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Zhao Yanbai Git Server - minix.git/log
Cristiano Giuffrida [Fri, 13 Jun 2014 18:25:33 +0000 (20:25 +0200)]
llvm: Remove no longer needed SLOPPY_FLIST option.
Cristiano Giuffrida [Fri, 13 Jun 2014 18:21:22 +0000 (20:21 +0200)]
llvm: Avoid versioning configuration files directly.
Koustubha Bhat [Tue, 10 Jun 2014 15:05:29 +0000 (17:05 +0200)]
CREATE_IMAGE_ONLY option added to releasetools/x86_hdimage.sh
Koustubha Bhat [Fri, 6 Jun 2014 14:20:39 +0000 (16:20 +0200)]
LLVM Hello pass: inserts printf statement in main() method.
Koustubha Bhat [Tue, 6 May 2014 08:43:42 +0000 (10:43 +0200)]
Bridging Minix & llvm-apps repos for instrumentating Minix
Allows instrumentation of Minix components using LLVM passes from
"llvm-apps" repository
In addition, the change does the following:
1. Move releasetools/generate_gold_plugin.sh to minix/llvm
2. Move external/bsd/llvm/passes to minix/llvm/passes
3. libLTO.so, LLVMgold.so and WeakAliasModuleOverride.so files
now get installed in minix/llvm/bin
Ben Gras [Thu, 17 Jul 2014 12:32:35 +0000 (12:32 +0000)]
Empty libgcc_s.
This library is built just so that something is present in
/usr/lib/libgcc_s.so.1. This is needed for dynamically programs built
with gcc, which might reference that library at runtime (i.e. all pkgsrc
packages). The necessary symbols are in libc however, so when built on a
clang-only system, so an empty library is a working stopgap.
Lionel Sambuc [Tue, 28 Jan 2014 10:33:14 +0000 (11:33 +0100)]
Remove obsolete commands/cpp
Change-Id: Ib5335286bb6f1895f9c6006aeee8828bc9f58a45
Lionel Sambuc [Tue, 28 Jan 2014 09:48:19 +0000 (10:48 +0100)]
Replace cc, c++ & cpp with symlinks
In case of installation of both clang and GCC, we want to be able to
switch which one is the default by adapting the cc, c++ & cpp symlinks.
The default behaviour implemented here is to prefer clang over gcc if
they are both installed.
Change-Id: Ic14720cd876d2bf934d345a955cb5789378209e6
Lionel Sambuc [Thu, 23 Jan 2014 13:10:10 +0000 (14:10 +0100)]
default CC to clang
Change-Id: I5a4e6bfebd0b283f8f025fa91d27b1ac832f7b81
Ben Gras [Mon, 12 May 2014 13:17:14 +0000 (15:17 +0200)]
new libunwind, updated to netbsd
b1f513eedd
existing libunwind used '0' in lsda_encoding as 'not present,'
whereas that is a valid encoding and does occur and would be
ignored. a missing encoding is actually 0xff.
The commit that addresses this is:
commit
8d4b51028d1a12b58d616f4b605254a877caafcf
Author: joerg <joerg>
Date: Tue Mar 11 23:52:17 2014 +0000
0 is a valid LSDA encoding and can be seen in statically linked
programs. Initialize lsdaEncoding to DW_EH_PE_omit and check for that
value to decide whether a value should be decoded.
more bugfixes are necessary. this update is up to:
commit
b1f513eedd332426d88acbb118b6e9070966dcb9
Author: joerg <joerg>
Date: Wed May 14 22:13:36 2014 +0000
Lazy VFP processing works a lot better if the functions contain a return
instruction.
Lionel Sambuc [Sat, 7 Dec 2013 18:53:33 +0000 (19:53 +0100)]
Importing sys/libunwind for clang
Change-Id: Ib073b27e3b883837e682414ef7df56c84ca10816
Lionel Sambuc [Wed, 16 Jul 2014 14:09:33 +0000 (16:09 +0200)]
Compile gold as a tool on MINIX/llvm-only system
This patch is mostly copy-past from answers found in:
http://www.marshut.com/ikhnkn/compiling-gold-with-libc-and-stl-hash-string.html
This combines the first submitted patch, but applied on gold/gold.h
instead of gold/system.h, as well as the freebsd changes.
