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Stack smashing protection, cursor, and more

This commit is contained in:
Julian Barathieu 2019-04-21 21:18:13 +02:00
parent c0507e2128
commit bf10ff85f8
23 changed files with 381 additions and 225 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
Makefile
View File

@ -51,7 +51,7 @@ ifeq ($(mode), debug)
CFLAGS += -g
endif
KCC=$(CCNAME) $(COPTIM) $(CWARNS) $(CFLAGS) $(CINCLUDES) -D_OSK_SOURCE -D_KALEID_KERNEL
KCC=$(CCNAME) $(COPTIM) $(CWARNS) $(CFLAGS) $(CINCLUDES) -D_OSK_SOURCE -D_KALEID_KERNEL -fstack-protector-all
# Folders
MBRDIR=boot/grub
@ -75,7 +75,7 @@ NC='\033[1;37m'
## SOURCES INSCRIPTION-------------------------------------------------------- #
# Lib C sources
LibCSources= libc/atoi.c libc/itoa.c \
LibCSources = libc/atoi.c libc/itoa.c \
libc/mem.c libc/ctype.c \
libc/rand.c libc/sprintf.c \
libc/status.c libc/string.c \
@ -85,7 +85,7 @@ LibCSources= libc/atoi.c libc/itoa.c \
KernObj=$(patsubst %.c,$(KOBJDIR)/%.o,$(KernSources))
# Kernel sources
KernSources= libbuf/buf.c libbuf/bput.c \
KernSources = libbuf/buf.c libbuf/bput.c \
libbuf/bprint.c kernel/cpu/cpuid.c \
kernel/cpu/idt.c kernel/init/init.c \
kernel/init/table.c kernel/io/cursor.c \
@ -93,6 +93,7 @@ KernSources= libbuf/buf.c libbuf/bput.c \
kernel/ke/panic.c kernel/mm/map.c \
kernel/mm/heap.c kernel/mm/malloc.c \
kernel/mm/gdt.c kernel/ps/sched.c \
kernel/init/info.c kernel/init/ssp.c \
LibCObj=$(patsubst %.c,$(KOBJDIR)/%.o,$(LibCSources))

16
ProjectTree
View File

@ -63,7 +63,9 @@
│   │   │   │   ├── cpuid.o
│   │   │   │   └── idt.o
│   │   │   ├── init
│   │   │   │   ├── info.o
│   │   │   │   ├── init.o
│   │   │   │   ├── ssp.o
│   │   │   │   └── table.o
│   │   │   ├── io
│   │   │   │   ├── cursor.o
@ -84,16 +86,8 @@
│   │   │   └── buf.o
│   │   └── libc
│   │   ├── atoi.o
│   │   ├── atoi.o.1
│   │   ├── atoi.o.2
│   │   ├── atoi.o.3
│   │   ├── atoi.o.4
│   │   ├── ctype.o
│   │   ├── itoa.o
│   │   ├── itoa.o.1
│   │   ├── itoa.o.2
│   │   ├── itoa.o.3
│   │   ├── itoa.o.4
│   │   ├── mem.o
│   │   ├── rand.o
│   │   ├── sprintf.o
@ -122,11 +116,11 @@
│   │   ├── base.h
│   │   ├── boot.h
│   │   ├── cpu.h
│   │   ├── cursor.h
│   │   ├── heap.h
│   │   ├── iomisc.h
│   │   ├── mboot.h
│   │   ├── mm.h
│   │   ├── panic.h
│   │   ├── proc.h
│   │   └── sched.h
│   ├── kalbase.h
@ -141,7 +135,9 @@
│   │   │   ├── cpuid.c
│   │   │   └── idt.c
│   │   ├── init
│   │   │   ├── info.c
│   │   │   ├── init.c
│   │   │   ├── ssp.c
│   │   │   └── table.c
│   │   ├── io
│   │   │   ├── ata.inc
@ -178,4 +174,4 @@
├── ProjectTree
└── README.md
37 directories, 116 files
37 directories, 112 files

