Commit Graph

16 Commits

Author SHA1 Message Date
Pranith Kumar 435405ac59 Disable warn about left shifts of negative values
It seems like there's no good reason for the compiler to exploit the
undefinedness of left shifts.  GCC explicitly documents that they do not
use at all this possibility and, while they also say this is subject
to change, they have been saying this for 10 years (since the wording
appeared in the GCC 4.0 manual).

Disable these warnings by passing in -Wno-shift-negative-value.

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[pranith: forward-port part of patch to 2.7]
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
2016-08-09 22:57:36 +02:00
Markus Armbruster d76a3bf5c4 HACKING: Add a section on error handling and reporting
Inspired by an RFC PATCH from Lluís Vilanova.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1454522628-28294-3-git-send-email-armbru@redhat.com>
Reviewed-by: Lluís Vilanova <vilanova@ac.upc.edu>
2016-02-09 13:19:49 +01:00
Peter Maydell 2be8d45098 HACKING: Document vaddr type usage
Also extend documentation of target_ulong and abi_ulong.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23 02:41:31 +02:00
Paolo Bonzini 6eebf958ab osdep, kvm: rename low-level RAM allocation functions
This is preparatory to the introduction of a separate freeing API.

Reported-by: Amos Kong <akong@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Amos Kong <akong@redhat.com>
Message-id: 1368454796-14989-2-git-send-email-pbonzini@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-05-14 08:53:31 -05:00
Peter Maydell 475363176c HACKING: List areas where we may rely on impdef C behaviour
Add a section to HACKING saying which version of the C spec
we use and describing the bits of implementation defined C
compiler behaviour which C code in QEMU is allowed to rely on.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-08 14:27:40 +00:00
Avi Kivity a8170e5e97 Rename target_phys_addr_t to hwaddr
target_phys_addr_t is unwieldly, violates the C standard (_t suffixes are
reserved) and its purpose doesn't match the name (most target_phys_addr_t
addresses are not target specific).  Replace it with a finger-friendly,
standards conformant hwaddr.

Outstanding patchsets can be fixed up with the command

  git rebase -i --exec 'find -name "*.[ch]"
                        | xargs s/target_phys_addr_t/hwaddr/g' origin

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-10-23 08:58:25 -05:00
Jim Meyering 9b9e3ec1b4 doc: update HACKING wrt strncpy/pstrcpy
Reword the section on strncpy: its NUL-filling is important
in some cases.  Mention that pstrcpy's signature is different.

Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-10-05 07:58:38 -05:00
Peter Maydell f603a687ff HACKING: clarify allocation/free recommendations
Clarify the allocation/free recommendations; this is mostly
just tidying up following the global-search-and-replace done
with the conversion to the GLib g_malloc and friends.

Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-15 09:27:23 -06:00
Blue Swirl 58a06675d3 Convert last qemu_free and qemu_malloc uses
7267c0947d missed
a few cases, fix them.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-08-21 18:42:08 +00:00
Anthony Liguori 145e21dbd0 Update HACKING to refer to g_malloc instead of qemu_malloc
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-21 08:16:56 -05:00
Stefan Weil 417131fb9a HACKING: Update status of format checking
Hopefully all functions with printf like arguments now use format checking.

This was tested with default build configuration on linux
and windows hosts (including some cross compilations),
so chances are good that there remain few (if any) functions
without format checking.

Therefore the last comment in HACKING is no longer valid but misleading.

Cc: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-02-25 16:31:05 -06:00
Blue Swirl 876f256bde HACKING: add rules for printf-like functions
Add rules for printf-like functions, based on libvirt HACKING.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-09-10 18:53:11 +00:00
Blue Swirl d241f143c9 HACKING: add string management rules
Add string management rules, somewhat like libvirt HACKING.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-09-10 18:53:05 +00:00
Blue Swirl 54b2cc5030 HACKING: add memory management rules
Add memory management rules, somewhat like libvirt HACKING.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-09-10 18:52:52 +00:00
Blue Swirl 84174436a6 HACKING: add C type rules
Add C type rules, adapted from libvirt HACKING. Also include
a description of special QEMU scalar types.

Move typedef rule from CODING_STYLE rule 3 to HACKING rule 6
where it belongs.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-09-10 18:47:31 +00:00
Blue Swirl 45fad878d7 HACKING: add preprocessor rules
Add a new file, HACKING, in order to collect recurring
issues with submitted patches.

Start with preprocessor rules, adapted from libvirt HACKING.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2010-09-10 18:46:00 +00:00