mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-11-28 11:50:47 +08:00
libgo: handle linking to NetBSD's versioned symbols
On NetBSD, for backwards compatibility, various libc symbols are
renamed to a symbol with a version suffix. For example, this is the
(abbreviated) definition of sigaction:
int sigaction(...) __asm__ ("__sigaction14")
This poses a challenge for libgo, which attempts to link sigaction by
way of an "//extern" comment:
//extern sigaction
func sigaction(...)
This results in a reference to the deprecated compatibility symbol
"sigaction", rather than the desired "__sigaction14" symbol.
This patch introduces a new "//extern-sysinfo" comment to handle this
situation. The new mklinknames.awk script scans a package for these
comments and outputs a "//go:linkname" directive that links the wrapper
to the correct versioned symbol, as determined by parsing the __asm__
annotation on the function's declaration in gen-sysinfo.go.
For now, only the following packages are scanned by mklinknames.awk:
os
os/user
runtime
syscall
gotools/:
* Makefile.am (check-runtime): Add runtime_linknames.go to
--extrafiles.
* Makefile.in: Regenerate.
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/265125
This commit is contained in:
Nikhil Benesch
Ian Lance Taylor
parent
e93aae4a49
commit
0cdde1e7ae
@ -1,4 +1,4 @@
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88a25df9133e9a1fc28a00b08ee30d7e5ab2cdbb
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ae20684902b82883d3d65f2cde0894c7cb3b995b
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The first line of this file holds the git revision number of the last
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merge done from the gofrontend repository.
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@ -241,14 +241,14 @@ check-runtime: go$(EXEEXT) $(noinst_PROGRAMS) check-head check-gccgo check-gcc
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export LD_LIBRARY_PATH; \
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GOARCH=`$(abs_builddir)/go$(EXEEXT) env GOARCH`; \
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GOOS=`$(abs_builddir)/go$(EXEEXT) env GOOS`; \
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files=`$(SHELL) $(libgosrcdir)/../match.sh --goarch=$${GOARCH} --goos=$${GOOS} --srcdir=$(libgosrcdir)/runtime --extrafiles="$(libgodir)/runtime_sysinfo.go $(libgodir)/sigtab.go" --tag=libffi`; \
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files=`$(SHELL) $(libgosrcdir)/../match.sh --goarch=$${GOARCH} --goos=$${GOOS} --srcdir=$(libgosrcdir)/runtime --extrafiles="$(libgodir)/runtime_linknames.go $(libgodir)/runtime_sysinfo.go $(libgodir)/sigtab.go" --tag=libffi`; \
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echo "$(ECHO_ENV) GC='$(abs_builddir)/check-gccgo -fgo-compiling-runtime' GOARCH=$${GOARCH} GOOS=$${GOOS} $(SHELL) $(libgosrcdir)/../testsuite/gotest --goarch=$${GOARCH} --goos=$${GOOS} --basedir=$(libgosrcdir)/.. --srcdir=$(libgosrcdir)/runtime --pkgpath=runtime --pkgfiles='$${files}' $(GOTESTFLAGS) -test.timeout=$(GOTOOLS_TEST_TIMEOUT)s -test.v" > runtime-testlog
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$(CHECK_ENV) \
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GC="$${GCCGO} -fgo-compiling-runtime"; \
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export GC; \
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GOARCH=`$(abs_builddir)/go$(EXEEXT) env GOARCH`; \
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GOOS=`$(abs_builddir)/go$(EXEEXT) env GOOS`; \
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files=`$(SHELL) $(libgosrcdir)/../match.sh --goarch=$${GOARCH} --goos=$${GOOS} --srcdir=$(libgosrcdir)/runtime --extrafiles="$(libgodir)/runtime_sysinfo.go $(libgodir)/sigtab.go" --tag=libffi`; \
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files=`$(SHELL) $(libgosrcdir)/../match.sh --goarch=$${GOARCH} --goos=$${GOOS} --srcdir=$(libgosrcdir)/runtime --extrafiles="$(libgodir)/runtime_linknames.go $(libgodir)/runtime_sysinfo.go $(libgodir)/sigtab.go" --tag=libffi`; \
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$(SHELL) $(libgosrcdir)/../testsuite/gotest --goarch=$${GOARCH} --goos=$${GOOS} --basedir=$(libgosrcdir)/.. --srcdir=$(libgosrcdir)/runtime --pkgpath=runtime --pkgfiles="$${files}" $(GOTESTFLAGS) -test.timeout=$(GOTOOLS_TEST_TIMEOUT)s -test.v >> runtime-testlog 2>&1 || echo "--- $${fl}: go test runtime (0.00s)" >> runtime-testlog
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grep '^--- ' runtime-testlog | sed -e 's/^--- \(.*\) ([^)]*)$$/\1/' | sort -k 2
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@ -912,14 +912,14 @@ mostlyclean-local:
