From 2b05b8b74fb4fca02b7ef42e6cd7cf36d20d8600 Mon Sep 17 00:00:00 2001
From: xamidev <qelal@batareika.com>
Date: Sun, 7 Jul 2024 10:08:25 +0200
Subject: [PATCH] Fixed printf x86_div64_32 and testing

---
 bochsrc.txt         |   2 +-
 io.s                |  34 ++++++++++++++++++++++------------
 iso/boot/kernel.elf | Bin 10320 -> 14400 bytes
 kernel.elf          | Bin 10320 -> 14400 bytes
 kmain.c             |  22 +++++++++++++++++++++-
 os.iso              | Bin 487424 -> 491520 bytes
 6 files changed, 44 insertions(+), 14 deletions(-)

diff --git a/bochsrc.txt b/bochsrc.txt
index fe783a2..9783490 100644
--- a/bochsrc.txt
+++ b/bochsrc.txt
@@ -1,5 +1,5 @@
 megs:            32
-display_library: sdl2 
+display_library: x 
 romimage:        file=/usr/share/bochs/BIOS-bochs-legacy
 vgaromimage:     file=/usr/share/bochs/VGABIOS-lgpl-latest
 ata0-master:     type=cdrom, path=os.iso, status=inserted
diff --git a/io.s b/io.s
index bb131d9..b677e49 100644
--- a/io.s
+++ b/io.s
@@ -16,19 +16,29 @@ inb:
 global x86_div64_32
 
 x86_div64_32:
-  mov eax, [bp+8]
-  mov ecx, [bp+12]
-  xor edx, edx
-  div ecx
+    push ebp
+    mov ebp, esp
 
-  mov bx, [bp+16]
-  mov [bx+4], eax
+    ; Arguments:
+    ; [ebp + 8]  - lower 32 bits of dividend (uint32_t)
+    ; [ebp + 12] - upper 32 bits of dividend (uint32_t)
+    ; [ebp + 16] - divisor (uint32_t)
+    ; [ebp + 20] - pointer to quotient (uint64_t*)
+    ; [ebp + 24] - pointer to remainder (uint32_t*)
 
-  mov eax, [bp+4]
-  div ecx
+    mov eax, [ebp + 8]
+    mov edx, [ebp + 12]
 
-  mov [bx], eax
-  mov bx, [bp+18]
-  mov [bx], edx
+    mov ecx, [ebp + 16]
 
-  ret
+    div ecx
+    mov esi, [ebp + 20]
+    mov [esi], eax
+
+    mov dword [esi + 4], 0
+
+    mov esi, [ebp + 24]
+    mov [esi], edx
+
+    pop ebp
+    ret
\ No newline at end of file
diff --git a/iso/boot/kernel.elf b/iso/boot/kernel.elf
index a1339134860d6110359e6abbe13fef65ce43e872..5315e60523c9d818b31fbe73fba136bf67ff0b22 100755
GIT binary patch
delta 3166
zcma)8e^3<H9e;b=!Gb5Z{0to2vGP+H#1oOxBr?IURx>eki07CX(t;j27!-<}N+-;P
z*~WNTZ-RX`X`E@BG|t3!Mp6qk#H0>#3R9<<khGdfn#tG<#*Lf}rbK=O-G1KQabEjJ
zrwfnwKA-pfz2AMjap!PHUslp{O9fI%2w7KkEI;4APQVJo1cqSd*zCX%0mNfXrCj`(
zK)1zLs6M@vklx^I9wBOVA|Y~!Z;cDc?@wx)Q=Lo#aZzBLAs~OIbDxAc^;MW0lcw`w
zb4;3g4pTt>8WMgfq<N<_@3iI(1>|X6r^Tq-8I#maqh(}Nx=~{}FWrzsMxRsjssXt&
z#JtsprQprebX(H`vP-8|F49KNH|I}(;kkF2xoXz;QWp1kPi5-8%K`a-PS3~b{uGH<
z8W#Q>bosB>%b|3&)67y$MyiTr_KyrXiIot`+arpL=f<1;(jAs)vgdEmRzIXCgdAxg
zAzA=Sn13V8Sl*HDSk4YZ!Rfie<o#j3Z_y!=Q*ST93-H_Nys#?aJ+`j5Q%A}wz8CA>
zpv_L7O*xhjLOo4CwPC|bvs0HO3^Tlw;XL|Ss>P=;Twr4{^L}YzvUN<FMX||bz2aI>
zq}gpwwM)}9`66#QKh84Vy0GE`<LjJi{XMo}jtU+O3nE`8^^xM5b=GZDo5NDFG|QnR
zgshilJKvP01#T#tkTk%B&ZFnBWD%?w@w=vJM@nYajk~(-cab+yT+@m)RfkZL?$KYR
zETh$FX8r`asW(`aOSh%DIEkK0b5=d2don6AFB0M(QDh@#)DVjG3(TAlQ$Jq4z$5i1
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zq~!Z5k$_O9t?7z1q#(SIIp7`K5%3P}VD*0qfyx&}#Wjc*64=c7w@z8k9#1Q~<<qny
z+fBn^CI5xQkGy}<<8jD6)1<qUNjo{eYihLCG`w=s8gM~$iW|3_C6@DObF)*On%Ccu
zymyL|d!|VD=Ljp{p566KL$JAz{q((5TgW#n+Y62V4C+&eeR(W+msu&=D$Lwgyy^b<
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zN_4JH=hjBJG@W}==az-JK2VyMS5w1K7ihXgrJQQtp~k%}d)x<*2HEUxYik#a_Lqs>
z?Ow65(=8V55xd=uo%_Z1wmo9wzCEI+@qo^DbhbCOx%cib7Z0`{6pM;*gb}jeyW1n~
z^X_eOcZx;cBpvSdG<G)b?qbYt!esZkpKa`F(XAvw!v__Q`;b_K-<^yA?r3k>r)zX1
zkv?`_v7?EdLZ#O=?J11o7-ul9V4VI+)8_uqkp;QN|CD`HSN<<DYVfZRj&-m$qWofv
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zi2|99;4d&AOcKZ=5j=_cdp@i$K>iy-d?am&Ku$*l{)PEdqd-`XFoW~JRS5!N{lIWP
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fa_FU!0z;XD-Yh9L{ACSIU0!VJUrWe~%-g>K)~-MS