4
include/base/bdefs.h
View File

@ -39,6 +39,10 @@
#define NULL 0L
#endif
#ifndef RAND_MAX
#define RAND_MAX (1 << 30)
#endif
#ifndef INITOK
#define INITOK ((unsigned int)0xCAFEBABE)
#endif

29
include/base/crtlib.h
View File

@ -226,22 +226,25 @@ enum
_LW = _SH(10), // lower alpha
};
#define DEC_CTYPE_FUNC(name, flag) \
#define _DECF(name, flag) \
static inline bool name(int __c) \
{ return isascii(__c) ? !!(__ctype[__c] & flag) : 0; }
DEC_CTYPE_FUNC(iscntrl, _CT);
DEC_CTYPE_FUNC(isprint, _PR);
DEC_CTYPE_FUNC(isgraph, _GR);
DEC_CTYPE_FUNC(isdigit, _DG);
DEC_CTYPE_FUNC(isspace, _SP);
DEC_CTYPE_FUNC(isblank, _BK);
DEC_CTYPE_FUNC(ispunct, _PT);
DEC_CTYPE_FUNC(isalpha, _AL);
DEC_CTYPE_FUNC(isupper, _UP);
DEC_CTYPE_FUNC(islower, _LW);
DEC_CTYPE_FUNC(isxdigit, _DX);
DEC_CTYPE_FUNC(isalnum, (_AL|_DG));
_DECF(iscntrl, _CT);
_DECF(isprint, _PR);
_DECF(isgraph, _GR);
_DECF(isdigit, _DG);
_DECF(isspace, _SP);
_DECF(isblank, _BK);
_DECF(ispunct, _PT);
_DECF(isalpha, _AL);
_DECF(isupper, _UP);
_DECF(islower, _LW);
_DECF(isxdigit, _DX);
_DECF(isalnum, (_AL|_DG));
#undef _SH
#undef _DECF
//------------------------------------------//

4
include/extras/buf.h
View File

@ -109,4 +109,8 @@ error_t BPutOnBuf(Buffer_t *, uchar);
error_t BPrintOnBuf(Buffer_t *, const char *fmt, ...);
error_t BPrintOnBufV(Buffer_t *, const char *fmt, va_list);
error_t bputc(Buffer_t *buf, uchar ch);
error_t bprintf(Buffer_t *buf, const char *fmt, ...);
error_t vbprintf(Buffer_t *buf, const char *fmt, va_list ap);
#endif

4
include/extras/locks.h
View File

@ -28,10 +28,6 @@
#ifdef _KALEID_KERNEL
#ifndef _KALKERN_PANIC_H
#include <kernel/panic.h>
#endif
#ifndef _KALKERN_SCHED_H
#include <kernel/sched.h>
#endif

6
include/kernel/base.h
View File

@ -126,10 +126,8 @@ void DebugLog(const char *, ...);
//------------------------------------------//
// Needed by basically everyone
#ifndef _KALEXTRAS_LOCKS_H
#include <extras/locks.h>
#endif
extern volatile bool KeIsPanicking;
noreturn void KeStartPanic(const char *, ...);
//------------------------------------------//

42
include/kernel/panic.h → include/kernel/cursor.h
View File

@ -1,7 +1,7 @@
//----------------------------------------------------------------------------//
// GNU GPL OS/K //
// //
// Desc: Kernel panic and crash stuff //
// Desc: Cursor-related functions //
// //
// //
// Copyright © 2018-2019 The OS/K Team //
@ -26,41 +26,15 @@
#include <kernel/base.h>
#endif
#ifndef _KALKERN_PANIC_H
#define _KALKERN_PANIC_H
#ifndef _KALKERN_CURSOR_H
#define _KALKERN_CURSOR_H
//------------------------------------------//
//----------------------------------------------------------------------------//
#define PANICSTR_SIZE 1024
extern volatile bool KeIsPanicking;
void IoEnableCursor(void);
void IoDisableCursor(void);
void IoUpdateCursor(int x, int y);
//------------------------------------------//
//----------------------------------------------------------------------------//
//
// Disable IRQs
//
#define KeDisableIRQs() asm volatile ("cli")
//
// Enable IRQs
//
#define KeEnableIRQs() asm volatile ("sti")
//
// Pause CPU until next interuption
// !!! Enables IRQs !!!
//
#define KePauseCPU() asm volatile ("sti\n\thlt")
//
// Halt the CPU indefinitely
//
#define KeHaltCPU() do { asm volatile ("hlt"); } while (1)
//------------------------------------------//
noreturn void KeStartPanic(const char *, ...);
noreturn void KeCrashSystem(void);
//------------------------------------------//
#endif

