2fe8fb192f
There is important information about booting non-ack images in docs/UPDATING. ack/aout-format images can't be built any more, and booting clang/ELF-format ones is a little different. Updating to the new boot monitor is recommended. Changes in this commit: . drop boot monitor -> allowing dropping ack support . facility to copy ELF boot files to /boot so that old boot monitor can still boot fairly easily, see UPDATING . no more ack-format libraries -> single-case libraries . some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases . drop several ack toolchain commands, but not all support commands (e.g. aal is gone but acksize is not yet). . a few libc files moved to netbsd libc dir . new /bin/date as minix date used code in libc/ . test compile fix . harmonize includes . /usr/lib is no longer special: without ack, /usr/lib plays no kind of special bootstrapping role any more and bootstrapping is done exclusively through packages, so releases depend even less on the state of the machine making them now. . rename nbsd_lib* to lib* . reduce mtree
35 lines
1.1 KiB
C
35 lines
1.1 KiB
C
#ifndef _BITMAP_H
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#define _BITMAP_H
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/* Bit map operations to manipulate bits of a simple mask variable. */
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#define bit_set(mask, n) ((mask) |= (1 << (n)))
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#define bit_unset(mask, n) ((mask) &= ~(1 << (n)))
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#define bit_isset(mask, n) ((mask) & (1 << (n)))
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#define bit_empty(mask) ((mask) = 0)
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#define bit_fill(mask) ((mask) = ~0)
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/* Definitions previously in kernel/const.h */
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#define BITCHUNK_BITS (sizeof(bitchunk_t) * CHAR_BIT)
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#define BITMAP_CHUNKS(nr_bits) (((nr_bits)+BITCHUNK_BITS-1)/BITCHUNK_BITS)
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#define MAP_CHUNK(map,bit) (map)[((bit)/BITCHUNK_BITS)]
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#define CHUNK_OFFSET(bit) ((bit)%BITCHUNK_BITS)
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#define GET_BIT(map,bit) ( MAP_CHUNK(map,bit) & (1 << CHUNK_OFFSET(bit) ))
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#define SET_BIT(map,bit) ( MAP_CHUNK(map,bit) |= (1 << CHUNK_OFFSET(bit) ))
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#define UNSET_BIT(map,bit) ( MAP_CHUNK(map,bit) &= ~(1 << CHUNK_OFFSET(bit) ))
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#if defined(CONFIG_SMP) && defined(__GNUC__)
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#ifndef __ASSEMBLY__
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static inline bits_fill(bitchunk_t * chunks, unsigned bits)
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{
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unsigned c, cnt;
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cnt = BITMAP_CHUNKS(bits);
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for (c = 0; c < cnt; c++)
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bit_fill(chunks[c]);
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}
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#endif
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#endif
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#endif /* _BITMAP_H */
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