Static Call Graph - [.\myapp\obj\demo.axf]

# Static Call Graph for image .\myapp\obj\demo.axf

#<CALLGRAPH># ARM Linker, 4.1 [Build 481]: Last Updated: Thu Apr 13 18:51:49 2017

### Maximum Stack Usage = 40 bytes + Unknown(Functions without stacksize, Cycles, Untraceable Function Pointers)

### Call chain for Maximum Stack Depth:

__rt_entry_main ⇒ main ⇒ UART_Open

### Functions with no stack information

- __user_initial_stackheap

### Mutually Recursive functions

- NMI_Handler ⇒ NMI_Handler
- HardFault_Handler ⇒ HardFault_Handler
- SVC_Handler ⇒ SVC_Handler
- PendSV_Handler ⇒ PendSV_Handler
- SysTick_Handler ⇒ SysTick_Handler
- ADC_IRQHandler ⇒ ADC_IRQHandler

  ### Function Pointers

  - Reset_Handler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - NMI_Handler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - HardFault_Handler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - SVC_Handler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - PendSV_Handler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - SysTick_Handler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - WAKEUP_IRQHandler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - PWM_FAULT_IRQHandler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - TWS_IRQHandler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - TIMER16_0_IRQHandler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - TIMER16_1_IRQHandler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - TIMER16_2_IRQHandler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - TIMER16_3_IRQHandler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - UART0_IRQHandler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - UART1_IRQHandler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - ADC_IRQHandler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - WDT_IRQHandler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - BOD_IRQHandler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - GPIOA_IRQHandler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - GPIOB_IRQHandler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - GPIOC_IRQHandler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - RTC_IRQHandler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - SPI_IRQHandler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - PWM_TIMER_IRQHandler from startup_hhd32f0xx_s.o(.text) referenced from startup_hhd32f0xx_s.o(RESET)
  - __main from __main.o(!!!main) referenced from startup_hhd32f0xx_s.o(.text)

  ### Global Symbols

  __main (Thumb, 8 bytes, Stack size 0 bytes, __main.o(!!!main))
  [Calls]

  - >> __scatterload
  - >> __rt_entry

  __scatterload (Thumb, 0 bytes, Stack size unknown bytes, __scatter.o(!!!scatter))
  [Called By]

  - >> __main

  __scatterload_rt2 (Thumb, 52 bytes, Stack size unknown bytes, __scatter.o(!!!scatter), UNUSED)
  [Calls]

  - >> __rt_entry

  __scatterload_rt2_thumb_only (Thumb, 0 bytes, Stack size unknown bytes, __scatter.o(!!!scatter), UNUSED)

  __scatterload_null (Thumb, 0 bytes, Stack size unknown bytes, __scatter.o(!!!scatter), UNUSED)

  __scatterload_copy (Thumb, 26 bytes, Stack size unknown bytes, __scatter_copy.o(!!handler_copy), UNUSED)
  [Calls]

  - >> __scatterload_copy
  [Called By]
  - >> __scatterload_copy

  __scatterload_zeroinit (Thumb, 28 bytes, Stack size unknown bytes, __scatter_zi.o(!!handler_zi), UNUSED)

  __rt_lib_init (Thumb, 0 bytes, Stack size unknown bytes, libinit.o(.ARM.Collect$$libinit$$00000000))
  [Called By]

  - >> __rt_entry_li

  __rt_lib_init_alloca_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000002A))

  __rt_lib_init_argv_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000028))

  __rt_lib_init_atexit_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000017))

  __rt_lib_init_clock_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000001D))

  __rt_lib_init_cpp_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000002E))

  __rt_lib_init_exceptions_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000002C))

  __rt_lib_init_fp_trap_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000001B))

  __rt_lib_init_getenv_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000001F))

  __rt_lib_init_heap_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000006))

  __rt_lib_init_lc_collate_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000000D))

  __rt_lib_init_lc_ctype_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000000F))

  __rt_lib_init_lc_monetary_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000011))

  __rt_lib_init_lc_numeric_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000013))

  __rt_lib_init_lc_time_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000015))

  __rt_lib_init_rand_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000000A))

  __rt_lib_init_return (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000002F))

  __rt_lib_init_signal_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000019))

  __rt_lib_init_stdio_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000021))

  __rt_lib_init_user_alloc_1 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$00000008))

  __rt_lib_shutdown (Thumb, 0 bytes, Stack size unknown bytes, libshutdown.o(.ARM.Collect$$libshutdown$$00000000))
  [Called By]

