Diff: targets/TARGET_NXP/TARGET_LPC81X/device/TOOLCHAIN_GCC_ARM/startup_LPC81X.S

Revision:

149:156823d33999

Parent:

144:ef7eb2e8f9f7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_NXP/TARGET_LPC81X/device/TOOLCHAIN_GCC_ARM/startup_LPC81X.S	Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,219 @@
+/* File: startup_ARMCM0.S
+ * Purpose: startup file for Cortex-M0 devices. Should use with
+ *   GCC for ARM Embedded Processors
+ * Version: V1.2
+ * Date: 15 Nov 2011
+ *
+ * Copyright (c) 2011, ARM Limited
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the ARM Limited nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL ARM LIMITED BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+    .syntax unified
+    .arch armv6-m
+
+/* Memory Model
+   The HEAP starts at the end of the DATA section and grows upward.
+
+   The STACK starts at the end of the RAM and grows downward.
+
+   The HEAP and stack STACK are only checked at compile time:
+   (DATA_SIZE + HEAP_SIZE + STACK_SIZE) < RAM_SIZE
+
+   This is just a check for the bare minimum for the Heap+Stack area before
+   aborting compilation, it is not the run time limit:
+   Heap_Size + Stack_Size = 0x80 + 0x80 = 0x100
+ */
+    .section .stack
+    .align 3
+#ifdef __STACK_SIZE
+    .equ    Stack_Size, __STACK_SIZE
+#else
+    .equ    Stack_Size, 0x80
+#endif
+    .globl    __StackTop
+    .globl    __StackLimit
+__StackLimit:
+    .space    Stack_Size
+    .size __StackLimit, . - __StackLimit
+__StackTop:
+    .size __StackTop, . - __StackTop
+
+    .section .heap
+    .align 3
+#ifdef __HEAP_SIZE
+    .equ    Heap_Size, __HEAP_SIZE
+#else
+    .equ    Heap_Size, 0x80
+#endif
+    .globl    __HeapBase
+    .globl    __HeapLimit
+__HeapBase:
+    .space    Heap_Size
+    .size __HeapBase, . - __HeapBase
+__HeapLimit:
+    .size __HeapLimit, . - __HeapLimit
+
+    .section .isr_vector
+    .align 2
+    .globl __isr_vector
+__isr_vector:
+    .long    __StackTop            /* Top of Stack */
+    .long    Reset_Handler         /* Reset Handler */
+    .long    NMI_Handler           /* NMI Handler */
+    .long    HardFault_Handler     /* Hard Fault Handler */
+    .long    0                     /* Reserved */
+    .long    0                     /* Reserved */
+    .long    0                     /* Reserved */
+    .long    0                     /* Reserved */
+    .long    0                     /* Reserved */
+    .long    0                     /* Reserved */
+    .long    0                     /* Reserved */
+    .long    SVC_Handler           /* SVCall Handler */
+    .long    0                     /* Reserved */
+    .long    0                     /* Reserved */
+    .long    PendSV_Handler        /* PendSV Handler */
+    .long    SysTick_Handler       /* SysTick Handler */
+
+/* LPC810 interrupts */
+    .long    SPI0_IRQHandler                         // SPI0 controller
+    .long    SPI1_IRQHandler                         // SPI1 controller
+    .long    0                                       // Reserved
+    .long    UART0_IRQHandler                        // UART0
+    .long    UART1_IRQHandler                        // UART1
+    .long    UART2_IRQHandler                        // UART2
+    .long    0                                       // Reserved
+    .long    0                                       // Reserved
+    .long    I2C_IRQHandler                          // I2C controller
+    .long    SCT_IRQHandler                          // Smart Counter Timer
+    .long    MRT_IRQHandler                          // Multi-Rate Timer
+    .long    CMP_IRQHandler                          // Comparator
+    .long    WDT_IRQHandler                          // PIO1 (0:11)
+    .long    BOD_IRQHandler                          // Brown Out Detect
+    .long    0                                       // Reserved
+    .long    WKT_IRQHandler                          // Wakeup timer
