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xtensa: add -mlongcalls to CFLAGS for xtensa

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The longcalls option allows calls across a greater range of addresses.

This option may degrade both code size and performance, but
the linker can generally optimize away the unnecessary overhead
when a call ends up within range

Signed-off-by: Chris Zankel <chris@zankel.net>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Chris Zankel 2012-12-05 19:36:36 +00:00 committed by Peter Korsgaard
parent 36f96dbb78
commit f7ccd30afb
1 changed files with 9 additions and 0 deletions
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9
package/Makefile.in
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@ -56,6 +56,15 @@ TARGET_ABI+=-mabi=spe -mfloat-gprs=double -Wa,-me500mc
endif endif
endif endif
# Use longcalls option for Xtensa globally.
# The 'longcalls' option allows calls across a greater range of addresses,
# and is required for some packages. While this option can degrade both
# code size and performance, the linker can usually optimize away the
# overhead when a call ends up within a certain range.
ifeq ($(BR2_xtensa),y)
TARGET_ABI += -mlongcalls
endif
STAGING_DIR=$(HOST_DIR)/usr/$(GNU_TARGET_NAME)/sysroot STAGING_DIR=$(HOST_DIR)/usr/$(GNU_TARGET_NAME)/sysroot
TARGET_OPTIMIZATION:=$(call qstrip,$(BR2_TARGET_OPTIMIZATION)) TARGET_OPTIMIZATION:=$(call qstrip,$(BR2_TARGET_OPTIMIZATION))