go.sys: copy files from syscall package to go.sys/{plan9,windows,unix}
This CL copies to each package of go.sys the files from syscall it will need.
Different directories have different files, but these:
mkall.sh
str.go
syscall.go
mksyscall.pl
race.go
race0.go
syscall_test.go
are copied to all three.
No changes yet, these are just copies. They are not ready to use yet:
package names are wrong, for starters. But this clean copy will make
it easier to follow the changes as the packages are enabled.
LGTM=rsc
R=golang-codereviews, rsc
CC=golang-codereviews
https://golang.org/cl/126960043
diff --git a/unix/asm_freebsd_arm.s b/unix/asm_freebsd_arm.s
new file mode 100644
index 0000000..c01ce6f
--- /dev/null
+++ b/unix/asm_freebsd_arm.s
@@ -0,0 +1,129 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "../../cmd/ld/textflag.h"
+
+//
+// System call support for ARM, FreeBSD
+//
+
+// func Syscall(trap, a1, a2, a3 uintptr) (r1, r2, errno uintptr);
+// func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, errno uintptr);
+// func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2, errno uintptr)
+
+TEXT ·Syscall(SB),NOSPLIT,$0-28
+ BL runtime·entersyscall(SB)
+ MOVW 0(FP), R7 // syscall number
+ MOVW 4(FP), R0 // a1
+ MOVW 8(FP), R1 // a2
+ MOVW 12(FP), R2 // a3
+ SWI $0 // syscall
+ MOVW $0, R2
+ BCS error
+ MOVW R0, 16(FP) // r1
+ MOVW R1, 20(FP) // r2
+ MOVW R2, 24(FP) // errno
+ BL runtime·exitsyscall(SB)
+ RET
+error:
+ MOVW $-1, R3
+ MOVW R3, 16(FP) // r1
+ MOVW R2, 20(FP) // r2
+ MOVW R0, 24(FP) // errno
+ BL runtime·exitsyscall(SB)
+ RET
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-40
+ BL runtime·entersyscall(SB)
+ MOVW 0(FP), R7 // syscall number
+ MOVW 4(FP), R0 // a1
+ MOVW 8(FP), R1 // a2
+ MOVW 12(FP), R2 // a3
+ MOVW 16(FP), R3 // a4
+ MOVW R13, R4
+ MOVW $20(FP), R13 // a5 to a6 are passed on stack
+ SWI $0 // syscall
+ MOVW R4, R13
+ MOVW $0, R2
+ BCS error6
+ MOVW R0, 28(FP) // r1
+ MOVW R1, 32(FP) // r2
+ MOVW R2, 36(FP) // errno
+ BL runtime·exitsyscall(SB)
+ RET
+error6:
+ MOVW $-1, R3
+ MOVW R3, 28(FP) // r1
+ MOVW R2, 32(FP) // r2
+ MOVW R0, 36(FP) // errno
+ BL runtime·exitsyscall(SB)
+ RET
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-52
+ BL runtime·entersyscall(SB)
+ MOVW 0(FP), R7 // syscall number
+ MOVW 4(FP), R0 // a1
+ MOVW 8(FP), R1 // a2
+ MOVW 12(FP), R2 // a3
+ MOVW 16(FP), R3 // a4
+ MOVW R13, R4
+ MOVW $20(FP), R13 // a5 to a9 are passed on stack
+ SWI $0 // syscall
+ MOVW R4, R13
+ MOVW $0, R2
+ BCS error9
+ MOVW R0, 40(FP) // r1
+ MOVW R1, 44(FP) // r2
+ MOVW R2, 48(FP) // errno
+ BL runtime·exitsyscall(SB)
+ RET
+error9:
+ MOVW $-1, R3
+ MOVW R3, 40(FP) // r1
+ MOVW R2, 44(FP) // r2
+ MOVW R0, 48(FP) // errno
+ BL runtime·exitsyscall(SB)
+ RET
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-28
+ MOVW 0(FP), R7 // syscall number
+ MOVW 4(FP), R0 // a1
+ MOVW 8(FP), R1 // a2
+ MOVW 12(FP), R2 // a3
+ SWI $0 // syscall
+ MOVW $0, R2
+ BCS errorr
+ MOVW R0, 16(FP) // r1
+ MOVW R1, 20(FP) // r2
+ MOVW R2, 24(FP) // errno
+ RET
+errorr:
+ MOVW $-1, R3
+ MOVW R3, 16(FP) // r1
+ MOVW R2, 20(FP) // r2
+ MOVW R0, 24(FP) // errno
+ RET
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
+ MOVW 0(FP), R7 // syscall number
+ MOVW 4(FP), R0 // a1
+ MOVW 8(FP), R1 // a2
+ MOVW 12(FP), R2 // a3
+ MOVW 16(FP), R3 // a4
+ MOVW R13, R4
+ MOVW $20(FP), R13 // a5 to a6 are passed on stack
+ SWI $0 // syscall
+ MOVW R4, R13
+ MOVW $0, R2
+ BCS errorr6
+ MOVW R0, 28(FP) // r1
+ MOVW R1, 32(FP) // r2
+ MOVW R2, 36(FP) // errno
+ RET
+errorr6:
+ MOVW $-1, R3
+ MOVW R3, 28(FP) // r1
+ MOVW R2, 32(FP) // r2
+ MOVW R0, 36(FP) // errno
+ RET