+    .long    0                                       // Reserved
+    .long    0                                       // Reserved
+    .long    0                                       // Reserved
+    .long    0                                       // Reserved
+    .long    0                                       // Reserved
+    .long    0                                       // Reserved
+    .long    0                                       // Reserved
+    .long    0                                       // Reserved
+    .long    PININT0_IRQHandler                      // PIO INT0
+    .long    PININT1_IRQHandler                      // PIO INT1
+    .long    PININT2_IRQHandler                      // PIO INT2
+    .long    PININT3_IRQHandler                      // PIO INT3
+    .long    PININT4_IRQHandler                      // PIO INT4
+    .long    PININT5_IRQHandler                      // PIO INT5
+    .long    PININT6_IRQHandler                      // PIO INT6
+    .long    PININT7_IRQHandler                      // PIO INT7
+
+    .size    __isr_vector, . - __isr_vector
+
+    .section .text.Reset_Handler
+    .thumb
+    .thumb_func
+    .align 2
+    .globl    Reset_Handler
+    .type    Reset_Handler, %function
+Reset_Handler:
+/*     Loop to copy data from read only memory to RAM. The ranges
+ *      of copy from/to are specified by following symbols evaluated in
+ *      linker script.
+ *      __etext: End of code section, i.e., begin of data sections to copy from.
+ *      __data_start__/__data_end__: RAM address range that data should be
+ *      copied to. Both must be aligned to 4 bytes boundary.  */
+
+    ldr    r1, =__etext
+    ldr    r2, =__data_start__
+    ldr    r3, =__data_end__
+
+    subs    r3, r2
+    ble    .Lflash_to_ram_loop_end
+
+    movs    r4, 0
+.Lflash_to_ram_loop:
+    ldr    r0, [r1,r4]
+    str    r0, [r2,r4]
+    adds    r4, 4
+    cmp    r4, r3
+    blt    .Lflash_to_ram_loop
+.Lflash_to_ram_loop_end:
+
+    ldr    r0, =SystemInit
+    blx    r0
+    ldr    r0, =_start
+    bx    r0
+    .pool
+    .size Reset_Handler, . - Reset_Handler
+
+    .text
+/*    Macro to define default handlers. Default handler
+ *    will be weak symbol and just dead loops. They can be
+ *    overwritten by other handlers */
+    .macro    def_default_handler    handler_name
+    .align 1
+    .thumb_func
+    .weak    \handler_name
+    .type    \handler_name, %function
+\handler_name :
+    b    .
+    .size    \handler_name, . - \handler_name
+    .endm
+
+    def_default_handler     NMI_Handler
+    def_default_handler     HardFault_Handler
+    def_default_handler     SVC_Handler
+    def_default_handler     PendSV_Handler
+    def_default_handler     SysTick_Handler
+    def_default_handler     Default_Handler
+
+    .macro    def_irq_default_handler    handler_name
+    .weak     \handler_name
+    .set      \handler_name, Default_Handler
+    .endm
+
+    def_irq_default_handler    SPI0_IRQHandler
+    def_irq_default_handler    SPI1_IRQHandler
+    def_irq_default_handler    UART0_IRQHandler
+    def_irq_default_handler    UART1_IRQHandler
+    def_irq_default_handler    UART2_IRQHandler
+    def_irq_default_handler    I2C_IRQHandler
+    def_irq_default_handler    SCT_IRQHandler
+    def_irq_default_handler    MRT_IRQHandler
+    def_irq_default_handler    CMP_IRQHandler
+    def_irq_default_handler    WDT_IRQHandler
+    def_irq_default_handler    BOD_IRQHandler
+    def_irq_default_handler    WKT_IRQHandler
+    def_irq_default_handler    PININT0_IRQHandler
+    def_irq_default_handler    PININT1_IRQHandler
+    def_irq_default_handler    PININT2_IRQHandler
+    def_irq_default_handler    PININT3_IRQHandler
+    def_irq_default_handler    PININT4_IRQHandler
+    def_irq_default_handler    PININT5_IRQHandler
+    def_irq_default_handler    PININT6_IRQHandler
+    def_irq_default_handler    PININT7_IRQHandler
+
+    .end
+