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Merge pull request #14 from os-k-team/boot 

Boot
This commit is contained in:
Adrien Bourmault 2019-01-15 12:36:29 +01:00 committed by GitHub
parent 425fccd778 22a4e34c2b
commit b9ee8c3897
20 changed files with 382 additions and 73 deletions
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3
COPYING
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@ -672,6 +672,3 @@ may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.
=======

20
Makefile
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@ -25,3 +25,23 @@ tests:
make tests -f Makefile.out.2
rm Makefile.out Makefile.out.2
ASM=nasm
ASMFLAGS=
BOOTFLAGS=-f bin
BOOTDIR=boot
OBJDIR=build/obj
BINDIR=build/bin
boot.mbr.asm: $(BOOTDIR)/mbr.asm $(BOOTDIR)/mbr.inc
$(ASM) $(BOOTFLAGS) $(BOOTDIR)/mbr.asm -o $(OBJDIR)/boot/mbr.bin
boot.loader.asm: $(BOOTDIR)/loader.asm
$(ASM) $(BOOTFLAGS) $(BOOTDIR)/loader.asm -o $(OBJDIR)/boot/loader.bin
bootloader: boot.mbr.asm boot.loader.asm
cp $(OBJDIR)/boot/mbr.bin $(BINDIR)/mbr.bin
cp $(OBJDIR)/boot/loader.bin $(BINDIR)/loader.bin
all: bootloader kernel

16
Makefile.in
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@ -22,10 +22,6 @@ CFLAGS=$(CFLAGS1) $(CFLAGS2) $(SFLAG)
CC=$(CCNAME) $(COPTIM) $(CWARNS) $(CFLAGS) $(CINCLUDES)
ASM=nasm
ASMFLAGS=
BOOTFLAGS=-f bin
BINDIR=./build/bin
OBJDIR=./build/obj
@ -35,18 +31,6 @@ KERNDIR=kaleid/kernel
SYSTDIR=kaleid/system
LINXDIR=kaleid/common/test
all: bootloader kernel
boot.mbr.s: $(BOOTDIR)/mbr.s $(BOOTDIR)/mbr.inc
$(ASM) $(BOOTFLAGS) $(BOOTDIR)/mbr.asm -o $(OBJDIR)/boot/mbr.bin
boot.loader.s: $(BOOTDIR)/loader.s
$(ASM) $(BOOTFLAGS) $(BOOTDIR)/loader.asm -o $(OBJDIR)/boot/loader.bin
bootloader: boot.mbr.s boot.loader.s
cp $(OBJDIR)/boot/mbr.bin $(BINDIR)/mbr.bin
cp $(OBJDIR)/boot/loader.bin $(BINDIR)/loader.bin
//----------------------------------------------------------------------------#
// TESTING MAKEFILE

