adc_lcd.htm

for ARM LPC2114 convert adc data and display data on LPC....

</UL>
<BR>[Called By]<UL><LI><a href="#[cb780c]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;__main
<LI><a href="#[1134c24]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;__scatterload_rt2
</UL>

<P><STRONG><a name="[10de6a8]"></a>__rt_exit</STRONG> (ARM, 20 bytes, Stack size 8 bytes, kernel.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 16<LI>Call Chain = __rt_exit -> __rt_lib_shutdown</UL>
<BR>[Calls]<UL><LI><a href="#[11294d8]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__rt_lib_shutdown (via Veneer)
</UL>
<BR>[Called By]<UL><LI><a href="#[112f55c]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;exit (via Veneer)
</UL>

<P><STRONG><a name="[10de630]"></a>__rt_abort</STRONG> (ARM, 8 bytes, Stack size 0 bytes, kernel.o(.text), UNUSED)
<BR><BR>[Calls]<UL><LI><a href="#[10d6c9c]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_sys_exit
</UL>

<P><STRONG><a name="[10dde70]"></a>__user_setup_stackheap</STRONG> (ARM, 96 bytes, Stack size 8 bytes, sys_stackheap_outer.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 8 + Unknown Stack Size
<LI>Call Chain = __user_setup_stackheap</UL>
<BR>[Calls]<UL><LI><a href="#[be81fc]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__user_initial_stackheap
<LI><a href="#[10d67c0]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__user_perproc_libspace
</UL>
<BR>[Called By]<UL><LI><a href="#[cb7ec4]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;__rt_stackheap_init
</UL>

<P><STRONG><a name="[10dd330]"></a>__rt_stackheap_storage</STRONG> (ARM, 12 bytes, Stack size 0 bytes, rt_stackheap_storage_intlibspace.o(.text))
<BR><BR>[Called By]<UL><LI><a href="#[cb7ec4]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;__rt_stackheap_init
</UL>

<P><STRONG><a name="[10dc4dc]"></a>__lib_sel_fp_printf</STRONG> (Thumb, 2 bytes, Stack size 0 bytes, _printf_fp_dec.o(.text), UNUSED)

<P><STRONG><a name="[10dc464]"></a>_fp_display</STRONG> (Thumb, 806 bytes, Stack size 64 bytes, _printf_fp_dec.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 280<LI>Call Chain = _fp_display -> _fp_digits -> _btod_etento -> _btod_emul -> _e2e</UL>
<BR>[Calls]<UL><LI><a href="#[10d5bdc]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__rt_locale (via Veneer)
<LI><a href="#[10dbe50]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__ARM_stackcheck (Weak Reference)
<LI><a href="#[10dc55c]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_fp_addexp
<LI><a href="#[10dc5d4]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_fp_digits
<LI><a href="#[112671c]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__mathlib_classify (via Veneer)
</UL>
<BR>[Called By]<UL><LI><a href="#[10dc414]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;_printf_fp_dec_real
</UL>

<P><STRONG><a name="[10dc414]"></a>_printf_fp_dec_real</STRONG> (Thumb, 234 bytes, Stack size 56 bytes, _printf_fp_dec.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 336 + Unknown Stack Size
<LI>Call Chain = _printf_fp_dec_real -> _fp_display -> _fp_digits -> _btod_etento -> _btod_emul -> _e2e</UL>
<BR>[Calls]<UL><LI><a href="#[cb8b3c]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_printf_post_padding
<LI><a href="#[cb8bc0]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_printf_pre_padding
<LI><a href="#[10d74c4]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__ARM_call_via_r2
<LI><a href="#[10dbe50]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__ARM_stackcheck (Weak Reference)
<LI><a href="#[10dc464]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_fp_display
</UL>
<BR>[Called By]<UL><LI><a href="#[10df1e8]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;_printf_fp_dec (via Veneer)
</UL>

<P><STRONG><a name="[10db0bc]"></a>_printf_char_common</STRONG> (Thumb, 44 bytes, Stack size 88 bytes, _printf_char_common.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 472 + Unknown Stack Size
<LI>Call Chain = _printf_char_common -> __printf -> _printf_fp_dec -> _printf_fp_dec_real -> _fp_display -> _fp_digits -> _btod_etento -> _btod_emul -> _e2e</UL>
<BR>[Calls]<UL><LI><a href="#[10d0d98]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__printf
</UL>
<BR>[Called By]<UL><LI><a href="#[cb862c]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;__0sprintf
</UL>

