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Denys Vlasenko eb0e3e8f50 On X86_64 and I386, use PTRACE_GETREGS to fetch all registers 
Before this change, registers were read with PTRACE_PEEKUSER
ptrace operation, one per register. This is slower than
fetching them all in one ptrace operation.

* defs.h: include asm/ptrace.h on X86_64 and I386.
* syscall.c: New static variables i386_regs and x86_64_regs.
Remove static eax/rax variables.
(get_scno): Fetch all registers with single PTRACE_GETREGS operation.
(get_syscall_result): Likewise.
(syscall_fixup_on_sysenter): Use PTRACE_GETREGS results in i386/x86_64_regs.
(syscall_enter): Set tcp->u_arg[i] from PTRACE_GETREGS results.
(get_error): Set tcp->u_rval, tcp->u_error from PTRACE_GETREGS results.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
2011-08-30 18:53:49 +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
m4 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
COPYRIGHT 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 On X86_64 and I386, use PTRACE_GETREGS to fetch all registers 2011-08-30 18:53:49 +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 Include <sys/param.h> to get PATH_MAX definition 2011-08-30 16:05:26 +00:00
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 Remove stray commas in struct initializers. No code changes 2011-08-25 10:21:13 +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 Do not include <limits.h> 2011-08-30 16:07:01 +00:00
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 On X86_64 and I386, use PTRACE_GETREGS to fetch all registers 2011-08-30 18:53:49 +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>