Lionel Sambuc [Fri, 6 Dec 2013 15:46:30 +0000 (16:46 +0100)]
LLVM Minix changes
- import libcxx
- reduce targets to the one when compiled as a tools
Change-Id: Iabb8427f80ff8e89463559a28bcb8b4f2bdbc496
Lionel Sambuc [Tue, 25 Feb 2014 12:43:18 +0000 (13:43 +0100)]
I should not have been born.
This patch is a ugly, but a this moment I have no better alternatives to
offer.
- Add a script to compile the llvm sources through the standard
makefiles instead of the bsd build system. The produced gold plugin
is then copied into the source tree and used from there by the BSD
Makefiles.
Change-Id: I7fd7ad80be8efcedf27a047b872930ed602d7874
Lionel Sambuc [Fri, 7 Mar 2014 14:06:33 +0000 (15:06 +0100)]
LLVM Passe which fixes weak aliases overriden from bitcode
Lionel Sambuc [Fri, 15 Nov 2013 12:00:54 +0000 (13:00 +0100)]
Importing netbsd clang -- pristine
Change-Id: Ia40e9ffdf29b5dab2f122f673ff6802a58bc690f
David van Moolenbroek [Thu, 10 Jul 2014 11:35:08 +0000 (13:35 +0200)]
Kernel: fix getrusage microsecond computation
Change-Id: I5e443ddbed1bcd49ed81721afda3aa3c1880ad52
David van Moolenbroek [Thu, 10 Jul 2014 10:18:11 +0000 (12:18 +0200)]
Correct a few library dependency tracking mistakes
Change-Id: I3d509db3946ca6c284be64c92c4cec313cc4ca1b
Zachary Storer [Mon, 7 Jul 2014 18:13:40 +0000 (12:13 -0600)]
Import NetBSD mv command.
Change-Id: I08cd4e866685080f7b4d617ee150f5b9d7626e7e
Jan Kobler [Tue, 3 Jun 2014 13:51:55 +0000 (15:51 +0200)]
arm: clear highly mapped kernel bss
. added bss range values for the high (paged) kernel and
clear it in pre_init
. this changes the meaning of the current _edata end _end in the
pre_init phase to mean: highly mapped bss; and the new symbols
_kern_unpaged_edata ... _kern_unpaged_edata to mean directly
mapped (pre_init) bss. This was previously _edata and _end.
. added a sanity check in kmain (ben@)
The values can be verified by:
${CROSS_TOOLS}/arm-elf32-minix-objdump -xD ${OBJ}/kernel/kernel
Signed-off-by: Jan Kobler <eng1@koblersystems.de>
Ben Gras [Mon, 7 Jul 2014 13:02:28 +0000 (15:02 +0200)]
size_t declaration
Wojciech Zajac [Wed, 25 Jun 2014 11:45:06 +0000 (13:45 +0200)]
Fixed usb_storage to support more USB sticks
More TEST UNIT READY calls, as some sticks seem to require them, while others are indifferent.
Mass storage 'reset recovery' is disabled by default, as it broke communication with some sticks.
Minor fixes.
Wojciech Zajac [Wed, 25 Jun 2014 08:09:20 +0000 (10:09 +0200)]
USB bulk only transport 'reset recovery' added
Control URB formatting for mass storage driver was also fixed.
Wojciech Zajac [Tue, 24 Jun 2014 09:35:44 +0000 (11:35 +0200)]
Corrected invalid URBs handling
Wojciech Zajac [Mon, 23 Jun 2014 10:59:39 +0000 (12:59 +0200)]
Make MUSB use 'interval' for bulk transfers
Wojciech Zajac [Mon, 23 Jun 2014 10:32:44 +0000 (12:32 +0200)]
More endpoint descriptor data held by usb_storage
Makes usb_storage remember endpoint interval and other parameters, instead of endpoint number only.
Wojciech Zajac [Mon, 23 Jun 2014 09:06:20 +0000 (11:06 +0200)]
Removed unused transfer flags for usb_storage
Wojciech Zajac [Wed, 18 Jun 2014 10:17:01 +0000 (12:17 +0200)]
Graceful exiting for USBD
Wojciech Zajac [Wed, 18 Jun 2014 09:54:24 +0000 (11:54 +0200)]
USBD return value for wrong URB submit
Wojciech Zajac [Wed, 18 Jun 2014 08:57:40 +0000 (10:57 +0200)]
Graceful exiting for mass storage driver
Exit signal is now correctly handled and allocated memory is freed, before exiting.
