
procedure tcg.g_exitcode(list : taasmoutput;parasize:longint;nostackframe,inlined:boolean);
|
|
|
|
var
|
|
{$ifdef GDB}
|
|
mangled_length : longint;
|
|
p : pchar;
|
|
{$endif GDB}
|
|
nofinal,noreraiselabel : tasmlabel;
|
|
hr : treference;
|
|
r : tregister;
|
|
|
|
begin
|
|
(*
|
|
if aktexitlabel^.is_used then
|
|
list^.insert(new(pai_label,init(aktexitlabel)));
|
|
|
|
{ call the destructor help procedure }
|
|
if (aktprocsym^.definition^.proctypeoption=potype_destructor) then
|
|
begin
|
|
if procinfo^._class^.is_class then
|
|
a_call_name(list,'FPC_DISPOSE_CLASS',0)
|
|
else
|
|
begin
|
|
if procinfo^._class^.needs_inittable then
|
|
begin
|
|
getlabel(nofinal);
|
|
{!!!!!!!!!!
|
|
reset_reference(hr);
|
|
hr.base:=R_EBP;
|
|
hr.offset:=8;
|
|
a_cmp_reg_const_label(list,OS_ADDR,OZ_EQ,
|
|
}
|
|
reset_reference(hr);
|
|
hr.symbol:=procinfo^._class^.get_inittable_label;
|
|
a_paramaddr_ref(list,hr,2);
|
|
a_param_reg(list,OS_ADDR,self_pointer,1);
|
|
a_call_name(list,'FPC_FINALIZE',0);
|
|
a_label(list,nofinal);
|
|
end;
|
|
{ vmt_offset_reg can be a scratch register, }
|
|
{ but it must be always the same }
|
|
a_reg_alloc(list,vmt_offset_reg);
|
|
a_load_const_reg(list,OS_32,procinfo^._class^.vmt_offset,vmt_offset_reg);
|
|
a_call_name(list,'FPC_HELP_DESTRUCTOR',0);
|
|
a_reg_dealloc(list,vmt_offset_reg);
|
|
end;
|
|
end;
|
|
|
|
{ finalize temporary data }
|
|
g_finalizetempansistrings(list);
|
|
|
|
_list:=list;
|
|
|
|
{ finalize local data }
|
|
aktprocsym^.definition^.localst^.foreach({$ifdef FPCPROCVAR}@{$endif}_finalize_data);
|
|
|
|
{ finalize paras data }
|
|
if assigned(aktprocsym^.definition^.parast) then
|
|
aktprocsym^.definition^.parast^.foreach({$ifdef FPCPROCVAR}@{$endif}_finalize_data);
|
|
|
|
{ do we need to handle exceptions because of ansi/widestrings ? }
|
|
if (procinfo^.flags and pi_needs_implicit_finally)<>0 then
|
|
begin
|
|
getlabel(noreraiselabel);
|
|
|
|
a_call_name(list,'FPC_POPADDRSTACK',0);
|
|
a_reg_alloc(list,accumulator);
|
|
g_pop_exception_value_reg(list,accumulator);
|
|
a_cmp_const_reg_label(list,OS_32,OC_EQ,0,accumulator,noreraiselabel);
|
|
a_reg_dealloc(list,accumulator);
|
|
|
|
{ must be the return value finalized before reraising the exception? }
|
|
if (procinfo^.returntype.def<>tdef(voiddef)) and
|
|
(procinfo^.returntype.def^.needs_inittable) and
|
|
((procinfo^.returntype.def^.deftype<>objectdef) or
|
|
not(pobjectdef(procinfo^.returntype.def)^.is_class)) then
|
|
begin
|
|
reset_reference(hr);
|
|
hr.offset:=procinfo^.return_offset;
|
|
hr.base:=procinfo^.framepointer;
|
|
g_finalize(list,procinfo^.returntype.def,hr,ret_in_param(procinfo^.returntype.def));
|
|
end;
|
|
|
|
a_call_name(list,'FPC_RERAISE',0);
|
|
a_label(list,noreraiselabel);
|
|
end;
|
|
|
|
{ call __EXIT for main program }
|
|
if (not DLLsource) and (not inlined) and (aktprocsym^.definition^.proctypeoption=potype_proginit) then
|
|
a_call_name(list,'FPC_DO_EXIT',0);
|
|
|
|
{ handle return value }
|
|
if not(po_assembler in aktprocsym^.definition^.procoptions) then
|
|
if (aktprocsym^.definition^.proctypeoption<>potype_constructor) then
|
|
{ handle_return_value(inlined) }
|
|
else
|
|
