runtime: revert 6974:1f3c3696babb
I missed that environment is used during runtime setup,
well before go init() functions run. Implemented os-dependent
runtime.goenvs functions to allow for different unix, plan9 and
windows versions of environment discovery.
R=rsc, paulzhol
CC=golang-dev
https://golang.org/cl/3787046
diff --git a/src/pkg/runtime/runtime.h b/src/pkg/runtime/runtime.h
index e53855e..bde6283 100644
--- a/src/pkg/runtime/runtime.h
+++ b/src/pkg/runtime/runtime.h
@@ -370,6 +370,7 @@
*/
int32 runtime·strcmp(byte*, byte*);
int32 runtime·findnull(byte*);
+int32 runtime·findnullw(uint16*);
void runtime·dump(byte*, int32);
int32 runtime·runetochar(byte*, int32);
int32 runtime·charntorune(int32*, uint8*, int32);
@@ -384,6 +385,8 @@
uintptr runtime·gosave(Gobuf*);
void runtime·lessstack(void);
void runtime·goargs(void);
+void runtime·goenvs(void);
+void runtime·goenvs_unix(void);
void* runtime·getu(void);
void runtime·throw(int8*);
void runtime·panicstring(int8*);
@@ -399,6 +402,7 @@
String runtime·gostring(byte*);
String runtime·gostringn(byte*, int32);
String runtime·gostringnocopy(byte*);
+String runtime·gostringw(uint16*);
void runtime·initsig(int32);
int32 runtime·gotraceback(void);
void runtime·traceback(uint8 *pc, uint8 *sp, uint8 *lr, G* gp);