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@NATIVE_TRUE@ export LD_LIBRARY_PATH; \
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@NATIVE_TRUE@ GOARCH=`$(abs_builddir)/go$(EXEEXT) env GOARCH`; \
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@NATIVE_TRUE@ GOOS=`$(abs_builddir)/go$(EXEEXT) env GOOS`; \
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@NATIVE_TRUE@ files=`$(SHELL) $(libgosrcdir)/../match.sh --goarch=$${GOARCH} --goos=$${GOOS} --srcdir=$(libgosrcdir)/runtime --extrafiles="$(libgodir)/runtime_sysinfo.go $(libgodir)/sigtab.go" --tag=libffi`; \
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@NATIVE_TRUE@ files=`$(SHELL) $(libgosrcdir)/../match.sh --goarch=$${GOARCH} --goos=$${GOOS} --srcdir=$(libgosrcdir)/runtime --extrafiles="$(libgodir)/runtime_linknames.go $(libgodir)/runtime_sysinfo.go $(libgodir)/sigtab.go" --tag=libffi`; \
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@NATIVE_TRUE@ echo "$(ECHO_ENV) GC='$(abs_builddir)/check-gccgo -fgo-compiling-runtime' GOARCH=$${GOARCH} GOOS=$${GOOS} $(SHELL) $(libgosrcdir)/../testsuite/gotest --goarch=$${GOARCH} --goos=$${GOOS} --basedir=$(libgosrcdir)/.. --srcdir=$(libgosrcdir)/runtime --pkgpath=runtime --pkgfiles='$${files}' $(GOTESTFLAGS) -test.timeout=$(GOTOOLS_TEST_TIMEOUT)s -test.v" > runtime-testlog
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@NATIVE_TRUE@ $(CHECK_ENV) \
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@NATIVE_TRUE@ GC="$${GCCGO} -fgo-compiling-runtime"; \
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@NATIVE_TRUE@ export GC; \
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@NATIVE_TRUE@ GOARCH=`$(abs_builddir)/go$(EXEEXT) env GOARCH`; \
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@NATIVE_TRUE@ GOOS=`$(abs_builddir)/go$(EXEEXT) env GOOS`; \
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@NATIVE_TRUE@ files=`$(SHELL) $(libgosrcdir)/../match.sh --goarch=$${GOARCH} --goos=$${GOOS} --srcdir=$(libgosrcdir)/runtime --extrafiles="$(libgodir)/runtime_sysinfo.go $(libgodir)/sigtab.go" --tag=libffi`; \
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@NATIVE_TRUE@ files=`$(SHELL) $(libgosrcdir)/../match.sh --goarch=$${GOARCH} --goos=$${GOOS} --srcdir=$(libgosrcdir)/runtime --extrafiles="$(libgodir)/runtime_linknames.go $(libgodir)/runtime_sysinfo.go $(libgodir)/sigtab.go" --tag=libffi`; \
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@NATIVE_TRUE@ $(SHELL) $(libgosrcdir)/../testsuite/gotest --goarch=$${GOARCH} --goos=$${GOOS} --basedir=$(libgosrcdir)/.. --srcdir=$(libgosrcdir)/runtime --pkgpath=runtime --pkgfiles="$${files}" $(GOTESTFLAGS) -test.timeout=$(GOTOOLS_TEST_TIMEOUT)s -test.v >> runtime-testlog 2>&1 || echo "--- $${fl}: go test runtime (0.00s)" >> runtime-testlog
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@NATIVE_TRUE@ grep '^--- ' runtime-testlog | sed -e 's/^--- \(.*\) ([^)]*)$$/\1/' | sort -k 2
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@ -574,6 +574,48 @@ s-gccgosizes: Makefile goarch.sh
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$(SHELL) $(srcdir)/mvifdiff.sh gccgosizes.go.tmp gccgosizes.go
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$(STAMP) $@
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os_linknames.go: s-os_linknames; @true
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s-os_linknames: os-list gen-sysinfo.go $(srcdir)/mklinknames.awk $(srcdir)/go/os/*.go
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rm -f os_linknames.go.tmp
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$(AWK) -f $(srcdir)/mklinknames.awk -v package=os `cat os-list` > os_linknames.go.tmp
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$(SHELL) $(srcdir)/mvifdiff.sh os_linknames.go.tmp os_linknames.go
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$(STAMP) $@
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os-list: s-os-list; @true
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s-os-list: Makefile $(srcdir)/go/os/*.go
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rm -f os-list.tmp
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$(SHELL) $(srcdir)/match.sh --goarch=$(GOARCH) --goos=$(GOOS) --srcdir=$(srcdir)/go/os > os-list.tmp
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$(SHELL) $(srcdir)/mvifdiff.sh os-list.tmp os-list
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$(STAMP) $@
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os_user_linknames.go: s-os_user_linknames; @true
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s-os_user_linknames: os-user-list gen-sysinfo.go $(srcdir)/mklinknames.awk $(srcdir)/go/os/user/*.go
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rm -f os_user_linknames.go.tmp
