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+/*
+ * Linux/PA-RISC Project (http://www.parisc-linux.org/)
+ *
+ * Floating-point emulation code
+ * Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+/*
+ * BEGIN_DESC
+ *
+ * File:
+ * @(#) pa/spmath/float.h $Revision: 1.1 $
+ *
+ * Purpose:
+ * <<please update with a synopis of the functionality provided by this file>>
+ *
+ * BE header: no
+ *
+ * Shipped: yes
+ * /usr/conf/pa/spmath/float.h
+ *
+ * END_DESC
+*/
+
+#ifdef __NO_PA_HDRS
+ PA header file -- do not include this header file for non-PA builds.
+#endif
+
+#include "fpbits.h"
+#include "hppa.h"
+/*
+ * Want to pick up the FPU capability flags, not the PDC structures.
+ * 'LOCORE' isn't really true in this case, but we don't want the C structures
+ * so it suits our purposes
+ */
+#define LOCORE
+#include "fpu.h"
+
+/*
+ * Declare the basic structures for the 3 different
+ * floating-point precisions.
+ *
+ * Single number
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * |s| exp | mantissa |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ */
+#define Sall(object) (object)
+#define Ssign(object) Bitfield_extract( 0, 1,object)
+#define Ssignedsign(object) Bitfield_signed_extract( 0, 1,object)
+#define Sexponent(object) Bitfield_extract( 1, 8,object)
+#define Smantissa(object) Bitfield_mask( 9, 23,object)
+#define Ssignaling(object) Bitfield_extract( 9, 1,object)
+#define Ssignalingnan(object) Bitfield_extract( 1, 9,object)
+#define Shigh2mantissa(object) Bitfield_extract( 9, 2,object)
+#define Sexponentmantissa(object) Bitfield_mask( 1, 31,object)
+#define Ssignexponent(object) Bitfield_extract( 0, 9,object)
+#define Shidden(object) Bitfield_extract( 8, 1,object)
+#define Shiddenoverflow(object) Bitfield_extract( 7, 1,object)
+#define Shiddenhigh7mantissa(object) Bitfield_extract( 8, 8,object)
+#define Shiddenhigh3mantissa(object) Bitfield_extract( 8, 4,object)
+#define Slow(object) Bitfield_mask( 31, 1,object)
+#define Slow4(object) Bitfield_mask( 28, 4,object)
+#define Slow31(object) Bitfield_mask( 1, 31,object)
+#define Shigh31(object) Bitfield_extract( 0, 31,object)
+#define Ssignedhigh31(object) Bitfield_signed_extract( 0, 31,object)
+#define Shigh4(object) Bitfield_extract( 0, 4,object)
+#define Sbit24(object) Bitfield_extract( 24, 1,object)
+#define Sbit28(object) Bitfield_extract( 28, 1,object)
+#define Sbit29(object) Bitfield_extract( 29, 1,object)
+#define Sbit30(object) Bitfield_extract( 30, 1,object)
+#define Sbit31(object) Bitfield_mask( 31, 1,object)
+
+#define Deposit_ssign(object,value) Bitfield_deposit(value,0,1,object)
+#define Deposit_sexponent(object,value) Bitfield_deposit(value,1,8,object)
+#define Deposit_smantissa(object,value) Bitfield_deposit(value,9,23,object)
+#define Deposit_shigh2mantissa(object,value) Bitfield_deposit(value,9,2,object)
+#define Deposit_sexponentmantissa(object,value) \
+ Bitfield_deposit(value,1,31,object)
+#define Deposit_ssignexponent(object,value) Bitfield_deposit(value,0,9,object)
+#define Deposit_slow(object,value) Bitfield_deposit(value,31,1,object)
+#define Deposit_shigh4(object,value) Bitfield_deposit(value,0,4,object)
+
+#define Is_ssign(object) Bitfield_mask( 0, 1,object)
+#define Is_ssignaling(object) Bitfield_mask( 9, 1,object)
+#define Is_shidden(object) Bitfield_mask( 8, 1,object)
+#define Is_shiddenoverflow(object) Bitfield_mask( 7, 1,object)
+#define Is_slow(object) Bitfield_mask( 31, 1,object)
+#define Is_sbit24(object) Bitfield_mask( 24, 1,object)
+#define Is_sbit28(object) Bitfield_mask( 28, 1,object)
+#define Is_sbit29(object) Bitfield_mask( 29, 1,object)
+#define Is_sbit30(object) Bitfield_mask( 30, 1,object)
+#define Is_sbit31(object) Bitfield_mask( 31, 1,object)
+
+/*
+ * Double number.
