Resolving syscalls/_sbrk issue

Author: aethaniel

cores/arduino/syscalls.c

@@ -37,6 +37,8 @@ int valY = 0;
 
 void setup( void )
 {
+  char *pcBuff ;
+
   // Initialize the digital pin as an output.
   // Pin PIN_LED has an LED connected on most Arduino boards:
   //pinMode( PIN_LED, OUTPUT ) ;
@@ -69,6 +71,13 @@ void setup( void )
   attachInterrupt( 5, Interrupt_Pin5, FALLING ) ;
   attachInterrupt( 6, Interrupt_Pin6, RISING ) ;
   attachInterrupt( 7, Interrupt_Pin7, CHANGE) ;
+
+  pcBuff = (char *)malloc(50);
+  
+  strcpy(pcBuff, "CIAO");
+  Serial.println("----");
+  Serial.println(pcBuff);   // Outputs garbage instead of "CIAO"
+  Serial.println("----");  
 }
 
 static void led_step1( void )

cores/arduino/syscalls.h

@@ -12,21 +12,22 @@ version=1.5.6
 
 compiler.path={runtime.ide.path}/hardware/tools/gcc-arm-none-eabi-4.8.3-2014q1/bin/
 compiler.c.cmd=arm-none-eabi-gcc
-compiler.c.flags=-c -g -Os -w -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -Dprintf=iprintf
+compiler.c.flags=-mcpu={build.mcu} -mthumb -c -g -Os -w -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -Dprintf=iprintf
 #-std=gnu99
-compiler.c.elf.cmd=arm-none-eabi-g++
-compiler.c.elf.flags=-Os -Wl,--gc-sections
+#compiler.c.elf.cmd=arm-none-eabi-g++
+compiler.c.elf.cmd=arm-none-eabi-gcc
+compiler.c.elf.flags=-Os -Wl,--gc-sections -save-temps
 compiler.S.flags=-c -g -x assembler-with-cpp
 compiler.cpp.cmd=arm-none-eabi-g++
-compiler.cpp.flags=-c -g -Os -w -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -fno-rtti -fno-exceptions -Dprintf=iprintf
+compiler.cpp.flags=-mcpu={build.mcu} -mthumb -c -g -Os -w -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -fno-rtti -fno-exceptions -Dprintf=iprintf
 #-std=gnu++11
 compiler.ar.cmd=arm-none-eabi-ar
 compiler.ar.flags=rcs
 compiler.objcopy.cmd=arm-none-eabi-objcopy
 compiler.objcopy.eep.flags=-O ihex -j .eeprom --set-section-flags=.eeprom=alloc,load --no-change-warnings --change-section-lma .eeprom=0
 compiler.elf2hex.flags=-O binary
 compiler.elf2hex.cmd=arm-none-eabi-objcopy
-compiler.ldflags=
+compiler.ldflags=-mcpu={build.mcu} -mthumb -Wl,--cref -Wl,--check-sections -Wl,--gc-sections -Wl,--entry=Reset_Handler -Wl,--unresolved-symbols=report-all -Wl,--warn-common -Wl,--warn-section-align -Wl,--warn-unresolved-symbols
 compiler.size.cmd=arm-none-eabi-size
 compiler.define=-DARDUINO=
 
@@ -36,6 +37,7 @@ build.extra_flags=
 # These can be overridden in platform.local.txt
 compiler.c.extra_flags=
 compiler.c.elf.extra_flags=
+#compiler.c.elf.extra_flags=-v
 compiler.cpp.extra_flags=
 compiler.ar.extra_flags=
 compiler.elf2hex.extra_flags=
@@ -55,16 +57,19 @@ build.usb_manufacturer="Unknown"
 # ---------------------
 
 ## Compile c files
-recipe.c.o.pattern="{compiler.path}{compiler.c.cmd}" {compiler.c.flags} -mcpu={build.mcu} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.c.extra_flags} {build.extra_flags} {compiler.arm.cmsis.path} {includes} "{source_file}" -o "{object_file}"
+recipe.c.o.pattern="{compiler.path}{compiler.c.cmd}" {compiler.c.flags} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.c.extra_flags} {build.extra_flags} {compiler.arm.cmsis.path} {includes} "{source_file}" -o "{object_file}"
 
 ## Compile c++ files
-recipe.cpp.o.pattern="{compiler.path}{compiler.cpp.cmd}" {compiler.cpp.flags} -mcpu={build.mcu} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.cpp.extra_flags} {build.extra_flags} {compiler.arm.cmsis.path} {includes} "{source_file}" -o "{object_file}"
+recipe.cpp.o.pattern="{compiler.path}{compiler.cpp.cmd}" {compiler.cpp.flags} -DF_CPU={build.f_cpu} -DARDUINO={runtime.ide.version} -DARDUINO_{build.board} -DARDUINO_ARCH_{build.arch} {compiler.cpp.extra_flags} {build.extra_flags} {compiler.arm.cmsis.path} {includes} "{source_file}" -o "{object_file}"
 
 ## Create archives
-recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{build.path}/{archive_file}" "{object_file}"
+#recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{build.path}/lib{archive_file}" "{object_file}"
+recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compiler.ar.extra_flags} "{build.path}/libarduino_core.a" "{object_file}"
 
