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-rw-r--r--Makefile.inc28
1 files changed, 15 insertions, 13 deletions
diff --git a/Makefile.inc b/Makefile.inc
index 88a9a63ce7..cdebd1be0d 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -113,19 +113,20 @@ $(foreach supported_arch,$(ARCH_SUPPORTED), \
# 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),$1)))
@@ -134,6 +135,7 @@ _int-multiply2=$(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))))