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84b4a81aeb
Summary of changes: - Use BAD_TYPECHECK to perform type checking in a cleaner way. BAD_TYPECHECK is moved into sysdeps/mach/rpc.h to avoid duplication. - Remove assertions for mach_msg_type_t since those won't work for x86_64. - Update message structs to use mach_msg_type_t directly. - Use designated initializers. Message-Id: <ZFa+roan3ioo0ONM@jupiter.tail36e24.ts.net>
31 lines
1.2 KiB
C
31 lines
1.2 KiB
C
/* Macros for handling Mach RPC messages.
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Copyright (C) 2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <mach/message.h>
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/* Macro used by MIG to cleanly check the type. */
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#define BAD_TYPECHECK(type, check) __glibc_unlikely (({ \
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union { mach_msg_type_t t; uint32_t w; } _t, _c; \
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_t.t = *(type); _c.t = *(check);_t.w != _c.w; }))
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/* TODO: add this assertion for x86_64. */
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#ifndef __x86_64__
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_Static_assert (sizeof (uint32_t) == sizeof (mach_msg_type_t),
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"mach_msg_type_t needs to be the same size as uint32_t");
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#endif
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