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arch-arm*: add better support for gcc march extensions

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GCC has the ability to pass extensions to the march parameter, which
expand the funcationality of the march.  For example
"-march=armv7ve+simd" adds SIMD to ARMv7.  Currently, there is no way to
expand the march setting without modifying each instance, as you can't
guarantee the ordering when using the existing TUNE_CCARGS.  By
introducing two new variables, TUNE_CCARGS_MARCH and
TUNE_CCARGS_MARCH_OPT, we can enforce that these two go together.

Also, expand existing and create new feature files that use these
variables to expand the functionality.

(From OE-Core rev: 794eb617bfd1997e7a3498812c63a20c58a10554)

Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Jon Mason
2021-08-18 22:52:20 -04:00
committed by Richard Purdie
parent a3c1be72af
commit ff0ea5633a
18 changed files with 37 additions and 27 deletions
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4
meta/conf/machine/include/arm/arch-arm.inc
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@@ -14,3 +14,7 @@ TUNE_PKGARCH = "${ARMPKGARCH}${ARMPKGSFX_THUMB}${ARMPKGSFX_DSP}${ARMPKGSFX_EABI}
ABIEXTENSION = "eabi"
TARGET_FPU = "${@d.getVar('TUNE_CCARGS_MFLOAT') or 'soft'}"
# Some -march settings need a +X option passed in. Since we cannot guarantee that any specified TUNE_CCARGS option is set in any order, we must hard code the order here to allow for it.
TUNE_CCARGS_MARCH_OPTS ??= ""
TUNE_CCARGS .= "${TUNE_CCARGS_MARCH}${TUNE_CCARGS_MARCH_OPTS}"

2
meta/conf/machine/include/arm/arch-armv4.inc
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@@ -2,7 +2,7 @@ DEFAULTTUNE ?= "armv4"
TUNEVALID[arm] = "Enable ARM instruction set"
TUNEVALID[armv4] = "Enable instructions for ARMv4"
TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'armv4', ' -march=armv4${ARMPKGSFX_THUMB}', '', d)}"
TUNE_CCARGS_MARCH .= "${@bb.utils.contains('TUNE_FEATURES', 'armv4', ' -march=armv4${ARMPKGSFX_THUMB}', '', d)}"
# enable --fix-v4bx when we have armv4 in TUNE_FEATURES, but then disable it when we have also armv5 or thumb
# maybe we should extend bb.utils.contains to support check for any checkvalues in value, now it does
# checkvalues.issubset(val) which cannot be used for negative test of foo neither bar in value

2
meta/conf/machine/include/arm/arch-armv5.inc
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@@ -2,7 +2,7 @@ DEFAULTTUNE ?= "armv5"
TUNEVALID[armv5] = "Enable instructions for ARMv5"
TUNECONFLICTS[armv5] = "armv4"
TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'armv5', ' -march=armv5t${ARMPKGSFX_DSP}', '', d)}"
TUNE_CCARGS_MARCH .= "${@bb.utils.contains('TUNE_FEATURES', 'armv5', ' -march=armv5t${ARMPKGSFX_DSP}', '', d)}"
MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'armv5', 'armv5:', '', d)}"
require conf/machine/include/arm/arch-armv4.inc

2
meta/conf/machine/include/arm/arch-armv6.inc
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@@ -2,7 +2,7 @@ DEFAULTTUNE ?= "armv6hf"
TUNEVALID[armv6] = "Enable instructions for ARMv6"
TUNECONFLICTS[armv6] = "armv4 armv5"
TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'armv6', ' -march=armv6', '', d)}"
TUNE_CCARGS_MARCH .= "${@bb.utils.contains('TUNE_FEATURES', 'armv6', ' -march=armv6', '', d)}"
MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'armv6', 'armv6:', '', d)}"
require conf/machine/include/arm/arch-armv5-dsp.inc

2
meta/conf/machine/include/arm/arch-armv6m.inc
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@@ -7,7 +7,7 @@ TUNECONFLICTS[armv6m] = "armv4 armv5 armv6 armv7a"
# Use armv6s-m instead of armv6-m to avoid gcc bug "SVC is not permitted on this architecture".
# SVC is a valid instruction.
TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'armv6m', ' -march=armv6s-m', '', d)}"
TUNE_CCARGS_MARCH .= "${@bb.utils.contains('TUNE_FEATURES', 'armv6m', ' -march=armv6s-m', '', d)}"
MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'armv6m', 'armv6m:', '', d)}"
require conf/machine/include/arm/arch-armv5.inc

2
meta/conf/machine/include/arm/arch-armv7a.inc
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@@ -3,7 +3,7 @@ ARM_INSTRUCTION_SET ?= "thumb"
TUNEVALID[armv7a] = "Enable instructions for ARMv7-a"
TUNECONFLICTS[armv7a] = "armv4 armv5 armv6 armv7"
TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7a', ' -march=armv7-a', '', d)}"
TUNE_CCARGS_MARCH .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7a', ' -march=armv7-a', '', d)}"
MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'armv7a', 'armv7a:', '', d)}"
require conf/machine/include/arm/arch-armv6.inc

