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Add a /proc/PID/regs that shows register state from the process's TSS.

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This commit is contained in:
Andreas Kling 2018-11-07 18:40:29 +01:00
parent 678882e020
commit dd887e158b
1 changed files with 22 additions and 0 deletions
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22
Kernel/ProcFileSystem.cpp
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@ -105,6 +105,27 @@ ByteBuffer procfs$pid_stack(Process& process)
return buffer;
}
ByteBuffer procfs$pid_regs(Process& process)
{
ProcessInspectionScope scope(process);
auto& tss = process.tss();
auto buffer = ByteBuffer::createUninitialized(1024);
char* ptr = (char*)buffer.pointer();
ptr += ksprintf(ptr, "eax: %x\n", tss.eax);
ptr += ksprintf(ptr, "ebx: %x\n", tss.ebx);
ptr += ksprintf(ptr, "ecx: %x\n", tss.ecx);
ptr += ksprintf(ptr, "edx: %x\n", tss.edx);
ptr += ksprintf(ptr, "esi: %x\n", tss.esi);
ptr += ksprintf(ptr, "edi: %x\n", tss.edi);
ptr += ksprintf(ptr, "ebp: %x\n", tss.ebp);
ptr += ksprintf(ptr, "cr3: %x\n", tss.cr3);
ptr += ksprintf(ptr, "flg: %x\n", tss.eflags);
ptr += ksprintf(ptr, "sp: %w:%x\n", tss.ss, tss.esp);
ptr += ksprintf(ptr, "pc: %w:%x\n", tss.cs, tss.eip);
buffer.trim(ptr - (char*)buffer.pointer());
return buffer;
}
ByteBuffer procfs$pid_exe(Process& process)
{
ProcessInspectionScope scope(process);
@ -121,6 +142,7 @@ void ProcFileSystem::addProcess(Process& process)
m_pid2inode.set(process.pid(), dir.index());
addFile(createGeneratedFile("vm", [&process] { return procfs$pid_vm(process); }), dir.index());
addFile(createGeneratedFile("stack", [&process] { return procfs$pid_stack(process); }), dir.index());
addFile(createGeneratedFile("regs", [&process] { return procfs$pid_regs(process); }), dir.index());
addFile(createGeneratedFile("fds", [&process] { return procfs$pid_fds(process); }), dir.index());
if (process.executableInode().isValid())
addFile(createGeneratedFile("exe", [&process] { return procfs$pid_exe(process); }, 00120777), dir.index());