mirror of
https://gitlab.os-k.eu/os-k-team/os-k.git
synced 2023-08-25 14:03:10 +02:00
int 0x80 is triggered (but nothing printed though)
* Better gdb options (hbreak) * 255 isr can now be registered * EarlyExceptionHandler is static
This commit is contained in:
parent
fa525fe066
commit
e00ce40c6e
@ -141,4 +141,10 @@ New member of our project : Antoine Cure is a new contributor
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2020-02-12 @os-k-team <os-k-team@os-k.eu>
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* ACPI : DSDT, MCFG are now detected and parseable
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* PCI express : bus enumerating functionnal
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* PCI express : bus enumerating functionnal
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[...] Corona Time Skip
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2021-02-26 @os-k-team <os-k-team@os-k.eu>
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* Syscall : interrupt 0x80 will be used
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* Userspace : new codesegment added
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13
Makefile
13
Makefile
@ -336,10 +336,11 @@ gdb: all installonimage
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-hda $(installdisk) -no-reboot -no-shutdown -d \
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cpu_reset,guest_errors,pcall,int -s -S 2> $(BUILDDIR)/qemu.log &
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@gdb \
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-ex "set arch i386:x86-64:intel" \
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-ex "target remote localhost:1234" \
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-ex "set arch i386:x86-64" \
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-ex "target extended-remote localhost:1234" \
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-ex "symbol-file $(BINDIR)/kaleid" \
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-ex "break BtStartKern" \
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-ex "hbreak BtStartKern" \
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ddd: all installonimage
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@setsid qemu-system-x86_64 -m $(ram) -enable-kvm -machine type=q35 -rtc base=localtime \
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@ -352,10 +353,10 @@ gdbnokvm: all installonimage
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-hda $(installdisk) -no-reboot -no-shutdown -d \
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cpu_reset,guest_errors,pcall,int -s -S 2> $(BUILDDIR)/qemu.log &
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@gdb \
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-ex "set arch i386:x86-64:intel" \
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-ex "target remote localhost:1234" \
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-ex "set arch i386:x86-64" \
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-ex "target extended-remote localhost:1234" \
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-ex "symbol-file $(BINDIR)/kaleid" \
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-ex "break BtStartKern" \
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-ex "hbreak BtStartKern" \
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dddnokvm: all installonimage
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@setsid qemu-system-x86_64 -m $(ram) -machine type=q35 -rtc base=localtime \
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@ -43,8 +43,7 @@
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├── build
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│ ├── create_disk.sh
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│ ├── install-os-k.sh
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│ ├── kernel.ld
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│ └── qemu.log
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│ └── kernel.ld
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├── docs
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│ ├── boot
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│ │ ├── grub
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@ -180,4 +179,4 @@
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├── ProjectTree
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└── README.md
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39 directories, 116 files
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39 directories, 115 files
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@ -9,7 +9,9 @@ For changelog, see [ChangeLog](ChangeLog)
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For structure of the sources, see [ProjectTree](ProjectTree)
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For our IRC channel, see `#os.k-devel` on [Freenode](https://webchat.freenode.net)
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We have an IRC channel, see `#os.k-devel` on [Freenode](https://webchat.freenode.net)
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For our XMPP public chat, see [os-k-team@conference.os-k.eu](xmpp:os-k-team@conference.os-k.eu?join)
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Note that every file within OS/K is written using spaces for tabulation, with each
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tabulation being 4 spaces long.