Wojciech Zajac [Tue, 17 Jun 2014 10:12:11 +0000 (12:12 +0200)]
Generalization of USB transfer's error handling
No longer assumes EP0 for control transfer, in general HCD code.
Some additional cleanup.
David van Moolenbroek [Sun, 24 Nov 2013 20:50:44 +0000 (21:50 +0100)]
libc: make ttyname(3) use devname(3)
There was an off-by-one in the old MINIX-specific implementation,
which caused ttyname(3) to fail at random. Since we now have a working
devname(3), there is no need for MINIX-specific code anymore here.
Change-Id: I27d8b6c4f66c84f383156ed494b740d071af02a7
Ben Gras [Tue, 17 Jun 2014 15:51:52 +0000 (17:51 +0200)]
Fix passwd entries, from old format to new.
Change-Id: I78278f0cdc6b9b87bf9b3a14970a462037589d87
Ben Gras [Mon, 16 Jun 2014 17:27:46 +0000 (19:27 +0200)]
pty range improvement
Lionel Sambuc [Fri, 6 Jun 2014 11:00:39 +0000 (13:00 +0200)]
Message type for CDEV_{READ,WRITE,IOCTL}
Change-Id: Ia89c98410d3775fe3b6621576eadd186d60ec894
Lionel Sambuc [Fri, 6 Jun 2014 12:21:20 +0000 (14:21 +0200)]
Message type for CDEV_SELECT
Change-Id: I74e67ef2206102fe4686efb35d1aaf42db5cd236
Lionel Sambuc [Fri, 6 Jun 2014 11:19:58 +0000 (13:19 +0200)]
Message type for CDEV_CANCEL
Change-Id: I4a58f314e140c043392503c079e3d9b994c50b2f
Lionel Sambuc [Fri, 6 Jun 2014 07:46:13 +0000 (09:46 +0200)]
Message type for CDEV_{OPEN,CLOSE}
Change-Id: Ie58511aef2da968129a405a4ad44d0330a2adcb2
Lionel Sambuc [Mon, 19 May 2014 11:57:19 +0000 (13:57 +0200)]
Message type for CDEV_SEL{1,2}
Change-Id: I4857363a62eeede2e137f3354566699b08cb235d
Lionel Sambuc [Mon, 19 May 2014 11:14:24 +0000 (13:14 +0200)]
Message type for CDEV_REPLY
Change-Id: I555bf35a43c59e7d7b6180b625021b3c13bbeaa3
Lionel Sambuc [Wed, 4 Jun 2014 15:23:50 +0000 (17:23 +0200)]
Message type for TTY_FKEY_CONTROL
Change-Id: Ic7a8901089f14f65e840bd88b087b733c3e3bdee
Lionel Sambuc [Wed, 4 Jun 2014 14:04:36 +0000 (16:04 +0200)]
FKEY_EVENTS cleanups
- Fix a bug where an FKEY_EVENT request would always return EINVAL
- Replace two manual usage of FKEY_EVENT messages by a call to
fkey_events which is mapped to fkey_ctl.
Change-Id: I7bc54cade45a29f14c89313b3ec4c28d81a4ec93
Wojciech Zajac [Mon, 16 Jun 2014 12:00:03 +0000 (14:00 +0200)]
Memory related fixes for DDE/USBD
DDEKit has proper thread termination now. No more memory leaks on usb stick removal.
MUSB fixes for IRQ and memory mapping.
Wojciech Zajac [Fri, 13 Jun 2014 13:23:42 +0000 (15:23 +0200)]
Upgraded HCD transfers
Types for data request are fixed and commented.
Control transfer has additional call for proper completion validation.
Wojciech Zajac [Fri, 13 Jun 2014 10:50:13 +0000 (12:50 +0200)]
Unification of various HCD types.
DDEKit URB's are no longer directly handled by HCD but rather translated and validated to avoid type conversion issues and illegal values.
Ben Gras [Wed, 11 Jun 2014 11:35:21 +0000 (13:35 +0200)]
set NETBSDSRCDIR in kyua-atf-compat
Ben Gras [Wed, 19 Mar 2014 23:01:48 +0000 (00:01 +0100)]
gold -Ttext=.. workaround
replace invocations of -Ttext=.. with --section-start=.text=.. for
gnu gold-ld. it was giving very weird results when given page-rounded
values. --section-start=.text=.. works for both bfd-ld and gold.
