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История изменений

Исправление trex6, (текущая версия) : 

$ arm-none-eabi-objdump -h ./test1.elf 

./test1.elf:     file format elf32-littlearm

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
  0 .ARM.attributes 00000025  00000000  00000000  00000034  2**0
                  CONTENTS, READONLY
  1 .comment      0000002a  00000000  00000000  00000059  2**0
                  CONTENTS, READONLY
  2 .stack        00000100  00000000  00000000  00000088  2**3
                  CONTENTS
  3 .heap         00001000  00000000  00000000  00000188  2**3
                  CONTENTS
  4 .debug_abbrev 0000005d  00000000  00000000  00001188  2**0
                  CONTENTS, READONLY, DEBUGGING
  5 .debug_info   000000cb  00000000  00000000  000011e5  2**0
                  CONTENTS, READONLY, DEBUGGING
  6 .debug_line   000000b8  00000000  00000000  000012b0  2**0
                  CONTENTS, READONLY, DEBUGGING
  7 .debug_macinfo 000021b8  00000000  00000000  00001368  2**0
                  CONTENTS, READONLY, DEBUGGING
  8 .debug_loc    00000038  00000000  00000000  00003520  2**0
                  CONTENTS, READONLY, DEBUGGING
  9 .debug_pubnames 0000001b  00000000  00000000  00003558  2**0
                  CONTENTS, READONLY, DEBUGGING
 10 .debug_aranges 00000048  00000000  00000000  00003578  2**3
                  CONTENTS, READONLY, DEBUGGING
 11 .debug_ranges 00000030  00000000  00000000  000035c0  2**3
                  CONTENTS, READONLY, DEBUGGING
 12 .debug_str    00000044  00000000  00000000  000035f0  2**0
                  CONTENTS, READONLY, DEBUGGING
 13 .debug_frame  0000002c  00000000  00000000  00003634  2**2
                  CONTENTS, READONLY, DEBUGGING

В openocd 

Info : accepting 'gdb' connection from 3333
Warn : acknowledgment received, but no packet pending
undefined debug reason 6 - target needs reset
Info : JTAG tap: lpc1788.cpu tap/device found: 0x4ba00477 (mfg: 0x23b, part: 0xba00, ver: 0x4)
Warn : Only resetting the Cortex-M3 core, use a reset-init event handler to reset any peripherals
target state: halted
target halted due to debug-request, current mode: Thread 
xPSR: 0x01000000 pc: 0x000000f8 msp: 0x10004860

Линкую вот так: 

arm-none-eabi-gcc -T"lpc17xx.ld" -Xlinker --gc-sections -Wl,-Map,"test1.map" -mcpu=cortex-m3 -mthumb -g3 -o "test1.elf" ./main.o ./startup/gcc/startup_LPC177x_8x.o

Компилирую (точнее Eclipse компилирует) вот так: 

arm-none-eabi-gcc -x assembler-with-cpp -Wall -Wa,-adhlns="startup/gcc/startup_LPC177x_8x.o.lst" -c -fmessage-length=0 -MMD -MP -MF"startup/gcc/startup_LPC177x_8x.d" -MT"startup/gcc/startup_LPC177x_8x.d" -mcpu=cortex-m3 -mthumb -g3 -o "startup/gcc/startup_LPC177x_8x.o" "../startup/gcc/startup_LPC177x_8x.S"

arm-none-eabi-gcc -O0 -ffunction-sections -fdata-sections -Wall -Wa,-adhlns="main.o.lst" -c -fmessage-length=0 -MMD -MP -MF"main.d" -MT"main.d" -mcpu=cortex-m3 -mthumb -g3 -o "main.o" "../main.c"

Eclipse при линковке почему-то не указывает ни одного *.o файла, я их ручками дописал.

Исходная версия trex6, : 

$ arm-none-eabi-objdump -h ./test1.elf 

./test1.elf:     file format elf32-littlearm

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
  0 .ARM.attributes 00000025  00000000  00000000  00000034  2**0
                  CONTENTS, READONLY
  1 .comment      0000002a  00000000  00000000  00000059  2**0
                  CONTENTS, READONLY
  2 .stack        00000100  00000000  00000000  00000088  2**3
                  CONTENTS
  3 .heap         00001000  00000000  00000000  00000188  2**3
                  CONTENTS
  4 .debug_abbrev 0000005d  00000000  00000000  00001188  2**0
                  CONTENTS, READONLY, DEBUGGING
  5 .debug_info   000000cb  00000000  00000000  000011e5  2**0
                  CONTENTS, READONLY, DEBUGGING
  6 .debug_line   000000b8  00000000  00000000  000012b0  2**0
                  CONTENTS, READONLY, DEBUGGING
  7 .debug_macinfo 000021b8  00000000  00000000  00001368  2**0
                  CONTENTS, READONLY, DEBUGGING
  8 .debug_loc    00000038  00000000  00000000  00003520  2**0
                  CONTENTS, READONLY, DEBUGGING
  9 .debug_pubnames 0000001b  00000000  00000000  00003558  2**0
                  CONTENTS, READONLY, DEBUGGING
 10 .debug_aranges 00000048  00000000  00000000  00003578  2**3
                  CONTENTS, READONLY, DEBUGGING
 11 .debug_ranges 00000030  00000000  00000000  000035c0  2**3
                  CONTENTS, READONLY, DEBUGGING
 12 .debug_str    00000044  00000000  00000000  000035f0  2**0
                  CONTENTS, READONLY, DEBUGGING
 13 .debug_frame  0000002c  00000000  00000000  00003634  2**2
                  CONTENTS, READONLY, DEBUGGING

В openocd 

Info : accepting 'gdb' connection from 3333
Warn : acknowledgment received, but no packet pending
undefined debug reason 6 - target needs reset
Info : JTAG tap: lpc1788.cpu tap/device found: 0x4ba00477 (mfg: 0x23b, part: 0xba00, ver: 0x4)
Warn : Only resetting the Cortex-M3 core, use a reset-init event handler to reset any peripherals
target state: halted
target halted due to debug-request, current mode: Thread 
xPSR: 0x01000000 pc: 0x000000f8 msp: 0x10004860

Линкую вот так: 

arm-none-eabi-gcc -T"lpc17xx.ld" -Xlinker --gc-sections -Wl,-Map,"test1.map" -mcpu=cortex-m3 -mthumb -g3 -o "test1.elf" ./main.o ./startup/gcc/startup_LPC177x_8x.o

Компилирую вот так: 

arm-none-eabi-gcc -x assembler-with-cpp -Wall -Wa,-adhlns="startup/gcc/startup_LPC177x_8x.o.lst" -c -fmessage-length=0 -MMD -MP -MF"startup/gcc/startup_LPC177x_8x.d" -MT"startup/gcc/startup_LPC177x_8x.d" -mcpu=cortex-m3 -mthumb -g3 -o "startup/gcc/startup_LPC177x_8x.o" "../startup/gcc/startup_LPC177x_8x.S"

arm-none-eabi-gcc -O0 -ffunction-sections -fdata-sections -Wall -Wa,-adhlns="main.o.lst" -c -fmessage-length=0 -MMD -MP -MF"main.d" -MT"main.d" -mcpu=cortex-m3 -mthumb -g3 -o "main.o" "../main.c"