A poorly written OS for the x86 arch. (WIP)
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; SRs to find memory size and leave it as a "note" for the kernel
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; Descriptor Table for address ranges
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map_phys_mem_init:
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mov ebx, 0
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map_phys_mem:
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mov eax, 0xE820 ; Function code
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; Tell the CPU about the descriptors location (ES:DI)
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;mov es, addr_rng_dt_start
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;mov di,
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mov ecx, ADDR_RNG_DT_SIZE
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mov edx, 'SMAP' ; Signature
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int BIOS_PMEM_INT
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ret
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addr_rng_dt_start:
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addr_rng_low: dd 0
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addr_rng_high: dd 0
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addr_rng_len_low: dd 0
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addr_rng_len_high: dd 0
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addr_rng_type: dd 0
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addr_rng_dt_end:
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ADDR_RNG_DT_SIZE equ addr_rng_dt_end - addr_rng_dt_start
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