103
Makefile.out.2 Normal file
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@ -0,0 +1,103 @@
# 1 "./Makefile.in"
# 1 "<built-in>"
# 1 "<command-line>"
# 31 "<command-line>"
# 1 "/usr/include/stdc-predef.h" 1 3 4
# 32 "<command-line>" 2
# 1 "./Makefile.in"
# 11 "./Makefile.in"
# 1 "./build/preproc.h" 1
# 12 "./Makefile.in" 2
CCNAME="/opt/cross-cc/bin/x86_64-elf-gcc"
CC2NAME=gcc
COPTIM=-O2
CWARNS=-Wall -Wextra -Wshadow -Wpedantic
CINCLUDES=-isystem./kaleid/include
CFLAGS1=-std=gnu11 -nostdlib -ffreestanding -mcmodel=large
CFLAGS2=-m64 -masm=intel -mno-red-zone -mno-mmx -mno-sse -mno-sse2
CFLAGS=$(CFLAGS1) $(CFLAGS2) $(SFLAG)
CC=$(CCNAME) $(COPTIM) $(CWARNS) $(CFLAGS) $(CINCLUDES)
ASM=nasm
ASMFLAGS=
BOOTFLAGS=-f bin
BINDIR=./build/bin
OBJDIR=./build/obj
BOOTDIR=boot
COMMDIR=kaleid/common
KERNDIR=kaleid/kernel
SYSTDIR=kaleid/system
LINXDIR=kaleid/common/test
all: bootloader kernel
boot.mbr.s: $(BOOTDIR)/mbr.s $(BOOTDIR)/mbr.inc
$(ASM) $(BOOTFLAGS) $(BOOTDIR)/mbr.asm -o $(OBJDIR)/boot/mbr.bin
boot.loader.s: $(BOOTDIR)/loader.s
$(ASM) $(BOOTFLAGS) $(BOOTDIR)/loader.asm -o $(OBJDIR)/boot/loader.bin
bootloader: boot.mbr.s boot.loader.s
cp $(OBJDIR)/boot/mbr.bin $(BINDIR)/mbr.bin
cp $(OBJDIR)/boot/loader.bin $(BINDIR)/loader.bin
pseudo_kern:
$(ASM) $(BOOTFLAGS) $(BOOTDIR)/pseudo_kernel.s -o $(OBJDIR)/boot/pkernel.bin
testing: bootloader pseudo_kern
cat $(BINDIR)/bootloader.bin $(OBJDIR)/boot/pkernel.bin > $(BINDIR)/boot.bin
COBJDIR=$(OBJDIR)/$(COMMDIR)
LOBJDIR=$(OBJDIR)/$(LINXDIR)
COMMOBJS=$(COBJDIR)/string.o $(COBJDIR)/status.o $(COBJDIR)/rand.o $(COBJDIR)/memory.o $(COBJDIR)/arith.o $(COBJDIR)/strtol.o $(COBJDIR)/itoa.o $(COBJDIR)/ltoa.o $(COBJDIR)/utoa.o $(COBJDIR)/ultoa.o $(COBJDIR)/atoi.o $(COBJDIR)/atol.o $(COBJDIR)/atou.o $(COBJDIR)/atoul.o
TCC=$(CC2NAME) $(COPTIM) $(CWARNS) $(CINCLUDES)
KCC=$(CC) -T ./build/kernel.ld -D_OSK_SOURCE -D_KALEID_KERNEL
comm-convert:
$(KCC) -c $(COMMDIR)/itoa.c -o $(COBJDIR)/itoa.o -D_NEED_ITOA
$(KCC) -c $(COMMDIR)/itoa.c -o $(COBJDIR)/ltoa.o -D_NEED_LTOA
$(KCC) -c $(COMMDIR)/itoa.c -o $(COBJDIR)/utoa.o -D_NEED_UTOA
$(KCC) -c $(COMMDIR)/itoa.c -o $(COBJDIR)/ultoa.o -D_NEED_ULTOA
$(KCC) -c $(COMMDIR)/atoi.c -o $(COBJDIR)/atoi.o -D_NEED_ATOI
$(KCC) -c $(COMMDIR)/atoi.c -o $(COBJDIR)/atol.o -D_NEED_ATOL
$(KCC) -c $(COMMDIR)/atoi.c -o $(COBJDIR)/atou.o -D_NEED_ATOU
$(KCC) -c $(COMMDIR)/atoi.c -o $(COBJDIR)/atoul.o -D_NEED_ATOUL
common: comm-convert
$(KCC) -c $(COMMDIR)/rand.c -o $(COBJDIR)/rand.o
$(KCC) -c $(COMMDIR)/arith.c -o $(COBJDIR)/arith.o
$(KCC) -c $(COMMDIR)/string.c -o $(COBJDIR)/string.o
$(KCC) -c $(COMMDIR)/status.c -o $(COBJDIR)/status.o
$(KCC) -c $(COMMDIR)/memory.c -o $(COBJDIR)/memory.o
$(KCC) -c $(COMMDIR)/strtol.c -o $(COBJDIR)/strtol.o
tests: common
$(TCC) -c $(LINXDIR)/test-common.c -o $(LOBJDIR)/test-common.o
$(TCC) $(COMMOBJS) $(LOBJDIR)/test-common.o -o $(BINDIR)/kaleid-common.elf
KOBJDIR=$(OBJDIR)/$(KERNDIR)
KERNOBJS=$(KOBJDIR)/init/init.o $(KOBJDIR)/init/table.o $(KOBJDIR)/ke/panic.o $(KOBJDIR)/ke/terminal.o
kernel: common
$(KCC) -c $(KERNDIR)/init/init.c -o $(KOBJDIR)/init/init.o
$(KCC) -c $(KERNDIR)/init/table.c -o $(KOBJDIR)/init/table.o
$(KCC) -c $(KERNDIR)/ke/panic.c -o $(KOBJDIR)/ke/panic.o
$(KCC) -c $(KERNDIR)/ke/terminal.c -o $(KOBJDIR)/ke/terminal.o
$(KCC) $(CLDSCR) $(COMMOBJS) $(KERNOBJS) -o $(BINDIR)/kaleid-kernel.elf

