diff options
Diffstat (limited to 'vendor/github.com/google/gops/internal/obj/data.go')
| -rw-r--r-- | vendor/github.com/google/gops/internal/obj/data.go | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/vendor/github.com/google/gops/internal/obj/data.go b/vendor/github.com/google/gops/internal/obj/data.go deleted file mode 100644 index 0ccb053f..00000000 --- a/vendor/github.com/google/gops/internal/obj/data.go +++ /dev/null @@ -1,190 +0,0 @@ -// Derived from Inferno utils/6l/obj.c and utils/6l/span.c -// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6l/obj.c -// https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6l/span.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -package obj - -import ( - "log" - "math" -) - -// Grow increases the length of s.P to lsiz. -func (s *LSym) Grow(lsiz int64) { - siz := int(lsiz) - if int64(siz) != lsiz { - log.Fatalf("LSym.Grow size %d too long", lsiz) - } - if len(s.P) >= siz { - return - } - // TODO(dfc) append cap-len at once, rather than - // one byte at a time. - for cap(s.P) < siz { - s.P = append(s.P[:cap(s.P)], 0) - } - s.P = s.P[:siz] -} - -// GrowCap increases the capacity of s.P to c. -func (s *LSym) GrowCap(c int64) { - if int64(cap(s.P)) >= c { - return - } - if s.P == nil { - s.P = make([]byte, 0, c) - return - } - b := make([]byte, len(s.P), c) - copy(b, s.P) - s.P = b -} - -// prepwrite prepares to write data of size siz into s at offset off. -func (s *LSym) prepwrite(ctxt *Link, off int64, siz int) { - if off < 0 || siz < 0 || off >= 1<<30 { - log.Fatalf("prepwrite: bad off=%d siz=%d", off, siz) - } - if s.Type == SBSS || s.Type == STLSBSS { - ctxt.Diag("cannot supply data for BSS var") - } - l := off + int64(siz) - s.Grow(l) - if l > s.Size { - s.Size = l - } -} - -// WriteFloat32 writes f into s at offset off. -func (s *LSym) WriteFloat32(ctxt *Link, off int64, f float32) { - s.prepwrite(ctxt, off, 4) - ctxt.Arch.ByteOrder.PutUint32(s.P[off:], math.Float32bits(f)) -} - -// WriteFloat64 writes f into s at offset off. -func (s *LSym) WriteFloat64(ctxt *Link, off int64, f float64) { - s.prepwrite(ctxt, off, 8) - ctxt.Arch.ByteOrder.PutUint64(s.P[off:], math.Float64bits(f)) -} - -// WriteInt writes an integer i of size siz into s at offset off. -func (s *LSym) WriteInt(ctxt *Link, off int64, siz int, i int64) { - s.prepwrite(ctxt, off, siz) - switch siz { - default: - ctxt.Diag("WriteInt: bad integer size: %d", siz) - case 1: - s.P[off] = byte(i) - case 2: - ctxt.Arch.ByteOrder.PutUint16(s.P[off:], uint16(i)) - case 4: - ctxt.Arch.ByteOrder.PutUint32(s.P[off:], uint32(i)) - case 8: - ctxt.Arch.ByteOrder.PutUint64(s.P[off:], uint64(i)) - } -} - -// WriteAddr writes an address of size siz into s at offset off. -// rsym and roff specify the relocation for the address. -func (s *LSym) WriteAddr(ctxt *Link, off int64, siz int, rsym *LSym, roff int64) { - if siz != ctxt.Arch.PtrSize { - ctxt.Diag("WriteAddr: bad address size %d in %s", siz, s.Name) - } - s.prepwrite(ctxt, off, siz) - r := Addrel(s) - r.Off = int32(off) - if int64(r.Off) != off { - ctxt.Diag("WriteAddr: off overflow %d in %s", off, s.Name) - } - r.Siz = uint8(siz) - r.Sym = rsym - r.Type = R_ADDR - r.Add = roff -} - -// WriteOff writes a 4 byte offset to rsym+roff into s at offset off. -// After linking the 4 bytes stored at s+off will be -// rsym+roff-(start of section that s is in). -func (s *LSym) WriteOff(ctxt *Link, off int64, rsym *LSym, roff int64) { - s.prepwrite(ctxt, off, 4) - r := Addrel(s) - r.Off = int32(off) - if int64(r.Off) != off { - ctxt.Diag("WriteOff: off overflow %d in %s", off, s.Name) - } - r.Siz = 4 - r.Sym = rsym - r.Type = R_ADDROFF - r.Add = roff -} - -// WriteString writes a string of size siz into s at offset off. -func (s *LSym) WriteString(ctxt *Link, off int64, siz int, str string) { - if siz < len(str) { - ctxt.Diag("WriteString: bad string size: %d < %d", siz, len(str)) - } - s.prepwrite(ctxt, off, siz) - copy(s.P[off:off+int64(siz)], str) -} - -// WriteBytes writes a slice of bytes into s at offset off. -func (s *LSym) WriteBytes(ctxt *Link, off int64, b []byte) int64 { - s.prepwrite(ctxt, off, len(b)) - copy(s.P[off:], b) - return off + int64(len(b)) -} - -func Addrel(s *LSym) *Reloc { - s.R = append(s.R, Reloc{}) - return &s.R[len(s.R)-1] -} - -func Setuintxx(ctxt *Link, s *LSym, off int64, v uint64, wid int64) int64 { - if s.Type == 0 { - s.Type = SDATA - } - if s.Size < off+wid { - s.Size = off + wid - s.Grow(s.Size) - } - - switch wid { - case 1: - s.P[off] = uint8(v) - case 2: - ctxt.Arch.ByteOrder.PutUint16(s.P[off:], uint16(v)) - case 4: - ctxt.Arch.ByteOrder.PutUint32(s.P[off:], uint32(v)) - case 8: - ctxt.Arch.ByteOrder.PutUint64(s.P[off:], v) - } - - return off + wid -} |