Zahada GCC (ARM)

Milan B. milan na bastl.sk
Středa Říjen 14 00:08:12 CEST 2015 

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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