ICCAVR编译后代码量跟实际不符，请教下！

只看该作者 · 2012-6-4 09:41

最近用到M16，用ICCAVR编译器。感觉程序代码才4000多行，编译后显示Device 97% full. 自己写的程序效率没这么低吧，把16K的空间都差不多写满了？
查看了下.map文件，貌似是实际代码量的2倍，是不是哪里设置没设置好？请教下各位谢谢！！
************************************************************
Addr Size Decimal Bytes (Attributes)
-------------------------------- ---- ---- ------- ----- ------------
                        text 01A8 3CAE =  15534. bytes (rel,con,rom)
   Addr  Global Symbol
   -----  --------------------------------
   00D4  __start
   00D4  __text_start
   00F4  _exit
   00F5  _IO_Init
   0110  _Time_Init
   0118  _Time0
   0195  _Sys_Init
   0294  _Watchdog_Init
   029A  _main
   0324  _SPI_Send
   032A  _SPI_Receive
   032F  _Wr_74HC595_Data
   034E  _delay3us
   0354  _delay10us
   0361  _delay1ms
   036E  _delay100ms
   037B  _LCD_CmdWrite
   039E  _LCD_Reset
   03A9  _LCD_DataWrite
   03CC  _LCD_WLCR
   03D6  _LCD_MISC
   03E0  _LCD_ADSR
   03EA  _LCD_INTR
   03F4  _LCD_WCCR
   03FE  _LCD_CHWI
   0408  _LCD_MAMR
   0412  _LCD_AWRR
   041C  _LCD_DWWR
   0426  _LCD_AWBR
   0430  _LCD_DWHR
   043A  _LCD_AWLR
   0444  _LCD_AWTR
   044E  _LCD_BGSG
   0458  _LCD_BGCM
   0462  _LCD_EDCM
   046C  _LCD_BTMR
   0476  _LCD_ITCR
   0480  _LCD_TPCR1
   048A  _LCD_TPXR
   0494  _LCD_TPYR
   049E  _LCD_TPZR
   04A8  _LCD_TPCR2
   04B2  _LCD_PWM
   04BC  _LCD_PDCR
   04C6  _LCD_FNCR
   04D0  _zoom
   04DE  _LCD_XY
   04F3  _clear
   0513  _clear1
   0531  _LCD_Initial
   0566  _Write_DDRAM
   0592  _Write_DDRAM_Num
   05FA  _Judge_Key
   067F  _Menu
   06A5  _MonitorSet_Screen
   085E  _Debug_Screen
   08ED  _Warning_Screen
   08EF  _Key_MonitorSet
   0CA6  _Key_Debug
   0EB1  _Key_Deal_Menu
   100C  _delayms
   1020  _Read_74HC165
   1044  _Out_Action
   106E  _Read_Temp
   1119  _I2c_Init
   111E  _I2c_Write
   1142  _I2c_Read
   1177  _Sig_Deal
   11FA  _StepMotor
   1249  _Act1
   1265  _Act2
   1282  _Delay
   1296  _Valve_Action
   16E1  _Clear
   175E  _Temp1_PID
   197E  _Heat1_duty
   19E8  _Temp0_PID
   1C08  _Heat0_duty
   1C72  push_arg4
   1C74  push_arg2
   1C77  mod16s
   1C7B  div16s
   1C95  mod16u
   1C97  div16u
   1C98  xdiv16u
   1CB1  mod8u
   1CB3  div8u
   1CB4  xdiv8u
   1CC9  empy16s
   1CD9  pop_gset2
   1CDC  pop_gset3
   1CDF  pop_gset4
   1CE2  pop_gset5
   1CE5  push_gset5
   1CE7  push_gset4
   1CE9  push_gset3
   1CEB  push_gset2
   1CED  push_gset1
   1CF0  pop_gset1
   1CF1  pop
   1D04  neg32
   1D0D  lpm32
   1D21  push_lset
   1D38  pop_lset
   1D4F  lsr16
   1D56  lsr8
   1D5C  fp2int
   1D65  nojump1
   1D6A  fp2long
   1D71  nojump2
   1D73  FTOI
   1D75  FTOL
   1DA4  int2fp
   1DAA  long2fp
   1DAF  ITOF
   1DC3  itof2
   1DC5  itof3
   1DD4  save_floatregs
   1DDF  restore_floatregs
   1DEA  stk2arg1
   1DEF  stk2arg0
   1DF4  float_epilog
   1DFB  float_prolog
   1DFE  add32fs
   1E01  add32f
   1E06  sub32fs
   1E09  sub32f
   1E0E  fret2
   1E15  FSUB
   1E16  FADD
   1E5B  usub24
   1E5F  cmp32f
   1E64  FLTCP
   1E90  empy32fs
   1E93  empy32f
   1E9C  eFMUL
   1EB4  eumul24
   1EDD  savfacc1
   1EE0  restorefacc1
   1EE3  unpackfacc1
   1EEC  negmant
   1EF2  maxres
   1EF9  minres
   1EFF  ac1toac2
   1F05  swapacc
   1F11  unpack
   1F23  repack
   1F2B  __text_end