<P><STRONG><a name="[10dab0c]"></a>_sputc</STRONG> (Thumb, 10 bytes, Stack size 0 bytes, _sputc.o(.text))
<BR><BR>[Called By]<UL><LI><a href="#[cb862c]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;__0sprintf
</UL>
<BR>[Address Reference Count : 1]<UL><LI> __0sprintf.o(.text)
</UL>
<P><STRONG><a name="[10d768c]"></a>__ARM_call_via_r0</STRONG> (Thumb, 2 bytes, Stack size unknown bytes, callvia.o(.text), UNUSED)

<P><STRONG><a name="[10d770c]"></a>__call_via_r0</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, callvia.o(.text), UNUSED)

<P><STRONG><a name="[10d7590]"></a>__ARM_call_via_r1</STRONG> (Thumb, 2 bytes, Stack size unknown bytes, callvia.o(.text))
<BR><BR>[Called By]<UL><LI><a href="#[10d0d98]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;__printf
</UL>

<P><STRONG><a name="[10d7610]"></a>__call_via_r1</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, callvia.o(.text), UNUSED)

<P><STRONG><a name="[10d74c4]"></a>__ARM_call_via_r2</STRONG> (Thumb, 2 bytes, Stack size unknown bytes, callvia.o(.text))
<BR><BR>[Called By]<UL><LI><a href="#[cb8b3c]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;_printf_post_padding
<LI><a href="#[cb8bc0]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;_printf_pre_padding
<LI><a href="#[10d0d98]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;__printf
<LI><a href="#[10dc414]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;_printf_fp_dec_real
<LI><a href="#[11307d0]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;_printf_outstr_char
</UL>

<P><STRONG><a name="[10d7514]"></a>__call_via_r2</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, callvia.o(.text), UNUSED)

<P><STRONG><a name="[10d73c8]"></a>__ARM_call_via_r3</STRONG> (Thumb, 2 bytes, Stack size unknown bytes, callvia.o(.text))
<BR><BR>[Called By]<UL><LI><a href="#[10d0d98]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;__printf
</UL>

<P><STRONG><a name="[10d7448]"></a>__call_via_r3</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, callvia.o(.text), UNUSED)

<P><STRONG><a name="[10d72cc]"></a>__ARM_call_via_r4</STRONG> (Thumb, 2 bytes, Stack size unknown bytes, callvia.o(.text), UNUSED)

<P><STRONG><a name="[10d734c]"></a>__call_via_r4</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, callvia.o(.text), UNUSED)

<P><STRONG><a name="[10d71d0]"></a>__ARM_call_via_r5</STRONG> (Thumb, 2 bytes, Stack size unknown bytes, callvia.o(.text), UNUSED)

<P><STRONG><a name="[10d7250]"></a>__call_via_r5</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, callvia.o(.text), UNUSED)

<P><STRONG><a name="[10d70d4]"></a>__ARM_call_via_r6</STRONG> (Thumb, 2 bytes, Stack size unknown bytes, callvia.o(.text), UNUSED)

<P><STRONG><a name="[10d7154]"></a>__call_via_r6</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, callvia.o(.text), UNUSED)

<P><STRONG><a name="[10d6fd8]"></a>__ARM_call_via_r7</STRONG> (Thumb, 2 bytes, Stack size unknown bytes, callvia.o(.text), UNUSED)

<P><STRONG><a name="[10d7058]"></a>__call_via_r7</STRONG> (Thumb, 0 bytes, Stack size unknown bytes, callvia.o(.text), UNUSED)

<P><STRONG><a name="[10d6c9c]"></a>_sys_exit</STRONG> (ARM, 20 bytes, Stack size 0 bytes, sys_exit.o(.text), UNUSED)
<BR><BR>[Called By]<UL><LI><a href="#[10de630]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;__rt_abort
</UL>

<P><STRONG><a name="[10d6698]"></a>__user_libspace</STRONG> (ARM, 8 bytes, Stack size 0 bytes, libspace.o(.text), UNUSED)

<P><STRONG><a name="[10d67c0]"></a>__user_perproc_libspace</STRONG> (ARM, 0 bytes, Stack size 0 bytes, libspace.o(.text))
<BR><BR>[Called By]<UL><LI><a href="#[10dde70]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;__user_setup_stackheap
</UL>

<P><STRONG><a name="[10d6738]"></a>__user_perthread_libspace</STRONG> (ARM, 0 bytes, Stack size 0 bytes, libspace.o(.text), UNUSED)