  - >> __rt_exit_ls

  __rt_lib_shutdown_fp_trap_1 (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000006))

  __rt_lib_shutdown_heap_1 (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$0000000E))

  __rt_lib_shutdown_return (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$0000000F))

  __rt_lib_shutdown_signal_1 (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000009))

  __rt_lib_shutdown_stdio_1 (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$00000003))

  __rt_lib_shutdown_user_alloc_1 (Thumb, 0 bytes, Stack size unknown bytes, libshutdown2.o(.ARM.Collect$$libshutdown$$0000000B))

  __rt_entry (Thumb, 0 bytes, Stack size unknown bytes, rtentry.o(.ARM.Collect$$rtentry$$00000000))
  [Called By]

  - >> __scatterload_rt2
  - >> __main

  __rt_entry_presh_1 (Thumb, 0 bytes, Stack size unknown bytes, rtentry2.o(.ARM.Collect$$rtentry$$00000002))

  __rt_entry_sh (Thumb, 0 bytes, Stack size unknown bytes, rtentry4.o(.ARM.Collect$$rtentry$$00000004))
  [Stack]

  - Max Depth = 8 + Unknown Stack Size
  - Call Chain = __rt_entry_sh ⇒ __user_setup_stackheap
  [Calls]
  - >> __user_setup_stackheap

  __rt_entry_li (Thumb, 0 bytes, Stack size unknown bytes, rtentry2.o(.ARM.Collect$$rtentry$$0000000A))
  [Calls]

  - >> __rt_lib_init

  __rt_entry_postsh_1 (Thumb, 0 bytes, Stack size unknown bytes, rtentry2.o(.ARM.Collect$$rtentry$$00000009))

  __rt_entry_main (Thumb, 0 bytes, Stack size unknown bytes, rtentry2.o(.ARM.Collect$$rtentry$$0000000D))
  [Stack]

  - Max Depth = 40 + Unknown Stack Size
  - Call Chain = __rt_entry_main ⇒ main ⇒ UART_Open
  [Calls]
  - >> exit
  - >> main

  __rt_entry_postli_1 (Thumb, 0 bytes, Stack size unknown bytes, rtentry2.o(.ARM.Collect$$rtentry$$0000000C))

  __rt_exit (Thumb, 0 bytes, Stack size unknown bytes, rtexit.o(.ARM.Collect$$rtexit$$00000000))
  [Called By]

  - >> exit

  __rt_exit_ls (Thumb, 0 bytes, Stack size unknown bytes, rtexit2.o(.ARM.Collect$$rtexit$$00000003))
  [Calls]

  - >> __rt_lib_shutdown

  __rt_exit_prels_1 (Thumb, 0 bytes, Stack size unknown bytes, rtexit2.o(.ARM.Collect$$rtexit$$00000002))

  __rt_exit_exit (Thumb, 0 bytes, Stack size unknown bytes, rtexit2.o(.ARM.Collect$$rtexit$$00000004))
  [Calls]

  - >> _sys_exit

  SystemCoreClockUpdate (Thumb, 90 bytes, Stack size 8 bytes, system_hhd32f0xx.o(.text))
  [Stack]

  - Max Depth = 8
  - Call Chain = SystemCoreClockUpdate
  [Calls]
  - >> __aeabi_uidivmod
  [Called By]
  - >> main
  - >> SYS_SetAHBClkDivider
  - >> SYS_SelectMainClkSrc

  SystemInit (Thumb, 2 bytes, Stack size 0 bytes, system_hhd32f0xx.o(.text))
  [Called By]

