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https://github.com/RGBCube/serenity
synced 2025-07-27 22:57:44 +00:00
CPU: Handle breakpoint trap
Also, start working on the debugger app.
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parent
c112f53357
commit
77f671b462
10 changed files with 184 additions and 23 deletions
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@ -297,6 +297,21 @@ void page_fault_handler(RegisterState regs)
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}
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}
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EH_ENTRY_NO_CODE(3, breakpoint);
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void breakpoint_handler(RegisterState regs)
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{
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clac();
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if (!Process::current || Process::current->is_ring0()) {
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klog() << "Breakpoint Trap in Ring0";
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hang();
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return;
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}
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if (Thread::current->tracer()) {
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Thread::current->tracer()->set_regs(regs);
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}
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Thread::current->send_urgent_signal_to_self(SIGTRAP);
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}
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#define EH(i, msg) \
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static void _exception##i() \
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{ \
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@ -316,7 +331,6 @@ void page_fault_handler(RegisterState regs)
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EH(1, "Debug exception")
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EH(2, "Unknown error")
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EH(3, "Breakpoint")
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EH(4, "Overflow")
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EH(5, "Bounds check")
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EH(8, "Double fault")
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@ -486,7 +500,7 @@ void idt_init()
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register_interrupt_handler(0x00, divide_error_asm_entry);
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register_interrupt_handler(0x01, _exception1);
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register_interrupt_handler(0x02, _exception2);
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register_interrupt_handler(0x03, _exception3);
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register_user_callable_interrupt_handler(0x03, breakpoint_asm_entry);
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register_interrupt_handler(0x04, _exception4);
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register_interrupt_handler(0x05, _exception5);
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register_interrupt_handler(0x06, illegal_instruction_asm_entry);
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@ -36,6 +36,7 @@
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#include <Kernel/Forward.h>
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#include <Kernel/KResult.h>
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#include <Kernel/Scheduler.h>
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#include <Kernel/ThreadTracer.h>
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#include <Kernel/UnixTypes.h>
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#include <LibC/fd_set.h>
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@ -25,6 +25,7 @@
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*/
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#include <AK/Memory.h>
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#include <AK/kmalloc.h>
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#include <Kernel/ThreadTracer.h>
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namespace Kernel {
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@ -26,11 +26,8 @@
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#pragma once
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#include <AK/CircularDeque.h>
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#include <AK/NonnullOwnPtr.h>
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#include <AK/Optional.h>
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#include <AK/RefCounted.h>
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#include <Kernel/Arch/i386/CPU.h>
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#include <Kernel/UnixTypes.h>
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#include <LibC/sys/arch/i386/regs.h>
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@ -143,8 +143,10 @@ cp ../Applications/DisplayProperties/DisplayProperties mnt/bin/DisplayProperties
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cp ../Applications/Welcome/Welcome mnt/bin/Welcome
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cp ../Applications/Help/Help mnt/bin/Help
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cp ../Applications/Browser/Browser mnt/bin/Browser
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cp ../Applications/Debugger/Debugger mnt/bin/sdb
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cp ../Games/Solitaire/Solitaire mnt/bin/Solitaire
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cp ../Demos/HelloWorld/HelloWorld mnt/bin/HelloWorld
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cp ../Demos/Debugee/Debugee mnt/bin/Debugee
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cp ../Demos/WidgetGallery/WidgetGallery mnt/bin/WidgetGallery
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cp ../Demos/Fire/Fire mnt/bin/Fire
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cp ../Demos/DynamicLink/LinkDemo/LinkDemo mnt/bin/LinkDemo
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