39 lines
894 B
ArmAsm
39 lines
894 B
ArmAsm
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/* Declare constants for the multiboot header. */
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.set ALIGN, 1<<0 /* align loaded modules on page boundaries */
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.set MEMINFO, 1<<1 /* provide memory map */
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.set MB_FLAGS, ALIGN | MEMINFO /* this is the Multiboot 'flag' field */
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.set MB_MAGIC, 0x1BADB002 /* 'magic number' lets bootloader find the header */
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.set MB_CHECKSUM, -(MB_MAGIC + MB_FLAGS) /* checksum of above, to prove we are multiboot */
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/* Multiboot header */
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.section .multiboot
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.align 4
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.long MB_MAGIC
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.long MB_FLAGS
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.long MB_CHECKSUM
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/* Create stack */
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.section .bss
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.align 16
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stack_bottom:
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.skip 16384 # 16 KiB
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stack_top:
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/* Entrypoint */
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.section .text
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.global _start
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.type _start, @function
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_start:
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/* Setup stack */
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mov $stack_top, %esp
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/* Call into C code */
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call kernel_main
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/* Hang if kernel_main returns */
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cli
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1: hlt
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jmp 1b
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.size _start, . - _start
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