4
include/kernel/heap.h
View File

@ -26,8 +26,8 @@
#include <kernel/base.h>
#endif
#ifndef _KALKERN_MM_H
#define _KALKERN_MM_H
#ifndef _KALKERN_HEAP_H
#define _KALKERN_HEAP_H
//------------------------------------------//

99
include/kernel/iomisc.h
View File

@ -29,33 +29,96 @@
#ifndef _KALKERN_IOMISC_H
#define _KALKERN_IOMISC_H
//------------------------------------------//
// IRQ-related stuff //
//------------------------------------------//
static inline
void IoWriteByteOnPort(port_t port, port_t val)
{
KalAssert(FALSE && ENOSYS);
(void)port;
(void)val;
//
// Returns whether IRQs are enabled
//
static inline bool KeCheckIRQStatus(void) {
ulong flags;
asm volatile ("pushf\n\tpop %0" : "=g"(flags) );
return flags & (1 << 9);
}
static inline
uchar IoReadByteFromPort(port_t port)
{
KalAssert(FALSE && ENOSYS);
(void)port;
return 0;
//
// Disables IRQs
//
#define KeDisableIRQs() asm volatile ("cli")
//
// Enables IRQs
//
#define KeEnableIRQs() asm volatile ("sti")
//
// Disables IRQs, but saves its previous state
//
static inline ulong KePauseIRQs(void) {
ulong flags;
asm volatile ("pushf\n\tcli\n\tpop %0" : "=r"(flags) : : "memory");
return flags;
}
static inline
ushort IoReadWordFromPort(port_t port)
{
KalAssert(FALSE && ENOSYS);
(void)port;
return 0;
//
// Restore IRQ flag to its state before KePauseIRQs
//
#define KeRestoreIRQs(flags) asm("push %0\n\tpopf" : : "rm"(flags) : "memory","cc")
//------------------------------------------//
// 101 ways to hang the system //
//------------------------------------------//
//
// Pauses CPU until next interuption
//
#define KePauseCPU() asm volatile ("sti\n\thlt")
//
// Halts the CPU indefinitely
//
#define KeHaltCPU() do { asm volatile ("hlt"); } while (1)
//
// Halts the system, making sure it won't recover
//
#define KeCrashSystem() do { KeDisableIRQs(); KeHaltCPU(); } while (1)
//------------------------------------------//
// Ports I/O //
//------------------------------------------//
static inline void IoWriteByteOnPort(port_t port, uchar val)
{ asm volatile ("outb %1, %0" : : "dN" (port), "a" (val)); }
static inline uchar IoReadByteFromPort(port_t port) {
uchar ret;
asm volatile ("inb %1, %0" : "=a"(ret) : "Nd"(port));
return ret;
}
static inline ushort IoReadWordFromPort(port_t port) {
ushort ret;
asm volatile ("inw %1, %0" : "=a"(ret) : "Nd"(port));
return ret;
}
static inline ushort IoReadDWordFromPort(port_t port) {
uint ret;
asm volatile ("inl %1, %0" : "=a"(ret) : "Nd"(port));
return ret;
}
//------------------------------------------//
// Misc. I/O //
//------------------------------------------//
//
// Wait for completion of some I/O operation
// Port 0x80 is used for 'checkpoints' during POST
//
#define IoWaitCompletion() IoWriteByteOnPort(0x80, 0)
#endif

