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@@ -1,1396 +0,0 @@
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-{
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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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-
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- This unit implements the basic code generator object
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-
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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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-
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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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-
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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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-}
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-unit cgobj;
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-
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- interface
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-
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- uses
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- cobjects,aasm,symtable,cpuasm,cpubase,cgbase,cpuinfo,tainst
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- symconst;
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-
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- type
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- talignment = (AM_NATURAL,AM_NONE,AM_2BYTE,AM_4BYTE,AM_8BYTE);
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-
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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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-
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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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-
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- procedure a_label(list : taasmoutput;l : pasmlabel);virtual;
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-
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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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-
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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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- {************************************************}
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- { code generation for subroutine entry/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 g_initialize(list : taasmoutput;t : pdef;const ref : treference;is_already_ref : boolean);
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-
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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 : pdef;const ref : treference;is_already_ref : boolean);
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-
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- { helper routines }
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- procedure g_initialize_data(list : taasmoutput;p : psym);
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- procedure g_incr_data(list : taasmoutput;p : psym);
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- procedure g_finalize_data(list : taasmoutput;p : pnamedindexobject);
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- procedure g_copyvalueparas(list : taasmoutput;p : pnamedindexobject);
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- procedure g_finalizetempansistrings(list : taasmoutput);
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-
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- procedure g_entrycode(list : taasmoutput;
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- const proc_names : tstringcontainer;make_global : boolean;
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- stackframe : longint;var parasize : longint;
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- var nostackframe : boolean;inlined : boolean);
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-
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- procedure g_exitcode(list : taasmoutput;parasize : longint;
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- nostackframe,inlined : boolean);
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-
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- { string helper routines }
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- procedure g_decrstrref(list : taasmoutput;const ref : treference;t : pdef);
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-
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- procedure g_removetemps(list : taasmoutput;p : plinkedlist);
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-
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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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- {**********************************}
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- { these methods must be overriden: }
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-
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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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-