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$(AWK) -f $(srcdir)/mklinknames.awk -v package=user `cat os-user-list` > os_user_linknames.go.tmp
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$(SHELL) $(srcdir)/mvifdiff.sh os_user_linknames.go.tmp os_user_linknames.go
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$(STAMP) $@
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os-user-list: s-os-user-list; @true
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s-os-user-list: Makefile $(srcdir)/go/os/user/*.go
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rm -f os-user-list.tmp
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$(SHELL) $(srcdir)/match.sh --goarch=$(GOARCH) --goos=$(GOOS) --srcdir=$(srcdir)/go/os/user > os-user-list.tmp
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$(SHELL) $(srcdir)/mvifdiff.sh os-user-list.tmp os-user-list
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$(STAMP) $@
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runtime_linknames.go: s-runtime_linknames; @true
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s-runtime_linknames: runtime-list gen-sysinfo.go $(srcdir)/mklinknames.awk $(srcdir)/go/runtime/*.go
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rm -f runtime_linknames.go.tmp
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$(AWK) -f $(srcdir)/mklinknames.awk -v package=runtime `cat runtime-list` > runtime_linknames.go.tmp
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$(SHELL) $(srcdir)/mvifdiff.sh runtime_linknames.go.tmp runtime_linknames.go
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$(STAMP) $@
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runtime-list: s-runtime-list; @true
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s-runtime-list: Makefile $(srcdir)/go/runtime/*.go
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rm -f runtime-list.tmp
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$(SHELL) $(srcdir)/match.sh --goarch=$(GOARCH) --goos=$(GOOS) --srcdir=$(srcdir)/go/runtime > runtime-list.tmp
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$(SHELL) $(srcdir)/mvifdiff.sh runtime-list.tmp runtime-list
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$(STAMP) $@
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runtime_sysinfo.go: s-runtime_sysinfo; @true
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s-runtime_sysinfo: $(srcdir)/mkrsysinfo.sh gen-sysinfo.go
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GOARCH=$(GOARCH) GOOS=$(GOOS) $(SHELL) $(srcdir)/mkrsysinfo.sh
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@ -654,6 +696,13 @@ s-syscall_arch: Makefile
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$(SHELL) $(srcdir)/mvifdiff.sh syscall_arch.go.tmp syscall_arch.go
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$(STAMP) $@
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syscall_linknames.go: s-syscall_linknames; @true
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s-syscall_linknames: libcalls.go gen-sysinfo.go $(srcdir)/mklinknames.awk
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rm -f syscall_linknames.go.tmp
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$(AWK) -v package=syscall -f $(srcdir)/mklinknames.awk libcalls.go > syscall_linknames.go.tmp
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$(SHELL) $(srcdir)/mvifdiff.sh syscall_linknames.go.tmp syscall_linknames.go
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$(STAMP) $@
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SYSINFO_FLAGS = \
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$(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
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$(CPPFLAGS) $(OSCFLAGS) -O
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@ -940,8 +989,8 @@ $(foreach package,$(GOTOOL_PACKAGES),$(eval $(call PACKAGE_template,$(package)))
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math_lo_GOCFLAGS = $(MATH_FLAG)
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math_check_GOCFLAGS = $(MATH_FLAG)
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# Add the generated file runtime_sysinfo.go to the runtime package.
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extra_go_files_runtime = runtime_sysinfo.go sigtab.go
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# Add generated files to the runtime package.
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extra_go_files_runtime = runtime_linknames.go runtime_sysinfo.go sigtab.go
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runtime.lo.dep: $(extra_go_files_runtime)
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# Add generated files to the syscall package.
