From f439d8688758710b74d4909e77ebce6444b8a448 Mon Sep 17 00:00:00 2001 From: Michael Pavone Date: Wed, 14 Jan 2015 09:38:54 -0800 Subject: Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM --- backend.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'backend.c') diff --git a/backend.c b/backend.c index 8f65f25..1f9e718 100644 --- a/backend.c +++ b/backend.c @@ -72,3 +72,28 @@ void * get_native_pointer(uint32_t address, void ** mem_pointers, cpu_options * } return NULL; } + +uint32_t chunk_size(cpu_options *opts, memmap_chunk const *chunk) +{ + if (chunk->mask == opts->address_mask) { + return chunk->end - chunk->start; + } else { + return chunk->mask + 1; + } +} + +uint32_t ram_size(cpu_options *opts) +{ + uint32_t size = 0; + for (int i = 0; i < opts->memmap_chunks; i++) + { + if ((opts->memmap[i].flags & (MMAP_WRITE | MMAP_CODE)) == (MMAP_WRITE | MMAP_CODE)) { + if (opts->memmap[i].mask == opts->address_mask) { + size += opts->memmap[i].end - opts->memmap[i].start; + } else { + size += opts->memmap[i].mask + 1; + } + } + } + return size; +} -- cgit v1.2.3