From: batt <batt@38d2e660-2303-0410-9eaa-f027e97ec537>
Date: Wed, 31 Mar 2010 12:24:14 +0000 (+0000)
Subject: ARM7TDMI:add some doc; move exceptions to .vectors section.
X-Git-Tag: 2.5.0~560
X-Git-Url: https://codewiz.org/gitweb?a=commitdiff_plain;h=064523f78192c9ae2f76b77bfeffd3d4e640e9a7;p=bertos.git

ARM7TDMI:add some doc; move exceptions to .vectors section.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@3348 38d2e660-2303-0410-9eaa-f027e97ec537
---

diff --git a/bertos/cpu/arm/hw/crt_arm7tdmi.S b/bertos/cpu/arm/hw/crt_arm7tdmi.S
index 4c81101d..d06b9a07 100644
--- a/bertos/cpu/arm/hw/crt_arm7tdmi.S
+++ b/bertos/cpu/arm/hw/crt_arm7tdmi.S
@@ -121,32 +121,72 @@ end:
 __dummy_init:
 	mov	pc, lr
 
-__xcpt_dummy_undef:
-        b       __xcpt_dummy_undef
-
-__xcpt_dummy_swi:
-        b       __xcpt_dummy_swi
-
-__xcpt_dummy_pref:
-        b       __xcpt_dummy_pref
-
-__xcpt_dummy_dab:
-        b       __xcpt_dummy_dab
+	/*
+	 * Redefine your own __init() in order to supply
+	 * a completely custom initialization routine.
+	 */
+        .weak   __init
+        .set    __init, __init0
 
+	/*
+	 * Redefine your own __init1() in order to supply
+	 * an hardware initialization routine.
+	 * Remember that __init1() is called *before*
+	 * clearing .bss and loading .data sections.
+	 */
         .weak   __init1
         .set    __init1, __dummy_init
+
+	/*
+	 * Redefine your own __init2() in order to supply
+	 * an hardware initialization routine.
+	 * Remember that __init2() is called *after*
+	 * clearing .bss and loading .data sections, just
+	 * before calling main().
+	 */
         .weak   __init2
         .set    __init2, __dummy_init
 
-        .weak   __init
-        .set    __init, __init0
+	/*
+	 * Redefine your own __undef() in order to supply
+	 * a custom handler for undefined instruction exception.
+	 */
         .weak   __undef
         .set    __undef, __xcpt_dummy_undef
+
+	/*
+	 * Redefine your own __swi() in order to supply
+	 * a custom handler for software interrupt exception.
+	 */
         .weak   __swi
         .set    __swi, __xcpt_dummy_swi
+
+	/*
+	 * Redefine your own __prefetch_abort() in order to supply
+	 * a custom handler for prefetch abort exception.
+	 */
         .weak   __prefetch_abort
         .set    __prefetch_abort, __xcpt_dummy_pref
+
+	/*
+	 * Redefine your own __data_abort() in order to supply
+	 * a custom handler for data abort exception.
+	 */
         .weak   __data_abort
         .set    __data_abort, __xcpt_dummy_dab
 
         .ltorg
+
+	.section .vectors, "ax", %progbits
+
+__xcpt_dummy_undef:
+        b       __xcpt_dummy_undef
+
+__xcpt_dummy_swi:
+        b       __xcpt_dummy_swi
+
+__xcpt_dummy_pref:
+        b       __xcpt_dummy_pref
+
+__xcpt_dummy_dab:
+        b       __xcpt_dummy_dab