2
meta/conf/machine/include/arm/arch-armv7em.inc
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@@ -4,7 +4,7 @@
DEFAULTTUNE ?= "armv7em"
TUNEVALID[armv7em] = "Enable instructions for ARMv7e-m"
TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7em', ' -march=armv7e-m', '', d)}"
TUNE_CCARGS_MARCH .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7em', ' -march=armv7e-m', '', d)}"
MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'armv7em', 'armv7em:', '', d)}"
TUNECONFLICTS[armv7em] = "armv4 armv5 armv6 armv7a"

2
meta/conf/machine/include/arm/arch-armv7m.inc
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@@ -4,7 +4,7 @@
DEFAULTTUNE ?= "armv7m"
TUNEVALID[armv7m] = "Enable instructions for ARMv7-m"
TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7m', ' -march=armv7-m', '', d)}"
TUNE_CCARGS_MARCH .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7m', ' -march=armv7-m', '', d)}"
MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'armv7m', 'armv7m:', '', d)}"
TUNECONFLICTS[armv7m] = "armv4 armv5 armv6 armv7a"

2
meta/conf/machine/include/arm/arch-armv7ve.inc
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@@ -2,7 +2,7 @@ DEFAULTTUNE ?= "armv7vethf"
TUNEVALID[armv7ve] = "Enable instructions for ARMv7ve"
TUNECONFLICTS[armv7ve] = "armv4 armv5 armv6 armv7 armv7a"
TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7ve', ' -march=armv7ve', '', d)}"
TUNE_CCARGS_MARCH .= "${@bb.utils.contains('TUNE_FEATURES', 'armv7ve', ' -march=armv7ve', '', d)}"
MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'armv7ve', 'armv7ve:', '', d)}"
require conf/machine/include/arm/arch-armv7a.inc

2
meta/conf/machine/include/arm/arch-armv8-1m-main.inc
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@@ -5,7 +5,7 @@
DEFAULTTUNE ?= "armv8-1m-main"
TUNEVALID[armv8-1m-main] = "Enable instructions for ARMv8.1-m.main"
TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'armv8-1m-main', ' -march=armv8.1-m.main', '', d)}"
TUNE_CCARGS_MARCH .= "${@bb.utils.contains('TUNE_FEATURES', 'armv8-1m-main', ' -march=armv8.1-m.main', '', d)}"
MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'armv8-1m-main', 'armv8-1m-main:', '', d)}"
TUNECONFLICTS[armv8-1m-main] = "armv4 armv5 armv6 armv7a"

2
meta/conf/machine/include/arm/arch-armv8-2a.inc
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@@ -1,7 +1,7 @@
DEFAULTTUNE ?= "armv8-2a"
TUNEVALID[armv8-2a] = "Enable instructions for ARMv8-a"
TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'armv8-2a', ' -march=armv8.2-a', '', d)}"
TUNE_CCARGS_MARCH .= "${@bb.utils.contains('TUNE_FEATURES', 'armv8-2a', ' -march=armv8.2-a', '', d)}"
# TUNE crypto will be handled by arch-armv8a.inc below
MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'armv8-2a', 'armv8-2a:', '', d)}"

8
meta/conf/machine/include/arm/arch-armv8a.inc
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@@ -1,14 +1,12 @@
DEFAULTTUNE ?= "armv8a-crc"
TUNEVALID[armv8a] = "Enable instructions for ARMv8-a"
TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'armv8a', ' -march=armv8-a', '', d)}"
TUNEVALID[crc] = "Enable instructions for ARMv8-a Cyclic Redundancy Check (CRC)"
TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'crc', '+crc', '', d)}"
TUNEVALID[crypto] = "Enable instructions for ARMv8-a cryptographic"
TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'crypto', '+crypto', '', d)}"
TUNE_CCARGS_MARCH .= "${@bb.utils.contains('TUNE_FEATURES', 'armv8a', ' -march=armv8-a', '', d)}"
MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'armv8a', 'armv8a:', '', d)}"
require conf/machine/include/arm/arch-arm64.inc
require conf/machine/include/arm/feature-arm-crc.inc
require conf/machine/include/arm/feature-arm-crypto.inc
# Little Endian base configs
AVAILTUNES += "armv8a armv8a-crc armv8a-crc-crypto armv8a-crypto"

2
meta/conf/machine/include/arm/arch-armv8m-base.inc
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@@ -4,7 +4,7 @@
DEFAULTTUNE ?= "armv8m-base"
TUNEVALID[armv8m-base] = "Enable instructions for ARMv8-m.base"
TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'armv8m-base', ' -march=armv8-m.base', '', d)}"
TUNE_CCARGS_MARCH .= "${@bb.utils.contains('TUNE_FEATURES', 'armv8m-base', ' -march=armv8-m.base', '', d)}"
MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'armv8m-base', 'armv8m-base:', '', d)}"
TUNECONFLICTS[armv8m-base] = "armv4 armv5 armv6 armv7a"

