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Support 32 bit floats

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This commit is contained in:
Derek Parker
2014-10-26 12:44:26 -05:00
parent 6af32b40e6
commit f1ceba0909
3 changed files with 19 additions and 8 deletions
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21
proctl/variables_linux_amd64.go
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@ -141,7 +141,7 @@ func (thread *ThreadContext) extractValue(instructions []byte, off int64, typ in
case *dwarf.IntType:
return thread.readInt(offaddr, t.ByteSize)
case *dwarf.FloatType:
return thread.readFloat64(offaddr)
return thread.readFloat(offaddr, t.ByteSize)
}
return "", fmt.Errorf("could not find value for type %s", typ)
@ -242,16 +242,25 @@ func (thread *ThreadContext) readInt(addr uintptr, size int64) (string, error) {
return strconv.Itoa(n), nil
}
func (thread *ThreadContext) readFloat64(addr uintptr) (string, error) {
var n float64
val, err := thread.readMemory(addr, 8)
func (thread *ThreadContext) readFloat(addr uintptr, size int64) (string, error) {
val, err := thread.readMemory(addr, uintptr(size))
if err != nil {
return "", err
}
buf := bytes.NewBuffer(val)
binary.Read(buf, binary.LittleEndian, &n)
return strconv.FormatFloat(n, 'f', -1, 64), nil
switch size {
case 4:
n := float32(0)
binary.Read(buf, binary.LittleEndian, &n)
return strconv.FormatFloat(float64(n), 'f', -1, int(size)*8), nil
case 8:
n := float64(0)
binary.Read(buf, binary.LittleEndian, &n)
return strconv.FormatFloat(n, 'f', -1, int(size)*8), nil
}
return "", fmt.Errorf("could not read float")
}
func (thread *ThreadContext) readMemory(addr uintptr, size uintptr) ([]byte, error) {