mirror of
https://gitlab.com/sortix/sortix.git
synced 2023-02-13 20:55:38 -05:00
Refactored the interrupt code to make it cleaner and more flexible.
Added support for hooking directly into an interrupt with your own interrupt handler.
This commit is contained in:
Jonas 'Sortie' Termansen
parent
7ebed6dd6a
commit
0e48b23429
9 changed files with 306 additions and 267 deletions
|
|
@ -1,6 +1,6 @@
|
|||
/******************************************************************************
|
||||
/*******************************************************************************
|
||||
|
||||
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
|
||||
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011, 2012.
|
||||
|
||||
This file is part of Sortix.
|
||||
|
||||
|
|
@ -14,13 +14,13 @@
|
|||
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
|
||||
details.
|
||||
|
||||
You should have received a copy of the GNU General Public License along
|
||||
with Sortix. If not, see <http://www.gnu.org/licenses/>.
|
||||
You should have received a copy of the GNU General Public License along with
|
||||
Sortix. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
descriptor_tables.cpp
|
||||
Initializes and handles the GDT, TSS and IDT.
|
||||
|
||||
******************************************************************************/
|
||||
*******************************************************************************/
|
||||
|
||||
#include "platform.h"
|
||||
#include <libmaxsi/memory.h>
|
||||
|
|
@ -183,57 +183,10 @@ namespace Sortix
|
|||
CPU::OutPortB(0xA1, 0x01);
|
||||
CPU::OutPortB(0x21, 0x0);
|
||||
CPU::OutPortB(0xA1, 0x0);
|
||||
}
|
||||
|
||||
SetGate( 0, (addr_t) isr0 , 0x08, 0x8E);
|
||||
SetGate( 1, (addr_t) isr1 , 0x08, 0x8E);
|
||||
SetGate( 2, (addr_t) isr2 , 0x08, 0x8E);
|
||||
SetGate( 3, (addr_t) isr3 , 0x08, 0x8E);
|
||||
SetGate( 4, (addr_t) isr4 , 0x08, 0x8E);
|
||||
SetGate( 5, (addr_t) isr5 , 0x08, 0x8E);
|
||||
SetGate( 6, (addr_t) isr6 , 0x08, 0x8E);
|
||||
SetGate( 7, (addr_t) isr7 , 0x08, 0x8E);
|
||||
SetGate( 8, (addr_t) isr8 , 0x08, 0x8E);
|
||||
SetGate( 9, (addr_t) isr9 , 0x08, 0x8E);
|
||||
SetGate(10, (addr_t) isr10, 0x08, 0x8E);
|
||||
SetGate(11, (addr_t) isr11, 0x08, 0x8E);
|
||||
SetGate(12, (addr_t) isr12, 0x08, 0x8E);
|
||||
SetGate(13, (addr_t) isr13, 0x08, 0x8E);
|
||||
SetGate(14, (addr_t) isr14, 0x08, 0x8E);
|
||||
SetGate(15, (addr_t) isr15, 0x08, 0x8E);
|
||||
SetGate(16, (addr_t) isr16, 0x08, 0x8E);
|
||||
SetGate(17, (addr_t) isr17, 0x08, 0x8E);
|
||||
SetGate(18, (addr_t) isr18, 0x08, 0x8E);
|
||||
SetGate(19, (addr_t) isr19, 0x08, 0x8E);
|
||||
SetGate(20, (addr_t) isr20, 0x08, 0x8E);
|
||||
SetGate(21, (addr_t) isr21, 0x08, 0x8E);
|
||||
SetGate(22, (addr_t) isr22, 0x08, 0x8E);
|
||||
SetGate(23, (addr_t) isr23, 0x08, 0x8E);
|
||||
SetGate(24, (addr_t) isr24, 0x08, 0x8E);
|
||||
SetGate(25, (addr_t) isr25, 0x08, 0x8E);
|
||||
SetGate(26, (addr_t) isr26, 0x08, 0x8E);
|
||||
SetGate(27, (addr_t) isr27, 0x08, 0x8E);
|
||||
SetGate(28, (addr_t) isr28, 0x08, 0x8E);
|
||||
SetGate(29, (addr_t) isr29, 0x08, 0x8E);
|
||||
SetGate(30, (addr_t) isr30, 0x08, 0x8E);
|
||||
SetGate(31, (addr_t) isr31, 0x08, 0x8E);
|
||||
SetGate(32, (addr_t) irq0, 0x08, 0x8E);
|
||||
SetGate(33, (addr_t) irq1, 0x08, 0x8E);
|
||||
SetGate(34, (addr_t) irq2, 0x08, 0x8E);
|
||||
SetGate(35, (addr_t) irq3, 0x08, 0x8E);
|
||||
SetGate(36, (addr_t) irq4, 0x08, 0x8E);
|
||||
SetGate(37, (addr_t) irq5, 0x08, 0x8E);
|
||||
SetGate(38, (addr_t) irq6, 0x08, 0x8E);
|
||||
SetGate(39, (addr_t) irq7, 0x08, 0x8E);
|
||||
SetGate(40, (addr_t) irq8, 0x08, 0x8E);
|
||||
SetGate(41, (addr_t) irq9, 0x08, 0x8E);
|
||||
SetGate(42, (addr_t) irq10, 0x08, 0x8E);
|
||||
SetGate(43, (addr_t) irq11, 0x08, 0x8E);
|
||||
SetGate(44, (addr_t) irq12, 0x08, 0x8E);
|
||||
SetGate(45, (addr_t) irq13, 0x08, 0x8E);
|
