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u-boot/arch/arm/include/asm
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Marek Behún 86c5e21013 ARM: make gd a function call for LTO and set via set_gd() 
On ARM, the gd pointer is stored in registers r9 / x18. For this the
-ffixed-r9 / -ffixed-x18 flag is used when compiling, but using global
register variables causes errors when building with LTO, and these
errors are very difficult to overcome.

Richard Biener says [1]:
  Note that global register vars shouldn't be used with LTO and if they
  are restricted to just a few compilation units the recommended fix is
  to build those CUs without -flto.

We cannot do this for U-Boot since all CUs use -ffixed-reg flag.

It seems that with LTO we could in fact store the gd pointer differently
and gain performance or size benefit by allowing the compiler to use
r9 / x18. But this would need more work.

So for now, when building with LTO, go the clang way, and instead of
declaring gd a global register variable, we make it a function call via
macro.

[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68384

Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-05-24 14:21:30 -04:00
..
arch-am33xx
arm: ti: am33xx: add DPLL_EN_FAST_RELOCK_BYPASS macro
2021-01-12 10:58:04 +05:30
arch-armada8k
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
arch-armada100
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
arch-armv7
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
arch-aspeed
aspeed: Add AST2600 platform support
2021-01-18 15:23:06 -05:00
arch-bcm235xx
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
arch-bcm281xx
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
arch-bcmcygnus
Convert CONFIG_PHYLIB et al to Kconfig
2020-04-28 15:57:58 -04:00
arch-bcmns3
board: ns3: add api to save boot parameters passed from BL31
2020-07-29 10:13:41 -04:00
arch-bcmnsp
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
arch-ep93xx
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
arch-fsl-layerscape
configs: fsl: move bootrom specific defines to Kconfig
2021-03-05 10:25:41 +05:30
arch-hi3660
common: Drop linux/bitops.h from common header
2020-05-18 21:19:23 -04:00
arch-hi3798cv200
poplar: clean up board level mmc initialization code
2019-01-25 12:12:57 -05:00
arch-hi6220
dm: treewide: Rename ..._platdata variables to just ..._plat
2020-12-13 16:51:09 -07:00
arch-imx
mx6dq: hab: Fix chip version in hab.h code
2021-04-08 09:18:29 +02:00
arch-imx8
imx8: Add DEK blob encapsulation
2021-04-08 20:29:52 +02:00
arch-imx8m
iMX8M: Add support to enable CONFIG_IMX_HAB
2021-04-08 09:18:29 +02:00
arch-imxrt
video: mxsfb: add support for i.MXRT
2020-04-18 12:54:43 +02:00
arch-lpc32xx
dm: i2c: use CONFIG_IS_ENABLED macro for DM_I2C/DM_I2C_GPIO
2021-02-21 06:08:00 +01:00
arch-ls102xa
gpio: mpc8xxx_gpio: Fix for litte endian
2021-02-08 14:01:19 +05:30
arch-mediatek
mediatek: Drop dm.h header file
2020-08-03 22:19:54 -04:00
arch-meson
arm: meson: remove static ethernet link setup
2021-04-06 11:10:29 +02:00
arch-mvebu
km/spi: remove deprecated SPI flash driver code for KM Kirkwood boards
2019-07-11 10:58:03 +02:00
arch-mx5
spi: imx: Define register bits in the driver
2021-01-23 13:40:29 +01:00
arch-mx6
imx: imx6ull: fix pinmux sel_input value for uart5 pins
2021-04-08 23:59:50 +02:00
arch-mx7
spi: imx: Define register bits in the driver
2021-01-23 13:40:29 +01:00
arch-mx7ulp
caam: enable support for iMX7ULP
2021-04-08 09:18:29 +02:00
arch-mx25
spi: imx: Define register bits in the driver
2021-01-23 13:40:29 +01:00
arch-mx27
treewide: convert bd_t to struct bd_info by coccinelle
2020-07-17 09:30:13 -04:00
arch-mx31
spi: imx: Define register bits in the driver
2021-01-23 13:40:29 +01:00
arch-mx35
spi: imx: Define register bits in the driver
2021-01-23 13:40:29 +01:00
arch-mxs
treewide: convert bd_t to struct bd_info by coccinelle
2020-07-17 09:30:13 -04:00
arch-octeontx
arm: octeontx: Add headers for OcteonTX
2020-08-25 08:01:16 +02:00
arch-octeontx2