4
ProjectTree
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@ -60,8 +60,6 @@ src/
| |
| + kernel/
| | |
| | - kernel.ld
| | |
| | + init/
| | | |
| | | - init.c
@ -99,6 +97,8 @@ src/
| |
| - preproc.h
| - iddtool.h
| |
| - kernel.ld
| |
| + bin/
| + obj/

1
Readme.md
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@ -1,6 +1,7 @@
# GNU-GPL OS/K (OS on Kaleid)
### Fully open-source operating system from scratch (WIP), released under the GNU GPL version 3.0
#### Master Branch
For the project plan, see [OS/K Project](https://github.com/orgs/os-k-team/projects/1)

10
boot/elf/elf.c Normal file
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@ -0,0 +1,10 @@
//----------------------------------------------------------------------------//
// GNU GPL OS/K //
// //
// Authors: spectral` //
// NeoX //
// //
// Desc: ELF64 Parser and Loader //
//----------------------------------------------------------------------------//
//STUB

134
boot/loader.asm
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@ -33,6 +33,8 @@
%define volumeLabel bp+0x2b ; Volume Label
%define fatTypeLabel bp+0x36 ; File system type
[BITS 16]
[ORG 0x1000]
@ -41,24 +43,19 @@ mov ds, ax ; hm... And ds too
mov es, ax ; And es because it is jealous
mov [Bootdrv], dl
xor dl, dl
jmp 0x0000:main
;; DATA
Bootdrv db 0
VGA_HEIGHT dq 0
VIDEO_MODE dw 0
;; GDT WITH DOC
GDT64:
NULL_SELECTOR: ;; null selector within 64 bits
dw GDT_LENGTH ; limit of GDT
dw GDT64 ; linear address of GDT
dd 0x0 ;
dw GDT_LENGTH ; limit of GDT
dw GDT64 ; linear address of GDT
dd 0x0 ;
CODE_SELECTOR: ;; 32-bit code selector (ring 0)
dw 0x0FFFF ; Segment Limit
db 0x0, 0x0, 0x0 ; Base Address
dw 0x0000FFFF ; Segment Limit
db 0x0, 0x0, 0x0 ; Base Address
db 10011010b ; |7|6|5|4|3|2|1|0|
; | | | | | | | `----- 1 when segment used.
; | | | | | | `------ 1 when writable.
@ -68,7 +65,7 @@ GDT64:
; | | `---------- DPL !!! 0 for ring 0
; | `----------- DPL (2/2)
; `------------ 1 if in physical memory, 0 if page fault
db 11001111b ; |7|6|5|4|3|2|1|0|
db 11001111b ; |7|6|5|4|3|2|1|0|
; | | | | | | | `----- Limit 16
; | | | | | | `------ Limit 17
; | | | | | `------- Limit 18
@ -77,11 +74,11 @@ GDT64:
; | | `---------- 0 always
; | `----------- size of data. 1 for 32bits
; `------------ 0 if limit is in Bytes, 1 if it's in pages (4ko)
db 0x0 ; Base Address
db 0x0 ; Base Address
DATA_SELECTOR: ;; flat data selector (ring 0)
dw 0x0FFFF ; Segment Limit
db 0x0, 0x0, 0x0 ; Base Address
dw 0x0000FFFF ; Segment Limit
db 0x0, 0x0, 0x0 ; Base Address
db 10010010b ; |7|6|5|4|3|2|1|0|
; | | | | | | | `----- 1 when segment used.
; | | | | | | `------ 1 when writable.
@ -91,7 +88,7 @@ GDT64:
; | | `---------- DPL !!! 0 for ring 0
; | `----------- DPL (2/2)
; `------------ 1 if in physical memory, 0 if page fault
db 10001111b ; |7|6|5|4|3|2|1|0|
db 10001111b ; |7|6|5|4|3|2|1|0|
; | | | | | | | `----- Limit 16
; | | | | | | `------ Limit 17
; | | | | | `------- Limit 18
@ -100,11 +97,11 @@ GDT64:
; | | `---------- 0 always
; | `----------- size of data. 1 for 32bits
; `------------ 0 if limit is in Bytes, 1 if it's in pages (4ko)
db 0x0 ; Base Address
db 0x0 ; Base Address
LONG_SELECTOR: ;; 64-bit code selector (ring 0)
dw 0x0FFFF ; Segment Limit
db 0x0, 0x0, 0x0 ; Base Address
dw 0x0000FFFF ; Segment Limit
db 0x0, 0x0, 0x0 ; Base Address
db 10011010b ; |7|6|5|4|3|2|1|0|
; | | | | | | | `----- 1 when segment used.
; | | | | | | `------ 1 when writable.
@ -114,7 +111,7 @@ GDT64:
; | | `---------- DPL !!! 0 for ring 0
; | `----------- DPL (2/2)
; `------------ 1 if in physical memory, 0 if page fault
db 10101111b ; |7|6|5|4|3|2|1|0|
