# Static Call Graph for image .\Objects\GSM.axf

#<CALLGRAPH># ARM Linker, RVCT4.0 [Build 524]: Last Updated: Fri Dec 02 13:07:28 2022

### Maximum Stack Usage = 168 bytes + Unknown(Functions without stacksize, Cycles, Untraceable Function Pointers)

### Call chain for Maximum Stack Depth:

main ⇒ GSM_Msg_Delete ⇒ __2sprintf ⇒ _printf_char_common ⇒ __printf

### Functions with no stack information

- Reset_Handler
- __user_initial_stackheap
- Undef_Handler
- SWI_Handler
- PAbt_Handler
- DAbt_Handler
- IRQ_Handler
- FIQ_Handler

### Mutually Recursive functions

- Undef_Handler ⇒ Undef_Handler
- SWI_Handler ⇒ SWI_Handler
- PAbt_Handler ⇒ PAbt_Handler
- DAbt_Handler ⇒ DAbt_Handler
- IRQ_Handler ⇒ IRQ_Handler
- FIQ_Handler ⇒ FIQ_Handler

  ### Function Pointers

  - Reset_Handler
  - Undef_Handler
  - SWI_Handler
  - PAbt_Handler
  - DAbt_Handler
  - IRQ_Handler
  - FIQ_Handler
  - __main
  - main
  - _sputc
  - _printf_input_char
  - _get_lc_ctype
  - __I$use$semihosting
  - UART0_Interrupt

  ### Global Symbols

  Reset_Handler (ARM, 0 bytes, Stack size unknown bytes, startup.o(RESET))
  [Address Reference Count : 1]

  - startup.o(RESET)

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

  - >> __scatterload
  - >> __rt_entry

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

  - >> __main

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

  - >> __rt_entry

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

  __scatterload_copy (ARM, 40 bytes, Stack size unknown bytes, __scatter_copy.o(!!handler_copy), UNUSED)
  [Calls]

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

  __scatterload_zeroinit (ARM, 44 bytes, Stack size unknown bytes, __scatter_zi.o(!!handler_zi), UNUSED)

  _printf_d (ARM, 0 bytes, Stack size unknown bytes, _printf_d.o(.ARM.Collect$$_printf_percent$$00000009))
  [Stack]

  - Max Depth = 72 + Unknown Stack Size
  - Call Chain = _printf_d ⇒ _printf_int_dec ⇒ _printf_int_common
  [Calls]
  - >> _printf_int_dec (via Veneer)

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

  - >> __printf (via Veneer)

  _printf_s (ARM, 0 bytes, Stack size unknown bytes, _printf_s.o(.ARM.Collect$$_printf_percent$$00000014))
  [Stack]

  - Max Depth = 24 + Unknown Stack Size
  - Call Chain = _printf_s ⇒ _printf_string ⇒ _printf_cs_common ⇒ _printf_str
  [Calls]
  - >> _printf_string (via Veneer)

  _printf_percent_end (ARM, 0 bytes, Stack size unknown bytes, _printf_percent_end.o(.ARM.Collect$$_printf_percent$$00000017))

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

  - >> _fp_init (via Veneer)
  [Called By]
  - >> __rt_entry_li (via Veneer)

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

  __rt_lib_init_lc_common (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000000B))
  [Calls]

  - >> __rt_locale (via Veneer)

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

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

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

  __rt_lib_init_lc_ctype_2 (Thumb, 0 bytes, Stack size unknown bytes, libinit2.o(.ARM.Collect$$libinit$$0000000E))
  [Stack]

  - Max Depth = 12 + Unknown Stack Size
  - Call Chain = __rt_lib_init_lc_ctype_2 ⇒ _get_lc_ctype ⇒ strcmp
  [Calls]
  - >> _get_lc_ctype (via Veneer)

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

  - >> __rt_exit_ls (via Veneer)

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

  - >> __scatterload_rt2
  - >> __main

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

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

  - >> __rt_lib_init (via Veneer)

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

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

  - >> exit (via BX)

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

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

  - >> exit (via Veneer)

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

  - >> __rt_lib_shutdown (via Veneer)