||||
SetGate(46, (addr_t) irq14, 0x08, 0x8E);
|
||||
SetGate(47, (addr_t) irq15, 0x08, 0x8E);
|
||||
SetGate(128, (addr_t) syscall_handler, 0x08, 0x8E | 0x60); // System Calls
|
||||
|
||||
void Flush()
|
||||
{
|
||||
idt_flush((addr_t) &idt_ptr);
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
/******************************************************************************
|
||||
/*******************************************************************************
|
||||
|
||||
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
|
||||
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011, 2012.
|
||||
|
||||
This file is part of Sortix.
|
||||
|
||||
|
|
@ -14,13 +14,13 @@
|
|||
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
|
||||
details.
|
||||
|
||||
You should have received a copy of the GNU General Public License along
|
||||
with Sortix. If not, see <http://www.gnu.org/licenses/>.
|
||||
You should have received a copy of the GNU General Public License along with
|
||||
Sortix. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
descriptor_tables.cpp
|
||||
descriptor_tables.h
|
||||
Initializes and handles the GDT, TSS and IDT.
|
||||
|
||||
******************************************************************************/
|
||||
*******************************************************************************/
|
||||
|
||||
#ifndef SORTIX_DESCRIPTOR_TABLES_H
|
||||
#define SORTIX_DESCRIPTOR_TABLES_H
|
||||
|
|
@ -125,7 +125,6 @@ namespace Sortix
|
|||
|
||||
namespace IDT
|
||||
{
|
||||
|
||||
// A struct describing an interrupt gate.
|
||||
struct idt_entry32_struct
|
||||
{
|
||||
|
|
@ -168,59 +167,9 @@ namespace Sortix
|
|||
|
||||
void Init();
|
||||
void SetGate(uint8_t num, addr_t base, uint16_t sel, uint8_t flags);
|
||||
void Flush();
|
||||
}
|
||||
}
|
||||
|
||||
// These extern directives let us access the addresses of our ASM ISR handlers.
|
||||
extern "C" void isr0 ();
|
||||
extern "C" void isr1 ();
|
||||
extern "C" void isr2 ();
|
||||
extern "C" void isr3 ();
|
||||
extern "C" void isr4 ();
|
||||
extern "C" void isr5 ();
|
||||
extern "C" void isr6 ();
|
||||
extern "C" void isr7 ();
|
||||
extern "C" void isr8 ();
|
||||
extern "C" void isr9 ();
|
||||
extern "C" void isr10();
|
||||
extern "C" void isr11();
|
||||
extern "C" void isr12();
|
||||
extern "C" void isr13();
|
||||
extern "C" void isr14();
|
||||
extern "C" void isr15();
|
||||
extern "C" void isr16();
|
||||
extern "C" void isr17();
|
||||
extern "C" void isr18();
|
||||
extern "C" void isr19();
|
||||
extern "C" void isr20();
|
||||
extern "C" void isr21();
|
||||
extern "C" void isr22();
|
||||
extern "C" void isr23();
|
||||
extern "C" void isr24();
|
||||
extern "C" void isr25();
|
||||
extern "C" void isr26();
|
||||
extern "C" void isr27();
|
||||
extern "C" void isr28();
|
||||
extern "C" void isr29();
|
||||
extern "C" void isr30();
|
||||
extern "C" void isr31();
|
||||
extern "C" void isr128();
|
||||
extern "C" void irq0 ();
|
||||
extern "C" void irq1 ();
|
||||
extern "C" void irq2 ();
|
||||
extern "C" void irq3 ();
|
||||
extern "C" void irq4 ();
|
||||
extern "C" void irq5 ();
|
||||
extern "C" void irq6 ();
|
||||
extern "C" void irq7 ();
|
||||
extern "C" void irq8 ();
|
||||
extern "C" void irq9 ();
|
||||
extern "C" void irq10();
|
||||
extern "C" void irq11();
|
||||
extern "C" void irq12();
|
||||
extern "C" void irq13();
|
||||
extern "C" void irq14();
|
||||
extern "C" void irq15();
|
||||
|
||||
#endif
|
||||
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
/******************************************************************************
|
||||
/*******************************************************************************
|
||||
|
||||
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
|
||||
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011, 2012.