14
meta/conf/machine/include/arm/arch-armv8m-main.inc
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@@ -4,23 +4,15 @@
DEFAULTTUNE ?= "armv8m-main"
require conf/machine/include/arm/arch-armv8m-base.inc
require conf/machine/include/arm/feature-arm-dsp.inc
require conf/machine/include/arm/feature-arm-neon.inc
TUNEVALID[armv8m-main] = "Enable instructions for ARMv8-m.main"
TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'armv8m-main', ' -march=armv8-m.main${MARCH_DSP}${MARCH_FPU}', '', d)}"
TUNE_CCARGS_MARCH .= "${@bb.utils.contains('TUNE_FEATURES', 'armv8m-main', ' -march=armv8-m.main', '', d)}"
MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'armv8m-main', 'armv8m-main:', '', d)}"
TUNECONFLICTS[armv8m-main] = "armv4 armv5 armv6 armv7a"
# FIXME - below taken from meta/conf/machine/include/arm/arch-armv5-dsp.inc and should be put into something more generic
TUNEVALID[dsp] = "ARM DSP functionality"
ARMPKGSFX_DSP = "${@bb.utils.contains('TUNE_FEATURES', [ 'dsp' ], 'e', '', d)}"
MARCH_DSP = "${@bb.utils.contains('TUNE_FEATURES', [ 'dsp' ], '+dsp', '+nodsp', d)}"
# FIXME - Below belongs in meta/conf/machine/include/arm/feature-arm-neon.inc
TUNEVALID[vfpv5spd16] = "Enable Vector Floating Point Version 5, Single Precision. with 16 registers (fpv5-sp-d16) unit."
TUNE_CCARGS_MFPU .= "${@bb.utils.contains('TUNE_FEATURES', 'vfpv5spd16', 'fpv5-sp-d16', '', d)}"
MARCH_FPU = "${@bb.utils.contains('TUNE_FEATURES', [ 'vfpv5spd16' ], '+fp', '+nofp', d)}"
AVAILTUNES += "armv8m-main armv8m-maine armv8m-main-vfpv5spd16 armv8m-maine-vfpv5spd16"
ARMPKGARCH:tune-armv8m-main = "armv8m-main"
ARMPKGARCH:tune-armv8m-maine = "armv8m-main"

4
meta/conf/machine/include/arm/feature-arm-crc.inc Normal file
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@@ -0,0 +1,4 @@
# Cyclic Redundancy Check (CRC) instructions for armv8-a and armv8-r
TUNEVALID[crc] = "Enable instructions for ARMv8 Cyclic Redundancy Check (CRC)"
TUNE_CCARGS_MARCH_OPTS .= "${@bb.utils.contains('TUNE_FEATURES', 'crc', '+crc', '', d)}"

5
meta/conf/machine/include/arm/feature-arm-crypto.inc Normal file
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@@ -0,0 +1,5 @@
# Cryptographic instructions for:
# armv8-a, armv8.1-a, armv8.3-a, armv8.4-a, armv8.5-a, armv8.6-a, and armv8-r
TUNEVALID[crypto] = "Enable cryptographic instructions for ARMv8"
TUNE_CCARGS_MARCH_OPTS .= "${@bb.utils.contains('TUNE_FEATURES', 'crypto', '+crypto', '', d)}"

2
meta/conf/machine/include/arm/feature-arm-dsp.inc Normal file
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@@ -0,0 +1,2 @@
# Note: TUNEVALID set in conf/machine/include/arm/arch-armv5-dsp.inc
TUNE_CCARGS_MARCH_OPTS .= "${@bb.utils.contains('TUNE_FEATURES', [ 'dsp' ], '+dsp', '', d)}"

5
meta/conf/machine/include/arm/feature-arm-neon.inc
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@@ -19,3 +19,8 @@ TUNE_CCARGS_MFPU .= "${@bb.utils.contains('TUNE_FEATURES', [ 'vfpv4', 'neon' ],
TUNEVALID[vfpv4d16] = "Enable Vector Floating Point Version 4 with 16 registers (vfpv4-d16) unit."
TUNE_CCARGS_MFPU .= "${@bb.utils.contains('TUNE_FEATURES', 'vfpv4d16', ' vfpv4-d16', '', d)}"
TUNEVALID[vfpv5spd16] = "Enable Vector Floating Point Version 5, Single Precision. with 16 registers (fpv5-sp-d16) unit."
TUNE_CCARGS_MFPU .= "${@bb.utils.contains('TUNE_FEATURES', 'vfpv5spd16', 'fpv5-sp-d16', '', d)}"
TUNE_CCARGS_MARCH_OPTS .= "${@bb.utils.contains('TUNE_FEATURES', [ 'vfpv3d16', 'vfpv5spd16' ], '+fp', '', d)}"