Add basic jal misalign test

Author: trdthg

test/first_party/CMakeLists.txt

@@ -82,6 +82,7 @@ set(common_deps
 set(tests
     "test_hello_world.c"
     "test_minstret.S"
+    "test_jal_misaligned.S"
 )
 
 foreach (xlen IN ITEMS 32 64)

test/first_party/src/test_jal_misaligned.S

@@ -0,0 +1,52 @@
+.global main
+.align 4
+main:
+    mv t6, ra
+    # install custom trap handler to catch misalign jal target address
+    la t0, trap_handler
+    csrw mtvec, t0
+
+    # set test pass count to 0
+    li t5, 0
+
+    # TODO: disable zca extension which is enabled by default
+    jal misalign
+    li t4, 1
+    bne t5, t4, fail
+
+    la t0, misalign
+    jalr x1, 3(t0)
+    li t4, 1
+    bne t5, t4, fail
+
+pass:
+    li a0, 0
+    j finish
+fail:
+    li a0, 1
+    j finish
+finish:
+    mv ra, t6
+    # uninstall custom trap handler
+    csrwi mtvec, 0
+    ret
+
+    .space 2
+misalign:
+    .space 2
+    ret
+
+trap_handler:
+    csrr t0, mcause
+    li t1, 0  # E_Fetch_Addr_Align
+    bne t0, t1, trap_exit
+
+    # test pass count
+    addi t5, t5, 1
+
+    li a0, 0
+    csrr t0, mepc
+    addi t0, t0, 4
+    csrw mepc, t0
+trap_exit:
+    mret