4
include/kernel/mboot.h
View File

@ -23,6 +23,10 @@
// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
//----------------------------------------------------------------------------//
#ifndef _KALKERN_BASE_H
#include <kernel/base.h>
#endif
#ifndef MULTIBOOT_HEADER
#define MULTIBOOT_HEADER 1

18
include/kernel/mm.h
View File

@ -26,6 +26,11 @@
#include <kernel/base.h>
#endif
#ifndef _KALKERN_MM_H
#define _KALKERN_MM_H
//----------------------------------------------------------------------------//
#define MINIMUM_RAM_SIZE 16 // Mio, the minimum RAM size.
#define AVAILABLE_ZONE 1 // Fully usable RAM zone
@ -34,14 +39,14 @@
#define NVS_ZONE 4 // Dunno
#define BADRAM_ZONE 5 // Invalid zone because material problem...
#define MAX_ENTRIES 2048 // Max number of memory map entries
// -------------------------------------------------------------------------- //
typedef struct MemoryMap_t MemoryMap_t;
typedef struct MapEntry_t MapEntry_t;
typedef struct GdtEntry_t GdtEntry_t;
typedef struct GdtPtr_t GdtPtr_t;
// -------------------------------------------------------------------------- //
//----------------------------------------------------------------------------//
// The entry structure of the map
struct MapEntry_t {
void *addr;
@ -73,10 +78,9 @@ struct GdtPtr_t
{
uchar limit; // upper 16 bits
ushort base; // address of the first entry
}
__attribute__((__packed__));
} __attribute__((__packed__));
// -------------------------------------------------------------------------- //
//----------------------------------------------------------------------------//
//
// Initializes the memory map structure
@ -109,4 +113,6 @@ void MmInitGdt(void);
//
extern void MmLoadGdt(GdtPtr_t *GdtPtr);
// -------------------------------------------------------------------------- //
//----------------------------------------------------------------------------//
#endif

