test: add test programs

Author: Samir-Rashid

.gitignore

@@ -23,3 +23,6 @@ Cargo.lock
 # Added by cargo
 
 /target
+
+# temporary files
+*.bin

test/Makefile

@@ -0,0 +1,4 @@
+# gcc -S add.c -O0 -o add.x86.s
+# gcc add.x86.s -no-pie -o add.x86.bin
+# ./add.x86.bin
+# echo $?

test/add.c

@@ -1,4 +1,4 @@
-void main(void) {
+int main(void) {
 	int x = 3;
 	int y = 4;
 

test/add.riscv.s

@@ -0,0 +1,19 @@
+main:
+        addi    sp,sp,-32
+        sd      ra,24(sp)
+        sd      s0,16(sp)
+        addi    s0,sp,32
+        li      a5,3
+        sw      a5,-20(s0)
+        li      a5,4
+        sw      a5,-24(s0)
+        lw      a5,-20(s0)
+        mv      a4,a5
+        lw      a5,-24(s0)
+        addw    a5,a4,a5
+        sext.w  a5,a5
+        mv      a0,a5
+        ld      ra,24(sp)
+        ld      s0,16(sp)
+        addi    sp,sp,32
+        jr      ra

test/add.x86.s

@@ -0,0 +1,25 @@
+	.file	"add.c"
+	.text
+	.globl	main
+	.type	main, @function
+main:
+.LFB0:
+	.cfi_startproc
+	pushq	%rbp
+	.cfi_def_cfa_offset 16
+	.cfi_offset 6, -16
+	movq	%rsp, %rbp
+	.cfi_def_cfa_register 6
+	movl	$3, -8(%rbp)
+	movl	$4, -4(%rbp)
+	movl	-8(%rbp), %edx
+	movl	-4(%rbp), %eax
+	addl	%edx, %eax
+	popq	%rbp
+	.cfi_def_cfa 7, 8
+	ret
+	.cfi_endproc
+.LFE0:
+	.size	main, .-main
+	.ident	"GCC: (GNU) 13.3.0"
+	.section	.note.GNU-stack,"",@progbits