(gdb) file gcd
Reading symbols from gcd...done.
(gdb) start
Temporary breakpoint 1 at 0x10438: file gcd.s, line 19.
Starting program: /home/pi/gcd

Temporary breakpoint 1, main () at gcd.s:19
19      push {fp, lr}
(gdb) step
21      add fp, sp, #4
(gdb) step
24      sub sp, sp, #20
(gdb) step
26      ldr r0, =prompt1
(gdb) step
27      bl printf
(gdb) step
__printf (format=0x21048 "Largest number:\n") at printf.c:33
33  printf.c: No such file or directory.
(gdb) step
_IO_vfprintf_internal (s=0xb6fb7d90 <_IO_2_1_stdout_>,
    format=0x21048 "Largest number:\n", format@entry=0x0, ap=..., ap@entry=...)
    at vfprintf.c:1278
1278    vfprintf.c: No such file or directory.
(gdb) step
1282    in vfprintf.c
(gdb) step
1293    in vfprintf.c
(gdb) step
1315    in vfprintf.c
(gdb) step
__find_specmb (format=<optimized out>) at vfprintf.c:1304
1304    in vfprintf.c
(gdb) step
_IO_vfprintf_internal (s=0xb6fb7d90 <_IO_2_1_stdout_>,
    format=0x21048 "Largest number:\n", format@entry=0x0, ap=..., ap@entry=...)
    at vfprintf.c:1315
1315    in vfprintf.c
(gdb)
__find_specmb (format=0x21048 "Largest number:\n") at printf-parse.h:108
108 printf-parse.h: No such file or directory.
(gdb)
__strchrnul (s=s@entry=0x21048 "Largest number:\n", c_in=c_in@entry=37)
    at strchrnul.c:43
43  strchrnul.c: No such file or directory.
(gdb)
47  in strchrnul.c
(gdb)
71  in strchrnul.c
(gdb)
72  in strchrnul.c
(gdb)
76  in strchrnul.c
(gdb)
146 in strchrnul.c
(gdb)
121 in strchrnul.c
(gdb)
146 in strchrnul.c
(gdb)
121 in strchrnul.c
(gdb)
146 in strchrnul.c
(gdb)
121 in strchrnul.c
(gdb)
146 in strchrnul.c
(gdb)
121 in strchrnul.c
(gdb)
146 in strchrnul.c
(gdb)
121 in strchrnul.c
(gdb)

_IO_vfprintf_internal (s=0xb6fb7d90 <_IO_2_1_stdout_>,
    format=0x21048 "Largest number:\n", format@entry=0x0, ap=..., ap@entry=...)
    at vfprintf.c:1319
1319    vfprintf.c: No such file or directory.
(gdb)

1320    in vfprintf.c
(gdb)

__aeabi_read_tp () at ../sysdeps/unix/sysv/linux/arm/aeabi_read_tp.S:52
52  ../sysdeps/unix/sysv/linux/arm/aeabi_read_tp.S: No such file or directory.
(gdb)
53  in ../sysdeps/unix/sysv/linux/arm/aeabi_read_tp.S
(gdb)

_IO_vfprintf_internal (s=0xb6fb7d90 <_IO_2_1_stdout_>,
    format=0x21048 "Largest number:\n", format@entry=0x0, ap=..., ap@entry=...)
    at vfprintf.c:1323
1323    vfprintf.c: No such file or directory.
(gdb)

IO_validate_vtable (vtable=<optimized out>) at vfprintf.c:1323
1323    in vfprintf.c
(gdb)
_IO_vfprintf_internal (s=0xb6fb7d90 <_IO_2_1_stdout_>,
    format=0x21048 "Largest number:\n", format@entry=0x0, ap=..., ap@entry=...)

    at vfprintf.c:1323
1323    in vfprintf.c
(gdb)
IO_validate_vtable (vtable=0xb6fb5b1c <_IO_file_jumps>)
    at ../libio/libioP.h:832
832 ../libio/libioP.h: No such file or directory.
(gdb)
835 in ../libio/libioP.h
(gdb)
_IO_vfprintf_internal (s=0xb6fb7d90 <_IO_2_1_stdout_>,
    format=0x21048 "Largest number:\n", format@entry=0x0, ap=..., ap@entry=...)
    at ../libio/libioP.h:839
839 in ../libio/libioP.h
(gdb)


_IO_new_file_xsputn (f=0xb6fb7d90 <_IO_2_1_stdout_>, data=0x21048, n=16)
    at fileops.c:1206
1206    fileops.c: No such file or directory.
(gdb)
1211    in fileops.c
(gdb)

_IO_new_file_xsputn (n=16, data=0x21048, f=0xb6fb7d90 <_IO_2_1_stdout_>)
    at fileops.c:1218
1218    in fileops.c
(gdb)