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

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

  - >> _sys_exit

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

  - >> __user_setup_stackheap

  __2sprintf (Thumb, 36 bytes, Stack size 32 bytes, noretval__2sprintf.o(.text))
  [Stack]

  - Max Depth = 128 + Unknown Stack Size
  - Call Chain = __2sprintf ⇒ _printf_char_common ⇒ __printf
  [Calls]
  - >> _sputc
  - >> _printf_char_common
  [Called By]
  - >> GSM_Msg_Read (via Veneer)
  - >> GSM_Msg_Delete (via Veneer)
  - >> GSM_Calling (via Veneer)

  __printf (Thumb, 120 bytes, Stack size 24 bytes, __printf.o(.text))
  [Stack]

  - Max Depth = 24 + Unknown Stack Size
  - Call Chain = __printf
  [Calls]
  - >> _printf_percent (via Veneer)
  - >> __ARM_common_call_via_r2
  - >> __ARM_common_call_via_r1
  [Called By]
  - >> _printf_char_common

  _printf_str (Thumb, 88 bytes, Stack size 16 bytes, _printf_str.o(.text))
  [Stack]

  - Max Depth = 16
  - Call Chain = _printf_str
  [Calls]
  - >> _printf_pre_padding (Weak Reference)
  - >> _printf_post_padding (Weak Reference)
  - >> __ARM_common_call_via_r2
  [Called By]
  - >> _printf_cs_common

  _printf_int_dec (Thumb, 94 bytes, Stack size 32 bytes, _printf_dec.o(.text))
  [Stack]

  - Max Depth = 72
  - Call Chain = _printf_int_dec ⇒ _printf_int_common
  [Calls]
  - >> __rt_udiv10 (via Veneer)
  - >> _printf_int_common
  - >> _printf_truncate_unsigned (Weak Reference)
  - >> _printf_truncate_signed (Weak Reference)
  [Called By]
  - >> _printf_d (via Veneer)

  atoi (Thumb, 30 bytes, Stack size 16 bytes, atoi.o(.text))
  [Stack]

  - Max Depth = 88
  - Call Chain = atoi ⇒ strtol ⇒ _strtoul
  [Calls]
  - >> strtol
  - >> __aeabi_errno_addr (via Veneer)
  [Called By]
  - >> GSM_Wait_for_Msg (via Veneer)

  strstr (Thumb, 42 bytes, Stack size 8 bytes, strstr.o(.text))
  [Stack]

  - Max Depth = 8
  - Call Chain = strstr
  [Called By]
  - >> main (via Veneer)
  - >> GSM_Wait_for_Msg (via Veneer)
  - >> GSM_Msg_Display (via Veneer)
  - >> GSM_Begin (via Veneer)

  strncmp (Thumb, 146 bytes, Stack size 16 bytes, strncmp.o(.text))
  [Stack]

  - Max Depth = 16
  - Call Chain = strncmp
  [Called By]
  - >> GSM_Response (via Veneer)

  strlen (Thumb, 64 bytes, Stack size 8 bytes, strlen.o(.text))
  [Stack]

  - Max Depth = 8
  - Call Chain = strlen
  [Called By]
  - >> GSM_Wait_for_Msg (via Veneer)
  - >> GSM_Response_Display (via Veneer)
  - >> GSM_Response (via Veneer)
  - >> GSM_Msg_Display (via Veneer)

  __aeabi_memmove (ARM, 0 bytes, Stack size 0 bytes, rt_memmove.o(.text))
  [Called By]

  - >> GSM_Response

  __rt_memmove (ARM, 212 bytes, Stack size 0 bytes, rt_memmove.o(.text), UNUSED)
  [Calls]

  - >> __memmove_aligned
  - >> __aeabi_memcpy

  __memmove_lastfew (ARM, 0 bytes, Stack size unknown bytes, rt_memmove.o(.text), UNUSED)

  __aeabi_memclr (ARM, 0 bytes, Stack size 0 bytes, rt_memclr.o(.text))
  [Called By]

  - >> main
  - >> GSM_Wait_for_Msg
  - >> GSM_Response_Display
  - >> GSM_Msg_Display
  - >> GSM_Begin

