a89262079e
Use of compiler builtin ffs/ctz functions will result in optimized instruction sequences when possible, and fall back to calling a function provided by the compiler run-time library. We have slowly shifted our platforms to take advantage of these builtins in60645781d6(arm64),1c76d3a9fb(arm),9e319462a0(powerpc, partial). Some platforms still rely on the libkern implementations of these functions provided by libkern, namely riscv, powerpc (ffs*, flsll), and i386 (ffsll and flsll). These routines are slow, as they perform a linear search for the bit in question. Even on platforms lacking dedicated bit-search instructions, such as riscv, the compiler library will provide better-optimized routines, e.g. by using binary search. Consolidate all definitions of these functions (whether currently using builtins or not) to libkern.h. This should result in equivalent or better performing routines in all cases. One wart in all of this is the existing HAVE_INLINE_F*** macros, which we use in a few places to conditionally avoid the slow libkern routines. These aren't easily removed in one commit. For now, provide these defines unconditionally, but marked for removal after subsequent cleanup. Removal of the now unused libkern routines will follow in the next commit. Reviewed by: dougm, imp (previous version) Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D40698
177 lines
6.8 KiB
Plaintext
177 lines
6.8 KiB
Plaintext
# This file tells config what files go into building a kernel,
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# files marked standard are always included.
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#
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# $FreeBSD$
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#
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# common files stuff between i386 and amd64
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include "conf/files.x86"
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# The long compile-with and dependency lines are required because of
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# limitations in config: backslash-newline doesn't work in strings, and
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# dependency lines other than the first are silently ignored.
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#
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cddl/dev/dtrace/i386/dtrace_asm.S optional dtrace compile-with "${DTRACE_S}"
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cddl/dev/dtrace/i386/dtrace_subr.c optional dtrace compile-with "${DTRACE_C}"
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crypto/aesni/aeskeys_i386.S optional aesni
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crypto/des/arch/i386/des_enc.S optional netsmb
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crypto/openssl/i386/aesni-x86.S optional ossl
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crypto/openssl/i386/chacha-x86.S optional ossl
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crypto/openssl/i386/poly1305-x86.S optional ossl
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crypto/openssl/i386/sha1-586.S optional ossl
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crypto/openssl/i386/sha256-586.S optional ossl
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crypto/openssl/i386/sha512-586.S optional ossl
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dev/agp/agp_ali.c optional agp
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dev/agp/agp_amd.c optional agp
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dev/agp/agp_amd64.c optional agp
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dev/agp/agp_ati.c optional agp
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dev/agp/agp_i810.c optional agp
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dev/agp/agp_intel.c optional agp
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dev/agp/agp_nvidia.c optional agp
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dev/agp/agp_sis.c optional agp
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dev/agp/agp_via.c optional agp
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dev/glxiic/glxiic.c optional glxiic
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dev/glxsb/glxsb.c optional glxsb
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dev/glxsb/glxsb_hash.c optional glxsb
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dev/hyperv/vmbus/i386/hyperv_machdep.c optional hyperv
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dev/le/if_le_isa.c optional le isa
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dev/nctgpio/nctgpio.c optional nctgpio
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dev/nfe/if_nfe.c optional nfe pci
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dev/ntb/if_ntb/if_ntb.c optional if_ntb
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dev/ntb/ntb_transport.c optional ntb_transport | if_ntb
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dev/ntb/ntb.c optional ntb | ntb_transport | if_ntb | ntb_hw_amd | ntb_hw_intel | ntb_hw_plx | ntb_hw
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dev/ntb/ntb_if.m optional ntb | ntb_transport | if_ntb | ntb_hw_amd | ntb_hw_intel | ntb_hw_plx | ntb_hw
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dev/ntb/ntb_hw/ntb_hw_amd.c optional ntb_hw_amd | ntb_hw
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dev/ntb/ntb_hw/ntb_hw_intel.c optional ntb_hw_intel | ntb_hw
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dev/ntb/ntb_hw/ntb_hw_plx.c optional ntb_hw_plx | ntb_hw
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dev/ntb/test/ntb_tool.c optional ntb_tool
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dev/nvram/nvram.c optional nvram isa
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dev/ofw/ofw_pcib.c optional fdt pci
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dev/pcf/pcf_isa.c optional pcf
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dev/random/ivy.c optional rdrand_rng !random_loadable
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dev/random/nehemiah.c optional padlock_rng !random_loadable
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dev/sbni/if_sbni.c optional sbni
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dev/sbni/if_sbni_isa.c optional sbni isa
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dev/sbni/if_sbni_pci.c optional sbni pci
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dev/speaker/spkr.c optional speaker
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dev/superio/superio.c optional superio isa
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dev/syscons/scvesactl.c optional sc vga vesa
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dev/syscons/scvgarndr.c optional sc vga
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dev/tpm/tpm.c optional tpm
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dev/tpm/tpm_acpi.c optional tpm acpi
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dev/tpm/tpm_isa.c optional tpm isa
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dev/uart/uart_cpu_x86.c optional uart
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dev/viawd/viawd.c optional viawd
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dev/vmd/vmd.c optional vmd
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dev/acpi_support/acpi_wmi_if.m standard
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dev/wbwd/wbwd.c optional wbwd
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dev/wdatwd/wdatwd.c optional wdatwd
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i386/acpica/acpi_machdep.c optional acpi
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i386/acpica/acpi_wakeup.c optional acpi
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acpi_wakecode.o optional acpi \
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dependency "$S/i386/acpica/acpi_wakecode.S assym.inc" \
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compile-with "${NORMAL_S}" \
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no-obj no-implicit-rule before-depend \
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clean "acpi_wakecode.o"
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acpi_wakecode.bin optional acpi \
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dependency "acpi_wakecode.o" \
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compile-with "${OBJCOPY} -S -O binary acpi_wakecode.o ${.TARGET}" \
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no-obj no-implicit-rule before-depend \
