[dev.cc] runtime: convert assembly files for C to Go transition

The main change is that #include "zasm_GOOS_GOARCH.h"
is now #include "go_asm.h" and/or #include "go_tls.h".

Also, because C StackGuard is now Go _StackGuard,
the assembly name changes from const_StackGuard to
const__StackGuard.

In asm_$GOARCH.s, add new function getg, formerly
implemented in C.

The renamed atomics now have Go wrappers, to get
escape analysis annotations right. Those wrappers
are in CL 174860043.

LGTM=r, aram
R=r, aram
CC=austin, dvyukov, golang-codereviews, iant, khr
https://golang.org/cl/168510043

src/runtime/asm.s

@@ -12,3 +12,8 @@ DATA runtime·no_pointers_stackmap+0x00(SB)/4, $2
 DATA runtime·no_pointers_stackmap+0x04(SB)/4, $0
 GLOBL runtime·no_pointers_stackmap(SB),RODATA, $8
 
+TEXT runtime·nop(SB),NOSPLIT,$0-0
+	RET
+
+GLOBL runtime·mheap_(SB), NOPTR, $0
+GLOBL runtime·memstats(SB), NOPTR, $0

src/runtime/asm_386.s

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "funcdata.h"
 #include "textflag.h"
 
@@ -49,7 +50,7 @@ nocpuinfo:
 	// update stackguard after _cgo_init
 	MOVL	$runtime·g0(SB), CX
 	MOVL	(g_stack+stack_lo)(CX), AX
-	ADDL	$const_StackGuard, AX
+	ADDL	$const__StackGuard, AX
 	MOVL	AX, g_stackguard0(CX)
 	MOVL	AX, g_stackguard1(CX)
 
@@ -502,7 +503,7 @@ cas64_fail:
 //		return 1;
 //	}else
 //		return 0;
-TEXT runtime·casp(SB), NOSPLIT, $0-13
+TEXT runtime·casp1(SB), NOSPLIT, $0-13
 	MOVL	ptr+0(FP), BX
 	MOVL	old+4(FP), AX
 	MOVL	new+8(FP), CX
@@ -537,7 +538,7 @@ TEXT runtime·xchg(SB), NOSPLIT, $0-12
 	MOVL	AX, ret+8(FP)
 	RET
 
-TEXT runtime·xchgp(SB), NOSPLIT, $0-12
+TEXT runtime·xchgp1(SB), NOSPLIT, $0-12
 	MOVL	ptr+0(FP), BX
 	MOVL	new+4(FP), AX
 	XCHGL	AX, 0(BX)
@@ -555,7 +556,7 @@ again:
 	JNZ	again
 	RET
 
-TEXT runtime·atomicstorep(SB), NOSPLIT, $0-8
+TEXT runtime·atomicstorep1(SB), NOSPLIT, $0-8
 	MOVL	ptr+0(FP), BX
 	MOVL	val+4(FP), AX
 	XCHGL	AX, 0(BX)
@@ -2290,3 +2291,10 @@ TEXT _cgo_topofstack(SB),NOSPLIT,$0
 TEXT runtime·goexit(SB),NOSPLIT,$0-0
 	BYTE	$0x90	// NOP
 	CALL	runtime·goexit1(SB)	// does not return
+
+TEXT runtime·getg(SB),NOSPLIT,$0-4
+	get_tls(CX)
+	MOVL	g(CX), AX
+	MOVL	AX, ret+0(FP)
+	RET
+

src/runtime/asm_amd64.s

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "funcdata.h"
 #include "textflag.h"
 
@@ -47,7 +48,7 @@ nocpuinfo:
 	// update stackguard after _cgo_init
 	MOVQ	$runtime·g0(SB), CX
 	MOVQ	(g_stack+stack_lo)(CX), AX
-	ADDQ	$const_StackGuard, AX
+	ADDQ	$const__StackGuard, AX
 	MOVQ	AX, g_stackguard0(CX)
 	MOVQ	AX, g_stackguard1(CX)
 
