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Fixed timing issues on real hardware

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Added a beeping sound and a register dump on crash
This commit is contained in:
Morten Delenk 2016-05-22 20:26:47 +00:00
parent f71e781839
commit 6a4a634bd0
3 changed files with 28 additions and 7 deletions
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1
kernel/hal/x86/asm/snippets.S
View file

@ -309,6 +309,7 @@ intr_stub 255
//This should cover everything.
.extern handleINT
intr_common_handler:
cli
push %ebp
push %edi
push %esi

23
kernel/hal/x86/init/idt.cpp
View file

@ -3,7 +3,9 @@
#include <idt.hpp>
#include <serial.hpp>
#include <textDISP.hpp>
#include <vmm3.hpp>
auto syscall(uint32_t syscall_num, void* handle, void* args) -> void*;
extern void** progs;
namespace MTGosHAL {
IDT::IDT() {
//Init PIC
@ -32,10 +34,27 @@ namespace MTGosHAL {
loadIDT((void*)&idtptr);
}
auto IDT::handle(struct cpu_state* cpu) -> struct cpu_state* {
struct cpu_state* new_cpu=cpu;
struct cpu_state* new_cpu=cpu;
debug << "Interrupt 0x" << Base::HEXADECIMAL << (int) cpu->intr << " was raised.\n";
if(cpu->intr<=0x1F) {
err << "Exception 0x" << Base::HEXADECIMAL << (int) cpu->intr << "! Kernel halted!\n";
err << "EAX = 0x" << (int)cpu->eax << " - EBX = 0x" << (int)cpu->ebx << "\n";
err << "ECX = 0x" << (int)cpu->ecx << " - EDX = 0x" << (int)cpu->edx << "\n";
err << "ESI = 0x" << (int)cpu->esi << " - EDI = 0x" << (int)cpu->edi << "\n";
err << "SS:ESP = 0x" << (int)cpu->ss << ":0x" << (int)cpu->esp << " - SS:EBP = 0x" << (int)cpu->ss << ":0x" << (int)cpu->ebp << "\n";
err << "CS:EIP = 0x" << (int)cpu->cs << ":0x" << (int)cpu->eip << " - INTR:ERR = 0x" << (int)cpu->intr << ":0x" << (int)cpu->error << "\n";
err << "------ END OF REGISTER DUMP ------ ------ START OF PROGRAM LOADPOINTS ------\n";
for(int i=0;i<1024;i++) {
if(!progs[i])
break;
err << "0x" << (int)((uint32_t)progs[i]) << "; ";
}
err << "\n";
uint16_t counter = 1193180 / 220; //Make an annoying beep
outb(0x43, 0xB6);
outb(0x42, (uint8_t)counter);
outb(0x42, (uint8_t)(counter>>8));
outb(0x61, inb(0x61) | 3);
while(1) {
asm volatile("cli; hlt");
}
@ -54,7 +73,7 @@ namespace MTGosHAL {
new_cpu=ivt[cpu->intr][i](new_cpu);
}
if(cpu->intr>=48)
cpu->eax=(uint32_t)(::syscall(cpu->eax, (void*)(cpu->ebx), (void*)(cpu->esp)));
new_cpu->eax=(uint32_t)(::syscall(cpu->eax, (void*)(cpu->ebx), (void*)(cpu->esp)));
return new_cpu;
}
auto IDT::request(uint8_t intr, struct cpu_state* (*handler)(struct cpu_state*)) -> bool {

11
kernel/hal/x86/init/init.cpp
View file

@ -11,6 +11,7 @@
#include <vmm3.hpp>
extern "C" void intr_stub_0(void);
void main(void ** programs);
void** progs;
namespace MTGosHAL {
Serial debug;
Screen out;
@ -45,14 +46,14 @@ namespace MTGosHAL {
idt.apply();
mm.init(ebx);
multiboot_mod_list *mods = (multiboot_mod_list*) ebx->mods_addr;
void** progs=(void**)mm.alloc(4096);
uint32_t i;
for(i=0;i<(ebx->mods_count<1023?ebx->mods_count:1023);i++) { //Basically until MIN(ebx->mods_count, 1023), as we only support loading up to 1023 programs directly.
progs=(void**)mm.alloc(4096);
for(int i=0;i<1024;i++) {
progs[i]=nullptr;
}
for(uint32_t i=0;i<(ebx->mods_count<1023?ebx->mods_count:1023);i++) { //Basically until MIN(ebx->mods_count, 1023), as we only support loading up to 1023 programs directly.
progs[i]=(void*)(mods[i].mod_start);
debug << "Found module!\n";
}
i++;
progs[i]=nullptr;
::main(progs);
sti();
for(;;);