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arm: Add and use _ARMV7M_Exception_default()

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This commit is contained in:
Sebastian Huber
2013-01-07 15:07:42 +01:00
parent e377ad7d62
commit 04f399dc0b
4 changed files with 72 additions and 15 deletions
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c/src/lib/libbsp/arm/shared/start/start.S
+16 -15
View File
@@ -38,6 +38,7 @@
.extern _ARMV4_Exception_reserved_default
.extern _ARMV4_Exception_irq_default
.extern _ARMV4_Exception_fiq_default
.extern _ARMV7M_Exception_default
/* Global symbols */
.globl _start
@@ -218,22 +219,22 @@ bsp_start_vector_table_begin:
.word bsp_stack_main_end
.word _start /* Reset */
.word bsp_reset /* NMI */
.word bsp_reset /* Hard Fault */
.word bsp_reset /* MPU Fault */
.word bsp_reset /* Bus Fault */
.word bsp_reset /* Usage Fault */
.word bsp_reset /* Reserved */
.word bsp_reset /* Reserved */
.word bsp_reset /* Reserved */
.word bsp_reset /* Reserved */
.word bsp_reset /* SVC */
.word bsp_reset /* Debug Monitor */
.word bsp_reset /* Reserved */
.word bsp_reset /* PendSV */
.word bsp_reset /* SysTick */
.word _ARMV7M_Exception_default /* NMI */
.word _ARMV7M_Exception_default /* Hard Fault */
.word _ARMV7M_Exception_default /* MPU Fault */
.word _ARMV7M_Exception_default /* Bus Fault */
.word _ARMV7M_Exception_default /* Usage Fault */
.word _ARMV7M_Exception_default /* Reserved */
.word _ARMV7M_Exception_default /* Reserved */
.word _ARMV7M_Exception_default /* Reserved */
.word _ARMV7M_Exception_default /* Reserved */
.word _ARMV7M_Exception_default /* SVC */
.word _ARMV7M_Exception_default /* Debug Monitor */
.word _ARMV7M_Exception_default /* Reserved */
.word _ARMV7M_Exception_default /* PendSV */
.word _ARMV7M_Exception_default /* SysTick */
.rept BSP_INTERRUPT_VECTOR_MAX + 1
.word bsp_reset /* IRQ */
.word _ARMV7M_Exception_default /* IRQ */
.endr
bsp_start_vector_table_end:
cpukit/score/cpu/arm/Makefile.am
+1
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@@ -25,6 +25,7 @@ libscorecpu_a_SOURCES += armv4-exception-default.S
libscorecpu_a_SOURCES += armv7m-context-initialize.c
libscorecpu_a_SOURCES += armv7m-context-restore.c
libscorecpu_a_SOURCES += armv7m-context-switch.c
libscorecpu_a_SOURCES += armv7m-exception-default.c
libscorecpu_a_SOURCES += armv7m-exception-frame-print.c
libscorecpu_a_SOURCES += armv7m-exception-handler-get.c
libscorecpu_a_SOURCES += armv7m-exception-handler-set.c
cpukit/score/cpu/arm/armv7m-exception-default.c
+53
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@@ -0,0 +1,53 @@
/*
* Copyright (c) 2013 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Obere Lagerstr. 30
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/score/armv7m.h>
#ifdef ARM_MULTILIB_ARCH_V7M
void __attribute__((naked)) _ARMV7M_Exception_default( void )
{
__asm__ volatile (
"sub sp, %[cpufsz]\n"
"stm sp, {r0-r12}\n"
"mov r2, lr\n"
"mrs r1, msp\n"
"mrs r0, psp\n"
"cmn r2, #3\n"
"itt ne\n"
"movne r0, r1\n"
"addne r0, %[cpufsz]\n"
"add r2, r0, %[v7mlroff]\n"
"add r1, sp, %[cpulroff]\n"
"ldm r2, {r3-r5}\n"
"stm r1, {r3-r5}\n"
"mrs r1, ipsr\n"
"str r1, [sp, %[cpuvecoff]]\n"
"mov r0, sp\n"
"b _ARM_Exception_default\n"
:
: [cpufsz] "i" (sizeof(CPU_Exception_frame)),
[v7mfsz] "i" (sizeof(ARMV7M_Exception_frame)),
[cpuspoff] "J" (offsetof(CPU_Exception_frame, register_sp)),
[cpulroff] "i" (offsetof(CPU_Exception_frame, register_lr)),
[v7mlroff] "i" (offsetof(ARMV7M_Exception_frame, register_lr)),
[cpuvecoff] "J" (offsetof(CPU_Exception_frame, vector))
);
}
#endif /* ARM_MULTILIB_ARCH_V7M */
cpukit/score/cpu/arm/rtems/score/armv7m.h
+2
View File
@@ -468,6 +468,8 @@ void _ARMV7M_Set_exception_priority_and_handler(
ARMV7M_Exception_handler handler
);
void _ARMV7M_Exception_default( void );
void _ARMV7M_Interrupt_service_enter( void );
void _ARMV7M_Interrupt_service_leave( void );