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Makefile.inc: Add left shift macro 

Add a macro to shift a value to the left by a specified number of bits.

Change-Id: Ib3fb43b620f31fee2a41f00ddf7294edc81a60f6
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/21601
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
This commit is contained in:
Martin Roth 2017-09-19 13:25:11 -06:00
parent c800d90b34
commit 229e021110
1 changed files with 15 additions and 13 deletions
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Makefile.inc
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@ -118,6 +118,7 @@ $(foreach supported_arch,$(ARCH_SUPPORTED), \
# int-multiply: multiplies an arbitrary length list of integers
# int-divide: divides the first integer by the second
# int-remainder: arithmetic remainder of the first number divided by the second
# int-shift-left: Shift $1 left by $2 bits
# int-lt: 1 if the first value is less than the second. 0 otherwise
# int-gt: 1 if the first values is greater than the second. 0 otherwise
# int-eq: 1 if the two values are equal. 0 otherwise
@ -134,6 +135,7 @@ _int-multiply2=$(shell expr $(call _toint,$1) \* $(call _toint,$2))
int-multiply=$(if $(filter 1,$(words $1)),$(strip $1),$(call int-multiply,$(call _int-multiply2,$(word 1,$1),$(word 2,$1)) $(wordlist 3,$(words $1),$1)))
int-divide=$(if $(filter 1,$(words $1)),$(strip $1),$(shell expr $(call _toint,$(word 1,$1)) / $(call _toint,$(word 2,$1))))
int-remainder=$(if $(filter 1,$(words $1)),$(strip $1),$(shell expr $(call _toint,$(word 1,$1)) % $(call _toint,$(word 2,$1))))
int-shift-left=$(shell echo "$(call _toint,$(word 1, $1)) * (2 ^ $(call _toint,$(word 2, $1)))" | bc)
int-lt=$(if $(filter 1,$(words $1)),$(strip $1),$(shell expr $(call _toint,$(word 1,$1)) \< $(call _toint,$(word 2,$1))))
int-gt=$(if $(filter 1,$(words $1)),$(strip $1),$(shell expr $(call _toint,$(word 1,$1)) \> $(call _toint,$(word 2,$1))))
int-eq=$(if $(filter 1,$(words $1)),$(strip $1),$(shell expr $(call _toint,$(word 1,$1)) = $(call _toint,$(word 2,$1))))