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@ -949,6 +998,7 @@ extra_go_files_syscall = \
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libcalls.go \
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sysinfo.go \
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syscall_arch.go \
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syscall_linknames.go \
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$(syscall_epoll_file)
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syscall.lo.dep: $(extra_go_files_syscall)
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@ -1006,6 +1056,12 @@ cmd/internal/objabi.lo.dep: $(extra_go_files_cmd_internal_objabi)
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extra_go_files_cmd_go_internal_cfg = zdefaultcc.go
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cmd/go/internal/cfg.lo.dep: $(extra_go_files_cmd_go_internal_cfg)
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extra_go_files_os = os_linknames.go
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os.lo.dep: $(extra_go_files_os)
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extra_go_files_os_user = os_user_linknames.go
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os/user.lo.dep: $(extra_go_files_os_user)
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extra_check_libs_cmd_go_internal_cache = $(abs_builddir)/libgotool.a
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extra_check_libs_cmd_go_internal_generate = $(abs_builddir)/libgotool.a
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extra_check_libs_cmd_go_internal_get = $(abs_builddir)/libgotool.a
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@ -1085,14 +1085,15 @@ CHECK_DEPS = $(toolexeclibgo_DATA) $(toolexeclibgoarchive_DATA) \
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math_lo_GOCFLAGS = $(MATH_FLAG)
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math_check_GOCFLAGS = $(MATH_FLAG)
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# Add the generated file runtime_sysinfo.go to the runtime package.
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extra_go_files_runtime = runtime_sysinfo.go sigtab.go
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# Add generated files to the runtime package.
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extra_go_files_runtime = runtime_linknames.go runtime_sysinfo.go sigtab.go
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# Add generated files to the syscall package.
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extra_go_files_syscall = \
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libcalls.go \
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sysinfo.go \
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syscall_arch.go \
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syscall_linknames.go \
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$(syscall_epoll_file)
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@ -1128,6 +1129,8 @@ extra_go_files_internal_goroot = zstdpkglist.go
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extra_go_files_go_types = gccgosizes.go
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extra_go_files_cmd_internal_objabi = objabi.go
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extra_go_files_cmd_go_internal_cfg = zdefaultcc.go
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extra_go_files_os = os_linknames.go
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extra_go_files_os_user = os_user_linknames.go
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extra_check_libs_cmd_go_internal_cache = $(abs_builddir)/libgotool.a
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extra_check_libs_cmd_go_internal_generate = $(abs_builddir)/libgotool.a
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extra_check_libs_cmd_go_internal_get = $(abs_builddir)/libgotool.a
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@ -2748,6 +2751,48 @@ s-gccgosizes: Makefile goarch.sh
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$(SHELL) $(srcdir)/mvifdiff.sh gccgosizes.go.tmp gccgosizes.go
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$(STAMP) $@
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os_linknames.go: s-os_linknames; @true
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s-os_linknames: os-list gen-sysinfo.go $(srcdir)/mklinknames.awk $(srcdir)/go/os/*.go
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rm -f os_linknames.go.tmp
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$(AWK) -f $(srcdir)/mklinknames.awk -v package=os `cat os-list` > os_linknames.go.tmp
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$(SHELL) $(srcdir)/mvifdiff.sh os_linknames.go.tmp os_linknames.go
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$(STAMP) $@
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os-list: s-os-list; @true
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s-os-list: Makefile $(srcdir)/go/os/*.go
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rm -f os-list.tmp
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$(SHELL) $(srcdir)/match.sh --goarch=$(GOARCH) --goos=$(GOOS) --srcdir=$(srcdir)/go/os > os-list.tmp