@@ -489,7 +490,7 @@ TEXT runtime·atomicstoreuintptr(SB), NOSPLIT, $0-16
 //		return 1;
 //	} else
 //		return 0;
-TEXT runtime·casp(SB), NOSPLIT, $0-25
+TEXT runtime·casp1(SB), NOSPLIT, $0-25
 	MOVQ	ptr+0(FP), BX
 	MOVQ	old+8(FP), AX
 	MOVQ	new+16(FP), CX
@@ -541,7 +542,7 @@ TEXT runtime·xchg64(SB), NOSPLIT, $0-24
 	MOVQ	AX, ret+16(FP)
 	RET
 
-TEXT runtime·xchgp(SB), NOSPLIT, $0-24
+TEXT runtime·xchgp1(SB), NOSPLIT, $0-24
 	MOVQ	ptr+0(FP), BX
 	MOVQ	new+8(FP), AX
 	XCHGQ	AX, 0(BX)
@@ -559,7 +560,7 @@ again:
 	JNZ	again
 	RET
 
-TEXT runtime·atomicstorep(SB), NOSPLIT, $0-16
+TEXT runtime·atomicstorep1(SB), NOSPLIT, $0-16
 	MOVQ	ptr+0(FP), BX
 	MOVQ	val+8(FP), AX
 	XCHGQ	AX, 0(BX)
@@ -2235,3 +2236,9 @@ TEXT _cgo_topofstack(SB),NOSPLIT,$0
 TEXT runtime·goexit(SB),NOSPLIT,$0-0
 	BYTE	$0x90	// NOP
 	CALL	runtime·goexit1(SB)	// does not return
+
+TEXT runtime·getg(SB),NOSPLIT,$0-8
+	get_tls(CX)
+	MOVQ	g(CX), AX
+	MOVQ	AX, ret+0(FP)
+	RET

src/runtime/asm_amd64p32.s

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "funcdata.h"
 #include "textflag.h"
 
@@ -460,7 +461,7 @@ cas64_fail:
 //		return 1;
 //	} else
 //		return 0;
-TEXT runtime·casp(SB), NOSPLIT, $0-17
+TEXT runtime·casp1(SB), NOSPLIT, $0-17
 	MOVL	ptr+0(FP), BX
 	MOVL	old+4(FP), AX
 	MOVL	new+8(FP), CX
@@ -512,7 +513,7 @@ TEXT runtime·xchg64(SB), NOSPLIT, $0-24
 	MOVQ	AX, ret+16(FP)
 	RET
 
-TEXT runtime·xchgp(SB), NOSPLIT, $0-12
+TEXT runtime·xchgp1(SB), NOSPLIT, $0-12
 	MOVL	ptr+0(FP), BX
 	MOVL	new+4(FP), AX
 	XCHGL	AX, 0(BX)
@@ -530,7 +531,7 @@ again:
 	JNZ	again
 	RET
 
-TEXT runtime·atomicstorep(SB), NOSPLIT, $0-8
+TEXT runtime·atomicstorep1(SB), NOSPLIT, $0-8
 	MOVL	ptr+0(FP), BX
 	MOVL	val+4(FP), AX
 	XCHGL	AX, 0(BX)
@@ -1085,3 +1086,9 @@ TEXT runtime·return0(SB), NOSPLIT, $0
 TEXT runtime·goexit(SB),NOSPLIT,$0-0
 	BYTE	$0x90	// NOP
 	CALL	runtime·goexit1(SB)	// does not return
+
+TEXT runtime·getg(SB),NOSPLIT,$0-4
+	get_tls(CX)
+	MOVL	g(CX), AX
+	MOVL	AX, ret+0(FP)
+	RET

src/runtime/asm_arm.s

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "funcdata.h"
 #include "textflag.h"
 
