6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-10-01 13:58:20 +00:00
Code Issues Projects Releases Wiki Activity

Tweak more overtly to avoid divide by zero.

Browse Source
This commit is contained in:
Thomas Harte 2022-05-29 20:51:50 -04:00
parent 9eea471e72
commit 7788a109b0
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
InstructionSets/M68k/Implementation/PerformImplementation.hpp
View File

@ -522,7 +522,8 @@ template <
#define DIV(Type16, Type32, flow_function) { \ #define DIV(Type16, Type32, flow_function) { \
status.carry_flag = 0; \ status.carry_flag = 0; \
\ \
if(!src.w) { \ const auto divisor = Type32(Type16(src.w)); \
if(!divisor) { \
status.negative_flag = status.overflow_flag = 0; \ status.negative_flag = status.overflow_flag = 0; \
status.zero_result = 1; \ status.zero_result = 1; \
flow_controller.raise_exception(Exception::IntegerDivideByZero); \ flow_controller.raise_exception(Exception::IntegerDivideByZero); \
@ -530,7 +531,6 @@ template <
} \ } \
\ \
const auto dividend = Type32(dest.l); \ const auto dividend = Type32(dest.l); \
const auto divisor = Type32(Type16(src.w)); \
const auto quotient = dividend / divisor; \ const auto quotient = dividend / divisor; \
\ \
if(quotient != Type32(Type16(quotient))) { \ if(quotient != Type32(Type16(quotient))) { \