From 51f7f0e9b37ecd13367a69613d748f8d2f313d9c Mon Sep 17 00:00:00 2001
From: winsdominoes <winsdominoes@winscloud.net>
Date: Tue, 11 Jun 2024 13:42:37 +0700
Subject: [PATCH] x86 fasm

---
 x86-64/hello               | Bin 0 -> 236 bytes
 x86-64/hello.asm           |  19 +++++++++++++++
 x86-64/minimum/minimum     | Bin 0 -> 347 bytes
 x86-64/minimum/minimum.asm |  47 +++++++++++++++++++++++++++++++++++++
 x86/minimum/Makefile       |   3 +++
 x86/minimum/minimum.asm    |  32 +++++++++++++++++++++++++
 x86/minimum/minimum.elf    | Bin 0 -> 8856 bytes
 7 files changed, 101 insertions(+)
 create mode 100755 x86-64/hello
 create mode 100644 x86-64/hello.asm
 create mode 100755 x86-64/minimum/minimum
 create mode 100644 x86-64/minimum/minimum.asm
 create mode 100644 x86/minimum/Makefile
 create mode 100644 x86/minimum/minimum.asm
 create mode 100755 x86/minimum/minimum.elf

diff --git a/x86-64/hello b/x86-64/hello
new file mode 100755
index 0000000000000000000000000000000000000000..cde3d27b764170c2f60253d6cf0e78d134f9ec75
GIT binary patch
literal 236
zcmb<-^>JfjWMpQ50wxAK21X!z1A_xt1VVzDaKeGXf`JJt4^qntmjN*xpgahD56Xkl
z3<3}VkUlmbhKb)3Z~#ldXg)BHfdNLt^m+7}ssoMiIDP<Rg2(aW5b6*}9X~6O57Gye
UwSn+cb8_+(%JYkIQWUuu08xY(e*gdg

literal 0
HcmV?d00001

diff --git a/x86-64/hello.asm b/x86-64/hello.asm
new file mode 100644
index 0000000..68611b4
--- /dev/null
+++ b/x86-64/hello.asm
@@ -0,0 +1,19 @@
+format ELF64 executable 3
+
+segment readable executable
+
+entry main
+
+main:
+	lea rsi, [msg]			; load effective address of msg into rdi
+	mov rax, 0x01 			; move 1 into rax (write syscall)
+	mov rdi, 1				; stdout = 1
+	mov rdx, 14				; add length to rdx register
+	syscall
+
+	mov rdi, 0				; 0 return code
+	mov rax, 0x3c			# exit syscall number
+	syscall
+
+segment readable writable
+msg	db "Hello world!", 10, 0
diff --git a/x86-64/minimum/minimum b/x86-64/minimum/minimum
new file mode 100755
index 0000000000000000000000000000000000000000..1a78a2a730b9ac4767a41decf25bf1a9cb9588c4
GIT binary patch
literal 347
zcmb<-^>JfjWMqH=CI&kO5N`v616T+`f|+o_fx&`-2`Ud#%L<nPF&v;g2>lw$gV78E
z5CM=rHXw$HzZP%+OTg#?Fpq%&M#J=Z96t<_@#to`3sUOQdC<f5KTx1V)Z_nQxTxic
z+802n*N;6q&wCs{U;|XZ&&mwa2n5a$ia`lV--FV+P}&<xn?Y%qIvprq5lV|eX>KU(
K1f@aF0RaHw6(uzQ

