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Re: [patch] SPU gprof support

From: Jeff Johnston <jjohnstn at redhat dot com>
To: Ken Werner <ken at linux dot vnet dot ibm dot com>
Cc: newlib at sourceware dot org
Date: Thu, 27 Nov 2008 15:58:00 -0500
Subject: Re: [patch] SPU gprof support
References: <200811262140.08506.ken@linux.vnet.ibm.com>

Patch applied.

-- Jeff J.

Ken Werner wrote:

Hi,

this patch adds initial support for the GNU profiler on the SPU. The flat profile is based on a histogram that is created using the sampling mechanism provided by spu_timer.h (http://sourceware.org/ml/newlib/2008/msg00316.html). For the call graph the compiler generates a particular prologue that causes every function to call _mcount. The call graph is stored in PPU memory using the named address space support (http://sourceware.org/ml/newlib/2008/msg00600.html).

Ken

libgloss/ChangeLog:

2008-11-26 Ken Werner <ken.werner@de.ibm.com
        * spu/crt0.S: Call __monstartup if profiling is enabled.
        * spu/Makefile.in: Add gcrt1.o gcrt2.o.
newlib/ChangeLog:

2008-11-26 Ken Werner <ken.werner@de.ibm.com>

* libc/machine/spu/Makefile.am: Add spu-mcount.S spu-gmon.c. * libc/machine/spu/spu-gmon.c: New file. * libc/machine/spu/spu-mcount.S: New file.

References:
- [patch] SPU gprof support
  - From: Ken Werner

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