b2ec036055
+ vmm: higher half should not be identify-mapped + panic: now displays current process + kernel: fix physical addresses (ḑ̷̩̜̦̥̰͔̻͔̖͎̳̗̫̓̓͊́̒͜ơ̸͙͎̠͎̩̤̭̬̙͚̬̣͇̤̼̑̐̿̿͆͠͝ ̷̗̟̘͎̥̤̭̂͛͆́͂͝͠ͅN̴̨̛̥̩̺͚̺̠͙̼̙̯̱͚̫̊̐̅̀̌̏͆̋̕͜͝͠ͅö̵̪͚̞̞̜͎͉̦́́̍̀̃̋̇̄̓͊̎͝t̶̡͍̩̤̹̤̂̑̓͌͂̾̑̈́͒̾̾́͐͆͊͂ ̴̨̫̺̦̊̍̒͛͌̌͂͘̚̚͘͘͝I̶̥͚̯̖̙̩͂́͜d̸̢̡̗͉̠̹̒͠e̸̡̪̺͎͖͚̗̟̟̥͍͑̈̋̉̋̓̐̊̚͘͜n̸̡̍͐͗̈͌̀̓̃́́͠t̶̢͈͈̦̻̰͎̪̰̒̄͒̃̐͜ĩ̴͕̼̻͓͚͕̲̬̤͈̜̣̐̍́̾̀̏̏̑͒̚ͅf̷̡̨̼̻̠̠͔̪͍͛y̴͉͓̓͒̆̎̚ ̶̟͙͖̙̟͍̟͕̞̥̹͇̌̉́̑͗͋̀̕ͅͅM̷͙̬̲̓a̶̫̰̞̺̖̍̀p̶̡̨̡̗̖̹̩̫̯̞̬͋͂̏̍̾̽͜ͅ ̶̧̨̧̫͉̝̮̳͎͍̱̟̪̝̀̽͑̂̿̄̈̇̓͘Ḫ̶̨̨̗̣̪͓̺͙͈͙̀ḭ̶̧̡͇̹͙̩͍͎̮̤̦̜̻͎̞̔̐̇̉̓͒͛̅̿͊̍͆͘̕g̷͖͙͍͓̯̪̩̑̑͋̈́͌͐̊̀͝͠͝ĥ̴̢̡̫̪̟̞̭̟͕̖͎͊͑͛̆͝e̴̡̨̗̱̱͙͔̻̤͎͆̒̾̾̓̈͊̓ͅr̵̛͈̩͍̔̌̃̇͊̽̀̉̽̊͌̿́ ̷̨̡̛̩̹̹̇̇̈́̑̍̊͒̄́͛H̷̨̪̜̤͍̻͎̲̜͋́̆͋̂̚͘͘͜͠ą̷̠͓̫̲́́̽̉̒͌́̓ͅl̴̢̛͈̤̺̱̙̬̆̎̄̊̈́̐̾̏̿̕f̸̢̰͓̦̺̰̯͚̣̙͔̺̂͜͜)
52 lines
No EOL
1.4 KiB
C
52 lines
No EOL
1.4 KiB
C
#include "arch/x86_64/smp.h"
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#include "lib/spinlock.h"
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#include "limine.h"
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#include "sys/log.h"
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#include <stdint.h>
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__attribute__((
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used, section(".limine_requests"))) static volatile struct limine_mp_request
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smp_request = {.id = LIMINE_MP_REQUEST, .revision = 0};
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uint32_t bootstrap_lapic_id = 0;
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uint32_t smp_cpu_count = 0; // Number of processors
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spinlock_t smp_lock = {0};
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uint32_t ctr = 0;
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void smp_entry(struct limine_mp_info *smp_info) {
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// spinlock_acquire(&smp_lock);
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log("smp - CPU %d started (LAPIC ID: %d)\n", smp_info->processor_id,
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smp_info->lapic_id);
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__atomic_fetch_add(&ctr, 1, __ATOMIC_SEQ_CST);
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while (1)
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;
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;
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// spinlock_release(&smp_lock);
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}
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void smp_init() {
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bootstrap_lapic_id = smp_request.response->bsp_lapic_id;
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smp_cpu_count = smp_request.response->cpu_count;
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log("smp - detected %d CPUs\n", smp_cpu_count);
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for (uint64_t i = 0; i < smp_cpu_count; i++) {
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if (smp_request.response->cpus[i]->lapic_id != bootstrap_lapic_id) {
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uint32_t old_ctr = __atomic_load_n(&ctr, __ATOMIC_SEQ_CST);
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__atomic_store_n(&smp_request.response->cpus[i]->goto_address, smp_entry,
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__ATOMIC_SEQ_CST);
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while (__atomic_load_n(&ctr, __ATOMIC_SEQ_CST) == old_ctr)
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;
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} else {
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log("smp - CPU %d is the bootstrap processor (LAPIC ID: %d)\n", i,
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smp_request.response->cpus[i]->lapic_id);
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}
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}
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log("smp - initialized\n");
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} |