mirror of
https://github.com/fail0verflow/switch-coreboot.git
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791e590dea
* fix malloc.c warnings * add PCI_BUS_SEGN_BITS to pci.h Signed-off-by: Stefan Reinauer <stepan@coresystems.de> Acked-by: Ronald G. Minnich <rminnich@gmail.com> git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@92 f3766cd6-281f-0410-b1cd-43a5c92072e9
81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
/*
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* malloc -- simple non-freeing malloc.
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*
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*
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* Author unkown. I guess we need a 'tomb of the unknown coder'.
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*
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*/
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#include <stdlib.h>
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#include <console/console.h>
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#if 0
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#define MALLOCDBG(x...)
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#else
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#define MALLOCDBG(x...) printk (BIOS_SPEW, x)
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#endif
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/* instead of ldscript magic, just declare an array. The array
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* will consume no bytes in the image. And it won't run into trouble
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* the way the V2 allocator could.
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*/
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#define HEAPSIZE (256*1024)
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static unsigned char heap[HEAPSIZE];
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static size_t free_mem_ptr = (size_t)&heap; /* Start of heap */
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static size_t free_mem_end_ptr = (size_t)&heap[HEAPSIZE];
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/* to keep gcc etc. happy ... */
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typedef size_t malloc_mark_t;
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void malloc_mark(malloc_mark_t *place)
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{
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*place = free_mem_ptr;
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printk(BIOS_SPEW, "malloc_mark 0x%08lx\n", (unsigned long)free_mem_ptr);
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}
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void malloc_release(malloc_mark_t *ptr)
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{
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free_mem_ptr = *ptr;
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printk(BIOS_SPEW, "malloc_release 0x%08lx\n", (unsigned long)free_mem_ptr);
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}
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void *malloc(size_t size)
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{
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void *p;
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MALLOCDBG("%s Enter, size %d, free_mem_ptr %p\n", __FUNCTION__, size, free_mem_ptr);
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if (size < 0)
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die("Error! malloc: Size < 0");
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if (free_mem_ptr <= 0)
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die("Error! malloc: Free_mem_ptr <= 0");
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free_mem_ptr = (free_mem_ptr + 3) & ~3; /* Align */
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p = (void *) free_mem_ptr;
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free_mem_ptr += size;
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if (free_mem_ptr >= free_mem_end_ptr)
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die("Error! malloc: free_mem_ptr >= free_mem_end_ptr");
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MALLOCDBG("malloc 0x%08lx\n", (unsigned long)p);
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return p;
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}
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void free(void *where)
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{
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/* Don't care */
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}
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