Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-22 16:31:49 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

m68k chk2cmp2: more consistent sign check (nw)

Browse Source
This commit is contained in:
hap 2018-10-26 20:28:41 +02:00
parent 449e0f88eb
commit ca4df126d7
1 changed files with 9 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
src/devices/cpu/m68000/m68k_in.cpp
View File

@ -3599,7 +3599,7 @@ M68KMAKE_OP(chk2cmp2, 8, ., pcdi)
int32_t upper_bound = m68ki_read_pcrel_8(ea + 1);
// for signed compare, the arithmetically smaller value is the lower bound
if (lower_bound > upper_bound || compare < 0)
if (lower_bound & 0x80)
{
lower_bound = (int32_t)(int8_t)lower_bound;
upper_bound = (int32_t)(int8_t)upper_bound;
@ -3633,7 +3633,7 @@ M68KMAKE_OP(chk2cmp2, 8, ., pcix)
int32_t upper_bound = m68ki_read_pcrel_8(ea + 1);
// for signed compare, the arithmetically smaller value is the lower bound
if (lower_bound > upper_bound || compare < 0)
if (lower_bound & 0x80)
{
lower_bound = (int32_t)(int8_t)lower_bound;
upper_bound = (int32_t)(int8_t)upper_bound;
@ -3667,7 +3667,7 @@ M68KMAKE_OP(chk2cmp2, 8, ., .)
int32_t upper_bound = m68ki_read_8(ea + 1);
// for signed compare, the arithmetically smaller value is the lower bound
if (lower_bound > upper_bound || compare < 0)
if (lower_bound & 0x80)
{
lower_bound = (int32_t)(int8_t)lower_bound;
upper_bound = (int32_t)(int8_t)upper_bound;
@ -3701,7 +3701,7 @@ M68KMAKE_OP(chk2cmp2, 16, ., pcdi)
int32_t upper_bound = m68ki_read_pcrel_16(ea + 2);
// for signed compare, the arithmetically smaller value is the lower bound
if (lower_bound > upper_bound || compare < 0)
if (lower_bound & 0x8000)
{
lower_bound = (int32_t)(int16_t)lower_bound;
upper_bound = (int32_t)(int16_t)upper_bound;
@ -3735,7 +3735,7 @@ M68KMAKE_OP(chk2cmp2, 16, ., pcix)
int32_t upper_bound = m68ki_read_pcrel_16(ea + 2);
// for signed compare, the arithmetically smaller value is the lower bound
if (lower_bound > upper_bound || compare < 0)
if (lower_bound & 0x8000)
{
lower_bound = (int32_t)(int16_t)lower_bound;
upper_bound = (int32_t)(int16_t)upper_bound;
@ -3769,7 +3769,7 @@ M68KMAKE_OP(chk2cmp2, 16, ., .)
int32_t upper_bound = m68ki_read_16(ea + 2);
// for signed compare, the arithmetically smaller value is the lower bound
if (lower_bound > upper_bound || compare < 0)
if (lower_bound & 0x8000)
{
lower_bound = (int32_t)(int16_t)lower_bound;
upper_bound = (int32_t)(int16_t)upper_bound;
@ -3800,7 +3800,7 @@ M68KMAKE_OP(chk2cmp2, 32, ., pcdi)
int64_t upper_bound = m68ki_read_pcrel_32(ea + 4);
// for signed compare, the arithmetically smaller value is the lower bound
if (lower_bound > upper_bound)
if (lower_bound & 0x80000000)
{
lower_bound = (int64_t)(int32_t)lower_bound;
upper_bound = (int64_t)(int32_t)upper_bound;
@ -3829,7 +3829,7 @@ M68KMAKE_OP(chk2cmp2, 32, ., pcix)
int64_t upper_bound = m68ki_read_pcrel_32(ea + 4);
// for signed compare, the arithmetically smaller value is the lower bound
if (lower_bound > upper_bound)
if (lower_bound & 0x80000000)
{
lower_bound = (int64_t)(int32_t)lower_bound;
upper_bound = (int64_t)(int32_t)upper_bound;
@ -3858,7 +3858,7 @@ M68KMAKE_OP(chk2cmp2, 32, ., .)
int64_t upper_bound = m68ki_read_32(ea + 4);
// for signed compare, the arithmetically smaller value is the lower bound
if (lower_bound > upper_bound)
if (lower_bound & 0x80000000)
{
lower_bound = (int64_t)(int32_t)lower_bound;
upper_bound = (int64_t)(int32_t)upper_bound;