Stowage/go
2
0
Fork 0
mirror of https://github.com/golang/go.git synced 2025-12-08 06:10:04 +00:00
Code Issues Projects Releases Packages Wiki Activity

cmd/cgo, runtime, runtime/cgo: use cgo context function

Browse source 
Add support for the context function set by runtime.SetCgoTraceback.
The context function was added in CL 17761, without support.
This CL is the support.

This CL has not been tested for real C code, as a working context
function for C code requires unwind support that does not seem to exist.
I wanted to get the CL out before the freeze.

I apologize for the length of this CL.  It's mostly plumbing, but
unfortunately the plumbing is processor-specific.

Change-Id: I8ce11a0de9b3dafcc29efd2649d776e93bff0e90
Reviewed-on: https://go-review.googlesource.com/22508
Reviewed-by: Austin Clements <austin@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Ian Lance Taylor 2016-04-27 14:18:29 -07:00
parent c717675c35
commit 5f9a870bf1
27 changed files with 714 additions and 227 deletions
Download patch file Download diff file Expand all files Collapse all files

8
src/cmd/cgo/doc.go
View file

@ -511,7 +511,6 @@ file compiled by gcc, the file x.cgo2.c:
void
_cgo_be59f0f25121_Cfunc_puts(void *v)
{
_cgo_wait_runtime_init_done();
struct {
char* p0;
int r;
@ -520,8 +519,7 @@ file compiled by gcc, the file x.cgo2.c:
a->r = puts((void*)a->p0);
}
It waits for Go runtime to be initialized (required for shared libraries),
extracts the arguments from the pointer to _Cfunc_puts's argument
It extracts the arguments from the pointer to _Cfunc_puts's argument
frame, invokes the system C function (in this case, puts), stores the
result in the frame, and returns.
@ -539,8 +537,8 @@ linkage to the desired libraries. The main function is provided by
_cgo_main.c:
int main() { return 0; }
void crosscall2(void(*fn)(void*, int), void *a, int c) { }
void _cgo_wait_runtime_init_done() { }
void crosscall2(void(*fn)(void*, int, uintptr_t), void *a, int c, uintptr_t ctxt) { }
uintptr_t _cgo_wait_runtime_init_done() { }
void _cgo_allocate(void *a, int c) { }
void _cgo_panic(void *a, int c) { }