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comparison backend.c @ 653:a18e3923481e

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Remove some of the hard coded assumptions about the memory map from the CPU cores
author Michael Pavone <pavone@retrodev.com>
date Thu, 01 Jan 2015 14:36:55 -0800
parents dc9f178085a0
children 98927f1b005b
comparison
equal deleted inserted replaced
652:f822d9216968 653:a18e3923481e
49 cur = cur->next; 49 cur = cur->next;
50 } 50 }
51 } 51 }
52 } 52 }
53 53
54 void * get_native_pointer(uint32_t address, void ** mem_pointers, cpu_options * opts)
55 {
56 memmap_chunk * memmap = opts->memmap;
57 address &= opts->address_mask;
58 for (uint32_t chunk = 0; chunk < opts->memmap_chunks; chunk++)
59 {
60 if (address >= memmap[chunk].start && address < memmap[chunk].end) {
61 if (!(memmap[chunk].flags & MMAP_READ)) {
62 return NULL;
63 }
64 uint8_t * base = memmap[chunk].flags & MMAP_PTR_IDX
65 ? mem_pointers[memmap[chunk].ptr_index]
66 : memmap[chunk].buffer;
67 if (!base) {
68 return NULL;
69 }
70 return base + (address & memmap[chunk].mask);
71 }
72 }
73 return NULL;
74 }