구차니의 잡동사니 모음

} 

$ ./a.out

#include <stdint.h>를 넣지 않으면 에러가 발생한다.

$ gcc size.c

size.c: In function ‘main’:

size.c:6:2: error: unknown type name ‘int64_t’

These -m switches are supported in addition to the above on AMD x86-64 processors in 64-bit environments.

-m32

-m64

Generate code for a 32-bit or 64-bit environment. The 32-bit environment sets int, long and pointer to 32 bits and generates code that runs on any i386 system. The 64-bit environment sets int to 32 bits and long and pointer to 64 bits and generates code for AMD's x86-64 architecture. 

[링크 : https://gcc.gnu.org/onlinedocs/gcc-3.1/gcc/i386-and-x86-64-Options.html]

$ gcc -m32 void.c

In file included from /usr/include/stdio.h:28:0,

                 from void.c:1:

/usr/include/features.h:324:26: fatal error: bits/predefs.h: No such file or directory

compilation terminated.

$ sudo apt-get install gcc-multilib

[링크 : http://uce.uniovi.es/tips/Programming/Cpp/forc32bitscompilation.html] 

[링크 : http://stackoverflow.com/questions/22355436/how-to-compile-32-bit-apps-on-64-bit-ubuntu]

4.3.3 ‘Implicit CR in every LF’

Most servers send two control characters, CR and LF, to start a new line of the screen. The CR character makes the cursor return to the left-hand side of the screen. The LF character makes the cursor move one line down (and might make the screen scroll).

Some servers only send LF, and expect the terminal to move the cursor over to the left automatically. If you come across a server that does this, you will see a stepped effect on the screen, like this:

First line of text
                  Second line
                             Third line

If this happens to you, try enabling the ‘Implicit CR in every LF’ option, and things might go back to normal:

First line of text
Second line
Third line

4.3.4 ‘Implicit LF in every CR’

Most servers send two control characters, CR and LF, to start a new line of the screen. The CR character makes the cursor return to the left-hand side of the screen. The LF character makes the cursor move one line down (and might make the screen scroll).

Some servers only send CR, and so the newly written line is overwritten by the following line. This option causes a line feed so that all lines are displayed.

[링크 : http://tartarus.org/~simon/putty-snapshots/htmldoc/Chapter4.html]

Zero-length arrays are allowed in GNU C. They are very useful as the last element of a structure that is really a header for a variable-length object:

struct line

{

int length;

char contents[0];

};

struct line *thisline = (struct line *)malloc (sizeof (struct line) + this_length);

thisline->length = this_length;

[링크 : https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html] 

# Menuet32 kernel setup

#

# This file lists the video, mouse and RAM setup that the kernel will use.

# Blank lines, or lines beginning with # are ignored - they are comments.

# The format for each line is: [KERNEL PARAMETER] value

# The allowable values for 'KERNEL PARAMETER' and corresponding 'value' are

# defined below. The file may be Unix or DOS format; <cr>s are ignored.

# A value of 0 => ask the user

# Select the video mode to use: there are 3 basic groups.

# Specify a value within the appropriate group.

# Vesa 2.0+ 16 M LFB:  {1} 640x480, {2} 800x600, {3} 1024x768, {4} 1280x1024

# Vesa 1.2  16 M Bnk:  {5} 640x480, {6} 800x600, {7} 1024x768, {8} 1280x1024

# EGA/CGA   256 Cols:  {9} 320x200, {A} VGA: 16 Color 640x480.

# {9} => VGA mode 0x13. {A} => VGA mode 0x12.

[VIDEO] 0

# Direct LFB write, paging (available VESA 2+ only)

# Use predefined settings or probe video mode.

# Probing enabled {1} no, {2} yes.

[PROBE] 0

# Hardware accelerated graphics

# Vesa 2.0+ (only): MTRR graphics acceleration {1} yes, {2} no.

[VACCEL] 0

# Mouse at: {1} PS/2 (USB), {2} Com1, {3} Com2.

[MOUSE] 0

# Amount of RAM (MB) available on the system

# {1} 32, {2} 64, {3} 128, {4} 256, {5} 512,{6} 1024, {7} 2048.

[RAM] 0

# Cached information from floppy or hard disk (boot device)

# When floppy is selected, the entire disk is copied to RAM as a RAM_Disk (/RD)

# Load disk image from: {1} floppy (default), {2} hd/msetup.exe (hdboot.txt), 

# {3} use preloaded ram-image from kernel restart.

[RSOURCE] 0 

#

#  MenuetOS 64 configuration

#

config_version          = 0x000025   # For kernel.