1235    in fileops.c
(gdb)
1251    in fileops.c
(gdb)
IO_validate_vtable (vtable=<optimized out>) at fileops.c:1251
1251    in fileops.c
(gdb)
_IO_new_file_xsputn (n=16, data=<optimized out>,
    f=0xb6fb7d90 <_IO_2_1_stdout_>) at fileops.c:1251
1251    in fileops.c
(gdb)
IO_validate_vtable (vtable=0xb6fb5b1c <_IO_file_jumps>) at libioP.h:835
835 libioP.h: No such file or directory.
(gdb)
_IO_new_file_xsputn (n=16, data=<optimized out>,
    f=0xb6fb7d90 <_IO_2_1_stdout_>) at libioP.h:839
839 in libioP.h
(gdb)
_IO_new_file_overflow (f=0xb6fb7d90 <_IO_2_1_stdout_>, ch=-1) at fileops.c:740
740 fileops.c: No such file or directory.
(gdb)
747 in fileops.c
(gdb)
750 in fileops.c
(gdb)
752 in fileops.c
(gdb)

__GI__IO_doallocbuf (fp=fp@entry=0xb6fb7d90 <_IO_2_1_stdout_>) at genops.c:344
344 genops.c: No such file or directory.

(gdb)
346 in genops.c
(gdb)

347 in genops.c
(gdb)
IO_validate_vtable (vtable=<optimized out>) at genops.c:347
347 in genops.c
(gdb)
__GI__IO_doallocbuf (fp=fp@entry=0xb6fb7d90 <_IO_2_1_stdout_>) at genops.c:347
347 in genops.c
(gdb)
IO_validate_vtable (vtable=0xb6fb5b1c <_IO_file_jumps>) at libioP.h:835
835 libioP.h: No such file or directory.
(gdb)
__GI__IO_doallocbuf (fp=fp@entry=0xb6fb7d90 <_IO_2_1_stdout_>) at libioP.h:839
839 in libioP.h
(gdb)

__GI__IO_file_doallocate (fp=0xb6fb7d90 <_IO_2_1_stdout_>) at filedoalloc.c:84
84  filedoalloc.c: No such file or directory.
(gdb)
IO_validate_vtable (vtable=0xb6fb5b1c <_IO_file_jumps>) at libioP.h:835
835 libioP.h: No such file or directory.

(gdb)
__GI__IO_file_doallocate (fp=0xb6fb7d90 <_IO_2_1_stdout_>) at libioP.h:839
839 in libioP.h
(gdb)
__GI__IO_file_stat (fp=0xb6fb7d90 <_IO_2_1_stdout_>, st=0xbeffefbc)
    at fileops.c:1155
1155    fileops.c: No such file or directory.
(gdb)
___fxstat64 (vers=3, fd=1, buf=0xbeffefbc)
    at ../sysdeps/unix/sysv/linux/fxstat64.c:35
35  ../sysdeps/unix/sysv/linux/fxstat64.c: No such file or directory.
(gdb)

__GI__IO_file_doallocate (fp=0xb6fb7d90 <_IO_2_1_stdout_>) at filedoalloc.c:86
86  filedoalloc.c: No such file or directory.
(gdb)
91  in filedoalloc.c
(gdb)
__gnu_dev_major (__dev=34816) at ../include/sys/sysmacros.h:47
47  ../include/sys/sysmacros.h: No such file or directory.
(gdb)
91  filedoalloc.c: No such file or directory.
(gdb)
__GI__IO_file_doallocate (fp=0xb6fb7d90 <_IO_2_1_stdout_>) at filedoalloc.c:94
94  in filedoalloc.c
(gdb)
97  in filedoalloc.c
(gdb)
101 in filedoalloc.c
(gdb)





__GI___libc_malloc (bytes=1024) at malloc.c:3025
3025
malloc.c: No such file or directory.
(gdb)
3026    in malloc.c
(gdb)

3027    in malloc.c
(gdb)
malloc_hook_ini (sz=1024, caller=0xb6ec8b14 <__GI__IO_file_doallocate+152>)
    at hooks.c:30
30
hooks.c: No such file or directory.
(gdb)
31  in hooks.c
(gdb)

ptmalloc_init () at arena.c:291
291 arena.c: No such file or directory.
(gdb)
294 in arena.c
(gdb)

302 in arena.c
(gdb)

__GI__dl_addr (address=0xb6edb874 <ptmalloc_init>, info=0xbeffef90,

    info@entry=0xbeffef88, mapp=0xbeffef88, mapp@entry=0xbeffef80, symbolp=0x0)
    at dl-addr.c:132
132 dl-addr.c: No such file or directory.
(gdb)



134 in dl-addr.c
(gdb)





136 in dl-addr.c
(gdb)
138 in dl-addr.c
(gdb)
determine_info (symbolp=0xb6f81430 <__GI__dl_addr+64>, mapp=0xbeffef88,
    info=0xbeffef90, match=0xb6ffa300, addr=3069032564) at dl-addr.c:138

138 in dl-addr.c
(gdb)
31  in dl-addr.c
(gdb)
34  in dl-addr.c

(gdb)
38  in dl-addr.c
(gdb)

40  in dl-addr.c
(gdb)
42  in dl-addr.c
(gdb)
45  in dl-addr.c