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startup_rvmdk.S
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startup_rvmdk.S
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; <<< Use Configuration Wizard in Context Menu >>>
;******************************************************************************
;
; startup_rvmdk.S - Startup code for use with Keil's uVision.
;
; Copyright (c) 2011-2017 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 2.1.4.178 of the DK-TM4C123G Firmware Package.
;
;******************************************************************************
;******************************************************************************
;
; <o> Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
;
;******************************************************************************
Stack EQU 0x00000200
;******************************************************************************
;
; <o> Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
;
;******************************************************************************
Heap EQU 0x00000000
;******************************************************************************
;
; Allocate space for the stack.
;
;******************************************************************************
AREA STACK, NOINIT, READWRITE, ALIGN=3
StackMem
SPACE Stack
__initial_sp
;******************************************************************************
;
; Allocate space for the heap.
;
;******************************************************************************
AREA HEAP, NOINIT, READWRITE, ALIGN=3
__heap_base
HeapMem
SPACE Heap
__heap_limit
;******************************************************************************
;
; Indicate that the code in this file preserves 8-byte alignment of the stack.
;
;******************************************************************************
PRESERVE8
;******************************************************************************
;
; Place code into the reset code section.
;
;******************************************************************************
AREA RESET, CODE, READONLY
THUMB
;******************************************************************************
;
; External declaration for the interrupt handler used by the application.
;
;******************************************************************************
EXTERN UARTIntHandler
;******************************************************************************
;
; The vector table.
;
;******************************************************************************
EXPORT __Vectors
__Vectors
DCD StackMem + Stack ; Top of Stack
DCD Reset_Handler ; Reset Handler
DCD NmiSR ; NMI Handler
DCD FaultISR ; Hard Fault Handler
DCD IntDefaultHandler ; The MPU fault handler
DCD IntDefaultHandler ; The bus fault handler
DCD IntDefaultHandler ; The usage fault handler
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD IntDefaultHandler ; SVCall handler
DCD IntDefaultHandler ; Debug monitor handler
DCD 0 ; Reserved
DCD IntDefaultHandler ; The PendSV handler
DCD IntDefaultHandler ; The SysTick handler
DCD IntDefaultHandler ; GPIO Port A
DCD IntDefaultHandler ; GPIO Port B
DCD IntDefaultHandler ; GPIO Port C
DCD IntDefaultHandler ; GPIO Port D
DCD IntDefaultHandler ; GPIO Port E
DCD UARTIntHandler ; UART0 Rx and Tx
DCD IntDefaultHandler ; UART1 Rx and Tx
DCD IntDefaultHandler ; SSI0 Rx and Tx
DCD IntDefaultHandler ; I2C0 Master and Slave
DCD IntDefaultHandler ; PWM Fault
DCD IntDefaultHandler ; PWM Generator 0
DCD IntDefaultHandler ; PWM Generator 1
DCD IntDefaultHandler ; PWM Generator 2
DCD IntDefaultHandler ; Quadrature Encoder 0
DCD IntDefaultHandler ; ADC Sequence 0
DCD IntDefaultHandler ; ADC Sequence 1
DCD IntDefaultHandler ; ADC Sequence 2
DCD IntDefaultHandler ; ADC Sequence 3
DCD IntDefaultHandler ; Watchdog timer
DCD IntDefaultHandler ; Timer 0 subtimer A
DCD IntDefaultHandler ; Timer 0 subtimer B
DCD IntDefaultHandler ; Timer 1 subtimer A
DCD IntDefaultHandler ; Timer 1 subtimer B
DCD IntDefaultHandler ; Timer 2 subtimer A
DCD IntDefaultHandler ; Timer 2 subtimer B
DCD IntDefaultHandler ; Analog Comparator 0
DCD IntDefaultHandler ; Analog Comparator 1
DCD IntDefaultHandler ; Analog Comparator 2
DCD IntDefaultHandler ; System Control (PLL, OSC, BO)
DCD IntDefaultHandler ; FLASH Control
DCD IntDefaultHandler ; GPIO Port F
DCD IntDefaultHandler ; GPIO Port G
DCD IntDefaultHandler ; GPIO Port H
DCD IntDefaultHandler ; UART2 Rx and Tx
DCD IntDefaultHandler ; SSI1 Rx and Tx
DCD IntDefaultHandler ; Timer 3 subtimer A
DCD IntDefaultHandler ; Timer 3 subtimer B
DCD IntDefaultHandler ; I2C1 Master and Slave
DCD IntDefaultHandler ; Quadrature Encoder 1
DCD IntDefaultHandler ; CAN0
DCD IntDefaultHandler ; CAN1
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD IntDefaultHandler ; Hibernate
DCD IntDefaultHandler ; USB0
DCD IntDefaultHandler ; PWM Generator 3
DCD IntDefaultHandler ; uDMA Software Transfer
DCD IntDefaultHandler ; uDMA Error
DCD IntDefaultHandler ; ADC1 Sequence 0
DCD IntDefaultHandler ; ADC1 Sequence 1
DCD IntDefaultHandler ; ADC1 Sequence 2
DCD IntDefaultHandler ; ADC1 Sequence 3
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD IntDefaultHandler ; GPIO Port J
DCD IntDefaultHandler ; GPIO Port K
DCD IntDefaultHandler ; GPIO Port L
DCD IntDefaultHandler ; SSI2 Rx and Tx
DCD IntDefaultHandler ; SSI3 Rx and Tx
DCD IntDefaultHandler ; UART3 Rx and Tx
DCD IntDefaultHandler ; UART4 Rx and Tx
DCD IntDefaultHandler ; UART5 Rx and Tx