db 10101111b ; |7|6|5|4|3|2|1|0|
; | | | | | | | `----- Limit 16
; | | | | | | `------ Limit 17
; | | | | | `------- Limit 18
@ -123,13 +120,15 @@ GDT64:
; | | `---------- 0 always
; | `----------- size of data. 1 for 32bits
; `------------ 0 if limit is in Bytes, 1 if it's in pages (4ko)
db 0x0 ; Base Address
db 0x0 ; Base Address
GDT_LENGTH:
%include "boot/loader16.inc"
main:
;; compatibility check
push si
mov si, Init
call PrintB
pop si
@ -138,8 +137,10 @@ main:
push si
mov si, Pass
call PrintB
pop si
;; Enabling A20
push si
mov si, EnA20
call PrintB
pop si
@ -149,11 +150,12 @@ main:
push si
mov si, Pass
call PrintB
pop si
;; DISABLING CURSOR BLINKING AND GETTING INFOS
call get_dimensions
call disable_cursor
;;GO GDT64
cli ; disable interrupts
lgdt [GDT64]
@ -172,15 +174,35 @@ main:
push dword [VIDEO_MODE]
push dword [VGA_HEIGHT]
jmp (CODE_SELECTOR-GDT64):main32
ErrorNo64:
mov si, NoLongMode
call PrintB
Die:
cli
hlt ; die nooooow
jmp 0xF000:0xFFF0
[BITS 32]
VIDEO_MODE32 dw 0
VGA_HEIGHT32 dw 0
main32:
pop dword [VGA_HEIGHT32]
pop dword [VIDEO_MODE32]
;; VERIFY A20
pushad
mov edi,0x112345 ;odd megabyte address.
mov esi,0x012345 ;even megabyte address.
mov [esi],esi ;making sure that both addresses contain diffrent values.
mov [edi],edi ;(if A20 line is cleared the two pointers would point to the address 0x012345 that would contain 0x112345 (edi))
cmpsd ;compare addresses to see if the're equivalent.
popad
jne .A20_on ;if not equivalent , A20 line is set.
mov WORD [A20_OK], 0
jmp .A20_end
.A20_on:
mov BYTE [A20_OK], 1
.A20_end:
;; INITIALIZE PROTECTED MODE SEGMENT REGISTERS
mov ax, DATA_SELECTOR-GDT64
mov ds, ax
@ -239,18 +261,33 @@ main32:
%include "boot/loader64.inc"
;; DATA
txt db 0x09, " Switching to Long Mode... ", 0
Init db "Booting OS/K !", 0x0D, 0x0A, 0x0D, 0x0A, 0x09, " Checking CPUID...",0
Reinit db "Booting OS/K !", 0x0D, 0x0A, 0x0D, 0x0A, 0
CPUIDD db 0x09, " Checking CPUID...", 0
EnA20 db 0x09, " Enabling A20 line...", 0
NoLongMode db 0x0A, 0x0D, "ERROR : Your computer is not designed for x64 OS", 0
ReadAttempt db 0x09, " Attempt to read a sector with ATA commands...", 0x0A, 0x0D, 0x0A, 0x0D,0
txt db 0x09, " Switching to Long Mode... ", 0
Reinit db "Booting OS/K !", 0x0D, 0x0A, 0x0D, 0x0A, 0
Pass db " OK", 0x0A, 0x0D, 0
Fail db " FAIL!", 0x0A, 0x0D, 0
msg db "The system is now in x64 mode. Is this not beautiful ?", 0x0A, 0x0D, 0
NoLongMode db 0x0A, 0x0D, "ERROR : Your computer is not designed for x64 OS", 0
FileNotFound db "Second Stage Error : The Kernel was not found.", 0x0A, 0x0D, 0
DiskError db "Second Stage Error : The Disk has crashed.", 0x0A, 0x0D, 0
filename db "KERNEL BIN"
Bootdrv db 0
UserData dw 0
VGA_HEIGHT dq 0
VIDEO_MODE dw 0
VIDEO_MODE32 dw 0
VGA_HEIGHT32 dw 0
NextTRAM dq 0x0B8000 ; Last position of cursor
VIDEO_MODE64 dq 0
VGA_HEIGHT64 dq 0
VGA_X dq 0x0
msg db "The system is now in x64 mode. Is this not beautiful ?", 0x0A, 0x0D, 0
VGA_X dq 0
A20_OK db 0
main64:
pop qword [VGA_HEIGHT64]
@ -277,10 +314,17 @@ main64:
mov esi, EnA20
call write
cmp BYTE [A20_OK], 1
je .A20Success
mov bl, 0x0C
mov esi, Fail
call write
jmp Die
.A20Success:
mov bl, 0x0A
mov esi, Pass
call write
mov bl, 0x0F
mov esi, txt
call write
@ -292,14 +336,22 @@ main64:
mov bl, 0x0D
mov esi, msg
call write
mov bl, 0x0F
mov esi, ReadAttempt
call write
mov rcx, 2
.looping:
nop
nop
nop
loop .looping ; Temporized because the ATA drive must be ready
call ata_read
jmp Die
[BITS 16]
ErrorNo64:
mov si, NoLongMode
call PrintB
Die:
cli
hlt ; die nooooow
jmp 0xF000:0xFFF0
; times 1024 nop
; XXX ;
; It seems impossible to have an executable > 2.0 kB...

