wip

Signed-off-by: Filip Kokosiński <filip.kokosinski@gmail.com>
fkokosinski · Jun 14, 2024 · 523a0ee · 523a0ee
1 parent e1ed6df
commit 523a0ee
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Showing 4 changed files with 36 additions and 1 deletion.
diff --git a/c-test-arith/Makefile b/c-test-arith/Makefile
@@ -0,0 +1 @@
+include ../common/common.mk
diff --git a/c-test-arith/main.c b/c-test-arith/main.c
@@ -0,0 +1,33 @@
+static void putc(int);
+
+int x;
+int y;
+int z;
+
+void _start(void)
+{
+	/* TODO: handle sp/fp init better -- separate crt0.S? */
+	asm ("law 03000");
+	asm ("dac 209");
+	asm ("law 04000");
+	asm ("dac 208");
+
+	x = 21;
+	y = 37;
+
+	z = x << 3;
+	if (z == 168)
+		putc(027);
+
+	z = y >> 3;
+	if (z == 4)
+		putc(027);
+
+	asm ("hlt");
+	__builtin_unreachable();
+}
+
+static void putc(int c) {
+	asm ("lio %0" : : "r"(c));
+	asm ("tyo");
+}
diff --git a/pdp1-gcc b/pdp1-gcc
diff --git a/tests/test.exp b/tests/test.exp
@@ -29,3 +29,4 @@ run_test "c-print-struct" "xyz"
 run_test "c-print-array" "xyzxyzxyzxyz"
 run_test "c-print-for-loop" "xxxxyxxx"
 run_test "c-test-comparison" "aceg"
+run_test "c-test-arithmetic" "xx"
+11 −0		gcc/config/pdp1/constraints.md
+16 −5		gcc/config/pdp1/pdp1.cc
+6 −7		gcc/config/pdp1/pdp1.h
+63 −8		gcc/config/pdp1/pdp1.md
+18 −0		gcc/config/pdp1/predicates.md
+1 −1		libgcc/config/pdp1/t-pdp1