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[Cegcc-svn] SF.net SVN: cegcc: [926] trunk/cegcc/src/gcc/gcc
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From: <dan...@us...> - 2007-06-02 12:46:30
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Revision: 926
http://svn.sourceforge.net/cegcc/?rev=926&view=rev
Author: dannybackx
Date: 2007-06-02 05:46:10 -0700 (Sat, 02 Jun 2007)
Log Message:
-----------
Put this code in SVN, has been on my disk for too long. This is the
-fcoverage-base option that allows you to specify at compile time where the
application will put the coverage files.
This has been submitted to gcc-patches.
Modified Paths:
--------------
trunk/cegcc/src/gcc/gcc/ChangeLog.ce
trunk/cegcc/src/gcc/gcc/common.opt
trunk/cegcc/src/gcc/gcc/coverage.c
trunk/cegcc/src/gcc/gcc/doc/gcov.texi
trunk/cegcc/src/gcc/gcc/libgcov.c
trunk/cegcc/src/gcc/gcc/opts.c
trunk/cegcc/src/gcc/gcc/toplev.h
Modified: trunk/cegcc/src/gcc/gcc/ChangeLog.ce
===================================================================
--- trunk/cegcc/src/gcc/gcc/ChangeLog.ce 2007-05-31 21:58:28 UTC (rev 925)
+++ trunk/cegcc/src/gcc/gcc/ChangeLog.ce 2007-06-02 12:46:10 UTC (rev 926)
@@ -1,3 +1,12 @@
+2007-06-02 Danny Backx <dan...@us...>
+ * toplev.h opts.c coverage.c common.opt libgcov.c : Add support for
+ -fcoverage-base option. This supports --coverage in a
+ cross-development environment where it is not always easy to use run
+ time environment variables. This option works at compile time. This
+ has been submitted to gcc-patches.
+ * doc/gcov.texi : Add documentation for -fcoverage-base.
+
+
2006-12-21 Danny Backx <dan...@us...>
* config/arm/t-strongarm-pe config/arm/t-strongarm-elf config/arm/t-pe
Modified: trunk/cegcc/src/gcc/gcc/common.opt
===================================================================
--- trunk/cegcc/src/gcc/gcc/common.opt 2007-05-31 21:58:28 UTC (rev 925)
+++ trunk/cegcc/src/gcc/gcc/common.opt 2007-06-02 12:46:10 UTC (rev 926)
@@ -309,6 +309,10 @@
Common Report Var(flag_no_common,0)
Do not put uninitialized globals in the common section
+fcoverage-base=
+Common Joined Var(flag_coverage_base)
+Directory in which to put coverage analysis files, for cross-compiler environments
+
fcprop-registers
Common Report Var(flag_cprop_registers)
Perform a register copy-propagation optimization pass
Modified: trunk/cegcc/src/gcc/gcc/coverage.c
===================================================================
--- trunk/cegcc/src/gcc/gcc/coverage.c 2007-05-31 21:58:28 UTC (rev 925)
+++ trunk/cegcc/src/gcc/gcc/coverage.c 2007-06-02 12:46:10 UTC (rev 926)
@@ -89,6 +89,7 @@
static char *bbg_file_name;
static unsigned bbg_file_opened;
static int bbg_function_announced;
+char *coverage_base = NULL;
/* Name of the count data file. */
static char *da_file_name;
@@ -813,24 +814,22 @@
TREE_CHAIN (field) = fields;
fields = field;
- /*
- * Additional environment variable for cross-development.
- */
- if (gcov_cross_prefix = getenv ("GCOV_CROSS_PREFIX"))
- {
- filename = concat (gcov_cross_prefix, "/", da_file_name, NULL);
- filename_len = strlen (filename);
- filename_string = build_string (filename_len + 1, filename);
- }
+ /* Additional command line argument for cross-development */
+ if (coverage_base)
+ {
+ filename = concat (coverage_base, "/", da_file_name, NULL);
+ filename_len = strlen (filename);
+ filename_string = build_string (filename_len + 1, filename);
+ }
else
- {
- filename = getpwd ();
- filename = (filename && da_file_name[0] != '/'
- ? concat (filename, "/", da_file_name, NULL)
- : da_file_name);
- filename_len = strlen (filename);
- filename_string = build_string (filename_len + 1, filename);
- }
+ {
+ filename = getpwd ();
+ filename = (filename && da_file_name[0] != '/'
+ ? concat (filename, "/", da_file_name, NULL)
+ : da_file_name);
+ filename_len = strlen (filename);
+ filename_string = build_string (filename_len + 1, filename);
+ }
if (filename != da_file_name)
free (filename);
Modified: trunk/cegcc/src/gcc/gcc/doc/gcov.texi
===================================================================
--- trunk/cegcc/src/gcc/gcc/doc/gcov.texi 2007-05-31 21:58:28 UTC (rev 925)
+++ trunk/cegcc/src/gcc/gcc/doc/gcov.texi 2007-06-02 12:46:10 UTC (rev 926)
@@ -543,10 +543,14 @@
absolute directory structure on the target system. The program will try
to create the needed directory structure, if it is not already present.