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@ -91,6 +91,25 @@ void KeBrkDumpRegisters(ISRFrame_t *regs);
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_isr1(0,1,2,3,4,5,6,7,8,9); _isr1(10,11,12,13,14,15,16,17,18,19);
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_isr1(20,21,22,23,24,25,26,27,28,29); _isr1(30,31,32,33,34,35,36,37,38,39);
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_isr1(40,41,42,43,44,45,46,47,48,49); _isr1(50,51,52,53,54,55,56,57,58,59);
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_isr1(60,61,62,63,64,65,66,67,68,69); _isr1(70,71,72,73,74,75,76,77,78,79);
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_isr1(80,81,82,83,84,85,86,87,88,89); _isr1(90,91,92,93,94,95,96,97,98,99);
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_isr1(100,101,102,103,104,105,106,107,108,109);
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_isr1(110,111,112,113,114,115,116,117,118,119);
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_isr1(120,121,122,123,124,125,126,127,128,129);
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_isr1(130,131,132,133,134,135,136,137,138,139);
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_isr1(140,141,142,143,144,145,146,147,148,149);
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_isr1(150,151,152,153,154,155,156,157,158,159);
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_isr1(160,161,162,163,164,165,166,167,168,169);
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_isr1(170,171,172,173,174,175,176,177,178,179);
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_isr1(180,181,182,183,184,185,186,187,188,189);
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_isr1(190,191,192,193,194,195,196,197,198,199);
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_isr1(200,201,202,203,204,205,206,207,208,209);
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_isr1(210,211,212,213,214,215,216,217,218,219);
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_isr1(220,221,222,223,224,225,226,227,228,229);
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_isr1(230,231,232,233,234,235,236,237,238,239);
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_isr1(240,241,242,243,244,245,246,247,248,249);
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_isr0(250,251,252,253,254);
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void isr255();
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#undef _isr1
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#undef _isr0
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@ -99,6 +99,8 @@ noreturn void BtStartKern(multiboot_info_t *mbInfo, uint mbMagic, void *codeSeg)
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"This program comes with ABSOLUTELY NO WARRANTY.\n"
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"This is free software, type `ver' for details.\n");
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interrupt(0x80);
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ShStartShell();
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//KeCrashSystem();
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@ -74,13 +74,14 @@ static char *ExceptionsChar[32] = {
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static void EnablePIC(void);
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static void EarlyExceptionHandler(ISRFrame_t *regs);
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static void DoubleFaultHandler(ISRFrame_t *regs);
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static void EarlySyscallHandler(ISRFrame_t *regs);
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//
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// Registers an isr with his IRQ to handle driver interrupts
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//
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error_t KeRegisterISR(void (*isr)(ISRFrame_t *regs), uchar isrNo)
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{
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uchar n = isrList.n;
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uchar n = isrList.n; // Number of registered entries
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int OverWriting = 0;
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assert(KeIdtIsInitialized); // IDT initialized
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@ -88,14 +89,16 @@ error_t KeRegisterISR(void (*isr)(ISRFrame_t *regs), uchar isrNo)
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if (n == 0) goto settingUp;
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for (int i = 0; i < n; i++) {
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if (isrNo == isrList.entry[i].isrNo) {
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if (isrNo == isrList.entry[i].isrNo) { // If that isr is already
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// registered, overwrite using
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// the same entry
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n = i;
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OverWriting++;
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break;
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}
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}
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if ((n == 255)) // IRQs not filled
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if ((n == 255)) // That IRQ cannot exists
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return ENOMEM;
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settingUp:
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@ -132,10 +135,10 @@ void KeSetupIDT(void)
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KeSetIDTGate(0x07, (ulong)isr7, codeSeg, 0x8E, 2); // XXX device not available, useful for FPU save/restore when multitasking
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KeSetIDTGate(0x08, (ulong)isr8, codeSeg, 0x8E, 1); // DOUBLE FAULT
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KeSetIDTGate(0x09, (ulong)isr9, codeSeg, 0x8E, 2);
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KeSetIDTGate(0x0A, (ulong)isr10, codeSeg, 0x8E, 0); // INVALID TSS
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KeSetIDTGate(0x0A, (ulong)isr10, codeSeg, 0x8E, 0); // INVALID TSS, 0 means don't use Interrupt Stack Table
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KeSetIDTGate(0x0B, (ulong)isr11, codeSeg, 0x8E, 2);
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KeSetIDTGate(0x0C, (ulong)isr12, codeSeg, 0x8E, 1); // STACK SEGMENT FAULT
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KeSetIDTGate(0x0D, (ulong)isr13, codeSeg, 0x8E, 2);
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KeSetIDTGate(0x0D, (ulong)isr13, codeSeg, 0x8E, 2); // GPF
