runtime: more NOPTR

Fixes linux builds (_vdso); may fix others.
I can at least cross-compile cmd/go for every
implemented system now.

TBR=iant
CC=golang-codereviews
https://golang.org/cl/142630043

src/runtime/mem_plan9.c

@@ -10,6 +10,7 @@
 #include "textflag.h"
 
 extern byte runtime·end[];
+#pragma dataflag NOPTR
 static byte *bloc = { runtime·end };
 static Mutex memlock;
 

src/runtime/rt0_linux_386.s

@@ -21,5 +21,5 @@ TEXT _fallback_vdso(SB),NOSPLIT,$0
 	RET
 
 DATA	runtime·_vdso(SB)/4, $_fallback_vdso(SB)
-GLOBL	runtime·_vdso(SB), $4
+GLOBL	runtime·_vdso(SB), NOPTR, $4
 

src/runtime/rt0_linux_arm.s

@@ -77,7 +77,7 @@ DATA bad_abi_msg+0x18(SB)/8, $" run on "
 DATA bad_abi_msg+0x20(SB)/8, $"EABI ker"
 DATA bad_abi_msg+0x28(SB)/4, $"nels"
 DATA bad_abi_msg+0x2c(SB)/1, $0xa
-GLOBL bad_abi_msg(SB), $45
+GLOBL bad_abi_msg(SB), RODATA, $45
 
 TEXT oabi_syscall<>(SB),NOSPLIT,$-4
 	ADD $1, PC, R4

src/runtime/rt0_plan9_386.s

@@ -17,7 +17,7 @@ TEXT _rt0_386_plan9(SB),NOSPLIT,$12
 	CALL	runtime·rt0_go(SB)
 
 DATA  runtime·isplan9(SB)/4, $1
-GLOBL runtime·isplan9(SB), $4
-GLOBL _tos(SB), $4
-GLOBL _privates(SB), $4
-GLOBL _nprivates(SB), $4
+GLOBL runtime·isplan9(SB), NOPTR, $4
+GLOBL _tos(SB), NOPTR, $4
+GLOBL _privates(SB), NOPTR, $4
+GLOBL _nprivates(SB), NOPTR, $4

src/runtime/rt0_plan9_amd64.s

@@ -15,7 +15,7 @@ TEXT _rt0_amd64_plan9(SB),NOSPLIT,$24
 	JMP	AX
 
 DATA runtime·isplan9(SB)/4, $1
-GLOBL runtime·isplan9(SB), $4
-GLOBL _tos(SB), $8
-GLOBL _privates(SB), $8
-GLOBL _nprivates(SB), $4
+GLOBL runtime·isplan9(SB), NOPTR, $4
+GLOBL _tos(SB), NOPTR, $8
+GLOBL _privates(SB), NOPTR, $8
+GLOBL _nprivates(SB), NOPTR, $4

src/runtime/rt0_solaris_amd64.s

@@ -15,4 +15,4 @@ TEXT main(SB),NOSPLIT,$-8
 	JMP	AX
 
 DATA runtime·issolaris(SB)/4, $1
-GLOBL runtime·issolaris(SB), $4
+GLOBL runtime·issolaris(SB), NOPTR, $4

src/runtime/sys_dragonfly_386.s

@@ -378,4 +378,4 @@ TEXT runtime·closeonexec(SB),NOSPLIT,$32
 	NEGL	AX
 	RET
 
-GLOBL runtime·tlsoffset(SB),$4
+GLOBL runtime·tlsoffset(SB),NOPTR,$4

src/runtime/sys_freebsd_386.s

@@ -388,4 +388,4 @@ TEXT runtime·closeonexec(SB),NOSPLIT,$32
 	NEGL	AX
 	RET
 
-GLOBL runtime·tlsoffset(SB),$4
+GLOBL runtime·tlsoffset(SB),NOPTR,$4

src/runtime/sys_netbsd_386.s

@@ -350,7 +350,7 @@ TEXT runtime·sysctl(SB),NOSPLIT,$28
 	MOVL	$0, AX
 	RET
 
-GLOBL runtime·tlsoffset(SB),$4
+GLOBL runtime·tlsoffset(SB),NOPTR,$4
 
 // int32 runtime·kqueue(void)
 TEXT runtime·kqueue(SB),NOSPLIT,$0

src/runtime/sys_openbsd_386.s

@@ -395,4 +395,4 @@ TEXT runtime·closeonexec(SB),NOSPLIT,$32
 	NEGL	AX
 	RET
 
-GLOBL runtime·tlsoffset(SB),$4
+GLOBL runtime·tlsoffset(SB),NOPTR,$4

src/runtime/sys_windows_386.s

@@ -212,7 +212,7 @@ TEXT runtime·externalthreadhandler(SB),NOSPLIT,$0
 	POPL	BP
 	RET
 
-GLOBL runtime·cbctxts(SB), $4
+GLOBL runtime·cbctxts(SB), NOPTR, $4
 
 TEXT runtime·callbackasm1+0(SB),NOSPLIT,$0
   	MOVL	0(SP), AX	// will use to find our callback context

src/runtime/sys_windows_amd64.s

@@ -249,7 +249,7 @@ TEXT runtime·externalthreadhandler(SB),NOSPLIT,$0
 	POPQ	BP
 	RET
 
-GLOBL runtime·cbctxts(SB), $8
+GLOBL runtime·cbctxts(SB), NOPTR, $8
 
 TEXT runtime·callbackasm1(SB),NOSPLIT,$0
 	// Construct args vector for cgocallback().

src/sync/atomic/asm_arm.s

@@ -194,4 +194,4 @@ TEXT slowCheck64<>(SB),NOSPLIT,$0-0
 	MOVW	R0, ok64<>(SB)
 	RET
 
-GLOBL ok64<>(SB), $4
+GLOBL ok64<>(SB), NOPTR, $4

src/sync/atomic/asm_linux_arm.s

@@ -124,7 +124,7 @@ TEXT kernelCAS64<>(SB),NOSPLIT,$0-21
 TEXT ·generalCAS64(SB),NOSPLIT,$0-21
 	B  	runtime·cas64(SB)
 
-GLOBL armCAS64(SB), $4
+GLOBL armCAS64(SB), NOPTR, $4
 
 TEXT setupAndCallCAS64<>(SB),NOSPLIT,$-4-21
 	MOVW	$0xffff0ffc, R0 // __kuser_helper_version