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- procedure a_call_name(list : taasmoutput;const s : string;
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- offset : longint);virtual;
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-
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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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-
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-
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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; size: TCGSize; 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: tloocation);
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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; const ref: TReference; const loc: tloocation);
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- procedure a_op_ref_loc(list : taasmoutput; Op: TOpCG; size: TCGSize; const ref: TReference; const loc: tloocation); virtual;
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-
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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 : pasmlabel);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 : pasmlabel); virtual;
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- procedure a_cmp_const_loc_label(list: taasmoutput; size: tcgsiwe;cmp_op: topcmp; a: aword; const loc: tlocation;
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- l : pasmlabel); virtual;
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- procedure a_cmp_reg_reg_label(list : taasmoutput;size : tcgsize;cmp_op : topcmp;reg1,reg2 : tregister;l : pasmlabel); virtual; abstract;
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- procedure a_cmp_reg_ref_label(list : taasmoutput;size : tcgsize;cmp_op : topcmp;reg : tregister; const ref: treference; l : pasmlabel); virtual;
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- procedure a_cmp_ref_loc_label(list: taasmoutput; size: tcgsiwe;cmp_op: topcmp; const ref: treference; const loc: tlocation;
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- l : pasmlabel); virtual;
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-
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- procedure a_jmp_cond(list : taasmoutput;cond : TOpCmp;l: pasmlabel); abstract;
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-
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- procedure g_flags2reg(list: taasmoutput; const f: TAsmCond; reg: TRegister); abstract;
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-
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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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-
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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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-
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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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-
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- procedure g_profilecode(list : taasmoutput);virtual; abstract;
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- procedure g_stackcheck(list : taasmoutput;stackframesize : longint);virtual; abstract;
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-
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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;loadref : boolean);virtual; abstract;
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-
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- { uses the addr of ref as param, was emitpushreferenceaddr }
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- procedure a_param_ref_addr(list : taasmoutput;r : treference;nr : longint);virtual; abstract;
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- end;
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-
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- var
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- cg : pcg; { this is the main code generator class }
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-
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- implementation
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-
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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
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- {$IFDEF NEWST}
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- ,symbols,defs,symtablt
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- {$ENDIF NEWST};
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-
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-{*****************************************************************************
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- basic functionallity
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-******************************************************************************}
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-
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- constructor tcg.create;
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-
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- var
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- i : longint;
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-
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- begin
