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Set code.big to false when settings CS in real mode.

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SMSW stores entire cr0


Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1246
This commit is contained in:
Sjoerd van der Berg 2003-09-12 16:14:27 +00:00
parent 8c86a9768e
commit b86cba7028
1 changed files with 7 additions and 1 deletions
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8
src/cpu/cpu.cpp
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@ -138,6 +138,7 @@ bool Interrupt(Bitu num) {
reg_eip=mem_readw(num << 2);
Segs.val[cs]=mem_readw((num << 2)+2);
Segs.phys[cs]=Segs.val[cs]<<4;
cpu.code.big=false;
return CPU_CheckCodeType(CODE_REAL);
} else {
/* Protected Mode Interrupt */
@ -213,6 +214,7 @@ bool CPU_Exception(Bitu exception,Bit32u error_code) {
reg_eip=mem_readw(exception << 2);
Segs.val[cs]=mem_readw((exception << 2)+2);
Segs.phys[cs]=Segs.val[cs]<<4;
cpu.code.big=false;
return CPU_CheckCodeType(CODE_REAL);
} else { /* Protected Mode Exception */
@ -233,6 +235,7 @@ bool CPU_IRET(bool use32) {
SegSet16(cs,CPU_Pop16());
CPU_SetFlagsw(CPU_Pop16());
}
cpu.code.big=false;
return CPU_CheckCodeType(CODE_REAL);
} else { /* Protected mode IRET */
/* Check if this is task IRET */
@ -323,6 +326,7 @@ bool CPU_JMP(bool use32,Bitu selector,Bitu offset) {
reg_eip=offset;
}
SegSet16(cs,selector);
cpu.code.big=false;
return CPU_CheckCodeType(CODE_REAL);
} else {
Bitu rpl=selector & 3;
@ -367,6 +371,7 @@ bool CPU_CALL(bool use32,Bitu selector,Bitu offset) {
CPU_Push32(reg_eip);
reg_eip=offset;
}
cpu.code.big=false;
SegSet16(cs,selector);
return CPU_CheckCodeType(CODE_REAL);
} else {
@ -422,6 +427,7 @@ bool CPU_RET(bool use32,Bitu bytes) {
reg_esp+=bytes;
SegSet16(cs,new_cs);
reg_eip=new_ip;
cpu.code.big=false;
return CPU_CheckCodeType(CODE_REAL);
} else {
Bitu offset,selector;
@ -561,7 +567,7 @@ Bitu CPU_GET_CRX(Bitu cr) {
void CPU_SMSW(Bitu & word) {
word=cpu.cr0 & 0xffff;
word=cpu.cr0;
}
bool CPU_LMSW(Bitu word) {