/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Linux/PA-RISC Project (http://www.parisc-linux.org/) * * Floating-point emulation code * Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org> */ #ifdef __NO_PA_HDRS PA header file -- do not include this header file for non-PA builds. #endif /* * These macros are designed to be portable to all machines that have * a wordsize greater than or equal to 32 bits that support the portable * C compiler and the standard C preprocessor. Wordsize (default 32) * and bitfield assignment (default left-to-right, unlike VAX, PDP-11) * should be predefined using the constants HOSTWDSZ and BITFRL and * the C compiler "-D" flag (e.g., -DHOSTWDSZ=36 -DBITFLR for the DEC-20). * Note that the macro arguments assume that the integer being referenced * is a 32-bit integer (right-justified on the 20) and that bit 0 is the * most significant bit. */ #ifndef HOSTWDSZ #define HOSTWDSZ 32 #endif /*########################### Macros ######################################*/ /*------------------------------------------------------------------------- * NewDeclareBitField_Reference - Declare a structure similar to the simulator * function "DeclBitfR" except its use is restricted to occur within a larger * enclosing structure or union definition. This declaration is an unnamed * structure with the argument, name, as the member name and the argument, * uname, as the element name. *----------------------------------------------------------------------- */ #define Bitfield_extract(start, length, object) \ ((object) >> (HOSTWDSZ - (start) - (length)) & \ ((unsigned)-1 >> (HOSTWDSZ - (length)))) #define Bitfield_signed_extract(start, length, object) \ ((int)((object) << start) >> (HOSTWDSZ - (length))) #define Bitfield_mask(start, len, object) \ ((object) & (((unsigned)-1 >> (HOSTWDSZ-len)) << (HOSTWDSZ-start-len))) #define Bitfield_deposit(value,start,len,object) object = \ ((object) & ~(((unsigned)-1 >> (HOSTWDSZ-len)) << (HOSTWDSZ-start-len))) | \ (((value) & ((unsigned)-1 >> (HOSTWDSZ-len))) << (HOSTWDSZ-start-len))