mirror of
https://github.com/jart/cosmopolitan.git
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116bda997e
You can now run bare metal on bare metal!
* Fix handling of int 0x15 eax = 0xe820 memory map
* Fix some issues in initial page table creation
* hello4.com now works outside emulators
* Ensure area for identity page tables are zeroed first
* Simplify logic for creating page table entries, this partly
reverts 577c0f6226
* Add degenerate MBR partition entry, to ease testing
Co-authored-by: tkchia <tkchia-cosmo@gmx.com>
24 lines
965 B
C
24 lines
965 B
C
#ifndef COSMOPOLITAN_LIBC_RUNTIME_MMAN_H_
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#define COSMOPOLITAN_LIBC_RUNTIME_MMAN_H_
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#include "libc/runtime/e820.internal.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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struct mman {
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int64_t pdp; /* 0x0500 */
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int32_t pdpi; /* 0x0508 */
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int32_t e820n; /* 0x050c */
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struct SmapEntry e820[256]; /* 0x0510 */
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char pc_drive_base_table[11]; /* 0x1d10 */
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unsigned char pc_drive_type; /* 0x1d1b */
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unsigned char pc_drive_last_sector; /* 0x1d1c */
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unsigned short pc_drive_last_cylinder; /* 0x1d1d */
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unsigned char pc_drives_attached; /* 0x1d1f */
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unsigned char pc_drive_last_head; /* 0x1d20 */
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unsigned char pc_drive; /* 0x1d21 */
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char bad_idt[6]; /* 0x1d22 */
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};
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_RUNTIME_MMAN_H_ */
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