120
kaleid/kernel/init/info.c Normal file
View File

@ -0,0 +1,120 @@
//----------------------------------------------------------------------------//
// GNU GPL OS/K //
// //
// Desc: Initialization of boot info //
// //
// //
// Copyright © 2018-2019 The OS/K Team //
// //
// This file is part of OS/K. //
// //
// OS/K is free software: you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation, either version 3 of the License, or //
// any later version. //
// //
// OS/K is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY//without even the implied warranty of //
// MERCHANTABILITY or FITNESS 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 OS/K. If not, see <https://www.gnu.org/licenses/>. //
//----------------------------------------------------------------------------//
#include <kernel/boot.h>
#include <kernel/mboot.h>
//
// BootInfo_t initialization. It is necessary because grub will potentially be
// wiped since it is below 1MB.... And we must reorganize all that stuff.
//
void BtInitBootInfo(multiboot_info_t *mbi)
{
extern ulong MB_header;
extern ulong newKernelEnd;
// We need the multiboot structure
KalAlwaysAssert(mbi);
//Retrieves the bootloader flags to ensure infos are valid
BtLoaderInfo.grubFlags = mbi->flags;
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_BOOT_LOADER_NAME) {
BtLoaderInfo.grubName = (char*)(ulong)(mbi->boot_loader_name);
BtLoaderInfo.kernelAddr = (void*)&MB_header;
BtLoaderInfo.kernelEndAddr = (void*)newKernelEnd;
BtLoaderInfo.valid = 1;
}
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_MODS) {
BtLoaderInfo.modulesCount = mbi->mods_count;
BtLoaderInfo.modulesAddr = (void*)(ulong)mbi->mods_addr;
}
//Retrieves the drives informations
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_DRIVE_INFO) {
BtBootTab.drives.bufferLength = mbi->drives_length;
BtBootTab.drives.bufferAddr = (void*)(ulong)mbi->drives_addr;
BtBootTab.drives.bufferValid = 1;
}
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_BOOTDEV) {
BtBootTab.drives.bootDrv = mbi->boot_device;
BtBootTab.drives.drvValid = 1;
}
//Retrieves the memory informations
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_MEMORY) {
BtMemoryInfo.lowMemory = mbi->mem_lower;
BtMemoryInfo.upMemory = mbi->mem_upper;
BtMemoryInfo.memValid = 1;
}
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_MEM_MAP) {
BtMemoryInfo.mapAddr = (void*)(ulong)mbi->mmap_addr;
BtMemoryInfo.mapLength = mbi->mmap_length;
BtMemoryInfo.mapValid = 1;
}
// Retrieves video mode informations
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_VBE_INFO) {
BtVideoInfo.vbeControl = (void*)(ulong)mbi->vbe_control_info;
BtVideoInfo.vbeModeInfo = (void*)(ulong)mbi->vbe_mode_info;
BtVideoInfo.vbeMode = mbi->vbe_mode;
BtVideoInfo.vbeInterfaceSeg = mbi->vbe_interface_seg;
BtVideoInfo.vbeInterfaceOff = mbi->vbe_interface_off;
BtVideoInfo.vbeInterfaceLen = mbi->vbe_interface_len;
BtVideoInfo.vbeValid = 1;
}
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_FRAMEBUFFER_INFO) {
BtVideoInfo.framebufferAddr = (void*)mbi->framebuffer_addr;
BtVideoInfo.framebufferPitch = mbi->framebuffer_pitch;
BtVideoInfo.framebufferWidth = mbi->framebuffer_width;
BtVideoInfo.framebufferHeight= mbi->framebuffer_height;
BtVideoInfo.framebufferBpp = mbi->framebuffer_bpp;
BtVideoInfo.framebufferType = mbi->framebuffer_type;
BtVideoInfo.fbuValid = 1;
}
// Retrieves the firmware infos
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_CONFIG_TABLE) {
BtFirmwareInfo.romTable = mbi->config_table;
BtFirmwareInfo.romValid = 1;
}
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_APM_TABLE) {
BtFirmwareInfo.apmTable = mbi->apm_table;
BtFirmwareInfo.apmValid = 1;
}
}
void BtDoSanityChecks(uint mbMagic) {
uint tmp;
if (!(mbMagic == MULTIBOOT_BOOTLOADER_MAGIC))
KeStartPanic("[Init] Magic number %x is incorrect\n", mbMagic);
tmp = (BtLoaderInfo.kernelEndAddr
- BtLoaderInfo.kernelAddr) / KB;
DebugLog("[Init] Kernel successfully loaded at %p with %x magic\n"
" and it uses %d Kio\n\n",
BtLoaderInfo.kernelAddr,
mbMagic,tmp);
}

