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Denys Vlasenko cb6f056004 Opotimize "scno >= 0 && scno < nsyscalls" check

gcc can't figure out on its own that this check can be done with
single compare, and does two compares. We can help it by casting
scno to unsigned long: ((unsigned long)(scno) < nsyscalls)

* defs.h: New macro SCNO_IN_RANGE(long_var).
* count.c (count_syscall): Use SCNO_IN_RANGE() instead of open-coded check.
* syscall.c (getrval2): Use SCNO_IN_RANGE() instead of open-coded check.
This fixes a bug: missing check for scno < 0 and scno > nsyscalls
instead of scno >= nsyscalls.
(get_scno): Use SCNO_IN_RANGE() instead of open-coded check.
This fixes a bug: scno > nsyscalls instead of scno >= nsyscalls.
(known_scno): Use SCNO_IN_RANGE() instead of open-coded check.
(internal_syscall): Likewise.
(syscall_enter): Likewise.
(trace_syscall_entering): Likewise.
(get_error): Likewise.
(trace_syscall_exiting): Likewise.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>

2011-08-25 01:13:43 +02:00

debian

Prepare for 4.6 release

2011-03-14 15:39:36 +00:00

freebsd

Stop using nargs == -1 in syscallent tables

2011-08-23 13:24:17 +02:00

linux

Define MAX_ARGS to 6 for all Linux arches

2011-08-23 18:04:25 +02:00

Fix off_t/rlim_t size checks when cross-compiling

2010-09-15 15:36:00 +00:00

sunos4

Whitespace cleanups. no code changes.

2011-06-07 12:13:24 +02:00

svr4

Stop using nargs == -1 in syscallent tables

2011-08-23 13:24:17 +02:00

test

Improve code readability by avoiding assignments inside if()

2011-08-23 12:53:01 +02:00

tests

tests: finish ptrace_setoptions_* merge

2011-06-21 15:03:17 +00:00

.gitignore

linux/ioctlent: unify them all

2011-03-14 15:32:38 +00:00

.mailmap

Generate much of the CREDITS file from git log

2011-02-24 01:51:15 +00:00

AUTHORS

2002-12-22 Roland McGrath <roland@redhat.com>

2002-12-30 00:51:30 +00:00

bjm.c

Whitespace cleanups. no code changes.

2011-06-07 12:13:24 +02:00

block.c

Fix compilation on linux 2.4.x

2011-08-23 12:53:00 +02:00

ChangeLog-CVS

Generate ChangeLog from git log

2009-07-08 21:01:21 +00:00

configure.ac

Fix compilation on linux 2.4.x

2011-08-23 12:53:00 +02:00

update copyright

2002-03-31 18:43:00 +00:00

count.c

Opotimize "scno >= 0 && scno < nsyscalls" check

2011-08-25 01:13:43 +02:00

CREDITS.in

* CREDITS.in: Fix typo.

2011-03-15 15:46:52 +00:00

defs.h

Opotimize "scno >= 0 && scno < nsyscalls" check

2011-08-25 01:13:43 +02:00

desc.c

Improve code readability by avoiding assignments inside if()

2011-08-23 12:53:01 +02:00

errnoent.sh

Mark shell scripts as executable

2009-09-18 12:07:03 +00:00

file.c

Improve code readability by avoiding assignments inside if()

2011-08-23 12:53:01 +02:00

git-set-file-times

* git-set-file-times: Import from rsync.

2009-10-09 23:07:28 +00:00

gitlog-to-changelog

Generate ChangeLog from git log

2009-07-08 21:01:21 +00:00

HACKING-scripts

HACKING-scripts: new doc file by Mike Frysinger

2009-02-23 07:56:01 +00:00

INSTALL

Cleanup trailing whitespaces and indentation that uses spaces before tabs

2009-07-08 14:57:27 +00:00

io.c

Improve code readability by avoiding assignments inside if()

2011-08-23 12:53:01 +02:00

ioctl.c

Convert ioctl_next_match() to new-style C function definition

2011-08-23 12:53:01 +02:00

ioctlsort.c

Fix const-correctness issues uncovered by gcc -Wwrite-strings

2010-09-07 00:59:18 +00:00

ipc.c

Whitespace cleanups. no code changes.

