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cmd: add new common architecture representation

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Information about CPU architectures (e.g., name, family, byte
ordering, pointer and register size) is currently redundantly
scattered around the source tree. Instead consolidate the basic
information into a single new package cmd/internal/sys.

Also, introduce new sys.I386, sys.AMD64, etc. names for the constants
'8', '6', etc. and replace most uses of the latter. The notable
exceptions are a couple of error messages that still refer to the old
char-based toolchain names and function reltype in cmd/link.

Passes toolstash/buildall.

Change-Id: I8a6f0cbd49577ec1672a98addebc45f767e36461
Reviewed-on: https://go-review.googlesource.com/21623
Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Matthew Dempsky 2016-04-06 12:01:40 -07:00
parent 31cf1c1779
commit c6e11fe037
67 changed files with 639 additions and 743 deletions
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22
src/cmd/internal/obj/mips/obj0.go
View file

@ -31,7 +31,7 @@ package mips
import (
"cmd/internal/obj"
"encoding/binary"
"cmd/internal/sys"
"fmt"
"math"
)
@ -336,7 +336,7 @@ func preprocess(ctxt *obj.Link, cursym *obj.LSym) {
q.As = AMOVV
q.From.Type = obj.TYPE_MEM
q.From.Reg = REGG
q.From.Offset = 4 * int64(ctxt.Arch.Ptrsize) // G.panic
q.From.Offset = 4 * int64(ctxt.Arch.PtrSize) // G.panic
q.To.Type = obj.TYPE_REG
q.To.Reg = REG_R1
@ -559,9 +559,9 @@ func stacksplit(ctxt *obj.Link, p *obj.Prog, framesize int32) *obj.Prog {
p.As = AMOVV
p.From.Type = obj.TYPE_MEM
p.From.Reg = REGG
p.From.Offset = 2 * int64(ctxt.Arch.Ptrsize) // G.stackguard0
p.From.Offset = 2 * int64(ctxt.Arch.PtrSize) // G.stackguard0
if ctxt.Cursym.Cfunc {
p.From.Offset = 3 * int64(ctxt.Arch.Ptrsize) // G.stackguard1
p.From.Offset = 3 * int64(ctxt.Arch.PtrSize) // G.stackguard1
}
p.To.Type = obj.TYPE_REG
p.To.Reg = REG_R1
@ -1469,27 +1469,17 @@ loop:
}
var Linkmips64 = obj.LinkArch{
ByteOrder: binary.BigEndian,
Name: "mips64",
Thechar: '0',
Arch: sys.ArchMIPS64,
Preprocess: preprocess,
Assemble: span0,
Follow: follow,
Progedit: progedit,
Minlc: 4,
Ptrsize: 8,
Regsize: 8,
}
var Linkmips64le = obj.LinkArch{
ByteOrder: binary.LittleEndian,
Name: "mips64le",
Thechar: '0',
Arch: sys.ArchMIPS64LE,
Preprocess: preprocess,
Assemble: span0,
Follow: follow,
Progedit: progedit,
Minlc: 4,
Ptrsize: 8,
Regsize: 8,
}