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- 1.2
- date 90.07.17.15.42.30; author mendel; state Exp;
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- 1.1
- date 86.07.18.11.51.25; author nelson; state Exp;
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- 1.2
- log
- @*** empty log message ***
- @
- text
- @/*
- * mem.c --
- *
- * A simple (and small) memory allocator for the SCSI disk bootstrap
- * program.
- *
- * Copyright 1989 Regents of the University of California
- * Permission to use, copy, modify, and distribute this
- * software and its documentation for any purpose and without
- * fee is hereby granted, provided that the above copyright
- * notice appear in all copies. The University of California
- * makes no representations about the suitability of this
- * software for any purpose. It is provided "as is" without
- * express or implied warranty.
- */
-
- #ifdef notdef
- static char rcsid[] = "$Header: /sprite/lib/forms/RCS/proto.c,v 1.2 89/01/07 04:12:18 rab Exp $ SPRITE (Berkeley)";
- #endif /* not lint */
-
- #include "sprite.h"
- extern int end;
-
- static char *memEnd = (char *) &end;
-
- /*
- *----------------------------------------------------------------------
- *
- * malloc --
- *
- * Allocate a block of memory of the given size starting at the
- * current end of kernel memory.
- *
- * Results:
- * A pointer to the allocated memory
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
-
-
- char *
- malloc(numBytes)
- {
- char *addr;
-
- addr = memEnd;
-
- memEnd += (numBytes + 3) & ~3;
- bzero(addr, numBytes);
- return(addr);
- }
-
- void
- free(address)
- char *address;
- {
- return;
- }
- void
- _free(address)
- char *address;
- {
- return;
- }
-
-
- @
-
-
- 1.1
- log
- @Initial revision
- @
- text
- @d1 2
- a2 1
- /* mem.c -
- d4 11
- a14 4
- * This file contains a simple memory allocator.
- *
- * Copyright (C) 1985 Regents of the University of California
- * All rights reserved.
- d17 3
- a19 3
- #ifndef lint
- static char rcsid[] = "$Header: bootVm.c,v 1.1 86/07/16 17:12:02 brent Exp $ SPRITE (Berkeley)";
- #endif not lint
- d22 1
- a22 9
- #include "vmSunConst.h"
-
- extern int endBss; /* Defined in end.s */
-
- /*
- * Private storage for Mem_Alloc
- */
- static Address memEnd;
- static Boolean memInitialized = FALSE;
- d24 1
- d27 1
- a27 1
- * ----------------------------------------------------------------------------
- d29 1
- a29 1
- * Mem_Alloc --
- d35 1
- a35 1
- * A pointer to the allocated memory.
- d38 1
- a38 1
- * memEnd is incremented.
- d40 1
- a40 1
- * ----------------------------------------------------------------------------
- d43 4
- a46 2
- Address
- Mem_Alloc(numBytes)
- d48 1
- a48 6
- Address addr;
-
- if (!memInitialized) {
- memEnd = (Address) (((int) &endBss + 3) & ~3);
- memInitialized = TRUE;
- }
- d53 1
- a53 1
-
- d58 8
- a65 2
- Mem_Free(address)
- Address address;
- d69 2
- @
-