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * |s| exponent | mantissa part 1 |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ *
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * | mantissa part 2 |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ */
+#define Dallp1(object) (object)
+#define Dsign(object) Bitfield_extract( 0, 1,object)
+#define Dsignedsign(object) Bitfield_signed_extract( 0, 1,object)
+#define Dexponent(object) Bitfield_extract( 1, 11,object)
+#define Dmantissap1(object) Bitfield_mask( 12, 20,object)
+#define Dsignaling(object) Bitfield_extract( 12, 1,object)
+#define Dsignalingnan(object) Bitfield_extract( 1, 12,object)
+#define Dhigh2mantissa(object) Bitfield_extract( 12, 2,object)
+#define Dexponentmantissap1(object) Bitfield_mask( 1, 31,object)
+#define Dsignexponent(object) Bitfield_extract( 0, 12,object)
+#define Dhidden(object) Bitfield_extract( 11, 1,object)
+#define Dhiddenoverflow(object) Bitfield_extract( 10, 1,object)
+#define Dhiddenhigh7mantissa(object) Bitfield_extract( 11, 8,object)
+#define Dhiddenhigh3mantissa(object) Bitfield_extract( 11, 4,object)
+#define Dlowp1(object) Bitfield_mask( 31, 1,object)
+#define Dlow31p1(object) Bitfield_mask( 1, 31,object)
+#define Dhighp1(object) Bitfield_extract( 0, 1,object)
+#define Dhigh4p1(object) Bitfield_extract( 0, 4,object)
+#define Dhigh31p1(object) Bitfield_extract( 0, 31,object)
+#define Dsignedhigh31p1(object) Bitfield_signed_extract( 0, 31,object)
+#define Dbit3p1(object) Bitfield_extract( 3, 1,object)
+
+#define Deposit_dsign(object,value) Bitfield_deposit(value,0,1,object)
+#define Deposit_dexponent(object,value) Bitfield_deposit(value,1,11,object)
+#define Deposit_dmantissap1(object,value) Bitfield_deposit(value,12,20,object)
+#define Deposit_dhigh2mantissa(object,value) Bitfield_deposit(value,12,2,object)
+#define Deposit_dexponentmantissap1(object,value) \
+ Bitfield_deposit(value,1,31,object)
+#define Deposit_dsignexponent(object,value) Bitfield_deposit(value,0,12,object)
+#define Deposit_dlowp1(object,value) Bitfield_deposit(value,31,1,object)
+#define Deposit_dhigh4p1(object,value) Bitfield_deposit(value,0,4,object)
+
+#define Is_dsign(object) Bitfield_mask( 0, 1,object)
+#define Is_dsignaling(object) Bitfield_mask( 12, 1,object)
+#define Is_dhidden(object) Bitfield_mask( 11, 1,object)
+#define Is_dhiddenoverflow(object) Bitfield_mask( 10, 1,object)
+#define Is_dlowp1(object) Bitfield_mask( 31, 1,object)
+#define Is_dhighp1(object) Bitfield_mask( 0, 1,object)
+#define Is_dbit3p1(object) Bitfield_mask( 3, 1,object)
+
+#define Dallp2(object) (object)
+#define Dmantissap2(object) (object)
+#define Dlowp2(object) Bitfield_mask( 31, 1,object)
+#define Dlow4p2(object) Bitfield_mask( 28, 4,object)
+#define Dlow31p2(object) Bitfield_mask( 1, 31,object)
+#define Dhighp2(object) Bitfield_extract( 0, 1,object)
+#define Dhigh31p2(object) Bitfield_extract( 0, 31,object)
+#define Dbit2p2(object) Bitfield_extract( 2, 1,object)
+#define Dbit3p2(object) Bitfield_extract( 3, 1,object)
+#define Dbit21p2(object) Bitfield_extract( 21, 1,object)
+#define Dbit28p2(object) Bitfield_extract( 28, 1,object)
+#define Dbit29p2(object) Bitfield_extract( 29, 1,object)
+#define Dbit30p2(object) Bitfield_extract( 30, 1,object)
+#define Dbit31p2(object) Bitfield_mask( 31, 1,object)
+
+#define Deposit_dlowp2(object,value) Bitfield_deposit(value,31,1,object)
+
+#define Is_dlowp2(object) Bitfield_mask( 31, 1,object)
+#define Is_dhighp2(object) Bitfield_mask( 0, 1,object)
+#define Is_dbit2p2(object) Bitfield_mask( 2, 1,object)
+#define Is_dbit3p2(object) Bitfield_mask( 3, 1,object)
+#define Is_dbit21p2(object) Bitfield_mask( 21, 1,object)
+#define Is_dbit28p2(object) Bitfield_mask( 28, 1,object)
+#define Is_dbit29p2(object) Bitfield_mask( 29, 1,object)
+#define Is_dbit30p2(object) Bitfield_mask( 30, 1,object)
+#define Is_dbit31p2(object) Bitfield_mask( 31, 1,object)
+
+/*
+ * Quad number.
