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annotate x86_backend.c @ 422:642b2f8aee32

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author Mike Pavone <pavone@retrodev.com>
date Tue, 25 Jun 2013 23:03:25 -0700
parents 7b8a49220e3b
children 140af5509ce7
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1 #include "x86_backend.h"
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2 #include <stdlib.h>
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3
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4 deferred_addr * defer_address(deferred_addr * old_head, uint32_t address, uint8_t *dest)
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5 {
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6 deferred_addr * new_head = malloc(sizeof(deferred_addr));
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7 new_head->next = old_head;
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8 new_head->address = address & 0xFFFFFF;
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9 new_head->dest = dest;
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10 return new_head;
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11 }
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13 void remove_deferred_until(deferred_addr **head_ptr, deferred_addr * remove_to)
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14 {
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15 for(deferred_addr *cur = *head_ptr; cur && cur != remove_to; cur = *head_ptr)
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16 {
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17 *head_ptr = cur->next;
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18 free(cur);
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19 }
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20 }
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22 void process_deferred(deferred_addr ** head_ptr, void * context, native_addr_func get_native)
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23 {
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24 deferred_addr * cur = *head_ptr;
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25 deferred_addr **last_next = head_ptr;
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26 while(cur)
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27 {
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28 uint8_t * native = get_native(context, cur->address);//get_native_address(opts->native_code_map, cur->address);
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29 if (native) {
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30 int32_t disp = native - (cur->dest + 4);
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31 uint8_t * out = cur->dest;
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32 *(out++) = disp;
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33 disp >>= 8;
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34 *(out++) = disp;
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35 disp >>= 8;
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36 *(out++) = disp;
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37 disp >>= 8;
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38 *out = disp;
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39 *last_next = cur->next;
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40 free(cur);
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41 cur = *last_next;
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42 } else {
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43 last_next = &(cur->next);
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44 cur = cur->next;
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45 }
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46 }
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47 }
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