Files
poky/meta/conf/machine/include/tune-thumb.inc
Richard Purdie c8dee9b92d Convert to use direct access to the data store (instead of bb.data.*Var*())
This is the result of running the following over the metadata:

sed \
-e 's:bb.data.\(setVar([^,()]*,[^,()]*\), *\([^ )]*\) *):\2.\1):g' \
-e 's:bb.data.\(setVarFlag([^,()]*,[^,()]*,[^,()]*\), *\([^) ]*\) *):\2.\1):g' \
-e 's:bb.data.\(getVar([^,()]*\), *\([^(), ]*\) *,\([^)]*\)):\2.\1,\3):g' \
-e 's:bb.data.\(getVarFlag([^,()]*,[^,()]*\), *\([^(), ]*\) *,\([^)]*\)):\2.\1,\3):g' \
-e 's:bb.data.\(getVarFlag([^,()]*,[^,()]*\), *\([^() ]*\) *):\2.\1):g' \
-e 's:bb.data.\(getVar([^,()]*\), *\([^) ]*\) *):\2.\1):g' \
-i `grep -ril bb.data *`

(From OE-Core rev: b22831fd63164c4db9c0b72934d7d734a6585251)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2011-11-10 11:51:19 +00:00

33 lines
1.5 KiB
HTML

#tune file for thumb instructions
ARM_INSTRUCTION_SET ?= "arm"
# "arm" "thumb"
# The instruction set the compiler should use when generating application
# code. The kernel is always compiled with arm code at present. arm code
# is the original 32 bit ARM instruction set, thumb code is the 16 bit
# encoded RISC sub-set. Thumb code is smaller (maybe 70% of the ARM size)
# but requires more instructions (140% for 70% smaller code) so may be
# slower.
THUMB_INTERWORK ?= "yes"
# "yes" "no"
# Whether to compile with code to allow interworking between the two
# instruction sets. This allows thumb code to be executed on a primarily
# arm system and vice versa. It is strongly recommended that DISTROs not
# turn this off - the actual cost is very small.
OVERRIDE_THUMB = "${@['', ':thumb'][d.getVar('ARM_INSTRUCTION_SET', 1) == 'thumb']}"
OVERRIDE_INTERWORK = "${@['', ':thumb-interwork'][d.getVar('THUMB_INTERWORK', 1) == 'yes']}"
OVERRIDES .= "${OVERRIDE_THUMB}${OVERRIDE_INTERWORK}"
# Compiler and linker options for application code and kernel code. These
# options ensure that the compiler has the correct settings for the selected
# instruction set and interworking.
ARM_INTERWORK_M_OPT = "${@['-mno-thumb-interwork', '-mthumb-interwork'][d.getVar('THUMB_INTERWORK', 1) == 'yes']}"
ARM_THUMB_M_OPT = "${@['-mno-thumb', '-mthumb'][d.getVar('ARM_INSTRUCTION_SET', 1) == 'thumb']}"
#
TUNE_CCARGS += "${ARM_INTERWORK_M_OPT} ${ARM_THUMB_M_OPT}"
TARGET_CC_KERNEL_ARCH += "-mno-thumb-interwork -mno-thumb"