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- scratch_register_array_pointer:=1;
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- for i:=1 to max_scratch_regs do
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- include(unusedscratchregisters,scratch_regs[i]);
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- end;
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-
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- procedure tcg.a_reg_alloc(list : taasmoutput;r : tregister);
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-
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- begin
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- list^.concat(new(pairegalloc,alloc(r)));
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- end;
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-
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- procedure tcg.a_reg_dealloc(list : taasmoutput;r : tregister);
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-
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- begin
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- list^.concat(new(pairegalloc,dealloc(r)));
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- end;
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-
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- procedure tcg.a_label(list : taasmoutput;l : pasmlabel);
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-
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- begin
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- list^.concat(new(pai_label,init(l)));
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- end;
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-
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- function tcg.get_scratch_reg(list : taasmoutput) : tregister;
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-
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- var
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- r : tregister;
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- i : longint;
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-
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- begin
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- if unusedscratchregisters=[] then
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- internalerror(68996);
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-
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- for i:=scratch_register_array_pointer to
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- (scratch_register_array_pointer+max_scratch_regs) 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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-
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- procedure tcg.free_scratch_reg(list : taasmoutput;r : tregister);
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-
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- begin
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- include(unusedscratchregisters,r);
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- a_reg_dealloc(list,r);
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- end;
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-
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-{*****************************************************************************
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- this methods must be overridden for extra functionality
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-******************************************************************************}
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-
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- procedure tcg.g_interrupt_stackframe_entry(list : taasmoutput);
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-
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- begin
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- end;
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-
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- procedure tcg.g_interrupt_stackframe_exit(list : taasmoutput);
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-
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- begin
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- end;
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-
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- procedure tcg.g_profilecode(list : taasmoutput);
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-
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- begin
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- end;
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-
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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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-
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- procedure tcg.a_param_const(list : taasmoutput;size : tcgsize;a : aword;nr : longint);
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-
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- var
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- hr : tregister;
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-
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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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-
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- procedure tcg.a_param_ref(list : taasmoutput;size : tcgsize;const r : treference;nr : longint);
