diff options
Diffstat (limited to 'src/pkg/syscall/asm_freebsd_386.s')
| -rw-r--r-- | src/pkg/syscall/asm_freebsd_386.s | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/src/pkg/syscall/asm_freebsd_386.s b/src/pkg/syscall/asm_freebsd_386.s new file mode 100644 index 000000000..f2d4438a1 --- /dev/null +++ b/src/pkg/syscall/asm_freebsd_386.s @@ -0,0 +1,137 @@ +// 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. + +// +// System call support for 386, FreeBSD +// + +// func Syscall(trap int32, a1, a2, a3 int32) (r1, r2, err int32); +// func Syscall6(trap int32, a1, a2, a3, a4, a5, a6 int32) (r1, r2, err int32); +// Trap # in AX, args on stack above caller pc. + +TEXT ·Syscall(SB),7,$0 + CALL runtime·entersyscall(SB) + MOVL 4(SP), AX // syscall entry + // slide args down on top of system call number + LEAL 8(SP), SI + LEAL 4(SP), DI + CLD + MOVSL + MOVSL + MOVSL + INT $0x80 + JAE ok + MOVL $-1, 20(SP) // r1 + MOVL $-1, 24(SP) // r2 + MOVL AX, 28(SP) // errno + CALL runtime·exitsyscall(SB) + RET +ok: + MOVL AX, 20(SP) // r1 + MOVL DX, 24(SP) // r2 + MOVL $0, 28(SP) // errno + CALL runtime·exitsyscall(SB) + RET + +TEXT ·Syscall6(SB),7,$0 + CALL runtime·entersyscall(SB) + MOVL 4(SP), AX // syscall entry + // slide args down on top of system call number + LEAL 8(SP), SI + LEAL 4(SP), DI + CLD + MOVSL + MOVSL + MOVSL + MOVSL + MOVSL + MOVSL + INT $0x80 + JAE ok6 + MOVL $-1, 32(SP) // r1 + MOVL $-1, 36(SP) // r2 + MOVL AX, 40(SP) // errno + CALL runtime·exitsyscall(SB) + RET +ok6: + MOVL AX, 32(SP) // r1 + MOVL DX, 36(SP) // r2 + MOVL $0, 40(SP) // errno + CALL runtime·exitsyscall(SB) + RET + +TEXT ·Syscall9(SB),7,$0 + CALL runtime·entersyscall(SB) + MOVL 4(SP), AX // syscall entry + // slide args down on top of system call number + LEAL 8(SP), SI + LEAL 4(SP), DI + CLD + MOVSL + MOVSL + MOVSL + MOVSL + MOVSL + MOVSL + MOVSL + MOVSL + MOVSL + INT $0x80 + JAE ok9 + MOVL $-1, 44(SP) // r1 + MOVL $-1, 48(SP) // r2 + MOVL AX, 52(SP) // errno + CALL runtime·exitsyscall(SB) + RET +ok9: + MOVL AX, 44(SP) // r1 + MOVL DX, 48(SP) // r2 + MOVL $0, 52(SP) // errno + CALL runtime·exitsyscall(SB) + RET + +TEXT ·RawSyscall(SB),7,$0 + MOVL 4(SP), AX // syscall entry + // slide args down on top of system call number + LEAL 8(SP), SI + LEAL 4(SP), DI + CLD + MOVSL + MOVSL + MOVSL + INT $0x80 + JAE ok1 + MOVL $-1, 20(SP) // r1 + MOVL $-1, 24(SP) // r2 + MOVL AX, 28(SP) // errno + RET +ok1: + MOVL AX, 20(SP) // r1 + MOVL DX, 24(SP) // r2 + MOVL $0, 28(SP) // errno + RET + +TEXT ·RawSyscall6(SB),7,$0 + MOVL 4(SP), AX // syscall entry + // slide args down on top of system call number + LEAL 8(SP), SI + LEAL 4(SP), DI + CLD + MOVSL + MOVSL + MOVSL + MOVSL + MOVSL + MOVSL + INT $0x80 + JAE ok2 + MOVL $-1, 32(SP) // r1 + MOVL $-1, 36(SP) // r2 + MOVL AX, 40(SP) // errno + RET +ok2: + MOVL AX, 32(SP) // r1 + MOVL DX, 36(SP) // r2 + MOVL $0, 40(SP) // errno + RET |