eb1ef50b6b
There was a bunch of dead historical cruft floating around in the arch/xtensa tree, left over from older code versions. It's time to do a cleanup pass. This is entirely refactoring and size optimization, no behavior changes on any in-tree devices should be present. Among the more notable changes: + xtensa_context.h offered an elaborate API to deal with a stack frame and context layout that we no longer use. + xtensa_rtos.h was entirely dead code + xtensa_timer.h was a parallel abstraction layer implementing in the architecture layer what we're already doing in our timer driver. + The architecture thread structs (_callee_saved and _thread_arch) aren't used by current code, and had dead fields that were removed. Unfortunately for standards compliance and C++ compatibility it's not possible to leave an empty struct here, so they have a single byte field. + xtensa_api.h was really just some interrupt management inlines used by irq.h, so fold that code into the outer header. + Remove the stale assembly offsets. This architecture doesn't use that facility. All told, more than a thousand lines have been removed. Not bad. Signed-off-by: Andy Ross <andrew.j.ross@intel.com>
41 lines
843 B
C
41 lines
843 B
C
/*
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* Copyright (c) 2014 Wind River Systems, Inc.
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* Copyright (c) 2016 Cadence Design Systems, Inc.
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief Xtensa public exception handling
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*
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* Xtensa-specific kernel exception handling interface. Included by
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* arch/xtensa/arch.h.
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*/
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#ifndef ZEPHYR_INCLUDE_ARCH_XTENSA_EXC_H_
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#define ZEPHYR_INCLUDE_ARCH_XTENSA_EXC_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef _ASMLANGUAGE
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/* Xtensa uses a variable length stack frame depending on how many
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* register windows are in use. This isn't a struct type, it just
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* matches the register/stack-unit width.
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*/
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typedef int z_arch_esf_t;
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void z_xtensa_dump_stack(const z_arch_esf_t *stack);
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char *z_xtensa_exccause(unsigned int cause_code);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* ZEPHYR_INCLUDE_ARCH_XTENSA_EXC_H_ */
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