begin
|
|
{ return self in EAX }
|
|
a_label(list,quickexitlabel);
|
|
a_reg_alloc(list,accumulator);
|
|
a_load_reg_reg(list,OS_ADDR,self_pointer,accumulator);
|
|
a_reg_dealloc(list,self_pointer);
|
|
a_label(list,quickexitlabel);
|
|
{ we can't clear the zero flag because the Alpha }
|
|
{ for example doesn't have flags, we have to compare }
|
|
{ the accu. in the caller }
|
|
end;
|
|
|
|
{ stabs uses the label also ! }
|
|
if aktexit2label^.is_used or
|
|
((cs_debuginfo in aktmoduleswitches) and not inlined) then
|
|
a_label(list,aktexit2label);
|
|
|
|
{$ifdef dummy}
|
|
{ should we restore edi ? }
|
|
{ for all i386 gcc implementations }
|
|
{!!!!!!!!!!! I don't know how to handle register saving yet }
|
|
if (po_savestdregs in aktprocsym^.definition^.procoptions) then
|
|
begin
|
|
if (aktprocsym^.definition^.usedregisters and ($80 shr byte(R_EBX)))<>0 then
|
|
exprasmlist^.concat(new(paicpu,op_reg(A_POP,S_L,R_EBX)));
|
|
exprasmlist^.concat(new(paicpu,op_reg(A_POP,S_L,R_ESI)));
|
|
exprasmlist^.concat(new(paicpu,op_reg(A_POP,S_L,R_EDI)));
|
|
{ here we could reset R_EBX
|
|
but that is risky because it only works
|
|
if genexitcode is called after genentrycode
|
|
so lets skip this for the moment PM
|
|
aktprocsym^.definition^.usedregisters:=
|
|
aktprocsym^.definition^.usedregisters or not ($80 shr byte(R_EBX));
|
|
}
|
|
end;
|
|
{$endif dummy}
|
|
if not(nostackframe) and not inlined then
|
|
g_restore_frame_pointer(list);
|
|
{ at last, the return is generated }
|
|
|
|
if not inlined then
|
|
if po_interrupt in aktprocsym^.definition^.procoptions then
|
|
g_interrupt_stackframe_exit(list)
|
|
else
|
|
g_return_from_proc(list,parasize);
|
|
list^.concat(new(pai_symbol_end,initname(aktprocsym^.definition^.mangledname)));
|
|
|
|
{$ifdef GDB}
|
|
if (cs_debuginfo in aktmoduleswitches) and not inlined then
|
|
begin
|
|
aktprocsym^.concatstabto(list);
|
|
if assigned(procinfo^._class) then
|
|
if (not assigned(procinfo^.parent) or
|
|
not assigned(procinfo^.parent^._class)) then
|
|
list^.concat(new(pai_stabs,init(strpnew(
|
|
'"$t:v'+procinfo^._class^.numberstring+'",'+
|
|
tostr(N_PSYM)+',0,0,'+tostr(procinfo^.selfpointer_offset)))));
|
|
{!!!!!!!!!!!!
|
|
else
|
|
list^.concat(new(pai_stabs,init(strpnew(
|
|
'"$t:r'+procinfo^._class^.numberstring+'",'+
|
|
tostr(N_RSYM)+',0,0,'+tostr(GDB_i386index[R_ESI])))));
|
|
}
|
|
if (tdef(aktprocsym^.definition^.rettype.def) <> tdef(voiddef)) then
|
|
begin
|
|
if ret_in_param(aktprocsym^.definition^.rettype.def) then
|
|
list^.concat(new(pai_stabs,init(strpnew(
|
|
'"'+aktprocsym^.name+':X*'+aktprocsym^.definition^.rettype.def^.numberstring+'",'+
|
|
tostr(N_PSYM)+',0,0,'+tostr(procinfo^.return_offset)))))
|
|
else
|
|
list^.concat(new(pai_stabs,init(strpnew(
|
|
'"'+aktprocsym^.name+':X'+aktprocsym^.definition^.rettype.def^.numberstring+'",'+
|
|
tostr(N_PSYM)+',0,0,'+tostr(procinfo^.return_offset)))));
|
|
if (m_result in aktmodeswitches) then
|
|
if ret_in_param(aktprocsym^.definition^.rettype.def) then
|
|
list^.concat(new(pai_stabs,init(strpnew(
|
|
'"RESULT:X*'+aktprocsym^.definition^.rettype.def^.numberstring+'",'+
|
|
tostr(N_PSYM)+',0,0,'+tostr(procinfo^.return_offset)))))
