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expand protected mode code segment

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pantonshire committed 2025-11-03 09:31:02 +00:00
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commit a90c727a9a
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docs/mem_layout.md
+1 -1
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@@ -25,7 +25,7 @@
- 0x07e00 - 0x08000: gpt partition header - 0x07e00 - 0x08000: gpt partition header
- 0x08000 - 0x08200: stage 2 partition table entry - 0x08000 - 0x08200: stage 2 partition table entry
- 0x08200 - 0x0c000: stage 2 text, stage 3 stack - 0x08200 - 0x0c000: stage 2 text, stage 3 stack
- 0x0c000 : gdt - 0x0e000 : gdt
- 0x10000 : stage 3 text - 0x10000 : stage 3 text
0x10000: stage 3 0x10000: stage 3
stage_2/main.s
+2 -2
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@@ -134,13 +134,13 @@ gdt_flat:
dq 0 dq 0
; 32-bit code segment. ; 32-bit code segment.
; Bytes 0x0000 - 0xffff. ; Pages 0x0000 - 0xffff.
.segment_code_32: .segment_code_32:
db 0xff, 0xff, \ db 0xff, 0xff, \
0x00, 0x00, \ 0x00, 0x00, \
0x00, \ 0x00, \
10011011b, \ 10011011b, \
01000000b, \ 11000000b, \
0x00 0x00
; 16-bit code segment, to use if we want to switch back to real mode. ; 16-bit code segment, to use if we want to switch back to real mode.