rulimine/decompressor/main.c

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#include <stdint.h>
#include <stddef.h>
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#include <stdnoreturn.h>
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#include <tinf.h>
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noreturn void entry(uint8_t *compressed_stage2, size_t stage2_size, uint8_t boot_drive, int pxe) {
// The decompressor should decompress compressed_stage2 to address 0x8000.
uint8_t *dest = (uint8_t *)0x8000;
tinf_gzip_uncompress(dest, compressed_stage2, stage2_size);
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asm volatile (
"movl $0x7c00, %%esp\n\t"
"xorl %%ebp, %%ebp\n\t"
"pushl %1\n\t"
"pushl %0\n\t"
"pushl $0\n\t"
"pushl $0x8000\n\t"
"ret\n\t"
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:
: "r" ((uint32_t)boot_drive), "r" (pxe)
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: "memory"
);
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__builtin_unreachable();
}