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Digital Research
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Sepp J Morris
2020-11-06 18:50:37 +01:00
parent 621ed8ccaf
commit 31738079c4
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164
ASSEMBLY & COMPILE TOOLS/PLM VAX COMPILER/plmvax/savetree.for Normal file
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C***********************************************************************
C
C SAVETREE.FOR
C
C
C D I S C L A I M E R N O T I C E
C ------------------- -----------
C
C This document and/or portions of the material and data furnished
C herewith, was developed under sponsorship of the U. S. Government.
C Neither the U.S. nor the U.S.D.O.E., nor the Leland Stanford Junior
C University, nor their employees, nor their respective contractors,
C subcontractors, or their employees, makes any warranty, express or
C implied, or assumes any liability or responsibility for accuracy,
C completeness or usefulness of any information, apparatus, product
C or process disclosed, or represents that its use will not infringe
C privately-owned rights. Mention of any product, its manufacturer,
C or suppliers shall not, nor is it intended to, imply approval, dis-
C approval, or fitness for any particular use. The U. S. and the
C University at all times retain the right to use and disseminate same
C for any purpose whatsoever. Such distribution shall be made by the
C National Energy Software Center at the Argonne National Laboratory
C and only subject to the distributee furnishing satisfactory proof
C that he has a valid license from the Intel Corporation in effect.
C
C
C-----------------------------------------------------------------------
C
C This module of the PL/M-VAX compiler contains routines to save
C and restore the current code tree.
C
C-----------------------------------------------------------------------
C R E V I S I O N H I S T O R Y
C
C 20OCT81 Alex Hunter 1. Added disclaimer notice. (V5.4)
C 24OCT81 Alex Hunter 1. Save and restore atom serial no. (V5.6)
C 12NOV81 Alex Hunter 1. Change ATOM_DISP to I*4. (V6.1)
C
C-----------------------------------------------------------------------
SUBROUTINE SAVE_CODE_TREE
INCLUDE 'PLMCOM.FOR/NOLIST'
N=NEXT_NODE-NODE_MIN
IF (N.GT.0) THEN
CALL PUSH(OPNODE_OP(NODE_MIN),N)
CALL PUSH(OPNODE_OPND1(NODE_MIN),N)
CALL PUSH(OPNODE_OPND2(NODE_MIN),N)
CALL PUSH(NODE_REG(NODE_MIN),N)
CALL PUSH(NODE_REFCT(NODE_MIN),N)
CALL PUSH(NODE_TYPE(NODE_MIN),N)
CALL PUSH(NODE_CONTEXT(NODE_MIN),N)
ENDIF
CALL PUSH(NEXT_NODE,1)
N=NEXT_ATOM-FIRST_FREE_ATOM
IF (N.GT.0) THEN
CALL PUSH(ATOM_SYM(FIRST_FREE_ATOM),N)
CALL PUSH(ATOM_MEM(FIRST_FREE_ATOM),N)