|
|
else
|
|
list^.concat(new(pai_stabs,init(strpnew(
|
|
'"RESULT:X'+aktprocsym^.definition^.rettype.def^.numberstring+'",'+
|
|
tostr(N_PSYM)+',0,0,'+tostr(procinfo^.return_offset)))));
|
|
end;
|
|
mangled_length:=length(aktprocsym^.definition^.mangledname);
|
|
getmem(p,mangled_length+50);
|
|
strpcopy(p,'192,0,0,');
|
|
strpcopy(strend(p),aktprocsym^.definition^.mangledname);
|
|
list^.concat(new(pai_stabn,init(strnew(p))));
|
|
{list^.concat(new(pai_stabn,init(strpnew('192,0,0,'
|
|
+aktprocsym^.definition^.mangledname))));
|
|
p[0]:='2';p[1]:='2';p[2]:='4';
|
|
strpcopy(strend(p),'_end');}
|
|
freemem(p,mangled_length+50);
|
|
list^.concat(new(pai_stabn,init(
|
|
strpnew('224,0,0,'+aktexit2label^.name))));
|
|
{ strpnew('224,0,0,'
|
|
+aktprocsym^.definition^.mangledname+'_end'))));}
|
|
end;
|
|
{$endif GDB}
|
|
*)
|
|
runerror(211);
|
|
end;
|
|
|
|
{*****************************************************************************
|
|
some generic implementations
|
|
****************************************************************************}
|
|
|
|
|
|
procedure tcg.a_load_const_ref(list : taasmoutput;size : tcgsize;a : aword;const ref : treference);
|
|
|
|
var
|
|
tmpreg: tregister;
|
|
|
|
begin
|
|
tmpreg := get_scratch_reg(list);
|
|
a_load_const_reg(list,size,a,tmpreg);
|
|
a_load_reg_ref(list,size,tmpreg,ref);
|
|
free_scratch_reg(list,tmpreg);
|
|
end;
|
|
|
|
procedure tcg.a_load_loc_reg(list : taasmoutput;size : tcgsize;const loc: tlocation; reg : tregister);
|
|
|
|
begin
|
|
case loc.loc of
|
|
LOC_REFERENCE,LOC_MEM:
|
|
a_load_ref_reg(list,size,loc.reference,reg);
|
|
LOC_REGISTER,LOC_CREGISTER:
|
|
a_load_reg_reg(list,size,loc.register,reg);
|
|
else
|
|
internalerror(200109092);
|
|
end;
|
|
end;
|
|
|
|
procedure tcg.a_load_loc_ref(list : taasmoutput;size : tcgsize;const loc: tlocation; const ref : treference);
|
|
|
|
var
|
|
tmpreg: tregister;
|
|
|
|
begin
|
|
case loc.loc of
|
|
LOC_REFERENCE,LOC_MEM:
|
|
begin
|
|
{$ifdef i386}
|
|
case size of
|
|
OS_8,OS_S8:
|
|
tmpreg := reg32toreg8(getregister32);
|
|
OS_16,OS_S16:
|
|
tmpreg := reg32toreg16(get_scratch_reg(list));
|
|
else
|
|
tmpreg := get_scratch_reg(list);
|
|
end;
|
|
{$else i386}
|
|
tmpreg := get_scratch_reg(list);
|
|
{$endif i386}
|
|
a_load_ref_reg(list,size,loc.reference,tmpreg);
|
|
a_load_reg_ref(list,size,tmpreg,ref);
|
|
{$ifdef i386}
|
|
if not (size in [OS_32,OS_S32]) then
|
|
ungetregister(tmpreg)
|
|
else
|
|
{$endif i386}
|
|
free_scratch_reg(list,tmpreg);
|
|
end;
|
|
LOC_REGISTER,LOC_CREGISTER:
|
|
a_load_reg_ref(list,size,loc.register,ref);
|
|
else
|
|
internalerror(200109302);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tcg.a_op_const_ref(list : taasmoutput; Op: TOpCG; size: TCGSize; a: AWord; const ref: TReference);
|
|
|
|
var
|
|
tmpreg: tregister;
|
|
|
|
begin
|
|
tmpreg := get_scratch_reg(list);
|
|
a_load_ref_reg(list,size,ref,tmpreg);
|
|
a_op_const_reg(list,op,a,tmpreg);
|
|
a_load_reg_ref(list,size,tmpreg,ref);
|
|
free_scratch_reg(list,tmpreg);
|
|
end;
|
|
|
|
|
|
procedure tcg.a_op_const_loc(list : taasmoutput; Op: TOpCG; size: TCGSize; a: AWord; const loc: tlocation);