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clean "acpi_wakecode.bin"
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acpi_wakecode.h optional acpi \
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dependency "acpi_wakecode.bin" \
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compile-with "file2c -sx 'static char wakecode[] = {' '};' < acpi_wakecode.bin > ${.TARGET}" \
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no-obj no-implicit-rule before-depend \
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clean "acpi_wakecode.h"
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acpi_wakedata.h optional acpi \
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dependency "acpi_wakecode.o" \
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compile-with '${NM} -n --defined-only acpi_wakecode.o | while read offset dummy what; do echo "#define $${what} 0x$${offset}"; done > ${.TARGET}' \
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no-obj no-implicit-rule before-depend \
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clean "acpi_wakedata.h"
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#
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i386/bios/smapi.c optional smapi
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i386/bios/smapi_bios.S optional smapi
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#i386/i386/apic_vector.S optional apic
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i386/i386/bios.c standard
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i386/i386/bioscall.S standard
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i386/i386/bpf_jit_machdep.c optional bpf_jitter
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i386/i386/copyout.c standard
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i386/i386/db_disasm.c optional ddb
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i386/i386/db_interface.c optional ddb
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i386/i386/db_trace.c optional ddb
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i386/i386/exec_machdep.c standard
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i386/i386/elan-mmcr.c optional cpu_elan | cpu_soekris
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i386/i386/elf_machdep.c standard
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i386/i386/exception.S standard
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i386/i386/gdb_machdep.c optional gdb
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i386/i386/geode.c optional cpu_geode
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i386/i386/in_cksum_machdep.c optional inet | inet6
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i386/i386/initcpu.c standard
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i386/i386/io.c optional io
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i386/i386/k6_mem.c optional mem
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i386/i386/locore.S standard no-obj
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i386/i386/longrun.c optional cpu_enable_longrun
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i386/i386/machdep.c standard
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i386/i386/mem.c optional mem
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i386/i386/minidump_machdep.c standard
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i386/i386/minidump_machdep_pae.c standard
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i386/i386/minidump_machdep_nopae.c standard
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i386/i386/mp_clock.c optional smp
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i386/i386/mp_machdep.c optional smp
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i386/i386/mpboot.S optional smp
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i386/i386/npx.c standard
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i386/i386/perfmon.c optional perfmon
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i386/i386/pmap_base.c standard
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i386/i386/pmap_nopae.c standard
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i386/i386/pmap_pae.c standard
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i386/i386/ptrace_machdep.c standard
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i386/i386/sigtramp.S standard
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i386/i386/support.S standard
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i386/i386/swtch.S standard
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i386/i386/sys_machdep.c standard
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i386/i386/trap.c standard
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i386/i386/uio_machdep.c standard
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i386/i386/vm86.c standard
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i386/i386/vm_machdep.c standard
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i386/pci/pci_cfgreg.c optional pci
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i386/pci/pci_pir.c optional pci
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isa/syscons_isa.c optional sc
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isa/vga_isa.c optional vga
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kern/imgact_aout.c optional compat_aout
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kern/subr_sfbuf.c standard
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libkern/divdi3.c standard
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libkern/divmoddi4.c standard
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libkern/memcmp.c standard
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libkern/memset.c standard
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libkern/moddi3.c standard
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libkern/qdivrem.c standard
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libkern/strlen.c standard
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libkern/ucmpdi2.c standard
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libkern/udivdi3.c standard
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libkern/udivmoddi4.c standard
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libkern/umoddi3.c standard
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#
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# x86 real mode BIOS support, required by dpms/pci/vesa
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#
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compat/x86bios/x86bios.c optional x86bios | dpms | pci | vesa
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# Common files where we currently configure the system differently, but perhaps shouldn't
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# config(8) doesn't have a way to force standard options, so we've been inconsistent
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# about marking non-optional things 'standard'.
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x86/acpica/madt.c optional acpi apic
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x86/cpufreq/smist.c optional cpufreq
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x86/isa/atpic.c optional atpic
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x86/isa/elcr.c optional atpic | apic
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x86/isa/isa.c optional isa
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x86/isa/isa_dma.c optional isa
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x86/x86/io_apic.c optional apic
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x86/x86/local_apic.c optional apic
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x86/x86/mptable.c optional apic
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x86/x86/mptable_pci.c optional apic pci
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x86/x86/msi.c optional apic pci
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# Clock calibration subroutine; uses floating-point arithmetic
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subr_clockcalib.o standard \
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dependency "$S/kern/subr_clockcalib.c" \
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compile-with "${CC} -c ${CFLAGS:C/^-O2$/-O3/:N-nostdinc} ${WERROR} -m80387 ${.IMPSRC}" \
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no-implicit-rule \
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clean "subr_clockcalib.o"
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