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cmd/internal/objfile: add ppc64/ppc64le disassembler support

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Change-Id: I7d213b4f8e4cda73ea7687fb97dbd22e58163948
Reviewed-on: https://go-review.googlesource.com/9682
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
Shenghou Ma 2015-05-04 01:21:27 -04:00 committed by Russ Cox
parent ed0a956746
commit 94cf54e861
2 changed files with 29 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
src/cmd/internal/objfile/disasm.go
View File

@ -16,6 +16,7 @@ import (
"text/tabwriter"
"golang.org/x/arch/arm/armasm"
"golang.org/x/arch/ppc64/ppc64asm"
"golang.org/x/arch/x86/x86asm"
)
@ -49,6 +50,7 @@ func (f *File) Disasm() (*Disasm, error) {
}
goarch := f.GOARCH()
println("GOARCH", goarch)
disasm := disasms[goarch]
byteOrder := byteOrders[goarch]
if disasm == nil || byteOrder == nil {
@ -170,7 +172,7 @@ func (d *Disasm) Decode(start, end uint64, relocs []Reloc, f func(pc, size uint6
lookup := d.lookup
for pc := start; pc < end; {
i := pc - d.textStart
text, size := d.disasm(code[i:], pc, lookup)
text, size := d.disasm(code[i:], pc, lookup, d.byteOrder)
file, line, _ := d.pcln.PCToLine(pc)
text += "\t"
first := true
@ -189,13 +191,13 @@ func (d *Disasm) Decode(start, end uint64, relocs []Reloc, f func(pc, size uint6
}
type lookupFunc func(addr uint64) (sym string, base uint64)
type disasmFunc func(code []byte, pc uint64, lookup lookupFunc) (text string, size int)
type disasmFunc func(code []byte, pc uint64, lookup lookupFunc, ord binary.ByteOrder) (text string, size int)
func disasm_386(code []byte, pc uint64, lookup lookupFunc) (string, int) {
func disasm_386(code []byte, pc uint64, lookup lookupFunc, _ binary.ByteOrder) (string, int) {
return disasm_x86(code, pc, lookup, 32)
}
func disasm_amd64(code []byte, pc uint64, lookup lookupFunc) (string, int) {
func disasm_amd64(code []byte, pc uint64, lookup lookupFunc, _ binary.ByteOrder) (string, int) {
return disasm_x86(code, pc, lookup, 64)
}
@ -232,7 +234,7 @@ func (r textReader) ReadAt(data []byte, off int64) (n int, err error) {
return
}
func disasm_arm(code []byte, pc uint64, lookup lookupFunc) (string, int) {
func disasm_arm(code []byte, pc uint64, lookup lookupFunc, _ binary.ByteOrder) (string, int) {
inst, err := armasm.Decode(code, armasm.ModeARM)
var text string
size := inst.Len
@ -245,10 +247,25 @@ func disasm_arm(code []byte, pc uint64, lookup lookupFunc) (string, int) {
return text, size
}
func disasm_ppc64(code []byte, pc uint64, lookup lookupFunc, byteOrder binary.ByteOrder) (string, int) {
inst, err := ppc64asm.Decode(code, byteOrder)
var text string
size := inst.Len
if err != nil || size == 0 || inst.Op == 0 {
size = 4
text = "?"
} else {
text = ppc64asm.GoSyntax(inst, pc, lookup)
}
return text, size
}
var disasms = map[string]disasmFunc{
"386": disasm_386,
"amd64": disasm_amd64,
"arm": disasm_arm,
"386": disasm_386,
"amd64": disasm_amd64,
"arm": disasm_arm,
"ppc64": disasm_ppc64,
"ppc64le": disasm_ppc64,
}
var byteOrders = map[string]binary.ByteOrder{

4
src/cmd/internal/objfile/elf.go
View File

@ -9,6 +9,7 @@ package objfile
import (
"debug/dwarf"
"debug/elf"
"encoding/binary"
"fmt"
"os"
)
@ -99,6 +100,9 @@ func (f *elfFile) goarch() string {
case elf.EM_ARM:
return "arm"
case elf.EM_PPC64:
if f.elf.ByteOrder == binary.LittleEndian {
return "ppc64le"
}
return "ppc64"
case elf.EM_S390:
return "s390x"