|
||||
|
||||
This file is part of Sortix.
|
||||
|
||||
|
|
@ -14,18 +14,17 @@
|
|||
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
|
||||
details.
|
||||
|
||||
You should have received a copy of the GNU General Public License along
|
||||
with Sortix. If not, see <http://www.gnu.org/licenses/>.
|
||||
You should have received a copy of the GNU General Public License along with
|
||||
Sortix. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
interrupt.cpp
|
||||
High level interrupt service routines and interrupt request handlers.
|
||||
|
||||
******************************************************************************/
|
||||
*******************************************************************************/
|
||||
|
||||
#include "platform.h"
|
||||
#include "log.h"
|
||||
#include "descriptor_tables.h"
|
||||
#include "interrupt.h"
|
||||
#include "panic.h"
|
||||
|
||||
#include "process.h" // Hack for SIGSEGV
|
||||
#include "sound.h" // Hack for SIGSEGV
|
||||
|
|
@ -33,122 +32,200 @@
|
|||
#include "syscall.h" // HACK FOR SIGSEGV
|
||||
#include "scheduler.h" // HACK FOR SIGSEGV
|
||||
|
||||
namespace Sortix
|
||||
namespace Sortix {
|
||||
void SysExit(int status); // HACK
|
||||
|
||||
namespace Interrupt {
|
||||
|
||||
const bool DEBUG_EXCEPTION = false;
|
||||
const bool DEBUG_IRQ = false;
|
||||
bool initialized;
|
||||
|
||||
const size_t numknownexceptions = 20;
|
||||
const char* exceptions[] =
|
||||
{ "Divide by zero", "Debug", "Non maskable interrupt", "Breakpoint",
|
||||
"Into detected overflow", "Out of bounds", "Invalid opcode",
|
||||
"No coprocessor", "Double fault", "Coprocessor segment overrun",
|
||||
"Bad TSS", "Segment not present", "Stack fault",
|
||||
"General protection fault", "Page fault", "Unknown interrupt",
|
||||
"Coprocessor fault", "Alignment check", "Machine check",
|
||||
"SIMD Floating-Point" };
|
||||
|
||||
const size_t NUM_INTERRUPTS = 256UL;
|
||||
|
||||
Handler interrupthandlers[NUM_INTERRUPTS];
|
||||
void* interrupthandlerptr[NUM_INTERRUPTS];
|
||||
|
||||
void Init()
|
||||
{
|
||||
void SysExit(int status); // HACK
|
||||
initialized = false;
|
||||
IDT::Init();
|
||||
|
||||
namespace Interrupt
|
||||
for ( size_t i = 0; i < NUM_INTERRUPTS; i++ )
|
||||
{
|
||||
const bool DEBUG_EXCEPTION = false;
|
||||
const bool DEBUG_IRQ = false;
|
||||
interrupthandlers[i] = NULL;
|
||||
interrupthandlerptr[i] = NULL;
|
||||
}
|
||||
|
||||
size_t numknownexceptions = 20;
|
||||
const char* exceptions[] =
|
||||
{ "Divide by zero", "Debug", "Non maskable interrupt", "Breakpoint",
|
||||
"Into detected overflow", "Out of bounds", "Invalid opcode",
|
||||
"No coprocessor", "Double fault", "Coprocessor segment overrun",
|
||||
"Bad TSS", "Segment not present", "Stack fault",
|
||||
"General protection fault", "Page fault", "Unknown interrupt",
|
||||
"Coprocessor fault", "Alignment check", "Machine check",
|
||||
"SIMD Floating-Point" };
|
||||
RegisterRawHandler(0, isr0, false);
|
||||