CALL PUSH(ATOM_BASE(FIRST_FREE_ATOM),N)
CALL PUSH(ATOM_SUB(FIRST_FREE_ATOM),N)
CALL PUSH(ATOM_DISP(FIRST_FREE_ATOM),N*2)
CALL PUSH(ATOM_FLAGS(FIRST_FREE_ATOM),N)
CALL PUSH(ATOM_SERIAL_NO(FIRST_FREE_ATOM),N)
CALL PUSH(NODE_REG(FIRST_FREE_ATOM),N)
CALL PUSH(NODE_REFCT(FIRST_FREE_ATOM),N)
CALL PUSH(NODE_TYPE(FIRST_FREE_ATOM),N)
CALL PUSH(NODE_CONTEXT(FIRST_FREE_ATOM),N)
ENDIF
CALL PUSH(NEXT_ATOM,1)
N=NEXT_FIXED-FIX_MIN
IF (N.GT.0) THEN
CALL PUSH(FIXED_VAL(FIX_MIN),N*2)
CALL PUSH(NODE_REG(FIX_MIN),N)
CALL PUSH(NODE_REFCT(FIX_MIN),N)
CALL PUSH(NODE_TYPE(FIX_MIN),N)
CALL PUSH(NODE_CONTEXT(FIX_MIN),N)
ENDIF
CALL PUSH(NEXT_FIXED,1)
N=NEXT_FLOAT-FLT_MIN
IF (N.GT.0) THEN
CALL PUSH(FLOAT_VAL(FLT_MIN),N*4)
CALL PUSH(NODE_REG(FLT_MIN),N)
CALL PUSH(NODE_REFCT(FLT_MIN),N)
CALL PUSH(NODE_TYPE(FLT_MIN),N)
CALL PUSH(NODE_CONTEXT(FLT_MIN),N)
ENDIF
CALL PUSH(NEXT_FLOAT,1)
N=NEXT_CONSTANT-CON_MIN
IF (N.GT.0) THEN
CALL PUSH(CONSTANT_LABEL(CON_MIN),N)
CALL PUSH(NODE_REG(CON_MIN),N)
CALL PUSH(NODE_REFCT(CON_MIN),N)
CALL PUSH(NODE_TYPE(CON_MIN),N)
CALL PUSH(NODE_CONTEXT(CON_MIN),N)
ENDIF
CALL PUSH(NEXT_CONSTANT,1)
RETURN
C-------------------------------
ENTRY RESTORE_CODE_TREE
C-------------------------------
CALL POP(NEXT_CONSTANT,1)
N=NEXT_CONSTANT-CON_MIN
IF (N.GT.0) THEN
CALL POP(NODE_CONTEXT(CON_MIN),N)
CALL POP(NODE_TYPE(CON_MIN),N)
CALL POP(NODE_REFCT(CON_MIN),N)
CALL POP(NODE_REG(CON_MIN),N)
CALL POP(CONSTANT_LABEL(CON_MIN),N)
ENDIF
CALL POP(NEXT_FLOAT,1)
N=NEXT_FLOAT-FLT_MIN
IF (N.GT.0) THEN
CALL POP(NODE_CONTEXT(FLT_MIN),N)
CALL POP(NODE_TYPE(FLT_MIN),N)
CALL POP(NODE_REFCT(FLT_MIN),N)
CALL POP(NODE_REG(FLT_MIN),N)
CALL POP(FLOAT_VAL(FLT_MIN),N*4)
ENDIF
CALL POP(NEXT_FIXED,1)
N=NEXT_FIXED-FIX_MIN
IF (N.GT.0) THEN
CALL POP(NODE_CONTEXT(FIX_MIN),N)
CALL POP(NODE_TYPE(FIX_MIN),N)
CALL POP(NODE_REFCT(FIX_MIN),N)
CALL POP(NODE_REG(FIX_MIN),N)
CALL POP(FIXED_VAL(FIX_MIN),N*2)
ENDIF
CALL POP(NEXT_ATOM,1)
N=NEXT_ATOM-FIRST_FREE_ATOM
IF (N.GT.0) THEN
CALL POP(NODE_CONTEXT(FIRST_FREE_ATOM),N)
CALL POP(NODE_TYPE(FIRST_FREE_ATOM),N)
CALL POP(NODE_REFCT(FIRST_FREE_ATOM),N)
CALL POP(NODE_REG(FIRST_FREE_ATOM),N)
CALL POP(ATOM_SERIAL_NO(FIRST_FREE_ATOM),N)
CALL POP(ATOM_FLAGS(FIRST_FREE_ATOM),N)
CALL POP(ATOM_DISP(FIRST_FREE_ATOM),N*2)
CALL POP(ATOM_SUB(FIRST_FREE_ATOM),N)
CALL POP(ATOM_BASE(FIRST_FREE_ATOM),N)
CALL POP(ATOM_MEM(FIRST_FREE_ATOM),N)
CALL POP(ATOM_SYM(FIRST_FREE_ATOM),N)
ENDIF
CALL POP(NEXT_NODE,1)
N=NEXT_NODE-NODE_MIN
IF (N.GT.0) THEN
CALL POP(NODE_CONTEXT(NODE_MIN),N)
CALL POP(NODE_TYPE(NODE_MIN),N)
CALL POP(NODE_REFCT(NODE_MIN),N)
CALL POP(NODE_REG(NODE_MIN),N)
CALL POP(OPNODE_OPND2(NODE_MIN),N)
CALL POP(OPNODE_OPND1(NODE_MIN),N)
CALL POP(OPNODE_OP(NODE_MIN),N)
ENDIF
RETURN
END