arm: octeontx2: Add headers for OcteonTX2
2020-08-25 08:01:16 +02:00
arch-omap3
i2c: omap24xx_i2c: Move away from SoC specific headers for reg offset
2018-12-10 06:09:34 +01:00
arch-omap4
arm: Don't include common.h in header files
2020-05-18 14:54:24 -04:00
arch-omap5
arm: Don't include common.h in header files
2020-05-18 14:54:24 -04:00
arch-orion5x
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
arch-owl
net: designware: s700: Add glue code for S700 mac
2020-07-07 17:11:58 -04:00
arch-px30
rockchip: add px30 architecture core
2019-11-17 17:23:24 +08:00
arch-pxa
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
arch-rk322x
rockchip: add common header boot0.h and gpio.h for soc
2019-05-08 17:34:12 +08:00
arch-rk3036
rockchip: add common header boot0.h and gpio.h for soc
2019-05-08 17:34:12 +08:00
arch-rk3128
rockchip: add common header boot0.h and gpio.h for soc
2019-05-08 17:34:12 +08:00
arch-rk3188
rockchip: add common header boot0.h and gpio.h for soc
2019-05-08 17:34:12 +08:00
arch-rk3288
rockchip: add common header boot0.h and gpio.h for soc
2019-05-08 17:34:12 +08:00
arch-rk3308
arm: Don't include common.h in header files
2020-05-18 14:54:24 -04:00
arch-rk3328
rockchip: add common header boot0.h and gpio.h for soc
2019-05-08 17:34:12 +08:00
arch-rk3368
rockchip: add common header boot0.h and gpio.h for soc
2019-05-08 17:34:12 +08:00
arch-rk3399
rockchip: add common header boot0.h and gpio.h for soc
2019-05-08 17:34:12 +08:00
arch-rockchip
Rockchip: video: edp: Change interrupt polarity configuration
2021-04-10 11:52:43 +02:00
arch-rv1108
rockchip: add common header boot0.h and gpio.h for soc
2019-05-08 17:34:12 +08:00
arch-sa1100
…
arch-spear
arm: spear: fix enabling of SSP2 clock
2018-09-25 21:49:18 -04:00
arch-stih410
treewide: Update email address Patrick Delaunay and Patrice Chotard
2020-12-09 10:57:50 +01:00
arch-stm32
treewide: Update email address Patrick Delaunay and Patrice Chotard
2020-12-09 10:57:50 +01:00
arch-stm32f4
treewide: Update email address Patrick Delaunay and Patrice Chotard
2020-12-09 10:57:50 +01:00
arch-stm32f7
treewide: Update email address Patrick Delaunay and Patrice Chotard
2020-12-09 10:57:50 +01:00
arch-stm32h7
treewide: Update email address Patrick Delaunay and Patrice Chotard
2020-12-09 10:57:50 +01:00
arch-stv0991
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
arch-sunxi
sunxi: support asymmetric dual rank DRAM on A64/R40
2021-04-16 01:12:58 +01:00
arch-tegra
common: Drop asm/global_data.h from common header
2021-02-02 15:33:42 -05:00
arch-tegra20
ARM: tegra: Use common header for PMU declarations
2019-06-05 09:16:33 -07:00
arch-tegra30
ARM: tegra: Use common header for PMU declarations
2019-06-05 09:16:33 -07:00
arch-tegra114
ARM: tegra: Use common header for PMU declarations
2019-06-05 09:16:33 -07:00
arch-tegra124
common: Drop linux/bitops.h from common header
2020-05-18 21:19:23 -04:00
arch-tegra186
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
arch-tegra210
ARM: tegra: Use common header for PMU declarations
2019-06-05 09:16:33 -07:00
arch-vf610
dm: treewide: Rename ..._platdata variables to just ..._plat
2020-12-13 16:51:09 -07:00
armv8
common: Move hang() to the same header as panic()
2020-01-17 17:53:40 -05:00
iproc-common
configs: migrate CONFIG_SYS_ARM_CACHE_* in Kconfig
2020-05-01 11:34:01 -04:00
kona-common
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
mach-imx
mx6dq: hab: Fix chip version in hab.h code
2021-04-08 09:18:29 +02:00
proc-armv
ARM: correct detection of thumb mode
2019-07-18 11:31:24 -04:00
ti-common
common: Drop asm/global_data.h from common header
2021-02-02 15:33:42 -05:00
xen
Revert "arch: arm/xen: add putc() for debugging"
2020-10-23 09:16:07 -04:00
acpi_table.h
acpi: Add missing ARM acpi_table header
2021-01-18 15:14:15 -05:00
armv7_mpu.h
common: Drop linux/bitops.h from common header
2020-05-18 21:19:23 -04:00
armv7.h
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
armv7m.h
arm: armv7m: clean up armv7m unified code compilation
2018-09-10 21:19:33 -04:00
