defs.diab

IXP425的BSP代码

# defs.diab  -  arch independent definitions specific to the Diab toolchain
#
# modification history
# --------------------
# 02l,08may02,jab  removed -Xexception as it is default
# 02k,01may02,sn   Define TOOL_FAMILY, deprecate TOOL_VENDOR
# 02j,18apr02,jab  workaround CPP_PRINT_MACROS problem of writing .o (SPR75718
#                  + SPR75486)
# 02i,03apr02,jab  made -Xmismatch-warning only visible to C
# 02h,21mar02,rbl  adding macro so that project facility can add 
#				   -Xmemory-is-volatile to bsp files
# 02g,22mar02,dat  Adding PIC flags for bootInit.o (72825)
# 02f,13mar02,sn   SPR 74080 - added large project support for Diab
# 02e,07mar02,jab  added -Xlocal-data-area-static-only option
# 02d,14feb02,jab  added -r4 to LD_PARTIAL_LAST_FLAGS
# 02c,06feb02,t_m  change ranlib to ranlib$(TOOLENV)
# 02b,21jan02,sn   removed obsolete WFC flags; removed unused C++_TEMPLATE_INST
# 02a,02jan02,jab  use -Xclib-optim-off instead of -Xintrinsic-mask
# 01z,20dec01,jab  use -r instead of -r4
# 01y,13dec01,jab  added make variable BOOTCONFIG_FLAGS
# 01x,07dec01,dat  Adding -w to all dependency generation macros
# 01x,05dec01,tpw  Rename Diab linker scripts to facilitate regeneration from
#                  a common template.
# 01w,28nov01,jab  modified ldscript path
# 01v,13nov01,tam  changed definition of CC_LIB (repackaging)
# 01u,13nov01,dat  adding project link flags
# 01t,05nov01,rbl  let project facility know about optimization flags
# 01s,12nov01,tam  remove -Xrescan-restart; changed TOOL_CONFIG to 
#		   TOOL_COMMON_DIR
# 01r,12nov01,jab  really fixed CPP_PRINT_MACROS
# 01q,12nov01,jab  fixed CPP_PRINT_MACROS
# 01p,07nov01,jab  added -Xgenerate-paddr to LD_FLAGS
# 01o,06nov01,sn   pass the architecture name to munch
# 01n,06nov01,jab  various flag changes and documentation
# 01m,03nov01,tam  updated for repackaging
# 01l,01nov01,jab  flag changes
# 01k,30oct01,tpw  Take generic defaults from new fragment defs.common
# 01j,30oct01,sn   Use GNU nm and objcopy
# 01i,30oct01,jab  sync diab CPP definition with gnu
# 01h,29oct01,jab  added new ld script variables
# 01g,24oct01,dat  Relocating tool specific macros
# 01f,24oct01,jab  added new dependency generation variables
# 01e,22oct01,jab  cleaned up
# 01d,23oct01,dee  remove nm$(TOOLENV)
# 01c,19oct01,jab  added make variables for dependency generation option
#                  added missing OPTION_* make variables
# 01b,18oct01,dat  Moving tool specifics out of h/make
# 01a,17feb00,jab  created.
#
# DESCRIPTION
# This file contains architecture independent  definitions and flags for the
# Diab tools (compiler, assembler, linker etc.)
#
#
# The following switches are used to compile C/C++ source. Most of these
# are being used to make the compiler lax regarding coding conventions
# used in many source files; however, some are being used to work around
# problems in specific source files.
#
#
# -Xmismatch-warning=2     do not generate an error if identifiers are
#                          redeclared
# -ew1554                  do not generate an error if the operators of
#                          an expression have incompatible types
# -ew1551                  do not generate an error if function arguments
#                          don't match their prototype
# -ew1552                  do not generate an error if the type of an
#                          initializer does not match the type of the
#                          variable
# -ew1547                  do not generate an error if an attempt is made
#                          to take the address of an object that is not
#                          in memory
# -ew1086                  do not generate an error if identifiers are
#                          redeclared (same as -Xmismatch-warnings=2?) 
# -ew1047                  do not generate an error if a ptr-to-const
#                          is assigned to ptr
# -ei1516                  turn off 'paramater X is never used' warning
# -ei1643                  turn off 'narrowing signed-to-unsigned type
#                          conversion found: ...' warning
# -ei1604                  turn off 'usless assignment to variable X'
#                          warning
# -Xintrinsic-mask=0x0     turn off generation of abs/fabs intrinsic; is
#                          this still needed?
# -Xstrings-in-text=0      do not put string constants in text; Is this
#                          still needed?
# -Wa,-Xsemi-is-newline    treat semi-colons as newline; this is required
#                          to handle inline assembly correctly
#

## generic defaults from defs.common come first, so they can be overridden

include $(TGT_DIR)/h/tool/common/defs.common

## get TOOL_COMMON_DIR, TOOL_DIAB and TOOL_GNU from TOOL

TOOL_FAMILY     = diab
TOOL_COMMON_DIR	= $(subst diab,common,$(TOOL))
TOOL_DIAB	= $(TOOL)
TOOL_GNU	= $(subst diab,gnu,$(TOOL))

# Deprecated, use TOOL_FAMILY instead
TOOL_VENDOR	= diab

## diab toolchain binaries

AR			= dar
AS			= $(CC)
CC			= dcc
CXX			= $(CC)
CPP			= $(CC) -E -Xpreprocessor-lineno-off
LD			= dld
NM			= nm$(TOOLENV)

## utility binaries

RANLIB			= ranlib$(TOOLENV)
TCL			= wtxtcl
OBJCPY			= objcopy
SIZE			= size$(TOOLENV)

MUNCH           	= wtxtcl $(WIND_BASE)/host/src/hutils/munch.tcl $(MUNCH_FLAGS)

