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authorVladimir Prus <vladimir@codesourcery.com>2007-04-10 07:57:31 +0000
committerVladimir Prus <vladimir@codesourcery.com>2007-04-10 07:57:31 +0000
commitb3296dc54c51d28ada4c97aca7f55a4abfe09d9a (patch)
tree574e097a5069021c4cb996d8012d8830e4ca1c0b /gprof/hist.h
parent8e77c9de92cec383d9fa3b1f8cf10e4840174396 (diff)
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* hist.h (struct histogram)
(histograms, num_histograms): New. * hist.c (find_histogram, find_histogram_for_pc) (read_histogram_header): New. (s_lowpc, s_highpc, lowpc, highpc, hist_num_bins) (hist_sample): Remove. (hist_read_rec): Use the above, and handle multiple histogram records with disjoint address ranges. (hist_write_hist): Support several histogram records. (scale_and_align_entries): Adjust for multiple histograms. (hist_assign_samples_1): New. (hist_assign_samples): Use the above. (hist_clip_symbol_address): New. * hist.h (hist_check_address) (hist_clip_symbol_address): Declare. * gmon_io.c (gmon_out_read, gmon_out_write): Adjust handling of legacy format for multiple histogram changes. * corefile.c (find_call): Check for core_text_space and clip symbol address range here. * vax.c (vax_find_call): Don't check for core_text_space, or clip the symbol's address range here. Use hist_check_address to check call's target address. * sparc.c: Likewise. * tahoe.c: Likewise. * i386.c: Likewise. * mips.c: Likewise. Also use core_text_sect->vma as the base address for code accesses, just like other machine-specific routines do. * gprof.texi: Adjust for the new logic.
Diffstat (limited to 'gprof/hist.h')
-rw-r--r--gprof/hist.h29
1 files changed, 23 insertions, 6 deletions
diff --git a/gprof/hist.h b/gprof/hist.h
index 96624c6..4ed6958 100644
--- a/gprof/hist.h
+++ b/gprof/hist.h
@@ -21,20 +21,37 @@ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
#ifndef hist_h
#define hist_h
-extern bfd_vma s_lowpc; /* Lowpc from the profile file. */
-extern bfd_vma s_highpc; /* Highpc from the profile file. */
-extern bfd_vma lowpc, highpc; /* Range profiled, in UNIT's. */
-extern unsigned int hist_num_bins; /* Number of histogram bins. */
-extern int *hist_sample; /* Code histogram. */
+typedef struct histogram
+{
+ bfd_vma lowpc;
+ bfd_vma highpc;
+ unsigned int num_bins;
+ int *sample; /* Histogram samples (shorts in the file!). */
+} histogram;
+
+histogram *histograms;
+unsigned num_histograms;
/* Scale factor converting samples to pc values:
each sample covers HIST_SCALE bytes. */
extern double hist_scale;
-
extern void hist_read_rec (FILE *, const char *);
extern void hist_write_hist (FILE *, const char *);
extern void hist_assign_samples (void);
extern void hist_print (void);
+/* Checks if ADDRESS is within the range of addresses for which
+ we have histogram data. Returns 1 if so and 0 otherwise. */
+extern int hist_check_address (unsigned address);
+
+/* Given a range of addresses for a symbol, find a histogram record
+ that intersects with this range, and clips the range to that
+ histogram record, modifying *P_LOWPC and *P_HIGHPC.
+
+ If no intersection is found, *P_LOWPC and *P_HIGHPC will be set to
+ one unspecified value. If more that one intersection is found,
+ an error is emitted. */
+extern void hist_clip_symbol_address (bfd_vma *p_lowpc, bfd_vma *p_highpc);
+
#endif /* hist_h */