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2010-06-28 Joel Sherrill <joel.sherrill@oarcorp.com>

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PR 1573/cpukit
	* mpc5xx/irq/irq.c, mpc5xx/irq/irq_asm.S,
	new-exceptions/bspsupport/ppc_exc.S,
	new-exceptions/bspsupport/ppc_exc_asm_macros.h,
	new-exceptions/bspsupport/ppc_exc_hdl.c: Add a per cpu data structure
	which contains the information required by RTEMS for each CPU core.
	This encapsulates information such as thread executing, heir, idle
	and dispatch needed.
This commit is contained in:
Joel Sherrill
2010-06-29 00:39:39 +00:00
parent da4d03d084
commit 5048a0a0b8
6 changed files with 32 additions and 57 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
c/src/lib/libcpu/powerpc/ChangeLog
View File

@@ -1,3 +1,14 @@
2010-06-28 Joel Sherrill <joel.sherrill@oarcorp.com>
PR 1573/cpukit
* mpc5xx/irq/irq.c, mpc5xx/irq/irq_asm.S,
new-exceptions/bspsupport/ppc_exc.S,
new-exceptions/bspsupport/ppc_exc_asm_macros.h,
new-exceptions/bspsupport/ppc_exc_hdl.c: Add a per cpu data structure
which contains the information required by RTEMS for each CPU core.
This encapsulates information such as thread executing, heir, idle
and dispatch needed.
2010-06-14 Joel Sherrill <joel.sherrilL@OARcorp.com>
* Makefile.am: Formatting.

19
c/src/lib/libcpu/powerpc/mpc5xx/irq/irq.c
View File

@@ -482,22 +482,3 @@ void C_dispatch_irq_handler (CPU_Interrupt_frame *frame, unsigned int excNum)
usiu.simask = ppc_cached_irq_mask;
}
}
void _ThreadProcessSignalsFromIrq (CPU_Exception_frame* ctx)
{
/*
* Process pending signals that have not already been
* processed by _Thread_Displatch. This happens quite
* unfrequently : the ISR must have posted an action
* to the current running thread.
*/
if ( _Thread_Do_post_task_switch_extension ||
_Thread_Executing->do_post_task_switch_extension ) {
_Thread_Executing->do_post_task_switch_extension = false;
_API_extensions_Run_postswitch();
}
/*
* I plan to process other thread related events here.
* This will include DEBUG session requested from keyboard...
*/
}

32
c/src/lib/libcpu/powerpc/mpc5xx/irq/irq_asm.S
View File

@@ -26,6 +26,7 @@
#include <rtems/asm.h>
#include <rtems/score/cpu.h>
#include <rtems/score/percpu.h>
#include <libcpu/vectors.h>
#include <libcpu/raw_exception.h>
@@ -118,8 +119,8 @@ SYM (dispatch_irq_handler):
/*
* Retrieve current nesting level from _ISR_Nest_level
*/
lis r7, _ISR_Nest_level@ha
lwz r3, _ISR_Nest_level@l(r7)
lis r7, ISR_NEST_LEVEL@ha
lwz r3, ISR_NEST_LEVEL@l(r7)
/*
* Check if stack switch is necessary
@@ -141,7 +142,7 @@ nested:
lwz r6, _Thread_Dispatch_disable_level@l(r15)
/* store new nesting level in _ISR_Nest_level */
stw r3, _ISR_Nest_level@l(r7)
stw r3, ISR_NEST_LEVEL@l(r7)
addi r6, r6, 1
@@ -170,8 +171,8 @@ nested:
* value as an easy exit condition because if interrupt nesting level > 1
* then _Thread_Dispatch_disable_level > 1
*/
lis r7, _ISR_Nest_level@ha
lwz r4, _ISR_Nest_level@l(r7)
lis r7, ISR_NEST_LEVEL@ha
lwz r4, ISR_NEST_LEVEL@l(r7)
/*
* start decrementing _Thread_Dispatch_disable_level
@@ -181,7 +182,7 @@ nested:
addi r4, r4, -1 /* Continue decrementing nesting level */
addi r3, r3, -1 /* Continue decrementing _Thread_Dispatch_disable_level */
stw r4, _ISR_Nest_level@l(r7) /* End decrementing nesting level */
stw r4, ISR_NEST_LEVEL@l(r7) /* End decrementing nesting level */
stw r3,_Thread_Dispatch_disable_level@l(r15) /* End decrementing _Thread_Dispatch_disable_level */
cmpwi r3, 0
@@ -199,21 +200,13 @@ nested:
* Interrupt are still disabled. Time to check if scheduler request to
* do something with the current thread...
*/
addis r4, 0, _Context_Switch_necessary@ha
lbz r5, _Context_Switch_necessary@l(r4)
addis r4, 0, DISPATCH_NEEDED@ha
lbz r5, DISPATCH_NEEDED@l(r4)
cmpwi r5, 0
bne switch
addis r6, 0, _ISR_Signals_to_thread_executing@ha
lbz r7, _ISR_Signals_to_thread_executing@l(r6)
cmpwi r7, 0
li r8, 0
beq easy_exit
stb r8, _ISR_Signals_to_thread_executing@l(r6)
/*
* going to call _ThreadProcessSignalsFromIrq
* going to call _Thread_Dispatch
* Push a complete exception like frame...
*/
stmw r16, GPR16_OFFSET(r1)
@@ -232,7 +225,7 @@ nested:
/*
* Call High Level signal handling code
*/
bl _ThreadProcessSignalsFromIrq
bl _Thread_Dispatch
/*
* start restoring exception like frame
@@ -272,9 +265,6 @@ nested:
rfi
switch:
bl SYM (_Thread_Dispatch)
easy_exit:
/*
* start restoring interrupt frame