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-
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- var
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- hr : tregister;
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-
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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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-
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- procedure tcg.a_param_ref_addr(list : taasmoutput;const r : treference;nr : longint);
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-
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- var
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- hr : tregister;
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-
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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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-
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- procedure tcg.g_stackcheck(list : taasmoutput;stackframesize : longint);
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-
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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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-{*****************************************************************************
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- String helper routines
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-*****************************************************************************}
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-
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- procedure tcg.g_removetemps(list : taasmoutput;p : plinkedlist);
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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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- 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,$ff);
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- while assigned(hp) do
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- begin
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- if is_ansistring(hp^.typ) then
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- begin
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- g_decrstrref(list,hp^.address,hp^.typ);
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- tg.ungetiftemp(hp^.address);
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- end;
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- hp:=ptemptodestroy(hp^.next);
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- end;
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- tg.popusedregisters(pushedregs);
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- end;
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-
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- procedure tcg.g_decrstrref(list : taasmoutput;const ref : treference;t : pdef);
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-
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- var
|
|
|
- pushedregs : tpushed;
|
|
|
-
|
|
|
- begin
|
|
|
- tg.pushusedregisters(pushedregs,$ff);
|
|
|
- a_param_ref_addr(list,ref,1);
|
|
|
- if is_ansistring(t) then
|
|
|
- a_call_name(list,'FPC_ANSISTR_DECR_REF',0)
|
|
|
- else if is_widestring(t) then
|
|
|
- a_call_name(list,'FPC_WIDESTR_DECR_REF',0)
|
|
|
- else internalerror(58993);
|
|
|
- tg.popusedregisters(pushedregs);
|
|
|
- end;
|
|
|
-
|
|
|
-{*****************************************************************************
|
|
|
- Code generation for subroutine entry- and exit code
|
|
|
- *****************************************************************************}
|
|
|
-
|
|
|
- { initilizes data of type t }
|
|
|
- { if is_already_ref is true then the routines assumes }
|
|
|
- { that r points to the data to initialize }
|
|
|
- procedure tcg.g_initialize(list : taasmoutput;t : pdef;const ref : treference;is_already_ref : boolean);
|
|
|
-
|
|
|
- var
|
|
|
- hr : treference;
|
|
|
-
|
|
|
- begin
|
|
|
- if is_ansistring(t) or
|
|
|
- is_widestring(t) then
|
|
|
- a_load_const_ref(list,OS_8,0,ref)
|
|
|
- else
|
|
|
- begin
|
|
|
- reset_reference(hr);
|
|
|
- hr.symbol:=t^.get_inittable_label;
|
|
|
- a_param_ref_addr(list,hr,2);
|
|
|
- if is_already_ref then
|
|
|
- a_param_ref(list,OS_ADDR,ref,1)
|
|
|
- else
|
|
|
- a_param_ref_addr(list,ref,1);
|
|
|
- a_call_name(list,'FPC_INITIALIZE',0);
|
|
|
- end;
|
|
|
- end;
|
|
|
-
|
|
|
- procedure tcg.g_finalize(list : taasmoutput;t : pdef;const ref : treference;is_already_ref : boolean);
|
|
|
-
|
|
|
- var
|
|
|
- r : treference;
|
|
|
-
|
|
|
- begin
|
|
|
- if is_ansistring(t) or
|
|
|
- is_widestring(t) then
|
|
|
- begin
|
|
|
- g_decrstrref(list,ref,t);
|
|
|
- end
|
|
|
- else
|
|
|
- begin
|
|
|
- reset_reference(r);
|
|
|
- r.symbol:=t^.get_inittable_label;
|
|
|
- a_param_ref_addr(list,r,2);
|
|
|
- if is_already_ref then
|
|
|
- a_paramaddr_ref(list,ref,1)
|
|
|
- else
|
|
|
- a_param_ref_addr(list,ref,1);
|
|
|
- a_call_name(list,'FPC_FINALIZE',0);
|
|
|
- end;
|
|
|
- end;
|
|
|
-
|
|
|
- { generates the code for initialisation of local data }
|
|
|
- procedure tcg.g_initialize_data(list : taasmoutput;p : psym);
|
|
|
-
|
|
|
- var
|
|
|
- hr : treference;
|
|
|
-
|
|
|
- begin
|
|
|
- {$IFDEF NEWST}
|
|
|
- if (typeof(p^)=typeof(Tvarsym)) and
|
|
|
- assigned(pvarsym(p)^.definition) and