|
|
|
|
begin
|
|
case loc.loc of
|
|
LOC_REGISTER, LOC_CREGISTER:
|
|
a_op_const_reg(list,op,a,loc.register);
|
|
LOC_REFERENCE, LOC_MEM:
|
|
a_op_const_ref(list,op,size,a,loc.reference);
|
|
else
|
|
internalerror(200109061);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tcg.a_op_reg_ref(list : taasmoutput; Op: TOpCG; size: TCGSize;reg: TRegister; const ref: TReference);
|
|
|
|
var
|
|
tmpreg: tregister;
|
|
|
|
begin
|
|
tmpreg := get_scratch_reg(list);
|
|
a_load_ref_reg(list,size,ref,tmpreg);
|
|
a_op_reg_reg(list,op,size,reg,tmpreg);
|
|
a_load_reg_ref(list,size,tmpreg,ref);
|
|
free_scratch_reg(list,tmpreg);
|
|
end;
|
|
|
|
|
|
procedure tcg.a_op_ref_reg(list : taasmoutput; Op: TOpCG; size: TCGSize; const ref: TReference; reg: TRegister);
|
|
|
|
var
|
|
tmpreg: tregister;
|
|
|
|
begin
|
|
case op of
|
|
OP_NOT,OP_NEG:
|
|
{ handle it as "load ref,reg; op reg" }
|
|
begin
|
|
a_load_ref_reg(list,size,ref,reg);
|
|
a_op_reg_reg(list,op,size,reg,reg);
|
|
end;
|
|
else
|
|
begin
|
|
tmpreg := get_scratch_reg(list);
|
|
a_load_ref_reg(list,size,ref,tmpreg);
|
|
a_op_reg_reg(list,op,size,tmpreg,reg);
|
|
free_scratch_reg(list,tmpreg);
|
|
end;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tcg.a_op_reg_loc(list : taasmoutput; Op: TOpCG; size: TCGSize; reg: tregister; const loc: tlocation);
|
|
|
|
begin
|
|
case loc.loc of
|
|
LOC_REGISTER, LOC_CREGISTER:
|
|
a_op_reg_reg(list,op,size,reg,loc.register);
|
|
LOC_REFERENCE, LOC_MEM:
|
|
a_op_reg_ref(list,op,size,reg,loc.reference);
|
|
else
|
|
internalerror(200109061);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tcg.a_op_ref_loc(list : taasmoutput; Op: TOpCG; size: TCGSize; const ref: TReference; const loc: tlocation);
|
|
|
|
var
|
|
tmpreg: tregister;
|
|
|
|
begin
|
|
case loc.loc of
|
|
LOC_REGISTER,LOC_CREGISTER:
|
|
a_op_ref_reg(list,op,size,ref,loc.register);
|
|
LOC_REFERENCE,LOC_MEM:
|
|
begin
|
|
tmpreg := get_scratch_reg(list);
|
|
{$ifdef i386}
|
|
makeregsize(tmpreg,size);
|
|
{$endif i386}
|
|
a_load_ref_reg(list,size,ref,tmpreg);
|
|
a_op_reg_ref(list,op,size,tmpreg,loc.reference);
|
|
free_scratch_reg(list,tmpreg);
|
|
end;
|
|
else
|
|
internalerror(200109061);
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure tcg.a_cmp_const_ref_label(list : taasmoutput;size : tcgsize;cmp_op : topcmp;a : aword;const ref : treference;
|
|
l : tasmlabel);
|
|
|
|
var
|
|
tmpreg: tregister;
|
|
|
|
begin
|
|
tmpreg := get_scratch_reg(list);
|
|
a_load_ref_reg(list,size,ref,tmpreg);
|
|
a_cmp_const_reg_label(list,size,cmp_op,a,tmpreg,l);
|
|
free_scratch_reg(list,tmpreg);
|
|
end;
|
|
|
|
procedure tcg.a_cmp_const_loc_label(list : taasmoutput;size : tcgsize;cmp_op : topcmp;a : aword;const loc : tlocation;
|
|
l : tasmlabel);
|
|
|
|
begin
|
|
case loc.loc of
|
|
LOC_REGISTER,LOC_CREGISTER:
|
|
a_cmp_const_reg_label(list,size,cmp_op,a,loc.register,l);
|
|
LOC_REFERENCE,LOC_MEM:
|
|
a_cmp_const_ref_label(list,size,cmp_op,a,loc.reference,l);
|
|
else
|
|
internalerror(200109061);
|
|
end;
|
|
end;
|
|
|
|
procedure tcg.a_cmp_ref_reg_label(list : taasmoutput;size : tcgsize;cmp_op : topcmp; const ref: treference; reg : tregister; l : tasmlabel);
