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annotate mem.c @ 14:2bdad0f52f42

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x86 code gen, initial work on translator
author Mike Pavone <pavone@retrodev.com>
date Tue, 27 Nov 2012 09:28:13 -0800
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children 3e7bfde7606e
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2bdad0f52f42 x86 code gen, initial work on translator
Mike Pavone <pavone@retrodev.com>
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1 #include <sys/mman.h>
2bdad0f52f42 x86 code gen, initial work on translator
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2 #include <stddef.h>
2bdad0f52f42 x86 code gen, initial work on translator
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3 #include "mem.h"
2bdad0f52f42 x86 code gen, initial work on translator
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4
2bdad0f52f42 x86 code gen, initial work on translator
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5 void * alloc_code(size_t *size)
2bdad0f52f42 x86 code gen, initial work on translator
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6 {
2bdad0f52f42 x86 code gen, initial work on translator
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7 *size += PAGE_SIZE - (*size & (PAGE_SIZE - 1));
2bdad0f52f42 x86 code gen, initial work on translator
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8 return mmap(NULL, *size, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
2bdad0f52f42 x86 code gen, initial work on translator
Mike Pavone <pavone@retrodev.com>
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9 }
2bdad0f52f42 x86 code gen, initial work on translator
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10