Added basic array functionality.

19_Arrays_pt1/Makefile

@@ -0,0 +1,31 @@
+SRCS= cg.c decl.c expr.c gen.c main.c misc.c scan.c stmt.c \
+	sym.c tree.c types.c
+
+ARMSRCS= cg_arm.c decl.c expr.c gen.c main.c misc.c scan.c stmt.c \
+	sym.c tree.c types.c
+
+comp1: $(SRCS)
+	cc -o comp1 -g -Wall $(SRCS)
+
+comp1arm: $(ARMSRCS)
+	cc -o comp1arm -g -Wall $(ARMSRCS)
+	cp comp1arm comp1
+
+clean:
+	rm -f comp1 comp1arm *.o *.s out
+
+test: comp1 tests/runtests
+	(cd tests; chmod +x runtests; ./runtests)
+
+armtest: comp1arm tests/runtests
+	(cd tests; chmod +x runtests; ./runtests)
+
+test20: comp1 tests/input20.c lib/printint.c
+	./comp1 tests/input20.c
+	cc -o out out.s lib/printint.c
+	./out
+
+armtest20: comp1arm tests/input20.c lib/printint.c
+	./comp1 tests/input20.c
+	cc -o out out.s lib/printint.c
+	./out

19_Arrays_pt1/Notes

@@ -0,0 +1,23 @@
+  int ary[5];
+  int *ptr;
+
+  ary[3]= 63;		    // Set ary[3] (lvalue) to 63
+  ptr   = ary;		    // Point ptr to base of ary
+  // ary= ptr;		    // error: assignment to expression with array type
+  ptr   = &ary[0];	    // Also point ptr to base of ary, ary[0] is lvalue
+  ptr[4]= 72;		    // Use ptr like an array, ptr[4] is an lvalue
+
+        .globl  z
+z:     .quad   1
+        .quad   2
+        .quad   3
+        .quad   4
+        .globl  zc
+zc:    .byte   1
+        .byte   2
+        .byte   3
+        .byte   4
+        .byte   0
+        .byte   0
+        .byte   0
+        .byte   0