  - >> SYS_SystemInitial

  UART_Open (Thumb, 284 bytes, Stack size 40 bytes, hhd_uart.o(.text))
  [Stack]

  - Max Depth = 40
  - Call Chain = UART_Open
  [Calls]
  - >> __aeabi_uidivmod
  - >> NVIC_DisableIRQ
  [Called By]
  - >> main

  UART_ClearIntFlag (Thumb, 10 bytes, Stack size 0 bytes, hhd_uart.o(.text), UNUSED)
  [Called By]

  - >> UART_Close

  UART_DisableInt (Thumb, 10 bytes, Stack size 0 bytes, hhd_uart.o(.text), UNUSED)
  [Called By]

  - >> UART_Close

  UART_Close (Thumb, 74 bytes, Stack size 8 bytes, hhd_uart.o(.text), UNUSED)
  [Calls]

  - >> UART_DisableInt
  - >> UART_ClearIntFlag
  - >> NVIC_DisableIRQ

  UART_ByteRead (Thumb, 22 bytes, Stack size 0 bytes, hhd_uart.o(.text), UNUSED)

  UART_Read (Thumb, 38 bytes, Stack size 12 bytes, hhd_uart.o(.text), UNUSED)

  UART_ByteWrite (Thumb, 28 bytes, Stack size 0 bytes, hhd_uart.o(.text), UNUSED)

  UART_Write (Thumb, 48 bytes, Stack size 12 bytes, hhd_uart.o(.text), UNUSED)

  UART_Send (Thumb, 38 bytes, Stack size 12 bytes, hhd_uart.o(.text), UNUSED)

  UART_PutString (Thumb, 26 bytes, Stack size 0 bytes, hhd_uart.o(.text))
  [Called By]

  - >> main

  UART_PutHex (Thumb, 52 bytes, Stack size 0 bytes, hhd_uart.o(.text), UNUSED)

  UART_EnableInt (Thumb, 8 bytes, Stack size 0 bytes, hhd_uart.o(.text), UNUSED)

  UART_GetStatus (Thumb, 8 bytes, Stack size 0 bytes, hhd_uart.o(.text), UNUSED)

  UART_ClearFIFO (Thumb, 6 bytes, Stack size 0 bytes, hhd_uart.o(.text), UNUSED)

  SYS_SystemInitial (Thumb, 40 bytes, Stack size 8 bytes, hhd_sys.o(.text))
  [Stack]

  - Max Depth = 8
  - Call Chain = SYS_SystemInitial
  [Calls]
  - >> SystemInit
  [Called By]
  - >> main

  SYS_SelectMainClkSrc (Thumb, 80 bytes, Stack size 8 bytes, hhd_sys.o(.text), UNUSED)
  [Calls]

  - >> SystemCoreClockUpdate

  SYS_SetAHBClkDivider (Thumb, 28 bytes, Stack size 8 bytes, hhd_sys.o(.text), UNUSED)
  [Calls]

  - >> SystemCoreClockUpdate

  SYS_SelectWDTClkSrc (Thumb, 42 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_SelectClkOutSrc (Thumb, 92 bytes, Stack size 4 bytes, hhd_sys.o(.text), UNUSED)
  [Calls]

  - >> __ARM_common_switch8

  SYS_SetClkOutDivider (Thumb, 20 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_EnableClkOut (Thumb, 8 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_DisableClkOut (Thumb, 26 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_SetIOFilter (Thumb, 16 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_PowerDownAngIP (Thumb, 16 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_PowerUpAngIP (Thumb, 16 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_EnablePhrClk (Thumb, 16 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_DisablePhrClk (Thumb, 16 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_ResetPhr (Thumb, 20 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_ResetSystem (Thumb, 18 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_BODResetSystem (Thumb, 48 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_GetResetStatus (Thumb, 6 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_ClearResetStatus (Thumb, 8 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_EnterSleep (Thumb, 28 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_SetDeepSleepWakeupPin (Thumb, 44 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_ResetDeepSleepWakeupPin (Thumb, 10 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_EnterDeepSleep (Thumb, 166 bytes, Stack size 8 bytes, hhd_sys.o(.text), UNUSED)

