2 files changed, 24 insertions, 0 deletions
diff --git a/tb/sim/subword.S b/tb/sim/subword.S
new file mode 100644
index 0000000..82604ae
--- /dev/null
+++ b/tb/sim/subword.S
@@ -0,0 +1,16 @@
+.global reset
+
+reset:
+	ldr   r0, =0x01234567
+	push  {r0}
+	ldr   r0, =0x89ab
+	ldrb  r1, [sp, #2]
+	strh  r0, [sp, #2]
+	mov   r2, #0xcd
+	strb  r2, [sp]
+	ldr   r0, [sp]
+	ldrsb r2, [sp]
+	ldrb  r3, [sp]
+	ldrsb r4, [sp, #1]!
+	ldrsh r5, [sp, #1]
+	mov   pc, lr
diff --git a/tb/sim/subword.py b/tb/sim/subword.py
new file mode 100644
index 0000000..4292d6d
--- /dev/null
+++ b/tb/sim/subword.py
@@ -0,0 +1,8 @@
+def final():
+    assert_reg(r0, 0x89ab45cd)
+    assert_reg(r1, 0x23)
+    assert_reg(r2, 0xffffffcd)
+    assert_reg(r3, 0xcd)
+    assert_reg(r4, 0x00000045)
+    assert_reg(r5, 0xffff89ab)
+    assert_reg(sp_svc, 0x2000_0000 - 3)