RegisterRawHandler(1, isr1, false);
|
||||
RegisterRawHandler(2, isr2, false);
|
||||
RegisterRawHandler(3, isr3, false);
|
||||
RegisterRawHandler(4, isr4, false);
|
||||
RegisterRawHandler(5, isr5, false);
|
||||
RegisterRawHandler(6, isr6, false);
|
||||
RegisterRawHandler(7, isr7, false);
|
||||
RegisterRawHandler(8, isr8, false);
|
||||
RegisterRawHandler(9, isr9, false);
|
||||
RegisterRawHandler(10, isr10, false);
|
||||
RegisterRawHandler(11, isr11, false);
|
||||
RegisterRawHandler(12, isr12, false);
|
||||
RegisterRawHandler(13, isr13, false);
|
||||
RegisterRawHandler(14, isr14, false);
|
||||
RegisterRawHandler(15, isr15, false);
|
||||
RegisterRawHandler(16, isr16, false);
|
||||
RegisterRawHandler(17, isr17, false);
|
||||
RegisterRawHandler(18, isr18, false);
|
||||
RegisterRawHandler(19, isr19, false);
|
||||
RegisterRawHandler(20, isr20, false);
|
||||
RegisterRawHandler(21, isr21, false);
|
||||
RegisterRawHandler(22, isr22, false);
|
||||
RegisterRawHandler(23, isr23, false);
|
||||
RegisterRawHandler(24, isr24, false);
|
||||
RegisterRawHandler(25, isr25, false);
|
||||
RegisterRawHandler(26, isr26, false);
|
||||
RegisterRawHandler(27, isr27, false);
|
||||
RegisterRawHandler(28, isr28, false);
|
||||
RegisterRawHandler(29, isr29, false);
|
||||
RegisterRawHandler(30, isr30, false);
|
||||
RegisterRawHandler(31, isr31, false);
|
||||
RegisterRawHandler(32, irq0, false);
|
||||
RegisterRawHandler(33, irq1, false);
|
||||
RegisterRawHandler(34, irq2, false);
|
||||
RegisterRawHandler(35, irq3, false);
|
||||
RegisterRawHandler(36, irq4, false);
|
||||
RegisterRawHandler(37, irq5, false);
|
||||
RegisterRawHandler(38, irq6, false);
|
||||
RegisterRawHandler(39, irq7, false);
|
||||
RegisterRawHandler(40, irq8, false);
|
||||
RegisterRawHandler(41, irq9, false);
|
||||
RegisterRawHandler(42, irq10, false);
|
||||
RegisterRawHandler(43, irq11, false);
|
||||
RegisterRawHandler(44, irq12, false);
|
||||
RegisterRawHandler(45, irq13, false);
|
||||
RegisterRawHandler(46, irq14, false);
|
||||
RegisterRawHandler(47, irq15, false);
|
||||
|
||||
const size_t NUM_INTERRUPTS = 256UL;
|
||||
for ( unsigned i = 48; i < 256; i++ )
|
||||
{
|
||||
RegisterRawHandler(48, interrupt_handler_null, false);
|
||||
}
|
||||
|
||||
Handler interrupthandlers[NUM_INTERRUPTS];
|
||||
void* interrupthandlerptr[NUM_INTERRUPTS];
|
||||
// TODO: Let the syscall.cpp code register this.
|
||||
RegisterRawHandler(128, syscall_handler, true);
|
||||
|
||||
void Init()
|
||||
{
|
||||
for ( size_t i = 0; i < NUM_INTERRUPTS; i++ )
|
||||
{
|
||||
interrupthandlers[i] = NULL;
|
||||
interrupthandlerptr[i] = NULL;
|
||||
}
|
||||
}
|
||||
IDT::Flush();
|
||||
initialized = true;
|
||||
|
||||
void RegisterHandler(uint8_t n, Interrupt::Handler handler, void* user)
|
||||
{
|
||||
interrupthandlers[n] = handler;
|
||||
interrupthandlerptr[n] = user;
|
||||
}
|
||||
Interrupt::Enable();
|
||||
}
|
||||
|
||||
// This gets called from our ASM interrupt handler stub.
