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src/arch/x86/prefix/rawprefix.S
53 строки
840 B
Michael Brown
[build] Fix building with newer binutils
14 янв 2024, 15:16
14 янв 2024, 15:16
6ca597e
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/* * Raw binary prefix * * Assumes that entire image is already loaded as a contiguous block * on a paragraph boundary and entered in real mode. * */ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ) .section ".note.GNU-stack", "", @progbits .code16 .arch i386 .org 0 #include <librm.h> .section ".prefix", "ax", @progbits .globl _raw_start _raw_start: /* Adjust %cs so that %cs:0000 is the start of the image */ movw %cs, %ax call 1f 1: popw %bx subw $1b, %bx shrw $4, %bx addw %bx, %ax pushw %ax pushw $2f lret 2: /* Install iPXE */ call install /* Set up real-mode stack */ movw %bx, %ss movw $_estack16, %sp /* Jump to .text16 segment */ pushw %ax pushw $1f lret .section ".text16", "awx", @progbits 1: /* Run iPXE */ virtcall main /* Uninstall iPXE */ call uninstall /* Boot next device */ int $0x18