Zahada GCC (ARM)
Jaroslav Buchta
jaroslav.buchta na hascomp.cz
Středa Říjen 14 06:08:14 CEST 2015
To je dalsi zahada, obecne se nekde uvadi (nejen u tohoto parametru)
nekdy 2, nekdy 1 minus, mel jsem za to, ze je to jedno. Navic to tam
strka automaticky EmBlocks
Kazdopadne podle odkazovaneho dokumentu to vypada, ze by to melo
fungovat stejne jako -T ? Ze by to bylo tim poradim pred/po seznamu
souboru? Jeste teda kouknu az bude cas, jestli se to nejak projevuje i
pri prekladu .c souboru.
Dne 14.10.2015 v 0:08 Milan B. napsal(a):
>
> Nemalo by tam byt " -Wl,--script="? (dve minuska)
>
> https://sourceware.org/binutils/docs/ld/Options.html#Options
>
> -m-
>
> On 13. 10. 2015 23:48, Jaroslav Buchta wrote:
>> muze mi nekdo vysvetlit, v cem je rozdil techto dvou prikazovych
>> radku pro linker?
>>
>> arm-none-eabi-gcc.exe -mfloat-abi=soft -fdata-sections
>> -ffunction-sections -Os -DUSE_HAL_DRIVER -DSTM32F051x8
>> -D__weak=__attribute__((weak)) -D__packed=__attribute__((__packed__))
>> -mthumb -mcpu=cortex-m0 -march=armv6-m -MMD -MP -fmessage-length=0
>> -Wall -g3 -o bin\Debug\Demo32F051.elf
>> obj\debug\drivers\cmsis\device\st\stm32f0xx\source\templates\gcc\startup_stm32f051x8.o
>> obj\debug\drivers\cmsis\device\st\stm32f0xx\source\templates\system_stm32f0xx.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_adc.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_adc_ex.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_cortex.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_dma.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_flash.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_flash_ex.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_gpio.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_pwr.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_pwr_ex.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_rcc.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_rcc_ex.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_uart.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_uart_ex.o
>> obj\debug\src\main.o obj\debug\src\stm32f0xx_hal_msp.o
>> obj\debug\src\stm32f0xx_it.o
>> -Wl,-Map=bin\Debug\Demo32F051.map -specs=nano.specs
>> -Wl,--gc-sections -lm -ffunction-sections -fdata-sections
>> -mcpu=cortex-m0 -march=armv6-m -T"SW4STM32\Demo32F051
>> Configuration\STM32F051K6Ux_FLASH.ld"
>>
>> Program size (bytes): 8632
>> Data size (bytes): 112
>> BSS size (bytes): 1776
>>
>> ------------- a tohoto:
>>
>> arm-none-eabi-gcc.exe -mfloat-abi=soft -fdata-sections
>> -ffunction-sections -Os -DUSE_HAL_DRIVER -DSTM32F051x8
>> -D__weak=__attribute__((weak)) -D__packed=__attribute__((__packed__))
>> -mthumb -mcpu=cortex-m0 -march=armv6-m -MMD -MP -fmessage-length=0
>> -Wall -g3
>> -Wl,-script="SW4STM32\Demo32F051 Configuration\STM32F051K6Ux_FLASH.ld"
>> -o bin\Debug\Demo32F051.elf
>> obj\debug\drivers\cmsis\device\st\stm32f0xx\source\templates\gcc\startup_stm32f051x8.o
>> obj\debug\drivers\cmsis\device\st\stm32f0xx\source\templates\system_stm32f0xx.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_adc.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_adc_ex.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_cortex.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_dma.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_flash.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_flash_ex.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_gpio.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_pwr.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_pwr_ex.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_rcc.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_rcc_ex.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_uart.o
>> obj\debug\drivers\stm32f0xx_hal_driver\src\stm32f0xx_hal_uart_ex.o
>> obj\debug\src\main.o obj\debug\src\stm32f0xx_hal_msp.o
>> obj\debug\src\stm32f0xx_it.o
>> -Wl,-Map=bin\Debug\Demo32F051.map -specs=nano.specs -Wl,--gc-sections
>> -lm -ffunction-sections -fdata-sections -mcpu=cortex-m0 -march=armv6-m
>>
>> Program size (bytes): 8916
>> Data size (bytes): 1084
>> BSS size (bytes): 1776
>>
>> -----------------------
>> Myslim, ze se to lisi jen ve zvyraznenem textu, v prvnim pripade do
>> option pridano rucne, ve druhem si to tam prida EmBlocks automaticky.
>> Mel jsem od oka za to, ze by to melo fungovat stejne, ale k
>> -Wl,-script jsem nenasel nic... zdrojaky a ostatni nastaveni jsou
>> stejna (doufam)
>> Tollchain je EmBlock bare metal ale nejnovejsi newlib to dela taky
>> podobne... V druhem pripade sezere pamet nejvic tohle:
>>
>> *(.data*)
>> .data.impure_data
>> 0x20000000 0x428 c:/program files
>> (x86)/emblocks/2.30/share/em_armgcc/bin/../lib/gcc/arm-none-eabi/4.7.3/../../../../arm-none-eabi/lib/armv6-m\libc.a(lib_a-impure.o)
>> .data._impure_ptr
>> 0x20000428 0x4 c:/program files
>> (x86)/emblocks/2.30/share/em_armgcc/bin/../lib/gcc/arm-none-eabi/4.7.3/../../../../arm-none-eabi/lib/armv6-m\libc.a(lib_a-impure.o)
>> 0x20000428 _impure_ptr
>> .data.SystemCoreClock
>> 0x2000042c 0x4
>> obj\debug\drivers\cmsis\device\st\stm32f0xx\source\templates\system_stm32f0xx.o
>> 0x2000042c SystemCoreClock
>> 0x20000430 . = ALIGN (0x4)
>> 0x20000430 _edata = .
>>
>> .jcr 0x20000430 0x0 load address 0x08002710
>> .jcr 0x20000430 0x0 c:/program files
>> (x86)/emblocks/2.30/share/em_armgcc/bin/../lib/gcc/arm-none-eabi/4.7.3/armv6-m/crtbegin.o
>>
>> .igot.plt 0x20000430 0x0 load address 0x08002710
>> .igot.plt 0x00000000 0x0 c:/program files
>> (x86)/emblocks/2.30/share/em_armgcc/bin/../lib/gcc/arm-none-eabi/4.7.3/armv6-m/crtbegin.o
>> 0x20000430 . = ALIGN (0x4)
>>
>>
>> v prvnim pripade vypada datova sekce takto, evidentne se pouzije jina
>> knihovna. Proc?
>>
>> *(.data*)
>> .data.SystemCoreClock
>> 0x20000000 0x4
>> obj\debug\drivers\cmsis\device\st\stm32f0xx\source\templates\system_stm32f0xx.o
>> 0x20000000 SystemCoreClock
>> .data.impure_data
>> 0x20000004 0x60 c:/program files
>> (x86)/emblocks/2.30/share/em_armgcc/bin/../lib/gcc/arm-none-eabi/4.7.3/../../../../arm-none-eabi/lib/armv6-m\libc_n.a(lib_a-impure.o)
>> .data._impure_ptr
>> 0x20000064 0x4 c:/program files
>> (x86)/emblocks/2.30/share/em_armgcc/bin/../lib/gcc/arm-none-eabi/4.7.3/../../../../arm-none-eabi/lib/armv6-m\libc_n.a(lib_a-impure.o)
>> 0x20000064 _impure_ptr
>> 0x20000068 . = ALIGN (0x4)
>> 0x20000068 _edata = .
>>
>>
>>
>>
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