e44595d970
option USE_DOC_MIL=1 now, not just option USE_DOC_MIL The latter usage led to empty streams struct. This is a real problem, though: you can no streams for reading and the linker will happily create an empty streams structure. Which sucks, since you don't know why your system won't boot.
53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
#include <stdlib.h>
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#include <printk.h>
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#include <subr.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_spew x
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#endif
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extern unsigned char _heap, _eheap;
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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)&_eheap; /* End of heap */
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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_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_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((__FUNCTION__ " Enter, size %d, free_mem_ptr %p\n", size, free_mem_ptr));
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if (size < 0)
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error("Error! malloc: Size < 0");
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if (free_mem_ptr <= 0)
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error("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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error("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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