  __rt_memclr (ARM, 64 bytes, Stack size 0 bytes, rt_memclr.o(.text), UNUSED)
  [Calls]

  - >> _memset_w

  _memset (ARM, 0 bytes, Stack size unknown bytes, rt_memclr.o(.text), UNUSED)

  __aeabi_memclr4 (ARM, 0 bytes, Stack size 4 bytes, rt_memclr_w.o(.text), UNUSED)

  __aeabi_memclr8 (ARM, 0 bytes, Stack size 4 bytes, rt_memclr_w.o(.text), UNUSED)

  __rt_memclr_w (ARM, 84 bytes, Stack size 4 bytes, rt_memclr_w.o(.text), UNUSED)

  _memset_w (ARM, 0 bytes, Stack size unknown bytes, rt_memclr_w.o(.text), UNUSED)
  [Called By]

  - >> __rt_memclr

  __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)

  __aeabi_errno_addr (ARM, 16 bytes, Stack size 0 bytes, rt_errno_addr_intlibspace.o(.text))
  [Called By]

  - >> _strtoul (via Veneer)
  - >> strtol (via Veneer)
  - >> atoi (via Veneer)

  __errno$intlibspace (ARM, 0 bytes, Stack size 0 bytes, rt_errno_addr_intlibspace.o(.text), UNUSED)

  __rt_errno_addr$intlibspace (ARM, 0 bytes, Stack size 0 bytes, rt_errno_addr_intlibspace.o(.text), UNUSED)

  _printf_int_common (Thumb, 182 bytes, Stack size 40 bytes, _printf_intcommon.o(.text))
  [Stack]

  - Max Depth = 40
  - Call Chain = _printf_int_common
  [Calls]
  - >> _printf_pre_padding (Weak Reference)
  - >> _printf_post_padding (Weak Reference)
  - >> __ARM_common_call_via_r2
  [Called By]
  - >> _printf_int_dec

  _printf_char_common (Thumb, 38 bytes, Stack size 72 bytes, _printf_char_common.o(.text))
  [Stack]

  - Max Depth = 96 + Unknown Stack Size
  - Call Chain = _printf_char_common ⇒ __printf
  [Calls]
  - >> __printf
  [Called By]
  - >> __2sprintf

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

  - >> __2sprintf
  [Address Reference Count : 1]
  - noretval__2sprintf.o(.text)

  _printf_cs_common (Thumb, 26 bytes, Stack size 8 bytes, _printf_char.o(.text))
  [Stack]

  - Max Depth = 24
  - Call Chain = _printf_cs_common ⇒ _printf_str
  [Calls]
  - >> _printf_mbtowc (Weak Reference)
  - >> _printf_str
  [Called By]
  - >> _printf_string
  - >> _printf_char

  _printf_char (Thumb, 16 bytes, Stack size 0 bytes, _printf_char.o(.text), UNUSED)
  [Calls]

  - >> _printf_cs_common

  _printf_string (Thumb, 8 bytes, Stack size 0 bytes, _printf_char.o(.text))
  [Stack]

  - Max Depth = 24
  - Call Chain = _printf_string ⇒ _printf_cs_common ⇒ _printf_str
  [Calls]
  - >> _printf_cs_common
  [Called By]
  - >> _printf_s (via Veneer)

  strtol (Thumb, 112 bytes, Stack size 32 bytes, strtol.o(.text))
  [Stack]

  - Max Depth = 72
  - Call Chain = strtol ⇒ _strtoul
  [Calls]
  - >> _strtoul
  - >> __rt_ctype_table (via Veneer)
  - >> __aeabi_errno_addr (via Veneer)
  [Called By]
  - >> atoi

  __aeabi_memcpy (ARM, 0 bytes, Stack size 0 bytes, rt_memcpy.o(.text), UNUSED)
  [Called By]

  - >> __rt_memmove

  __rt_memcpy (ARM, 212 bytes, Stack size 0 bytes, rt_memcpy.o(.text), UNUSED)
  [Calls]

  - >> __aeabi_memcpy4

  _memcpy_lastbytes (ARM, 0 bytes, Stack size unknown bytes, rt_memcpy.o(.text), UNUSED)

