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#ifndef ARCH_AARCH64_CONTEXT_H
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#define ARCH_AARCH64_CONTEXT_H
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#include <unistd.h>
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#include <ucontext.h>
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typedef uint64_t reg_t;
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#define ARCH_NREGS 31 // TODO: aarch64 context-switch assembly and registers!
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/*
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* This is the slowpath switch to a preempted sandbox!
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* SIGUSR1 on the current thread and restore mcontext there!
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*/
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extern void __attribute__((noreturn)) sandbox_switch_preempt(void);
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struct arch_context {
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reg_t regs[ARCH_NREGS];
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mcontext_t mctx;
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};
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typedef struct arch_context arch_context_t;
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extern __thread arch_context_t base_context;
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static inline void
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arch_context_init(arch_context_t *actx, reg_t ip, reg_t sp)
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{
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memset(&actx->mctx, 0, sizeof(mcontext_t));
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memset((void *)actx->regs, 0, sizeof(reg_t) * ARCH_NREGS);
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}
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static inline int
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arch_context_switch(arch_context_t *ca, arch_context_t *na)
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{
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return 0;
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}
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#endif /* ARCH_AARCH64_CONTEXT_H */
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