alexvoste
56 lines
2.0 KiB
C
56 lines
2.0 KiB
C
#ifndef PERCPU_H
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#define PERCPU_H
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#include <stdint.h>
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#include "../include/smp/smp.h"
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#define PERCPU_SECTION __attribute__((section(".percpu")))
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typedef struct {
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uint64_t syscall_kernel_rsp;
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uint64_t syscall_user_rsp;
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uint32_t cpu_id;
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uint32_t _pad;
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void* current_task;
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uint64_t some_counter;
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bool need_resched;
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uint8_t _pad2[7];
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uint64_t user_saved_rbp;
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uint64_t user_saved_rbx;
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uint64_t user_saved_r12;
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uint64_t user_saved_r13;
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uint64_t user_saved_r14;
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uint64_t user_saved_r15;
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uint64_t user_saved_r11;
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uint64_t user_saved_rip;
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uint8_t _pad3[8];
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void* deferred_free_task;
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uint64_t sched_stack_top;
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} __attribute__((aligned(64))) percpu_t;
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_Static_assert(__builtin_offsetof(percpu_t, syscall_kernel_rsp) == 0, "percpu: kernel_rsp");
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_Static_assert(__builtin_offsetof(percpu_t, syscall_user_rsp) == 8, "percpu: user_rsp");
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_Static_assert(__builtin_offsetof(percpu_t, current_task) == 24, "percpu: current_task");
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_Static_assert(__builtin_offsetof(percpu_t, need_resched) == 40, "percpu: need_resched");
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_Static_assert(__builtin_offsetof(percpu_t, user_saved_rbp) == 48, "percpu: saved_rbp");
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_Static_assert(__builtin_offsetof(percpu_t, user_saved_rbx) == 56, "percpu: saved_rbx");
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_Static_assert(__builtin_offsetof(percpu_t, user_saved_r12) == 64, "percpu: saved_r12");
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_Static_assert(__builtin_offsetof(percpu_t, user_saved_r13) == 72, "percpu: saved_r13");
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_Static_assert(__builtin_offsetof(percpu_t, user_saved_r14) == 80, "percpu: saved_r14");
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_Static_assert(__builtin_offsetof(percpu_t, user_saved_r15) == 88, "percpu: saved_r15");
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_Static_assert(__builtin_offsetof(percpu_t, user_saved_r11) == 96, "percpu: saved_r11");
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_Static_assert(__builtin_offsetof(percpu_t, user_saved_rip) == 104, "percpu: saved_rip");
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extern percpu_t percpu;
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extern percpu_t* percpu_regions[MAX_CPUS];
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extern bool g_has_fsgsbase;
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percpu_t* get_percpu(void);
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percpu_t* get_percpu_mut(void);
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void init_percpu_regions(void);
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void set_percpu_base(percpu_t* base);
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#define current_cpu_id() (get_percpu()->cpu_id)
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#endif
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