Rename documentation -> Documentation
In order to be closer to the Linux kernel source tree structure, rename documentation to Documentation. Change-Id: I8690f666638ef352d201bd3c3dc1923b0d24cb12 Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-on: http://review.coreboot.org/10110 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
This commit is contained in:
Stefan Reinauer
227
Documentation/gcov.txt
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227
Documentation/gcov.txt
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@@ -0,0 +1,227 @@
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This patch contains our local modifications for gcov-io.h and libgcov.c.
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The file gcov-iov.h is taken from a gcc build (produced at compile
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time). The file gcov-io.c is unchanged.
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--- gcc-4.7.2/gcc/gcov-io.h 2011-12-04 10:27:19.000000000 -0800
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+++ coreboot/src/lib/gcov-io.h 2013-01-12 16:45:57.000000000 -0800
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@@ -163,6 +163,24 @@
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#ifndef GCC_GCOV_IO_H
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#define GCC_GCOV_IO_H
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+#ifdef __COREBOOT__
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+#define GCOV_LINKAGE /* nothing */
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+/* We need the definitions for
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+ BITS_PER_UNIT and
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+ LONG_LONG_TYPE_SIZE
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+ They are defined in gcc/defaults.h and gcc/config/<arch_depend_files>
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+ (like, gcc/config/i386/i386.h). And it can be overridden by setting
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+ in build scripts. Here I hardcoded the value for x86. */
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+#define BITS_PER_UNIT 8
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+#define LONG_LONG_TYPE_SIZE 64
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+
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+/* There are many gcc_assertions. Set the vaule to 1 if we want a warning
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+ message if the assertion fails. */
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+#ifndef ENABLE_ASSERT_CHECKING
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+#define ENABLE_ASSERT_CHECKING 1
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+#endif
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+#endif /* __COREBOOT__ */
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+
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#if IN_LIBGCOV
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/* About the target */
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@@ -232,7 +250,9 @@
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is not also used in a DSO. */
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#if IN_LIBGCOV
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+#ifndef __COREBOOT__
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#include "tconfig.h"
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+#endif /* __COREBOOT__ */
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#define gcov_var __gcov_var
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#define gcov_open __gcov_open
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@@ -455,8 +475,10 @@
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/* Register a new object file module. */
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extern void __gcov_init (struct gcov_info *) ATTRIBUTE_HIDDEN;
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+#ifndef __COREBOOT__
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/* Called before fork, to avoid double counting. */
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extern void __gcov_flush (void) ATTRIBUTE_HIDDEN;
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+#endif
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/* The merge function that just sums the counters. */
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extern void __gcov_merge_add (gcov_type *, unsigned) ATTRIBUTE_HIDDEN;
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--- gcc-4.7.2/libgcc/libgcov.c 2012-01-11 10:50:21.000000000 -0800
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+++ coreboot/src/lib/libgcov.c 2013-01-16 09:45:11.000000000 -0800
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@@ -25,12 +25,41 @@
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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+#define __COREBOOT__
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+#ifdef __COREBOOT__
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+#include <stdlib.h>
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+#include <string.h>
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+#include <console/console.h>
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+#include <assert.h>
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+typedef s32 pid_t;
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+#define gcc_assert(x) ASSERT(x)
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+#define fprintf(file, x...) printk(BIOS_ERR, x)
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+#define alloca(size) __builtin_alloca (size)
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+#include "gcov-glue.c"
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+
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+/* Define MACROs to be used by coreboot compilation. */
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+# define L_gcov
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+# define L_gcov_interval_profiler
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+# define L_gcov_pow2_profiler
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+# define L_gcov_one_value_profiler
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+# define L_gcov_indirect_call_profiler
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+# define L_gcov_average_profiler
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+# define L_gcov_ior_profiler
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+
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+# define HAVE_CC_TLS 0
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+# define __GCOV_KERNEL__
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+
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+# define IN_LIBGCOV 1
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+# define IN_GCOV 0
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+#else /* __COREBOOT__ */
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#include "tconfig.h"
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#include "tsystem.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "libgcc_tm.h"
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+#endif /* __COREBOOT__ */
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+#ifndef __COREBOOT__
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#if defined(inhibit_libc)
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#define IN_LIBGCOV (-1)
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#else
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@@ -41,6 +70,7 @@
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#define GCOV_LINKAGE /* nothing */
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#endif
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#endif
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+#endif /* __COREBOOT__ */
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#include "gcov-io.h"
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#if defined(inhibit_libc)
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@@ -68,12 +98,17 @@
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#else
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+#ifndef __COREBOOT__
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#include <string.h>
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#if GCOV_LOCKED
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/stat.h>
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#endif
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+#else
