From 06ef9c611e6176f0c2e071bfa758ac6ea6dcbb14 Mon Sep 17 00:00:00 2001
From: SantriptaSharma <santripta@gmail.com>
Date: Wed, 6 Dec 2023 20:14:38 +0530
Subject: [PATCH] input lib (a5) partial

---
 15_A5.y                |  2 +-
 A4_tests/testsimple.nc |  1 +
 A5_Tests/test4.nc      |  4 ++--
 Makefile               | 10 +++++----
 createa5.sh            |  2 +-
 inputlib.s             | 48 ++++++++++++++++++++++++++++++++++++++++++
 lexmain.c              |  1 +
 7 files changed, 60 insertions(+), 8 deletions(-)
 create mode 100644 inputlib.s

diff --git a/15_A5.y b/15_A5.y
index 8cea038..80b803d 100644
--- a/15_A5.y
+++ b/15_A5.y
@@ -684,7 +684,7 @@ compound_statement:
 	
 block_item_list:
 	block_item
-	| block_item_list marker block_item { Backpatch($1, $2); $$ = $3; Backpatch($$, quads_size); Emit(JmpLabel()); }
+	| block_item_list marker block_item { Backpatch($1, $2); $$ = $3; Backpatch($$, quads_size); }
 
 block_item:
 	declaration { $$ = NULL; }
diff --git a/A4_tests/testsimple.nc b/A4_tests/testsimple.nc
index 483d444..ed0d4a7 100644
--- a/A4_tests/testsimple.nc
+++ b/A4_tests/testsimple.nc
@@ -5,6 +5,7 @@ char ithmetic2 = charithmetic - 'd';
 int arithmetic = ithmetic2 + 5;
 char d = +'c';
 char f = -'f';
+void *thing = &GLOB;
 
 void printf(char *c, int argv);
 
diff --git a/A5_Tests/test4.nc b/A5_Tests/test4.nc
index 4a9e973..dcdcd00 100644
--- a/A5_Tests/test4.nc
+++ b/A5_Tests/test4.nc
@@ -1,6 +1,6 @@
-int sum(int n){
+int fun(int n){
     if(n == 0) return n;
-    return sum(n-1) + n;
+    return fun(n-1) + n;
 }
 
 int main(){
diff --git a/Makefile b/Makefile
index 00c1134..f2e4180 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ l=flex
 yy=bison
 CFLAGS=-Werror -lfl -g
 
-o=translator
+o=compiler
 lx=lexer
 
 team=15
@@ -15,8 +15,9 @@ fname=$(team)_A$(assignment)
 
 build: $(o)
 
-test: build
-	./$(o) < $(testfile)
+# TODO: write this according to spec
+# test: build
+# 	./$(o) < $(testfile)
 
 $(o): $(fname)_translator.o $(fname).tab.o $(lx).o compiler.o
 	$(CC) -o $@ $^ $(CFLAGS)
@@ -34,7 +35,8 @@ $(lx).c: $(fname).l $(fname).tab.c
 	$(CC) -c $^ $(CFLAGS)
 
 clean: 
-	rm -rf $(o)*
+	rm -rf $(o)
+	rm -rf $(o).exe
 	rm -rf $(lx)*
 	rm -rf *.o
 	rm -rf $(fname).tab.*
diff --git a/createa5.sh b/createa5.sh
index 7ed4d2f..0745adf 100644
--- a/createa5.sh
+++ b/createa5.sh
@@ -1,3 +1,3 @@
 cp tex_build/15_A5.pdf .
-tar -c 15_A5_translator.c 15_A5_translator.h compiler.c compiler.h 15_A5.l 15_A5.nc 15_A5.y Makefile 15_A5.pdf 15_A5_quads* -f 15_A5.tar
+tar -c 15_A5_translator.c 15_A5_translator.h compiler.c compiler.h 15_A5.l 15_A5.nc 15_A5.y Makefile 15_A5.pdf 15_A5_quads* inputlib.asm -f 15_A5.tar
 rm 15_A5.pdf
\ No newline at end of file
diff --git a/inputlib.s b/inputlib.s
new file mode 100644
index 0000000..f07eb63
--- /dev/null
+++ b/inputlib.s
@@ -0,0 +1,48 @@
+.data
+STRING1:
+	.string "Hello, world!\n"
+.text
+	.globl _main
+	.globl printStr
+
+_main:
+	# write string1 to stdout
+	pushl $STRING1
+	call printStr
+	addl $4, %esp
+
+	# exit w code 0
+	xorl %edi, %edi
+	movl $0x3c, %eax
+	syscall
+
+printStr:
+	# prologue, no callee-saved registers
+	pushl %ebp
+	movl %esp, %ebp 
+
+	# let's get the (32-bit) pointer out of the stack
+	movl 8(%ebp), %ecx
+	# edx will calc strlen
+	xorl %edx, %edx
+	_lenloop:
+		cmpb $0, (%ecx, %edx, 1)
+		je _lenloop_end
+		incl %edx
+		jmp _lenloop
+	_lenloop_end:
+	# edx now contains strlen
+	# need to write to stdout, fd = 1
+	movl $1, %ebx
+	# syscall number for write is 4 on 32-bit
+	movl $4, %eax
+
+	int $4
+	# eax contains return value from write, no. of written characters
+	# our calling convention dictates eax as the return value, so all
+	# done
+
+	# epilogue
+	movl %esp, %ebp
+	popl %ebp
+	ret
diff --git a/lexmain.c b/lexmain.c
index fb06be5..a3841ff 100644
--- a/lexmain.c
+++ b/lexmain.c
@@ -1,6 +1,7 @@
 #include <stdio.h>
 
 extern int yylex();
+int y = 10;
 
 int main() {
 	int c;