  __aeabi_memmove4 (ARM, 0 bytes, Stack size 8 bytes, rt_memmove_w.o(.text), UNUSED)

  __aeabi_memmove8 (ARM, 0 bytes, Stack size 8 bytes, rt_memmove_w.o(.text), UNUSED)

  __rt_memmove_w (ARM, 128 bytes, Stack size 8 bytes, rt_memmove_w.o(.text), UNUSED)
  [Calls]

  - >> __aeabi_memcpy4

  __memmove_aligned (ARM, 0 bytes, Stack size unknown bytes, rt_memmove_w.o(.text), UNUSED)
  [Called By]

  - >> __rt_memmove

  __memmove_lastfew_aligned (ARM, 0 bytes, Stack size unknown bytes, rt_memmove_w.o(.text), UNUSED)

  __rt_udiv10 (ARM, 44 bytes, Stack size 0 bytes, rtudiv10.o(.text))
  [Called By]

  - >> _printf_int_dec (via Veneer)

  __user_libspace (ARM, 12 bytes, Stack size 0 bytes, libspace.o(.text), UNUSED)

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

  - >> __user_setup_stackheap

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

  __rt_ctype_table (ARM, 24 bytes, Stack size 8 bytes, rt_ctype_table.o(.text))
  [Stack]

  - Max Depth = 8
  - Call Chain = __rt_ctype_table
  [Calls]
  - >> __rt_locale
  [Called By]
  - >> strtol (via Veneer)

  _strtoul (Thumb, 166 bytes, Stack size 40 bytes, _strtoul.o(.text))
  [Stack]

  - Max Depth = 40
  - Call Chain = _strtoul
  [Calls]
  - >> _chval
  - >> __aeabi_errno_addr (via Veneer)
  [Called By]
  - >> strtol

  __aeabi_memcpy4 (ARM, 0 bytes, Stack size 8 bytes, rt_memcpy_w.o(.text), UNUSED)
  [Called By]

  - >> __rt_memmove_w
  - >> __rt_memcpy

  __aeabi_memcpy8 (ARM, 0 bytes, Stack size 8 bytes, rt_memcpy_w.o(.text), UNUSED)

  __rt_memcpy_w (ARM, 100 bytes, Stack size 8 bytes, rt_memcpy_w.o(.text), UNUSED)

  _memcpy_lastbytes_aligned (ARM, 0 bytes, Stack size unknown bytes, rt_memcpy_w.o(.text), UNUSED)

  __user_setup_stackheap (ARM, 96 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

  __rt_locale (ARM, 16 bytes, Stack size 0 bytes, rt_locale_intlibspace.o(.text))
  [Called By]

  - >> __rt_lib_init_lc_common (via Veneer)
  - >> __rt_ctype_table

  _chval (Thumb, 34 bytes, Stack size 0 bytes, _chval.o(.text))
  [Called By]

  - >> _strtoul

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

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

  strcmp (ARM, 156 bytes, Stack size 4 bytes, strcmp.o(.text))
  [Stack]

  - Max Depth = 4
  - Call Chain = strcmp
  [Called By]
  - >> _get_lc_ctype

  _sys_exit (ARM, 20 bytes, Stack size 0 bytes, sys_exit.o(.text))
  [Called By]

  - >> __rt_exit_exit

  __I$use$semihosting (ARM, 0 bytes, Stack size 0 bytes, use_no_semi.o(.text))
  [Address Reference Count : 1]

  - sys_exit.o(.text)

  __use_no_semihosting_swi (ARM, 4 bytes, Stack size 0 bytes, use_no_semi.o(.text), UNUSED)

  GSM_Begin (ARM, 108 bytes, Stack size 8 bytes, gsm.o(i.GSM_Begin))
  [Stack]

  - Max Depth = 48
  - Call Chain = GSM_Begin ⇒ GSM_Response ⇒ strncmp
  [Calls]
  - >> __aeabi_memclr
  - >> strstr (via Veneer)
  - >> delay_ms
  - >> UART0_SendString
  - >> GSM_Response
  [Called By]
  - >> main

  GSM_Calling (ARM, 48 bytes, Stack size 32 bytes, gsm.o(i.GSM_Calling))
  [Stack]