# Default screen resolution

screen_resolution       = 0x000002   # 1 = 640x480  , 2 = 800x600

                                     # 3 = 1024x768 , 4 = 1280x1024

                                     # 5 = 1440x900 , 9 = Custom

# Custom resolution must be supported by both

# graphics card and display.

custom_res_x            = 00000000   # Custom X resolution

custom_res_y            = 00000000   # Custon Y resolution

# PS/2 Mouse settings

mouse_scroll_wheel      = 0x000000   # 0/1 = disabled/enabled

# Window transparency

#

# 512MB of RAM required for resolutions up to 1280x1024.

# 1GB of RAM required for HD resolutions.

# Define with parameter amount_of_ram.

window_transparency     = 0x000001   # 0 = Disabled

                                     # 1 = Enabled for Title and Frames

                                     # 2 = Enabled for Title, Menu and Frames

transparency_opacity    = 0x000002   # 0 = 75:25, 1 = 50:50, 2 = 25:75

# Memory

#

# 128 MB required (0x080)

amount_of_ram           = 0x000200   # 0x100 = 256 MB, 0x200 = 512 MB

# Verify the amount for ram from Bios

ram_verify              = 0x000001   # 0x000 = Disabled, 0x001 = Enabled

# Verify OS memory map from Bios

#

# Map:0x8000-0x58000,1M-14M,16M-amount_of_ram

map_verify              = 0x000001   # 0x000 = Disabled, 0x001 = Enabled

# Memory acceleration

#

# Mtrr_default works without defining mtrr_vesa_lfb or mtrr_mask.

# Some multiprocessor systems require enabling SMP at parameter smp_enable.

# Unstable, if defined by BIOS at bootup.

mtrr_default            = 0x000100   # 0x006 = write-back, 0x100 = disabled

# Graphics acceleration

#

# Mtrr_mask is required for defining mtrr_vesa_lfb

# Unstable, if defined by BIOS at bootup.

mtrr_vesa_lfb           = 0x000100     # 0x001 = write-combine, 0x100 = disabled

mtrr_mask               = 0xffffffff   # 4 Gigabytes (default), CPU dependent

# Mtrr cache writeback

#

# If display update seems late or out of sync, enabling this feature

# results to faster display updates.

mtrr_wbinvd             = 0x000000     # 0x000 = disabled, 0x001 = enabled

# Mtrr cache delay

#

# If display has residuals from mouse or other gui events, increasing 

# this value results to cleaner display updates.

mtrr_delay              = 00000010     # 5-1000ms, default:10ms

# USB 2.0 (ehci)

#

# Webcam, TV/Radio, Printer, Mass storage (read/write, Fat32)

#

# Note: 1) USB Legacy support in BIOS must be disabled, unless

#          the computer boots from USB device. See usb_legacy_disable.

#       2) Sandisk flash drives and regular backups are recommended,

#          since not all of the mass storage functions are supported.

#       3) If motherboard has multiple ehci controllers, the first pci 

#          device is activated.

usb_enable              = 0x000000     # 0x000 = Disabled, 0x001 = Enabled

# USB 2.0 - Disable BIOS legacy support after bootup

#

# If the computer boots from USB drive, enabling this feature

# enables access to USB drive when Menuet is running.

# Not all BIOSs support this feature.

usb_legacy_disable      = 0x000000     # 0x000 = Disabled, 0x001 = Enabled

# USB 2.0 - Ehci driver cache mode

#

# To debug cache coherency between driver and controller.

# 0x000       = Normal     (non-cacheable pages)

# 0x001/0x002 = Invalidate (cache writeback and invalidate,slower)

#                          (0x001/0x002=all cpus/single cpu)

#                          (Amd sb600 and sb700 rev 3a & 3b)

usb_ehci_cache_mode     = 0x000000     # 0x000 = Normal

                                       # 0x001/0x002 = Invalidate

# USB 1.X (ohci/amd - uhci/intel)

#

# USB keyboard and mouse

usb_ohci_enable         = 0x000000     # 0x000 = Disabled, 0x001 = Enabled

usb_uhci_enable         = 0x000000     # 0x000 = Disabled, 0x001 = Enabled

# Display window content while moving

display_window          = 00000001  # 0x000 = Disabled, 0x001 = Enabled

display_interval        = 00000025  # times/second

# Window skin

window_skin             = '/FD/1/SKIN.BMP'

