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/*
* Copyright (c) 2023 Free Software Foundation, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _PERCPU_H_
#define _PERCPU_H_
struct percpu;
#if NCPUS > 1
#define percpu_assign(stm, val) \
asm("mov %[src], %%gs:%c[offs]" \
: /* No outputs */ \
: [src] "r" (val), [offs] "e" (__builtin_offsetof(struct percpu, stm)) \
: );
#define percpu_get(typ, stm) \
MACRO_BEGIN \
typ val_; \
\
asm("mov %%gs:%c[offs], %[dst]" \
: [dst] "=r" (val_) \
: [offs] "e" (__builtin_offsetof(struct percpu, stm)) \
: ); \
\
val_; \
MACRO_END
#define percpu_ptr(typ, stm) \
MACRO_BEGIN \
typ *ptr_ = (typ *)__builtin_offsetof(struct percpu, stm); \
\
asm("add %%gs:0, %[pointer]" \
: [pointer] "+r" (ptr_) \
: /* No inputs */ \
: ); \
\
ptr_; \
MACRO_END
#else
#define percpu_assign(stm, val) \
MACRO_BEGIN \
percpu_array[0].stm = val; \
MACRO_END
#define percpu_get(typ, stm) \
(percpu_array[0].stm)
#define percpu_ptr(typ, stm) \
(&percpu_array[0].stm)
#endif
#include <kern/processor.h>
#include <mach/mach_types.h>
struct percpu {
struct percpu *self;
int apic_id;
int cpu_id;
struct processor processor;
thread_t active_thread;
vm_offset_t active_stack;
/*
struct machine_slot machine_slot;
struct mp_desc_table mp_desc_table;
vm_offset_t int_stack_top;
vm_offset_t int_stack_base;
ast_t need_ast;
ipc_kmsg_t ipc_kmsg_cache;
pmap_update_list cpu_update_list;
spl_t saved_ipl;
spl_t curr_ipl;
timer_data_t kernel_timer;
timer_t current_timer;
unsigned long in_interrupt;
*/
};
extern struct percpu percpu_array[NCPUS];
void init_percpu(int cpu);
#endif /* _PERCPU_H_ */
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