delta 2960
zcma)8eN5cu9e(Zefq{cFA0Y`JhsQ@!vOqbKK=ZK_I-D_SG)I~Xids^QH9%29n+z&3
zi5|#JgX`W#@}g<g8nv4ug-sdBmWCzO7SUW9woIFD5#3mZI;yskGf+nq0xVo}dtUoE
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diff --git a/kernel.elf b/kernel.elf
index a1339134860d6110359e6abbe13fef65ce43e872..5315e60523c9d818b31fbe73fba136bf67ff0b22 100755
GIT binary patch
delta 3166
zcma)8e^3<H9e;b=!Gb5Z{0to2vGP+H#1oOxBr?IURx>eki07CX(t;j27!-<}N+-;P
z*~WNTZ-RX`X`E@BG|t3!Mp6qk#H0>#3R9<<khGdfn#tG<#*Lf}rbK=O-G1KQabEjJ
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delta 2960
zcma)8eN5cu9e(Zefq{cFA0Y`JhsQ@!vOqbKK=ZK_I-D_SG)I~Xids^QH9%29n+z&3
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z7-{Vjur@xWp7dO0JTV^IZSj{a#{Fw$!96+#17G_`O#h6<53U4MX9Xjeg4$Ev^wspo
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diff --git a/kmain.c b/kmain.c
index 9e75d2b..8cd6cef 100644
--- a/kmain.c
+++ b/kmain.c
@@ -3,11 +3,31 @@
 
 int kmain(int retvalue)
 {
+
+  // serial testing
+
   init_serial();
   log("serial connection established", 3);
   log("Kernel started", 2);
 
   clear();
-  printf("Formatted: %% %c %s %d\n", 'f', "Hello", 77);
+
+  // printf testing
+
+  int age = 34;
+  int problems = 124;
+  char* name = "xamidev"; 
+  
+  printf("Hello %s, you are %d years old and have %d problems. wow %%\n", name, age, problems);
+  
+  long suchwow = 2934342;
+  char character = 65;
+  printf("such number %u\nsuch character %c", suchwow, character);
+  
+  printf("wow negative %d\n", -3742);
+  printf("such hex %x %X\n", 0xcafe, 0xdeadbeef);
+  
+  printf("such pointer %p\n", (void*)0xcafe1234);
+  
   return retvalue;
 }
diff --git a/os.iso b/os.iso
index 3af65aca4e9ff83e7e87501d0c9ce7213aaa2f34..6c0640a01768c23841b6f07e9b7b96fc813349d7 100644
GIT binary patch
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