Adding upstream version 1.22.1.upstream/1.22.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 123 insertions, 0 deletions

diff --git a/src/syscall/asm_linux_386.s b/src/syscall/asm_linux_386.s
new file mode 100644
index 0000000..d14df50
--- /dev/null
+++ b/src/syscall/asm_linux_386.s
@@ -0,0 +1,123 @@
+// Copyright 2009 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 "textflag.h"
+#include "funcdata.h"
+
+//
+// System calls for 386, Linux
+//
+
+// See ../runtime/sys_linux_386.s for the reason why we always use int 0x80
+// instead of the glibc-specific "CALL 0x10(GS)".
+#define INVOKE_SYSCALL	INT	$0x80
+
+// func rawVforkSyscall(trap, a1, a2, a3 uintptr) (r1, err uintptr)
+TEXT ·rawVforkSyscall(SB),NOSPLIT|NOFRAME,$0-24
+	MOVL	trap+0(FP), AX	// syscall entry
+	MOVL	a1+4(FP), BX
+	MOVL	a2+8(FP), CX
+	MOVL	a3+12(FP), DX
+	POPL	SI // preserve return address
+	INVOKE_SYSCALL
+	PUSHL	SI
+	CMPL	AX, $0xfffff001
+	JLS	ok
+	MOVL	$-1, r1+16(FP)
+	NEGL	AX
+	MOVL	AX, err+20(FP)
+	RET
+ok:
+	MOVL	AX, r1+16(FP)
+	MOVL	$0, err+20(FP)
+	RET
+
+// func rawSyscallNoError(trap uintptr, a1, a2, a3 uintptr) (r1, r2 uintptr);
+TEXT ·rawSyscallNoError(SB),NOSPLIT,$0-24
+	MOVL	trap+0(FP), AX	// syscall entry
+	MOVL	a1+4(FP), BX
+	MOVL	a2+8(FP), CX
+	MOVL	a3+12(FP), DX
+	MOVL	$0, SI
+	MOVL	$0, DI
+	INVOKE_SYSCALL
+	MOVL	AX, r1+16(FP)
+	MOVL	DX, r2+20(FP)
+	RET
+
+#define SYS_SOCKETCALL 102	/* from zsysnum_linux_386.go */
+
+// func socketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (n int, err int)
+// Kernel interface gets call sub-number and pointer to a0.
+TEXT ·socketcall(SB),NOSPLIT,$0-36
+	CALL	runtime·entersyscall(SB)
+	MOVL	$SYS_SOCKETCALL, AX	// syscall entry
+	MOVL	call+0(FP), BX	// socket call number
+	LEAL	a0+4(FP), CX	// pointer to call arguments
+	MOVL	$0, DX
+	MOVL	$0, SI
+	MOVL	$0, DI
+	INVOKE_SYSCALL
+	CMPL	AX, $0xfffff001
+	JLS	oksock
+	MOVL	$-1, n+28(FP)
+	NEGL	AX
+	MOVL	AX, err+32(FP)
+	CALL	runtime·exitsyscall(SB)
+	RET
+oksock:
+	MOVL	AX, n+28(FP)
+	MOVL	$0, err+32(FP)
+	CALL	runtime·exitsyscall(SB)
+	RET
+
+// func rawsocketcall(call int, a0, a1, a2, a3, a4, a5 uintptr) (n int, err int)
+// Kernel interface gets call sub-number and pointer to a0.
+TEXT ·rawsocketcall(SB),NOSPLIT,$0-36
+	MOVL	$SYS_SOCKETCALL, AX	// syscall entry
+	MOVL	call+0(FP), BX	// socket call number
+	LEAL		a0+4(FP), CX	// pointer to call arguments
+	MOVL	$0, DX
+	MOVL	$0, SI
+	MOVL	$0, DI
+	INVOKE_SYSCALL
+	CMPL	AX, $0xfffff001
+	JLS	oksock1
+	MOVL	$-1, n+28(FP)
+	NEGL	AX
+	MOVL	AX, err+32(FP)
+	RET
+oksock1:
+	MOVL	AX, n+28(FP)
+	MOVL	$0, err+32(FP)
+	RET
+
+#define SYS__LLSEEK 140	/* from zsysnum_linux_386.go */
+// func Seek(fd int, offset int64, whence int) (newoffset int64, err int)
+// Implemented in assembly to avoid allocation when
+// taking the address of the return value newoffset.
+// Underlying system call is
+//	llseek(int fd, int offhi, int offlo, int64 *result, int whence)
+TEXT ·seek(SB),NOSPLIT,$0-28
+	CALL	runtime·entersyscall(SB)
+	MOVL	$SYS__LLSEEK, AX	// syscall entry
+	MOVL	fd+0(FP), BX
+	MOVL	offset_hi+8(FP), CX
+	MOVL	offset_lo+4(FP), DX
+	LEAL	newoffset_lo+16(FP), SI	// result pointer
+	MOVL	whence+12(FP), DI
+	INVOKE_SYSCALL
+	CMPL	AX, $0xfffff001
+	JLS	okseek
+	MOVL	$-1, newoffset_lo+16(FP)
+	MOVL	$-1, newoffset_hi+20(FP)
+	NEGL	AX
+	MOVL	AX, err+24(FP)
+	CALL	runtime·exitsyscall(SB)
+	RET
+okseek:
+	// system call filled in newoffset already
+	MOVL	$0, err+24(FP)
+	CALL	runtime·exitsyscall(SB)
+	RET