46 lines
820 B
C
46 lines
820 B
C
#include <stdint.h>
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#include <stddef.h>
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#include <stdbool.h>
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#include <mm/vmm.h>
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#if bios == 1
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# include <sys/idt.h>
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#endif
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__attribute__((noreturn)) void multiboot1_spinup_32(
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uint32_t entry_point, uint32_t multiboot1_info) {
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#if bios == 1
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struct idtr idtr;
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idtr.limit = 0x3ff;
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idtr.ptr = 0;
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asm volatile (
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"lidt %0"
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:
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: "m" (idtr)
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: "memory"
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);
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#endif
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asm volatile (
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"cld\n\t"
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"push %2\n\t"
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"xor %%ecx, %%ecx\n\t"
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"xor %%edx, %%edx\n\t"
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"xor %%esi, %%esi\n\t"
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"xor %%edi, %%edi\n\t"
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"xor %%ebp, %%ebp\n\t"
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"ret\n\t"
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:
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: "a" (0x2badb002),
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"b" (multiboot1_info),
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"r" (entry_point)
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: "memory"
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);
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__builtin_unreachable();
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}
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