Add an RVC test

2 files changed, 162 insertions, 0 deletions

diff --git a/isa/rv64uc/Makefrag b/isa/rv64uc/Makefrag
new file mode 100644
index 0000000..f5e49b7
--- /dev/null
+++ b/isa/rv64uc/Makefrag
@@ -0,0 +1,11 @@
+#=======================================================================
+# Makefrag for rv64uc tests
+#-----------------------------------------------------------------------
+
+rv64uc_sc_tests = \
+	rvc \
+
+rv64uc_p_tests = $(addprefix rv64uc-p-, $(rv64uc_sc_tests))
+rv64uc_v_tests = $(addprefix rv64uc-v-, $(rv64uc_sc_tests))
+
+spike_tests += $(rv64uc_p_tests) $(rv64uc_v_tests)
diff --git a/isa/rv64uc/rvc.S b/isa/rv64uc/rvc.S
new file mode 100644
index 0000000..4f2675a
--- /dev/null
+++ b/isa/rv64uc/rvc.S
@@ -0,0 +1,151 @@
+# See LICENSE for license details.
+
+#*****************************************************************************
+# rvc.S
+#-----------------------------------------------------------------------------
+#
+# Test RVC corner cases.
+#
+
+#include "riscv_test.h"
+#include "test_macros.h"
+
+RVTEST_RV64U
+RVTEST_CODE_BEGIN
+
+  .option push
+  .option norvc
+
+  #define RVC_TEST_CASE(n, r, v, code...) \
+    TEST_CASE (n, r, v, .option push; .option rvc; code; .option pop)
+
+  // Make sure fetching a 4-byte instruction across a page boundary works.
+  li TESTNUM, 2
+  li a1, 666
+  li a2, 1
+  RVC_TEST_CASE (2, a1, 2, \
+        j 1f; \
+        .align 12; \
+        .skip 4094; \
+      1: addi a1, a2, 1)
+
+  li sp, 0x1234
+  RVC_TEST_CASE (3, a0, 0x1234 + 1020, c.addi4spn a0, sp, 1020)
+  RVC_TEST_CASE (4, sp, 0x1234 + 496, c.addi16sp sp, 496)
+  RVC_TEST_CASE (5, sp, 0x1234 + 496 - 512, c.addi16sp sp, -512)
+
+  la a1, data
+  RVC_TEST_CASE (6, a2, 0xfffffffffedcba99, c.lw a0, 4(a1); addi a0, a0, 1; c.sw a0, 4(a1); c.lw a2, 4(a1))
+#ifdef __riscv64
+  RVC_TEST_CASE (7, a2, 0xfedcba9976543211, c.ld a0, 0(a1); addi a0, a0, 1; c.sd a0, 0(a1); c.ld a2, 0(a1))
+#endif
+
+  RVC_TEST_CASE (8, a0, -15, ori a0, x0, 1; c.addi a0, -16)
+  RVC_TEST_CASE (9, a5, -16, ori a5, x0, 1; c.li a5, -16)
+#ifdef __riscv64
+  RVC_TEST_CASE (10, a0, 0x76543210, ld a0, (a1); c.addiw a0, -1)
+#endif
+
+  RVC_TEST_CASE (11, s0, 0xffffffffffffffe1, c.lui s0, 0xfffe1; c.srai s0, 12)
+  RVC_TEST_CASE (12, s0, 0x000fffffffffffe1, c.lui s0, 0xfffe1; c.srli s0, 12)
+  RVC_TEST_CASE (13, s0, 0x000fffffffffffe1, c.lui s0, 0xfffe1; c.srli s0, 12)
+  RVC_TEST_CASE (14, s0, ~0x11, c.li s0, -2; c.andi s0, ~0x10)
+  RVC_TEST_CASE (15, s1, 14, li s1, 20; li a0, 6; c.sub s1, a0)
+  RVC_TEST_CASE (16, s1, 18, li s1, 20; li a0, 6; c.xor s1, a0)
+  RVC_TEST_CASE (17, s1, 22, li s1, 20; li a0, 6; c.or s1, a0)
+  RVC_TEST_CASE (18, s1,  4, li s1, 20; li a0, 6; c.and s1, a0)
+#ifdef __riscv64
+  RVC_TEST_CASE (19, s1, 0xffffffff80000000, li s1, 0x7fffffff; li a0, -1; c.subw s1, a0)
+  RVC_TEST_CASE (20, s1, 0xffffffff80000000, li s1, 0x7fffffff; li a0, 1; c.addw s1, a0)
+#endif
+  RVC_TEST_CASE (21, s0, 0x12340, li s0, 0x1234; c.slli s0, 4)
+
+  RVC_TEST_CASE (30, ra, 0, \
+        li ra, 0; \
+        c.j 1f; \
+        c.j 2f; \
+      1:c.j 1f; \
+      2:j fail; \
+      1:)
+
+  RVC_TEST_CASE (31, x0, 0, \
+        li a0, 0; \
+        c.beqz a0, 1f; \
+        c.j 2f; \
+      1:c.j 1f; \
+      2:j fail; \
+      1:)
+
+  RVC_TEST_CASE (32, x0, 0, \
+        li a0, 1; \
+        c.bnez a0, 1f; \
+        c.j 2f; \
+      1:c.j 1f; \
+      2:j fail; \
+      1:)
+
+  RVC_TEST_CASE (33, x0, 0, \
+        li a0, 1; \
+        c.beqz a0, 1f; \
+        c.j 2f; \
+      1:c.j fail; \
+      2:)
+
+  RVC_TEST_CASE (34, x0, 0, \
+        li a0, 0; \
+        c.bnez a0, 1f; \
+        c.j 2f; \
+      1:c.j fail; \
+      2:)
+
+  RVC_TEST_CASE (35, ra, 0, \
+        la t0, 1f; \
+        li ra, 0; \
+        c.jr t0; \
+        c.j 2f; \
+      1:c.j 1f; \
+      2:j fail; \
+      1:)
+
+  RVC_TEST_CASE (36, ra, -2, \
+        la t0, 1f; \
+        li ra, 0; \
+        c.jalr t0; \
+        c.j 2f; \
+      1:c.j 1f; \
+      2:j fail; \
+      1:sub ra, ra, t0)
+
+#ifdef __riscv32
+  RVC_TEST_CASE (37, ra, -2, \
+        la t0, 1f; \
+        li ra, 0; \
+        c.jal 1f; \
+        c.j 2f; \
+      1:c.j 1f; \
+      2:j fail; \
+      1:sub ra, ra, t0)
+#endif
+
+  la sp, data
+  RVC_TEST_CASE (40, a2, 0xfffffffffedcba99, c.lwsp a0, 12(sp); addi a0, a0, 1; c.swsp a0, 12(sp); c.lwsp a2, 12(sp))
+#ifdef __riscv64
+  RVC_TEST_CASE (41, a2, 0xfedcba9976543211, c.ldsp a0, 8(sp); addi a0, a0, 1; c.sdsp a0, 8(sp); c.ldsp a2, 8(sp))
+#endif
+
+  RVC_TEST_CASE (42, t0, 0x246, li a0, 0x123; c.mv t0, a0; c.add t0, a0)
+
+  .option pop
+
+  TEST_PASSFAIL
+
+RVTEST_CODE_END
+
+  .data
+RVTEST_DATA_BEGIN
+
+data:
+  .dword 0xfedcba9876543210
+  .dword 0xfedcba9876543210
+
+RVTEST_DATA_END