Imported Upstream version 1.4upstream/1.4

1 files changed, 0 insertions, 87 deletions

diff --git a/src/pkg/runtime/mgc0.h b/src/pkg/runtime/mgc0.h
deleted file mode 100644
index 16000d1ae..000000000
--- a/src/pkg/runtime/mgc0.h
+++ /dev/null
@@ -1,87 +0,0 @@
-// Copyright 2012 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.
-
-// Garbage collector (GC)
-
-// GC instruction opcodes.
-//
-// The opcode of an instruction is followed by zero or more
-// arguments to the instruction.
-//
-// Meaning of arguments:
-//   off      Offset (in bytes) from the start of the current object
-//   objgc    Pointer to GC info of an object
-//   objgcrel Offset to GC info of an object
-//   len      Length of an array
-//   elemsize Size (in bytes) of an element
-//   size     Size (in bytes)
-//
-// NOTE: There is a copy of these in ../reflect/type.go.
-// They must be kept in sync.
-enum {
-	GC_END,         // End of object, loop or subroutine. Args: none
-	GC_PTR,         // A typed pointer. Args: (off, objgc)
-	GC_APTR,        // Pointer to an arbitrary object. Args: (off)
-	GC_ARRAY_START, // Start an array with a fixed length. Args: (off, len, elemsize)
-	GC_ARRAY_NEXT,  // The next element of an array. Args: none
-	GC_CALL,        // Call a subroutine. Args: (off, objgcrel)
-	GC_CHAN_PTR,    // Go channel. Args: (off, ChanType*)
-	GC_STRING,      // Go string. Args: (off)
-	GC_EFACE,       // interface{}. Args: (off)
-	GC_IFACE,       // interface{...}. Args: (off)
-	GC_SLICE,       // Go slice. Args: (off, objgc)
-	GC_REGION,      // A region/part of the current object. Args: (off, size, objgc)
-
-	GC_NUM_INSTR,   // Number of instruction opcodes
-};
-
-enum {
-	// Size of GC's fixed stack.
-	//
-	// The current GC implementation permits:
-	//  - at most 1 stack allocation because of GC_CALL
-	//  - at most GC_STACK_CAPACITY allocations because of GC_ARRAY_START
-	GC_STACK_CAPACITY = 8,	
-};
-
-enum {
-	ScanStackByFrames = 1,
-	IgnorePreciseGC = 0,
-
-	// Four bits per word (see #defines below).
-	wordsPerBitmapWord = sizeof(void*)*8/4,
-	bitShift = sizeof(void*)*8/4,
-};
-
-// Bits in per-word bitmap.
-// #defines because enum might not be able to hold the values.
-//
-// Each word in the bitmap describes wordsPerBitmapWord words
-// of heap memory.  There are 4 bitmap bits dedicated to each heap word,
-// so on a 64-bit system there is one bitmap word per 16 heap words.
-// The bits in the word are packed together by type first, then by
-// heap location, so each 64-bit bitmap word consists of, from top to bottom,
-// the 16 bitMarked bits for the corresponding heap words,
-// then the 16 bitScan/bitBlockBoundary bits, then the 16 bitAllocated bits.
-// This layout makes it easier to iterate over the bits of a given type.
-//
-// The bitmap starts at mheap.arena_start and extends *backward* from
-// there.  On a 64-bit system the off'th word in the arena is tracked by
-// the off/16+1'th word before mheap.arena_start.  (On a 32-bit system,
-// the only difference is that the divisor is 8.)
-//
-// To pull out the bits corresponding to a given pointer p, we use:
-//
-//	off = p - (uintptr*)mheap.arena_start;  // word offset
-//	b = (uintptr*)mheap.arena_start - off/wordsPerBitmapWord - 1;
-//	shift = off % wordsPerBitmapWord
-//	bits = *b >> shift;
-//	/* then test bits & bitAllocated, bits & bitMarked, etc. */
-//
-#define bitAllocated		((uintptr)1<<(bitShift*0))	/* block start; eligible for garbage collection */
-#define bitScan			((uintptr)1<<(bitShift*1))	/* when bitAllocated is set */
-#define bitMarked		((uintptr)1<<(bitShift*2))	/* when bitAllocated is set */
-#define bitBlockBoundary	((uintptr)1<<(bitShift*1))	/* when bitAllocated is NOT set - mark for FlagNoGC objects */
-
-#define bitMask (bitAllocated | bitScan | bitMarked)