fixed bsp/frdm-k64f gcc compile

bsp/frdm-k64f/K64FN1M0xxx12.ld

@@ -77,6 +77,19 @@ SECTIONS
         *(.dtors)
 
         *(.rodata*)
+/* section information for finsh shell */
+        . = ALIGN(4);
+        __fsymtab_start = .;
+        KEEP(*(FSymTab))
+        __fsymtab_end = .;
+        . = ALIGN(4);
+        __vsymtab_start = .;
+        KEEP(*(VSymTab))
+        __vsymtab_end = .;
+        . = ALIGN(4);
+
+        . = ALIGN(4);
+        _etext = .;
 
         KEEP(*(.eh_frame*))
     } > FLASH
@@ -127,7 +140,7 @@ SECTIONS
         __data_end__ = .;
 
     } > RAM
-
+    __bss_start = .;
     .bss :
     {
         __bss_start__ = .;
@@ -135,7 +148,7 @@ SECTIONS
         *(COMMON)
         __bss_end__ = .;
     } > RAM
-
+    __bss_end = .;
     .heap :
     {
         __end__ = .;

bsp/frdm-k64f/device/SConscript

@@ -5,18 +5,18 @@ from building import *
 # get current directory
 cwd = GetCurrentDir()
 
-
+path = [cwd, cwd + '/MK64F12']
 src = Glob('MK64F12/*.c')
 
 #add for startup script 
 if rtconfig.CROSS_TOOL == 'gcc':
      src = src + ['TOOLCHAIN_GCC_ARM/startup_MK64F12.S']
+     src = src + ['TOOLCHAIN_GCC_ARM/startup.c']
+     path += [cwd + 'TOOLCHAIN_GCC_ARM']
 elif rtconfig.CROSS_TOOL == 'keil':
      src = src + ['TOOLCHAIN_ARM_STD/startup_MK64F12.s']
 # elif rtconfig.CROSS_TOOL == 'iar':
 
-path = [cwd, cwd + '/MK64F12']
-
 #CPPDEFINES = ['']
 group = DefineGroup('Device', src, depend = [''], CPPPATH = path)
 #CPPDEFINES = CPPDEFINES)

bsp/frdm-k64f/device/TOOLCHAIN_GCC_ARM/startup_MK64F12.S

@@ -229,7 +229,9 @@ disable_watchdog:
 
     ldr   r0, =SystemInit
     blx   r0
-    ldr   r0, =_start
+    ldr   r0, =init_data_bss
+    blx   r0    
+    ldr   r0, =main
     bx    r0
     .pool
     .size Reset_Handler, . - Reset_Handler

bsp/frdm-k64f/rtconfig.py

@@ -12,10 +12,10 @@ if os.getenv('RTT_CC'):
 # EXEC_PATH is the compiler execute path, for example, CodeSourcery, Keil MDK, IAR
 if  CROSS_TOOL == 'gcc':
 	PLATFORM 	= 'gcc'
-	EXEC_PATH 	= 'C:/Program Files/CodeSourcery/Sourcery_CodeBench_Lite_for_ARM_EABI/bin'
+	EXEC_PATH 	= r'C:/Program Files/CodeSourcery/Sourcery_CodeBench_Lite_for_ARM_EABI/bin'
 elif CROSS_TOOL == 'keil':
 	PLATFORM 	= 'armcc'
-	EXEC_PATH 	= 'C:/Keil'
+	EXEC_PATH 	= r'C:/Keil'
 elif CROSS_TOOL == 'iar':
     print '================ERROR============================'
     print 'Not support iar yet!'
@@ -40,9 +40,9 @@ if PLATFORM == 'gcc':
     OBJCPY = PREFIX + 'objcopy'
 
     DEVICE = ' -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=hard -ffunction-sections -fdata-sections'
-    CFLAGS = DEVICE + ' -g -Wall '
-    AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp'
-    LFLAGS = DEVICE + ' -lm -lgcc -lc' + ' -Wl,--gc-sections,-Map=rtthread-k64f.map,-cref,-u,Reset_Handler -T K64FN1M0xxx12.ld'
+    CFLAGS = DEVICE + ' -g -Wall -D__ASSEMBLY__ -D__FPU_USED'
+    AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp -Wa,-mimplicit-it=thumb '
+    LFLAGS = DEVICE + ' -lm -lgcc -lc' + '  -nostartfiles -Wl,--gc-sections,-Map=rtthread-k64f.map,-cref,-u,Reset_Handler -T K64FN1M0xxx12.ld'
 
     CPATH = ''
     LPATH = ''