From fb2e05a7eb4d4a031ac56b185b355ce0703558c8 Mon Sep 17 00:00:00 2001
From: h2-addad <hamza2.addad@live.uwe.ac.uk>
Date: Sun, 16 Jul 2023 15:26:35 +0000
Subject: [PATCH] Upload New File
---
src/tests/vm/pt-grow-pusha.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
create mode 100644 src/tests/vm/pt-grow-pusha.c
diff --git a/src/tests/vm/pt-grow-pusha.c b/src/tests/vm/pt-grow-pusha.c
new file mode 100644
index 0000000..f9762a5
--- /dev/null
+++ b/src/tests/vm/pt-grow-pusha.c
@@ -0,0 +1,20 @@
+/* Expand the stack by 32 bytes all at once using the PUSHA
+ instruction.
+ This must succeed. */
+
+#include <string.h>
+#include "tests/arc4.h"
+#include "tests/cksum.h"
+#include "tests/lib.h"
+#include "tests/main.h"
+
+void
+test_main (void)
+{
+ asm volatile
+ ("movl %%esp, %%eax;" /* Save a copy of the stack pointer. */
+ "andl $0xfffff000, %%esp;" /* Move stack pointer to bottom of page. */
+ "pushal;" /* Push 32 bytes on stack at once. */
+ "movl %%eax, %%esp" /* Restore copied stack pointer. */
+ : : : "eax"); /* Tell GCC we destroyed eax. */
+}
--
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