|
||||
extern "C" void ISRHandler(Sortix::CPU::InterruptRegisters* regs)
|
||||
{
|
||||
if ( regs->int_no < 32 )
|
||||
{
|
||||
const char* message = ( regs->int_no < numknownexceptions )
|
||||
? exceptions[regs->int_no] : "Unknown";
|
||||
void RegisterHandler(uint8_t n, Interrupt::Handler handler, void* user)
|
||||
{
|
||||
interrupthandlers[n] = handler;
|
||||
interrupthandlerptr[n] = user;
|
||||
}
|
||||
|
||||
if ( DEBUG_EXCEPTION ) { regs->LogRegisters(); Log::Print("\n"); }
|
||||
// TODO: This function contains magic IDT-related values!
|
||||
void RegisterRawHandler(uint8_t index, RawHandler handler, bool userspace)
|
||||
{
|
||||
addr_t handlerentry = (addr_t) handler;
|
||||
uint16_t sel = 0x08;
|
||||
uint8_t flags = 0x8E;
|
||||
if ( userspace ) { flags |= 0x60; }
|
||||
IDT::SetGate(index, handlerentry, sel, flags);
|
||||
if ( initialized ) { IDT::Flush(); }
|
||||
}
|
||||
|
||||
// This gets called from our ASM interrupt handler stub.
|
||||
extern "C" void ISRHandler(Sortix::CPU::InterruptRegisters* regs)
|
||||
{
|
||||
if ( regs->int_no < 32 )
|
||||
{
|
||||
const char* message = ( regs->int_no < numknownexceptions )
|
||||
? exceptions[regs->int_no] : "Unknown";
|
||||
|
||||
if ( DEBUG_EXCEPTION ) { regs->LogRegisters(); Log::Print("\n"); }
|
||||
|
||||
#ifdef PLATFORM_X64
|
||||
addr_t ip = regs->rip;
|
||||
addr_t ip = regs->rip;
|
||||
#else
|
||||
addr_t ip = regs->eip;
|
||||
addr_t ip = regs->eip;
|
||||
#endif
|
||||
|
||||
// Halt and catch fire if we are the kernel.
|
||||
if ( (regs->cs & (0x4-1)) == 0 )
|
||||
{
|
||||
PanicF("Unhandled CPU Exception id %zu '%s' at ip=0x%zx "
|
||||
"(cr2=0x%p, err_code=0x%p)", regs->int_no, message,
|
||||
ip, regs->cr2, regs->err_code);
|
||||
}
|
||||
|
||||
Log::Print("The current program has crashed and was terminated:\n");
|
||||
Log::PrintF("%s exception at ip=0x%zx (cr2=0x%p, err_code=0x%p)\n",
|
||||
message, ip, regs->cr2, regs->err_code);
|
||||
|
||||
Sound::Mute();
|
||||
|
||||
CurrentProcess()->Exit(139);
|
||||
Scheduler::ProcessTerminated(regs);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
if ( interrupthandlers[regs->int_no] != NULL )
|
||||
{
|
||||
void* user = interrupthandlerptr[regs->int_no];
|
||||
interrupthandlers[regs->int_no](regs, user);
|
||||
}
|
||||
}
|
||||
|
||||
// This gets called from our ASM interrupt handler stub.
|
||||
extern "C" void IRQHandler(Sortix::CPU::InterruptRegisters* regs)
|
||||
// Halt and catch fire if we are the kernel.
|
||||
if ( (regs->cs & (0x4-1)) == 0 )
|
||||
{
|
||||
// TODO! IRQ 7 and 15 might be spurious and might need to be ignored.
|
||||
// See http://wiki.osdev.org/PIC for details (section Spurious IRQs).
|
||||
if ( regs->int_no == 32 + 7 || regs->int_no == 32 + 15 ) { return; }
|
||||
|
||||
if ( DEBUG_IRQ )
|
||||
{
|
||||
Log::PrintF("IRQ%u ", regs->int_no-32);
|
||||
regs->LogRegisters();
|
||||
Log::Print("\n");
|
||||
}
|
||||
|
||||
// Send an EOI (end of interrupt) signal to the PICs.
|
||||
|
||||
// Send reset signal to slave if this interrupt involved the slave.