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KeSetIDTGate(0x0E, (ulong)isr14, codeSeg, 0x8E, 2);
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KeSetIDTGate(0x0F, (ulong)isr15, codeSeg, 0x8E, 2); // INTEL RESERVED
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KeSetIDTGate(0x10, (ulong)isr16, codeSeg, 0x8E, 2);
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@ -156,7 +159,7 @@ void KeSetupIDT(void)
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KeSetIDTGate(0x1F, (ulong)isr31, codeSeg, 0x8E, 2); // INTEL RESERVED
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// Set IDT IRQs Gates
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KeSetIDTGate(0x20, (ulong)isr32, codeSeg, 0x8E, 0);
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KeSetIDTGate(0x20, (ulong)isr32, codeSeg, 0x8E, 0); // 0 means don't use Interrupt Stack Table
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KeSetIDTGate(0x21, (ulong)isr33, codeSeg, 0x8E, 3);
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KeSetIDTGate(0x22, (ulong)isr34, codeSeg, 0x8E, 3); // NEVER RAISED : cascaded
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KeSetIDTGate(0x23, (ulong)isr35, codeSeg, 0x8E, 3);
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@ -172,16 +175,20 @@ void KeSetupIDT(void)
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KeSetIDTGate(0x2D, (ulong)isr45, codeSeg, 0x8E, 3);
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KeSetIDTGate(0x2E, (ulong)isr46, codeSeg, 0x8E, 3);
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KeSetIDTGate(0x2F, (ulong)isr47, codeSeg, 0x8E, 3);
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// SYSCALL
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KeSetIDTGate(0x80, (ulong)isr128, codeSeg, 0x8E, 3);
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KeIdtIsInitialized++;
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//Setup Early Exception handler
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for (uchar i = 0 ; i < 0x20 ; i++) {
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for (uchar i = 0 ; i < 0x2F ; i++) {
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KeRegisterISR(EarlyExceptionHandler, i);
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}
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KeRegisterISR(KeBrkDumpRegisters, 0x3);
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KeRegisterISR(DoubleFaultHandler, 0x8);
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KeRegisterISR(EarlySyscallHandler, 0x80);
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// Load IDT
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KeLoadIDT();
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@ -219,7 +226,7 @@ static void EnablePIC(void)
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// Set ICW2 (IRQ base offsets)
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IoWriteByteOnPort(0x21, 0x20); // 0x20 is the first free interrupt for IRQ0
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IoWriteByteOnPort(0xa1, 0x28); // PIC2 is offseted to 0x28
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IoWriteByteOnPort(0xa1, 0x28); // PIC2 is offseted to 0x28, just after PIC1
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// Set ICW3
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IoWriteByteOnPort(0x21, 0x4); // A slave exists
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@ -320,7 +327,7 @@ void _KeHandleISR(ISRFrame_t *regs)
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return; // INTEL RESERVED
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// Spurious interrupt handling.
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if (regs->intNo > 0x20 && !(KeGetIrqRegister(0x0b) & (1<<(regs->intNo - 0x20)))) {
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if (regs->intNo >= 0x20 && regs->intNo <= 0x2F && !(KeGetIrqRegister(0x0b) & (1<<(regs->intNo - 0x20)))) {
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KeSpuriousCount++;
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return;
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}
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@ -384,6 +391,11 @@ static void DoubleFaultHandler(ISRFrame_t *regs)
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KeHaltCPU();
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}
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static void EarlySyscallHandler(ISRFrame_t *regs)
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{
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DebugLog("Got a system call !\n");
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}
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void KeBrkDumpRegisters(ISRFrame_t *regs)
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{
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IoDoBeepNoIdt();
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@ -58,11 +58,11 @@ isrPreHandler:
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push rax
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; Check if we are switching from user mode to supervisor mode
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mov rax, [rsp + 152]
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and rax, 0x3000
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jz .SEnter
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;mov rax, [rsp + 152]
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;and rax, 0x3000
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;jz .SEnter
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swapgs ; XXX need TSS
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;swapgs ; XXX need TSS
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.SEnter:
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; Increment mask count as we configure all interrupts to mask IF
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@ -79,11 +79,11 @@ isrPreHandler:
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dec qword [gs:8]
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; check if we are switching from supervisor to user mode
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mov rax, [rsp + 152]
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and rax, 0x3000
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jz .SExit
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;mov rax, [rsp + 152]
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;and rax, 0x3000
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;jz .SExit
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swapgs ; XXX need TSS
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;swapgs ; XXX need TSS
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.SExit:
