Introduce some helper macros for exception vectors
This patch introduces some assembler macros to simplify the
declaration of the exception vectors. It abstracts the section
the exception code is put into as well as the alignments
constraints mandated by the ARMv8 architecture. For all TF images,
the exception code has been updated to make use of these macros.
This patch also updates some invalid comments in the exception
vector code.
Change-Id: I35737b8f1c8c24b6da89b0a954c8152a4096fa95
diff --git a/bl1/aarch64/bl1_exceptions.S b/bl1/aarch64/bl1_exceptions.S
index 9ff6a57..68f9b7a 100644
--- a/bl1/aarch64/bl1_exceptions.S
+++ b/bl1/aarch64/bl1_exceptions.S
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2013-2015, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
@@ -34,42 +34,37 @@
#include <bl1.h>
#include <context.h>
+/* -----------------------------------------------------------------------------
+ * Very simple stackless exception handlers used by BL1.
+ * -----------------------------------------------------------------------------
+ */
.globl bl1_exceptions
- .section .vectors, "ax"; .align 11
+vector_base bl1_exceptions
/* -----------------------------------------------------
- * Very simple stackless exception handlers used by BL1.
- * -----------------------------------------------------
- */
- .align 7
-bl1_exceptions:
- /* -----------------------------------------------------
* Current EL with SP0 : 0x0 - 0x200
* -----------------------------------------------------
*/
-SynchronousExceptionSP0:
+vector_entry SynchronousExceptionSP0
mov x0, #SYNC_EXCEPTION_SP_EL0
bl plat_report_exception
b SynchronousExceptionSP0
check_vector_size SynchronousExceptionSP0
- .align 7
-IrqSP0:
+vector_entry IrqSP0
mov x0, #IRQ_SP_EL0
bl plat_report_exception
b IrqSP0
check_vector_size IrqSP0
- .align 7
-FiqSP0:
+vector_entry FiqSP0
mov x0, #FIQ_SP_EL0
bl plat_report_exception
b FiqSP0
check_vector_size FiqSP0
- .align 7
-SErrorSP0:
+vector_entry SErrorSP0
mov x0, #SERROR_SP_EL0
bl plat_report_exception
b SErrorSP0
@@ -79,29 +74,25 @@
* Current EL with SPx: 0x200 - 0x400
* -----------------------------------------------------
*/
- .align 7
-SynchronousExceptionSPx:
+vector_entry SynchronousExceptionSPx
mov x0, #SYNC_EXCEPTION_SP_ELX
bl plat_report_exception
b SynchronousExceptionSPx
check_vector_size SynchronousExceptionSPx
- .align 7
-IrqSPx:
+vector_entry IrqSPx
mov x0, #IRQ_SP_ELX
bl plat_report_exception
b IrqSPx
check_vector_size IrqSPx
- .align 7
-FiqSPx:
+vector_entry FiqSPx
mov x0, #FIQ_SP_ELX
bl plat_report_exception
b FiqSPx
check_vector_size FiqSPx
- .align 7
-SErrorSPx:
+vector_entry SErrorSPx
mov x0, #SERROR_SP_ELX
bl plat_report_exception
b SErrorSPx
@@ -111,8 +102,7 @@
* Lower EL using AArch64 : 0x400 - 0x600
* -----------------------------------------------------
*/
- .align 7
-SynchronousExceptionA64:
+vector_entry SynchronousExceptionA64
/* Enable the SError interrupt */
msr daifclr, #DAIF_ABT_BIT
@@ -127,22 +117,19 @@
b smc_handler64
check_vector_size SynchronousExceptionA64
- .align 7
-IrqA64:
+vector_entry IrqA64
mov x0, #IRQ_AARCH64
bl plat_report_exception
b IrqA64
check_vector_size IrqA64
- .align 7
-FiqA64:
+vector_entry FiqA64
mov x0, #FIQ_AARCH64
bl plat_report_exception
b FiqA64
check_vector_size FiqA64
- .align 7
-SErrorA64:
+vector_entry SErrorA64
mov x0, #SERROR_AARCH64
bl plat_report_exception
b SErrorA64
@@ -152,29 +139,25 @@
* Lower EL using AArch32 : 0x600 - 0x800
* -----------------------------------------------------
*/
- .align 7
-SynchronousExceptionA32:
+vector_entry SynchronousExceptionA32
mov x0, #SYNC_EXCEPTION_AARCH32
bl plat_report_exception
b SynchronousExceptionA32
check_vector_size SynchronousExceptionA32
- .align 7
-IrqA32:
+vector_entry IrqA32
mov x0, #IRQ_AARCH32
bl plat_report_exception
b IrqA32
check_vector_size IrqA32
- .align 7
-FiqA32:
+vector_entry FiqA32
mov x0, #FIQ_AARCH32
bl plat_report_exception
b FiqA32
check_vector_size FiqA32
- .align 7
-SErrorA32:
+vector_entry SErrorA32
mov x0, #SERROR_AARCH32
bl plat_report_exception
b SErrorA32