diff mbox series

[arm-embedded] Add multilib mapping for -mcpu=cortex-m33+nodsp

Message ID ef857d83-4489-edde-fd41-8d100f87326e@foss.arm.com
State New
Headers show
Series [arm-embedded] Add multilib mapping for -mcpu=cortex-m33+nodsp | expand

Commit Message

Thomas Preudhomme March 15, 2018, 10:54 a.m. UTC 
Hi,

Currently -mcpu=cortex-m33+nodsp gets assigned the thumb multilib due to
lack of mapping from -mcpu=cortex-m33+nodsp to an -march option. This
leads to link failures for linking Armv4T Thumb code from the multilib
with Armv8-M Mainline code from the code being compiled.

This patch adds the appropriate mapping.

ChangeLog entry is as follows:

*** gcc/ChangeLog.arm ***

2018-03-14  Thomas Preud'homme  <thomas.preudhomme@arm.com>

	* config/arm/t-rmprofile: Add mapping from -mcpu=cortex-m33+nodsp to
	-march=armv8-m.main.

Testing: A hello world fails to link without the patch with a multilib
build but succeeds with the patch.

We've decided to apply this patch to the ARM/embedded-7-branch branch.

Best regards,

Thomas
diff mbox series

Patch

diff --git a/gcc/config/arm/t-rmprofile b/gcc/config/arm/t-rmprofile
index a3a24d59fb29b42a36177bd2d2ebfae4e50e5a10..54411795215b8aff90ba9cfb806ec7b33db4caea 100644
--- a/gcc/config/arm/t-rmprofile
+++ b/gcc/config/arm/t-rmprofile
@@ -102,6 +102,7 @@  MULTILIB_MATCHES       += march?armv7e-m=mcpu?cortex-m4
 MULTILIB_MATCHES       += march?armv7e-m=mcpu?cortex-m7
 MULTILIB_MATCHES       += march?armv8-m.base=mcpu?cortex-m23
 MULTILIB_MATCHES       += march?armv8-m.main=mcpu?cortex-m33
+MULTILIB_MATCHES       += march?armv8-m.main=mcpu?cortex-m33+nodsp
 MULTILIB_MATCHES       += march?armv7=mcpu?cortex-r4
 MULTILIB_MATCHES       += march?armv7=mcpu?cortex-r4f
 MULTILIB_MATCHES       += march?armv7=mcpu?cortex-r5