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cr0 "32bit bit" -> "protected mode" bit

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This comment seems misleading to me, bit 0 of the `cr0` register enables protected mode, and that is its official name, is there a reason why it says "32 bit"?
Sources:
- [Intel manual](https://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-vol-3a-part-1-manual.pdf) page 78
- https://wiki.osdev.org/CPU_Registers_x86#CR0
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Thomas Navennec 2020-01-22 14:25:16 +01:00 committed by GitHub
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10-32bit-enter/32bit-switch.asm
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@ -3,7 +3,7 @@ switch_to_pm:
cli ; 1. disable interrupts cli ; 1. disable interrupts
lgdt [gdt_descriptor] ; 2. load the GDT descriptor lgdt [gdt_descriptor] ; 2. load the GDT descriptor
mov eax, cr0 mov eax, cr0
or eax, 0x1 ; 3. set 32-bit mode bit in cr0 or eax, 0x1 ; 3. set protected mode bit in cr0
mov cr0, eax mov cr0, eax
jmp CODE_SEG:init_pm ; 4. far jump by using a different segment jmp CODE_SEG:init_pm ; 4. far jump by using a different segment