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cgo: add complex float, complex double

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R=rsc
CC=binet, golang-dev
https://golang.org/cl/3906041
This commit is contained in:
Sebastien Binet 2011-01-19 14:30:57 -05:00 • committed by Russ Cox
parent 13c2e62966
commit 655da99627
5 changed files with 52 additions and 22 deletions
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34
src/cmd/cgo/gcc.go
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@ -27,13 +27,15 @@ var debugDefine = flag.Bool("debug-define", false, "print relevant #defines")
var debugGcc = flag.Bool("debug-gcc", false, "print gcc invocations")
var nameToC = map[string]string{
"schar": "signed char",
"uchar": "unsigned char",
"ushort": "unsigned short",
"uint": "unsigned int",
"ulong": "unsigned long",
"longlong": "long long",
"ulonglong": "unsigned long long",
"schar": "signed char",
"uchar": "unsigned char",
"ushort": "unsigned short",
"uint": "unsigned int",
"ulong": "unsigned long",
"longlong": "long long",
"ulonglong": "unsigned long long",
"complexfloat": "float complex",
"complexdouble": "double complex",
}
// cname returns the C name to use for C.s.
@ -591,6 +593,7 @@ type typeConv struct {
int8, int16, int32, int64 ast.Expr
uint8, uint16, uint32, uint64, uintptr ast.Expr
float32, float64 ast.Expr
complex64, complex128 ast.Expr
void ast.Expr
unsafePointer ast.Expr
string ast.Expr
@ -617,6 +620,8 @@ func (c *typeConv) Init(ptrSize int64) {
c.uintptr = c.Ident("uintptr")
c.float32 = c.Ident("float32")
c.float64 = c.Ident("float64")
c.complex64 = c.Ident("complex64")
c.complex128 = c.Ident("complex128")
c.unsafePointer = c.Ident("unsafe.Pointer")
c.void = c.Ident("void")
c.string = c.Ident("string")
@ -648,6 +653,8 @@ var dwarfToName = map[string]string{
"long long int": "longlong",
"long long unsigned int": "ulonglong",
"signed char": "schar",
"float complex": "complexfloat",
"double complex": "complexdouble",
}
// Type returns a *Type with the same memory layout as
@ -749,6 +756,19 @@ func (c *typeConv) Type(dtype dwarf.Type) *Type {
t.Align = c.ptrSize
}
case *dwarf.ComplexType:
switch t.Size {
default:
fatal("unexpected: %d-byte complex type - %s", t.Size, dtype)
case 8:
t.Go = c.complex64
case 16:
t.Go = c.complex128
}
if t.Align = t.Size; t.Align >= c.ptrSize {
t.Align = c.ptrSize
}
case *dwarf.FuncType:
// No attempt at translation: would enable calls
// directly between worlds, but we need to moderate those.