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#ifndef __PK_MACROS_H__
#define __PK_MACROS_H__
//-----------------------------------------------------------------------------
// *! (C) Copyright International Business Machines Corp. 2014
// *! All Rights Reserved -- Property of IBM
// *! *** IBM Confidential ***
//-----------------------------------------------------------------------------
/// \file pk_macros.h
/// \brief Boilerplate macros for PK
/// This macro encapsulates error handling boilerplate for code that uses the
/// PK API-type error handling, for errors that do not occur in critical
/// sections.
#define PK_ERROR(code) \
do { \
if (PK_ERROR_PANIC) { \
PK_PANIC(code); \
} else { \
return -(code); \
} \
} while (0)
/// This macro encapsulates error handling boilerplate in the PK API
/// functions, for errors that do not occur in critical sections.
#define PK_ERROR_IF(condition, code) \
do { \
if (condition) { \
PK_ERROR(code); \
} \
} while (0)
/// This macro encapsulates error handling boilerplate in the PK API
/// functions, for errors that do not occur in critical sections and always
/// force a kernel panic, indicating a kernel or API bug.
#define PK_PANIC_IF(condition, code) \
do { \
if (condition) { \
PK_PANIC(code); \
} \
} while (0)
/// This macro encapsulates error handling boilerplate in the PK API
/// functions, for errors that do not occur in critical sections.
/// The error handling will only be enabled when PK_ERROR_CHECK_API
/// is enabled.
#define PK_ERROR_IF_CHECK_API(condition, code) \
do { \
if (PK_ERROR_CHECK_API) { \
PK_ERROR_IF(condition, code); \
} \
} while (0)
/// This macro encapsulates error handling boilerplate in the PK API
/// functions, for errors that occur in critical sections.
#define PK_ERROR_IF_CRITICAL(condition, code, context) \
do { \
if (condition) { \
if (PK_ERROR_PANIC) { \
PK_PANIC(code); \
pk_critical_section_exit(context); \
} else { \
pk_critical_section_exit(context); \
return -(code); \
} \
} \
} while (0)
/// This is a general macro for errors that require cleanup before returning
/// the error code.
#define PK_ERROR_IF_CLEANUP(condition, code, cleanup) \
do { \
if (condition) { \
if (PK_ERROR_PANIC) { \
PK_PANIC(code); \
cleanup; \
} else { \
cleanup; \
return -(code); \
} \
} \
} while (0)
/// Some PK APIs can only be called from thread contexts - these are APIs
/// that threads call on 'themselves'.
#define PK_ERROR_UNLESS_THREAD_CONTEXT() \
PK_ERROR_IF(!__pk_kernel_context_thread(), \
PK_ILLEGAL_CONTEXT_THREAD_CONTEXT)
/// Some PK APIs must be called from an interrupt context only.
#define PK_ERROR_UNLESS_ANY_INTERRUPT_CONTEXT() \
PK_ERROR_IF(!__pk_kernel_context_any_interrupt(), \
PK_ILLEGAL_CONTEXT_INTERRUPT_CONTEXT)
#endif /* __PK_MACROS_H__ */
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