Wrap malloc_r, realloc_r and free_r functions for GCC

Author: niklarm

tools/export/gcc_arm_common.tmpl

@@ -37,12 +37,11 @@ CPU = {% block cpu %}{% for cf in cpu_flags %}{{cf|replace("-mfloat-abi=softfp",
 CC_FLAGS = {% block cc_flags %}$(CPU) -c -g -fno-common -fmessage-length=0 -Wall -Wextra -fno-exceptions -ffunction-sections -fdata-sections -fomit-frame-pointer -MMD -MP{% endblock %}
 CC_SYMBOLS = {% block cc_symbols %}{% for s in symbols %}-D{{s}} {% endfor %}{% endblock %}
 
-LD_FLAGS = {%- block ld_flags -%}
+LD_FLAGS = {%- block ld_flags -%} $(CPU) -Wl,--gc-sections --specs=nano.specs -Wl,--wrap,main -Wl,-Map=$(PROJECT).map,--cref -Wl,--wrap,_malloc_r -Wl,--wrap,_free_r -Wl,--wrap,_realloc_r
 {%- if "-mcpu=cortex-m0" in cpu_flags or "-mcpu=cortex-m0plus" in cpu_flags -%}
-{{ ' ' }}$(CPU) -Wl,--gc-sections --specs=nano.specs -Wl,--wrap,main -Wl,-Map=$(PROJECT).map,--cref
 #LD_FLAGS += -u _printf_float -u _scanf_float
 {%- else -%}
-{{ ' ' }}$(CPU) -Wl,--gc-sections --specs=nano.specs -u _printf_float -u _scanf_float -Wl,--wrap,main -Wl,-Map=$(PROJECT).map,--cref
+{{ ' ' }}-u _printf_float -u _scanf_float
 {%- endif -%}
 {% endblock %}
 LD_SYS_LIBS = {% block ld_sys_libs %}-lstdc++ -lsupc++ -lm -lc -lgcc -lnosys{% endblock %}

tools/toolchains/gcc.py

@@ -89,7 +89,7 @@ def __init__(self, target, options=None, notify=None, macros=None, silent=False,
             self.cc  = [join(GOANNA_PATH, "goannacc"), "--with-cc=" + main_cc.replace('\\', '/'), "-std=gnu99", "--dialect=gnu", '--output-format="%s"' % self.GOANNA_FORMAT] + common_flags
             self.cppc= [join(GOANNA_PATH, "goannac++"), "--with-cxx=" + main_cppc.replace('\\', '/'), "-std=gnu++98", "-fno-rtti", "--dialect=gnu", '--output-format="%s"' % self.GOANNA_FORMAT] + common_flags
 
-        self.ld = [join(tool_path, "arm-none-eabi-gcc"), "-Wl,--gc-sections", "-Wl,--wrap,main"] + self.cpu
+        self.ld = [join(tool_path, "arm-none-eabi-gcc"), "-Wl,--gc-sections", "-Wl,--wrap,main", "-Wl,--wrap,_malloc_r", "-Wl,--wrap,_free_r", "-Wl,--wrap,_realloc_r"] + self.cpu
         self.sys_libs = ["stdc++", "supc++", "m", "c", "gcc"]
 
         self.ar = join(tool_path, "arm-none-eabi-ar")
@@ -277,4 +277,3 @@ def __init__(self, target, options=None, notify=None, macros=None, silent=False,
         if target.name in ["LPC1768", "LPC4088", "LPC4088_DM", "LPC4330", "UBLOX_C027", "LPC2368"]:
             self.ld.extend(["-u _printf_float", "-u _scanf_float"])
         self.ld += ["-nostdlib"]
-