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$(SHELL) $(srcdir)/mvifdiff.sh os-list.tmp os-list
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$(STAMP) $@
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os_user_linknames.go: s-os_user_linknames; @true
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s-os_user_linknames: os-user-list gen-sysinfo.go $(srcdir)/mklinknames.awk $(srcdir)/go/os/user/*.go
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rm -f os_user_linknames.go.tmp
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$(AWK) -f $(srcdir)/mklinknames.awk -v package=user `cat os-user-list` > os_user_linknames.go.tmp
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$(SHELL) $(srcdir)/mvifdiff.sh os_user_linknames.go.tmp os_user_linknames.go
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$(STAMP) $@
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os-user-list: s-os-user-list; @true
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s-os-user-list: Makefile $(srcdir)/go/os/user/*.go
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rm -f os-user-list.tmp
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$(SHELL) $(srcdir)/match.sh --goarch=$(GOARCH) --goos=$(GOOS) --srcdir=$(srcdir)/go/os/user > os-user-list.tmp
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$(SHELL) $(srcdir)/mvifdiff.sh os-user-list.tmp os-user-list
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$(STAMP) $@
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runtime_linknames.go: s-runtime_linknames; @true
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s-runtime_linknames: runtime-list gen-sysinfo.go $(srcdir)/mklinknames.awk $(srcdir)/go/runtime/*.go
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rm -f runtime_linknames.go.tmp
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$(AWK) -f $(srcdir)/mklinknames.awk -v package=runtime `cat runtime-list` > runtime_linknames.go.tmp
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$(SHELL) $(srcdir)/mvifdiff.sh runtime_linknames.go.tmp runtime_linknames.go
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$(STAMP) $@
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runtime-list: s-runtime-list; @true
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s-runtime-list: Makefile $(srcdir)/go/runtime/*.go
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rm -f runtime-list.tmp
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$(SHELL) $(srcdir)/match.sh --goarch=$(GOARCH) --goos=$(GOOS) --srcdir=$(srcdir)/go/runtime > runtime-list.tmp
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$(SHELL) $(srcdir)/mvifdiff.sh runtime-list.tmp runtime-list
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$(STAMP) $@
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runtime_sysinfo.go: s-runtime_sysinfo; @true
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s-runtime_sysinfo: $(srcdir)/mkrsysinfo.sh gen-sysinfo.go
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GOARCH=$(GOARCH) GOOS=$(GOOS) $(SHELL) $(srcdir)/mkrsysinfo.sh
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@ -2816,6 +2861,13 @@ s-syscall_arch: Makefile
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$(SHELL) $(srcdir)/mvifdiff.sh syscall_arch.go.tmp syscall_arch.go
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$(STAMP) $@
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syscall_linknames.go: s-syscall_linknames; @true
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s-syscall_linknames: libcalls.go gen-sysinfo.go $(srcdir)/mklinknames.awk
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rm -f syscall_linknames.go.tmp
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$(AWK) -v package=syscall -f $(srcdir)/mklinknames.awk libcalls.go > syscall_linknames.go.tmp
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$(SHELL) $(srcdir)/mvifdiff.sh syscall_linknames.go.tmp syscall_linknames.go
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$(STAMP) $@
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gen-sysinfo.go: s-gen-sysinfo; @true
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s-gen-sysinfo: $(srcdir)/sysinfo.c config.h
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$(CC) $(SYSINFO_FLAGS) -fdump-go-spec=tmp-gen-sysinfo.go -std=gnu99 -S -o sysinfo.s $(srcdir)/sysinfo.c
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@ -2918,6 +2970,8 @@ internal/goroot.lo.dep: $(extra_go_files_internal_goroot)
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go/types.lo.dep: $(extra_go_files_go_types)
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cmd/internal/objabi.lo.dep: $(extra_go_files_cmd_internal_objabi)
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cmd/go/internal/cfg.lo.dep: $(extra_go_files_cmd_go_internal_cfg)
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os.lo.dep: $(extra_go_files_os)
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os/user.lo.dep: $(extra_go_files_os_user)
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# FIXME: The following C files may as well move to the runtime
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# directory and be treated like other C files.
