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| author | iperry <iperry@749a229e-a60e-11de-b98f-4500b42dc123> | 2009-12-17 02:37:07 +0000 |
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| committer | iperry <iperry@749a229e-a60e-11de-b98f-4500b42dc123> | 2009-12-17 02:37:07 +0000 |
| commit | 32e57dac2e61e79b029593eb4d34d727bcc10678 (patch) | |
| tree | 98d7ff41993576bb150d13d5f63dc744f6812852 /stm32conf/lanchon-stm32/src/libcs3/generic-reset.S | |
| download | librambutan-32e57dac2e61e79b029593eb4d34d727bcc10678.tar.gz librambutan-32e57dac2e61e79b029593eb4d34d727bcc10678.zip | |
Initial commit of library code, moved from leaftest repo
git-svn-id: https://leaflabs.googlecode.com/svn/trunk/library@69 749a229e-a60e-11de-b98f-4500b42dc123
Diffstat (limited to 'stm32conf/lanchon-stm32/src/libcs3/generic-reset.S')
| -rw-r--r-- | stm32conf/lanchon-stm32/src/libcs3/generic-reset.S | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/stm32conf/lanchon-stm32/src/libcs3/generic-reset.S b/stm32conf/lanchon-stm32/src/libcs3/generic-reset.S new file mode 100644 index 0000000..d5b54ab --- /dev/null +++ b/stm32conf/lanchon-stm32/src/libcs3/generic-reset.S @@ -0,0 +1,87 @@ +/* Reset code for generic
+ *
+ * Version:Sourcery G++ 4.2-84
+ * BugURL:https://support.codesourcery.com/GNUToolchain/
+ *
+ * Copyright 2007 CodeSourcery.
+ *
+ * The authors hereby grant permission to use, copy, modify, distribute,
+ * and license this software and its documentation for any purpose, provided
+ * that existing copyright notices are retained in all copies and that this
+ * notice is included verbatim in any distributions. No written agreement,
+ * license, or royalty fee is required for any of the authorized uses.
+ * Modifications to this software may be copyrighted by their authors
+ * and need not follow the licensing terms described here, provided that
+ * the new terms are clearly indicated on the first page of each file where
+ * they apply. */
+
+#if defined(__thumb2__) || defined(__ARM_ARCH_6M__)
+#define THUMB 1
+ .thumb
+ .thumb_func
+#else
+ .arm
+#endif
+ .section .cs3.reset,"x",%progbits
+ .globl __cs3_reset_generic
+ .type __cs3_reset_generic, %function
+__cs3_reset_generic:
+ .fnstart
+#include <rdi-io.h>
+
+ adr r1, __cs3_heap_start_ptr
+ mov r0,#AngelSWI_Reason_HeapInfo
+#if THUMB
+ bkpt 0xAB
+#else
+ swi 0x123456
+#endif
+ cmp r0,#0
+ blt 2f
+/* __cs3_heap_start contains
+ [0] ?
+ [4] zero or heap limit
+ [8] zero or top of stack
+ [12] ? */
+ ldr r2, __cs3_heap_start_ptr
+
+#if THUMB
+ ldr r1,=__cs3_stack
+ mov sp,r1
+#else
+ ldr sp,=__cs3_stack
+#endif
+ ldr r0,[r2,#8] /* top of stack */
+ cmp r0, #0
+#if THUMB
+ beq 1f
+ mov sp,r0
+1:
+#else
+ movne sp,r0
+#endif
+ ldr r1,=__cs3_heap_limit
+ ldr r0,[r2,#4] /* heap limit */
+ cmp r0,#0
+#if THUMB
+ beq 1f
+ str r0,[r1]
+1:
+#else
+ strne r0,[r1]
+#endif
+ .word __cs3_heap_start
+2:
+#if THUMB
+ ldr r0,=__cs3_start_c
+ bx r0
+#else
+ b __cs3_start_c
+#endif
+ .pool
+ .cantunwind
+ .fnend
+ .align 2
+__cs3_heap_start_ptr:
+ .word __cs3_heap_start
+ .size __cs3_reset_generic,.-__cs3_reset_generic
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