mirror of
https://git.yoctoproject.org/poky
synced 2026-02-20 08:29:42 +01:00
a565ebd1da
* unfortunatelly that note about armv7 matching also armv7a is no longer valid since armv7 include in armv7 was replaced with armv6+neon in this commit: commit 75b8adbc042e0f65fb1286bc550d02becd3b6aea Author: Khem Raj <raj.khem@gmail.com> Date: Tue Mar 27 18:37:45 2012 -0700 tune/armv7: Delete since then thumb and arm feeds had the same architecture * be aware that this will rename lots of feeds (From OE-Core rev: 8e8839215032b57763a07363a560c3fd9d6f8e01) Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
26 lines
1.7 KiB
PHP
26 lines
1.7 KiB
PHP
# 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.
|
|
TUNEVALID[thumb] = "Use thumb instructions instead of ARM"
|
|
ARM_THUMB_M_OPT = "${@['-marm', '-mthumb'][d.getVar('ARM_INSTRUCTION_SET', True) == 'thumb']}"
|
|
TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "thumb", " ${ARM_THUMB_M_OPT}", "", d)}"
|
|
OVERRIDES .= "${@bb.utils.contains("TUNE_FEATURES", "thumb", ":thumb", "", d)}"
|
|
|
|
ARMPKGSFX_THUMB .= "${@bb.utils.contains("TUNE_FEATURES", [ "armv4", "thumb" ], "t", "", d)}"
|
|
ARMPKGSFX_THUMB .= "${@bb.utils.contains("TUNE_FEATURES", [ "armv5", "thumb" ], "t", "", d)}"
|
|
ARMPKGSFX_THUMB .= "${@bb.utils.contains("TUNE_FEATURES", [ "armv6", "thumb" ], "t", "", d)}"
|
|
ARMPKGSFX_THUMB .= "${@bb.utils.contains("TUNE_FEATURES", [ "armv7a", "thumb" ], "t2", "", d)}"
|
|
|
|
# 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.
|
|
TUNEVALID[no-thumb-interwork] = "Disable mixing of thumb and ARM functions"
|
|
TUNE_CCARGS .= "${@bb.utils.contains("TUNE_FEATURES", "no-thumb-interwork", " -mno-thumb-interwork", " -mthumb-interwork", d)}"
|
|
OVERRIDES .= "${@bb.utils.contains("TUNE_FEATURES", "no-thumb-interwork", ":thumb-interwork", "", d)}"
|
|
|
|
TARGET_CC_KERNEL_ARCH += "-mno-thumb-interwork -marm"
|