On 10.12.2012, at 11:18, Cornelia Huck wrote: > On Mon, 10 Dec 2012 09:07:57 +0100 > Alexander Graf <agraf@xxxxxxx> wrote: > >> >> On 07.12.2012, at 13:50, Cornelia Huck wrote: >> >>> Basic channel I/O structures and helper function. >>> >>> Signed-off-by: Cornelia Huck <cornelia.huck@xxxxxxxxxx> >>> --- >>> target-s390x/Makefile.objs | 2 +- >>> target-s390x/ioinst.c | 46 ++++++++++ >>> target-s390x/ioinst.h | 207 +++++++++++++++++++++++++++++++++++++++++++++ >>> 3 files changed, 254 insertions(+), 1 deletion(-) >>> create mode 100644 target-s390x/ioinst.c >>> create mode 100644 target-s390x/ioinst.h >>> >>> diff --git a/target-s390x/Makefile.objs b/target-s390x/Makefile.objs >>> index e728abf..3afb0b7 100644 >>> --- a/target-s390x/Makefile.objs >>> +++ b/target-s390x/Makefile.objs >>> @@ -1,4 +1,4 @@ >>> obj-y += translate.o helper.o cpu.o interrupt.o >>> obj-y += int_helper.o fpu_helper.o cc_helper.o mem_helper.o misc_helper.o >>> -obj-$(CONFIG_SOFTMMU) += machine.o >>> +obj-$(CONFIG_SOFTMMU) += machine.o ioinst.o >>> obj-$(CONFIG_KVM) += kvm.o >>> diff --git a/target-s390x/ioinst.c b/target-s390x/ioinst.c >>> new file mode 100644 >>> index 0000000..8577b2c >>> --- /dev/null >>> +++ b/target-s390x/ioinst.c >>> @@ -0,0 +1,46 @@ >>> +/* >>> + * I/O instructions for S/390 >>> + * >>> + * Copyright 2012 IBM Corp. >>> + * Author(s): Cornelia Huck <cornelia.huck@xxxxxxxxxx> >>> + * >>> + * This work is licensed under the terms of the GNU GPL, version 2 or (at >>> + * your option) any later version. See the COPYING file in the top-level >>> + * directory. >>> + */ >>> + >>> +#include <sys/types.h> >>> +#include <sys/ioctl.h> >>> +#include <sys/mman.h> >>> + >>> +#include "cpu.h" >>> +#include "ioinst.h" >>> + >>> +#ifdef DEBUG_IOINST >>> +#define dprintf(fmt, ...) \ >>> + do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) >>> +#else >>> +#define dprintf(fmt, ...) \ >>> + do { } while (0) >>> +#endif >>> + >>> +int ioinst_disassemble_sch_ident(uint32_t value, int *m, int *cssid, int *ssid, >>> + int *schid) >>> +{ >>> + if (!(value & IOINST_SCHID_ONE)) { >>> + return -EINVAL; >>> + } >>> + if (!(value & IOINST_SCHID_M)) { >>> + if (value & IOINST_SCHID_CSSID) { >>> + return -EINVAL; >>> + } >>> + *cssid = 0; >>> + *m = 0; >>> + } else { >>> + *cssid = (value & IOINST_SCHID_CSSID) >> 24; >> >> (value & IOINST_SCHID_CSSID_MASK) >> IOINST_SCHID_CSSID_SHIFT > > I think that actually decreases readability. I'm fine with doing it Jocelyn-style too: #define IOINST_SCHID_CSSID(x) ((x & 0x...) >> 24) if you prefer that for readability :) Alex -- To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html