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * |s| exponent | mantissa part 1 |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ *
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * | mantissa part 2 |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ *
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * | mantissa part 3 |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ *
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * | mantissa part 4 |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ */
+typedef struct
+ {
+ union
+ {
+ struct { unsigned qallp1; } u_qallp1;
+/* Not needed for now...
+ Bitfield_extract( 0, 1,u_qsign,qsign)
+ Bitfield_signed_extract( 0, 1,u_qsignedsign,qsignedsign)
+ Bitfield_extract( 1, 15,u_qexponent,qexponent)
+ Bitfield_extract(16, 16,u_qmantissap1,qmantissap1)
+ Bitfield_extract(16, 1,u_qsignaling,qsignaling)
+ Bitfield_extract(1, 16,u_qsignalingnan,qsignalingnan)
+ Bitfield_extract(16, 2,u_qhigh2mantissa,qhigh2mantissa)
+ Bitfield_extract( 1, 31,u_qexponentmantissap1,qexponentmantissap1)
+ Bitfield_extract( 0, 16,u_qsignexponent,qsignexponent)
+ Bitfield_extract(15, 1,u_qhidden,qhidden)
+ Bitfield_extract(14, 1,u_qhiddenoverflow,qhiddenoverflow)
+ Bitfield_extract(15, 8,u_qhiddenhigh7mantissa,qhiddenhigh7mantissa)
+ Bitfield_extract(15, 4,u_qhiddenhigh3mantissa,qhiddenhigh3mantissa)
+ Bitfield_extract(31, 1,u_qlowp1,qlowp1)
+ Bitfield_extract( 1, 31,u_qlow31p1,qlow31p1)
+ Bitfield_extract( 0, 1,u_qhighp1,qhighp1)
+ Bitfield_extract( 0, 4,u_qhigh4p1,qhigh4p1)
+ Bitfield_extract( 0, 31,u_qhigh31p1,qhigh31p1)
+ */
+ } quad_u1;
+ union
+ {
+ struct { unsigned qallp2; } u_qallp2;
+ /* Not needed for now...
+ Bitfield_extract(31, 1,u_qlowp2,qlowp2)
+ Bitfield_extract( 1, 31,u_qlow31p2,qlow31p2)
+ Bitfield_extract( 0, 1,u_qhighp2,qhighp2)
+ Bitfield_extract( 0, 31,u_qhigh31p2,qhigh31p2)
+ */
+ } quad_u2;
+ union
+ {
+ struct { unsigned qallp3; } u_qallp3;
+ /* Not needed for now...
+ Bitfield_extract(31, 1,u_qlowp3,qlowp3)
+ Bitfield_extract( 1, 31,u_qlow31p3,qlow31p3)
+ Bitfield_extract( 0, 1,u_qhighp3,qhighp3)
+ Bitfield_extract( 0, 31,u_qhigh31p3,qhigh31p3)
+ */
+ } quad_u3;
+ union
+ {
+ struct { unsigned qallp4; } u_qallp4;
+ /* Not need for now...