|
||||
if (regs->int_no >= 40) { CPU::OutPortB(0xA0, 0x20); }
|
||||
|
||||
// Send reset signal to master.
|
||||
CPU::OutPortB(0x20, 0x20);
|
||||
|
||||
if ( interrupthandlers[regs->int_no] )
|
||||
{
|
||||
void* user = interrupthandlerptr[regs->int_no];
|
||||
interrupthandlers[regs->int_no](regs, user);
|
||||
}
|
||||
PanicF("Unhandled CPU Exception id %zu '%s' at ip=0x%zx "
|
||||
"(cr2=0x%p, err_code=0x%p)", regs->int_no, message,
|
||||
ip, regs->cr2, regs->err_code);
|
||||
}
|
||||
|
||||
extern "C" void interrupt_handler(Sortix::CPU::InterruptRegisters* regs)
|
||||
{
|
||||
size_t int_no = regs->int_no;
|
||||
if ( 32 <= int_no && int_no < 48 ) { IRQHandler(regs); }
|
||||
else { ISRHandler(regs); }
|
||||
}
|
||||
Log::Print("The current program has crashed and was terminated:\n");
|
||||
Log::PrintF("%s exception at ip=0x%zx (cr2=0x%p, err_code=0x%p)\n",
|
||||
message, ip, regs->cr2, regs->err_code);
|
||||
|
||||
Sound::Mute();
|
||||
|
||||
CurrentProcess()->Exit(139);
|
||||
Scheduler::ProcessTerminated(regs);
|
||||
|
||||
return;
|
||||
}
|
||||
|
||||
if ( interrupthandlers[regs->int_no] != NULL )
|
||||
{
|
||||
void* user = interrupthandlerptr[regs->int_no];
|
||||
interrupthandlers[regs->int_no](regs, user);
|
||||
}
|
||||
}
|
||||
|
||||
// This gets called from our ASM interrupt handler stub.
|
||||
extern "C" void IRQHandler(Sortix::CPU::InterruptRegisters* regs)
|
||||
{
|
||||
// TODO! IRQ 7 and 15 might be spurious and might need to be ignored.
|
||||
// See http://wiki.osdev.org/PIC for details (section Spurious IRQs).
|
||||
if ( regs->int_no == 32 + 7 || regs->int_no == 32 + 15 ) { return; }
|
||||
|
||||
if ( DEBUG_IRQ )
|
||||
{
|
||||
Log::PrintF("IRQ%u ", regs->int_no-32);
|
||||
regs->LogRegisters();
|
||||
Log::Print("\n");
|
||||
}
|
||||
|
||||
// Send an EOI (end of interrupt) signal to the PICs.
|
||||
|
||||
// Send reset signal to slave if this interrupt involved the slave.
|
||||
if (regs->int_no >= 40) { CPU::OutPortB(0xA0, 0x20); }
|
||||
|
||||
// Send reset signal to master.
|
||||
CPU::OutPortB(0x20, 0x20);
|
||||
|
||||
if ( interrupthandlers[regs->int_no] )
|
||||
{
|
||||
void* user = interrupthandlerptr[regs->int_no];
|
||||
interrupthandlers[regs->int_no](regs, user);
|
||||
}
|
||||
}
|
||||
|
||||
extern "C" void interrupt_handler(Sortix::CPU::InterruptRegisters* regs)
|
||||
{
|
||||
size_t int_no = regs->int_no;
|
||||
if ( 32 <= int_no && int_no < 48 ) { IRQHandler(regs); }
|
||||
else { ISRHandler(regs); }
|
||||
}
|
||||
|
||||
} // namespace Interrupt
|
||||
} // namespace Sortix
|
||||
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
/******************************************************************************
|
||||
/*******************************************************************************
|
||||
|
||||
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
|
||||
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011, 2012.
|
||||
|
||||
This file is part of Sortix.
|
||||
|
||||
|
|
@ -14,44 +14,101 @@
|
|||
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
|
||||
details.
|
||||
|
||||
You should have received a copy of the GNU General Public License along
|
||||
with Sortix. If not, see <http://www.gnu.org/licenses/>.
|
||||
You should have received a copy of the GNU General Public License along with
|
||||
Sortix. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
interrupt.h
|
||||
High level interrupt service routines and interrupt request handlers.
