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Index > OS Construction > sysexitq, exception

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a115433



Joined: 05 Mar 2010
Posts: 144
a115433
after executing sysexitq i have exception. vector is i belive 30.
this occur only while in long mode. do you have any idea why?
Post 18 Mar 2010, 16:34
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baldr



Joined: 19 Mar 2008
Posts: 1651
baldr
a115433,

Don't be secretive, provide us with faulting code.
Post 18 Mar 2010, 16:54
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a115433



Joined: 05 Mar 2010
Posts: 144
a115433
I was wrong, forgot about extension of IDT.
its vector 15. ive managed to acquire it by guessing IDT limit and checking error type. limit error = more, other error = ok.

vector 15 is reserved Sad

here is bochs dump:
Code:
00000000000i[     ] reading configuration from a
00000000000i[     ] installing win32 module as the Bochs GUI
00000000000i[     ] Bochs x86 Emulator 2.4.2
00000000000i[     ]   Build from CVS snapshot on November 12, 2009
00000000000i[     ] System configuration
00000000000i[     ]   processors: 1 (cores=1, HT threads=1)
00000000000i[     ]   A20 line support: yes
00000000000i[     ] CPU configuration
00000000000i[     ]   level: 6
00000000000i[     ]   SMP support: no
00000000000i[     ]   APIC support: yes
00000000000i[     ]   FPU support: yes
00000000000i[     ]   MMX support: yes
00000000000i[     ]   SSE support: 2
00000000000i[     ]   CLFLUSH support: yes
00000000000i[     ]   3dnow! support: no
00000000000i[     ]   1G paging support: no
00000000000i[     ]   x86-64 support: yes
00000000000i[     ]   SEP support: yes
00000000000i[     ]   MWAIT support: no
00000000000i[     ]   XSAVE support: no
00000000000i[     ]   AES support: no
00000000000i[     ]   VMX support: no
00000000000i[     ] Optimization configuration
00000000000i[     ]   RepeatSpeedups support: yes
00000000000i[     ]   Trace cache support: yes
00000000000i[     ]   Fast function calls: yes
00000000000i[     ] Devices configuration
00000000000i[     ]   ACPI support: yes
00000000000i[     ]   NE2000 support: yes
00000000000i[     ]   PCI support: yes, enabled=no
00000000000i[     ]   SB16 support: yes
00000000000i[     ]   USB support: yes
00000000000i[     ]   VGA extension support: vbe cirrus
00000000000i[MEM0 ] allocated memory at 01DF0020. after alignment, vector=01DF1000
00000000000i[MEM0 ] 32,00MB
00000000000i[MEM0 ] mem block size = 0x00100000, blocks=32
00000000000i[MEM0 ] rom at 0xfffe0000/131072 ('BIOS-bochs-latest')
00000000000i[MEM0 ] rom at 0xc0000/40448 ('VGABIOS-lgpl-latest')
00000000000i[CMOS ] Using local time for initial clock
00000000000i[CMOS ] Setting initial clock to: Thu Mar 18 18:48:39 2010 (time0=1268934519)
00000000000i[DMA  ] channel 4 used by cascade
00000000000i[DMA  ] channel 2 used by Floppy Drive
00000000000i[FDD  ] fd0: 'r.bin' ro=0, h=2,t=80,spt=18
00000000000i[MEM0 ] Register memory access handlers: 0x000a0000 - 0x000bffff
00000000000i[WGUI ] Desktop Window dimensions: 1680 x 1050
00000000000i[WGUI ] Number of Mouse Buttons = 8
00000000000i[WGUI ] IME disabled
00000000000i[MEM0 ] Register memory access handlers: 0xe0000000 - 0xe0ffffff
00000000000i[CLVGA] VBE Bochs Display Extension Enabled
00000000000i[CLVGA] interval=50000
00000000000i[     ] init_dev of 'unmapped' plugin device by virtual method
00000000000i[     ] init_dev of 'biosdev' plugin device by virtual method
00000000000i[     ] init_dev of 'speaker' plugin device by virtual method
00000000000i[     ] init_dev of 'extfpuirq' plugin device by virtual method
00000000000i[     ] init_dev of 'gameport' plugin device by virtual method
00000000000i[     ] init_dev of 'ioapic' plugin device by virtual method
00000000000i[IOAP ] initializing I/O APIC
00000000000i[MEM0 ] Register memory access handlers: 0xfec00000 - 0xfec00fff
00000000000i[     ] init_dev of 'keyboard' plugin device by virtual method
00000000000i[KBD  ] will paste characters every 1000 keyboard ticks
00000000000i[     ] init_dev of 'harddrv' plugin device by virtual method
00000000000i[HD   ] Using boot sequence floppy, none, none
00000000000i[HD   ] Floppy boot signature check is enabled
00000000000i[     ] register state of 'unmapped' plugin device by virtual method
00000000000i[     ] register state of 'biosdev' plugin device by virtual method
00000000000i[     ] register state of 'speaker' plugin device by virtual method
00000000000i[     ] register state of 'extfpuirq' plugin device by virtual method
00000000000i[     ] register state of 'gameport' plugin device by virtual method
00000000000i[     ] register state of 'ioapic' plugin device by virtual method
00000000000i[     ] register state of 'keyboard' plugin device by virtual method
00000000000i[     ] register state of 'harddrv' plugin device by virtual method
00000000000i[SYS  ] bx_pc_system_c::Reset(HARDWARE) called
00000000000i[CPU0 ] cpu hardware reset
00000000000i[APIC0] allocate APIC id=0 (MMIO enabled) to 0xfee00000
00000000000i[     ] reset of 'unmapped' plugin device by virtual method
00000000000i[     ] reset of 'biosdev' plugin device by virtual method
00000000000i[     ] reset of 'speaker' plugin device by virtual method
00000000000i[     ] reset of 'extfpuirq' plugin device by virtual method
00000000000i[     ] reset of 'gameport' plugin device by virtual method
00000000000i[     ] reset of 'ioapic' plugin device by virtual method
00000000000i[     ] reset of 'keyboard' plugin device by virtual method
00000000000i[     ] reset of 'harddrv' plugin device by virtual method
00000003305i[BIOS ] $Revision: 1.235 $ $Date: 2009/09/28 16:36:02 $
00000200000i[WGUI ] dimension update x=720 y=400 fontheight=16 fontwidth=9 bpp=8
00000318075i[KBD  ] reset-disable command received
00000444776i[VBIOS] VGABios $Id: vgabios.c,v 1.69 2009/04/07 18:18:20 vruppert Exp $

