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+++ Libc/Libc-498/ppc/sys/SYS.h
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+/*
+ * Copyright (c) 1999-2004 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+/* Copyright (c) 1992 NeXT Computer, Inc. All rights reserved.
+ *
+ * File: SYS.h
+ *
+ * Definition of the user side of the UNIX system call interface
+ * for M98K.
+ *
+ * Errors are flagged by the location of the trap return (ie., which
+ * instruction is executed upon rfi):
+ *
+ * SC PC + 4: Error (typically branch to cerror())
+ * SC PC + 8: Success
+ *
+ * HISTORY
+ * 18-Nov-92 Ben Fathi (benf@next.com)
+ * Ported to m98k.
+ *
+ * 9-Jan-92 Peter King (king@next.com)
+ * Created.
+ */
+
+/*
+ * Header files.
+ */
+#include <architecture/ppc/mode_independent_asm.h>
+#import <sys/syscall.h>
+
+/* From rhapsody kernel mach/ppc/syscall_sw.h */
+#define kernel_trap_args_0
+#define kernel_trap_args_1
+#define kernel_trap_args_2
+#define kernel_trap_args_3
+#define kernel_trap_args_4
+#define kernel_trap_args_5
+#define kernel_trap_args_6
+#define kernel_trap_args_7
+
+/*
+ * simple_kernel_trap -- Mach system calls with 8 or less args
+ * Args are passed in a0 - a7, system call number in r0.
+ * Do a "sc" instruction to enter kernel.
+ */
+#define simple_kernel_trap(trap_name, trap_number) \
+ .globl _##trap_name @\
+_##trap_name: @\
+ li r0,trap_number @\
+ sc @\
+ blr
+
+#define kernel_trap_0(trap_name,trap_number) \
+ simple_kernel_trap(trap_name,trap_number)
+
+#define kernel_trap_1(trap_name,trap_number) \
+ simple_kernel_trap(trap_name,trap_number)
+
+#define kernel_trap_2(trap_name,trap_number) \
+ simple_kernel_trap(trap_name,trap_number)
+
+#define kernel_trap_3(trap_name,trap_number) \
+ simple_kernel_trap(trap_name,trap_number)
+
+#define kernel_trap_4(trap_name,trap_number) \
+ simple_kernel_trap(trap_name,trap_number)
+
+#define kernel_trap_5(trap_name,trap_number) \
+ simple_kernel_trap(trap_name,trap_number)
+
+#define kernel_trap_6(trap_name,trap_number) \
+ simple_kernel_trap(trap_name,trap_number)
+
+#define kernel_trap_7(trap_name,trap_number) \
+ simple_kernel_trap(trap_name,trap_number)
+
+#define kernel_trap_8(trap_name,trap_number) \
+ simple_kernel_trap(trap_name,trap_number)
+
+#define kernel_trap_9(trap_name,trap_number) \
+ simple_kernel_trap(trap_name,trap_number)
+
+/* End of rhapsody kernel mach/ppc/syscall_sw.h */
+
+/*
+ * Macros.
+ */
+
+/*
+ * This is the same as SYSCALL, but it can call an alternate error
+ * return function. It's generic to support potential future callers.
+ */
+#define SYSCALL_ERR(name, nargs, error_ret) \
+ .globl error_ret @\
+ MI_ENTRY_POINT(_##name) @\
+ kernel_trap_args_##nargs @\
+ li r0,SYS_##name @\
+ sc @\
+ b 1f @\
+ blr @\
+1: MI_BRANCH_EXTERNAL(error_ret)
+
+#define SYSCALL(name, nargs) \
+ .globl cerror @\
+ MI_ENTRY_POINT(_##name) @\
+ kernel_trap_args_##nargs @\
+ li r0,SYS_##name @\
+ sc @\
+ b 1f @\
+ blr @\
+1: MI_BRANCH_EXTERNAL(cerror)
+
+
+#define SYSCALL_NONAME(name, nargs) \
+ .globl cerror @\
+ kernel_trap_args_##nargs @\
+ li r0,SYS_##name @\
+ sc @\
+ b 1f @\
+ b 2f @\
+1: MI_BRANCH_EXTERNAL(cerror) @\
+2:
+
+
+#define PSEUDO(pseudo, name, nargs) \
+ .globl _##pseudo @\
+ .text @\
+ .align 2 @\
+_##pseudo: @\
+ SYSCALL_NONAME(name, nargs)
+
+#define PSEUDO_ERR(pseudo, name, nargs, error_ret) \
+ .globl _##pseudo @\
+ .globl error_ret @\
+ .text @\
+ .align 2 @\
+_##pseudo: @\
+ kernel_trap_args_##nargs @\
+ li r0,SYS_##name @\
+ sc @\
+ b 1f @\
+ blr @\
+1: MI_BRANCH_EXTERNAL(error_ret)
+
+
+#undef END
+#import <mach/ppc/syscall_sw.h>