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arm: use -march when compiling m5op_arm.S

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Using arm-linux-gnueabi-gcc 4.7.3-1ubuntu1 on Ubuntu 13.04 to compiled
the m5 binary yields the error:

m5op_arm.S: Assembler messages:
m5op_arm.S:85: Error: selected processor does not support ARM mode `bxj lr'

For each of of the SIMPLE_OPs. Apparently, this compiler doesn't like the
interworking of these code types for the default arch. Adding -march=armv7-a
makes it compile. Another alternative that I found to work is replacing the
bxj lr instruction with mov pc, lr, but I don't know how that affects the
KVM stuff and if bxj is needed.
This commit is contained in:
Anthony Gutierrez 2013-08-14 10:51:47 -04:00
parent 95381f8a99
commit cf56619b0c
1 changed files with 2 additions and 2 deletions
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4
util/m5/Makefile.arm
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@ -39,7 +39,7 @@
# Authors: Nathan Binkert
# Ali Saidi
### If we are not compiling on an arm, we must use cross tools ###
### If we are not compiling on an arm, we must use cross tools ###
ifneq ($(shell uname -m), armv7l)
CROSS_COMPILE?=arm-linux-gnueabi-
endif
@ -54,7 +54,7 @@ JR=jar
### JDK_PATH must be set to build gem5OpJni
#JDK_PATH=/path/to/jdk/version_number
CFLAGS=-O2 -I $(JDK_PATH)/include/ -I $(JDK_PATH)/include/linux
CFLAGS=-O2 -I $(JDK_PATH)/include/ -I $(JDK_PATH)/include/linux -march=armv7-a
LDFLAGS=-L. -lm5
LIB_OBJS=m5op_arm.o