|
||||
|
||||
******************************************************************************/
|
||||
*******************************************************************************/
|
||||
|
||||
#ifndef SORTIX_ISR_H
|
||||
#define SORTIX_ISR_H
|
||||
#ifndef SORTIX_INTERRUPT_H
|
||||
#define SORTIX_INTERRUPT_H
|
||||
|
||||
namespace Sortix
|
||||
{
|
||||
namespace Interrupt
|
||||
{
|
||||
const unsigned IRQ0 = 32;
|
||||
const unsigned IRQ1 = 33;
|
||||
const unsigned IRQ2 = 34;
|
||||
const unsigned IRQ3 = 35;
|
||||
const unsigned IRQ4 = 36;
|
||||
const unsigned IRQ5 = 37;
|
||||
const unsigned IRQ6 = 38;
|
||||
const unsigned IRQ7 = 39;
|
||||
const unsigned IRQ8 = 30;
|
||||
const unsigned IRQ9 = 41;
|
||||
const unsigned IRQ10 = 42;
|
||||
const unsigned IRQ11 = 43;
|
||||
const unsigned IRQ12 = 44;
|
||||
const unsigned IRQ13 = 45;
|
||||
const unsigned IRQ14 = 46;
|
||||
const unsigned IRQ15 = 47;
|
||||
namespace Sortix {
|
||||
namespace Interrupt {
|
||||
|
||||
typedef void (*Handler)(CPU::InterruptRegisters* regs, void* user);
|
||||
const unsigned IRQ0 = 32;
|
||||
const unsigned IRQ1 = 33;
|
||||
const unsigned IRQ2 = 34;
|
||||
const unsigned IRQ3 = 35;
|
||||
const unsigned IRQ4 = 36;
|
||||
const unsigned IRQ5 = 37;
|
||||
const unsigned IRQ6 = 38;
|
||||
const unsigned IRQ7 = 39;
|
||||
const unsigned IRQ8 = 30;
|
||||
const unsigned IRQ9 = 41;
|
||||
const unsigned IRQ10 = 42;
|
||||
const unsigned IRQ11 = 43;
|
||||
const unsigned IRQ12 = 44;
|
||||
const unsigned IRQ13 = 45;
|
||||
const unsigned IRQ14 = 46;
|
||||
const unsigned IRQ15 = 47;
|
||||
|
||||
void RegisterHandler(uint8_t n, Handler handler, void* user);
|
||||
inline void Enable() { asm volatile("sti"); }
|
||||
inline void Disable() { asm volatile("cli"); }
|
||||
|
||||
void Init();
|
||||
}
|
||||
}
|
||||
typedef void (*Handler)(CPU::InterruptRegisters* regs, void* user);
|
||||
void RegisterHandler(uint8_t index, Handler handler, void* user);
|
||||
|
||||
typedef void (*RawHandler)(void);
|
||||
void RegisterRawHandler(uint8_t index, RawHandler handler, bool userspace);
|
||||
|
||||
void Init();
|
||||
|
||||
} // namespace Interrupt
|
||||
} // namespace Sortix
|
||||
|
||||
extern "C" void isr0();
|
||||
extern "C" void isr1();
|
||||
extern "C" void isr2();
|
||||
extern "C" void isr3();
|
||||
extern "C" void isr4();
|
||||
extern "C" void isr5();
|
||||
extern "C" void isr6();
|
||||
extern "C" void isr7();
|
||||
extern "C" void isr8();
|
||||
extern "C" void isr9();
|
||||
extern "C" void isr10();
|
||||
extern "C" void isr11();
|
||||
extern "C" void isr12();
|
||||
extern "C" void isr13();
|
||||
extern "C" void isr14();
|
||||
extern "C" void isr15();
|
||||
extern "C" void isr16();
|
||||
extern "C" void isr17();
|
||||
extern "C" void isr18();
|
||||
extern "C" void isr19();
|
||||
extern "C" void isr20();
|
||||
extern "C" void isr21();
|
||||
extern "C" void isr22();
|
||||
extern "C" void isr23();
|
||||
extern "C" void isr24();
|
||||
extern "C" void isr25();
|
||||
extern "C" void isr26();
|
||||
extern "C" void isr27();
|
||||
extern "C" void isr28();
|
||||
extern "C" void isr29();
|
||||
extern "C" void isr30();
|
||||
extern "C" void isr31();
|
||||
extern "C" void isr128();
|
||||
extern "C" void irq0();
|
||||
extern "C" void irq1();
|
||||
extern "C" void irq2();
|
||||
extern "C" void irq3();
|
||||
extern "C" void irq4();
|
||||
extern "C" void irq5();
|
||||
extern "C" void irq6();
|
||||
extern "C" void irq7();
|
||||
extern "C" void irq8();
|
||||
extern "C" void irq9();
|
||||
extern "C" void irq10();
|
||||
extern "C" void irq11();
|
||||
extern "C" void irq12();
|
||||
extern "C" void irq13();
|
||||
extern "C" void irq14();
|
||||
extern "C" void irq15();
|
||||
extern "C" void interrupt_handler_null();
|
||||
|
||||
#endif
|
||||
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
/******************************************************************************
|
||||
/*******************************************************************************
|
||||
|
||||
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011.
