diff options
Diffstat (limited to 'libgloss/mips/cfe_mem.c')
| -rw-r--r-- | libgloss/mips/cfe_mem.c | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/libgloss/mips/cfe_mem.c b/libgloss/mips/cfe_mem.c deleted file mode 100644 index 87caabf8c..000000000 --- a/libgloss/mips/cfe_mem.c +++ /dev/null @@ -1,130 +0,0 @@ -/* cfe_mem.c -- Replaceable memory management hooks for MIPS boards - running CFE. */ - -/* - * Copyright 2003 - * Broadcom Corporation. All rights reserved. - * - * This software is furnished under license and may be used and copied only - * in accordance with the following terms and conditions. Subject to these - * conditions, you may download, copy, install, use, modify and distribute - * modified or unmodified copies of this software in source and/or binary - * form. No title or ownership is transferred hereby. - * - * 1) Any source code used, modified or distributed must reproduce and - * retain this copyright notice and list of conditions as they appear in - * the source file. - * - * 2) No right is granted to use any trade name, trademark, or logo of - * Broadcom Corporation. The "Broadcom Corporation" name may not be - * used to endorse or promote products derived from this software - * without the prior written permission of Broadcom Corporation. - * - * 3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR - * NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL BROADCOM BE LIABLE - * FOR ANY DAMAGES WHATSOEVER, AND IN PARTICULAR, BROADCOM SHALL NOT BE - * LIABLE FOR DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - */ - -#include "cfe_api.h" - -/* Structure filled in by get_mem_info. Only the size field is - actually used (by sbrk), so the others aren't even filled in. - Note that 'size' is the __size__ of the heap starting at _end! */ -struct s_mem { - unsigned int size; - unsigned int icsize; - unsigned int dcsize; -}; - -void *get_mem_info (struct s_mem *); - -extern char _end[]; - -/* Address immediately after available memory. */ -static unsigned long memtop; - -/* Program stack size. */ -static unsigned long stack_size; - -void -__libcfe_meminit (void) -{ - /* If the user has provided a memory-limit function, use it to - determine the end of usable memory. */ - if (&__libcfe_mem_limit != NULL) - memtop = __libcfe_mem_limit (); - else - { - uint64_t start, length, type; - int i, rv; - long end_segbits, end_pa; - - /* Note that this only works if _end and the program live in kseg0 - or kseg1. Not a problem with the default linker script, but - if you're writing your own, keep it in mind. For more complex - memory allocation needs, you're encouraged to copy this file - and syscalls.c (for sbrk()), and reimplement as appropriate. */ - end_segbits = (long)_end & ~ 0x1fffffffL; - end_pa = (long)_end & 0x1fffffffL; - - for (i = 0; ; i++) - { - rv = cfe_enummem(i, 0, &start, &length, &type); - if (rv < 0) - { - /* Did not find an available entry containing _end. - Assume a minimal amount of memory (1MB). */ - memtop = _end + (1 * 1024 * 1024); - break; - } - - /* If not available, try the next. */ - if (type != CFE_MI_AVAILABLE) - continue; - - /* If end_pa is between start and (start + length) then we have - a winner. */ - if (end_pa >= start && end_pa < (start + length)) - { - memtop = (start + length) | end_segbits; - break; - } - } - } - - /* If the user has provided a memory-limit function, use it to - determine the end of usable memory. */ - if (&__libcfe_stack_size != NULL) - stack_size = __libcfe_stack_size (); - else - stack_size = (32 * 1024); /* Default = 32KB. */ - - /* Chop the top of memory to a 32-byte aligned location, and - round the stack size up to a 32-byte multiple. */ - memtop = memtop & ~(unsigned long)31; - stack_size = (stack_size + 31) & ~(unsigned long)31; -} - -void * -__libcfe_stack_top (void) -{ - /* Grow down from the top of available memory. Obviously, if - code writes above this limit, problems could result! */ - return (void *) memtop; -} - -/* For compatibility, get_mem_info returns the top of memory - (i.e., the stack address). Nothing actually uses that, - though. */ -void * -get_mem_info (struct s_mem *meminfo) -{ - meminfo->size = (char *)(memtop - stack_size) - _end; - return (void *) memtop; -} |