<P><STRONG><a name="[10d5bdc]"></a>__rt_locale</STRONG> (ARM, 12 bytes, Stack size 0 bytes, rt_locale_intlibspace.o(.text))
<BR><BR>[Called By]<UL><LI><a href="#[10dc464]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;_fp_display (via Veneer)
<LI><a href="#[1129528]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;__rt_lib_init (via Veneer)
</UL>

<P><STRONG><a name="[10d4f2c]"></a>_ll_udiv10</STRONG> (ARM, 160 bytes, Stack size 12 bytes, lludiv10.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 12<LI>Call Chain = _ll_udiv10</UL>
<BR>[Called By]<UL><LI><a href="#[10dc5d4]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;_fp_digits (via Veneer)
</UL>

<P><STRONG><a name="[10d48e4]"></a>_btod_etento</STRONG> (Thumb, 202 bytes, Stack size 72 bytes, bigflt0.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 120<LI>Call Chain = _btod_etento -> _btod_emul -> _e2e</UL>
<BR>[Calls]<UL><LI><a href="#[10d3930]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_btod_emul (via Veneer)
<LI><a href="#[10d3980]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_btod_ediv (via Veneer)
<LI><a href="#[10dbe50]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__ARM_stackcheck (Weak Reference)
<LI><a href="#[112ed34]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__aeabi_idivmod (via Veneer)
</UL>
<BR>[Called By]<UL><LI><a href="#[10dc5d4]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;_fp_digits
</UL>

<P><STRONG><a name="[10d0d98]"></a>__printf</STRONG> (Thumb, 740 bytes, Stack size 48 bytes, __printf.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 384 + Unknown Stack Size
<LI>Call Chain = __printf -> _printf_fp_dec -> _printf_fp_dec_real -> _fp_display -> _fp_digits -> _btod_etento -> _btod_emul -> _e2e</UL>
<BR>[Calls]<UL><LI><a href="#[10d080c]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_printf_wctomb (Weak Reference)
<LI><a href="#[10d0888]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_printf_wc (Weak Reference)
<LI><a href="#[10d0900]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_printf_str (Weak Reference)
<LI><a href="#[10d0978]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_printf_mbtowc (Weak Reference)
<LI><a href="#[10d09f4]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_printf_longlong_oct (Weak Reference)
<LI><a href="#[10d0a78]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_printf_longlong_hex (Weak Reference)
<LI><a href="#[10d0afc]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_printf_longlong_dec (Weak Reference)
<LI><a href="#[10d0b80]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_printf_int_dec (Weak Reference)
<LI><a href="#[10d0bfc]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_printf_fp_hex (Weak Reference)
<LI><a href="#[10d0c78]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_printf_charcount (Weak Reference)
<LI><a href="#[10d73c8]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__ARM_call_via_r3
<LI><a href="#[10d74c4]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__ARM_call_via_r2
<LI><a href="#[10d7590]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__ARM_call_via_r1
<LI><a href="#[10dbe50]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__ARM_stackcheck (Weak Reference)
<LI><a href="#[10df1e8]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_printf_fp_dec (via Veneer)
</UL>
<BR>[Called By]<UL><LI><a href="#[10db0bc]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;_printf_char_common
</UL>

<P><STRONG><a name="[11307d0]"></a>_printf_outstr_char</STRONG> (Thumb, 32 bytes, Stack size 16 bytes, _printf_outstr_char.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 16 + Unknown Stack Size
<LI>Call Chain = _printf_outstr_char</UL>
<BR>[Calls]<UL><LI><a href="#[10d74c4]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__ARM_call_via_r2
</UL>
<BR>[Address Reference Count : 1]<UL><LI> _printf_char_common.o(.text)
</UL>
<P><STRONG><a name="[11303d4]"></a>_printf_input_char</STRONG> (Thumb, 10 bytes, Stack size 0 bytes, _printf_input_char.o(.text))
<BR>[Address Reference Count : 1]<UL><LI> _printf_char_common.o(.text)
</UL>
<P><STRONG><a name="[112fb44]"></a>_get_lc_numeric</STRONG> (Thumb, 40 bytes, Stack size 8 bytes, lc_numeric_c.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 12<LI>Call Chain = _get_lc_numeric -> strcmp</UL>
<BR>[Calls]<UL><LI><a href="#[10dbe50]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__ARM_stackcheck (Weak Reference)
<LI><a href="#[1124bec]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;strcmp (via Veneer)
</UL>
<BR>[Called By]<UL><LI><a href="#[1129528]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;__rt_lib_init
</UL>