Wojciech Zajac [Mon, 9 Jun 2014 08:46:54 +0000 (10:46 +0200)]
Linking blocktest without libc to allow terminal output
Thomas Cort [Sun, 8 Jun 2014 11:07:55 +0000 (07:07 -0400)]
Importing games/colorbars
No Minix specific changes needed.
Change-Id: Id853551c7d19adc68cfc76ddc353bccf0510387a
Wojciech Zajac [Fri, 6 Jun 2014 08:28:38 +0000 (10:28 +0200)]
Fixed setup packet configuration for USBD and disconnection cleanup
Wojciech Zajac [Wed, 4 Jun 2014 13:40:00 +0000 (15:40 +0200)]
Fix for usbd-usb_storage pairing and URB handling. Additional cleanup.
Wojciech Zajac [Tue, 3 Jun 2014 12:58:48 +0000 (14:58 +0200)]
Resolution of some currently fixable TODOs
Lionel Sambuc [Mon, 26 May 2014 14:34:34 +0000 (16:34 +0200)]
Message type for TTY_INPUT_EVENT
Change-Id: I2bae0a2c8326b36c438f9b340c394ec66189c1c8
Lionel Sambuc [Mon, 26 May 2014 10:12:11 +0000 (12:12 +0200)]
Message type for SYS_CLEAR
Change-Id: I3d894edcf672d180aee38fd84bd06339bdf7fa9b
Lionel Sambuc [Mon, 26 May 2014 10:03:25 +0000 (12:03 +0200)]
Message type for SYS_EXEC
Change-Id: I349e28b8bb3705386f04e4860cffc6ed74a5532f
Lionel Sambuc [Mon, 26 May 2014 09:42:00 +0000 (11:42 +0200)]
Message type for SYS_FORK
Change-Id: Ibcf4fdfec51129b2be3d667ec07aea0f42e3fd89
Lionel Sambuc [Mon, 26 May 2014 08:41:06 +0000 (10:41 +0200)]
Message type for SYS_{S,G}ETMCONTEXT
Change-Id: I388eee89ba8cc6e6603b3193297b81179c1e6975
Lionel Sambuc [Fri, 23 May 2014 10:53:48 +0000 (12:53 +0200)]
Message type for SYS_SETGRANT
Change-Id: I542f839d7992d3348fef19c51bfcb58bb408d9f4
Lionel Sambuc [Fri, 23 May 2014 09:08:21 +0000 (11:08 +0200)]
Message type for SYS_PRIVCTL
Change-Id: I5bf4d88ca571f2a701e426aae67c6b04705ce511
Lionel Sambuc [Fri, 23 May 2014 08:18:35 +0000 (10:18 +0200)]
Message type for SYS_STATECTL
Change-Id: I19443aa018d6c670e2b44f1f98bce2fb297a7f21
Lionel Sambuc [Fri, 23 May 2014 08:09:09 +0000 (10:09 +0200)]
Message type for SYS_TRACE
Change-Id: Ib579fab949b76797ea7d6cb5ff4ae3d9b32f630c
Lionel Sambuc [Thu, 22 May 2014 13:31:51 +0000 (15:31 +0200)]
Message type for SYS_SETTIME
Change-Id: I10c2c27c0c9749b49d70735175e530b4341440dc
Lionel Sambuc [Thu, 22 May 2014 13:30:51 +0000 (15:30 +0200)]
Message type for SYS_STIME
Change-Id: Ic4401e736bb66960e2ea4b30f5e1946dd93fd76e
Lionel Sambuc [Thu, 22 May 2014 09:32:14 +0000 (11:32 +0200)]
Message type for SYS_TIMES
Change-Id: Ia408aa7d76c47da9f600a724f82b347ba6ac641b
Lionel Sambuc [Thu, 22 May 2014 08:46:02 +0000 (10:46 +0200)]
Message type for SYS_GETINFO and SYS_GETWHOAMI
Change-Id: I9cea3f65b29e30555c8b47865e12c7d19a74a3c3
Lionel Sambuc [Thu, 22 May 2014 08:05:44 +0000 (10:05 +0200)]
Message type for SYS_VUMAP
Change-Id: I9accdf887c119566429ab0803436b068729bcd85