CF			=

CPP_PRINT_MACROS        = $(CC) $(TGT_FLAG) $(COMMON_COMPILER) -w -P \
			  -Xcpp-dump-symbols $(CC_INCLUDE) $(CC_DEFINES) \
			  -o $(NULL_DEVICE)

## project facility variables

LARGE_PROJECT   	= true
OPTION_INDIRECT_FILE    = -@
OPTION_NM_INDIRECT_FILE = @

CC_PROJECT_OPTIMIZE_FLAGS = -O -XO
PROJECT_BSP_FLAGS_EXTRA = $(filter -Xmemory-is-volatile,$(CC_OPTIM_TARGET))

## C flags

COMMON_COMPILER	= -W:c:,-Xmismatch-warning=2 -ew1554,1551,1552,1086,1047,1547 \
		  -Xclib-optim-off -Xansi -Xstrings-in-text=0 \
		  -Wa,-Xsemi-is-newline -ei1516,1643,1604 \
		  -Xlocal-data-area-static-only

CC_ARCH_SPEC	= $(TGT_FLAG)
CC_COMPILER     = $(COMMON_COMPILER)

CC_OPTIM_NORMAL	= -XO -Xsize-opt
CC_OPTIM_TARGET	= -XO -Xsize-opt -Xmemory-is-volatile
CC_OPTIM_DRIVER	= -Xmemory-is-volatile

CC_WARNINGS_ALL	= -Xlint
CC_WARNINGS_NONE= -w

# For T2.2, we only use this flag for GNU/MIPS combination.
# We will activate this for all arch's after T2.2 release (SPR 72825)
# CC_PIC		= -Xcode-relative-far

## C++ flags

C++_COMPILER	= $(COMMON_COMPILER)

## assembler flags

CFLAGS_AS	= $(CC_ARCH_SPEC) $(CC_COMPILER) $(CC_OPTIM) $(CC_INCLUDE) \
		  $(CC_DEFINES) $(OPTION_PP_AS) $(OPTION_LANG_ASM) -c \
		  $(ADDED_CFLAGS)

## linker flags

LDFLAGS			= $(TGT_FLAG) -X -N -Xgenerate-paddr
LD_PARTIAL_FLAGS	= $(TGT_FLAG) -X -r
LD_PARTIAL              = $(LD) $(LD_PARTIAL_FLAGS)
LD_ENTRY_OPT		= -e

# These are flags to pass to the linker the last time we do a
# relocatable link. They never get used by a bootable project
# and they only get used once by a downloadable project.

LD_PARTIAL_LAST_FLAGS   = -r4

LD_SCRIPT_RAM	= $(TGT_DIR)/h/tool/diab/ldscripts/link.RAM
LD_SCRIPT_ROM	= $(TGT_DIR)/h/tool/diab/ldscripts/link.ROM

# for cyclic link support

LD_START_GROUP		=
LD_END_GROUP		=
LD_PARTIAL_START_GROUP	=
LD_PARTIAL_END_GROUP	=

LD_LOW_FLAGS	= -D_VX_START_TEXT=0x$(RAM_LOW_ADRS)
LD_HIGH_FLAGS	= -D_VX_START_TEXT=0x$(RAM_HIGH_ADRS)
RES_LOW_FLAGS	= -D_VX_START_TEXT=0x$(ROM_LINK_ADRS) -D_VX_START_DATA=0x$(RAM_LOW_ADRS)
RES_HIGH_FLAGS	= -D_VX_START_TEXT=0x$(ROM_LINK_ADRS) -D_VX_START_DATA=0x$(RAM_HIGH_ADRS)

# Flags for VxWorks Project builds

LD_RAM_FLAGS     = $(LD_LOW_FLAGS)
LD_ROM_CPY_FLAGS = $(RES_HIGH_FLAGS)
LD_ROM_CMP_FLAGS = $(RES_HIGH_FLAGS)
LD_ROM_RES_FLAGS = $(RES_LOW_FLAGS)

# For 960 IMI
LD_IMI_ADRS	= -D_VX_TEXT_START=0x$(IMI_TEXT_ADRS) -D_VX_DATA_START=0x$(IMI_DATA_ADRS)

## utility flags

MUNCH_FLAGS     = -c $(TOOLENV)

NM_GLOB_FLAGS	= -g

## bsp flags

ROM_ENTRY       = _romInit
SYS_ENTRY       = _sysInit
USR_ENTRY       = _usrInit

# compressedEntry() must be first routine in .text section
BOOTCONFIG_FLAGS=-Xkill-opt=0x400000

## options

OPTION_PP		= -E
OPTION_PP_AS		= -Xpreprocess-assembly
OPTION_PP_NOLINENO	= -Xpreprocessor-lineno-off
OPTION_PP_COMMENT	= -C

OPTION_DEPEND		= -Xmake-dependency -w
OPTION_DEPEND_GEN	= -Xmake-dependency -Xincfile-missing-ignore -w
OPTION_DEPEND_C		= $(OPTION_DEPEND_GEN)
OPTION_DEPEND_AS	= $(OPTION_DEPEND)

OPTION_DOLLAR_SYMBOLS	= -Xdollar-in-ident
OPTION_ANSI		= -Xansi
OPTION_PASS_TO_LD       =

OPTION_NO_WARNINGS	=

OPTION_OBJECT_ONLY	= -c
OPTION_INCLUDE_DIR	= -I
OPTION_DEFINE_MACRO	= -D
# this line has a space at the end ("-o ")
OPTION_OBJECT_NAME	= -o 
OPTION_EXE_NAME		= $(OPTION_OBJECT_NAME)

# Library containing compiler support routines
CC_LIB                  =