|
|
|
- not((typeof((pvarsym(p)^.definition^))=typeof(Tobjectdef)) and
|
|
|
- (oo_is_class in pobjectdef(pvarsym(p)^.definition)^.options)) and
|
|
|
- pvarsym(p)^.definition^.needs_inittable then
|
|
|
- begin
|
|
|
- procinfo^.flags:=procinfo^.flags or pi_needs_implicit_finally;
|
|
|
- reset_reference(hr);
|
|
|
- if typeof((psym(p)^.owner^))=typeof(Tprocsymtable) then
|
|
|
- begin
|
|
|
- hr.base:=procinfo^.framepointer;
|
|
|
- hr.offset:=-pvarsym(p)^.address;
|
|
|
- end
|
|
|
- else
|
|
|
- begin
|
|
|
- hr.symbol:=newasmsymbol(pvarsym(p)^.mangledname);
|
|
|
- end;
|
|
|
- g_initialize(list,pvarsym(p)^.definition,hr,false);
|
|
|
- end;
|
|
|
- {$ELSE}
|
|
|
- if (psym(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
|
|
|
- procinfo^.flags:=procinfo^.flags or pi_needs_implicit_finally;
|
|
|
- reset_reference(hr);
|
|
|
- if psym(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;
|
|
|
- {$ENDIF NEWST}
|
|
|
- end;
|
|
|
-
|
|
|
-
|
|
|
- { generates the code for incrementing the reference count of parameters }
|
|
|
- procedure tcg.g_incr_data(list : taasmoutput;p : psym);
|
|
|
-
|
|
|
- var
|
|
|
- hr : treference;
|
|
|
-
|
|
|
- begin
|
|
|
- {$IFDEF NEWST}
|
|
|
- if (typeof((psym(p)^))=typeof(Tparamsym)) and
|
|
|
- not((typeof((Pparamsym(p)^.definition^))=typeof(Tobjectdef)) and
|
|
|
- (oo_is_class in pobjectdef(pvarsym(p)^.definition)^.options)) and
|
|
|
- Pparamsym(p)^.definition^.needs_inittable and
|
|
|
- ((Pparamsym(p)^.varspez=vs_value)) then
|
|
|
- begin
|
|
|
- procinfo^.flags:=procinfo^.flags or pi_needs_implicit_finally;
|
|
|
- reset_reference(hr);
|
|
|
- hr.symbol:=pvarsym(p)^.definition^.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;
|
|
|
- {$ELSE}
|
|
|
- if (psym(p)^.typ=varsym) and
|
|
|
- not((pvarsym(p)^.vartype.def^.deftype=objectdef) and
|
|
|
- pobjectdef(pvarsym(p)^.vartype.def)^.is_class) and
|
|
|
- pvarsym(p)^.vartype.def^.needs_inittable and
|
|
|
- ((pvarsym(p)^.varspez=vs_value)) then
|
|
|
- begin
|
|
|
- procinfo^.flags:=procinfo^.flags or pi_needs_implicit_finally;
|
|
|
- reset_reference(hr);
|
|
|
- hr.symbol:=pvarsym(p)^.vartype.def^.get_inittable_label;
|
|
|
- a_param_ref_addr(list,hr,2);
|
|
|
- reset_reference(hr);
|
|
|
- hr.base:=procinfo^.framepointer;
|
|
|
- hr.offset:=pvarsym(p)^.address+procinfo^.para_offset;
|
|
|
- a_param_ref_addr(list,hr,1);
|
|
|
- reset_reference(hr);
|
|
|
- a_call_name(list,'FPC_ADDREF',0);
|
|
|
- end;
|
|
|
- {$ENDIF NEWST}
|
|
|
- end;
|
|
|
-
|
|
|
-
|
|
|
- { generates the code for finalisation of local data }
|
|
|
- procedure tcg.g_finalize_data(list : taasmoutput;p : pnamedindexobject);
|
|
|
-
|
|
|
- var
|
|
|
- hr : treference;
|
|
|
-
|
|
|
- begin
|
|
|
- {$IFDEF NEWST}
|
|
|
- if (typeof((psym(p)^))=typeof(Tvarsym)) and
|
|
|
- assigned(pvarsym(p)^.definition) and
|
|
|
- not((typeof((pvarsym(p)^.definition^))=typeof(Tobjectdef)) and
|
|
|
- (oo_is_class in pobjectdef(pvarsym(p)^.definition)^.options)) and
|
|
|
- pvarsym(p)^.definition^.needs_inittable then
|
|
|
- begin
|
|
|
- { not all kind of parameters need to be finalized }
|
|
|
- if (typeof((psym(p)^.owner^))=typeof(Tprocsymtable)) and
|
|
|
- ((pparamsym(p)^.varspez=vs_var) or
|
|
|
- (Pparamsym(p)^.varspez=vs_const) { and
|
|
|
- (dont_copy_const_param(pvarsym(p)^.definition)) } ) then
|
|
|
- exit;
|
|
|
- procinfo^.flags:=procinfo^.flags or pi_needs_implicit_finally;
|
|
|
- reset_reference(hr);
|
|
|
- if typeof((Psym(p)^.owner^))=typeof(Tprocsymtable) then
|
|
|
- begin
|
|
|
- hr.base:=procinfo^.framepointer;
|
|
|
- hr.offset:=-pvarsym(p)^.address;
|
|
|
- end
|
|
|
- else if typeof((Psym(p)^.owner^))=typeof(Tprocsymtable) then
|
|
|
- begin
|
|
|
- hr.base:=procinfo^.framepointer;
|
|
|
- hr.offset:=pvarsym(p)^.address+procinfo^.para_offset;
|
|
|
- end
|
|
|
- else
|
|
|
- hr.symbol:=newasmsymbol(pvarsym(p)^.mangledname);
|
|
|
- g_finalize(list,pvarsym(p)^.definition,hr,false);
|
|
|
- end;
|
|
|
- {$ELSE}
|
|
|
- if (psym(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 (psym(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 psym(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;
|
|
|
- {$ENDIF NEWST}
|
|
|
- end;
|
|
|
-
|
|
|
-
|
|
|
- { generates the code to make local copies of the value parameters }
|
|
|
- procedure tcg.g_copyvalueparas(list : taasmoutput;p : pnamedindexobject);
|
|
|
- begin
|
|
|
- runerror(255);
|
|
|
- end;
|
|
|
-
|
|
|
- var
|
|
|
- _list : taasmoutput;
|
|
|
-
|
|
|
- { wrappers for the methods, because TP doesn't know procedures }
|
|
|
- { of objects }
|
|
|
-
|
|
|
- {$IFNDEF NEWST}
|
|
|
- procedure _copyvalueparas(s : pnamedindexobject);{$ifndef FPC}far;{$endif}
|
|
|
-
|
|
|
- begin
|
|
|
- cg^.g_copyvalueparas(_list,s);
|
|
|
- end;
|
|
|
- {$ENDIF NEWST}
|
|
|
-
|
|
|
- procedure tcg.g_finalizetempansistrings(list : taasmoutput);
|
|
|
-
|
|
|
- var
|
|
|
- hp : ptemprecord;
|
|
|
- hr : treference;
|
|
|
-
|
|
|
- begin
|
|
|
- hp:=tg.templist;
|
|
|
- while assigned(hp) do
|
|
|
- begin
|
|
|
- if hp^.temptype in [tt_ansistring,tt_freeansistring] then
|
|
|
- begin
|
|
|
- procinfo^.flags:=procinfo^.flags or pi_needs_implicit_finally;
|
|
|
- reset_reference(hr);
|
|
|
- hr.base:=procinfo^.framepointer;
|
|
|
- hr.offset:=hp^.pos;
|
|
|
- a_param_ref_addr(list,hr,1);
|
|
|
- a_call_name(list,'FPC_ANSISTR_DECR_REF',0);
|
|
|
- end;
|
|
|
- hp:=hp^.next;
|
|
|
- end;
|
|
|
- end;
|
|
|
-
|
|
|
- {$IFDEF NEWST}
|
|
|