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@ -138,6 +138,9 @@
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/* Define to 1 if you have the `logl' function. */
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#undef HAVE_LOGL
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/* Define to 1 if you have the <lwp.h> header file. */
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#undef HAVE_LWP_H
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/* Define to 1 if you have the `matherr' function. */
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#undef HAVE_MATHERR
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2
libgo/configure
vendored
2
libgo/configure
vendored
@ -15202,7 +15202,7 @@ $as_echo "#define HAVE_GETIPINFO 1" >>confdefs.h
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fi
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for ac_header in port.h sched.h semaphore.h sys/file.h sys/mman.h syscall.h sys/epoll.h sys/event.h sys/inotify.h sys/ptrace.h sys/syscall.h sys/sysctl.h sys/user.h sys/utsname.h sys/select.h sys/socket.h net/bpf.h net/if.h net/if_arp.h net/route.h netpacket/packet.h sys/prctl.h sys/mount.h sys/vfs.h sys/statfs.h sys/timex.h sys/sysinfo.h utime.h linux/ether.h linux/fs.h linux/ptrace.h linux/reboot.h netinet/in_syst.h netinet/ip.h netinet/ip_mroute.h netinet/if_ether.h
|
||||
for ac_header in port.h sched.h semaphore.h sys/file.h sys/mman.h syscall.h sys/epoll.h sys/event.h sys/inotify.h sys/ptrace.h sys/syscall.h sys/sysctl.h sys/user.h sys/utsname.h sys/select.h sys/socket.h net/bpf.h net/if.h net/if_arp.h net/route.h netpacket/packet.h sys/prctl.h sys/mount.h sys/vfs.h sys/statfs.h sys/timex.h sys/sysinfo.h utime.h linux/ether.h linux/fs.h linux/ptrace.h linux/reboot.h netinet/in_syst.h netinet/ip.h netinet/ip_mroute.h netinet/if_ether.h lwp.h
|
||||
do :
|
||||
as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
|
||||
ac_fn_c_check_header_mongrel "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default"
|
||||
|
||||
@ -580,7 +580,7 @@ AC_C_BIGENDIAN
|
||||
|
||||
GCC_CHECK_UNWIND_GETIPINFO
|
||||
|
||||
AC_CHECK_HEADERS(port.h sched.h semaphore.h sys/file.h sys/mman.h syscall.h sys/epoll.h sys/event.h sys/inotify.h sys/ptrace.h sys/syscall.h sys/sysctl.h sys/user.h sys/utsname.h sys/select.h sys/socket.h net/bpf.h net/if.h net/if_arp.h net/route.h netpacket/packet.h sys/prctl.h sys/mount.h sys/vfs.h sys/statfs.h sys/timex.h sys/sysinfo.h utime.h linux/ether.h linux/fs.h linux/ptrace.h linux/reboot.h netinet/in_syst.h netinet/ip.h netinet/ip_mroute.h netinet/if_ether.h)
|
||||
AC_CHECK_HEADERS(port.h sched.h semaphore.h sys/file.h sys/mman.h syscall.h sys/epoll.h sys/event.h sys/inotify.h sys/ptrace.h sys/syscall.h sys/sysctl.h sys/user.h sys/utsname.h sys/select.h sys/socket.h net/bpf.h net/if.h net/if_arp.h net/route.h netpacket/packet.h sys/prctl.h sys/mount.h sys/vfs.h sys/statfs.h sys/timex.h sys/sysinfo.h utime.h linux/ether.h linux/fs.h linux/ptrace.h linux/reboot.h netinet/in_syst.h netinet/ip.h netinet/ip_mroute.h netinet/if_ether.h lwp.h)
|
||||
|
||||
AC_CHECK_HEADERS([netinet/icmp6.h], [], [],
|
||||
[#include <netinet/in.h>
|
||||
|
||||
@ -15,5 +15,5 @@ package os
|
||||
|
||||
import "syscall"
|
||||
|
||||
//extern readdir_r
|
||||
//extern-sysinfo readdir_r
|
||||
func libc_readdir_r(*syscall.DIR, *syscall.Dirent, **syscall.Dirent) syscall.Errno
|
||||
|
||||
@ -11,17 +11,17 @@ import "syscall"
|
||||
|
||||
// Declarations for the libc functions on most Unix systems.
|
||||
|
||||
//extern getpwnam_r
|
||||
//extern-sysinfo getpwnam_r
|
||||
func libc_getpwnam_r(name *byte, pwd *syscall.Passwd, buf *byte, buflen syscall.Size_t, result **syscall.Passwd) int
|
||||
|
||||
//extern getpwuid_r
|
||||
//extern-sysinfo getpwuid_r
|
||||
func libc_getpwuid_r(uid syscall.Uid_t, pwd *syscall.Passwd, buf *byte, buflen syscall.Size_t, result **syscall.Passwd) int
|
||||
|
||||
//extern getgrnam_r
|
||||
//extern-sysinfo getgrnam_r
|
||||
func libc_getgrnam_r(name *byte, grp *syscall.Group, buf *byte, buflen syscall.Size_t, result **syscall.Group) int