  SYS_EnterPowerDown (Thumb, 106 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_IOConfig (Thumb, 4 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_IOSetPullup (Thumb, 20 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_IOSetPulldown (Thumb, 20 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_IOSwitchtoAng (Thumb, 12 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_IOSwitchtoDigit (Thumb, 14 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_IOEnableFilter (Thumb, 14 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  SYS_IODisableFilter (Thumb, 12 bytes, Stack size 0 bytes, hhd_sys.o(.text), UNUSED)

  Reset_Handler (Thumb, 4 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Address Reference Count : 1]

  - startup_hhd32f0xx_s.o(RESET)

  NMI_Handler (Thumb, 2 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Calls]

  - >> NMI_Handler
  [Called By]
  - >> NMI_Handler
  [Address Reference Count : 1]
  - startup_hhd32f0xx_s.o(RESET)

  HardFault_Handler (Thumb, 2 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Calls]

  - >> HardFault_Handler
  [Called By]
  - >> HardFault_Handler
  [Address Reference Count : 1]
  - startup_hhd32f0xx_s.o(RESET)

  SVC_Handler (Thumb, 2 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Calls]

  - >> SVC_Handler
  [Called By]
  - >> SVC_Handler
  [Address Reference Count : 1]
  - startup_hhd32f0xx_s.o(RESET)

  PendSV_Handler (Thumb, 2 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Calls]

  - >> PendSV_Handler
  [Called By]
  - >> PendSV_Handler
  [Address Reference Count : 1]
  - startup_hhd32f0xx_s.o(RESET)

  SysTick_Handler (Thumb, 2 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Calls]

  - >> SysTick_Handler
  [Called By]
  - >> SysTick_Handler
  [Address Reference Count : 1]
  - startup_hhd32f0xx_s.o(RESET)

  ADC_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Calls]

  - >> ADC_IRQHandler
  [Called By]
  - >> ADC_IRQHandler
  [Address Reference Count : 1]
  - startup_hhd32f0xx_s.o(RESET)

  BOD_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Address Reference Count : 1]

  - startup_hhd32f0xx_s.o(RESET)

  GPIOA_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Address Reference Count : 1]

  - startup_hhd32f0xx_s.o(RESET)

  GPIOB_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Address Reference Count : 1]

  - startup_hhd32f0xx_s.o(RESET)

  GPIOC_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Address Reference Count : 1]

  - startup_hhd32f0xx_s.o(RESET)

  PWM_FAULT_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Address Reference Count : 1]

  - startup_hhd32f0xx_s.o(RESET)

  PWM_TIMER_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Address Reference Count : 1]

  - startup_hhd32f0xx_s.o(RESET)

  RTC_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Address Reference Count : 1]

  - startup_hhd32f0xx_s.o(RESET)

  SPI_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Address Reference Count : 1]

  - startup_hhd32f0xx_s.o(RESET)

  TIMER16_0_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Address Reference Count : 1]

  - startup_hhd32f0xx_s.o(RESET)

  TIMER16_1_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Address Reference Count : 1]

  - startup_hhd32f0xx_s.o(RESET)

  TIMER16_2_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Address Reference Count : 1]

  - startup_hhd32f0xx_s.o(RESET)

  TIMER16_3_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Address Reference Count : 1]

  - startup_hhd32f0xx_s.o(RESET)

  TWS_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Address Reference Count : 1]

  - startup_hhd32f0xx_s.o(RESET)

  UART0_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Address Reference Count : 1]

  - startup_hhd32f0xx_s.o(RESET)

  UART1_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Address Reference Count : 1]

  - startup_hhd32f0xx_s.o(RESET)

  WAKEUP_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Address Reference Count : 1]

  - startup_hhd32f0xx_s.o(RESET)

  WDT_IRQHandler (Thumb, 0 bytes, Stack size 0 bytes, startup_hhd32f0xx_s.o(.text))
  [Address Reference Count : 1]

