Hi all,
We use the sdcc with our mcs51 project. But we encountered some problems in
the code
memory. The generate hex file is too large to burn into the mcu.
After we analyze the .map file, we found something funny:
1. The function use generic pointer is quite large.
2. The function has the int/long 's division/multiplication is very large.
3. And some strange ones, some of our empty functions is also very large,
the assembly
statement is only two lines, but the final size in .map file can achieve
1.5K.
We have used the --stack-auto compiler option.
Here is the mapfile section:
0C:179D _scs_set_param
0C:1812 _scs_reset_param this one is quite big
0C:1E67 _scs_slot_protocol
Here is the function:
#define SCS_ERR_UNSUPPORT 0x10
typedef unsigned char scs_err_t
typedef unsigned char scs_sid_t
scs_err_t scs_reset_param(scs_sid_t sid)
{
return SCS_ERR_UNSUPPORT;
}
Can any one tell me why it performs such a strange behavior and many thanks?
Best regards.
Li Xiaojun
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TEL:021-63183300-5407
FAX:021-63183300-5555
EMAIL: xiaojun...@soliton.com.cn
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