Enable 'C'-compressed ISA extension.
This was disabled recently due to lack of support in KDB disassembler and DTrace FBT provider. Support for 'C'-extension to both of these was added, so we can now enable 'C'-extension. This reduces size of the kernel important for low-end embedded devices, and saves cache footprint for high perfomance machines. Approved by: re (kib) Sponsored by: DARPA, AFRL
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@ -367,9 +367,9 @@ CFLAGS += -mcpu=8540 -Wa,-me500 -mspe=yes -mabi=spe -mfloat-gprs=double
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.if ${MACHINE_CPUARCH} == "riscv"
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.if ${MACHINE_ARCH:Mriscv*sf}
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CFLAGS += -march=rv64ima -mabi=lp64
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CFLAGS += -march=rv64imac -mabi=lp64
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.else
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CFLAGS += -march=rv64imafd -mabi=lp64d
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CFLAGS += -march=rv64imafdc -mabi=lp64d
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.endif
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.endif
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@ -108,7 +108,7 @@ CFLAGS+= -ffreestanding ${CFLAGS_NO_SIMD}
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.if ${MACHINE_CPUARCH} == "aarch64"
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CFLAGS+= -mgeneral-regs-only -fPIC
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.elif ${MACHINE_CPUARCH} == "riscv"
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CFLAGS+= -march=rv64ima -mabi=lp64
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CFLAGS+= -march=rv64imac -mabi=lp64
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.else
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CFLAGS+= -msoft-float
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.endif
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@ -131,7 +131,7 @@ INLINE_LIMIT?= 8000
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.endif
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.if ${MACHINE_CPUARCH} == "riscv"
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CFLAGS.gcc+= -mcmodel=medany -march=rv64imafd -mabi=lp64
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CFLAGS.gcc+= -mcmodel=medany -march=rv64imafdc -mabi=lp64
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INLINE_LIMIT?= 8000
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.endif
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