Lionel Sambuc [Wed, 21 May 2014 15:54:35 +0000 (17:54 +0200)]
Message type for SYS_UMAP{,_REMOTE}
Change-Id: Id46df10aee6189a0d3673013b498c7cc79edcc7e
Lionel Sambuc [Wed, 21 May 2014 15:21:26 +0000 (17:21 +0200)]
Message type for SYS_{VIR,PHYS}COPY
Change-Id: I15d1acf9992d1b799f5687adffb186875fcd0c84
Lionel Sambuc [Wed, 21 May 2014 14:59:30 +0000 (16:59 +0200)]
Message type for SYS_IOPENABLE
Change-Id: I8b089c30c7f9ae75e404f63495bbb199d583f1cd
Lionel Sambuc [Wed, 21 May 2014 14:52:18 +0000 (16:52 +0200)]
Message type for SYS_ABORT
Change-Id: Ic24a4779cc7955cb94f81fec58a358057ca85cb1
Lionel Sambuc [Wed, 21 May 2014 14:44:37 +0000 (16:44 +0200)]
Message type for SYS_IRQCTL
Change-Id: Idef5a1e49aea3eea690e2a9bf046348766a8b944
Lionel Sambuc [Wed, 21 May 2014 08:52:39 +0000 (10:52 +0200)]
Message type for SYS_SETALARM
Change-Id: I2c2ee24c19085cbd1e7ffba7b2db714b2561ff17
Lionel Sambuc [Wed, 21 May 2014 08:45:19 +0000 (10:45 +0200)]
Message type for SYS_VDEVIO
Change-Id: I62ceb5d487c5acd08cb100f340dd387e733180b4
Lionel Sambuc [Tue, 20 May 2014 11:56:35 +0000 (13:56 +0200)]
Message type for SYS_SDEVIO
Change-Id: I2d60a2ccad325236998a7f9af9b4e82fe0c8131f
Lionel Sambuc [Tue, 20 May 2014 11:18:39 +0000 (13:18 +0200)]
Message type for SYS_MEMSET
Change-Id: Icebd04e0c53d9653301550bb598df8719aa66ada
Lionel Sambuc [Tue, 20 May 2014 09:19:27 +0000 (11:19 +0200)]
Message type for DL_{READ,WRITE}V_S
Change-Id: I6e25e8e994b0bdec2bb54f50e6db08e6e935c819
Lionel Sambuc [Tue, 20 May 2014 07:13:26 +0000 (09:13 +0200)]
Message type for DL_TASK_REPLY
Change-Id: I7f15f8f874366e93866f53d7a60a0c7ef9c98636
Lionel Sambuc [Mon, 19 May 2014 17:40:12 +0000 (19:40 +0200)]
Message type for DL_GETSTAT_S
Change-Id: Ia5c2bf7a3d796a6a0463af70059e82fddd43d69c
Lionel Sambuc [Mon, 19 May 2014 17:19:14 +0000 (19:19 +0200)]
Message type for DL_CONF{,_REPLY}
Change-Id: Ib0e435875b6f5cacdcbc8593f9a887b0a4c472c1
Lionel Sambuc [Mon, 19 May 2014 09:37:26 +0000 (11:37 +0200)]
Message type for {PM,VFS,RS,DS}_GETSYSINFO
Change-Id: I64d89f8a1c4704d0d0f420eb1e434cc96fd6351a
Lionel Sambuc [Mon, 19 May 2014 09:25:52 +0000 (11:25 +0200)]
Message type for SVRCTL
Change-Id: Ibdb9edb9878e06cf2a641ffc3975f878a6e41dfb
Lionel Sambuc [Mon, 19 May 2014 09:18:20 +0000 (11:18 +0200)]
Message type for {PM,VFS,VM}_GETRUSAGE
Change-Id: I793d2e9fa8eb0562a46ccbd81aae3dbb517671cc
Lionel Sambuc [Mon, 19 May 2014 08:39:55 +0000 (10:39 +0200)]
Message type for INPUT_SETLEDS
Change-Id: I84ee6ee43d771409526468ce45f1ddc27e9ca986
Lionel Sambuc [Mon, 19 May 2014 08:18:55 +0000 (10:18 +0200)]
Message type for INPUT_EVENT
Change-Id: I50a815623ff4a9b6b0113000a798a3495c911ecf
Lionel Sambuc [Mon, 19 May 2014 07:39:57 +0000 (09:39 +0200)]
