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Added Page Size Extension (4MB pages) to Pentium CPUs.

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This commit is contained in:
SarahW 2017-07-16 21:24:09 +01:00
commit dc511447df
3 changed files with 41 additions and 4 deletions
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9
src/cpu.c
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@ -52,6 +52,7 @@ enum
{
CPUID_FPU = (1 << 0),
CPUID_VME = (1 << 1),
CPUID_PSE = (1 << 3),
CPUID_TSC = (1 << 4),
CPUID_MSR = (1 << 5),
CPUID_CMPXCHG8B = (1 << 8),
@ -978,7 +979,7 @@ void cpu_set()
cpu_hasMSR = 1;
cpu_hasCR4 = 1;
cpu_hasVME = 1;
cpu_CR4_mask = CR4_VME | CR4_PVI | CR4_TSD | CR4_DE | CR4_MCE | CR4_PCE;
cpu_CR4_mask = CR4_VME | CR4_PVI | CR4_TSD | CR4_DE | CR4_PSE | CR4_MCE | CR4_PCE;
codegen_timing_set(&codegen_timing_pentium);
break;
@ -1019,7 +1020,7 @@ void cpu_set()
cpu_hasMSR = 1;
cpu_hasCR4 = 1;
cpu_hasVME = 1;
cpu_CR4_mask = CR4_VME | CR4_PVI | CR4_TSD | CR4_DE | CR4_MCE | CR4_PCE;
cpu_CR4_mask = CR4_VME | CR4_PVI | CR4_TSD | CR4_DE | CR4_PSE | CR4_MCE | CR4_PCE;
codegen_timing_set(&codegen_timing_pentium);
break;
@ -1299,7 +1300,7 @@ void cpu_CPUID()
{
EAX = CPUID;
EBX = ECX = 0;
EDX = CPUID_FPU | CPUID_VME | CPUID_TSC | CPUID_MSR | CPUID_CMPXCHG8B;
EDX = CPUID_FPU | CPUID_VME | CPUID_PSE | CPUID_TSC | CPUID_MSR | CPUID_CMPXCHG8B;
}
else
EAX = 0;
@ -1317,7 +1318,7 @@ void cpu_CPUID()
{
EAX = CPUID;
EBX = ECX = 0;
EDX = CPUID_FPU | CPUID_VME | CPUID_TSC | CPUID_MSR | CPUID_CMPXCHG8B | CPUID_MMX;
EDX = CPUID_FPU | CPUID_VME | CPUID_PSE | CPUID_TSC | CPUID_MSR | CPUID_CMPXCHG8B | CPUID_MMX;
}
else
EAX = 0;