|
||||
COPYRIGHT(C) JONAS 'SORTIE' TERMANSEN 2011, 2012.
|
||||
|
||||
This file is part of Sortix.
|
||||
|
||||
|
|
@ -14,13 +14,14 @@
|
|||
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
|
||||
details.
|
||||
|
||||
You should have received a copy of the GNU General Public License along
|
||||
with Sortix. If not, see <http://www.gnu.org/licenses/>.
|
||||
You should have received a copy of the GNU General Public License along with
|
||||
Sortix. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
kernel.cpp
|
||||
A common interface shared by all devices that can be printed text to.
|
||||
The main kernel initialization routine. Configures hardware and starts an
|
||||
initial process from the init ramdisk, allowing a full operating system.
|
||||
|
||||
******************************************************************************/
|
||||
*******************************************************************************/
|
||||
|
||||
#include "platform.h"
|
||||
#include <libmaxsi/memory.h>
|
||||
|
|
@ -205,7 +206,7 @@ namespace Sortix
|
|||
initrdsize = 0x280000; // 2 MiB 512 KiB
|
||||
#endif
|
||||
|
||||
Memory::RegisterInitRDSize(initrdsize);;
|
||||
Memory::RegisterInitRDSize(initrdsize);
|
||||
|
||||
// Initialize the paging and virtual memory.
|
||||
Memory::Init(BootInfo);
|
||||
|
|
@ -213,12 +214,9 @@ namespace Sortix
|
|||
// Initialize the GDT and TSS structures.
|
||||
GDT::Init();
|
||||
|
||||
// Initialize the interrupt handler table to zeroes.
|
||||
// Initialize the interrupt handler table and enable interrupts.
|
||||
Interrupt::Init();
|
||||
|
||||
// Initialize the interrupt descriptor tables (enabling interrupts).
|
||||
IDT::Init();
|
||||
|
||||
// Initialize the kernel heap.
|
||||
Maxsi::Memory::Init();
|
||||
|
||||
|
|
|
|||
|
|
@ -49,9 +49,6 @@ gdt_flush_postjmp:
|
|||
idt_flush:
|
||||
# Load the IDT pointer.
|
||||
lidt (%rdi)
|
||||
|
||||
# Enable interrupts
|
||||
sti
|
||||
ret
|
||||
|
||||
.global tss_flush
|
||||
|
|
|
|||
|
|
@ -438,3 +438,8 @@ interrupt_handler_prepare:
|
|||
# Return to where we came from.
|
||||
iretq
|
||||
|
||||
.global interrupt_handler_null
|
||||
.type interrupt_handler_null, @function
|
||||
interrupt_handler_null:
|
||||
iretq
|
||||
|
||||
|
|
|
|||
|
|
@ -25,7 +25,6 @@ gdt_flush:
|
|||
idt_flush:
|
||||
mov eax, [esp+4] ; Get the pointer to the IDT, passed as a parameter.
|
||||
lidt [eax] ; Load the IDT pointer.
|
||||
sti
|
||||
ret
|
||||
|
||||
[GLOBAL tss_flush] ; Allows our C code to call tss_flush().
|
||||
|
|
|
|||
|
|
@ -157,5 +157,9 @@ irq_common_stub:
|
|||
;sti
|
||||
iret ; pops 5 things at once: CS, EIP, EFLAGS, SS, and ESP
|
||||
|
||||
global
|
||||
|
||||
global interrupt_handler_null
|
||||
interrupt_handler_null:
|
||||
iret
|
||||
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue