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Add the CR4 Page Global Enable bit support to Pentium Pro and Pentium II CPUs

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This commit is contained in:
Alexander Babikov
2022-12-01 22:33:55 +05:00
parent 3c0d2aa7d3
commit 6e3ffea3d4
3 changed files with 8 additions and 6 deletions
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4
src/cpu/x86_ops_mov_ctrl.h
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@@ -148,7 +148,7 @@ opMOV_CRx_r_a16(uint32_t fetchdat)
break;
case 4:
if (cpu_has_feature(CPU_FEATURE_CR4)) {
if (((cpu_state.regs[cpu_rm].l ^ cr4) & cpu_CR4_mask) & CR4_PAE)
if (((cpu_state.regs[cpu_rm].l ^ cr4) & cpu_CR4_mask) & (CR4_PAE | CR4_PGE))
flushmmucache();
cr4 = cpu_state.regs[cpu_rm].l & cpu_CR4_mask;
break;
@@ -205,7 +205,7 @@ opMOV_CRx_r_a32(uint32_t fetchdat)
break;
case 4:
if (cpu_has_feature(CPU_FEATURE_CR4)) {
if (((cpu_state.regs[cpu_rm].l ^ cr4) & cpu_CR4_mask) & CR4_PAE)
if (((cpu_state.regs[cpu_rm].l ^ cr4) & cpu_CR4_mask) & (CR4_PAE | CR4_PGE))
flushmmucache();
cr4 = cpu_state.regs[cpu_rm].l & cpu_CR4_mask;
break;