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// Use of this source code is governed by a BSD-style

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// license that can be found in the LICENSE file.

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#include <stdint.h>

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#include <stdlib.h>

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#include <stdio.h>

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#undef nil

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#define nil ((void*)0)

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#define nelem(x) (sizeof(x)/sizeof((x)[0]))

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typedef uint32_t uint32;

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typedef uint64_t uint64;

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typedef uintptr_t uintptr;

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* The beginning of the per-goroutine structure,

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* as defined in ../pkg/runtime/runtime.h.

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* Just enough to edit these two fields.

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typedef struct G G;

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struct G

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{

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uintptr stacklo;

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uintptr stackhi;

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};

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* Arguments to the _cgo_thread_start call.

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* Also known to ../pkg/runtime/runtime.h.

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typedef struct ThreadStart ThreadStart;

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struct ThreadStart

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{

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G *g;

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uintptr *tls;

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void (*fn)(void);

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};

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* Called by 5c/6c/8c world.

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* Makes a local copy of the ThreadStart and

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* calls _cgo_sys_thread_start(ts).

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extern void (*_cgo_thread_start)(ThreadStart *ts);

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* Creates a new operating system thread without updating any Go state

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* (OS dependent).

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extern void (*_cgo_sys_thread_create)(void* (*func)(void*), void* arg);

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* Indicates whether a dummy pthread per-thread variable is allocated.

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extern uintptr_t *_cgo_pthread_key_created;

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* Creates the new operating system thread (OS, arch dependent).

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void _cgo_sys_thread_start(ThreadStart *ts);

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* Waits for the Go runtime to be initialized (OS dependent).

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* If runtime.SetCgoTraceback is used to set a context function,

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* calls the context function and returns the context value.

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uintptr_t _cgo_wait_runtime_init_done(void);

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* Call fn in the 6c world.

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void crosscall_amd64(void (*fn)(void), void (*setg_gcc)(void*), void *g);

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* Call fn in the 8c world.

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void crosscall_386(void (*fn)(void));

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* Prints error then calls abort. For linux and android.

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void fatalf(const char* format, ...);

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* Registers the current mach thread port for EXC_BAD_ACCESS processing.

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void darwin_arm_init_thread_exception_port(void);

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* Starts a mach message server processing EXC_BAD_ACCESS.

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void darwin_arm_init_mach_exception_handler(void);

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* The cgo context function. See runtime.SetCgoTraceback.

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struct context_arg {

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uintptr_t Context;

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};

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extern void (*(_cgo_get_context_function(void)))(struct context_arg*);

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* The argument for the cgo traceback callback. See runtime.SetCgoTraceback.

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struct cgoTracebackArg {

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uintptr_t Context;

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uintptr_t SigContext;

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uintptr_t* Buf;

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uintptr_t Max;

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};

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* TSAN support. This is only useful when building with

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* CGO_CFLAGS="-fsanitize=thread" CGO_LDFLAGS="-fsanitize=thread" go install

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#undef CGO_TSAN

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#if defined(__has_feature)

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# if __has_feature(thread_sanitizer)

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# define CGO_TSAN

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# endif

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#elif defined(__SANITIZE_THREAD__)

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# define CGO_TSAN

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#endif

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#ifdef CGO_TSAN

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// These must match the definitions in yesTsanProlog in cmd/cgo/out.go.

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// In general we should call _cgo_tsan_acquire when we enter C code,

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// and call _cgo_tsan_release when we return to Go code.

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// This is only necessary when calling code that might be instrumented

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// by TSAN, which mostly means system library calls that TSAN intercepts.

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// See the comment in cmd/cgo/out.go for more details.

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long long _cgo_sync __attribute__ ((common));

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extern void __tsan_acquire(void*);

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extern void __tsan_release(void*);

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__attribute__ ((unused))

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static void _cgo_tsan_acquire() {

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__tsan_acquire(&_cgo_sync);

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}

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__attribute__ ((unused))

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static void _cgo_tsan_release() {

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__tsan_release(&_cgo_sync);

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}

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#else // !defined(CGO_TSAN)

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#define _cgo_tsan_acquire()

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#define _cgo_tsan_release()

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#endif // !defined(CGO_TSAN)

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