- procedure _initialize_local(s:Pnamedindexobject);{$IFNDEF FPC}far;{$ENDIF}
|
|
|
-
|
|
|
- begin
|
|
|
- if typeof(s^)=typeof(Tparamsym) then
|
|
|
- cg^.g_incr_data(_list,Psym(s))
|
|
|
- else
|
|
|
- cg^.g_initialize_data(_list,Psym(s));
|
|
|
- end;
|
|
|
-
|
|
|
- procedure _finalize_data(s : pnamedindexobject);{$ifndef FPC}far;{$endif}
|
|
|
-
|
|
|
- begin
|
|
|
- if typeof(s^)=typeof(Tvarsym) then
|
|
|
- cg^.g_finalize_data(_list,s);
|
|
|
- end;
|
|
|
-
|
|
|
- {$ELSE}
|
|
|
- procedure _finalize_data(s : pnamedindexobject);{$ifndef FPC}far;{$endif}
|
|
|
-
|
|
|
- begin
|
|
|
- cg^.g_finalize_data(_list,s);
|
|
|
- end;
|
|
|
-
|
|
|
- procedure _incr_data(s : pnamedindexobject);{$ifndef FPC}far;{$endif}
|
|
|
-
|
|
|
- begin
|
|
|
- cg^.g_incr_data(_list,psym(s));
|
|
|
- end;
|
|
|
-
|
|
|
- procedure _initialize_data(s : pnamedindexobject);{$ifndef FPC}far;{$endif}
|
|
|
-
|
|
|
- begin
|
|
|
- cg^.g_initialize_data(_list,psym(s));
|
|
|
- end;
|
|
|
- {$ENDIF NEWST}
|
|
|
-
|
|
|
- { generates the entry code for a procedure }
|
|
|
- procedure tcg.g_entrycode(list : taasmoutput;const proc_names:Tstringcontainer;make_global:boolean;
|
|
|
- stackframe:longint;var parasize:longint;var nostackframe:boolean;
|
|
|
- inlined : boolean);
|
|
|
-
|
|
|
-
|
|
|
- {$IFDEF NEWST}
|
|
|
- procedure _copyvalueparas(s:Pparamsym);{$ifndef FPC}far;{$endif}
|
|
|
-
|
|
|
- begin
|
|
|
- cg^.g_copyvalueparas(_list,s);
|
|
|
- end;
|
|
|
- {$ENDIF NEWST}
|
|
|
-
|
|
|
- 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 }
|
|
|
- {$IFDEF NEWST}
|
|
|
- if (posavestdregs in aktprocdef^.options) then
|
|
|
- {$ELSE}
|
|
|
- if (po_savestdregs in aktprocsym^.definition^.procoptions) then
|
|
|
- {$ENDIF NEWST}
|
|
|
- begin
|
|
|
- for r:=firstreg to lastreg do
|
|
|
- begin
|
|
|
- if (r in registers_saved_on_cdecl) then
|
|
|
- if (r in (tg.availabletempregsint+
|
|
|
- tg.availabletempregsfpu+
|
|
|
- tg.availabletempregsmm)) then
|
|
|
- begin
|
|
|
- if not(r in tg.usedinproc) then
|
|
|
- {!!!!!!!!!!!! a_push_reg(list,r) }
|
|
|
- end
|
|
|
- else
|
|
|
- {!!!!!!!! a_push_reg(list,r) };
|
|
|
- end;
|
|
|
- end;
|
|
|
- { omit stack frame ? }
|
|
|
- if not inlined then
|
|
|
- if procinfo^.framepointer=stack_pointer then
|
|
|
- begin
|
|
|
- CGMessage(cg_d_stackframe_omited);
|
|
|
- nostackframe:=true;
|
|
|
- {$IFDEF NEWST}
|
|
|
- if (aktprocdef^.proctype in [potype_unitinit,potype_proginit,potype_unitfinalize]) then
|
|
|
- parasize:=0
|
|
|
- else
|
|
|
- parasize:=aktprocdef^.localst^.paramdatasize+procinfo^.para_offset-pointersize;
|
|
|
- {$ELSE}
|
|
|
- if (aktprocsym^.definition^.proctypeoption in [potype_unitinit,potype_proginit,potype_unitfinalize]) then
|
|
|
- parasize:=0
|
|
|
- else
|
|
|
- parasize:=aktprocsym^.definition^.parast^.datasize+procinfo^.para_offset-pointersize;
|
|
|
- {$ENDIF NEWST}
|
|
|
- end
|
|
|
- else
|
|
|
- begin
|
|
|
- {$IFDEF NEWST}
|
|
|
- if (aktprocdef^.proctype in [potype_unitinit,potype_proginit,potype_unitfinalize]) then
|
|
|
- parasize:=0
|
|
|
- else
|
|
|
- parasize:=aktprocdef^.localst^.paramdatasize+procinfo^.para_offset-pointersize*2;
|
|
|
- {$ELSE}
|
|
|
- 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;
|
|
|
- {$ENDIF}
|
|
|
- nostackframe:=false;
|
|
|
- {$IFDEF NEWST}
|
|
|
- if (pointerrupt in aktprocdef^.options) then
|
|
|
- g_interrupt_stackframe_entry(list);
|
|
|
- {$ELSE}
|
|
|
- if (po_interrupt in aktprocsym^.definition^.procoptions) then
|
|
|
- g_interrupt_stackframe_entry(list);
|
|
|
- {$ENDIF NEWST}
|
|
|
-
|
|
|
- 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);
|
|
|
- {$IFDEF NEWST}
|
|
|
- if (not inlined) and (aktprocdef^.proctype in [potype_unitinit]) then
|
|
|
- {$ELSE}
|
|
|
- if (not inlined) and (aktprocsym^.definition^.proctypeoption in [potype_unitinit]) then
|
|
|
- {$ENDIF NEWST}
|
|
|
- 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}
|
|
|
-
|
|
|
- {$IFDEF NEWST}
|
|
|
- { initialize return value }
|
|
|
- if assigned(procinfo^.retdef) and
|
|
|
- is_ansistring(procinfo^.retdef) or
|
|
|
- is_widestring(procinfo^.retdef) then
|
|
|
- begin
|
|
|
- reset_reference(hr);
|
|
|
- hr.offset:=procinfo^.return_offset;
|
|
|
- hr.base:=procinfo^.framepointer;
|
|
|
- a_load_const_ref(list,OS_32,0,hr);
|
|
|
- end;
|
|
|
- {$ELSE}
|
|
|
- { 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;
|
|
|
- {$ENDIF}
|
|
|
-
|
|
|
- _list:=list;
|
|
|
- { generate copies of call by value parameters }
|
|
|
- {$IFDEF NEWST}
|
|
|
- if (poassembler in aktprocdef^.options) then
|
|
|
- aktprocdef^.parameters^.foreach(@_copyvalueparas);
|
|
|
- {$ELSE}
|
|
|
- if (po_assembler in aktprocsym^.definition^.procoptions) then
|
|
|
- aktprocsym^.definition^.parast^.foreach({$ifdef FPC}@{$endif FPC}_copyvalueparas);
|
|
|
- {$ENDIF NEWST}
|
|
|
-
|
|
|
- {$IFDEF NEWST}
|
|
|
- { initialisizes local data }
|
|
|
- aktprocdef^.localst^.foreach({$ifdef FPC}@{$endif FPC}_initialize_local);
|
|
|
- {$ELSE}
|
|
|
- { initialisizes local data }
|
|
|
- aktprocsym^.definition^.localst^.foreach({$ifdef FPC}@{$endif FPC}_initialize_data);
|
|
|
- { add a reference to all call by value/const parameters }
|
|
|
- aktprocsym^.definition^.parast^.foreach({$ifdef FPC}@{$endif FPC}_incr_data);
|
|
|
- {$ENDIF NEWST}
|
|
|
-
|
|
|
- {$IFDEF NEWST}
|
|
|
- if (cs_profile in aktmoduleswitches) or
|
|
|
- (typeof(aktprocdef^.owner^)=typeof(Tglobalsymtable)) or
|
|
|
- (typeof(aktprocdef^.owner^)=typeof(Timplsymtable)) or