|
||||
|
||||
//extern getgrgid_r
|
||||
//extern-sysinfo getgrgid_r
|
||||
func libc_getgrgid_r(gid syscall.Gid_t, grp *syscall.Group, buf *byte, buflen syscall.Size_t, result **syscall.Group) int
|
||||
|
||||
//extern getgrouplist
|
||||
//extern-sysinfo getgrouplist
|
||||
func libc_getgrouplist(user *byte, group syscall.Gid_t, groups *syscall.Gid_t, ngroups *int32) int
|
||||
|
||||
@ -13,11 +13,11 @@ import (
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
//extern kqueue
|
||||
//extern-sysinfo kqueue
|
||||
func kqueue() int32
|
||||
|
||||
//go:noescape
|
||||
//extern kevent
|
||||
//extern-sysinfo kevent
|
||||
func kevent(kq int32, ch *keventt, nch uintptr, ev *keventt, nev uintptr, ts *timespec) int32
|
||||
|
||||
var (
|
||||
|
||||
@ -52,7 +52,7 @@ func getRandomData(r []byte) {
|
||||
}
|
||||
|
||||
//go:noescape
|
||||
//extern pipe
|
||||
//extern-sysinfo pipe
|
||||
func libcPipe(*[2]int32) int32
|
||||
|
||||
func pipe() (r, w int32, e int32) {
|
||||
@ -65,7 +65,7 @@ func pipe() (r, w int32, e int32) {
|
||||
}
|
||||
|
||||
//go:noescape
|
||||
//extern pipe2
|
||||
//extern-sysinfo pipe2
|
||||
func libcPipe2(*[2]int32, int32) int32
|
||||
|
||||
func pipe2(flags int32) (r, w int32, e int32) {
|
||||
|
||||
@ -18,19 +18,19 @@ func getProcID() uint64 {
|
||||
return uint64(lwp_self())
|
||||
}
|
||||
|
||||
//extern _lwp_self
|
||||
//extern-sysinfo _lwp_self
|
||||
func lwp_self() int32
|
||||
|
||||
//go:noescape
|
||||
//extern _lwp_park
|
||||
//extern-sysinfo _lwp_park
|
||||
func lwp_park(ts int32, rel int32, abstime *timespec, unpark int32, hint, unparkhint unsafe.Pointer) int32
|
||||
|
||||
//go:noescape
|
||||
//extern _lwp_unpark
|
||||
//extern-sysinfo _lwp_unpark
|
||||
func lwp_unpark(lwp int32, hint unsafe.Pointer) int32
|
||||
|
||||
//go:noescape
|
||||
//extern sysctl
|
||||
//extern-sysinfo sysctl
|
||||
func sysctl(*uint32, uint32, *byte, *uintptr, *byte, uintptr) int32
|
||||
|
||||
func getncpu() int32 {
|
||||
|
||||
@ -14,44 +14,44 @@ import (
|
||||
// these are written in OS-specific files and in assembler.
|
||||
|
||||
//go:noescape
|
||||
//extern sigaction
|
||||
//extern-sysinfo sigaction
|
||||
func sigaction(signum uint32, act *_sigaction, oact *_sigaction) int32
|
||||
|
||||
//go:noescape
|
||||
//extern sigprocmask
|
||||
//extern-sysinfo sigprocmask
|
||||
func sigprocmask(how int32, set *sigset, oldset *sigset) int32
|
||||
|
||||
//go:noescape
|
||||
//extern sigfillset
|
||||
//extern-sysinfo sigfillset
|
||||
func sigfillset(set *sigset) int32
|
||||
|
||||
//go:noescape
|
||||
//extern sigemptyset
|
||||
//extern-sysinfo sigemptyset
|
||||
func sigemptyset(set *sigset) int32
|
||||
|
||||
//go:noescape
|
||||
//extern sigaddset
|
||||
//extern-sysinfo sigaddset
|
||||
func c_sigaddset(set *sigset, signum uint32) int32
|
||||
|
||||
//go:noescape
|
||||
//extern sigdelset
|
||||
//extern-sysinfo sigdelset
|
||||
func c_sigdelset(set *sigset, signum uint32) int32
|
||||
|
||||
//go:noescape
|
||||
//extern sigaltstack
|
||||
//extern-sysinfo sigaltstack
|
||||
func sigaltstack(ss *_stack_t, oss *_stack_t) int32
|
||||
|
||||
//extern raise
|
||||
//extern-sysinfo raise
|
||||
func raise(sig uint32) int32
|
||||
|
||||
//extern getpid
|
||||
//extern-sysinfo getpid
|
||||
func getpid() _pid_t
|
||||
|
||||
//extern kill
|
||||
//extern-sysinfo kill
|
||||
func kill(pid _pid_t, sig uint32) int32
|
||||
|
||||
//go:noescape
|
||||
//extern setitimer
|
||||
//extern-sysinfo setitimer
|
||||
func setitimer(which int32, new *_itimerval, old *_itimerval) int32
|
||||
|
||||
type sigctxt struct {
|
||||
|
||||
@ -17,7 +17,7 @@ func read(fd int32, p unsafe.Pointer, n int32) int32
|
||||
|
||||
func closefd(fd int32) int32
|
||||
|
||||
//extern exit
|
||||
//extern-sysinfo exit
|
||||
func exit(code int32)
|
||||
func usleep(usec uint32)
|
||||
|
||||
|
||||
@ -28,7 +28,7 @@
|
||||
# type, without a name.
|
||||
|
||||
BEGIN {
|
||||
print "// This file was automatically generated by mksyscall.awk"
|
||||
print "// Code generated by mksyscall.awk. DO NOT EDIT."