  - Max Depth = 160 + Unknown Stack Size
  - Call Chain = GSM_Calling ⇒ __2sprintf ⇒ _printf_char_common ⇒ __printf
  [Calls]
  - >> __2sprintf (via Veneer)
  - >> UART0_SendString
  [Called By]
  - >> main

  GSM_HangCall (ARM, 20 bytes, Stack size 4 bytes, gsm.o(i.GSM_HangCall))
  [Stack]

  - Max Depth = 12
  - Call Chain = GSM_HangCall ⇒ UART0_SendString
  [Calls]
  - >> UART0_SendString
  [Called By]
  - >> main

  GSM_Msg_Delete (ARM, 60 bytes, Stack size 32 bytes, gsm.o(i.GSM_Msg_Delete))
  [Stack]

  - Max Depth = 160 + Unknown Stack Size
  - Call Chain = GSM_Msg_Delete ⇒ __2sprintf ⇒ _printf_char_common ⇒ __printf
  [Calls]
  - >> __2sprintf (via Veneer)
  - >> UART0_SendString
  [Called By]
  - >> main

  GSM_Msg_Display (ARM, 532 bytes, Stack size 16 bytes, gsm.o(i.GSM_Msg_Display))
  [Stack]

  - Max Depth = 24
  - Call Chain = GSM_Msg_Display ⇒ strlen
  [Calls]
  - >> __aeabi_memclr
  - >> strlen (via Veneer)
  - >> strstr (via Veneer)
  - >> delay_ms
  - >> UART0_TxChar
  - >> UART0_SendString
  [Called By]
  - >> GSM_Msg_Read

  GSM_Msg_Read (ARM, 44 bytes, Stack size 24 bytes, gsm.o(i.GSM_Msg_Read))
  [Stack]

  - Max Depth = 152 + Unknown Stack Size
  - Call Chain = GSM_Msg_Read ⇒ __2sprintf ⇒ _printf_char_common ⇒ __printf
  [Calls]
  - >> __2sprintf (via Veneer)
  - >> UART0_SendString
  - >> GSM_Msg_Display
  [Called By]
  - >> main

  GSM_Response (ARM, 204 bytes, Stack size 24 bytes, gsm.o(i.GSM_Response))
  [Stack]

  - Max Depth = 40
  - Call Chain = GSM_Response ⇒ strncmp
  [Calls]
  - >> __aeabi_memmove
  - >> strlen (via Veneer)
  - >> strncmp (via Veneer)
  - >> delay_ms
  - >> GSM_Response_Display
  [Called By]
  - >> main
  - >> GSM_Begin

  GSM_Response_Display (ARM, 216 bytes, Stack size 8 bytes, gsm.o(i.GSM_Response_Display))
  [Stack]

  - Max Depth = 16
  - Call Chain = GSM_Response_Display ⇒ strlen
  [Calls]
  - >> __aeabi_memclr
  - >> strlen (via Veneer)
  - >> UART0_TxChar
  [Called By]
  - >> GSM_Response

  GSM_Wait_for_Msg (ARM, 348 bytes, Stack size 16 bytes, gsm.o(i.GSM_Wait_for_Msg))
  [Stack]

  - Max Depth = 104
  - Call Chain = GSM_Wait_for_Msg ⇒ atoi ⇒ strtol ⇒ _strtoul
  [Calls]
  - >> __aeabi_memclr
  - >> strlen (via Veneer)
  - >> strstr (via Veneer)
  - >> atoi (via Veneer)
  - >> delay_ms
  [Called By]
  - >> main

  UART0_Interrupt (ARM, 76 bytes, Stack size 12 bytes, gsm.o(i.UART0_Interrupt))
  [Stack]

  - Max Depth = 12
  - Call Chain = UART0_Interrupt
  [Address Reference Count : 1]
  - gsm.o(i.main)

  UART0_SendString (ARM, 76 bytes, Stack size 8 bytes, gsm.o(i.UART0_SendString))
  [Stack]

  - Max Depth = 8
  - Call Chain = UART0_SendString
  [Calls]
  - >> UART0_TxChar
  [Called By]
  - >> main
  - >> GSM_Msg_Read
  - >> GSM_Msg_Display
  - >> GSM_Msg_Delete
  - >> GSM_HangCall
  - >> GSM_Calling
  - >> GSM_Begin