00000444847i[CLVGA] VBE known Display Interface b0c0
00000444879i[CLVGA] VBE known Display Interface b0c5
00000447804i[VBIOS] VBE Bios $Id: vbe.c,v 1.62 2009/01/25 15:46:25 vruppert Exp $
00000754365i[BIOS ] Starting rombios32
00000754862i[BIOS ] Shutdown flag 0
00000755543i[BIOS ] ram_size=0x02000000
00000756021i[BIOS ] ram_end=32MB
00000796629i[BIOS ] Found 1 cpu(s)
00000815754i[BIOS ] bios_table_addr: 0x000fba98 end=0x000fcc00
00000831122i[BIOS ] MP table addr=0x000fbb70 MPC table addr=0x000fbaa0 size=0xd0
00000832966i[BIOS ] SMBIOS table addr=0x000fbb80
00000833849i[BIOS ] bios_table_cur_addr: 0x000fbc84
00012943015i[BIOS ] Booting from 0000:7c00
00012943119e[CPU0 ] interrupt(long mode): IDT entry extended attributes DWORD4 TYPE != 0
00012943119i[CPU0 ] CPU is in long mode (active)
00012943119i[CPU0 ] CS.d_b = 16 bit
00012943119i[CPU0 ] SS.d_b = 32 bit
00012943119i[CPU0 ] EFER   = 0x00000500
00012943119i[CPU0 ] | RAX=0000000000007d73  RBX=0000000000000000
00012943119i[CPU0 ] | RCX=0000000000007d73  RDX=0000000000007d22
00012943119i[CPU0 ] | RSP=0000000000007d73  RBP=0000000000000000
00012943119i[CPU0 ] | RSI=00000000000e3258  RDI=000000000000ffac
00012943119i[CPU0 ] |  R8=0000000000000000   R9=0000000000000000
00012943119i[CPU0 ] | R10=0000000000000000  R11=0000000000000000
00012943119i[CPU0 ] | R12=0000000000000000  R13=0000000000000000
00012943119i[CPU0 ] | R14=0000000000000000  R15=0000000000000000
00012943119i[CPU0 ] | IOPL=0 id vip vif ac vm RF nt of df if tf SF zf af PF cf
00012943119i[CPU0 ] | SEG selector     base    limit G D
00012943119i[CPU0 ] | SEG sltr(index|ti|rpl)     base    limit G D
00012943119i[CPU0 ] |  CS:002b( 0005| 0|  3) 00000000 ffffffff 1 0
00012943119i[CPU0 ] |  DS:0010( 0002| 0|  0) 00000000 ffffffff 1 1
00012943119i[CPU0 ] |  SS:0033( 0006| 0|  3) 00000000 ffffffff 1 1
00012943119i[CPU0 ] |  ES:0000( 0005| 0|  0) 00000000 0000ffff 0 0
00012943119i[CPU0 ] |  FS:0000( 0005| 0|  0) 00000000 0000ffff 0 0
00012943119i[CPU0 ] |  GS:0000( 0005| 0|  0) 00000000 0000ffff 0 0
00012943119i[CPU0 ] |  MSR_FS_BASE:0000000000000000
00012943119i[CPU0 ] |  MSR_GS_BASE:0000000000000000
00012943119i[CPU0 ] | RIP=0000000000007d22 (0000000000007d22)
00012943119i[CPU0 ] | CR0=0xe0000011 CR2=0x0000000000007d22
00012943119i[CPU0 ] | CR3=0x00070000 CR4=0x00000020
00012943119i[CPU0 ] 0x0000000000007d22>> pop rax : 58
00012943119i[CMOS ] Last time is 1268934522 (Thu Mar 18 18:48:42 2010)
00012943119i[     ] restoring default signal behavior
========================================================================
Bochs is exiting with the following message:
[CPU0 ] interrupt(long mode): IDT entry extended attributes DWORD4 TYPE != 0
========================================================================
00012943119i[CTRL ] quit_sim called with exit code 1

Bochs is exiting. Press ENTER when you're ready to close this window.
    

i dont have idt, i just want to fix this error. interrupts i use later, now long mode.
Post 18 Mar 2010, 17:48
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a115433



Joined: 05 Mar 2010
Posts: 144
a115433
i have the answer. u/s bit in PDE was 0.
and in paging all bits no matter what controlling must agree in the way to physical address.
Post 19 Mar 2010, 13:26
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