2011-06-07 12:13:24 +02:00

make-dist

Generate an xz tar archive of the distribution

2011-02-27 14:05:58 +00:00

Makefile.am

Add ability to print file descriptor paths and filter by those paths

2011-04-08 20:47:56 +00:00

mem.c

Fix argument printing in sys_mmap64

2011-08-23 17:51:58 +02:00

net.c

Whitespace cleanups. No code changes.

2011-06-22 14:32:43 +02:00

NEWS

Prepare for 4.6 release

2011-03-14 15:39:36 +00:00

pathtrace.c

Whitespace cleanups. No code changes.

2011-06-22 14:32:43 +02:00

PORTING

Initial revision

1999-02-19 00:21:36 +00:00

proc.c

"Modernize" all old-style function parameter declarations

2011-05-30 14:00:14 +02:00

process.c

Conditionally optimize out unused code

2011-08-23 12:53:02 +02:00

quota.c

Whitespace cleanups. No code changes.

2011-06-22 14:32:43 +02:00

README

More cleanups from Mike Frysingler:

2009-02-23 08:07:45 +00:00

README-freebsd

trailing whitespace removal, no code changes

2009-01-02 13:03:44 +00:00

README-hacking

Generate ChangeLog from git log

2009-07-08 21:01:21 +00:00

README-linux

Cleanup trailing whitespaces and indentation that uses spaces before tabs

2009-07-08 14:57:27 +00:00

README-sunos4

Initial revision

1999-02-19 00:21:36 +00:00

README-svr4

Cleanup trailing whitespaces and indentation that uses spaces before tabs

2009-07-08 14:57:27 +00:00

resource.c

Handle biarch get/setrlimit

2010-07-17 17:46:28 +02:00

scsi.c

2007-03-29 Vladimir Nadvornik <nadvornik@suse.cz>

2007-06-30 11:37:09 +00:00

signal.c

Conditionally optimize out unused code

2011-08-23 12:53:02 +02:00

signalent.sh

Mark shell scripts as executable

2009-09-18 12:07:03 +00:00

sock.c

Whitespace cleanups. no code changes.

2011-06-07 12:13:24 +02:00

strace-graph

Cleanup trailing whitespaces and indentation that uses spaces before tabs

2009-07-08 14:57:27 +00:00

strace.1

Add ability to print file descriptor paths and filter by those paths

2011-04-08 20:47:56 +00:00

strace.c

Rename some functions, delete unused one. No code changes

2011-08-24 17:53:52 +02:00

strace.spec

Prepare for 4.6 release

2011-03-14 15:39:36 +00:00

stream.c

Whitespace cleanups. no code changes.

2011-06-07 12:13:24 +02:00

syscall.c

Opotimize "scno >= 0 && scno < nsyscalls" check

2011-08-25 01:13:43 +02:00

syscallent.sh

Stop using nargs == -1 in syscallent tables

2011-08-23 13:24:17 +02:00

system.c

* system.c (sys_capget, sys_capset): Fix pointer arithmetics

2011-06-23 13:25:09 +00:00

term.c

Remove dead code

2010-02-04 22:40:57 +00:00

time.c

Improve code readability by avoiding assignments inside if()

2011-08-23 12:53:01 +02:00

TODO

Merge iov fixes from Richard Kettlewell

2001-07-10 13:48:44 +00:00

util.c

Small optimizations related to memory allocation

2011-08-23 12:53:01 +02:00

xlate.el

Initial revision

1999-02-19 00:21:36 +00:00

README

This is strace 4.0, a system call tracer for SunOS 4.x, Linux, System
V release 4, Solaris 2.x and Irix 5.x.  strace is released under a
Berkeley-style license at the request of Paul Kranenburg; see the file
COPYRIGHT for details.

Read the INSTALL file for generic instructions on how to install
strace.  If configure cannot guess your system configuration, you can
specify it on the command line after the other options like this:

	./configure --prefix=/usr i486-linux

A single sunos4.1 binary should work on all the sun4, sun4c and sun4m
kernel architectures.  Let me know if sun4d doesn't work.  Other
i486-*-sysv4 systems may work with little or no tweaking.

See the file NEWS for information on what has changed in recent
versions.

See the file PORTING if you like strace but it doesn't work on an
operating system you use frequently.

See the file CREDITS to see who has contributed to strace.

See the file TODO if you feel like helping out.

You can get the latest version of strace from its homepage at
http://sourceforge.net/projects/strace/ .

Please send bug reports and enhancements to the strace
mailinglist at strace-devel@lists.sourceforge.net, or directly to
Wichert Akkerman <wakkerma@debian.org>

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