# HG changeset patch
# User gthomas
# Date 1067523175 0
# Node ID 2a68919a1b99305c47d1a9c9a484f338a0171fc7
# Parent  1ded88da2dd4308bfefcea56d7ccf3ff06508f4d
Enable profiling using timer #1

diff --git a/packages/hal/arm/sa11x0/var/current/ChangeLog b/packages/hal/arm/sa11x0/var/current/ChangeLog
--- a/packages/hal/arm/sa11x0/var/current/ChangeLog
+++ b/packages/hal/arm/sa11x0/var/current/ChangeLog
@@ -1,3 +1,8 @@
+2003-10-30  Gary Thomas  <gary@mlbassoc.com>
+
+	* cdl/hal_arm_sa11x0.cdl: 
+	* src/sa11x0_misc.c: Add support for profiling, using timer #1
+
 2003-07-18  Nick Garnett  <nickg@balti.calivar.com>
 
 	* cdl/hal_arm_sa11x0.cdl:
diff --git a/packages/hal/arm/sa11x0/var/current/cdl/hal_arm_sa11x0.cdl b/packages/hal/arm/sa11x0/var/current/cdl/hal_arm_sa11x0.cdl
--- a/packages/hal/arm/sa11x0/var/current/cdl/hal_arm_sa11x0.cdl
+++ b/packages/hal/arm/sa11x0/var/current/cdl/hal_arm_sa11x0.cdl
@@ -62,6 +62,7 @@ cdl_package CYGPKG_HAL_ARM_SA11X0 {
 
     implements    CYGINT_HAL_ARM_ARCH_STRONGARM
     implements    CYGINT_HAL_VIRTUAL_VECTOR_COMM_BAUD_SUPPORT
+    implements    CYGINT_PROFILE_HAL_TIMER
 
     # Let the architectural HAL see this variant's interrupts file -
     # the SA11x0 has no variation between targets here.
diff --git a/packages/hal/arm/sa11x0/var/current/src/sa11x0_misc.c b/packages/hal/arm/sa11x0/var/current/src/sa11x0_misc.c
--- a/packages/hal/arm/sa11x0/var/current/src/sa11x0_misc.c
+++ b/packages/hal/arm/sa11x0/var/current/src/sa11x0_misc.c
@@ -9,6 +9,7 @@
 // -------------------------------------------
 // This file is part of eCos, the Embedded Configurable Operating System.
 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
+// Copyright (C) 2003 Gary Thomas
 //
 // eCos is free software; you can redistribute it and/or modify it under
 // the terms of the GNU General Public License as published by the Free
@@ -207,6 +208,44 @@ void hal_delay_us(cyg_int32 usecs)
         val -= 1000000;
     }
 }
+#ifdef CYGPKG_PROFILE_GPROF
+//--------------------------------------------------------------------------
+//
+// Profiling support - uses a separate high-speed timer
+//
+
+#include <cyg/hal/hal_arch.h>
+#include <cyg/hal/hal_intr.h>
+#include <cyg/profile/profile.h>
+
+// Can't rely on Cyg_Interrupt class being defined.
+#define Cyg_InterruptHANDLED 1
+
+// Profiling timer ISR
+static cyg_uint32 
+profile_isr(CYG_ADDRWORD vector, CYG_ADDRWORD data, HAL_SavedRegisters *regs)
+{
+    HAL_INTERRUPT_ACKNOWLEDGE(CYGNUM_HAL_INTERRUPT_TIMER1);
+    __profile_hit(regs->pc);
+    return Cyg_InterruptHANDLED;
+}
+
+void
+hal_enable_profile_timer(int resolution)
+{
+    // Run periodic timer interrupt for profile 
+    // The resolution is specified in us, the hardware generates 3.6864
+    // ticks/us
+    int period = (resolution*36864) / 10000;
+
+    // Attach ISR.
+    HAL_INTERRUPT_ATTACH(CYGNUM_HAL_INTERRUPT_TIMER1, &profile_isr, 0x1111, 0);
+    HAL_INTERRUPT_UNMASK(CYGNUM_HAL_INTERRUPT_TIMER1);
+
+    // Set period.
+    *SA11X0_OSMR1 = period;
+}
+#endif
 
 // -------------------------------------------------------------------------