diff options
| -rw-r--r-- | fsdev/9p-iov-marshal.c | 18 | ||||
| -rw-r--r-- | hw/bt/hci.c | 10 | ||||
| -rw-r--r-- | hw/bt/l2cap.c | 12 | ||||
| -rw-r--r-- | include/qemu/bswap.h | 70 |
4 files changed, 74 insertions, 36 deletions
diff --git a/fsdev/9p-iov-marshal.c b/fsdev/9p-iov-marshal.c index 584082b..663cad5 100644 --- a/fsdev/9p-iov-marshal.c +++ b/fsdev/9p-iov-marshal.c @@ -207,31 +207,25 @@ ssize_t v9fs_iov_vmarshal(struct iovec *in_sg, int in_num, size_t offset, break; } case 'w': { - uint16_t val; + uint16_t val = va_arg(ap, int); if (bswap) { - cpu_to_le16w(&val, va_arg(ap, int)); - } else { - val = va_arg(ap, int); + val = cpu_to_le16(val); } copied = v9fs_pack(in_sg, in_num, offset, &val, sizeof(val)); break; } case 'd': { - uint32_t val; + uint32_t val = va_arg(ap, uint32_t); if (bswap) { - cpu_to_le32w(&val, va_arg(ap, uint32_t)); - } else { - val = va_arg(ap, uint32_t); + val = cpu_to_le32(val); } copied = v9fs_pack(in_sg, in_num, offset, &val, sizeof(val)); break; } case 'q': { - uint64_t val; + uint64_t val = va_arg(ap, uint64_t); if (bswap) { - cpu_to_le64w(&val, va_arg(ap, uint64_t)); - } else { - val = va_arg(ap, uint64_t); + val = cpu_to_le64(val); } copied = v9fs_pack(in_sg, in_num, offset, &val, sizeof(val)); break; diff --git a/hw/bt/hci.c b/hw/bt/hci.c index 7d52205..351123f 100644 --- a/hw/bt/hci.c +++ b/hw/bt/hci.c @@ -426,11 +426,7 @@ static void bt_submit_raw_acl(struct bt_piconet_s *net, int length, uint8_t *dat * be continuously allocated. We do it though, to preserve similar * behaviour between hosts. Some things, like the BD_ADDR cannot be * preserved though (for example if a real hci is used). */ -#ifdef HOST_WORDS_BIGENDIAN -# define HNDL(raw) bswap16(raw) -#else -# define HNDL(raw) (raw) -#endif +#define HNDL(raw) cpu_to_le16(raw) static const uint8_t bt_event_reserved_mask[8] = { 0xff, 0x9f, 0xfb, 0xff, 0x07, 0x18, 0x00, 0x00, @@ -1504,8 +1500,8 @@ static void bt_submit_hci(struct HCIInfo *info, return; #define PARAM(cmd, param) (((cmd##_cp *) data)->param) -#define PARAM16(cmd, param) le16_to_cpup(&PARAM(cmd, param)) -#define PARAMHANDLE(cmd) HNDL(PARAM(cmd, handle)) +#define PARAM16(cmd, param) lduw_le_p(&PARAM(cmd, param)) +#define PARAMHANDLE(cmd) PARAM16(cmd, handle) #define LENGTH_CHECK(cmd) if (length < sizeof(cmd##_cp)) goto short_hci /* Note: the supported commands bitmask in bt_hci_read_local_commands_rp * needs to be updated every time a command is implemented here! */ diff --git a/hw/bt/l2cap.c b/hw/bt/l2cap.c index dfc95ed..e342045 100644 --- a/hw/bt/l2cap.c +++ b/hw/bt/l2cap.c @@ -526,9 +526,9 @@ static int l2cap_channel_config(struct l2cap_instance_s *l2cap, } /* MTU */ - val = le16_to_cpup((void *) opt->val); + val = lduw_le_p(opt->val); if (val < ch->min_mtu) { - cpu_to_le16w((void *) opt->val, ch->min_mtu); + stw_le_p(opt->val, ch->min_mtu); result = L2CAP_CONF_UNACCEPT; break; } @@ -543,7 +543,7 @@ static int l2cap_channel_config(struct l2cap_instance_s *l2cap, } /* Flush Timeout */ - val = le16_to_cpup((void *) opt->val); + val = lduw_le_p(opt->val); if (val < 0x0001) { opt->val[0] = 0xff; opt->val[1] = 0xff; @@ -987,7 +987,7 @@ static void l2cap_bframe_in(struct l2cap_chan_s *ch, uint16_t cid, static void l2cap_iframe_in(struct l2cap_chan_s *ch, uint16_t cid, const l2cap_hdr *hdr, int len) { - uint16_t fcs = le16_to_cpup((void *) (hdr->data + len - 2)); + uint16_t fcs = lduw_le_p(hdr->data + len - 2); if (len < 4) goto len_error; @@ -1002,7 +1002,7 @@ static void l2cap_iframe_in(struct l2cap_chan_s *ch, uint16_t cid, /* TODO: Signal an error? */ return; } - l2cap_sframe_in(ch, le16_to_cpup((void *) hdr->data)); + l2cap_sframe_in(ch, lduw_le_p(hdr->data)); return; } @@ -1022,7 +1022,7 @@ static void l2cap_iframe_in(struct l2cap_chan_s *ch, uint16_t cid, if (len - 6 > ch->mps) goto len_error; - ch->len_total = le16_to_cpup((void *) (hdr->data + 2)); + ch->len_total = lduw_le_p(hdr->data + 2); if (len >= 6 + ch->len_total) goto seg_error; diff --git a/include/qemu/bswap.h b/include/qemu/bswap.h index ce3c42e..09c78fd 100644 --- a/include/qemu/bswap.h +++ b/include/qemu/bswap.h @@ -80,6 +80,64 @@ static inline void bswap64s(uint64_t *s) #define be_bswaps(p, size) do { *p = glue(bswap, size)(*p); } while(0) #endif +/** + * Endianness conversion functions between host cpu and specified endianness. + * (We list the complete set of prototypes produced by the macros below + * to assist people who search the headers to find their definitions.) + * + * uint16_t le16_to_cpu(uint16_t v); + * uint32_t le32_to_cpu(uint32_t v); + * uint64_t le64_to_cpu(uint64_t v); + * uint16_t be16_to_cpu(uint16_t v); + * uint32_t be32_to_cpu(uint32_t v); + * uint64_t be64_to_cpu(uint64_t v); + * + * Convert the value @v from the specified format to the native + * endianness of the host CPU by byteswapping if necessary, and + * return the converted value. + * + * uint16_t cpu_to_le16(uint16_t v); + * uint32_t cpu_to_le32(uint32_t v); + * uint64_t cpu_to_le64(uint64_t v); + * uint16_t cpu_to_be16(uint16_t v); + * uint32_t cpu_to_be32(uint32_t v); + * uint64_t cpu_to_be64(uint64_t v); + * + * Convert the value @v from the native endianness of the host CPU to + * the specified format by byteswapping if necessary, and return + * the converted value. + * + * void le16_to_cpus(uint16_t *v); + * void le32_to_cpus(uint32_t *v); + * void le64_to_cpus(uint64_t *v); + * void be16_to_cpus(uint16_t *v); + * void be32_to_cpus(uint32_t *v); + * void be64_to_cpus(uint64_t *v); + * + * Do an in-place conversion of the value pointed to by @v from the + * specified format to the native endianness of the host CPU. + * + * void cpu_to_le16s(uint16_t *v); + * void cpu_to_le32s(uint32_t *v); + * void cpu_to_le64s(uint64_t *v); + * void cpu_to_be16s(uint16_t *v); + * void cpu_to_be32s(uint32_t *v); + * void cpu_to_be64s(uint64_t *v); + * + * Do an in-place conversion of the value pointed to by @v from the + * native endianness of the host CPU to the specified format. + * + * Both X_to_cpu() and cpu_to_X() perform the same operation; you + * should use whichever one is better documenting of the function your + * code is performing. + * + * Do not use these functions for conversion of values which are in guest + * memory, since the data may not be sufficiently aligned for the host CPU's + * load and store instructions. Instead you should use the ld*_p() and + * st*_p() functions, which perform loads and stores of data of any + * required size and endianness and handle possible misalignment. + */ + #define CPU_CONVERT(endian, size, type)\ static inline type endian ## size ## _to_cpu(type v)\ {\ @@ -99,16 +157,6 @@ static inline void endian ## size ## _to_cpus(type *p)\ static inline void cpu_to_ ## endian ## size ## s(type *p)\ {\ glue(endian, _bswaps)(p, size);\ -}\ -\ -static inline type endian ## size ## _to_cpup(const type *p)\ -{\ - return glue(glue(endian, size), _to_cpu)(*p);\ -}\ -\ -static inline void cpu_to_ ## endian ## size ## w(type *p, type v)\ -{\ - *p = glue(glue(cpu_to_, endian), size)(v);\ } CPU_CONVERT(be, 16, uint16_t) @@ -126,7 +174,7 @@ static inline uint32_t qemu_bswap_len(uint32_t value, int len) } /* - * Same as cpu_to_le{16,23}, except that gcc will figure the result is + * Same as cpu_to_le{16,32}, except that gcc will figure the result is * a compile-time constant if you pass in a constant. So this can be * used to initialize static variables. */ |