120
kaleid/kernel/init/init.c
View File

@ -23,118 +23,27 @@
//----------------------------------------------------------------------------//
#include <extras/buf.h>
#include <kernel/iomisc.h>
#include <kernel/cursor.h>
#include <kernel/mboot.h>
#include <kernel/panic.h>
#include <kernel/sched.h>
#include <kernel/heap.h>
#include <kernel/boot.h>
#include <kernel/mm.h>
//
// BootInfo_t initialization. It is necessary because grub will potentially be
// wiped since it is below 1MB.... And we must reorganize all that stuff.
//
void BtInitBootInfo(multiboot_info_t *mbi)
{
extern ulong MB_header;
extern ulong newKernelEnd;
// info.c
extern void BtDoSanityChecks(uint mbMagic);
extern void BtInitBootInfo(multiboot_info_t *mbi);
// We need the multiboot structure
KalAlwaysAssert(mbi);
//Retrieves the bootloader flags to ensure infos are valid
BtLoaderInfo.grubFlags = mbi->flags;
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_BOOT_LOADER_NAME) {
BtLoaderInfo.grubName = (char*)(ulong)(mbi->boot_loader_name);
BtLoaderInfo.kernelAddr = (void*)&MB_header;
BtLoaderInfo.kernelEndAddr = (void*)newKernelEnd;
BtLoaderInfo.valid = 1;
}
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_MODS) {
BtLoaderInfo.modulesCount = mbi->mods_count;
BtLoaderInfo.modulesAddr = (void*)(ulong)mbi->mods_addr;
}
//Retrieves the drives informations
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_DRIVE_INFO) {
BtBootTab.drives.bufferLength = mbi->drives_length;
BtBootTab.drives.bufferAddr = (void*)(ulong)mbi->drives_addr;
BtBootTab.drives.bufferValid = 1;
}
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_BOOTDEV) {
BtBootTab.drives.bootDrv = mbi->boot_device;
BtBootTab.drives.drvValid = 1;
}
//Retrieves the memory informations
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_MEMORY) {
BtMemoryInfo.lowMemory = mbi->mem_lower;
BtMemoryInfo.upMemory = mbi->mem_upper;
BtMemoryInfo.memValid = 1;
}
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_MEM_MAP) {
BtMemoryInfo.mapAddr = (void*)(ulong)mbi->mmap_addr;
BtMemoryInfo.mapLength = mbi->mmap_length;
BtMemoryInfo.mapValid = 1;
}
// Retrieves video mode informations
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_VBE_INFO) {
BtVideoInfo.vbeControl = (void*)(ulong)mbi->vbe_control_info;
BtVideoInfo.vbeModeInfo = (void*)(ulong)mbi->vbe_mode_info;
BtVideoInfo.vbeMode = mbi->vbe_mode;
BtVideoInfo.vbeInterfaceSeg = mbi->vbe_interface_seg;
BtVideoInfo.vbeInterfaceOff = mbi->vbe_interface_off;
BtVideoInfo.vbeInterfaceLen = mbi->vbe_interface_len;
BtVideoInfo.vbeValid = 1;
}
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_FRAMEBUFFER_INFO) {
BtVideoInfo.framebufferAddr = (void*)mbi->framebuffer_addr;
BtVideoInfo.framebufferPitch = mbi->framebuffer_pitch;
BtVideoInfo.framebufferWidth = mbi->framebuffer_width;
BtVideoInfo.framebufferHeight= mbi->framebuffer_height;
BtVideoInfo.framebufferBpp = mbi->framebuffer_bpp;
BtVideoInfo.framebufferType = mbi->framebuffer_type;
BtVideoInfo.fbuValid = 1;
}
// Retrieves the firmware infos
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_CONFIG_TABLE) {
BtFirmwareInfo.romTable = mbi->config_table;
BtFirmwareInfo.romValid = 1;
}
if (BtLoaderInfo.grubFlags & MULTIBOOT_INFO_APM_TABLE) {
BtFirmwareInfo.apmTable = mbi->apm_table;
BtFirmwareInfo.apmValid = 1;
}
}
void BtInitSanity(uint mbMagic){
uint tmp;
KernLog("%c%c%c OS/K\n \n", 219, 219, 219);
if (!(mbMagic == MULTIBOOT_BOOTLOADER_MAGIC))
KeStartPanic("[Init] Magic number %x is incorrect\n", mbMagic);
tmp = (BtLoaderInfo.kernelEndAddr
- BtLoaderInfo.kernelAddr) / KB;
DebugLog("[Init] Kernel successfully loaded at %p with %x magic\n"
" and it uses %d Kio\n\n",
BtLoaderInfo.kernelAddr,
mbMagic,tmp);
}
extern void pstest(void);
// io/vga.c
extern error_t IoInitVGABuffer(void);
// ps/proc.c test function
extern void pstest(void);
//
// Entry point of the Kaleid kernel
//
noreturn void BtStartKern(multiboot_info_t *mbInfo, uint mbMagic)
{
// We're not ready to deal with interrupts
KeDisableIRQs();
// Initialize the BootInfo_t structure
@ -142,14 +51,21 @@ noreturn void BtStartKern(multiboot_info_t *mbInfo, uint mbMagic)
// Screen I/O available from this point on
IoInitVGABuffer();
IoEnableCursor();
IoUpdateCursor(0, 0);
// Sanity checks and hello world
BtInitSanity(mbMagic);
//KernLog("%c%c%c OS/K\n\n", 219, 219, 219);
KernLog("OS/K\n\n");
// Sanity checks
BtDoSanityChecks(mbMagic);
// Memory & scheduler
MmInitMemoryMap();
MmInitHeap();
PsInitSched();
KernLog("Cursor test:");
// End this machine's suffering
BFlushBuf(BStdOut);