+ Bitfield_extract(31, 1,u_qlowp4,qlowp4)
+ Bitfield_extract( 1, 31,u_qlow31p4,qlow31p4)
+ Bitfield_extract( 0, 1,u_qhighp4,qhighp4)
+ Bitfield_extract( 0, 31,u_qhigh31p4,qhigh31p4)
+ */
+ } quad_u4;
+ } quad_floating_point;
+
+/* Extension - An additional structure to hold the guard, round and
+ * sticky bits during computations.
+ */
+#define Extall(object) (object)
+#define Extsign(object) Bitfield_extract( 0, 1,object)
+#define Exthigh31(object) Bitfield_extract( 0, 31,object)
+#define Extlow31(object) Bitfield_extract( 1, 31,object)
+#define Extlow(object) Bitfield_extract( 31, 1,object)
+
+/*
+ * Single extended - The upper word is just like single precision,
+ * but one additional word of mantissa is needed.
+ */
+#define Sextallp1(object) (object)
+#define Sextallp2(object) (object)
+#define Sextlowp1(object) Bitfield_extract( 31, 1,object)
+#define Sexthighp2(object) Bitfield_extract( 0, 1,object)
+#define Sextlow31p2(object) Bitfield_extract( 1, 31,object)
+#define Sexthiddenoverflow(object) Bitfield_extract( 4, 1,object)
+#define Is_sexthiddenoverflow(object) Bitfield_mask( 4, 1,object)
+
+/*
+ * Double extended - The upper two words are just like double precision,
+ * but two additional words of mantissa are needed.
+ */
+#define Dextallp1(object) (object)
+#define Dextallp2(object) (object)
+#define Dextallp3(object) (object)
+#define Dextallp4(object) (object)
+#define Dextlowp2(object) Bitfield_extract( 31, 1,object)
+#define Dexthighp3(object) Bitfield_extract( 0, 1,object)
+#define Dextlow31p3(object) Bitfield_extract( 1, 31,object)
+#define Dexthiddenoverflow(object) Bitfield_extract( 10, 1,object)
+#define Is_dexthiddenoverflow(object) Bitfield_mask( 10, 1,object)
+#define Deposit_dextlowp4(object,value) Bitfield_deposit(value,31,1,object)
+
+/*
+ * Declare the basic structures for the 3 different
+ * fixed-point precisions.
+ *
+ * Single number
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * |s| integer |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ */
+typedef int sgl_integer;
+
+/*
+ * Double number.
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * |s| high integer |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ *
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * | low integer |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ */
+struct dint {
+ int wd0;
+ unsigned int wd1;
+};
+
+struct dblwd {
+ unsigned int wd0;
+ unsigned int wd1;
+};
+
+/*
+ * Quad number.
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * |s| integer part1 |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ *
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * | integer part 2 |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ *
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * | integer part 3 |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ *
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * | integer part 4 |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ */
+
+struct quadwd {
+ int wd0;
+ unsigned int wd1;
+ unsigned int wd2;
+ unsigned int wd3;
+};
+
+typedef struct quadwd quad_integer;
+
+
+/* useful typedefs */
+typedef unsigned int sgl_floating_point;
+typedef struct dblwd dbl_floating_point;
+typedef struct dint dbl_integer;
+typedef struct dblwd dbl_unsigned;
+
+/*
+ * Define the different precisions' parameters.
+ */
+#define SGL_BITLENGTH 32
+#define SGL_EMAX 127
+#define SGL_EMIN (-126)
+#define SGL_BIAS 127
+#define SGL_WRAP 192
+#define SGL_INFINITY_EXPONENT (SGL_EMAX+SGL_BIAS+1)
+#define SGL_THRESHOLD 32
+#define SGL_EXP_LENGTH 8
+#define SGL_P 24
+
+#define DBL_BITLENGTH 64
+#define DBL_EMAX 1023
+#define DBL_EMIN (-1022)
+#define DBL_BIAS 1023
+#define DBL_WRAP 1536
+#define DBL_INFINITY_EXPONENT (DBL_EMAX+DBL_BIAS+1)
+#define DBL_THRESHOLD 64
+#define DBL_EXP_LENGTH 11
+#define DBL_P 53
+
+#define QUAD_BITLENGTH 128
+#define QUAD_EMAX 16383
+#define QUAD_EMIN (-16382)
+#define QUAD_BIAS 16383
+#define QUAD_WRAP 24576
+#define QUAD_INFINITY_EXPONENT (QUAD_EMAX+QUAD_BIAS+1)
+#define QUAD_P 113
+
+/* Boolean Values etc. */
+#define FALSE 0
+#define TRUE (!FALSE)
+#define NOT !
