From 381ce23fd76d0f874d48d3fac7e336805fc9c66c Mon Sep 17 00:00:00 2001
From: Paulo Matos <pmatos@igalia.com>
Date: Tue, 9 Jul 2024 13:36:16 +0200
Subject: [PATCH] Tests for X87 FTST

---
 unittests/ASM/X87/D9_E4.asm         | 35 ++++++++++++++++++++++++++++
 unittests/ASM/X87_F64/D9_E4_F64.asm | 36 +++++++++++++++++++++++++++++
 2 files changed, 71 insertions(+)
 create mode 100644 unittests/ASM/X87/D9_E4.asm
 create mode 100644 unittests/ASM/X87_F64/D9_E4_F64.asm

diff --git a/unittests/ASM/X87/D9_E4.asm b/unittests/ASM/X87/D9_E4.asm
new file mode 100644
index 000000000..fcefd8750
--- /dev/null
+++ b/unittests/ASM/X87/D9_E4.asm
@@ -0,0 +1,35 @@
+%ifdef CONFIG
+{
+  "RegData": {
+    "RAX": "0x100",
+    "RBX": "0x0",
+    "RCX": "0x4000"
+  },
+  "MemoryRegions": {
+    "0x100000000": "4096"
+  }
+}
+%endif
+
+fld dword [rel positive]
+ftst
+fnstsw ax
+and rax, 0x4700
+mov rbx, rax
+
+fldz
+ftst
+fnstsw ax
+and rax, 0x4700
+mov rcx, rax
+
+fld dword [rel negative]
+ftst
+fnstsw ax
+and rax, 0x4700
+
+hlt
+
+align 16
+positive: dd 3.14159
+negative: dd -2.71828
\ No newline at end of file
diff --git a/unittests/ASM/X87_F64/D9_E4_F64.asm b/unittests/ASM/X87_F64/D9_E4_F64.asm
new file mode 100644
index 000000000..ce5687622
--- /dev/null
+++ b/unittests/ASM/X87_F64/D9_E4_F64.asm
@@ -0,0 +1,36 @@
+%ifdef CONFIG
+{
+  "RegData": {
+    "RAX": "0x100",
+    "RBX": "0x0",
+    "RCX": "0x4000"
+  },
+  "MemoryRegions": {
+    "0x100000000": "4096"
+  },
+  "Env": { "FEX_X87REDUCEDPRECISION" : "1" }
+}
+%endif
+
+fld dword [rel positive]
+ftst
+fnstsw ax
+and rax, 0x4700
+mov rbx, rax
+
+fldz
+ftst
+fnstsw ax
+and rax, 0x4700
+mov rcx, rax
+
+fld dword [rel negative]
+ftst
+fnstsw ax
+and rax, 0x4700
+
+hlt
+
+align 8
+positive: dd 3.14159
+negative: dd -2.71828
\ No newline at end of file