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/*
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Copyright (c) 1993 Open Software Foundation, Inc.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software
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and its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appears in all
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copies and that both the copyright notice and this permission
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notice appear in supporting documentation.
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OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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PARTICULAR PURPOSE.
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IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
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CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
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NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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Crown Copyright (c) 1997
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This TenDRA(r) Computer Program is subject to Copyright
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owned by the United Kingdom Secretary of State for Defence
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acting through the Defence Evaluation and Research Agency
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(DERA). It is made available to Recipients with a
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royalty-free licence for its use, reproduction, transfer
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to other parties and amendment for any purpose not excluding
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product development provided that any such use et cetera
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shall be deemed to be acceptance of the following conditions:-
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(1) Its Recipients shall ensure that this Notice is
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reproduced upon any copies or amended versions of it;
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(2) Any amended version of it shall be clearly marked to
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show both the nature of and the organisation responsible
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for the relevant amendment or amendments;
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(3) Its onward transfer from a recipient to another
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party shall be deemed to be that party's acceptance of
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these conditions;
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(4) DERA gives no warranty or assurance as to its
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quality or suitability for any purpose and DERA accepts
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no liability whatsoever in relation to any use to which
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it may be put.
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*/
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/**********************************************************************
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$Author: release $
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$Date: 1998/02/04 15:49:10 $
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$Revision: 1.2 $
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$Log: stack.h,v $
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* Revision 1.2 1998/02/04 15:49:10 release
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* Added OSF copyright message.
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*
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* Revision 1.1.1.1 1998/01/17 15:55:58 release
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* First version to be checked into rolling release.
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*
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* Revision 1.2 1996/10/04 16:04:30 pwe
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* add banners and mod for PWE ownership
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*
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**********************************************************************/
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#ifndef STACK_H
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#define STACK_H 1
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#define ALIGNNEXT(bitposn, bitalign) (((bitposn)+(bitalign)-1) & ~((bitalign)-1))
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#define ALLOCA_ALIGNMENT(n) ((n+7) & ~7)
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/* Stack frame layout, from Assembler Reference manual page 4-19, in bytes */
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#define STACK_LINK_AREA_SIZE 24
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#define STACK_BACK_CHAIN 0
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#define STACK_SAVED_CR 4
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#define STACK_SAVED_LR 8
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#define STACK_RESERVED1 12
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#define STACK_RESERVED2 16
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#define STACK_SAVED_TOC 20
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#define STACK_ARG_AREA STACK_LINK_AREA_SIZE
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#define STACK_FIXED_REG_DUMP_AREA_SIZE (19*4) /* 19 fixed point */
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#define STACK_FLOAT_REG_DUMP_AREA_SIZE ((18*2)*4) /* 18 doubles */
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#define STACK_REG_DUMP_AREA_SIZE (ALIGNNEXT(STACK_FIXED_REG_DUMP_AREA_SIZE,8) \
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+STACK_FLOAT_REG_DUMP_AREA_SIZE)
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#define STACK_MIN_MAXARGS (8*4) /* 8 words of params */
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/* info on the stack frame of current proc being coded */
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extern long p_no_of_returns;
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extern long p_sreg_first_save;
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extern long p_sfreg_first_save;
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extern long p_frame_size;
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extern long p_locals_offset;
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extern long p_maxargbytes;
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extern long p_args_and_link_size;/* maximum size of parameter list + LINK_AREA size in bytes */
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extern bool p_has_fp;
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extern bool p_has_saved_sp;
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extern bool p_leaf;
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extern bool p_has_back_chain;
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extern bool p_has_alloca;
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extern bool p_save_all_sregs;
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extern bool p_has_vcallees;
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extern bool p_has_no_vcallers;
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extern long p_fixed_params;
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extern long p_float_params;
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extern long p_saved_sp_offset;
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extern long p_callee_size;
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extern bool p_has_tp;
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extern int p_return_label;
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extern ans p_result;/* what the result of the proc is */
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extern exp p_current;
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extern void generate_procedure_prologue PROTO_S ((void));
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extern void generate_procedure_epilogue PROTO_S ((void));
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extern void generate_untidy_procedure_epilogue PROTO_S ((void));
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extern void save_sp_on_stack PROTO_S ((void));
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extern void get_sp_from_stack PROTO_S ((void));
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extern void save_back_chain_using_frame_pointer PROTO_S ((void));
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extern void initialise_procedure PROTO_S ((procrec *));
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extern void restore_sregs PROTO_S ((int,int));
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extern void restore_link_register PROTO_S ((void));
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#define EXTRA_CALLEE_BYTES 8 /* the number of bytes added on to the callees i.e 4 to hold saved chain*/
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#endif
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