Hi Folks,
My friend has Code Composer Studio (CCS) license. He compiled without debugging
and no optimization. Code size (ROM) is only 35 KB. This is good for
MSP430G2955 that has 56 KB of Flash.
I compiled the same code using mspgcc, I get the following (-g -Oo):
/usr/lib/gcc/msp430/4.6.3/../../../../msp430/bin/ld: lpwmn.elf section `.text'
will not fit in region `rom'
/usr/lib/gcc/msp430/4.6.3/../../../../msp430/bin/ld: section .vectors loaded at
[0000ffe0,0000ffff] overlaps section .text loaded at [00002100,0001078f]
/usr/lib/gcc/msp430/4.6.3/../../../../msp430/bin/ld: region `rom' overflowed by
2674 bytes
/usr/lib/gcc/msp430/4.6.3/libcrt0.a(_copy_data.o): In function `__do_copy_data':
/build/buildd/gcc-msp430-4.6.3~mspgcc-20120406/./gcc-4.6.3/gcc/config/msp430/crt0.S:195:
relocation truncated to fit: R_MSP430_16_BYTE against symbol
`__data_load_start' defined in *ABS* section in lpwmn.elf
/usr/lib/gcc/msp430/4.6.3/crt0ivtbl16.o: In function `__isr_14':
(.text+0x2): relocation truncated to fit: R_MSP430_16 against symbol
`_unexpected_' defined in .text.crt0 section in
/usr/lib/gcc/msp430/4.6.3/libcrt0.a(_unexpected_.o)
./4lpwmn/util/src/util.o: In function `UTIL_initTraceCntxt':
util.c:(.text+0x4f6): relocation truncated to fit: R_MSP430_16 against symbol
`memset' defined in .text section in /usr/msp430/lib/libc.a(memset.o)
./4lpwmn/system/src/system.o: In function `SYS_init':
system.c:(.text+0x14): relocation truncated to fit: R_MSP430_16 against symbol
`memset' defined in .text section in /usr/msp430/lib/libc.a(memset.o)
./4lpwmn/system/src/system.o: In function `SYS_loop':
system.c:(.text+0x614): relocation truncated to fit: R_MSP430_16 against symbol
`PHY_PIB_init' defined in .text section in ./4lpwmn/802_15_4e/src/phy_pib.o
system.c:(.text+0x61c): relocation truncated to fit: R_MSP430_16 against symbol
`ADP_init' defined in .text section in ./4lpwmn/adp/src/adp.o
system.c:(.text+0x716): relocation truncated to fit: R_MSP430_16 against symbol
`ADP_evtHndlr' defined in .text section in ./4lpwmn/adp/src/adp.o
system.c:(.text+0x8ec): relocation truncated to fit: R_MSP430_16 against symbol
`ADP_procPendingTrscns' defined in .text section in ./4lpwmn/adp/src/adp.o
system.c:(.text+0x974): relocation truncated to fit: R_MSP430_16 against symbol
`ADP_evtHndlr' defined in .text section in ./4lpwmn/adp/src/adp.o
./4lpwmn/smac/src/s_mac_cc1101.o: In function `MAC_csmaAttemptTxOnCca':
s_mac_cc1101.c:(.text+0x704): relocation truncated to fit: R_MSP430_16 against
symbol `CC1101_txToIdleTransitionTimeMilli' defined in .rodata section in
./4lpwmn/pltfrm/src/cc1101.o
./4lpwmn/smac/src/s_mac_cc1101.o: In function `MAC_getCsmaBackOff':
s_mac_cc1101.c:(.text+0x7f8): additional relocation overflows omitted from the
output
collect2: ld returned 1 exit status
make: *** [lpwmn.elf] Error 1
If I remove -g option and optimize for size (-Os), then I can get it down to 32
KB. Problem is I can't do debugging in this case. Am I missing some trick or is
CCS compiler doing something smart?
Regards,
Arvind
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