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; pop the control registers
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@ -176,7 +176,7 @@ IsrWithoutErrCode 31
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;; IRQs
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%assign i 32
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%rep 225
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%rep 255
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IsrWithoutErrCode i
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%assign i i+1
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%endrep
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@ -27,13 +27,13 @@
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#include <init/boot.h>
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GdtPtr_t gdtPtr;
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GdtEntry_t gdt[4] __attribute__((__aligned__(KPAGESIZE)));
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GdtEntry_t gdt[5] __attribute__((__aligned__(KPAGESIZE)));
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TssDescriptor_t tssDesc __attribute__((__aligned__(KPAGESIZE)));
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Tss_t tss __attribute__((__aligned__(KPAGESIZE)));
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void MmInitGdt(void)
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{
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ushort tssOffset = (ushort)((ulong)(&gdt[2]) - (ulong)(&gdt[0]));
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ushort tssOffset = (ushort)((ulong)(&gdt[3]) - (ulong)(&gdt[0]));
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gdtPtr.base = (ulong)&gdt[0];
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gdtPtr.limit = sizeof(gdt) - 1;
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@ -42,12 +42,14 @@ void MmInitGdt(void)
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memzero((void *)&tssDesc, sizeof(tssDesc));
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memzero((void *)&tss, sizeof(tss));
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// Kernel codeseg
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gdt[1].lowLimit = 0xFFFF;
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gdt[1].access = 0x98;
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gdt[1].flags = 0x20;
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// User codeseg
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gdt[2].lowLimit = 0xFFFF;
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gdt[2].access = 0x98;
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gdt[2].access = 0xF8;
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gdt[2].flags = 0x20;
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tssDesc.access = 0x89;
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@ -61,6 +63,7 @@ void MmInitGdt(void)
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tss.ist1 = (ulong)memalign(4*MB, 4*KB) + 4*MB; // ISR RESCUE STACK
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tss.ist2 = (ulong)memalign(4*MB, 4*KB) + 4*MB; // ISR STACK
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tss.ist3 = (ulong)memalign(4*MB, 4*KB) + 4*MB; // ISR STACK
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tss.rsp0 = (ulong)memalign(4*MB, 4*KB) + 4*MB; // Another Stack
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tss.iomap_base = sizeof(tss);
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DebugLog("ISR Stacks initialized : Rescue %p, Normal %p, %p\n",
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@ -68,34 +71,17 @@ void MmInitGdt(void)
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tss.ist2,
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tss.ist3);
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memmove(&gdt[2], &tssDesc, sizeof(TssDescriptor_t));
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memmove(&gdt[3], &tssDesc, sizeof(TssDescriptor_t));
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DebugLog("TSS setting up :\n"
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"gdt[0] %#x\n"
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"gdt[2] %#x\n"
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"access : %#x\n"
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"flags : %#x\n"
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"lowBase : %#x\n"
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"middleBase : %#x\n"
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"highBase : %#x\n"
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"veryHighBase: %#x\n"
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"lowLimit : %#x\n"
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"ist : %#x\n"
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"iomap_base : %#x\n"
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"offset : %#x\n",
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&gdt[0],
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&gdt[2],
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tssDesc.access,
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tssDesc.flags,
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tssDesc.lowBase,
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tssDesc.middleBase,
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tssDesc.highBase,
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tssDesc.veryHighBase,
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tssDesc.lowLimit,
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tss.ist1,
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tss.iomap_base,
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tssOffset
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);
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DebugLog("GDT & TSS initialized\n");
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DebugLog(" gdt[0] : %#x\n", &gdt[0]);
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DebugLog(" gdt[1] : %#x\n", &gdt[1]);
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DebugLog(" gdt[2] : %#x\n", &gdt[2]);
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DebugLog(" tss : %#x\n", &gdt[3]);
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DebugLog(" ist1 : %#x\n", tss.ist1);
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DebugLog(" ist2 : %#x\n", tss.ist2);
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DebugLog(" ist3 : %#x\n", tss.ist3);
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DebugLog(" rsp0 : %#x\n", tss.ist1);
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MmLoadGdt(&gdtPtr, tssOffset);
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}
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