125
boot/loader64.inc
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@ -71,6 +71,129 @@ write:
pop rax
jmp .pLoop
.scroll:
; XXX ;
; XXX I don't think I'll implement this, but never know...;
jmp .pLoop
dump:
;-----------------------------------------------------------------------;
; x64/LM Dump Printing Functions ;
; bl : color code ;
; esi : string address ;
;-----------------------------------------------------------------------;
mov edi, [NextTRAM] ; TRAM ADDRESS
push rsi
push rdi
push rcx
mov rcx, 512
.pLoop:
lodsb
stosb ; text subpixel
mov al, bl
stosb ; color subpixel
add qword [NextTRAM], 0x2 ; Cursor moving
add qword [VGA_X], 0x2 ; coord + 2 because 2 subpixels
loop .pLoop
pop rcx
pop rdi
pop rsi
ret
ata_read:
;-----------------------------------------------------------------------;
; x64/LM ATA Reading function ;
; ;
; ;
;-----------------------------------------------------------------------;
; Technical infos about the ports (Intel Doc):
;
; Port Access Mode Misc
;
; 1f0 r/w Data register, the bytes of the disk itself
; 1f1 r Error register that can be handled
; 1f2 r/w Sector count, how many sectors to read
; 1f3 r/w Sector number, the actual sector wanted
; 1f4 r/w Cylinder low, cylinders is 0-1024
; 1f5 r/w Cylinder high, this makes up the rest of the 1024
; 1f6 r/w Drive/head
; bit 7 = 1
; bit 6 = 0
; bit 5 = 1
; bit 4 = 0 drive 0 select
; = 1 drive 1 select
; bit 3-0 head select bits
; 1f7 r Status register
; bit 7 = 1 controller is executing a command
; bit 6 = 1 drive is ready
; bit 5 = 1 write fault
; bit 4 = 1 seek complete
; bit 3 = 1 sector buffer requires servicing
; bit 2 = 1 disk data read corrected
; bit 1 = 1 index - set to 1 each revolution
; bit 0 = 1 previous command ended in an error
; 1f7 w Command register
; commands:
; 50h format track
; 20h read sectors with retry
; 21h read sectors without retry
; 22h read long with retry
; 23h read long without retry
; 30h write sectors with retry
; 31h write sectors without retry
; 32h write long with retry
; 33h write long without retry
;
push rax
push rbx
push rdx
push rcx
push rdi
mov dx,1f6h ;Drive and head port
mov al,0a0h ;Drive 0, head 0
out dx,al
mov dx,1f2h ;Sector count port
mov al,1 ;Read one sector
out dx,al
mov dx,1f3h ;Sector number port
mov al,1 ;Read sector one
out dx,al
mov dx,1f4h ;Cylinder low port
mov al,0 ;Cylinder 0
out dx,al
mov dx,1f5h ;Cylinder high port
mov al,0 ;The rest of the cylinder 0
out dx,al
mov dx,1f7h ;Command port
mov al,20h ;Read with retry.
out dx,al
still_going:
in al,dx
test al,8 ;This means the sector buffer requires
;servicing.
jz still_going ;Don't continue until the sector buffer
;is ready.
mov cx,512/2 ;One sector /2
mov rdi,buffer
mov dx,1f0h ;Data port - data comes in and out of here.
rep insw
pop rdi
pop rcx
pop rdx
pop rbx
pop rax
mov bl, 0x0F
mov esi, buffer
call dump
mov bl, 0x0A
mov esi, end
call write
ret
buffer: times 512 db "_"
end: db "[End of Sector]", 0x0

