From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:34241) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bpJxU-0006AG-Rv for qemu-devel@nongnu.org; Wed, 28 Sep 2016 14:51:57 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bpJxT-0000XO-G5 for qemu-devel@nongnu.org; Wed, 28 Sep 2016 14:51:56 -0400 From: Laurent Vivier Date: Wed, 28 Sep 2016 20:51:32 +0200 Message-Id: <1475088693-29091-6-git-send-email-lvivier@redhat.com> In-Reply-To: <1475088693-29091-1-git-send-email-lvivier@redhat.com> References: <1475088693-29091-1-git-send-email-lvivier@redhat.com> Subject: [Qemu-devel] [PATCH v3 5/6] qtest: define target cpu endianness conversion functions List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: dgibson@redhat.com, thuth@redhat.com, qemu-ppc@nongnu.org, Gerd Hoffmann , Greg Kurz , Laurent Vivier Signed-off-by: Laurent Vivier --- tests/libqtest.h | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) diff --git a/tests/libqtest.h b/tests/libqtest.h index 4be1f77..b3ac7d8 100644 --- a/tests/libqtest.h +++ b/tests/libqtest.h @@ -17,6 +17,7 @@ #ifndef LIBQTEST_H #define LIBQTEST_H +#include "qemu/bswap.h" #include "qapi/qmp/qdict.h" typedef struct QTestState QTestState; @@ -891,6 +892,62 @@ static inline bool target_big_endian(void) return qtest_big_endian(global_qtest); } +/* Endianness conversion function between target cpu and specified endianess + * + * uint16_t target_le16_to_cpu(uint16_t v); + * uint32_t target_le32_to_cpu(uint32_t v); + * uint64_t target_le64_to_cpu(uint64_t v); + * uint16_t target_be16_to_cpu(uint16_t v); + * uint32_t target_be32_to_cpu(uint32_t v); + * uint64_t target_be64_to_cpu(uint64_t v); + * + * Convert the value @v from the specified format to the native + * endianness of the target CPU by byteswapping if necessary, and + * return the converted value. + * + * uint16_t target_cpu_to_le16(uint16_t v); + * uint32_t target_cpu_to_le32(uint32_t v); + * uint64_t target_cpu_to_le64(uint64_t v); + * uint16_t target_cpu_to_be16(uint16_t v); + * uint32_t target_cpu_to_be32(uint32_t v); + * uint64_t target_cpu_to_be64(uint64_t v); + * + * Convert the value @v from the native endianness of the target CPU to + * the specified format by byteswapping if necessary, and return + * the converted value. + * + * Both target_X_to_cpu() and target_cpu_to_X() perform the same operation; you + * should use whichever one is better documenting of the function your + * code is performing. + * + */ + +#define le_bswap(s, v, size) (qtest_big_endian(s) ? bswap ## size(v) : (v)) +#define be_bswap(s, v, size) (qtest_big_endian(s) ? (v) : bswap ## size(v)) + +#define TARGET_CPU_CONVERT(endian, size, type)\ +static inline type target_ ## endian ## size ## _to_cpu(type v)\ +{\ + return glue(endian, _bswap)(global_qtest, v, size);\ +} \ +\ +static inline type target_cpu_to_ ## endian ## size(type v)\ +{\ + return glue(endian, _bswap)(global_qtest, v, size);\ +} + +TARGET_CPU_CONVERT(be, 16, uint16_t) +TARGET_CPU_CONVERT(be, 32, uint32_t) +TARGET_CPU_CONVERT(be, 64, uint64_t) + +TARGET_CPU_CONVERT(le, 16, uint16_t) +TARGET_CPU_CONVERT(le, 32, uint32_t) +TARGET_CPU_CONVERT(le, 64, uint64_t) + +#undef TARGET_CPU_CONVERT +#undef be_bswap +#undef le_bswap + QDict *qmp_fd_receive(int fd); void qmp_fd_sendv(int fd, const char *fmt, va_list ap); void qmp_fd_send(int fd, const char *fmt, ...); -- 2.5.5