assembler.h
arm: Migrate SYS_THUMB_BUILD to Kconfig, introduce SPL_SYS_THUMB_BUILD
2017-03-18 20:28:01 -04:00
atomic.h
ARM: use asm-generic/atomic.h
2018-09-25 21:49:18 -04:00
barriers.h
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
bitops.h
common: Drop linux/bitops.h from common header
2020-05-18 21:19:23 -04:00
boot0-linux-kernel-header.h
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
bootm.h
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
byteorder.h
…
cache.h
arm: cp15: remove weak function arm_init_domains
2021-03-02 15:53:37 -05:00
config.h
lmb: move CONFIG_LMB in Kconfig
2021-04-22 14:09:45 -04:00
davinci_rtc.h
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
dma-mapping.h
arm: Don't include common.h in header files
2020-05-18 14:54:24 -04:00
ehci-omap.h
usb: ehci-omap: Add Support for DM_USB and OF_CONTROL
2020-05-22 15:22:35 +02:00
emif.h
arm: Don't include common.h in header files
2020-05-18 14:54:24 -04:00
fsl_secure_boot.h
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
gic-v3.h
arch: arm: use dt and UCLASS_SYSCON to get gic lpi details
2020-07-29 10:37:11 -04:00
gic.h
…
global_data.h
ARM: make gd a function call for LTO and set via set_gd()
2021-05-24 14:21:30 -04:00
gpio.h
gpio: do not include <asm/arch/gpio.h> on ARCH_QEMU
2021-01-18 15:14:15 -05:00
handoff.h
arm: Add arm handoff header file
2020-01-24 11:19:52 -05:00
hardware.h
…
io.h
arm: include/asm/io.h: Add 64bit clrbits and setbits helpers
2020-08-25 08:01:16 +02:00
linkage.h
…
mach-types.h
mcx: remove board
2019-05-28 13:58:06 -04:00
macro.h
ARMv8: Enable all asynchronous abort exceptions taken to EL3
2018-11-16 13:34:33 -05:00
memory.h
Various, accumulated typos collected from around the tree.
2016-10-06 20:57:40 -04:00
mmu.h
arm: provide a function for boards init code to modify MMU virtual-physical map
2020-07-10 14:10:43 -04:00
omap_common.h
arm: Don't include common.h in header files
2020-05-18 14:54:24 -04:00
omap_gpio.h
dm: treewide: Rename ..._platdata variables to just ..._plat
2020-12-13 16:51:09 -07:00
omap_i2c.h
dm: i2c: use CONFIG_IS_ENABLED macro for DM_I2C/DM_I2C_GPIO
2021-02-21 06:08:00 +01:00
omap_mmc.h
common: Drop linux/bitops.h from common header
2020-05-18 21:19:23 -04:00
omap_musb.h
dm: treewide: Rename ..._platdata variables to just ..._plat
2020-12-13 16:51:09 -07:00
omap_sec_common.h
arm: Don't include common.h in header files
2020-05-18 14:54:24 -04:00
opcodes-sec.h
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
opcodes-virt.h
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
opcodes.h
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
pl310.h
ARM: pl310: Add macro's for handling tag and data latency mask
2019-05-05 08:48:50 -04:00
posix_types.h
…
processor.h
…
psci.h
common: Drop linux/bitops.h from common header
2020-05-18 21:19:23 -04:00
ptrace.h
…
sections.h
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
secure.h
treewide: Convert macro and uses of __section(foo) to __section("foo")
2021-05-24 14:21:30 -04:00
setjmp.h
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
setup.h
treewide: Convert macro and uses of __section(foo) to __section("foo")
2021-05-24 14:21:30 -04:00
spin_table.h
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
spl.h
arm: K3: am654: Add support for boot device detection
2018-09-11 08:32:55 -04:00
string.h
ARM: revive CONFIG_USE_ARCH_MEMCPY/MEMSET for UniPhier and Tegra
2016-12-27 11:24:15 -05:00
system.h
arm: remove set_dacr/get_dacr functions
2021-03-02 15:53:37 -05:00
types.h
arch: types.h: factor out fixed width typedefs to int-ll64.h
2018-09-10 20:48:16 -04:00
u-boot-arm.h
common: Move reset_misc() function to arch header
2020-01-17 13:27:30 -05:00
u-boot.h
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
unaligned.h
…
unified.h
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
utils.h
SPDX: Convert all of our single license tags to Linux Kernel style
2018-05-07 09:34:12 -04:00
xen.h
board: Introduce xenguest_arm64 board
2020-08-14 15:18:27 -04:00