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gcc.py
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gcc.py
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import re
from os.path import join, basename, splitext
from workspace_tools.toolchains import mbedToolchain
from workspace_tools.settings import GCC_ARM_PATH, GCC_CR_PATH, GCC_CS_PATH, CW_EWL_PATH, CW_GCC_PATH
class GCC(mbedToolchain):
LINKER_EXT = '.ld'
LIBRARY_EXT = '.a'
STD_LIB_NAME = "lib%s.a"
CIRCULAR_DEPENDENCIES = True
DIAGNOSTIC_PATTERN = re.compile('((?P<line>\d+):)(\d+:)? (?P<severity>warning|error): (?P<message>.+)')
def __init__(self, target, options=None, notify=None, tool_path=""):
mbedToolchain.__init__(self, target, options, notify)
if target.core == "Cortex-M0+":
cpu = "cortex-m0"
else:
cpu = target.core.lower()
self.cpu = ["-mcpu=%s" % cpu]
if target.core.startswith("Cortex"):
self.cpu.append("-mthumb")
if target.core == "Cortex-M4":
self.cpu.append("-mfpu=fpv4-sp-d16")
self.cpu.append("-mfloat-abi=softfp")
# Note: We are using "-O2" instead of "-Os" to avoid this known GCC bug:
# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46762
common_flags = ["-c", "-O2", "-Wall",
"-fmessage-length=0", "-fno-exceptions", "-fno-builtin",
"-ffunction-sections", "-fdata-sections",
"-MMD"
] + self.cpu
if "save-asm" in self.options:
common_flags.append("-save-temps")
if "debug-info" in self.options:
common_flags.append("-g")
self.asm = [join(tool_path, "arm-none-eabi-as")] + self.cpu
self.cc = [join(tool_path, "arm-none-eabi-gcc"), "-std=gnu99"] + common_flags
self.cppc =[join(tool_path, "arm-none-eabi-g++"), "-std=gnu++98"] + common_flags
self.ld = [join(tool_path, "arm-none-eabi-gcc"), "-Wl,--gc-sections"] + self.cpu
self.sys_libs = ["stdc++", "supc++", "m", "c", "gcc"]
self.ar = join(tool_path, "arm-none-eabi-ar")
self.elf2bin = join(tool_path, "arm-none-eabi-objcopy")
def assemble(self, source, object):
self.default_cmd(self.asm + ["-o", object, source])
def parse_dependencies(self, dep_path):
dependencies = []
for line in open(dep_path).readlines()[1:]:
file = line.replace('\\\n', '').strip()
if file:
dependencies.append(file)
return dependencies
def parse_output(self, output):
# The warning/error notification is multiline
WHERE, WHAT = 0, 1
state, file, message = WHERE, None, None
for line in output.splitlines():
# Each line should start with the file information: "filepath: ..."
# i should point past the file path ^
# avoid the first column in Windows (C:\)
i = line.find(':', 2)
if i == -1: continue
if state == WHERE:
file = line[:i]
message = line[i+1:].strip() + ' '
state = WHAT
elif state == WHAT:
match = GCC.DIAGNOSTIC_PATTERN.match(line[i+1:])
if match is None:
state = WHERE
continue
self.cc_info(
match.group('severity'),
file, match.group('line'),
message + match.group('message')
)
def archive(self, objects, lib_path):
self.default_cmd([self.ar, "rcs", lib_path] + objects)
def link(self, output, objects, libraries, lib_dirs, mem_map):
libs = []
for l in libraries:
name, _ = splitext(basename(l))
libs.append("-l%s" % name[3:])
libs.extend(["-l%s" % l for l in self.sys_libs])
# NOTE: There is a circular dependency between the mbed library and the clib
# We could define a set of week symbols to satisfy the clib dependencies in "sys.o",
# but if an application uses only clib symbols and not mbed symbols, then the final
# image is not correctly retargeted
if self.CIRCULAR_DEPENDENCIES:
libs.extend(libs)
self.default_cmd(self.ld + ["-T%s" % mem_map, "-o", output] +
objects + ["-L%s" % L for L in lib_dirs] + libs)
def binary(self, elf, bin):
self.default_cmd([self.elf2bin, "-O", "binary", elf, bin])
class GCC_ARM(GCC):
def __init__(self, target, options=None, notify=None):
GCC.__init__(self, target, options, notify, GCC_ARM_PATH)
# Use latest gcc nanolib
self.ld.append("--specs=nano.specs")
if target in ["LPC1768"]:
self.ld.extend(["-u", "_printf_float", "-u", "_scanf_float"])
self.sys_libs.append("nosys")
class GCC_CR(GCC):
def __init__(self, target, options=None, notify=None):
GCC.__init__(self, target, options, notify, GCC_CR_PATH)
additional_compiler_flags = [
"-D__NEWLIB__", "-D__CODE_RED", "-D__USE_CMSIS", "-DCPP_USE_HEAP",
]
self.cc += additional_compiler_flags
self.cppc += additional_compiler_flags
self.ld += ["-nostdlib"]
class GCC_CS(GCC):
def __init__(self, target, options=None, notify=None):
GCC.__init__(self, target, options, notify, GCC_CS_PATH)
class GCC_CW(GCC):
ARCH_LIB = {
"Cortex-M0+": "armv6-m",
}
def __init__(self, target, options=None, notify=None):
GCC.__init__(self, target, options, notify, CW_GCC_PATH)
class GCC_CW_EWL(GCC_CW):
def __init__(self, target, options=None, notify=None):
GCC_CW.__init__(self, target, options, notify)
# Compiler
common = [
'-mfloat-abi=soft',
'-nostdinc', '-I%s' % join(CW_EWL_PATH, "EWL_C", "include"),
]
self.cc += common + [
'-include', join(CW_EWL_PATH, "EWL_C", "include", 'lib_c99.prefix')
]
self.cppc += common + [
'-nostdinc++', '-I%s' % join(CW_EWL_PATH, "EWL_C++", "include"),
'-include', join(CW_EWL_PATH, "EWL_C++", "include", 'lib_ewl_c++.prefix')
]
# Linker
self.sys_libs = []
self.CIRCULAR_DEPENDENCIES = False
self.ld = [join(CW_GCC_PATH, "arm-none-eabi-g++"),
"-Xlinker", "--gc-sections",
"-L%s" % join(CW_EWL_PATH, "lib", GCC_CW.ARCH_LIB[target.core]),
"-n", "-specs=ewl_c++.specs", "-mfloat-abi=soft",
"-Xlinker", "--undefined=__pformatter_", "-Xlinker", "--defsym=__pformatter=__pformatter_",
"-Xlinker", "--undefined=__sformatter", "-Xlinker", "--defsym=__sformatter=__sformatter",
] + self.cpu
class GCC_CW_NEWLIB(GCC_CW):
def __init__(self, target, options=None, notify=None):
GCC_CW.__init__(self, target, options, notify)