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587a1290a1
For CPU implementations that can perform unaligned accesses with little or no performance penalty, create a memcpy implementation that does not bother aligning buffers. It will use a block of integer registers, a single integer register, and fall back to bytewise copy for the remainder. Signed-off-by: Evan Green <evan@rivosinc.com> Reviewed-by: Palmer Dabbelt <palmer@rivosinc.com> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
36 lines
846 B
Makefile
36 lines
846 B
Makefile
ifeq ($(subdir),misc)
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sysdep_headers += \
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sys/cachectl.h \
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sys/hwprobe.h \
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# sysdep_headers
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sysdep_routines += \
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flush-icache \
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hwprobe \
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# sysdep_routines
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endif
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ifeq ($(subdir),stdlib)
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gen-as-const-headers += ucontext_i.sym
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endif
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ifeq ($(subdir),string)
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sysdep_routines += \
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memcpy \
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memcpy-generic \
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memcpy_noalignment \
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# sysdep_routines
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endif
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abi-variants := ilp32 ilp32d lp64 lp64d
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ifeq (,$(filter $(default-abi),$(abi-variants)))
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$(error Unknown ABI $(default-abi), must be one of $(abi-variants))
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endif
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abi-ilp32-condition := __WORDSIZE == 32 && defined __riscv_float_abi_soft
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abi-ilp32d-condition := __WORDSIZE == 32 && defined __riscv_float_abi_double
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abi-lp64-condition := __WORDSIZE == 64 && defined __riscv_float_abi_soft
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abi-lp64d-condition := __WORDSIZE == 64 && defined __riscv_float_abi_double
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