|
|
|
- (assigned(procinfo^._class) and
|
|
|
- (typeof(procinfo^._class^.owner^)=typeof(Tglobalsymtable)) or
|
|
|
- (typeof(procinfo^._class^.owner^)=typeof(Timplsymtable))) then
|
|
|
- make_global:=true;
|
|
|
- {$ELSE}
|
|
|
- if (cs_profile in aktmoduleswitches) or
|
|
|
- (aktprocsym^.definition^.owner^.symtabletype=globalsymtable) or
|
|
|
- (assigned(procinfo^._class) and (procinfo^._class^.owner^.symtabletype=globalsymtable)) then
|
|
|
- make_global:=true;
|
|
|
- {$ENDIF NEWST}
|
|
|
- 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}
|
|
|
- end;
|
|
|
-
|
|
|
- procedure tcg.g_exitcode(list : taasmoutput;parasize:longint;nostackframe,inlined:boolean);
|
|
|
-
|
|
|
- var
|
|
|
- {$ifdef GDB}
|
|
|
- mangled_length : longint;
|
|
|
- p : pchar;
|
|
|
- {$endif GDB}
|
|
|
- nofinal,noreraiselabel : pasmlabel;
|
|
|
- hr : treference;
|
|
|
- r : tregister;
|
|
|
-
|
|
|
- begin
|
|
|
- if aktexitlabel^.is_used then
|
|
|
- list^.insert(new(pai_label,init(aktexitlabel)));
|
|
|
-
|
|
|
- { call the destructor help procedure }
|
|
|
- {$IFDEF NEWST}
|
|
|
- if (aktprocdef^.proctype=potype_destructor) then
|
|
|
- {$ELSE}
|
|
|
- if (aktprocsym^.definition^.proctypeoption=potype_destructor) then
|
|
|
- {$ENDIF}
|
|
|
- begin
|
|
|
- {$IFDEF NEWST}
|
|
|
- if oo_is_class in procinfo^._class^.options then
|
|
|
- {$ELSE NEWST}
|
|
|
- if procinfo^._class^.is_class then
|
|
|
- {$ENDIF}
|
|
|
- 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 }
|
|
|
- {$IFDEF NEWST}
|
|
|
- aktprocdef^.localst^.foreach({$ifndef TP}@{$endif}_finalize_data);
|
|
|
- {$ELSE}
|
|
|
- aktprocsym^.definition^.localst^.foreach({$ifndef TP}@{$endif}_finalize_data);
|
|
|
- {$ENDIF}
|
|
|
-
|
|
|
- {$IFNDEF NEWST}
|
|
|
- { finalize paras data }
|
|
|
- if assigned(aktprocsym^.definition^.parast) then
|
|
|
- aktprocsym^.definition^.parast^.foreach({$ifndef TP}@{$endif}_finalize_data);
|
|
|
- {$ENDIF NEWST}
|
|
|
-
|
|
|
- { do we need to handle exceptions because of ansi/widestrings ? }
|
|
|
- if (procinfo^.flags and pi_needs_implicit_finally)<>0 then
|
|
|
- begin
|
|
|
- getlabel(noreraiselabel);
|
|
|
-
|
|
|
- a_call_name(list,'FPC_POPADDRSTACK',0);
|
|
|
- a_reg_alloc(list,accumulator);
|
|
|
- g_pop_exception_value_reg(list,accumulator);
|
|
|
- a_cmp_const_reg_label(list,OS_32,OC_EQ,0,accumulator,noreraiselabel);
|
|
|
- a_reg_dealloc(list,accumulator);
|
|
|
-
|
|
|
- {$IFDEF NEWST}
|
|
|
- { must be the return value finalized before reraising the exception? }
|
|
|
- if (procinfo^.retdef<>pdef(voiddef)) and
|
|
|
- (procinfo^.retdef^.needs_inittable) and
|
|
|
- ((typeof(procinfo^.retdef^)<>typeof(Tobjectdef)) or
|
|
|
- not(oo_is_class in pobjectdef(procinfo^.retdef)^.options)) then
|
|
|
- begin
|
|
|
- reset_reference(hr);
|
|
|
- hr.offset:=procinfo^.return_offset;
|
|
|
- hr.base:=procinfo^.framepointer;
|
|
|
- g_finalize(list,procinfo^.retdef,hr,not (dp_ret_in_acc in procinfo^.retdef^.properties));
|
|
|
- end;
|
|
|
- {$ELSE}
|
|
|
- { must be the return value finalized before reraising the exception? }
|
|
|
- if (procinfo^.returntype.def<>pdef(voiddef)) and
|
|
|
- (procinfo^.returntype.def^.needs_inittable) and
|
|
|
- ((procinfo^.returntype.def^.deftype<>objectdef) or
|
|
|
- not(pobjectdef(procinfo^.returntype.def)^.is_class)) then
|
|
|
- begin
|
|
|
- reset_reference(hr);
|
|
|
- hr.offset:=procinfo^.return_offset;
|
|
|
- hr.base:=procinfo^.framepointer;
|
|
|
- g_finalize(list,procinfo^.returntype.def,hr,ret_in_param(procinfo^.returntype.def));
|
|
|
- end;
|
|
|
- {$ENDIF}
|
|
|
-
|
|
|
- a_call_name(list,'FPC_RERAISE',0);
|
|
|
- a_label(list,noreraiselabel);
|
|
|
- end;
|
|
|
-
|
|
|
- { call __EXIT for main program }
|
|
|
- {$IFDEF NEWST}
|
|
|
- if (not DLLsource) and (not inlined) and (aktprocdef^.proctype=potype_proginit) then
|
|
|
- a_call_name(list,'FPC_DO_EXIT',0);
|
|
|
- {$ELSE}
|
|
|
- if (not DLLsource) and (not inlined) and (aktprocsym^.definition^.proctypeoption=potype_proginit) then
|
|
|
- a_call_name(list,'FPC_DO_EXIT',0);
|
|
|
- {$ENDIF NEWST}
|
|
|
-
|
|
|
- { handle return value }
|
|
|
- {$IFDEF NEWST}
|
|
|
- if not(poassembler in aktprocdef^.options) then
|
|
|
- if (aktprocdef^.proctype<>potype_constructor) then
|
|
|
- {$ELSE}
|
|
|
- if not(po_assembler in aktprocsym^.definition^.procoptions) then
|
|
|
- if (aktprocsym^.definition^.proctypeoption<>potype_constructor) then
|
|
|
- {$ENDIF NEWST}
|
|
|
- { 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
|
|
|
- {$IFDEF NEWST}
|
|
|
- if pointerrupt in aktprocdef^.options then
|
|
|
- {$ELSE}
|
|
|
- if po_interrupt in aktprocsym^.definition^.procoptions then
|
|
|
- {$ENDIF NEWST}
|
|
|
- g_interrupt_stackframe_exit(list)
|
|
|
- else
|
|
|
- g_return_from_proc(list,parasize);
|
|
|
- {$IFDEF NEWST}
|
|
|
- list^.concat(new(pai_symbol_end,initname(aktprocdef^.mangledname)));
|
|
|
- {$ELSE NEWST}
|
|
|
- list^.concat(new(pai_symbol_end,initname(aktprocsym^.definition^.mangledname)));
|
|
|
- {$ENDIF NEWST}
|
|
|
-
|
|
|
- {$ifdef GDB}
|
|
|
- if (cs_debuginfo in aktmoduleswitches) and not inlined then
|
|
|
- begin
|
|
|
- aktprocsym^.concatstabto(list);
|
|
|
- if assigned(procinfo^._class) then
|
|
|
- if (not assigned(procinfo^.parent) or
|
|
|
- not assigned(procinfo^.parent^._class)) then
|
|
|
- list^.concat(new(pai_stabs,init(strpnew(
|
|
|
- '"$t:v'+procinfo^._class^.numberstring+'",'+
|
|
|
- tostr(N_PSYM)+',0,0,'+tostr(procinfo^.selfpointer_offset)))));
|
|
|
- {!!!!!!!!!!!!
