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changeset 725:a92ca6f0ed83

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Fix out of bounds memory access when an instruction wraps around the end of memory
author Michael Pavone <pavone@retrodev.com>
date Fri, 22 May 2015 21:11:41 -0700
parents 2174f92c5f9b
children 7367b14ac01c
files m68k_core.c
diffstat 1 files changed, 1 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/m68k_core.c	Fri May 22 18:38:44 2015 -0700
+++ b/m68k_core.c	Fri May 22 21:11:41 2015 -0700
@@ -636,6 +636,7 @@
 	uint32_t offset = address % NATIVE_CHUNK_SIZE;
 	native_code_map[chunk].offsets[offset] = native_addr-native_code_map[chunk].base;
 	for(address++,size-=2; size; address++,size-=2) {
+		address &= opts->gen.address_mask >> 1;
 		chunk = address / NATIVE_CHUNK_SIZE;
 		offset = address % NATIVE_CHUNK_SIZE;
 		if (!native_code_map[chunk].base) {