diff options
| author | Yuval Adam <yuv.adm@gmail.com> | 2012-10-29 21:36:23 +0200 |
|---|---|---|
| committer | Yuval Adam <yuv.adm@gmail.com> | 2012-10-29 21:36:23 +0200 |
| commit | 44b979ac3dc53b29ee8176517b7d9a10935630c0 (patch) | |
| tree | 03c256e5e19ac2be9d19b3d4638cdf233b0ee4e9 /project0/startup_sourcerygxx.S | |
| parent | 8ced6b65a22e0c392bc31288b2eb3f713a0fc477 (diff) | |
Initial code
Diffstat (limited to 'project0/startup_sourcerygxx.S')
| -rw-r--r-- | project0/startup_sourcerygxx.S | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/project0/startup_sourcerygxx.S b/project0/startup_sourcerygxx.S new file mode 100644 index 0000000..b720839 --- /dev/null +++ b/project0/startup_sourcerygxx.S @@ -0,0 +1,75 @@ +//*****************************************************************************
+//
+// startup_sourcerygxx.S - Startup code for Sourcery CodeBench.
+//
+// Copyright (c) 2012 Texas Instruments Incorporated. All rights reserved.
+// Software License Agreement
+//
+// Texas Instruments (TI) is supplying this software for use solely and
+// exclusively on TI's microcontroller products. The software is owned by
+// TI and/or its suppliers, and is protected under applicable copyright
+// laws. You may not combine this software with "viral" open-source
+// software in order to form a larger program.
+//
+// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
+// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
+// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
+// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
+// DAMAGES, FOR ANY REASON WHATSOEVER.
+//
+// This is part of revision 9453 of the EK-LM4F120XL Firmware Package.
+//
+//*****************************************************************************
+
+ .syntax unified
+ .thumb
+
+//*****************************************************************************
+//
+// Place this code into the .cs3.reset section so that it can be executed prior
+// to the startup code in Sourcery CodeBench.
+//
+//*****************************************************************************
+ .section .cs3.reset,"x"
+
+//*****************************************************************************
+//
+// The reset handler, which overrides the one provided by CS3.
+//
+//*****************************************************************************
+ .globl __cs3_reset
+ .thumb_func
+__cs3_reset:
+ //
+ // Enable the floating-point unit. This must be done here to handle the
+ // case where main() uses floating-point and the function prologue saves
+ // floating-point registers (which will fault if floating-point is not
+ // enabled). Any configuration of the floating-point unit using DriverLib
+ // APIs must be done here prior to the floating-point unit being enabled.
+ //
+ // Note that this does not use DriverLib since it might not be included in
+ // this project.
+ //
+ movw r0, #0xed88
+ movt r0, #0xe000
+ ldr r1, [r0]
+ orr r1, #0x00f00000
+ str r1, [r0]
+
+ //
+ // Branch to the normal CS3 startup code.
+ //
+ .extern __cs3_reset_ekc_lm4f232
+ ldr r0, =__cs3_reset_ekc_lm4f232
+ bx r0
+
+ //
+ // Place the literal pool here.
+ //
+ .ltorg
+
+ //
+ // The end of the file.
+ //
+ .end
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