folkert/simh-testsetgenerator
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions 1

AltairZ80: fix out-of-bounds accesses (Coverity Scan)

Browse source
This commit is contained in:
Sergey Svishchev 2017-03-11 23:48:03 -08:00 • committed by Mark Pizzolato
parent ba527ab24a
commit e49f06dcc3
1 changed files with 4 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
AltairZ80/m68ksim.c
View file

@ -373,7 +373,7 @@ unsigned int m68k_cpu_read_word(unsigned int address) {
default:
break;
}
if (address > M68K_MAX_RAM) {
if (address > M68K_MAX_RAM-1) {
if (cpu_unit.flags & UNIT_CPU_VERBOSE)
sim_printf("M68K: 0x%08x Attempt to read word from non existing memory 0x%08x." NLP,
PCX, address);
@ -391,7 +391,7 @@ unsigned int m68k_cpu_read_long(unsigned int address) {
default:
break;
}
if (address > M68K_MAX_RAM) {
if (address > M68K_MAX_RAM-3) {
if (cpu_unit.flags & UNIT_CPU_VERBOSE)
sim_printf("M68K: 0x%08x Attempt to read long from non existing memory 0x%08x." NLP,
PCX, address);
@ -433,7 +433,7 @@ void m68k_cpu_write_byte(unsigned int address, unsigned int value) {
}
void m68k_cpu_write_word(unsigned int address, unsigned int value) {
if (address > M68K_MAX_RAM) {
if (address > M68K_MAX_RAM-1) {
if (cpu_unit.flags & UNIT_CPU_VERBOSE)
sim_printf("M68K: 0x%08x Attempt to write word 0x%04x to non existing memory 0x%08x." NLP,
PCX, value & 0xffff, address);
@ -483,7 +483,7 @@ void m68k_cpu_write_long(unsigned int address, unsigned int value) {
default:
break;
}
if (address > M68K_MAX_RAM) {
if (address > M68K_MAX_RAM-3) {
if (cpu_unit.flags & UNIT_CPU_VERBOSE)
sim_printf("M68K: 0x%08x Attempt to write long 0x%08x to non existing memory 0x%08x." NLP,
PCX, value, address);