Editando: os_solaris.go
// Copyright 2014 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. package runtime import "unsafe" type mts struct { tv_sec int64 tv_nsec int64 } type mscratch struct { v [6]uintptr } type mOS struct { waitsema uintptr // semaphore for parking on locks perrno *int32 // pointer to tls errno // these are here because they are too large to be on the stack // of low-level NOSPLIT functions. //LibCall libcall; ts mts scratch mscratch } type libcFunc uintptr //go:linkname asmsysvicall6x runtime.asmsysvicall6 var asmsysvicall6x libcFunc // name to take addr of asmsysvicall6 func asmsysvicall6() // declared for vet; do NOT call //go:nosplit func sysvicall0(fn *libcFunc) uintptr { // Leave caller's PC/SP around for traceback. gp := getg() var mp *m if gp != nil { mp = gp.m } if mp != nil && mp.libcallsp == 0 { mp.libcallg.set(gp) mp.libcallpc = getcallerpc() // sp must be the last, because once async cpu profiler finds // all three values to be non-zero, it will use them mp.libcallsp = getcallersp() } else { mp = nil // See comment in sys_darwin.go:libcCall } var libcall libcall libcall.fn = uintptr(unsafe.Pointer(fn)) libcall.n = 0 libcall.args = uintptr(unsafe.Pointer(fn)) // it's unused but must be non-nil, otherwise crashes asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&libcall)) if mp != nil { mp.libcallsp = 0 } return libcall.r1 } //go:nosplit func sysvicall1(fn *libcFunc, a1 uintptr) uintptr { r1, _ := sysvicall1Err(fn, a1) return r1 } // sysvicall1Err returns both the system call result and the errno value. // This is used by sysvicall1 and pipe. // //go:nosplit func sysvicall1Err(fn *libcFunc, a1 uintptr) (r1, err uintptr) { // Leave caller's PC/SP around for traceback. gp := getg() var mp *m if gp != nil { mp = gp.m } if mp != nil && mp.libcallsp == 0 { mp.libcallg.set(gp) mp.libcallpc = getcallerpc() // sp must be the last, because once async cpu profiler finds // all three values to be non-zero, it will use them mp.libcallsp = getcallersp() } else { mp = nil } var libcall libcall libcall.fn = uintptr(unsafe.Pointer(fn)) libcall.n = 1 // TODO(rsc): Why is noescape necessary here and below? libcall.args = uintptr(noescape(unsafe.Pointer(&a1))) asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&libcall)) if mp != nil { mp.libcallsp = 0 } return libcall.r1, libcall.err } //go:nosplit func sysvicall2(fn *libcFunc, a1, a2 uintptr) uintptr { r1, _ := sysvicall2Err(fn, a1, a2) return r1 } //go:nosplit //go:cgo_unsafe_args // sysvicall2Err returns both the system call result and the errno value. // This is used by sysvicall2 and pipe2. func sysvicall2Err(fn *libcFunc, a1, a2 uintptr) (uintptr, uintptr) { // Leave caller's PC/SP around for traceback. gp := getg() var mp *m if gp != nil { mp = gp.m } if mp != nil && mp.libcallsp == 0 { mp.libcallg.set(gp) mp.libcallpc = getcallerpc() // sp must be the last, because once async cpu profiler finds // all three values to be non-zero, it will use them mp.libcallsp = getcallersp() } else { mp = nil } var libcall libcall libcall.fn = uintptr(unsafe.Pointer(fn)) libcall.n = 2 libcall.args = uintptr(noescape(unsafe.Pointer(&a1))) asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&libcall)) if mp != nil { mp.libcallsp = 0 } return libcall.r1, libcall.err } //go:nosplit func sysvicall3(fn *libcFunc, a1, a2, a3 uintptr) uintptr { r1, _ := sysvicall3Err(fn, a1, a2, a3) return r1 } //go:nosplit //go:cgo_unsafe_args // sysvicall3Err returns both the system call result and the errno value. // This is used by sysvicall3 and write1. func sysvicall3Err(fn *libcFunc, a1, a2, a3 uintptr) (r1, err uintptr) { // Leave caller's PC/SP around for traceback. gp := getg() var mp *m if gp != nil { mp = gp.m } if mp != nil && mp.libcallsp == 0 { mp.libcallg.set(gp) mp.libcallpc = getcallerpc() // sp must be the last, because once async cpu profiler finds // all three values to be non-zero, it will use them mp.libcallsp = getcallersp() } else { mp = nil } var libcall libcall libcall.fn = uintptr(unsafe.Pointer(fn)) libcall.n = 3 libcall.args = uintptr(noescape(unsafe.Pointer(&a1))) asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&libcall)) if mp != nil { mp.libcallsp = 0 } return libcall.r1, libcall.err } //go:nosplit //go:cgo_unsafe_args func sysvicall4(fn *libcFunc, a1, a2, a3, a4 uintptr) uintptr { // Leave caller's PC/SP around for traceback. gp := getg() var mp *m if gp != nil { mp = gp.m } if mp != nil && mp.libcallsp == 0 { mp.libcallg.set(gp) mp.libcallpc = getcallerpc() // sp must be the last, because once async cpu profiler finds // all three values to be non-zero, it will use them mp.libcallsp = getcallersp() } else { mp = nil } var libcall libcall libcall.fn = uintptr(unsafe.Pointer(fn)) libcall.n = 4 libcall.args = uintptr(noescape(unsafe.Pointer(&a1))) asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&libcall)) if mp != nil { mp.libcallsp = 0 } return libcall.r1 } //go:nosplit //go:cgo_unsafe_args func sysvicall5(fn *libcFunc, a1, a2, a3, a4, a5 uintptr) uintptr { // Leave caller's PC/SP around for traceback. gp := getg() var mp *m if gp != nil { mp = gp.m } if mp != nil && mp.libcallsp == 0 { mp.libcallg.set(gp) mp.libcallpc = getcallerpc() // sp must be the last, because once async cpu profiler finds // all three values to be non-zero, it will use them mp.libcallsp = getcallersp() } else { mp = nil } var libcall libcall libcall.fn = uintptr(unsafe.Pointer(fn)) libcall.n = 5 libcall.args = uintptr(noescape(unsafe.Pointer(&a1))) asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&libcall)) if mp != nil { mp.libcallsp = 0 } return libcall.r1 } //go:nosplit //go:cgo_unsafe_args func sysvicall6(fn *libcFunc, a1, a2, a3, a4, a5, a6 uintptr) uintptr { // Leave caller's PC/SP around for traceback. gp := getg() var mp *m if gp != nil { mp = gp.m } if mp != nil && mp.libcallsp == 0 { mp.libcallg.set(gp) mp.libcallpc = getcallerpc() // sp must be the last, because once async cpu profiler finds // all three values to be non-zero, it will use them mp.libcallsp = getcallersp() } else { mp = nil } var libcall libcall libcall.fn = uintptr(unsafe.Pointer(fn)) libcall.n = 6 libcall.args = uintptr(noescape(unsafe.Pointer(&a1))) asmcgocall(unsafe.Pointer(&asmsysvicall6x), unsafe.Pointer(&libcall)) if mp != nil { mp.libcallsp = 0 } return libcall.r1 } func issetugid() int32 { return int32(sysvicall0(&libc_issetugid)) }
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