33
kaleid/kernel/init/ssp.c Normal file
View File

@ -0,0 +1,33 @@
//----------------------------------------------------------------------------//
// GNU GPL OS/K //
// //
// Desc: Stack smashing protection //
// //
// //
// Copyright © 2018-2019 The OS/K Team //
// //
// This file is part of OS/K. //
// //
// OS/K is free software: you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation, either version 3 of the License, or //
// any later version. //
// //
// OS/K is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY//without even the implied warranty of //
// MERCHANTABILITY or FITNESS 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 OS/K. If not, see <https://www.gnu.org/licenses/>. //
//----------------------------------------------------------------------------//
#include <kernel/base.h>
ulong __stack_chk_guard = 0x447c0ffe4dbf9e55;
noreturn void __stack_chk_fail(void)
{
KeStartPanic("Stack smashed!");
}

29
kaleid/kernel/io/cursor.c
View File

@ -21,3 +21,32 @@
// You should have received a copy of the GNU General Public License //
// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
//----------------------------------------------------------------------------//
#include <kernel/boot.h>
#include <kernel/cursor.h>
#include <kernel/iomisc.h>
void IoEnableCursor(void)
{
IoWriteByteOnPort(0x3D4, 0xA);
IoWriteByteOnPort(0x3D5, (IoReadByteFromPort(0x3D5) & 0xC0));
IoWriteByteOnPort(0x3D4, 0xB);
IoWriteByteOnPort(0x3D5, (IoReadByteFromPort(0x3D5) & 0xE0) | 15);
}
void IoDisableCursor(void)
{
IoWriteByteOnPort(0x3D4, 0x0A);
IoWriteByteOnPort(0x3D5, 0x20);
}
void IoUpdateCursor(int x, int y)
{
const ushort pos = y * BtVideoInfo.framebufferWidth + x;
IoWriteByteOnPort(0x3D4, 0x0F);
IoWriteByteOnPort(0x3D5, (pos & 0xFF));
IoWriteByteOnPort(0x3D4, 0x0E);
IoWriteByteOnPort(0x3D5, ((pos >> 8) & 0xFF));
}

23
kaleid/kernel/io/vga.c
View File

@ -24,6 +24,7 @@
#include <extras/buf.h>
#include <kernel/boot.h>
#include <kernel/cursor.h>
//----------------------------------------------------------//
// Internal functions for VGA terminals //
@ -43,16 +44,29 @@
error_t bvgaflusher(Buffer_t *buf)
{
ushort *fbp = BtVideoInfo.framebufferAddr;
const uchar color = 0xf;
uchar color = 0xf;
uchar *currentLine = buf->wp - buf->lineLen - buf->lastLF;
uchar *ptr = (uchar *)lmax((size_t)buf->buf,
(size_t)currentLine
- (buf->nLines - 1) * buf->lineLen);
uchar *bufStart = (uchar *)lmax((size_t)buf->buf,
(size_t)currentLine
- (buf->nLines - 1) * buf->lineLen);
uchar *ptr = bufStart;
// Writes the buffer's content
for (; ptr < buf->wp ; ptr++) {
*fbp++ = VGA_ComputeEntry(*ptr, color);
}
// Update the cursor
size_t curX = ((size_t)ptr - (size_t)bufStart) % buf->lineLen;
size_t curY = ((size_t)ptr - (size_t)bufStart) / buf->lineLen;
IoUpdateCursor(curX, curY);
// Empty the rest of the buffer
const size_t bufSize = buf->nLines * buf->lineLen;
ushort *fbe = BtVideoInfo.framebufferAddr
@ -62,6 +76,7 @@ error_t bvgaflusher(Buffer_t *buf)
const ushort filler = VGA_ComputeEntry(' ', color);
while (fbp < fbe) *fbp++ = filler;
}
return EOK;
}