@@ -1326,3 +1327,7 @@ TEXT _cgo_topofstack(SB),NOSPLIT,$8
 TEXT runtime·goexit(SB),NOSPLIT,$-4-0
 	MOVW	R0, R0	// NOP
 	BL	runtime·goexit1(SB)	// does not return
+
+TEXT runtime·getg(SB),NOSPLIT,$-4-4
+	MOVW	g, ret+0(FP)
+	RET

src/runtime/race_amd64.s

@@ -4,7 +4,8 @@
 
 // +build race
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "funcdata.h"
 #include "textflag.h"
 

src/runtime/rt0_windows_amd64.s

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 TEXT _rt0_amd64_windows(SB),NOSPLIT,$-8

src/runtime/sys_darwin_386.s

@@ -6,7 +6,8 @@
 // See http://fxr.watson.org/fxr/source/bsd/kern/syscalls.c?v=xnu-1228
 // or /usr/include/sys/syscall.h (on a Mac) for system call numbers.
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 // Exit the entire program (like C exit)

src/runtime/sys_darwin_amd64.s

@@ -11,7 +11,8 @@
 // The high 8 bits specify the kind of system call: 1=Mach, 2=BSD, 3=Machine-Dependent.
 //
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 // Exit the entire program (like C exit)

src/runtime/sys_dragonfly_386.s

@@ -6,7 +6,8 @@
 // /usr/src/sys/kern/syscalls.master for syscall numbers.
 //
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 	
 TEXT runtime·sys_umtx_sleep(SB),NOSPLIT,$-4

src/runtime/sys_dragonfly_amd64.s

@@ -6,7 +6,8 @@
 // /usr/src/sys/kern/syscalls.master for syscall numbers.
 //
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 	
 TEXT runtime·sys_umtx_sleep(SB),NOSPLIT,$0

src/runtime/sys_freebsd_386.s

@@ -6,7 +6,8 @@
 // /usr/src/sys/kern/syscalls.master for syscall numbers.
 //
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 	
 TEXT runtime·sys_umtx_op(SB),NOSPLIT,$-4

src/runtime/sys_freebsd_amd64.s

@@ -6,7 +6,8 @@
 // /usr/src/sys/kern/syscalls.master for syscall numbers.
 //
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 // FreeBSD 8, FreeBSD 9, and older versions that I have checked

src/runtime/sys_freebsd_arm.s

@@ -6,7 +6,8 @@
 // /usr/src/sys/kern/syscalls.master for syscall numbers.
 //
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 // for EABI, as we don't support OABI
@@ -362,7 +363,7 @@ TEXT runtime·closeonexec(SB),NOSPLIT,$0
 	SWI $0
 	RET
 
-TEXT runtime·casp(SB),NOSPLIT,$0
+TEXT runtime·casp1(SB),NOSPLIT,$0
 	B	runtime·cas(SB)
 
 // TODO(minux): this is only valid for ARMv6+

src/runtime/sys_linux_386.s

@@ -6,7 +6,8 @@
 // System calls and other sys.stuff for 386, Linux
 //
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 TEXT runtime·exit(SB),NOSPLIT,$0

src/runtime/sys_linux_amd64.s

@@ -6,7 +6,8 @@
 // System calls and other sys.stuff for AMD64, Linux
 //
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 TEXT runtime·exit(SB),NOSPLIT,$0-4

src/runtime/sys_linux_arm.s

@@ -6,7 +6,8 @@
 // System calls and other sys.stuff for arm, Linux
 //
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 // for EABI, as we don't support OABI
@@ -391,7 +392,7 @@ cascheck:
 	MOVB	R0, ret+12(FP)
 	RET
 
-TEXT runtime·casp(SB),NOSPLIT,$0
+TEXT runtime·casp1(SB),NOSPLIT,$0
 	B	runtime·cas(SB)
 
 TEXT runtime·osyield(SB),NOSPLIT,$0

src/runtime/sys_nacl_386.s

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 #include "syscall_nacl.h"
 

src/runtime/sys_nacl_amd64p32.s

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 #include "syscall_nacl.h"
 

src/runtime/sys_nacl_arm.s

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 #include "syscall_nacl.h"
 
@@ -301,7 +302,7 @@ nog:
 TEXT runtime·nacl_sysinfo(SB),NOSPLIT,$16
 	RET
 
-TEXT runtime·casp(SB),NOSPLIT,$0
+TEXT runtime·casp1(SB),NOSPLIT,$0
 	B	runtime·cas(SB)
 
