From a3223466e80fd1667082287ce7d9fc657ce3faed Mon Sep 17 00:00:00 2001
From: Philip Solobay <maximus242@gmail.com>
Date: Fri, 13 Sep 2024 08:31:59 -0500
Subject: [PATCH] Update SIMD instructions for result and make test script
 friendlier

---
 compiler/executable-example.scm |  2 +-
 compiler/test_load_buffer.scm   | 59 +++++++++++++++++++++++++++++++++
 2 files changed, 60 insertions(+), 1 deletion(-)
 create mode 100644 compiler/test_load_buffer.scm

diff --git a/compiler/executable-example.scm b/compiler/executable-example.scm
index b187931..fa29093 100644
--- a/compiler/executable-example.scm
+++ b/compiler/executable-example.scm
@@ -84,7 +84,7 @@
     (vxorps ymm1 ymm1 ymm1)
     (vmovaps (rax) ymm2)
     (vfmadd132ps ymm0 ymm1 ymm2)
-    (vmovaps ymm0 (rdx))
+    (vmovaps ymm2 (rdx))
 
     ; End of function
     (xor eax eax)
diff --git a/compiler/test_load_buffer.scm b/compiler/test_load_buffer.scm
new file mode 100644
index 0000000..16b7224
--- /dev/null
+++ b/compiler/test_load_buffer.scm
@@ -0,0 +1,59 @@
+(use-modules (system foreign))
+
+(define-module (buffer test)
+  #:use-module (system foreign)
+  #:export (get-buffer1 get-result))
+
+;; Load the shared library and initialize
+(load-extension "./liboutput.so" "perform_operations")
+
+(define lib (dynamic-link "./liboutput.so"))
+(define result-ptr (dynamic-pointer "result" lib))
+(define buffer1-ptr (dynamic-pointer "buffer1" lib))
+(define buffer2-ptr (dynamic-pointer "buffer2" lib))
+(define multiplier-ptr (dynamic-pointer "multiplier" lib))
+
+(define (get-result)
+  (pointer->bytevector result-ptr 32)) ; Assuming result is a 32-byte vector
+
+(define (get-buffer1)
+  (pointer->bytevector buffer1-ptr 32)) ; Assuming result is a 32-byte vector
+
+(define (get-buffer2)
+  (pointer->bytevector buffer2-ptr 32)) ; Assuming result is a 32-byte vector
+
+(define (get-multiplier)
+  (pointer->bytevector multiplier-ptr 32)) ; Assuming result is a 32-byte vector
+
+(define perform-operations
+  (pointer->procedure void
+                      (dynamic-func "perform_operations" lib)
+                      '()))
+
+
+;; Function to convert a bytevector into a list of floats
+(define (bytevector-to-floats bv)
+  (let ((floats '()))
+    (do ((i 0 (+ i 4)))
+        ((>= i (bytevector-length bv)) (reverse floats))
+      ;; Read 4 bytes from the bytevector and convert to float
+      (let* ((b0 (bytevector-u8-ref bv i))
+             (b1 (bytevector-u8-ref bv (+ i 1)))
+             (b2 (bytevector-u8-ref bv (+ i 2)))
+             (b3 (bytevector-u8-ref bv (+ i 3)))
+             ;; Combine bytes into a 32-bit float (little-endian)
+             (int32 (logior (ash b3 24)
+                            (ash b2 16)
+                            (ash b1 8)
+                            b0))
+             (float (bitwise-float32->number int32)))
+        (set! floats (cons float floats))))))
+
+;; Usage example
+(display "buffer1 as floats: ")
+(display (bytevector-to-floats (get-buffer1)))
+(newline)
+
+(display "result as floats: ")
+(display (bytevector-to-floats (get-result)))
+(newline)
-- 
2.39.5