Message type for INPUT_CONF
Change-Id: Ib25bd7e9717f203316e303d4f5a411d314ce46ed
Lionel Sambuc [Mon, 19 May 2014 07:19:01 +0000 (09:19 +0200)]
Message type for RTCDEV_*
Change-Id: Ie4257e745e1d8b6a151934949f10c7fdb1ac4778
Lionel Sambuc [Thu, 15 May 2014 14:39:51 +0000 (16:39 +0200)]
Message type for BUSC_I2C_EXEC
Change-Id: I4b6e33df2dd70d40af4a2f2c899324a40107c56a
Lionel Sambuc [Thu, 15 May 2014 14:14:21 +0000 (16:14 +0200)]
Message type for BUSC_I2C_RESERVE
Change-Id: Iedc2615b41c65f826868a70448fb1143bd85670f
Lionel Sambuc [Thu, 15 May 2014 09:45:42 +0000 (11:45 +0200)]
Message type for BUSC_PCI_GET_BAR
Change-Id: I5cb21f09a2c80473101f8da3f435e4dcc3b05491
Lionel Sambuc [Wed, 14 May 2014 16:29:46 +0000 (18:29 +0200)]
Message type for SCHEDULING_STOP
Change-Id: I372c6b9146b459698a0cead68d7cdd53ea074d77
Lionel Sambuc [Wed, 14 May 2014 16:10:23 +0000 (18:10 +0200)]
Message type for SCHEDULING_SET_NICE
Change-Id: I4f8450b0de235627383035653ec58761fc7e3985
Lionel Sambuc [Wed, 14 May 2014 15:57:12 +0000 (17:57 +0200)]
Message type for SCHEDULING_{START,INHERIT}
Change-Id: Iad2b4079f72488ea3c3abef2b4a4fefe26ae9066
Lionel Sambuc [Wed, 14 May 2014 14:59:14 +0000 (16:59 +0200)]
Message type for SCHEDULING_NO_QUANTUM, SYS_SCHEDULE
Change-Id: Ia0f2689067159b4d821092d4ac60efa75e396f7c
Lionel Sambuc [Wed, 14 May 2014 14:39:00 +0000 (16:39 +0200)]
Message type for SYS_SCHEDCTL
Change-Id: Iaccbac1ef99124bc494b835e0d0cf999ea2e3f5a
Lionel Sambuc [Tue, 13 May 2014 17:02:12 +0000 (19:02 +0200)]
Message type for PM_{KILL,SIGACTION}
Change-Id: I7fac9a894e319671e12bfa7430984ca1cf24da33
Lionel Sambuc [Tue, 13 May 2014 16:50:59 +0000 (18:50 +0200)]
Message type for PM_SRV_KILL
Change-Id: I2d74b68db2d006dd375732a7932f20c2cf6a342a
Lionel Sambuc [Tue, 13 May 2014 16:29:11 +0000 (18:29 +0200)]
Message type for PM_SIG{RETURN,SUSPEND,PROCMASK}
Change-Id: Id20352db47892eb6b870ea64ba52b3b1a293cbaa
Lionel Sambuc [Tue, 13 May 2014 15:33:27 +0000 (17:33 +0200)]
Message type for PM_EXIT
Change-Id: Ie78768d95358a701268129587074a48493cf5bbc
Lionel Sambuc [Tue, 13 May 2014 15:26:56 +0000 (17:26 +0200)]
libsys/sef.c: cleanup around sef_exit
- use weak_alias for _exit and __exit instead of stub functions
- remove fallback on PM_EXIT, as sys_exit can't fail, and we busy loop
afterwards if that fails too. There is no reason that a PM_EXIT would
work for a driver or server when sys_exit failed anyway.
Change-Id: I0327fb5c6fba25687cc9dc99fbf9c6d4db7d26e8
Ben Gras [Wed, 21 May 2014 17:32:39 +0000 (19:32 +0200)]
libminixfs: fix assert
Came across this bug.
. setcache assert should be when block currently isn't in use,
as setcache happens when buf becomes unused