runtime: rewrite interface code into Go

    
    I started to copy the Go 1.7 interface code, but the gc and gccgo
    representations of interfaces are too different.  So instead I rewrote
    the gccgo interface code from C to Go.  The code is largely the same as
    it was, but the names are more like those used in the gc runtime.
    
    I also copied over the string comparison functions, and tweaked the
    compiler to use eqstring when comparing strings for equality.
    
    Reviewed-on: https://go-review.googlesource.com/31591

From-SVN: r241384

1 files changed, 6 insertions, 4 deletions

diff --git a/libgo/runtime/runtime.h b/libgo/runtime/runtime.h
index e60eaed..8a91429 100644
--- a/libgo/runtime/runtime.h
+++ b/libgo/runtime/runtime.h
@@ -22,7 +22,6 @@
 #include <sys/mman.h>
 #endif
 
-#include "interface.h"
 #include "go-alloc.h"
 
 #define _STRINGIFY2_(x) #x
@@ -76,8 +75,8 @@ typedef	struct	PollDesc	PollDesc;
 typedef	struct	sudog		SudoG;
 
 typedef	struct	__go_open_array		Slice;
-typedef struct	__go_interface		Iface;
-typedef	struct	__go_empty_interface	Eface;
+typedef	struct	iface			Iface;
+typedef	struct	eface			Eface;
 typedef	struct	__go_type_descriptor	Type;
 typedef	struct	_defer			Defer;
 typedef	struct	_panic			Panic;
@@ -105,7 +104,6 @@ struct FuncVal
 };
 
 #include "array.h"
-#include "interface.h"
 
 // Rename Go types generated by mkrsysinfo.sh from C types, to avoid
 // the name conflict.
@@ -587,3 +585,7 @@ extern _Bool runtime_iscgo;
 extern _Bool runtime_cgoHasExtraM;
 extern Hchan *runtime_main_init_done;
 extern uintptr __go_end __attribute__ ((weak));
+extern void *getitab(const struct __go_type_descriptor *,
+		     const struct __go_type_descriptor *,
+		     _Bool)
+  __asm__ (GOSYM_PREFIX "runtime.getitab");