|
|
|
|
var
|
|
tmpreg: tregister;
|
|
|
|
begin
|
|
tmpreg := get_scratch_reg(list);
|
|
a_load_ref_reg(list,size,ref,tmpreg);
|
|
a_cmp_reg_reg_label(list,size,cmp_op,tmpreg,reg,l);
|
|
free_scratch_reg(list,tmpreg);
|
|
end;
|
|
|
|
procedure tcg.a_cmp_ref_loc_label(list : taasmoutput;size : tcgsize;cmp_op : topcmp;const ref: treference;const loc : tlocation;
|
|
l : tasmlabel);
|
|
|
|
var
|
|
tmpreg: tregister;
|
|
|
|
begin
|
|
case loc.loc of
|
|
LOC_REGISTER,LOC_CREGISTER:
|
|
a_cmp_ref_reg_label(list,size,cmp_op,ref,loc.register,l);
|
|
LOC_REFERENCE,LOC_MEM:
|
|
begin
|
|
{$ifdef i386}
|
|
{ the following is done with defines to avoid a speed penalty, }
|
|
{ since all this is only necessary for the 80x86 (because EDI }
|
|
{ doesn't have an 8bit component which is directly addressable) }
|
|
if size in [OS_8,OS_S8] then
|
|
tmpreg := getregister32
|
|
else
|
|
{$endif i386}
|
|
tmpreg := get_scratch_reg(list);
|
|
{$ifdef i386}
|
|
makeregsize(tmpreg,size);
|
|
{$endif i386}
|
|
a_load_ref_reg(list,size,loc.reference,tmpreg);
|
|
a_cmp_ref_reg_label(list,size,cmp_op,ref,tmpreg,l);
|
|
{$ifdef i386}
|
|
if makereg32(tmpreg) <> R_EDI then
|
|
ungetregister(tmpreg)
|
|
else
|
|
{$endif i386}
|
|
free_scratch_reg(list,tmpreg);
|
|
end
|
|
else
|
|
internalerror(200109061);
|
|
end;
|
|
end;
|
|
|
|
finalization
|
|
cg.free;
|
|
end.
|
|
{
|
|
$Log$
|
|
Revision 1.5 2001-12-29 15:28:58 jonas
|
|
* powerpc/cgcpu.pas compiles :)
|
|
* several powerpc-related fixes
|
|
* cpuasm unit is now based on common tainst unit
|
|
+ nppcmat unit for powerpc (almost complete)
|
|
|
|
Revision 1.4 2001/09/30 21:26:42 peter
|
|
* removed obsolete newst defines
|
|
|
|
Revision 1.3 2001/09/30 16:17:17 jonas
|
|
* made most constant and mem handling processor independent
|
|
|
|
Revision 1.2 2001/09/28 20:39:32 jonas
|
|
* changed all flow control structures (except for exception handling
|
|
related things) to processor independent code (in new ncgflw unit)
|
|
+ generic cgobj unit which contains lots of code generator helpers with
|
|
global "cg" class instance variable
|
|
+ cgcpu unit for i386 (implements processor specific routines of the above
|
|
unit)
|
|
* updated cgbase and cpubase for the new code generator units
|
|
* include ncgflw unit in cpunode unit
|
|
|
|
Revision 1.5 2001/09/09 17:10:26 jonas
|
|
* some more things implemented
|
|
|
|
Revision 1.4 2001/09/06 15:25:55 jonas
|
|
* changed type of tcg from object to class -> abstract methods are now
|
|
a lot cleaner :)
|
|
+ more updates: load_*_loc methods, op_*_* methods, g_flags2reg method
|
|
(if possible with geenric implementation and necessary ppc
|
|
implementations)
|
|
* worked a bit further on cgflw, now working on exitnode
|
|
|
|
Revision 1.3 2001/09/05 20:21:03 jonas
|
|
* new cgflow based on n386flw with all nodes until forn "translated"
|
|
+ a_cmp_loc_*_label methods for tcg
|
|
+ base implementatino for a_cmp_ref_*_label methods
|
|
* small bugfixes to powerpc cg
|
|
|
|
Revision 1.2 2001/08/26 13:37:04 florian
|
|
* some cg reorganisation
|
|
* some PPC updates
|
|
|
|
Revision 1.1 2000/07/13 06:30:07 michael
|
|
+ Initial import
|
|
|
|
}
|