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edd9297eba
Your Actually Portable Executables now contains a simple virtual memory that works similarly to the Linux Kernel in the sense that it maps your physical memory to negative addresses. This is needed to support mmap() and malloc(). This functionality has zero code size impact. For example the MODE=tiny LIFE.COM executable is still only 12KB in size. The APE bootloader code has also been simplified to improve readibility and further elevate the elegance by which we're able to support so many platforms thereby enhancing verifiability so that we may engender trust in this bootloading process.
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; /* 0x050a */
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struct SmapEntry e820[256]; /* 0x0510 */
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char pc_drive_base_table[11]; /* 0x1510 */
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unsigned char pc_drive_type; /* 0x151b */
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unsigned char pc_drive_last_sector; /* 0x151c */
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unsigned short pc_drive_last_cylinder; /* 0x151d */
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unsigned char pc_drives_attached; /* 0x151f */
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unsigned char pc_drive_last_head; /* 0x1520 */
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unsigned char pc_drive; /* 0x1521 */
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char bad_idt[6]; /* 0x1522 */
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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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