|
||||
print ""
|
||||
print "package syscall"
|
||||
print ""
|
||||
@ -99,7 +99,7 @@ BEGIN {
|
||||
if (!(cfnname in cfns)) {
|
||||
cfns[cfnname] = 1
|
||||
printf("//go:noescape\n")
|
||||
printf("//extern %s\n", cfnname)
|
||||
printf("//extern-sysinfo %s\n", cfnname)
|
||||
printf("func c_%s(%s) %s\n", cfnname, cfnparams, cfnresult)
|
||||
}
|
||||
printf("func %s(%s) %s%s%s%s{\n",
|
||||
|
||||
46
libgo/mklinknames.awk
Normal file
46
libgo/mklinknames.awk
Normal file
@ -0,0 +1,46 @@
|
||||
# Copyright 2020 The Go Authors. All rights reserved.
|
||||
# Use of this source code is governed by a BSD-style
|
||||
# license that can be found in the LICENSE file.
|
||||
|
||||
# This AWK script reads a Go file with special //extern-sysinfo
|
||||
# comments annotating functions which should be linked to libc
|
||||
# functions. It generates a Go file containing the appropriate
|
||||
# //go:linkname directives.
|
||||
#
|
||||
# For each annotated function, the script searches gen-sysinfo.go
|
||||
# to see if a different assembly name is known for the function.
|
||||
# For example, on NetBSD, the timegm symbol is renamed to
|
||||
# __timegm50 by an __asm__ annotation on its declaration in time.h.
|
||||
|
||||
BEGIN {
|
||||
print "// Code generated by mklinknames.awk. DO NOT EDIT."
|
||||
print ""
|
||||
print "package", package
|
||||
print ""
|
||||
print "import _ \"unsafe\""
|
||||
print ""
|
||||
}
|
||||
|
||||
/^\/\/extern-sysinfo/ {
|
||||
cfnname = $2
|
||||
getline
|
||||
if ($1 != "func") {
|
||||
printf("mklinknames.awk: error: %s:%d: unattached extern-sysinfo directive\n", FILENAME, FNR) | "cat 1>&2"
|
||||
exit 1
|
||||
}
|
||||
split($2, a, "(")
|
||||
gofnname = a[1]
|
||||
def = sprintf("grep '^func _%s[ (]' gen-sysinfo.go", cfnname)
|
||||
# def looks like one of the following:
|
||||
# func _timegm (*_tm) int64 __asm__("__timegm50")
|
||||
# func _timegm (*_tm) int64 __asm__("*__timegm50")
|
||||
# The goal is to extract "__timegm50".
|
||||
if ((def | getline fndef) > 0 && match(fndef, "__asm__\\(\"\\*?")) {
|
||||
asmname = substr(fndef, RSTART + RLENGTH)
|
||||
asmname = substr(asmname, 0, length(asmname) - 2)
|
||||
printf("//go:linkname %s %s\n", gofnname, asmname)
|
||||
} else {
|
||||
# Assume the asm name is the same as the declared C name.
|
||||
printf("//go:linkname %s %s\n", gofnname, cfnname)
|
||||
}
|
||||
}
|
||||
@ -10,6 +10,7 @@
|
||||
#include "config.h"
|
||||
|
||||
#include <stddef.h>
|
||||
#include <stdlib.h>
|
||||
#include <sys/types.h>
|
||||
#include <dirent.h>
|
||||
#include <errno.h>
|
||||
@ -177,6 +178,9 @@
|
||||
#if defined(HAVE_PORT_H)
|
||||
#include <port.h>
|
||||
#endif
|
||||
#if defined(HAVE_LWP_H)
|
||||
#include <lwp.h>
|
||||
#endif
|
||||
|
||||
#ifdef USE_LIBFFI
|
||||
#include "ffi.h"
|
||||
|
||||
Loading…
Reference in New Issue
Block a user