+#define XOR ^
+
+/* other constants */
+#undef NULL
+#define NULL 0
+#define NIL 0
+#define SGL 0
+#define DBL 1
+#define BADFMT 2
+#define QUAD 3
+
+
+/* Types */
+typedef int boolean;
+typedef int FORMAT;
+typedef int VOID;
+
+
+/* Declare status register equivalent to FPUs architecture.
+ *
+ * 0 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 920 1 2 3 4 5 6 7 8 930 1
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * |V|Z|O|U|I|C| rsv | model | version |RM |rsv|T|r|V|Z|O|U|I|
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ */
+#define Cbit(object) Bitfield_extract( 5, 1,object)
+#define Tbit(object) Bitfield_extract( 25, 1,object)
+#define Roundingmode(object) Bitfield_extract( 21, 2,object)
+#define Invalidtrap(object) Bitfield_extract( 27, 1,object)
+#define Divisionbyzerotrap(object) Bitfield_extract( 28, 1,object)
+#define Overflowtrap(object) Bitfield_extract( 29, 1,object)
+#define Underflowtrap(object) Bitfield_extract( 30, 1,object)
+#define Inexacttrap(object) Bitfield_extract( 31, 1,object)
+#define Invalidflag(object) Bitfield_extract( 0, 1,object)
+#define Divisionbyzeroflag(object) Bitfield_extract( 1, 1,object)
+#define Overflowflag(object) Bitfield_extract( 2, 1,object)
+#define Underflowflag(object) Bitfield_extract( 3, 1,object)
+#define Inexactflag(object) Bitfield_extract( 4, 1,object)
+#define Allflags(object) Bitfield_extract( 0, 5,object)
+
+/* Definitions relevant to the status register */
+
+/* Rounding Modes */
+#define ROUNDNEAREST 0
+#define ROUNDZERO 1
+#define ROUNDPLUS 2
+#define ROUNDMINUS 3
+
+/* Exceptions */
+#define NOEXCEPTION 0x0
+#define INVALIDEXCEPTION 0x20
+#define DIVISIONBYZEROEXCEPTION 0x10
+#define OVERFLOWEXCEPTION 0x08
+#define UNDERFLOWEXCEPTION 0x04
+#define INEXACTEXCEPTION 0x02
+#define UNIMPLEMENTEDEXCEPTION 0x01
+
+/* New exceptions for the 2E Opcode */
+#define OPC_2E_INVALIDEXCEPTION 0x30
+#define OPC_2E_OVERFLOWEXCEPTION 0x18
+#define OPC_2E_UNDERFLOWEXCEPTION 0x0c
+#define OPC_2E_INEXACTEXCEPTION 0x12
+
+/* Declare exception registers equivalent to FPUs architecture
+ *
+ * 0 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 920 1 2 3 4 5 6 7 8 930 1
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * |excepttype | r1 | r2/ext | operation |parm |n| t/cond |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ */
+#define Allexception(object) (object)
+#define Exceptiontype(object) Bitfield_extract( 0, 6,object)
+#define Instructionfield(object) Bitfield_mask( 6,26,object)
+#define Parmfield(object) Bitfield_extract( 23, 3,object)
+#define Rabit(object) Bitfield_extract( 24, 1,object)
+#define Ibit(object) Bitfield_extract( 25, 1,object)
+
+#define Set_exceptiontype(object,value) Bitfield_deposit(value, 0, 6,object)
+#define Set_parmfield(object,value) Bitfield_deposit(value, 23, 3,object)
+#define Set_exceptiontype_and_instr_field(exception,instruction,object) \
+ object = exception << 26 | instruction
+
+/* Declare the condition field
+ *
+ * 0 1 2 3 4 5 6 7 8 910 1 2 3 4 5 6 7 8 920 1 2 3 4 5 6 7 8 930 1
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * | |G|L|E|U|X|
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ */
+#define Allexception(object) (object)
+#define Greaterthanbit(object) Bitfield_extract( 27, 1,object)
+#define Lessthanbit(object) Bitfield_extract( 28, 1,object)
