diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/parisc/math-emu/fpbits.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/parisc/math-emu/fpbits.h')
-rw-r--r-- | arch/parisc/math-emu/fpbits.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/arch/parisc/math-emu/fpbits.h b/arch/parisc/math-emu/fpbits.h new file mode 100644 index 000000000000..cefad064d74a --- /dev/null +++ b/arch/parisc/math-emu/fpbits.h | |||
@@ -0,0 +1,65 @@ | |||
1 | /* | ||
2 | * Linux/PA-RISC Project (http://www.parisc-linux.org/) | ||
3 | * | ||
4 | * Floating-point emulation code | ||
5 | * Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org> | ||
6 | * | ||
7 | * This program is free software; you can redistribute it and/or modify | ||
8 | * it under the terms of the GNU General Public License as published by | ||
9 | * the Free Software Foundation; either version 2, or (at your option) | ||
10 | * any later version. | ||
11 | * | ||
12 | * This program is distributed in the hope that it will be useful, | ||
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
15 | * GNU General Public License for more details. | ||
16 | * | ||
17 | * You should have received a copy of the GNU General Public License | ||
18 | * along with this program; if not, write to the Free Software | ||
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
20 | */ | ||
21 | |||
22 | #ifdef __NO_PA_HDRS | ||
23 | PA header file -- do not include this header file for non-PA builds. | ||
24 | #endif | ||
25 | |||
26 | |||
27 | /* | ||
28 | * These macros are designed to be portable to all machines that have | ||
29 | * a wordsize greater than or equal to 32 bits that support the portable | ||
30 | * C compiler and the standard C preprocessor. Wordsize (default 32) | ||
31 | * and bitfield assignment (default left-to-right, unlike VAX, PDP-11) | ||
32 | * should be predefined using the constants HOSTWDSZ and BITFRL and | ||
33 | * the C compiler "-D" flag (e.g., -DHOSTWDSZ=36 -DBITFLR for the DEC-20). | ||
34 | * Note that the macro arguments assume that the integer being referenced | ||
35 | * is a 32-bit integer (right-justified on the 20) and that bit 0 is the | ||
36 | * most significant bit. | ||
37 | */ | ||
38 | |||
39 | #ifndef HOSTWDSZ | ||
40 | #define HOSTWDSZ 32 | ||
41 | #endif | ||
42 | |||
43 | |||
44 | /*########################### Macros ######################################*/ | ||
45 | |||
46 | /*------------------------------------------------------------------------- | ||
47 | * NewDeclareBitField_Reference - Declare a structure similar to the simulator | ||
48 | * function "DeclBitfR" except its use is restricted to occur within a larger | ||
49 | * enclosing structure or union definition. This declaration is an unnamed | ||
50 | * structure with the argument, name, as the member name and the argument, | ||
51 | * uname, as the element name. | ||
52 | *----------------------------------------------------------------------- */ | ||
53 | #define Bitfield_extract(start, length, object) \ | ||
54 | ((object) >> (HOSTWDSZ - (start) - (length)) & \ | ||
55 | ((unsigned)-1 >> (HOSTWDSZ - (length)))) | ||
56 | |||
57 | #define Bitfield_signed_extract(start, length, object) \ | ||
58 | ((int)((object) << start) >> (HOSTWDSZ - (length))) | ||
59 | |||
60 | #define Bitfield_mask(start, len, object) \ | ||
61 | ((object) & (((unsigned)-1 >> (HOSTWDSZ-len)) << (HOSTWDSZ-start-len))) | ||
62 | |||
63 | #define Bitfield_deposit(value,start,len,object) object = \ | ||
64 | ((object) & ~(((unsigned)-1 >> (HOSTWDSZ-len)) << (HOSTWDSZ-start-len))) | \ | ||
65 | (((value) & ((unsigned)-1 >> (HOSTWDSZ-len))) << (HOSTWDSZ-start-len)) | ||