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Always calculate all flags with mul,imul

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1717
This commit is contained in:
Sjoerd van der Berg 2004-03-12 09:06:45 +00:00
parent 44bafe6a29
commit 1ceeb2c5ce
1 changed files with 8 additions and 8 deletions
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16
src/cpu/instructions.h
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@ -548,7 +548,7 @@
}
#define MULB(op1,load,save) \
lflags.type=t_MUL; \
FillFlags(); \
reg_ax=reg_al*load(op1); \
if (reg_ax & 0xff00) { \
SETFLAGBIT(CF,true);SETFLAGBIT(OF,true); \
@ -558,10 +558,10 @@
#define MULW(op1,load,save) \
{ \
FillFlags(); \
Bitu tempu=(Bitu)reg_ax*(Bitu)(load(op1)); \
reg_ax=(Bit16u)(tempu); \
reg_dx=(Bit16u)(tempu >> 16); \
lflags.type=t_MUL; \
if (reg_dx) { \
SETFLAGBIT(CF,true);SETFLAGBIT(OF,true); \
} else { \
@ -571,10 +571,10 @@
#define MULD(op1,load,save) \
{ \
FillFlags(); \
Bit64u tempu=(Bit64u)reg_eax*(Bit64u)(load(op1)); \
reg_eax=(Bit32u)(tempu); \
reg_edx=(Bit32u)(tempu >> 32); \
lflags.type=t_MUL; \
if (reg_edx) { \
SETFLAGBIT(CF,true);SETFLAGBIT(OF,true); \
} else { \
@ -651,7 +651,7 @@
#define IMULB(op1,load,save) \
{ \
lflags.type=t_MUL; \
FillFlags(); \
reg_ax=((Bit8s)reg_al) * ((Bit8s)(load(op1))); \
if ((reg_ax & 0xff80)==0xff80 || \
(reg_ax & 0xff80)==0x0000) { \
@ -664,10 +664,10 @@
#define IMULW(op1,load,save) \
{ \
FillFlags(); \
Bits temps=((Bit16s)reg_ax)*((Bit16s)(load(op1))); \
reg_ax=(Bit16s)(temps); \
reg_dx=(Bit16s)(temps >> 16); \
lflags.type=t_MUL; \
if (((temps & 0xffff8000)==0xffff8000 || \
(temps & 0xffff8000)==0x0000)) { \
SETFLAGBIT(CF,false);SETFLAGBIT(OF,false); \
@ -678,11 +678,11 @@
#define IMULD(op1,load,save) \
{ \
FillFlags(); \
Bit64s temps=((Bit64s)((Bit32s)reg_eax))* \
((Bit64s)((Bit32s)(load(op1)))); \
reg_eax=(Bit32u)(temps); \
reg_edx=(Bit32u)(temps >> 32); \
lflags.type=t_MUL; \
if ((reg_edx==0xffffffff) && \
(reg_eax & 0x80000000) ) { \
SETFLAGBIT(CF,false);SETFLAGBIT(OF,false); \
@ -696,10 +696,10 @@
#define DIMULW(op1,op2,op3,load,save) \
{ \
FillFlags(); \
Bits res; \
res=((Bit16s)op2) * ((Bit16s)op3); \
save(op1,res & 0xffff); \
lflags.type=t_MUL; \
if ((res> -32768) && (res<32767)) { \
SETFLAGBIT(CF,false);SETFLAGBIT(OF,false); \
} else { \
@ -709,9 +709,9 @@
#define DIMULD(op1,op2,op3,load,save) \
{ \
FillFlags(); \
Bit64s res=((Bit64s)((Bit32s)op2))*((Bit64s)((Bit32s)op3)); \
save(op1,(Bit32s)res); \
lflags.type=t_MUL; \
if ((res>-((Bit64s)(2147483647)+1)) && \
(res<(Bit64s)2147483647)) { \
SETFLAGBIT(CF,false);SETFLAGBIT(OF,false); \