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This patch adds explicit references to various types and constants
defined by the header files included by sysinfo.c (used to drive the
generation of gen-sysinfo.go as part of the libgo build via the GCC
"-fdump-go-spec" option).
The intent is to enable clients to gather the same info generated by
"-fdump-go-spec" by instead reading the generated DWARF from a
sysinfo.o object file compiled with "-g". Some compilers (notably
clang) try to omit DWARF records for a given type unless there is an
explicit use of it in the translation unit; the additional references
are to insure that everything we want to see in the DWARF shows up.
Reviewed-on: https://go-review.googlesource.com/99063
From-SVN: r259868
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PR go/81324
sysinfo.c: ignore ptrace_peeksiginfo_args from <linux/ptrace.h>
With some versions of glibc and GNU/Linux ptrace_pseeksiginfo_args is
defined in both <sys/ptrace.h> and <linux/ptrace.h>. We don't actually
care about the struct, so use a #define to avoid a redefinition error.
This fixes https://gcc.gnu.org/PR81324.
Reviewed-on: https://go-review.googlesource.com/49290
From-SVN: r250324
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Avoid https://sourceware.org/bugzilla/show_bug.cgi?id=762.
Patch by Andreas Schwab.
Reviewed-on: https://go-review.googlesource.com/46711
From-SVN: r249662
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On MIPS, the correct structure for PtraceRegs is 'struct pt_regs' which
is declared in linux/ptrace.h. Previously no PtraceRegs structure was
created on MIPS because 'struct user_regs_struct' doesn't exist there.
Fallback to using pt_regs when the PtraceRegs structure is generated in
mksysinfo.sh, then adjust syscall_linux_mipsx.go to read the program
counter from the correct field.
In addition, implement PtraceGetRegs and PtraceSetRegs on all 3 ABI
variants.
syscall_linux_mips64x.go can now be removed since the ptrace code on
all 3 ABIs is identical.
Reviewed-on: https://go-review.googlesource.com/46150
From-SVN: r249472
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As we move toward the Go 1.7 garbage collector, it's essential that all
allocation of values that can contain Go pointers be done using the
correct type descriptor. That is simplest if we do all such allocation
in Go code. This rewrites the code that converts from a Go type to a
libffi CIF into Go.
Reviewed-on: https://go-review.googlesource.com/33353
From-SVN: r242578
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Reviewed-on: https://go-review.googlesource.com/31325
From-SVN: r241307
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Remove the old locking code written in C.
Add a shell script mkrsysinfo.sh to generate the runtime_sysinfo.go
file, so that we can get Go copies of the system time structures and
other types.
Tweak the compiler so that when compiling the runtime package the
address operator does not cause local variables to escape. When the gc
compiler compiles the runtime, an escaping local variable is treated as
an error. We should implement that, instead of this change, when escape
analysis is turned on.
Tweak the compiler so that the generated C header does not include names
that start with an underscore followed by a non-upper-case letter,
except for the special cases of _defer and _panic. Otherwise we
translate C types to Go in runtime_sysinfo.go and then generate those Go
types back as C types in runtime.inc, which is useless and painful for
the C code.
Change entersyscall and friends to take a dummy argument, as the gc
versions do, to simplify calls from the shared code.
Reviewed-on: https://go-review.googlesource.com/30079
From-SVN: r240657
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This is a step toward a version of mksysinfo that generates information
for the runtime package. This will be used to generate the
runtime_sysinfo.go file, which is currently directly generated by a
Makefile target.
Reviewed-on: https://go-review.googlesource.com/29683
From-SVN: r240560
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