<P><STRONG><a name="[112f55c]"></a>exit</STRONG> (Thumb, 24 bytes, Stack size 8 bytes, exit.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 24<LI>Call Chain = exit -> __rt_exit -> __rt_lib_shutdown</UL>
<BR>[Calls]<UL><LI><a href="#[10dbe50]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__ARM_stackcheck (Weak Reference)
<LI><a href="#[10de6a8]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__rt_exit (via Veneer)
<LI><a href="#[112f48c]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_call_atexit_fns (Weak Reference)
</UL>
<BR>[Called By]<UL><LI><a href="#[10de7f0]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;__rt_entry
</UL>

<P><STRONG><a name="[112ed84]"></a>__aeabi_idiv</STRONG> (ARM, 0 bytes, Stack size 0 bytes, aeabi_sdiv.o(.text), UNUSED)

<P><STRONG><a name="[112ed34]"></a>__aeabi_idivmod</STRONG> (ARM, 364 bytes, Stack size 0 bytes, aeabi_sdiv.o(.text))
<BR><BR>[Calls]<UL><LI><a href="#[11258f0]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__aeabi_idiv0
</UL>
<BR>[Called By]<UL><LI><a href="#[10d48e4]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;_btod_etento (via Veneer)
<LI><a href="#[10dc55c]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;_fp_addexp (via Veneer)
</UL>

<P><STRONG><a name="[1129528]"></a>__rt_lib_init</STRONG> (Thumb, 188 bytes, Stack size 40 bytes, lib_init.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 52<LI>Call Chain = __rt_lib_init -> _get_lc_numeric -> strcmp</UL>
<BR>[Calls]<UL><LI><a href="#[10d5bdc]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__rt_locale (via Veneer)
<LI><a href="#[10dbe50]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__ARM_stackcheck (Weak Reference)
<LI><a href="#[11221f4]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_fp_init (via Veneer)
<LI><a href="#[1128b9c]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_signal_init (Weak Reference)
<LI><a href="#[1128c18]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_rand_init (Weak Reference)
<LI><a href="#[1128c90]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_initio (Weak Reference)
<LI><a href="#[1128d04]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_init_user_alloc (Weak Reference)
<LI><a href="#[1128d84]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_init_alloc (Weak Reference)
<LI><a href="#[1128dfc]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_getenv_init (Weak Reference)
<LI><a href="#[1128e78]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_get_lc_time (Weak Reference)
<LI><a href="#[1128ef4]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_get_lc_monetary (Weak Reference)
<LI><a href="#[1128f74]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_get_lc_ctype (Weak Reference)
<LI><a href="#[1128ff0]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_get_lc_collate (Weak Reference)
<LI><a href="#[112906c]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_fp_trap_init (Weak Reference)
<LI><a href="#[11290e8]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_clock_init (Weak Reference)
<LI><a href="#[1129160]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_atexit_init (Weak Reference)
<LI><a href="#[1129258]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__cpp_initialize__aeabi_ (Weak Reference)
<LI><a href="#[11292e0]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__alloca_initialize (Weak Reference)
<LI><a href="#[1129360]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__Heap_DescSize (Weak Reference)
<LI><a href="#[11293dc]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__ARM_exceptions_init (Weak Reference)
<LI><a href="#[11295f4]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__ARM_argv_veneer (via Veneer)
<LI><a href="#[112fb44]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_get_lc_numeric
</UL>
<BR>[Called By]<UL><LI><a href="#[10de7f0]">&lt;&lt;</a>&nbsp;&nbsp;&nbsp;__rt_entry (via Veneer)
</UL>

<P><STRONG><a name="[11294d8]"></a>__rt_lib_shutdown</STRONG> (Thumb, 26 bytes, Stack size 8 bytes, lib_init.o(.text))
<BR><BR>[Stack]<UL><LI>Max Depth = 8<LI>Call Chain = __rt_lib_shutdown</UL>
<BR>[Calls]<UL><LI><a href="#[10dbe50]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;__ARM_stackcheck (Weak Reference)
<LI><a href="#[1128a9c]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_terminateio (Weak Reference)
<LI><a href="#[1128b18]">&gt;&gt;</a>&nbsp;&nbsp;&nbsp;_terminate_user_alloc (Weak Reference)