literal 0
HcmV?d00001

diff --git a/x86-64/minimum/minimum.asm b/x86-64/minimum/minimum.asm
new file mode 100644
index 0000000..835f67c
--- /dev/null
+++ b/x86-64/minimum/minimum.asm
@@ -0,0 +1,47 @@
+;###############################
+;
+; MINIMUM IN X64
+;
+;##############################
+
+; =============================
+; Find smallest number
+; rax = current item
+; rbx = index of data_items
+; rcx = smallest item found
+; rdi = return value
+; =============================
+
+format ELF64 executable 0
+
+segment readable executable
+
+entry main
+main:
+	mov rbx, 0
+	mov rax, [data_items + rbx * 8]
+	mov rcx, rax
+
+loop_through:
+	cmp rax, 255
+	je exit
+	inc rbx
+
+	mov rax, [data_items + rbx * 8]
+	cmp rax, rcx
+	jge loop_through
+
+	mov rcx, rax
+	jmp loop_through
+
+print: 
+	mov rax, 0x01
+	mov rdi, 1
+	mov esi 
+
+exit:
+	mov rax, 0x3c
+	syscall
+
+segment readable writable
+	data_items dq 3, 67, 34, 222, 45, 75, 54, 34, 44, 33, 22, 11, 66, 255
diff --git a/x86/minimum/Makefile b/x86/minimum/Makefile
new file mode 100644
index 0000000..705b017
--- /dev/null
+++ b/x86/minimum/Makefile
@@ -0,0 +1,3 @@
+default:
+	as minimum.asm --32 -o minimum.o
+	gcc -o minimum.elf -m32 minimum.o -nostdlib
diff --git a/x86/minimum/minimum.asm b/x86/minimum/minimum.asm
new file mode 100644
index 0000000..edd9eb9
--- /dev/null
+++ b/x86/minimum/minimum.asm
@@ -0,0 +1,32 @@
+# FIND SMALLEST NUMBER
+# edi = index of data_items
+# ebx = smallest item found
+# eax = current item 
+
+.global _start
+.intel_syntax noprefix
+.section .text
+
+_start:
+	mov edi, 0									# move 0 to edi (first index)
+	mov eax, [data_items + edi * 4]				# move first number to eax
+	mov ebx, eax								# move eax to ebx
+
+start_loop:
+	cmp eax, 255								# compare eax to 0
+	je loop_exit								# if eax == 0, jump to loop_exit
+	inc edi										# increment edi by 1
+
+	mov eax, [data_items + edi * 4]				# move next number to eax
+	cmp eax, ebx								# compare smallest item (ebx) to current item (eax)
+	jge start_loop								# if ebx is greater than eax, jump to start loop
+
+	mov ebx, eax								# move eax to ebx
+	jmp start_loop								# jump back to start_loop
+
+loop_exit:
+	mov eax, 1 									# move 1 to eax (syscall number)
+	int 0x80									# kernel interrupt
+
+.section .data
+	data_items: .long 3, 67, 34, 222, 45, 75, 54, 34, 44, 33, 22, 11, 66, 255
diff --git a/x86/minimum/minimum.elf b/x86/minimum/minimum.elf
new file mode 100755
index 0000000000000000000000000000000000000000..4ba92295c743de4abf8e1006bc3fcb8444ce7e96
GIT binary patch
literal 8856
zcmeHNJ&V*(6up_rxFZWPf{36+#t&G~4K55i7AvUe6s|TRSO{T;1PyE^!{iO@7UFix
zvMh+dz#rfbun~oAw6NR4%1%MVLa<mw7|(f`w+vI+D)++4{me~rUYg|Hr#Dw_d7dXu
zDpD2eJ@e}=1RpfZOiKc($%52nuFNyM;n#@(ClEek4Jq@`f*!;Lm_!XY$Oo`rAP=-*
z5{Cfh*=LVHZ(;>D!8md6vx)bi_mLwOU=uD+eGI4qoxAttXU%M$X};Y1)%v|Ne*f_K
zsmjt9)|>!%Ppt98d&?LeLn;#+riwD43@8K2fHI&AC<DrXGN2471ImCh@Lw?ShEK8W
zzvg%N*6#8co@sO@fh!-MeBavr_VpFNia%`NprQ;Y1ImChpbRJj%78MU3@8K2fHI&A
zC<Ff>1KcCO0h|Ut0gJ$G;1a+X_wAd&abO;}4)7<ztnd$k6JLIeS!?(AZP2&pAK^TJ
zm8$J|Zpy#N_{48u=l(q0HvUO4+`!KM<r)9#j4xT*PqR@L<`Q>JH%d*C6;hb)&_t_w
zJ`f(FWGyukMZKbkY)Ybp)lmIdBrMi5)9pc<VW}TGtDl=BeAFL>y-~UvFQ&1C2cf|*
zA0$JwE}==*jD)r$@B44$B#P#M3Sj3Qpw9wMIFmpL0as_|9^iB4!HKK8h5*;X&Qg$1
z%u{d;ow#-CAV8bzZ`Ua(XE5keTpcy<%}G1JGQnYg&Q9>UxP%-AY%gfayP$lptb>E=
RcNF$?-F#Ezjw_m~`vVDNdV~M~

literal 0
HcmV?d00001