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[NTOS:KDBG] Augment the 'cregs' command by also displaying the task segment register. Update the help message.

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Hermès Bélusca-Maïto 2019-11-03 03:33:53 +01:00
parent 89b44cfa07
commit dc0c721ff8
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GPG key ID: 3B2539C65E7B93D0
1 changed files with 15 additions and 12 deletions
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27
ntoskrnl/kdbg/kdb_cli.c
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@ -146,7 +146,7 @@ static const struct
{ "disasm", "disasm [address] [L count]", "Disassemble count instructions at address.", KdbpCmdDisassembleX },
{ "x", "x [address] [L count]", "Display count dwords, starting at address.", KdbpCmdDisassembleX },
{ "regs", "regs", "Display general purpose registers.", KdbpCmdRegs },
{ "cregs", "cregs", "Display control registers.", KdbpCmdRegs },
{ "cregs", "cregs", "Display control, descriptor table and task segment registers.", KdbpCmdRegs },
{ "sregs", "sregs", "Display status registers.", KdbpCmdRegs },
{ "dregs", "dregs", "Display debug registers.", KdbpCmdRegs },
{ "bt", "bt [*frameaddr|thread id]", "Prints current backtrace or from given frame address.", KdbpCmdBackTrace },
@ -873,8 +873,9 @@ KdbpCmdRegs(
Tf->Ecx, Tf->Edx,
Tf->Esi, Tf->Edi,
Tf->Ebp);
KdbpPrint("EFLAGS 0x%08x ", Tf->EFlags);
/* Display the EFlags */
KdbpPrint("EFLAGS 0x%08x ", Tf->EFlags);
for (i = 0; i < 32; i++)
{
if (i == 1)
@ -894,14 +895,13 @@ KdbpCmdRegs(
KdbpPrint(EflagsBits[i]);
}
}
KdbpPrint("\n");
}
else if (Argv[0][0] == 'c') /* cregs */
{
ULONG Cr0, Cr2, Cr3, Cr4;
KDESCRIPTOR Gdtr = {0, 0, 0}, Idtr = {0, 0, 0};
USHORT Ldtr;
USHORT Ldtr, Tr;
static const PCHAR Cr0Bits[32] = { " PE", " MP", " EM", " TS", " ET", " NE", NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
" WP", NULL, " AM", NULL, NULL, NULL, NULL, NULL,
@ -911,19 +911,20 @@ KdbpCmdRegs(
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL };
/* Retrieve the control registers */
Cr0 = KdbCurrentTrapFrame->Cr0;
Cr2 = KdbCurrentTrapFrame->Cr2;
Cr3 = KdbCurrentTrapFrame->Cr3;
Cr4 = KdbCurrentTrapFrame->Cr4;
/* Get descriptor table regs */
/* Retrieve the descriptor table and task segment registers */
Ke386GetGlobalDescriptorTable(&Gdtr.Limit);
Ldtr = Ke386GetLocalDescriptorTable();
__sidt(&Idtr.Limit);
Tr = Ke386GetTr();
/* Display the control registers */
KdbpPrint("CR0 0x%08x ", Cr0);
for (i = 0; i < 32; i++)
{
if (!Cr0Bits[i])
@ -932,12 +933,12 @@ KdbpCmdRegs(
if ((Cr0 & (1 << i)) != 0)
KdbpPrint(Cr0Bits[i]);
}
KdbpPrint("\n");
KdbpPrint("\nCR2 0x%08x\n", Cr2);
KdbpPrint("CR2 0x%08x\n", Cr2);
KdbpPrint("CR3 0x%08x Pagedir-Base 0x%08x %s%s\n", Cr3, (Cr3 & 0xfffff000),
(Cr3 & (1 << 3)) ? " PWT" : "", (Cr3 & (1 << 4)) ? " PCD" : "" );
KdbpPrint("CR4 0x%08x ", Cr4);
for (i = 0; i < 32; i++)
{
if (!Cr4Bits[i])
@ -946,11 +947,13 @@ KdbpCmdRegs(
if ((Cr4 & (1 << i)) != 0)
KdbpPrint(Cr4Bits[i]);
}
KdbpPrint("\n");
/* Display the descriptor table regs */
KdbpPrint("\nGDTR Base 0x%08x Size 0x%04x\n", Gdtr.Base, Gdtr.Limit);
KdbpPrint("LDTR 0x%04x\n", Ldtr);
KdbpPrint("IDTR Base 0x%08x Size 0x%04x\n", Idtr.Base, Idtr.Limit);
/* Display the descriptor table and task segment registers */
KdbpPrint("GDTR Base 0x%08x Size 0x%04x\n", Gdtr.Base, Gdtr.Limit);
KdbpPrint("LDTR 0x%04x\n", Ldtr);
KdbpPrint("IDTR Base 0x%08x Size 0x%04x\n", Idtr.Base, Idtr.Limit);
KdbpPrint("TR 0x%04x\n", Tr);
}
else if (Argv[0][0] == 's') /* sregs */
{