svn commit: r336716 - in head: share/mk stand sys/conf
Ruslan Bukin
br at FreeBSD.org
Wed Jul 25 16:07:37 UTC 2018
Author: br
Date: Wed Jul 25 16:07:35 2018
New Revision: 336716
URL: https://svnweb.freebsd.org/changeset/base/336716
Log:
Disable 'C'-compressed ISA extension.
It works excellent, but KDB disassembler and DTrace FBT provider for
RISC-V do lack support for it. They currently handle 4-byte instructions
only, while C-compressed ISA extension introduces 2-byte instructions
freely mixing them together.
So disable it for now.
Reviewed by: markj@
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D16436
Modified:
head/share/mk/bsd.cpu.mk
head/stand/defs.mk
head/sys/conf/kern.mk
Modified: head/share/mk/bsd.cpu.mk
==============================================================================
--- head/share/mk/bsd.cpu.mk Wed Jul 25 16:00:48 2018 (r336715)
+++ head/share/mk/bsd.cpu.mk Wed Jul 25 16:07:35 2018 (r336716)
@@ -367,9 +367,9 @@ CFLAGS += -mcpu=8540 -Wa,-me500 -mspe=yes -mabi=spe -m
.if ${MACHINE_CPUARCH} == "riscv"
.if ${MACHINE_ARCH:Mriscv*sf}
-CFLAGS += -march=rv64imac -mabi=lp64
+CFLAGS += -march=rv64ima -mabi=lp64
.else
-CFLAGS += -march=rv64imafdc -mabi=lp64d
+CFLAGS += -march=rv64imafd -mabi=lp64d
.endif
.endif
Modified: head/stand/defs.mk
==============================================================================
--- head/stand/defs.mk Wed Jul 25 16:00:48 2018 (r336715)
+++ head/stand/defs.mk Wed Jul 25 16:07:35 2018 (r336716)
@@ -103,7 +103,7 @@ CFLAGS+= -ffreestanding ${CFLAGS_NO_SIMD}
.if ${MACHINE_CPUARCH} == "aarch64"
CFLAGS+= -mgeneral-regs-only -fPIC
.elif ${MACHINE_CPUARCH} == "riscv"
-CFLAGS+= -march=rv64imac -mabi=lp64
+CFLAGS+= -march=rv64ima -mabi=lp64
.else
CFLAGS+= -msoft-float
.endif
Modified: head/sys/conf/kern.mk
==============================================================================
--- head/sys/conf/kern.mk Wed Jul 25 16:00:48 2018 (r336715)
+++ head/sys/conf/kern.mk Wed Jul 25 16:07:35 2018 (r336716)
@@ -131,7 +131,7 @@ INLINE_LIMIT?= 8000
.endif
.if ${MACHINE_CPUARCH} == "riscv"
-CFLAGS.gcc+= -mcmodel=medany -march=rv64imafdc -mabi=lp64
+CFLAGS.gcc+= -mcmodel=medany -march=rv64imafd -mabi=lp64
INLINE_LIMIT?= 8000
.endif
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