update the GNU GCC link script.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1283 bbd45198-f89e-11dd-88c7-29a3b14d5316

bsp/stm3210/SConstruct

@@ -26,7 +26,7 @@ Export('rtconfig')
 objs = PrepareBuilding(env, RTT_ROOT)
 
 # STM32 firemare library building script
-objs = objs + SConscript(RTT_ROOT + '/bsp/stm3210/Libraries/SConscript', variant_dir='bsp/Libraries', duplicate=0)
+objs = objs + SConscript(RTT_ROOT + '/bsp/stm3210/Libraries/SConscript', variant_dir='build/bsp/Libraries', duplicate=0)
 
 # build program 
 env.Program(TARGET, objs)

bsp/stm3210/rtconfig.py

@@ -1,7 +1,7 @@
 # toolchains options
 ARCH='arm'
 CPU='stm32'
-CROSS_TOOL='keil'
+CROSS_TOOL='gcc'
 
 if  CROSS_TOOL == 'gcc':
 	PLATFORM 	= 'gcc'
@@ -28,7 +28,7 @@ if PLATFORM == 'gcc':
     OBJDUMP = PREFIX + 'objdump'
     OBJCPY = PREFIX + 'objcopy'
 
-    DEVICE = ' -mcpu=cortex-m3 -mthumb'
+    DEVICE = ' -mcpu=cortex-m3 -mthumb -ffunction-sections -fdata-sections'
     CFLAGS = DEVICE + ' -DRT_USING_MINILIBC'
     AFLAGS = ' -c' + DEVICE + ' -x assembler-with-cpp'
     LFLAGS = DEVICE + ' -Wl,--gc-sections,-Map=rtthread-stm32.map,-cref,-u,Reset_Handler -T stm32_rom.ld'
@@ -110,7 +110,6 @@ elif PLATFORM == 'iar':
     LFLAGS = ' --config stm32f10x_flash.icf'
     LFLAGS += ' --redirect _Printf=_PrintfTiny' 
     LFLAGS += ' --redirect _Scanf=_ScanfSmall' 
-#    LFLAGS = ' --map I:\RTT\20110219\rt-thread\bsp\stm3210\Debug\List\project.map 
     LFLAGS += ' --entry __iar_program_start'    
 
     EXEC_PATH = IAR_PATH + '/arm/bin/'

bsp/stm3210/stm32_rom.ld

@@ -24,6 +24,7 @@ SECTIONS
         *(.rodata*)
         *(.glue_7)
         *(.glue_7t)
+        *(.gnu.linkonce.t*)
 
         /* section information for finsh shell */
         . = ALIGN(4);
@@ -38,10 +39,18 @@ SECTIONS
 
         . = ALIGN(4);
         _etext = .;
+    } > CODE = 0
+
+    /* .ARM.exidx is sorted, so has to go in its own output section.  */
+    __exidx_start = .;
+    .ARM.exidx :
+    {
+        *(.ARM.exidx* .gnu.linkonce.armexidx.*)
 
         /* This is used by the startup in order to initialize the .data secion */
-	_sidata = _etext;
-	} > CODE = 0
+        _sidata = .;
+    } > CODE
+    __exidx_end = .;
 
     /* .data section which is used for initialized data */
 
@@ -53,6 +62,7 @@ SECTIONS
 
         *(.data)
         *(.data.*)
+        *(.gnu.linkonce.d*)
 
         . = ALIGN(4);
         /* This is used by the startup in order to initialize the .data secion */