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Merge pull request #206 from azure-rtos/JideshMSFT-fix-cortex_m4-example_build
Delete cortexm_crt0.s and tx_simulator_startup.s which were removed from the latest release
This commit is contained in:
Scott Larson
@@ -1,127 +0,0 @@
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.global _start
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.extern main
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.section .init, "ax"
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.code 16
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.align 2
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.thumb_func
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_start:
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CPSID i
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ldr r1, =__stack_end__
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mov sp, r1
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/* Copy initialised sections into RAM if required. */
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ldr r0, =__data_load_start__
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ldr r1, =__data_start__
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ldr r2, =__data_end__
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bl crt0_memory_copy
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ldr r0, =__text_load_start__
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ldr r1, =__text_start__
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ldr r2, =__text_end__
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bl crt0_memory_copy
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ldr r0, =__fast_load_start__
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ldr r1, =__fast_start__
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ldr r2, =__fast_end__
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bl crt0_memory_copy
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ldr r0, =__ctors_load_start__
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ldr r1, =__ctors_start__
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ldr r2, =__ctors_end__
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bl crt0_memory_copy
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ldr r0, =__dtors_load_start__
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ldr r1, =__dtors_start__
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ldr r2, =__dtors_end__
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bl crt0_memory_copy
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ldr r0, =__rodata_load_start__
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ldr r1, =__rodata_start__
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ldr r2, =__rodata_end__
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bl crt0_memory_copy
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/* Zero bss. */
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ldr r0, =__bss_start__
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ldr r1, =__bss_end__
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mov r2, #0
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bl crt0_memory_set
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/* Setup heap - not recommended for Threadx but here for compatibility reasons */
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ldr r0, = __heap_start__
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ldr r1, = __heap_end__
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sub r1, r1, r0
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mov r2, #0
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str r2, [r0]
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add r0, r0, #4
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str r1, [r0]
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/* constructors in case of using C++ */
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ldr r0, =__ctors_start__
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ldr r1, =__ctors_end__
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crt0_ctor_loop:
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cmp r0, r1
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beq crt0_ctor_end
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ldr r2, [r0]
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add r0, #4
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push {r0-r1}
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blx r2
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pop {r0-r1}
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b crt0_ctor_loop
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crt0_ctor_end:
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/* Setup call frame for main() */
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mov r0, #0
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mov lr, r0
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mov r12, sp
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start:
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/* Jump to main() */
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mov r0, #0
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mov r1, #0
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ldr r2, =main
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blx r2
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/* when main returns, loop forever. */
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crt0_exit_loop:
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b crt0_exit_loop
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/* Startup helper functions. */
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crt0_memory_copy:
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cmp r0, r1
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beq memory_copy_done
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sub r2, r2, r1
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beq memory_copy_done
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memory_copy_loop:
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ldrb r3, [r0]
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add r0, r0, #1
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strb r3, [r1]
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add r1, r1, #1
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sub r2, r2, #1
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bne memory_copy_loop
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memory_copy_done:
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bx lr
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crt0_memory_set:
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cmp r0, r1
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beq memory_set_done
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strb r2, [r0]
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add r0, r0, #1
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b crt0_memory_set
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memory_set_done:
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bx lr
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/* Setup attibutes of stack and heap sections so they don't take up room in the elf file */
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.section .stack, "wa", %nobits
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.section .stack_process, "wa", %nobits
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.section .heap, "wa", %nobits
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@@ -1,73 +0,0 @@
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.syntax unified
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.section .vectors, "ax"
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.code 16
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.align 0
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.global _vectors
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_vectors:
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.word __stack_end__
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.word reset_handler
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.word __tx_NMIHandler
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.word __tx_HardfaultHandler
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.word MemManage_Handler
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.word BusFault_Handler
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.word UsageFault_Handler
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.word 0 // Reserved
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.word 0 // Reserved
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.word 0 // Reserved
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.word 0 // Reserved
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.word __tx_SVCallHandler //_SVC_Handler - used by Threadx scheduler //
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.word __tx_DBGHandler
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.word 0 // Reserved
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.word __tx_PendSVHandler
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.word __tx_SysTickHandler // Used by Threadx timer functionality
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.word __tx_BadHandler // Populate with user Interrupt handler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.word __tx_BadHandler
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.section .init, "ax"
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.global reset_handler
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.thumb_func
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reset_handler:
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// low level hardware config, such as PLL setup goes here
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b _start
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