DCD IntDefaultHandler ; UART6 Rx and Tx
DCD IntDefaultHandler ; UART7 Rx and Tx
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD IntDefaultHandler ; I2C2 Master and Slave
DCD IntDefaultHandler ; I2C3 Master and Slave
DCD IntDefaultHandler ; Timer 4 subtimer A
DCD IntDefaultHandler ; Timer 4 subtimer B
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD IntDefaultHandler ; Timer 5 subtimer A
DCD IntDefaultHandler ; Timer 5 subtimer B
DCD IntDefaultHandler ; Wide Timer 0 subtimer A
DCD IntDefaultHandler ; Wide Timer 0 subtimer B
DCD IntDefaultHandler ; Wide Timer 1 subtimer A
DCD IntDefaultHandler ; Wide Timer 1 subtimer B
DCD IntDefaultHandler ; Wide Timer 2 subtimer A
DCD IntDefaultHandler ; Wide Timer 2 subtimer B
DCD IntDefaultHandler ; Wide Timer 3 subtimer A
DCD IntDefaultHandler ; Wide Timer 3 subtimer B
DCD IntDefaultHandler ; Wide Timer 4 subtimer A
DCD IntDefaultHandler ; Wide Timer 4 subtimer B
DCD IntDefaultHandler ; Wide Timer 5 subtimer A
DCD IntDefaultHandler ; Wide Timer 5 subtimer B
DCD IntDefaultHandler ; FPU
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD IntDefaultHandler ; I2C4 Master and Slave
DCD IntDefaultHandler ; I2C5 Master and Slave
DCD IntDefaultHandler ; GPIO Port M
DCD IntDefaultHandler ; GPIO Port N
DCD IntDefaultHandler ; Quadrature Encoder 2
DCD 0 ; Reserved
DCD 0 ; Reserved
DCD IntDefaultHandler ; GPIO Port P (Summary or P0)
DCD IntDefaultHandler ; GPIO Port P1
DCD IntDefaultHandler ; GPIO Port P2
DCD IntDefaultHandler ; GPIO Port P3
DCD IntDefaultHandler ; GPIO Port P4
DCD IntDefaultHandler ; GPIO Port P5
DCD IntDefaultHandler ; GPIO Port P6
DCD IntDefaultHandler ; GPIO Port P7
DCD IntDefaultHandler ; GPIO Port Q (Summary or Q0)
DCD IntDefaultHandler ; GPIO Port Q1
DCD IntDefaultHandler ; GPIO Port Q2
DCD IntDefaultHandler ; GPIO Port Q3
DCD IntDefaultHandler ; GPIO Port Q4
DCD IntDefaultHandler ; GPIO Port Q5
DCD IntDefaultHandler ; GPIO Port Q6
DCD IntDefaultHandler ; GPIO Port Q7
DCD IntDefaultHandler ; GPIO Port R
DCD IntDefaultHandler ; GPIO Port S
DCD IntDefaultHandler ; PWM 1 Generator 0
DCD IntDefaultHandler ; PWM 1 Generator 1
DCD IntDefaultHandler ; PWM 1 Generator 2
DCD IntDefaultHandler ; PWM 1 Generator 3
DCD IntDefaultHandler ; PWM 1 Fault
;******************************************************************************
;
; This is the code that gets called when the processor first starts execution
; following a reset event.
;
;******************************************************************************
EXPORT Reset_Handler
Reset_Handler
;
; 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]
;
; Call the C library enty point that handles startup. This will copy
; the .data section initializers from flash to SRAM and zero fill the
; .bss section.
;
IMPORT __main
B __main
;******************************************************************************
;
; This is the code that gets called when the processor receives a NMI. This
; simply enters an infinite loop, preserving the system state for examination
; by a debugger.
;
;******************************************************************************
NmiSR
B NmiSR
;******************************************************************************
;
; This is the code that gets called when the processor receives a fault
; interrupt. This simply enters an infinite loop, preserving the system state
; for examination by a debugger.
;
;******************************************************************************
FaultISR
B FaultISR
;******************************************************************************
;
; This is the code that gets called when the processor receives an unexpected
; interrupt. This simply enters an infinite loop, preserving the system state
; for examination by a debugger.
;
;******************************************************************************
IntDefaultHandler
B IntDefaultHandler
;******************************************************************************
;
; Make sure the end of this section is aligned.
;
;******************************************************************************
ALIGN
;******************************************************************************
;
; Some code in the normal code section for initializing the heap and stack.
;
;******************************************************************************
AREA |.text|, CODE, READONLY
;******************************************************************************
;
; The function expected of the C library startup code for defining the stack
; and heap memory locations. For the C library version of the startup code,
; provide this function so that the C library initialization code can find out
; the location of the stack and heap.
;
;******************************************************************************
IF :DEF: __MICROLIB
EXPORT __initial_sp
EXPORT __heap_base
EXPORT __heap_limit
ELSE
IMPORT __use_two_region_memory
EXPORT __user_initial_stackheap
__user_initial_stackheap
LDR R0, =HeapMem
LDR R1, =(StackMem + Stack)
LDR R2, =(HeapMem + Heap)
LDR R3, =StackMem
BX LR
ENDIF
;******************************************************************************
;
; Make sure the end of this section is aligned.
;
;******************************************************************************
ALIGN
;******************************************************************************
;
; Tell the assembler that we're done.
;
;******************************************************************************
END