 ## Combine gc-sections, archives, and objects
-recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}" {compiler.c.elf.flags} -save-temps -mcpu={build.mcu} "-T{build.variant.path}/{build.ldscript}" "-Wl,-Map,{build.path}/{build.project_name}.map" {compiler.c.elf.extra_flags} -o "{build.path}/{build.project_name}.elf" --specs=nano.specs "-L{build.path}" -Wl,--start-group -lm -lgcc -Wl,--end-group -mthumb -Wl,--cref -Wl,--check-sections -Wl,--gc-sections -Wl,--entry=Reset_Handler -Wl,--unresolved-symbols=report-all -Wl,--warn-common -Wl,--warn-section-align -Wl,--warn-unresolved-symbols -Wl,--start-group {object_files} "{build.path}/{archive_file}" -Wl,--end-group
+#recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}" {compiler.c.elf.flags} -save-temps -mcpu={build.mcu} "-T{build.variant.path}/{build.ldscript}" "-Wl,-Map,{build.path}/{build.project_name}.map" {compiler.c.elf.extra_flags} -o "{build.path}/{build.project_name}.elf" --specs=nano.specs "-L{build.path}" -mthumb {compiler.ldflags} {object_files} -Wl,--start-group -lm -lgcc "{build.path}/{archive_file}" -Wl,--end-group
+#recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}"  "-L{build.path}" {compiler.c.elf.flags} "-T{build.variant.path}/{build.ldscript}" "-Wl,-Map,{build.path}/{build.project_name}.map" {compiler.c.elf.extra_flags} -o "{build.path}/{build.project_name}.elf" --specs=nano.specs {compiler.ldflags} {object_files} -Wl,--start-group -lm -lgcc -l{archive_file} -Wl,--end-group
+recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}"  "-L{build.path}" {compiler.c.elf.flags} {compiler.c.elf.extra_flags} "-T{build.variant.path}/{build.ldscript}" "-Wl,-Map,{build.path}/{build.project_name}.map" --specs=nano.specs --specs=nosys.specs {compiler.ldflags} -o "{build.path}/{build.project_name}.elf" {object_files} -Wl,--start-group -lm -larduino_core -Wl,--end-group
 
 ## Create eeprom
 recipe.objcopy.eep.pattern=
@@ -105,16 +110,16 @@ tools.openocd.upload.pattern="{path}/{cmd}" {upload.verbose} -s "{{{path}/share/
 
 tools.openocd.program.params.verbose=-d3
 tools.openocd.program.params.quiet=-d0
-tools.openocd.program.pattern="{path}/{cmd}" {program.verbose} -v
+tools.openocd.program.pattern=
 
 tools.openocd.erase.params.verbose=-d3
 tools.openocd.erase.params.quiet=-d0
-tools.openocd.erase.pattern="{path}/{cmd}" {erase.verbose} -v
+tools.openocd.erase.pattern=
 
-tools.openocd.bootloader.params.verbose=-d3
+tools.openocd.bootloader.params.verbose=-d2
 tools.openocd.bootloader.params.quiet=-d0
-#tools.openocd.bootloader.pattern="{path}/{cmd}" {bootloader.verbose} -s "{{path}/share/openocd/scripts/}" -f "{runtime.platform.path}/variants/{build.variant}/{build.openocdscript}" -c "program {{runtime.platform.path}/bootloaders/{bootloader.file}} verify reset"
-tools.openocd.bootloader.pattern="{path}/{cmd}" {bootloader.verbose} -s "{path}/share/openocd/scripts/" -f "../../../../../arduino/samd/variants/{build.variant}/{build.openocdscript}" -c "program {{{runtime.platform.path}/bootloaders/{bootloader.file}}} verify reset"
+tools.openocd.bootloader.pattern="{path}/{cmd}" {bootloader.verbose} -s "{{path}/share/openocd/scripts/}" -f "{runtime.platform.path}/variants/{build.variant}/{build.openocdscript}" -c "program {{runtime.platform.path}/bootloaders/{bootloader.file}} verify reset"
+#tools.openocd.bootloader.pattern="{path}/{cmd}" {bootloader.verbose} -s "{path}/share/openocd/scripts/" -f "../../../../../arduino/samd/variants/{build.variant}/{build.openocdscript}" -c "program {{{runtime.platform.path}/bootloaders/{bootloader.file}}} verify reset"
 
 #
 # OpenOCD burn bootloader

cores/validation/validation_core/test.cpp

@@ -58,6 +58,7 @@ MEMORY
  *   __StackLimit
  *   __StackTop
  *   __stack
+ *   __ram_end__
  */
 ENTRY(Reset_Handler)
 

platform.txt

@@ -44,13 +44,6 @@
 extern "C"{
 #endif // __cplusplus
 
-/**
- * Libc porting layers
- */
-#if defined (  __GNUC__  )
-#    include <syscalls.h> /** RedHat Newlib minimal stub */
-#endif
-
 /*----------------------------------------------------------------------------
  *        Pins
  *----------------------------------------------------------------------------*/