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>
diff --git a/Makefile.inc b/Makefile.inc
index 88a9a63..cdebd1b 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -113,19 +113,20 @@
# macros work on all formats understood by printf(1)
# values are space separated if using more than one value
#
-# int-add: adds an arbitrary length list of integers
-# int-subtract: subtracts the the second of two integers from the first
-# 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-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
-# int-align: align $1 to $2 units
-# file-size: returns the filesize of the given file
-# tolower: returns the value in all lowercase
-# toupper: returns the value in all uppercase
-# ws_to_under: returns the value with any whitespace changed to underscores
+# int-add: adds an arbitrary length list of integers
+# int-subtract: subtracts the the second of two integers from the first
+# 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
+# int-align: align $1 to $2 units
+# file-size: returns the filesize of the given file
+# tolower: returns the value in all lowercase
+# toupper: returns the value in all uppercase
+# ws_to_under: returns the value with any whitespace changed to underscores
_toint=$(shell printf "%d" $1)
_int-add2=$(shell expr $(call _toint,$1) + $(call _toint,$2))
int-add=$(if $(filter 1,$(words $1)),$(strip $1),$(call int-add,$(call _int-add2,$(word 1,$1),$(word 2,$1)) $(wordlist 3,$(words $1),$1)))
@@ -134,6 +135,7 @@
int-multiply=$(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))))