-To support cross-profiling, a program compiled with @option{-fprofile-arcs}
-can relocate the data files based on two environment variables on the target
-platform, or one on the host platform:
+There are two options to support cross-profiling. A command line argument
+to the compiler (-fcoverage-base) allows you to override the directory
+stored in the object file; this happens at compile time. Alternatively,
+two runtime environment variables allow you to relocate the data files.
+Both options have effect only on programs compiled with @option{-fprofile-arcs}.
+The two environment variables:
+
@itemize @bullet
@item
GCOV_PREFIX contains the prefix to add to the absolute paths
@@ -559,11 +563,6 @@
@emph{Note:} GCOV_PREFIX_STRIP has no effect if GCOV_PREFIX is undefined, empty
or non-absolute.
-
-@item
-GCOV_CROSS_PREFIX is a host platform environment variable. Use it to specify
-a target directory to prefix the compiled file name with, replacing the
-compile directory.
@end itemize
For example, if the object file @file{/user/build/foo.o} was built with
@@ -574,13 +573,19 @@
@samp{GCOV_PREFIX=/target/run} and @samp{GCOV_PREFIX_STRIP=1}. Such a
setting will name the data file @file{/target/run/build/foo.gcda}.
-Alternatively, you can set @samp{GCOV_CROSS_PREFIX=/target/run/build} when
+Alternatively, you can use @samp{-fcoverage-base=/target/run/build} when
compiling, to achieve the same effect. The object file will no longer contain
the information @file{/user/build/foo.o} but @file{/target/run/build/foo.o}.
The host and target mechanisms are independent of each other, so they can be
used together.
+The build time command line option can be used like this :
+
+@smallexample
+gcc -fcoverage-base=/target/run -fprofile-arcs -o t.exe t.c
+@end smallexample
+
You must move the data files to the expected directory tree in order to
use them for profile directed optimizations (@option{--use-profile}), or to
use the @command{gcov} tool.
Modified: trunk/cegcc/src/gcc/gcc/libgcov.c
===================================================================
--- trunk/cegcc/src/gcc/gcc/libgcov.c 2007-05-31 21:58:28 UTC (rev 925)
+++ trunk/cegcc/src/gcc/gcc/libgcov.c 2007-06-02 12:46:10 UTC (rev 926)
@@ -328,7 +328,17 @@
#endif
if (!gcov_open (gi_filename))
{
+#ifndef UNDER_CE
fprintf (stderr, "profiling:%s:Cannot open\n", gi_filename);
+#else
+ {
+ wchar_t x[256];
+ int l = strlen(gi_filename);
+ l = (l < 256) ? l : 255;
+ mbstowcs(x, gi_filename, l);
+ MessageBoxW(0, x, L"gcov_open couldn't open file", 0);
+ }
+#endif
continue;
}
}
Modified: trunk/cegcc/src/gcc/gcc/opts.c
===================================================================
--- trunk/cegcc/src/gcc/gcc/opts.c 2007-05-31 21:58:28 UTC (rev 925)
+++ trunk/cegcc/src/gcc/gcc/opts.c 2007-06-02 12:46:10 UTC (rev 926)
@@ -836,6 +836,10 @@
fix_register (arg, 0, 0);
break;
+ case OPT_fcoverage_base_:
+ coverage_base = xstrdup(arg);
+ break;
+
case OPT_fdiagnostics_show_location_:
if (!strcmp (arg, "once"))
diagnostic_prefixing_rule (global_dc) = DIAGNOSTICS_SHOW_PREFIX_ONCE;
Modified: trunk/cegcc/src/gcc/gcc/toplev.h
===================================================================
--- trunk/cegcc/src/gcc/gcc/toplev.h 2007-05-31 21:58:28 UTC (rev 925)
+++ trunk/cegcc/src/gcc/gcc/toplev.h 2007-06-02 12:46:10 UTC (rev 926)
@@ -132,6 +132,7 @@
extern int flag_unswitch_loops;
extern int flag_cprop_registers;
extern int time_report;
+extern char *coverage_base;
/* Things to do with target switches. */
extern void print_version (FILE *, const char *);
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