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Added HLT Instruction handling routines.

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1055
This commit is contained in:
Sjoerd van der Berg 2003-06-14 07:27:27 +00:00
parent 019442ad4e
commit 4d45092d87
1 changed files with 18 additions and 2 deletions
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20
src/cpu/cpu.cpp
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@ -791,8 +791,24 @@ void CPU_CPUID(void) {
}
void CPU_Real_16_Slow_Start(void);
void CPU_Core_Full_Start(void);
static Bitu HLT_Decode(void) {
/* Stay here just as long until an external interrupt has changed CS:EIP */
if ((reg_eip!=cpu.hlt.eip) || (SegValue(cs)!=cpu.hlt.cs)) {
cpu.state=0xff; //force a new state to set decoder
CPU_CheckState();
return 0x0;
}
CPU_Cycles=0;
return 0x0;
}
void CPU_HLT(void) {
cpu.hlt.cs=SegValue(cs);
cpu.hlt.eip=reg_eip;
CPU_Cycles=0;
cpudecoder=&HLT_Decode;
}
static void CPU_CycleIncrease(void) {
Bitu old_cycles=CPU_CycleMax;