+#define Equalbit(object) Bitfield_extract( 29, 1,object)
+#define Unorderedbit(object) Bitfield_extract( 30, 1,object)
+#define Exceptionbit(object) Bitfield_extract( 31, 1,object)
+
+/* An alias name for the status register */
+#define Fpustatus_register (*status)
+
+/**************************************************
+ * Status register referencing and manipulation. *
+ **************************************************/
+
+/* Rounding mode */
+#define Rounding_mode() Roundingmode(Fpustatus_register)
+#define Is_rounding_mode(rmode) \
+ (Roundingmode(Fpustatus_register) == rmode)
+#define Set_rounding_mode(value) \
+ Bitfield_deposit(value,21,2,Fpustatus_register)
+
+/* Boolean testing of the trap enable bits */
+#define Is_invalidtrap_enabled() Invalidtrap(Fpustatus_register)
+#define Is_divisionbyzerotrap_enabled() Divisionbyzerotrap(Fpustatus_register)
+#define Is_overflowtrap_enabled() Overflowtrap(Fpustatus_register)
+#define Is_underflowtrap_enabled() Underflowtrap(Fpustatus_register)
+#define Is_inexacttrap_enabled() Inexacttrap(Fpustatus_register)
+
+/* Set the indicated flags in the status register */
+#define Set_invalidflag() Bitfield_deposit(1,0,1,Fpustatus_register)
+#define Set_divisionbyzeroflag() Bitfield_deposit(1,1,1,Fpustatus_register)
+#define Set_overflowflag() Bitfield_deposit(1,2,1,Fpustatus_register)
+#define Set_underflowflag() Bitfield_deposit(1,3,1,Fpustatus_register)
+#define Set_inexactflag() Bitfield_deposit(1,4,1,Fpustatus_register)
+
+#define Clear_all_flags() Bitfield_deposit(0,0,5,Fpustatus_register)
+
+/* Manipulate the trap and condition code bits (tbit and cbit) */
+#define Set_tbit() Bitfield_deposit(1,25,1,Fpustatus_register)
+#define Clear_tbit() Bitfield_deposit(0,25,1,Fpustatus_register)
+#define Is_tbit_set() Tbit(Fpustatus_register)
+#define Is_cbit_set() Cbit(Fpustatus_register)
+
+#define Set_status_cbit(value) \
+ Bitfield_deposit(value,5,1,Fpustatus_register)
+
+/*******************************
+ * Condition field referencing *
+ *******************************/
+#define Unordered(cond) Unorderedbit(cond)
+#define Equal(cond) Equalbit(cond)
+#define Lessthan(cond) Lessthanbit(cond)
+#define Greaterthan(cond) Greaterthanbit(cond)
+#define Exception(cond) Exceptionbit(cond)
+
+
+/* Defines for the extension */
+#define Ext_isone_sign(extent) (Extsign(extent))
+#define Ext_isnotzero(extent) \
+ (Extall(extent))
+#define Ext_isnotzero_lower(extent) \
+ (Extlow31(extent))
+#define Ext_leftshiftby1(extent) \
+ Extall(extent) <<= 1
+#define Ext_negate(extent) \
+ (int )Extall(extent) = 0 - (int )Extall(extent)
+#define Ext_setone_low(extent) Bitfield_deposit(1,31,1,extent)
+#define Ext_setzero(extent) Extall(extent) = 0
+
+typedef int operation;
+
+/* error messages */
+
+#define NONE 0
+#define UNDEFFPINST 1
+
+/* Function definitions: opcode, opclass */
+#define FTEST (1<<2) | 0
+#define FCPY (2<<2) | 0
+#define FABS (3<<2) | 0
+#define FSQRT (4<<2) | 0
+#define FRND (5<<2) | 0
+
+#define FCNVFF (0<<2) | 1
+#define FCNVXF (1<<2) | 1
+#define FCNVFX (2<<2) | 1
+#define FCNVFXT (3<<2) | 1
+
+#define FCMP (0<<2) | 2
+
+#define FADD (0<<2) | 3
+#define FSUB (1<<2) | 3
+#define FMPY (2<<2) | 3
+#define FDIV (3<<2) | 3
+#define FREM (4<<2) | 3
+
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-22 21:30:29 +0000