--- /dev/null
+/* Copyright 2013-2014 IBM Corp.
+ * Copyrignt 2020 Shawn Anastasio
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ * implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define STACK_TOP 0x2000
+
+/* Load an immediate 64-bit value into a register */
+#define LOAD_IMM64(r, e) \
+ lis r,(e)@highest; \
+ ori r,r,(e)@higher; \
+ rldicr r,r, 32, 31; \
+ oris r,r, (e)@h; \
+ ori r,r, (e)@l;
+
+ .section ".head","ax"
+
+ /*
+ * Microwatt currently enters in LE mode at 0x0, so we don't need to
+ * do any endian fix ups
+ */
+ . = 0
+.global _start
+_start:
+ b boot_entry
+
+.global boot_entry
+boot_entry:
+ /* setup stack */
+ LOAD_IMM64(%r1, STACK_TOP - 0x100)
+ LOAD_IMM64(%r12, main)
+ mtctr %r12
+ bctrl
+ attn // terminate on exit
+ b .
+
+
+/* Test addpcis with an immediate operand of 0 (min) */
+.global test_addpcis_1
+test_addpcis_1:
+ mflr %r0
+ std %r0, 16(%r1)
+ stdu %r1, -32(%r1)
+
+ /* get address of 1 */
+ bl 1f
+ 1: mflr %r4
+ addpcis %r5, 0
+
+ /*
+ * At this point, r5 should equal r4 + 2*4
+ * return 0 if they're equal.
+ */
+ addi %r4, %r4, 8
+
+ sub %r3, %r4, %r5
+
+ addi %r1, %r1, 32
+ ld %r0, 16(%r1)
+ mtlr %r0
+
+ blr
+
+/* Test addpcis with an immediate operand of 0xFFFF (max) */
+.global test_addpcis_2
+test_addpcis_2:
+ mflr %r0
+ std %r0, 16(%r1)
+ stdu %r1, -32(%r1)
+
+ /* get address of 1 */
+ bl 1f
+ 1: mflr %r4
+ addpcis %r5, 0xFFFF
+
+ /*
+ * Add 8 to r4 to bring it in line with addpcis' NIA.
+ * Then add 0xFFFF shifted and compare.
+ */
+ addi %r4, %r4, 8
+ addis %r4, %r4, 0xFFFF
+
+ sub %r3, %r4, %r5
+
+ addi %r1, %r1, 32
+ ld %r0, 16(%r1)
+ mtlr %r0
+
+ blr
+
--- /dev/null
+#include <stddef.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "console.h"
+
+#define TEST "Test "
+#define PASS "PASS\n"
+#define FAIL "FAIL\n"
+
+extern long test_addpcis_1(void);
+extern long test_addpcis_2(void);
+
+// i < 100
+void print_test_number(int i)
+{
+ puts(TEST);
+ putchar(48 + i/10);
+ putchar(48 + i%10);
+ putchar(':');
+}
+
+int main(void)
+{
+ int fail = 0;
+
+ potato_uart_init();
+
+ print_test_number(1);
+ if (test_addpcis_1() != 0) {
+ fail = 1;
+ puts(FAIL);
+ } else
+ puts(PASS);
+
+ print_test_number(2);
+ if (test_addpcis_2() != 0) {
+ fail = 1;
+ puts(FAIL);
+ } else
+ puts(PASS);
+
+ return fail;
+}