From 86298845e127365e8a5b7419a5ee9039bbd1837f Mon Sep 17 00:00:00 2001 From: John Snow Date: Mon, 4 Aug 2014 17:11:20 -0400 Subject: qtest: Adding qtest_memset and qmemset. Currently, libqtest allows for memread and memwrite, but does not offer a simple way to zero out regions of memory. This patch adds a simple function to do so. Signed-off-by: John Snow Signed-off-by: Stefan Hajnoczi --- tests/libqtest.c | 12 ++++++++++++ tests/libqtest.h | 24 ++++++++++++++++++++++++ 2 files changed, 36 insertions(+) diff --git a/tests/libqtest.c b/tests/libqtest.c index 4a75cd3..e525e6f 100644 --- a/tests/libqtest.c +++ b/tests/libqtest.c @@ -659,6 +659,18 @@ void qtest_memwrite(QTestState *s, uint64_t addr, const void *data, size_t size) qtest_rsp(s, 0); } +void qtest_memset(QTestState *s, uint64_t addr, uint8_t pattern, size_t size) +{ + size_t i; + + qtest_sendf(s, "write 0x%" PRIx64 " 0x%zx 0x", addr, size); + for (i = 0; i < size; i++) { + qtest_sendf(s, "%02x", pattern); + } + qtest_sendf(s, "\n"); + qtest_rsp(s, 0); +} + QDict *qmp(const char *fmt, ...) { va_list ap; diff --git a/tests/libqtest.h b/tests/libqtest.h index 8f323c7..1be0934 100644 --- a/tests/libqtest.h +++ b/tests/libqtest.h @@ -283,6 +283,17 @@ void qtest_memread(QTestState *s, uint64_t addr, void *data, size_t size); void qtest_memwrite(QTestState *s, uint64_t addr, const void *data, size_t size); /** + * qtest_memset: + * @s: #QTestState instance to operate on. + * @addr: Guest address to write to. + * @patt: Byte pattern to fill the guest memory region with. + * @size: Number of bytes to write. + * + * Write a pattern to guest memory. + */ +void qtest_memset(QTestState *s, uint64_t addr, uint8_t patt, size_t size); + +/** * qtest_clock_step_next: * @s: #QTestState instance to operate on. * @@ -621,6 +632,19 @@ static inline void memwrite(uint64_t addr, const void *data, size_t size) } /** + * qmemset: + * @addr: Guest address to write to. + * @patt: Byte pattern to fill the guest memory region with. + * @size: Number of bytes to write. + * + * Write a pattern to guest memory. + */ +static inline void qmemset(uint64_t addr, uint8_t patt, size_t size) +{ + qtest_memset(global_qtest, addr, patt, size); +} + +/** * clock_step_next: * * Advance the QEMU_CLOCK_VIRTUAL to the next deadline. -- cgit v1.1