| 1 | /*************************************************************************** |
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| 2 | * Copyright (c) 2007, Broadcom Corporation |
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| 3 | * All Rights Reserved |
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| 4 | * Confidential Property of Broadcom Corporation |
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| 5 | * |
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| 6 | * THIS SOFTWARE MAY ONLY BE USED SUBJECT TO AN EXECUTED SOFTWARE LICENSE |
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| 7 | * AGREEMENT BETWEEN THE USER AND BROADCOM. YOU HAVE NO RIGHT TO USE OR |
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| 8 | * EXPLOIT THIS MATERIAL EXCEPT SUBJECT TO THE TERMS OF SUCH AN AGREEMENT. |
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| 9 | * |
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| 10 | * $brcm_Workfile: blifo.h $ |
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| 11 | * $brcm_Revision: 2 $ |
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| 12 | * $brcm_Date: 9/5/07 2:50p $ |
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| 13 | * |
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| 14 | * Module Description: |
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| 15 | * |
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| 16 | * Utility to LIFO (e.g. stack) |
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| 17 | * |
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| 18 | * Revision History: |
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| 19 | * |
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| 20 | * $brcm_Log: /BSEAV/lib/utils/blifo.h $ |
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| 21 | * |
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| 22 | * 2 9/5/07 2:50p vsilyaev |
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| 23 | * PR 34419: Fixed warnings |
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| 24 | * |
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| 25 | * 1 8/17/07 3:38p vsilyaev |
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| 26 | * PR 33812: LIFO container |
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| 27 | * |
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| 28 | *******************************************************************************/ |
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| 29 | #ifndef BLIFO_H__ |
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| 30 | #define BLIFO_H__ |
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| 31 | |
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| 32 | #define BLIFO_HEAD(name, type) struct name { type *bl_base; type *bl_last; type *bl_write; } |
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| 33 | |
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| 34 | #define BLIFO_INIT(lifo, base, size) do { (lifo)->bl_base=(lifo)->bl_write=(base);\ |
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| 35 | (lifo)->bl_last=(lifo)->bl_base+(size);}while(0) |
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| 36 | |
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| 37 | #define BLIFO_WRITE(lifo) ((lifo)->bl_write) |
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| 38 | #define BLIFO_READ(lifo) ((lifo)->bl_write-1) |
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| 39 | |
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| 40 | #define BLIFO_WRITE_PEEK(lifo) ((lifo)->bl_last - (lifo)->bl_write) |
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| 41 | #define BLIFO_READ_PEEK(lifo) ((lifo)->bl_write - (lifo)->bl_base) |
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| 42 | #define BLIFO_WRITE_COMMIT(lifo, size) do { \ |
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| 43 | BDBG_ASSERT((size)>0 && BLIFO_WRITE_PEEK(lifo) >= (size)); \ |
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| 44 | (lifo)->bl_write += (size); \ |
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| 45 | } while(0) |
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| 46 | |
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| 47 | #define BLIFO_READ_COMMIT(lifo, size) do { \ |
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| 48 | BDBG_ASSERT((size)>0 && BLIFO_READ_PEEK(lifo) >= (size)); \ |
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| 49 | (lifo)->bl_write -= (size); \ |
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| 50 | } while(0) |
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| 51 | |
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| 52 | #define BLIFO_WRITE_LEFT(lifo) BLIFO_WRITE_PEEK(lifo) |
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| 53 | |
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| 54 | #define BLIFO_READ_LEFT(lifo) BLIFO_READ_PEEK(lifo) |
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| 55 | #define BLIFO_VALIDATE(lifo) do { \ |
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| 56 | BDBG_ASSERT((lifo)->bl_write>=(lifo)->bl_base && (lifo)->bl_write<=(lifo)->bl_last); \ |
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| 57 | } while(0) |
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| 58 | |
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| 59 | #define BLIFO_STATUS(DBG, header,lifo) DBG((header ":(%#lx:%#lx) write (%u/%#lx), read (%u/%#lx)", (unsigned long)(lifo)->bl_base, (unsigned long)(lifo)->bl_last, BLIFO_WRITE_PEEK(lifo), (unsigned long)BLIFO_WRITE(lifo), BLIFO_READ_PEEK(lifo), (unsigned long)BLIFO_READ(lifo))) |
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| 60 | |
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| 61 | |
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| 62 | #endif /* BLIFO_H__ */ |
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