79da079239
This commit also converts our own copyright headers to directly use SPDX, but leaves all other copyright header intact, only adding the SPDX ident. As far as possible this commit also merges multiple Data61 copyright statements/headers into one for consistency.
39 lines
907 B
C
39 lines
907 B
C
/*
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* Copyright 2020, Data61, CSIRO (ABN 41 687 119 230)
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*
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* SPDX-License-Identifier: GPL-2.0-only
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*/
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#ifndef __MODE_SMP_H_
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#define __MODE_SMP_H_
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#include <config.h>
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#ifdef ENABLE_SMP_SUPPORT
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#define LD_EX "ldrex "
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#define ST_EX "strex "
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#define OP_WIDTH
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extern char kernel_stack_alloc[CONFIG_MAX_NUM_NODES][BIT(CONFIG_KERNEL_STACK_BITS)];
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/* Get current stack pointer */
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static inline word_t getCurSP(void)
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{
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word_t stack_address;
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asm("mov %[stack_address], %[currStackAddress]" : [stack_address] "=r"(stack_address) : [currStackAddress] "r"(&stack_address):);
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return stack_address;
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}
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static inline CONST cpu_id_t getCurrentCPUIndex(void)
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{
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cpu_id_t cpu_id;
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word_t sp = getCurSP();
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sp -= (word_t) kernel_stack_alloc;
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cpu_id = sp >> CONFIG_KERNEL_STACK_BITS;
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return cpu_id;
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}
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#endif /* ENABLE_SMP_SUPPORT */
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#endif /* __MODE_SMP_H_ */
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