18
kaleid/kernel/ke/panic.c
View File

@ -24,8 +24,7 @@
#include <extras/buf.h>
#include <kernel/proc.h>
#include <kernel/sched.h>
#include <kernel/panic.h>
#include <kernel/iomisc.h>
error_t vbprintf(Buffer_t *buf, const char *fmt, va_list ap);
@ -63,7 +62,7 @@ noreturn void KeStartPanic(const char *fmt, ...)
}
if (KeIsPanicking) {
vbprintf(BStdOut, "\nDouble panic!", NULL);
bprintf(BStdOut, "\nDouble panic!");
KeHaltCPU();
}
@ -72,7 +71,7 @@ noreturn void KeStartPanic(const char *fmt, ...)
// We don't check vbprintf's output
// If it fails, what could we do anyway?
vbprintf(BStdOut, "\nPanic!\n\n", NULL);
bprintf(BStdOut, "\nPANIC\n");
va_start(ap, fmt);
vbprintf(BStdOut, fmt, ap);
@ -83,14 +82,3 @@ noreturn void KeStartPanic(const char *fmt, ...)
KeHaltCPU();
}
//
// Oh well
//
noreturn void KeCrashSystem(void)
{
while (1) {
KeDisableIRQs();
KeHaltCPU();
}
}

1
kaleid/kernel/mm/heap.c
View File

@ -24,6 +24,7 @@
#include <kernel/mm.h>
#include <kernel/heap.h>
#include <extras/locks.h>
// Least address out of the heap
static void *_heap_end;

5
kaleid/kernel/ps/sched.c
View File

@ -25,6 +25,7 @@
#include <extras/list.h>
#include <kernel/proc.h>
#include <kernel/sched.h>
#include <kernel/iomisc.h>
//
// For test purpose only
@ -382,12 +383,12 @@ void pstest(void)
KernLog("\nRegular: ");
PrintList(ReglPrioProcs);
KernLog("\nIdle:");
KernLog("\nIdle: ");
PrintList(IdlePrioProcs);
int tick = 0;
while (tick < 24) {
while (tick < 14) {
//if (tick%25==0)ClearTerm(StdOut);
if (tick > 0 && tick != 50 && tick % 10 == 0) {
KernLog("Blocking current process\n");

15
kaleid/libbuf/bprint.c
View File

@ -25,9 +25,6 @@
#include <extras/buf.h>
#include <extras/locks.h>
error_t bputc(Buffer_t *buf, uchar ch);
error_t vbprintf(Buffer_t *buf, const char *fmt, va_list ap);
//
// Prints formatted string on buf according to fmt
//
@ -56,6 +53,18 @@ error_t BPrintOnBufV(Buffer_t *buf, const char *fmt, va_list ap)
return rc;
}
error_t bprintf(Buffer_t *buf, const char *fmt, ...)
{
error_t rc;
va_list ap;
va_start(ap, fmt);
rc = vbprintf(buf, fmt, ap);
va_end(ap);
return rc;
}
//
// Prints 0 for octal, 0x for hexadecimal, 0b for binary
//

2
kaleid/libbuf/bput.c
View File

@ -25,8 +25,6 @@
#include <extras/buf.h>
#include <extras/locks.h>
error_t bputc(Buffer_t *buf, uchar ch);
//
// Writes a character on a buffer
//

3
kaleid/libc/rand.c
View File

@ -24,9 +24,6 @@
#include <kalbase.h>
// XXX Move to header
#define RAND_MAX (1 << 30)
//
// Seed value
//