  - startup_hhd32f0xx_s.o(RESET)

  __user_initial_stackheap (Thumb, 0 bytes, Stack size unknown bytes, startup_hhd32f0xx_s.o(.text))
  [Called By]

  - >> __user_setup_stackheap

  delay_us (Thumb, 14 bytes, Stack size 0 bytes, main.o(.text))
  [Called By]

  - >> main

  main (Thumb, 106 bytes, Stack size 0 bytes, main.o(.text))
  [Stack]

  - Max Depth = 40
  - Call Chain = main ⇒ UART_Open
  [Calls]
  - >> delay_us
  - >> SYS_SystemInitial
  - >> UART_PutString
  - >> UART_Open
  - >> SystemCoreClockUpdate
  [Called By]
  - >> __rt_entry_main

  __aeabi_uidiv (Thumb, 0 bytes, Stack size 0 bytes, aeabi_sdiv.o(.text), UNUSED)

  __aeabi_uidivmod (Thumb, 20 bytes, Stack size 0 bytes, aeabi_sdiv.o(.text))
  [Called By]

  - >> UART_Open
  - >> SystemCoreClockUpdate

  __aeabi_idiv (Thumb, 0 bytes, Stack size 8 bytes, aeabi_sdiv.o(.text), UNUSED)

  __aeabi_idivmod (Thumb, 326 bytes, Stack size 8 bytes, aeabi_sdiv.o(.text), UNUSED)

  __use_two_region_memory (Thumb, 2 bytes, Stack size 0 bytes, heapauxi.o(.text), UNUSED)

  __rt_heap_escrow$2region (Thumb, 2 bytes, Stack size 0 bytes, heapauxi.o(.text), UNUSED)

  __rt_heap_expand$2region (Thumb, 2 bytes, Stack size 0 bytes, heapauxi.o(.text), UNUSED)

  __user_setup_stackheap (Thumb, 62 bytes, Stack size 8 bytes, sys_stackheap_outer.o(.text))
  [Stack]

  - Max Depth = 8 + Unknown Stack Size
  - Call Chain = __user_setup_stackheap
  [Calls]
  - >> __user_perproc_libspace
  - >> __user_initial_stackheap
  [Called By]
  - >> __rt_entry_sh

  exit (Thumb, 12 bytes, Stack size 0 bytes, exit.o(.text))
  [Calls]

  - >> __rt_exit
  - >> _call_atexit_fns (Weak Reference)
  [Called By]
  - >> __rt_entry_main

  __user_libspace (Thumb, 8 bytes, Stack size 0 bytes, libspace.o(.text), UNUSED)

  __user_perproc_libspace (Thumb, 0 bytes, Stack size 0 bytes, libspace.o(.text))
  [Called By]

  - >> __user_setup_stackheap

  __user_perthread_libspace (Thumb, 0 bytes, Stack size 0 bytes, libspace.o(.text), UNUSED)

  _sys_exit (Thumb, 8 bytes, Stack size 0 bytes, sys_exit.o(.text))
  [Called By]

  - >> __rt_exit_exit

  __I$use$semihosting (Thumb, 0 bytes, Stack size 0 bytes, use_no_semi.o(.text), UNUSED)

  __use_no_semihosting_swi (Thumb, 2 bytes, Stack size 0 bytes, use_no_semi.o(.text), UNUSED)

  __ARM_common_switch8 (Thumb, 26 bytes, Stack size 8 bytes, hhd_sys.o(i.__ARM_common_switch8), UNUSED)
  [Called By]

  - >> SYS_SelectClkOutSrc

  ### Local Symbols

  NVIC_DisableIRQ (Thumb, 14 bytes, Stack size 0 bytes, hhd_uart.o(.text))
  [Called By]

  - >> UART_Close
  - >> UART_Open

  ### Undefined Global Symbols

  _call_atexit_fns (ARM, 0 bytes, Stack size 0 bytes, UNDEFINED)
  [Called By]

  - >> exit