 // This is only valid for ARMv6+, however, NaCl/ARM is only defined

src/runtime/sys_netbsd_386.s

@@ -6,7 +6,8 @@
 // /usr/src/sys/kern/syscalls.master for syscall numbers.
 //
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 // Exit the entire program (like C exit)

src/runtime/sys_netbsd_amd64.s

@@ -6,7 +6,8 @@
 // /usr/src/sys/kern/syscalls.master for syscall numbers.
 //
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 // int32 lwp_create(void *context, uintptr flags, void *lwpid)

src/runtime/sys_netbsd_arm.s

@@ -6,7 +6,8 @@
 // /usr/src/sys/kern/syscalls.master for syscall numbers.
 //
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 // Exit the entire program (like C exit)
@@ -330,7 +331,7 @@ TEXT runtime·closeonexec(SB),NOSPLIT,$0
 	SWI $0xa0005c	// sys_fcntl
 	RET
 
-TEXT runtime·casp(SB),NOSPLIT,$0
+TEXT runtime·casp1(SB),NOSPLIT,$0
 	B	runtime·cas(SB)
 
 // TODO(minux): this is only valid for ARMv6+

src/runtime/sys_openbsd_386.s

@@ -6,7 +6,8 @@
 // /usr/src/sys/kern/syscalls.master for syscall numbers.
 //
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 #define	CLOCK_MONOTONIC	$3

src/runtime/sys_openbsd_amd64.s

@@ -6,7 +6,8 @@
 // /usr/src/sys/kern/syscalls.master for syscall numbers.
 //
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 #define CLOCK_MONOTONIC	$3

src/runtime/sys_plan9_386.s

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 // setldt(int entry, int address, int limit)

src/runtime/sys_plan9_amd64.s

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 // setldt(int entry, int address, int limit)

src/runtime/sys_solaris_amd64.s

@@ -6,7 +6,8 @@
 // /usr/include/sys/syscall.h for syscall numbers.
 //
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 // This is needed by asm_amd64.s

src/runtime/sys_windows_386.s

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 // void runtime·asmstdcall(void *c);

src/runtime/sys_windows_amd64.s

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 // maxargs should be divisible by 2, as Windows stack

src/runtime/thunk.s

@@ -4,7 +4,6 @@
 
 // This file exposes various internal runtime functions to other packages in std lib.
 
-#include "zasm_GOOS_GOARCH.h"
 #include "textflag.h"
 
 #ifdef GOARCH_arm
@@ -181,3 +180,18 @@ TEXT syscall·runtime_envs(SB),NOSPLIT,$0-0
 
 TEXT os·runtime_args(SB),NOSPLIT,$0-0
 	JMP	runtime·runtime_args(SB)
+
+TEXT sync·runtime_procUnpin(SB),NOSPLIT,$0-0
+	JMP	runtime·sync_procUnpin(SB)
+
+TEXT sync·runtime_procPin(SB),NOSPLIT,$0-0
+	JMP	runtime·sync_procPin(SB)
+
+TEXT syscall·runtime_BeforeFork(SB),NOSPLIT,$0-0
+	JMP	runtime·syscall_BeforeFork(SB)
+
+TEXT syscall·runtime_AfterFork(SB),NOSPLIT,$0-0
+	JMP	runtime·syscall_AfterFork(SB)
+
+TEXT reflect·typelinks(SB),NOSPLIT,$0-0
+	JMP	runtime·typelinks(SB)

src/runtime/thunk_solaris_amd64.s

@@ -4,7 +4,8 @@
 
 // This file exposes various external library functions to Go code in the runtime.
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 TEXT runtime·libc_chdir(SB),NOSPLIT,$0

src/runtime/thunk_windows.s

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 TEXT syscall·Syscall(SB),NOSPLIT,$0-0

src/runtime/tls_arm.s

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "funcdata.h"
 #include "textflag.h"
 

src/runtime/vlop_arm.s

@@ -23,7 +23,8 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#include "zasm_GOOS_GOARCH.h"
+#include "go_asm.h"
+#include "go_tls.h"
 #include "textflag.h"
 
 arg=0