3
boot/mbr.inc
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@ -7,6 +7,7 @@
; Desc: Bootsector for OS/K INCLUDED FUNCTIONS ;
; (x86_64 architecture only) ;
;=----------------------------------------------------------------------------=;
[BITS 16]
read_clusters:
;---------------------------------------------------;
@ -100,7 +101,7 @@ read_sectors:
shl ah, 1
or cl, ah ; Now cx is set with respective track and sector numbers
mov dl, byte [Bootdrv] ; Set correct Bootdrv for int 13h
mov di, 5 ; Try five times to read the sector because i love 5
mov di, 21 ; Try five times to read the sector because i love 21
.attempt_read:
mov ax, 0x0201 ; Read Sectors func of int 13h, read one sector
int 0x13 ; Call int 13h (BIOS disk I/O)

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build/bin/disk.img
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build/bin/loader.bin
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build/bin/mbr.bin
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BIN
build/obj/boot/loader.bin
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4
kaleid/common/atoi.c
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@ -15,9 +15,9 @@
//
#define _ATOI_IMPL(_Name, _Type, _Func) \
_Type _Name(const char *str) { \
error_t old = errno; \
__get_errno(old); \
_Type ret = (_Type)_Func(str, NULL, 0); \
errno = old; \
__set_errno(old); \
return ret; \
}

4
kaleid/common/status.c
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@ -9,7 +9,7 @@
#include <kaleid.h>
error_t errno = 0;
error_t __errno = 0;
/*
static const char *descriptions[] = {
@ -17,7 +17,7 @@ static const char *descriptions[] = {
[-FAILED] = "Failed (no precision)",
[-NOT_PERMITTED] = "Operation not permitted",
[-ACCESS_DENIED] = "Access denied",
[-BAD_ARGUMENT] = "Bad argument",
[-BAD_ARG_RANGE] = "Bad argument (not in range)",
[-BAD_ARG_NULL] = "Bad argument (null pointer)",

4
kaleid/common/strtol.c
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@ -13,7 +13,7 @@ long strtol(const char *str, char **endp, int base) {
(void)str;
(void)endp;
(void)base;
errno = ENOSYS;
__set_errno(ENOSYS);
return 0;
}
@ -21,7 +21,7 @@ ulong strtoul(const char *str, char **endp, int base) {
(void)str;
(void)endp;
(void)base;
errno = ENOSYS;
__set_errno(ENOSYS);
return 0;
}

19
kaleid/include/common/kalcrt.h
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@ -43,7 +43,24 @@ typedef struct { long quot, rem; } ldiv_t;
// Global variables //
//------------------------------------------//
extern error_t errno;
#ifndef _KALEID_KERNEL
extern error_t __errno;
#ifndef errno
#define errno __errno
#endif
#define __get_errno(x) error_t x = errno;
#define __set_errno(x) (errno = (x))
#else
#define errno
#define __get_errno(x)
#define __set_errno(x)
#endif
//------------------------------------------//
// Macros //

5
kaleid/include/kernel/kernbase.h
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@ -184,7 +184,8 @@ void WriteByteOnPort(port_t port, port_t val)
static inline
uchar ReadByteFromPort(port_t port)
{
errno = ENOSYS;
KalAssert(FALSE && ENOSYS);
(void)port;
return 0;
}
@ -192,7 +193,7 @@ uchar ReadByteFromPort(port_t port)
static inline
ushort ReadWordFromPort(port_t port)
{
errno = ENOSYS;
KalAssert(FALSE && ENOSYS);
(void)port;
return 0;
}