From e7bc50ca8ffcaa6ed68ebd2315f78b0f5a7d10ad Mon Sep 17 00:00:00 2001 From: klaar36 Date: Fri, 20 Mar 2015 17:30:24 +0100 Subject: Initial Pintos --- src/tests/vm/pt-grow-pusha.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 src/tests/vm/pt-grow-pusha.c (limited to '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 +#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. */ +} -- cgit v1.2.1