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[PATCH] sim: Better profiling
- From: Thiemo Seufer <ths at networkno dot de>
- To: gdb-patches at sources dot redhat dot com
- Date: Tue, 8 Aug 2006 12:48:27 +0100
- Subject: [PATCH] sim: Better profiling
Hello All,
the appended patch uses a prime number to initialise the PC sampling
frequency, this makes scaling effects less likely.
It also fixes an endianness bug in the sample data printing.
Thiemo
2006-08-08 Nigel Stephens <nigel@mips.com>
* sim-profile.c (profile_pc_init): Initialise default profiling
frequency to a prime number.
(profile_print_pc): Convert gmon.out sample data into target
byte order.
Index: sim/common/sim-profile.c
===================================================================
RCS file: /cvs/src/src/sim/common/sim-profile.c,v
retrieving revision 1.5
diff -u -p -r1.5 sim-profile.c
--- sim/common/sim-profile.c 15 Feb 2001 21:14:40 -0000 1.5
+++ sim/common/sim-profile.c 7 Aug 2006 16:52:17 -0000
@@ -519,7 +519,7 @@ profile_pc_init (SIM_DESC sd)
int bucket_size;
/* fill in the frequency if not specified */
if (PROFILE_PC_FREQ (data) == 0)
- PROFILE_PC_FREQ (data) = 256;
+ PROFILE_PC_FREQ (data) = 257;
/* fill in the start/end if not specified */
if (PROFILE_PC_END (data) == 0)
{
@@ -700,6 +700,7 @@ profile_print_pc (sim_cpu *cpu, int verb
sample = 0xffff;
else
sample = PROFILE_PC_COUNT (profile) [loop];
+ H2T (sample);
ok = fwrite (&sample, sizeof (sample), 1, pf);
}
if (ok == 0)