# Fat12 floppy

fd_1_enable             = 0x000001  # 0 = disable, 1 = enable

fd_1_write              = 0x000000  # 0/1 = disable/enable direct write

# Fat32 partition

hd_1_enable             = 0x000000  # 0x000 disabled, 0x001 enabled

hd_1_base               = 0x000000  # 0x1f0 primary, 0x170 secondary

hd_1_id                 = 0x000000  # 0x00 master, 0x10 slave

hd_1_partition          = 0x000001  # 1 first, fixed to first now

hd_1_irq                = 0x000000  # hd 1 irq, not yet implemented

# CD/DVD

cd_1_enable             = 0x000000  # 0x000 disabled, 0x001 enabled

cd_1_base               = 0x000000  # 0x1f0 primary, 0x170 secondary

cd_1_id                 = 0x000000  # 0x00 master, 0x10 slave

cd_1_irq                = 0x000000  # cd 1 irq, not yet implemented

# System directory

system_directory        = '/FD/1/'  # System file location

# Window shape

window_corners          = 0x000000  # 0 = round, 1 = sharp

# Network at boot

network_driver          = '/FD/1/DRIVER/I8254X' # Ethernet driver

network_card_enable     = 0x00000000  # 0/1 = network card disabled/enabled

                                      # When enabled, requires also selecting 

                                      # ethernet interface at network_config

network_ip              = 0x1800a8c0  # 192.168.0.24

network_gateway         = 0x0100a8c0  # 192.168.0.1

network_subnet_mask     = 0x00FFFFFF  # 255.255.255.0

network_dns             = 0x0100a8c0  # 192.168.0.1

network_config          = 0x03f80400  # Bits 16- Com port

                                      # Bits 08- Com IRQ

                                      # Bit  07  Server assigned

                                      # Bits 00- Interface 0=disabled 

                                      #                    3=ethernet

# Audio at boot

audio_driver            = '/FD/1/DRIVER/INTELHDA'

audio_card_enable       = 0x00000000  # 0/1 = audio card disabled/enabled

# Midi at boot

midi_driver             = '/FD/1/DRIVER/MPU401'

midi_card_enable        = 0x00000000  # 0/1 = midi card disabled/enabled

# Graphics

graphics_driver         = '/FD/1/DRIVER/GRX'

graphics_driver_enable  = 00000000   # 0/1 = no/yes

graphics_boot_driver    = 00000000   # 0/1 = vesa/driver

graphics_boot_x         = 00000000   # Driver boot X resolution

graphics_boot_y         = 00000000   # Driver boot Y resolution

graphics_boot_hz        = 00000000   # Driver boot frequency

# Email

email_pop_server        = 'pop.server'

email_pop_user          = 'Username'

email_smtp_server       = 'smtp.server'

email_smtp_user         = 'Username@smtp.server'

# File browser

#

# 00XY - X=Contents(0/1=close/open), Y=Paths(0/1=close/open)

file_browser_setup      = 00000001   # Contents,Paths

# Background at bootup

#

# bmp, png, jpg or gif

# [Default] = Default Menuet background

background              = '/fd/1/bgr.jpg'

# Main Menu Position

#

# 0 = up, 1 = down

main_menu_position      = 0x000001

# Multi-Processor support

#

# Upto 8 processors are supported. Pressing ctrl-alt-pageup

# moves all processes to CPU-0 and disables SMP.

smp_enable              = 0x000000   # 0x000/0x001 = disabled/enabled

# MCE

#

# CPU is disabled at machine check exception 

# (dot at top-left screen)

mce_enable              = 0x000000   # 0x000/0x001 = disabled/enabled

# Keyboard layout

#

# See app kbd-map for values (1=fin,2=eng,3=est,..)

keyboard_layout         = 00000000   # 000 = Default western

# System font default size

system_font_size        = 0x00000A   # Values: 0x009-0x00C

# Font type

#

# 0x000/0x001/0x002 = Upper/Capitalized/Lower

icon_font               = 0x000000   # 0x000-0x002

main_menu_font          = 0x000000   # 0x000-0x002

file_browser_font       = 0x000000   # 0x000-0x002

# Configuration edit delay

configuration_delay     = 0x000003   # Seconds