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defs.arm：源码内容

							# defs.arm - ARM specific definitions for the GNU toolchain
#
# modification history
# --------------------
# 01c,24jun02,m_h  define LONGCALL to allow far away ld relocations
# 01b,21jan02,sn   removed unused C++_TEMPLATE_INST
# 01a,18dec01,to   written
#
# DESCRIPTION
# This file contains ARM specific definitions and flags for the
# GNU tools (compiler, assembler, linker etc.)
#
# NOTE
# The file name comes from defs.$(VX_CPU_FAMILY)
#
include $(TGT_DIR)/h/tool/gnu/defs.gnu
include $(TGT_DIR)/h/tool/common/defs.arm
CC_OPTIM_DRIVER	= -O2 -fno-builtin -fvolatile
#CC_OPTIM_DRIVER	= -O2 -fvolatile
CC_OPTIM_NORMAL	= -O2 -fno-builtin
#CC_OPTIM_NORMAL	= -O2
CC_OPTIM_TARGET	= -O2 -fno-builtin -fvolatile
#CC_OPTIM_TARGET	= -O2 -fvolatile
LONGCALL = -mlong-calls
ifeq  ($(findstring _T,$(CPU)),_T)
# definitions for Thumb mode
CC_ARCH_SPEC	= -mthumb -mthumb-interwork
else
# definitions for ARM mode
CC_ARCH_SPEC	= -mapcs-32
endif
ifeq  ($(findstring be,$(TOOL)),be)
# definitions for big endian
CC_ARCH_SPEC	+= -mbig-endian
LDFLAGS		= -X -EB -N
LD_PARTIAL_FLAGS= -X -EB -r
else
# definitions for little endian
CC_ARCH_SPEC	+= -mlittle-endian
LDFLAGS		= -X -EL -N
LD_PARTIAL_FLAGS= -X -EL -r
endif
# end of defs.arm

						