  UART0_TxChar (ARM, 56 bytes, Stack size 0 bytes, gsm.o(i.UART0_TxChar))
  [Called By]

  - >> UART0_SendString
  - >> GSM_Response_Display
  - >> GSM_Msg_Display

  UART0_init (ARM, 68 bytes, Stack size 0 bytes, gsm.o(i.UART0_init))
  [Called By]

  - >> main

  __ARM_common_call_via_r1 (Thumb, 2 bytes, Stack size 0 bytes, __printf.o(i.__ARM_common_call_via_r1))
  [Called By]

  - >> __printf

  __ARM_common_call_via_r2 (Thumb, 2 bytes, Stack size 0 bytes, __printf.o(i.__ARM_common_call_via_r2))
  [Called By]

  - >> _printf_int_common
  - >> _printf_str
  - >> __printf

  delay_ms (ARM, 56 bytes, Stack size 0 bytes, gsm.o(i.delay_ms))
  [Called By]

  - >> main
  - >> GSM_Wait_for_Msg
  - >> GSM_Response
  - >> GSM_Msg_Display
  - >> GSM_Begin

  main (ARM, 268 bytes, Stack size 8 bytes, gsm.o(i.main))
  [Stack]

  - Max Depth = 168 + Unknown Stack Size
  - Call Chain = main ⇒ GSM_Msg_Delete ⇒ __2sprintf ⇒ _printf_char_common ⇒ __printf
  [Calls]
  - >> __aeabi_memclr
  - >> strstr (via Veneer)
  - >> delay_ms
  - >> UART0_init
  - >> UART0_SendString
  - >> GSM_Wait_for_Msg
  - >> GSM_Response
  - >> GSM_Msg_Read
  - >> GSM_Msg_Delete
  - >> GSM_HangCall
  - >> GSM_Calling
  - >> GSM_Begin
  [Address Reference Count : 1]
  - rtentry2.o(.ARM.Collect$$rtentry$$0000000D)

  _get_lc_ctype (ARM, 80 bytes, Stack size 8 bytes, lc_ctype_c.o(locale$$code))
  [Stack]

  - Max Depth = 12
  - Call Chain = _get_lc_ctype ⇒ strcmp
  [Calls]
  - >> strcmp
  [Called By]
  - >> __rt_lib_init_lc_ctype_2 (via Veneer)
  [Address Reference Count : 1]
  - rt_ctype_table.o(.text)

  __fplib_config_pureend_doubles (ARM, 0 bytes, Stack size 0 bytes, fpinit.o(x$fpl$fpinit), UNUSED)

  _fp_init (ARM, 4 bytes, Stack size 0 bytes, fpinit.o(x$fpl$fpinit))
  [Called By]

  - >> __rt_lib_init (via Veneer)

  ### Local Symbols

  Undef_Handler (ARM, 4 bytes, Stack size unknown bytes, startup.o(RESET))
  [Calls]

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

  SWI_Handler (ARM, 4 bytes, Stack size unknown bytes, startup.o(RESET))
  [Calls]

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

  PAbt_Handler (ARM, 4 bytes, Stack size unknown bytes, startup.o(RESET))
  [Calls]

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

  DAbt_Handler (ARM, 4 bytes, Stack size unknown bytes, startup.o(RESET))
  [Calls]

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

  IRQ_Handler (ARM, 4 bytes, Stack size unknown bytes, startup.o(RESET))
  [Calls]

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

  FIQ_Handler (ARM, 4 bytes, Stack size unknown bytes, startup.o(RESET))
  [Calls]

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

  _printf_input_char (Thumb, 10 bytes, Stack size 0 bytes, _printf_char_common.o(.text))
  [Address Reference Count : 1]

  - _printf_char_common.o(.text)

  ### Undefined Global Symbols

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

  - >> exit

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

  - >> _printf_cs_common

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

  - >> _printf_int_common
  - >> _printf_str

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

  - >> _printf_int_common
  - >> _printf_str

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

  - >> _printf_int_dec

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

  - >> _printf_int_dec