diff options
Diffstat (limited to 'dev/kernel/HALKit/AMD64/HalKernelMain.cc')
| -rw-r--r-- | dev/kernel/HALKit/AMD64/HalKernelMain.cc | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/dev/kernel/HALKit/AMD64/HalKernelMain.cc b/dev/kernel/HALKit/AMD64/HalKernelMain.cc index 4de43f27..5394645a 100644 --- a/dev/kernel/HALKit/AMD64/HalKernelMain.cc +++ b/dev/kernel/HALKit/AMD64/HalKernelMain.cc @@ -38,9 +38,9 @@ EXTERN_C Int32 hal_init_platform(Kernel::HEL::BootInfoHeader* handover_hdr) { Boot::ExitBootServices(handover_hdr->f_HardwareTables.f_ImageKey, handover_hdr->f_HardwareTables.f_ImageHandle); - kKernelCR3 = kHandoverHeader->f_PageStart; + kKernelVM = kHandoverHeader->f_PageStart; - hal_write_cr3(kKernelCR3); + hal_write_cr3(kKernelVM); /************************************** */ /* INITIALIZE BIT MAP. */ @@ -54,7 +54,12 @@ EXTERN_C Int32 hal_init_platform(Kernel::HEL::BootInfoHeader* handover_hdr) { /* INITIALIZE GDT AND SEGMENTS. */ /************************************** */ - STATIC CONST auto kGDTEntriesCount = 6; + STATIC CONST auto kGDTEntriesCount = 8; + + STATIC HAL::Detail::NE_TSS kKernelTSS{}; + + kKernelTSS.fRsp0 = (UInt64) kHandoverHeader->f_StackTop; + kKernelTSS.fIopb = sizeof(HAL::Detail::NE_TSS); /* The GDT, mostly descriptors for user and kernel segments. */ STATIC Kernel::HAL::Detail::NE_GDT_ENTRY ALIGN(0x08) kGDTArray[kGDTEntriesCount] = { @@ -76,6 +81,8 @@ EXTERN_C Int32 hal_init_platform(Kernel::HEL::BootInfoHeader* handover_hdr) { .fAccessByte = 0x92, .fFlags = 0xCF, .fBaseHigh = 0}, // Kernel data + {}, // TSS data low + {}, // TSS data high {.fLimitLow = 0x0, .fBaseLow = 0, .fBaseMid = 0, @@ -90,6 +97,20 @@ EXTERN_C Int32 hal_init_platform(Kernel::HEL::BootInfoHeader* handover_hdr) { .fBaseHigh = 0}, // User data }; + kGDTArray[3].fLimitLow = sizeof(HAL::Detail::NE_TSS) - 1; + kGDTArray[3].fBaseLow = ((UIntPtr) &kKernelTSS) & 0xFFFF; + kGDTArray[3].fBaseMid = (((UIntPtr) &kKernelTSS) >> 16) & 0xFF; + kGDTArray[3].fAccessByte = 0x89; // Present, type 9 = 64-bit available TSS + kGDTArray[3].fFlags = 0x20 | ((((UIntPtr) &kKernelTSS) >> 24) & 0x0F); + kGDTArray[3].fBaseHigh = (((UIntPtr) &kKernelTSS) >> 24) & 0xFF; + + kGDTArray[4].fLimitLow = ((UIntPtr) &kKernelTSS >> 32) & 0xFFFF; + kGDTArray[4].fBaseLow = 0; + kGDTArray[4].fBaseMid = 0; + kGDTArray[4].fAccessByte = 0; + kGDTArray[4].fFlags = 0; + kGDTArray[4].fBaseHigh = 0; + // Load memory descriptors. Kernel::HAL::Register64 gdt_reg; |