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+void __gcov_merge_add(gcov_type *counters __attribute__ ((unused)),
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+ unsigned n_counters __attribute__ ((unused))) {}
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+#endif /* __COREBOOT__ */
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#ifdef L_gcov
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#include "gcov-io.c"
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@@ -99,6 +134,10 @@
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static int
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create_file_directory (char *filename)
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{
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+#ifdef __COREBOOT__
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+ (void) filename;
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+ return 0;
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+#else
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#if !defined(TARGET_POSIX_IO) && !defined(_WIN32)
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(void) filename;
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return -1;
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@@ -137,6 +176,7 @@
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};
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return 0;
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#endif
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+#endif
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}
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static struct gcov_fn_buffer *
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@@ -279,7 +319,7 @@
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struct gcov_ctr_summary *cs_ptr;
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const struct gcov_ctr_info *ci_ptr;
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unsigned t_ix;
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- int f_ix;
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+ int f_ix = 0;
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gcov_unsigned_t c_num;
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const char *gcov_prefix;
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int gcov_prefix_strip = 0;
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@@ -329,6 +369,7 @@
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}
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}
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+#ifndef __COREBOOT__
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{
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/* Check if the level of dirs to strip off specified. */
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char *tmp = getenv("GCOV_PREFIX_STRIP");
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@@ -352,6 +393,7 @@
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prefix_length--;
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}
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else
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+#endif
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prefix_length = 0;
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/* If no prefix was specified and a prefix stip, then we assume
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@@ -696,8 +738,10 @@
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if (filename_length > gcov_max_filename)
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gcov_max_filename = filename_length;
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+#ifndef __COREBOOT__
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if (!gcov_list)
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atexit (gcov_exit);
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+#endif
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info->next = gcov_list;
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gcov_list = info;
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@@ -767,14 +811,15 @@
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#ifdef L_gcov_merge_single
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/* The profile merging function for choosing the most common value.
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- It is given an array COUNTERS of N_COUNTERS old counters and it
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- reads the same number of counters from the gcov file. The counters
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- are split into 3-tuples where the members of the tuple have
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- meanings:
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-
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- -- the stored candidate on the most common value of the measured entity
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- -- counter
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- -- total number of evaluations of the value */
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+ * It is given an array COUNTERS of N_COUNTERS old counters and it
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+ * reads the same number of counters from the gcov file. The counters
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+ * are split into 3-tuples where the members of the tuple have
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+ * meanings:
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+ *
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+ * -- the stored candidate on the most common value of the measured entity
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+ * -- counter
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+ * -- total number of evaluations of the value
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+ */
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void
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__gcov_merge_single (gcov_type *counters, unsigned n_counters)
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{
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@@ -805,15 +850,16 @@
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#ifdef L_gcov_merge_delta
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/* The profile merging function for choosing the most common
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- difference between two consecutive evaluations of the value. It is
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- given an array COUNTERS of N_COUNTERS old counters and it reads the
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- same number of counters from the gcov file. The counters are split
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- into 4-tuples where the members of the tuple have meanings:
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-
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- -- the last value of the measured entity
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- -- the stored candidate on the most common difference
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- -- counter
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- -- total number of evaluations of the value */
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+ * difference between two consecutive evaluations of the value. It is
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+ * given an array COUNTERS of N_COUNTERS old counters and it reads the
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+ * same number of counters from the gcov file. The counters are split
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+ * into 4-tuples where the members of the tuple have meanings:
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+ *
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+ * -- the last value of the measured entity
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+ * -- the stored candidate on the most common difference
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+ * -- counter
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+ * -- total number of evaluations of the value
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+ */
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void
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__gcov_merge_delta (gcov_type *counters, unsigned n_counters)
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{
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