Ian Lance Taylor f0d89c7759 runtime: avoid write barriers with traceback info ... Unlike the gc runtime, libgo stores traceback information in location structs, which contain strings. Therefore, copying location structs around appears to require write barriers, although in fact write barriers are never important because the strings are never allocated in Go memory. They come from libbacktrace. Some of the generated write barriers come at times when write barriers are not permitted. For example, exitsyscall, marked nowritebarrierrec, calls exitsyscallfast which calls traceGoSysExit which calls traceEvent which calls traceStackID which calls trace.stackTab.put which copies location values into memory allocated by tab.newStack. This write barrier can be invoked when there is no p, causing a crash. This change fixes the problem by ensuring that location values are copied around in the tracing code with no write barriers. This was found by fixing the compiler to fully implement //go:nowritebarrierrec; CL to follow. Reviewed-on: https://go-review.googlesource.com/134226 From-SVN: r264282		2018-09-13 17:30:00 +00:00
..
aeshash.c	re PR go/78789 (Error: no such instruction: `aesenc %xmm0,%xmm2' when compiling libgo/runtime/aeshash.c)	2017-01-03 20:41:54 +00:00
arch.h
array.h
defs.h
env_posix.c	Big merge of changes to gofrontend repo that were postponed due to the	2017-05-10 17:26:09 +00:00
getncpu-aix.c	Big merge of changes to gofrontend repo that were postponed due to the	2017-05-10 17:26:09 +00:00
getncpu-bsd.c
getncpu-irix.c
getncpu-linux.c
getncpu-none.c
getncpu-solaris.c
go-assert.c
go-assert.h
go-caller.c	runtime: don't stat a NULL filename	2018-06-28 20:54:04 +00:00
go-callers.c	runtime: funcfileline: get missing function name from symbol table	2018-02-22 18:52:33 +00:00
go-cdiv.c
go-cgo.c	runtime: copy cgo support from Go 1.7 runtime	2016-12-19 18:00:35 +00:00
go-construct-map.c	runtime: fix makemap calls in __go_construct_map	2018-01-10 15:04:21 +00:00
go-ffi.c	runtime, reflect: rewrite Go to FFI type conversion in Go	2016-11-18 00:15:38 +00:00
go-fieldtrack.c	runtime: fix type descriptor name in C code	2018-01-31 18:25:17 +00:00
go-libmain.c	re PR go/81451 (missing futex check - libgo/runtime/thread-linux.c:12:0 futex.h:13:12: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘long’)	2017-07-18 23:14:29 +00:00
go-main.c	re PR go/81451 (missing futex check - libgo/runtime/thread-linux.c:12:0 futex.h:13:12: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘long’)	2017-07-18 23:14:29 +00:00
go-matherr.c
go-memclr.c	libgo: update to Go 1.8 release candidate 1	2017-01-14 00:05:42 +00:00
go-memcmp.c
go-memequal.c	compiler, runtime: replace hashmap code with Go 1.7 hashmap	2016-09-21 20:58:51 +00:00
go-memmove.c	compiler, runtime: replace hashmap code with Go 1.7 hashmap	2016-09-21 20:58:51 +00:00
go-nanotime.c	runtime: copy runtime package time code from Go 1.7	2016-10-15 00:29:06 +00:00
go-nosys.c	runtime: make go-nosys.c compile with !HAVE_SYSCALL	2017-08-29 20:57:20 +00:00
go-now.c	re PR c/82922 (Request: add -Wstrict-prototypes to -Wextra as K&R style is obsolescent)	2018-01-10 15:42:23 +00:00
go-reflect-call.c	runtime: remove __go_alloc and __go_free	2017-01-03 22:58:48 +00:00
go-runtime-error.c	re PR c/82922 (Request: add -Wstrict-prototypes to -Wextra as K&R style is obsolescent)	2018-01-10 15:42:23 +00:00
go-setenv.c	runtime: don't call __go_alloc/__go_free in environment functions	2016-11-18 16:03:13 +00:00
go-signal.c	re PR go/81893 (compilation error in libgo starting with r251127)	2017-08-18 20:17:26 +00:00
go-string.h
go-strslice.c	runtime: always initialize str field in __go_string_slice result	2017-09-18 22:29:45 +00:00
go-type.h	Big merge of changes to gofrontend repo that were postponed due to the	2017-05-10 17:26:09 +00:00
go-typedesc-equal.c	re PR go/65755 (incorrect reflection of struct fields with gccgo)	2015-04-17 18:19:44 +00:00
go-unsafe-pointer.c	compiler: rationalize external symbol names	2018-01-24 23:50:09 +00:00
go-unsetenv.c	runtime: don't call __go_alloc/__go_free in environment functions	2016-11-18 16:03:13 +00:00
go-unwind.c	libgo: fix for unaligned read in go-unwind.c's read_encoded_value()	2018-05-04 14:29:05 +00:00
go-varargs.c	libgo: Solaris portability fixes.	2015-11-06 19:15:45 +00:00
panic.c	Big merge of changes to gofrontend repo that were postponed due to the	2017-05-10 17:26:09 +00:00
print.c	runtime: copy print/println support from Go 1.7	2016-10-10 23:13:39 +00:00
proc.c	runtime: avoid write barriers with traceback info	2018-09-13 17:30:00 +00:00
rtems-task-variable-add.c
runtime_c.c	runtime: use a fence instruction before rdtsc	2018-03-07 14:31:03 +00:00
runtime.h	runtime: remove the dummy arg of getcallersp	2018-08-24 18:15:04 +00:00
stack.c	runtime: scan register backing store on ia64	2018-02-02 00:16:43 +00:00
thread.c
yield.c	runtime: copy signal code from Go 1.7 runtime	2016-11-10 22:53:23 +00:00