|
|
|
- else
|
|
|
- list^.concat(new(pai_stabs,init(strpnew(
|
|
|
- '"$t:r'+procinfo^._class^.numberstring+'",'+
|
|
|
- tostr(N_RSYM)+',0,0,'+tostr(GDB_i386index[R_ESI])))));
|
|
|
- }
|
|
|
- if (pdef(aktprocsym^.definition^.rettype.def) <> pdef(voiddef)) then
|
|
|
- begin
|
|
|
- if ret_in_param(aktprocsym^.definition^.rettype.def) then
|
|
|
- list^.concat(new(pai_stabs,init(strpnew(
|
|
|
- '"'+aktprocsym^.name+':X*'+aktprocsym^.definition^.rettype.def^.numberstring+'",'+
|
|
|
- tostr(N_PSYM)+',0,0,'+tostr(procinfo^.return_offset)))))
|
|
|
- else
|
|
|
- list^.concat(new(pai_stabs,init(strpnew(
|
|
|
- '"'+aktprocsym^.name+':X'+aktprocsym^.definition^.rettype.def^.numberstring+'",'+
|
|
|
- tostr(N_PSYM)+',0,0,'+tostr(procinfo^.return_offset)))));
|
|
|
- if (m_result in aktmodeswitches) then
|
|
|
- if ret_in_param(aktprocsym^.definition^.rettype.def) then
|
|
|
- list^.concat(new(pai_stabs,init(strpnew(
|
|
|
- '"RESULT:X*'+aktprocsym^.definition^.rettype.def^.numberstring+'",'+
|
|
|
- tostr(N_PSYM)+',0,0,'+tostr(procinfo^.return_offset)))))
|
|
|
- else
|
|
|
- list^.concat(new(pai_stabs,init(strpnew(
|
|
|
- '"RESULT:X'+aktprocsym^.definition^.rettype.def^.numberstring+'",'+
|
|
|
- tostr(N_PSYM)+',0,0,'+tostr(procinfo^.return_offset)))));
|
|
|
- end;
|
|
|
- mangled_length:=length(aktprocsym^.definition^.mangledname);
|
|
|
- getmem(p,mangled_length+50);
|
|
|
- strpcopy(p,'192,0,0,');
|
|
|
- strpcopy(strend(p),aktprocsym^.definition^.mangledname);
|
|
|
- list^.concat(new(pai_stabn,init(strnew(p))));
|
|
|
- {list^.concat(new(pai_stabn,init(strpnew('192,0,0,'
|
|
|
- +aktprocsym^.definition^.mangledname))));
|
|
|
- p[0]:='2';p[1]:='2';p[2]:='4';
|
|
|
- strpcopy(strend(p),'_end');}
|
|
|
- freemem(p,mangled_length+50);
|
|
|
- list^.concat(new(pai_stabn,init(
|
|
|
- strpnew('224,0,0,'+aktexit2label^.name))));
|
|
|
- { strpnew('224,0,0,'
|
|
|
- +aktprocsym^.definition^.mangledname+'_end'))));}
|
|
|
- end;
|
|
|
- {$endif GDB}
|
|
|
- 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,tmpref,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(lost,size,loc.register,reg);
|
|
|
- else
|
|
|
- internalerror(200109092);
|
|
|
- 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,size,a,tmpreg);
|
|
|
- a_load_reg_ref(list,size,tmpreg,ref);
|
|
|
- free_scratch_reg(tmpreg);
|
|
|
- end;
|
|
|
-
|
|
|
-
|
|
|
- procedure tcg.a_op_const_loc(list : taasmoutput; Op: TOpCG; size: TCGSize; a: AWord; const loc: tloocation);
|
|
|
-
|
|
|
- begin
|
|
|
- case loc.loc of
|
|
|
- LOC_REGISTER, LOC_CREGISTER:
|
|
|
- a_op_const_reg(list,op,size,a,loc.register);
|
|
|
- LOC_REFERENCE, LOC_MEM:
|
|
|
- a_op_const_reg(list,op,size,a,loc.reference);
|
|
|
- else
|
|
|
- internalerror(200109061);
|
|
|
- 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(tmpreg);
|
|
|
- end;
|
|
|
-
|
|
|
-
|
|
|
- procedure tcg.a_op_ref_reg(list : taasmoutput; Op: TOpCG; size: TCGSize; const ref: TReference; reg: TRegister); virtual;
|
|
|
- var
|
|
|
- tmpreg: tregister;
|
|
|
-
|
|
|
- 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(tmpreg);
|
|
|
- end;
|
|
|
-
|
|
|
-
|
|
|
- procedure tcg.a_op_reg_loc(list : taasmoutput; Op: TOpCG; size: TCGSize; const ref: TReference; const loc: tloocation);
|
|
|
-
|
|
|
- begin
|
|
|
- case loc.loc of
|
|
|
- LOC_REGISTER, LOC_CREGISTER:
|
|
|
- a_op_reg_reg(list,op,size,a,loc.register);
|
|
|
- LOC_REFERENCE, LOC_MEM:
|
|
|
- a_op_reg_ref(list,op,size,a,loc.reference);
|
|
|
- else
|
|
|
- internalerror(200109061);
|
|
|
- end;
|
|
|
-
|
|
|
-
|
|
|
- procedure tcg.a_op_ref_loc(list : taasmoutput; Op: TOpCG; size: TCGSize; const ref: TReference; const loc: tloocation);
|
|
|
-
|
|
|
- var
|
|
|
- tmpreg: tregister;
|
|
|
-
|
|
|
- begin
|
|
|
- case loc.loc of
|
|
|
- LOC_REGISTER,LOC_CREGISTER:
|
|
|
- a_op_ref_reg(list,op,size,ref,loc.register,l);
|
|
|
- LOC_REFERENCE,LOC_MEM:
|
|
|
- begin
|
|
|
- tmpreg := get_scratch_reg(list);
|
|
|
- a_load_ref_reg(size,reftmpreg);
|
|
|
- a_op_reg_ref(list,op,size,tmpreg,location.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 : pasmlabel);
|
|
|
-
|
|
|
- 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(tmpreg);
|
|
|
- end;
|
|
|
-
|
|
|
- procedure tcg.a_cmp_const_loc_label(list : taasmoutput;size : tcgsize;cmp_op : topcmp;a : aword;const loc : tlocation;
|
|
|
- l : pasmlabel);
|
|
|
-
|
|
|
- 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 : pasmlabel);
|
|
|
-
|
|
|
- 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,a,tmpreg,l);
|
|
|
- free_scratch_reg(tmpreg);
|
|
|
- end;
|
|
|
-
|
|
|
- procedure tcg.a_cmp_ref_loc_label(list : taasmoutput;size : tcgsize;cmp_op : topcmp;const ref: treference;const loc : tlocation;
|
|
|
- l : pasmlabel);
|
|
|
-
|
|
|
- var
|
|
|
- tmpreg: tregister;
|
|
|
-
|
|
|
- begin
|
|
|
- case loc.loc of
|
|
|
- LOC_REGISTER,LOC_CREGISTER:
|
|
|
- { we reverse the operands, so also do the inverse comparison }
|
|
|
- a_cmp_reg_ref_label(list,size,inverse_opcmp(cmp_op),loc.register,ref,l);
|
|
|
- LOC_REFERENCE,LOC_MEM:
|
|
|
- begin
|
|
|
- tmpreg := get_scratch_reg(list);
|
|
|
- a_load_ref_reg(size,reftmpreg);
|
|
|
- a_cmp_reg_ref(list,size,cmp_op,tmpreg,location.reference,l);
|
|
|
- free_scratch_reg(list,tmpreg);
|
|
|
- end;
|
|
|
- else
|
|
|
- internalerror(200109061);
|
|
|
- end;
|
|
|
- end;
|
|
|
-
|
|
|
-end.
|
|
|
-{
|
|
|
- $Log$
|
|
|
- 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
|
|
|
-
|
|
|
-}
|
Jonas Maebe