4
c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc.S
View File

@@ -13,6 +13,10 @@
*/
/* Load macro definitions */
#include <rtems/asm.h>
#include <rtems/system.h>
#include <rtems/score/percpu.h>
#include "ppc_exc_asm_macros.h"
/******************************************************/

10
c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_asm_macros.h
View File

@@ -422,11 +422,12 @@ wrap_no_save_frame_register_\_FLVR:
*/
/* Increment ISR nest level and thread dispatch disable level */
lwz SCRATCH_REGISTER_0, _ISR_Nest_level@sdarel(r13)
lis SCRATCH_REGISTER_2, ISR_NEST_LEVEL@ha
lwz SCRATCH_REGISTER_0, ISR_NEST_LEVEL@l(SCRATCH_REGISTER_2)
lwz SCRATCH_REGISTER_1, _Thread_Dispatch_disable_level@sdarel(r13)
addi SCRATCH_REGISTER_0, SCRATCH_REGISTER_0, 1
addi SCRATCH_REGISTER_1, SCRATCH_REGISTER_1, 1
stw SCRATCH_REGISTER_0, _ISR_Nest_level@sdarel(r13)
stw SCRATCH_REGISTER_0, ISR_NEST_LEVEL@l(SCRATCH_REGISTER_2)
stw SCRATCH_REGISTER_1, _Thread_Dispatch_disable_level@sdarel(r13)
/*
@@ -612,11 +613,12 @@ wrap_handler_done_\_FLVR:
*/
/* Decrement ISR nest level and thread dispatch disable level */
lwz SCRATCH_REGISTER_0, _ISR_Nest_level@sdarel(r13)
lis SCRATCH_REGISTER_2, ISR_NEST_LEVEL@ha
lwz SCRATCH_REGISTER_0, ISR_NEST_LEVEL@l(SCRATCH_REGISTER_2)
lwz SCRATCH_REGISTER_1, _Thread_Dispatch_disable_level@sdarel(r13)
subi SCRATCH_REGISTER_0, SCRATCH_REGISTER_0, 1
subic. SCRATCH_REGISTER_1, SCRATCH_REGISTER_1, 1
stw SCRATCH_REGISTER_0, _ISR_Nest_level@sdarel(r13)
stw SCRATCH_REGISTER_0, ISR_NEST_LEVEL@l(SCRATCH_REGISTER_2)
stw SCRATCH_REGISTER_1, _Thread_Dispatch_disable_level@sdarel(r13)
/* Branch to skip thread dispatching */

13
c/src/lib/libcpu/powerpc/new-exceptions/bspsupport/ppc_exc_hdl.c
View File

@@ -86,18 +86,5 @@ void ppc_exc_wrapup(BSP_Exception_frame *frame)
* interrupts around the execution of _Thread_Dispatch();
*/
_Thread_Dispatch();
} else if ( _ISR_Signals_to_thread_executing ) {
_ISR_Signals_to_thread_executing = 0;
/*
* Process pending signals that have not already been
* processed by _Thread_Dispatch. This happens quite
* unfrequently : the ISR must have posted an action
* to the current running thread.
*/
if ( _Thread_Do_post_task_switch_extension ||
_Thread_Executing->do_post_task_switch_extension ) {
_Thread_Executing->do_post_task_switch_extension = false;
_API_extensions_Run_postswitch();
}
}
}