/*
* Copyright (c) 2000-2007 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_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. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* 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_OSREFERENCE_LICENSE_HEADER_END@
*/
#ifndef _MACHINE_TRAP_H
#define _MACHINE_TRAP_H
#if defined (__i386__) || defined (__x86_64__)
#include "i386/trap.h"
#elif defined (__arm__) || defined (__arm64__)
#include "arm/trap.h"
#else
#error architecture not supported
#endif
#define ml_trap_pin_value_1(a) ({ \
register long _a __asm__(ML_TRAP_REGISTER_1) = (long)(a); \
\
__asm__ __volatile__ ("" : "+r"(_a)); \
})
#define ml_trap_pin_value_2(a, b) ({ \
register long _a __asm__(ML_TRAP_REGISTER_1) = (long)(a); \
register long _b __asm__(ML_TRAP_REGISTER_2) = (long)(b); \
\
__asm__ __volatile__ ("" : "+r"(_a), "+r"(_b)); \
})
#define ml_trap_pin_value_3(a, b, c) ({ \
register long _a __asm__(ML_TRAP_REGISTER_1) = (long)(a); \
register long _b __asm__(ML_TRAP_REGISTER_2) = (long)(b); \
register long _c __asm__(ML_TRAP_REGISTER_3) = (long)(c); \
\
__asm__ __volatile__ ("" : "+r"(_a), "+r"(_b), "+r"(_c)); \
})
#ifndef __BUILDING_XNU_LIB_UNITTEST__
#define ml_fatal_trap_with_value(code, a) ({ \
ml_trap_pin_value_1(a); \
ml_fatal_trap(code); \
})
#define ml_fatal_trap_with_value2(code, a, b) ({ \
ml_trap_pin_value_2(a, b); \
ml_fatal_trap(code); \
})
#define ml_fatal_trap_with_value3(code, a, b, c) ({ \
ml_trap_pin_value_3(a, b, c); \
ml_fatal_trap(code); \
})
#else /* __BUILDING_XNU_LIB_UNITTEST__ */
/* assert trap call into unit-test harness instead of calling brk */
#ifdef __cplusplus
extern "C"
#else
extern
#endif
__attribute__((noreturn)) void ut_assert_trap(int code, long a, long b, long c);
#define ml_fatal_trap_with_value(code, a) ({ \
ut_assert_trap(code, (long)a, 0, 0); \
})
#define ml_fatal_trap_with_value2(code, a) ({ \
ut_assert_trap(code, (long)a, (long)b, 0); \
})
#define ml_fatal_trap_with_value3(code, a, b, c) ({ \
ut_assert_trap(code, (long)a, (long)b, (long)c); \
})
#endif /* __BUILDING_XNU_LIB_UNITTEST__ */
/*
* Used for when `e` failed a linked list safe unlinking check.
* On optimized builds, `e`'s value will be in:
* - %rax for Intel
* - x8 for arm64
* - r8 on armv7
*/
__attribute__((cold, noreturn, always_inline))
static inline void
ml_fatal_trap_invalid_list_linkage(unsigned long e)
{
ml_fatal_trap_with_value(/* XNU_HARD_TRAP_SAFE_UNLINK */ 0xbffd, e);
}
#endif /* _MACHINE_TRAP_H */