Imported Upstream version 1.4upstream/1.4

1 files changed, 0 insertions, 57 deletions

diff --git a/src/pkg/runtime/sys_x86.c b/src/pkg/runtime/sys_x86.c
deleted file mode 100644
index a450b3e58..000000000
--- a/src/pkg/runtime/sys_x86.c
+++ /dev/null
@@ -1,57 +0,0 @@
-// Copyright 2013 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.
-
-// +build amd64 amd64p32 386
-
-#include "runtime.h"
-
-// adjust Gobuf as it if executed a call to fn with context ctxt
-// and then did an immediate gosave.
-void
-runtime·gostartcall(Gobuf *gobuf, void (*fn)(void), void *ctxt)
-{
-	uintptr *sp;
-	
-	sp = (uintptr*)gobuf->sp;
-	if(sizeof(uintreg) > sizeof(uintptr))
-		*--sp = 0;
-	*--sp = (uintptr)gobuf->pc;
-	gobuf->sp = (uintptr)sp;
-	gobuf->pc = (uintptr)fn;
-	gobuf->ctxt = ctxt;
-}
-
-// Called to rewind context saved during morestack back to beginning of function.
-// To help us, the linker emits a jmp back to the beginning right after the
-// call to morestack. We just have to decode and apply that jump.
-void
-runtime·rewindmorestack(Gobuf *gobuf)
-{
-	byte *pc;
-
-	pc = (byte*)gobuf->pc;
-	if(pc[0] == 0xe9) { // jmp 4-byte offset
-		gobuf->pc = gobuf->pc + 5 + *(int32*)(pc+1);
-		return;
-	}
-	if(pc[0] == 0xeb) { // jmp 1-byte offset
-		gobuf->pc = gobuf->pc + 2 + *(int8*)(pc+1);
-		return;
-	}
-	if(pc[0] == 0xcc) {
-		// This is a breakpoint inserted by gdb.  We could use
-		// runtime·findfunc to find the function.  But if we
-		// do that, then we will continue execution at the
-		// function entry point, and we will not hit the gdb
-		// breakpoint.  So for this case we don't change
-		// gobuf->pc, so that when we return we will execute
-		// the jump instruction and carry on.  This means that
-		// stack unwinding may not work entirely correctly
-		// (http://golang.org/issue/5723) but the user is
-		// running under gdb anyhow.
-		return;
-	}
-	runtime·printf("runtime: pc=%p %x %x %x %x %x\n", pc, pc[0], pc[1], pc[2], pc[3], pc[4]);
-	runtime·throw("runtime: misuse of rewindmorestack");
-}