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 _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
