2017-11-01 09:23:42 -04:00
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.set MULTIBOOT_MAGIC, 0xE85250D6
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.set MULTIBOOT_ARCH, 0
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.set MULTIBOOT_LENGTH, 16 + 8
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.set MULTIBOOT_CHECKSUM, -(MULTIBOOT_MAGIC + MULTIBOOT_ARCH + MULTIBOOT_LENGTH)
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2017-11-01 00:43:42 -04:00
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2017-11-01 09:23:42 -04:00
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.section .multiboot
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2017-11-01 04:53:27 -04:00
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.align 4
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2017-11-01 09:23:42 -04:00
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.long MULTIBOOT_MAGIC
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.long MULTIBOOT_ARCH
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.long MULTIBOOT_LENGTH
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.long MULTIBOOT_CHECKSUM
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2017-11-01 05:45:56 -04:00
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.long 0
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.long 8
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2017-11-01 04:53:27 -04:00
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2017-11-01 00:43:42 -04:00
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.section .bss
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.align 16
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.skip 16384 # 16 KiB
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2017-11-05 10:26:30 -05:00
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_kernel_stack_top:
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.global _kernel_stack_top
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2017-11-01 00:43:42 -04:00
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.section .text
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.global _start
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2017-11-03 22:35:17 -04:00
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2017-11-01 00:43:42 -04:00
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.type _start, @function
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2017-11-03 22:35:17 -04:00
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.type halt, @function
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2017-11-01 00:43:42 -04:00
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_start:
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2017-11-05 10:26:30 -05:00
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mov $_kernel_stack_top, %esp // Initialize stack
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2017-11-03 22:25:57 -04:00
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push %ebx // Multiboot information pointer
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push %eax // Multiboot magic number
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2017-11-08 07:22:46 -05:00
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call main
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2017-11-03 22:32:23 -04:00
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2017-11-07 23:49:30 -05:00
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call halt
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2017-11-01 00:43:42 -04:00
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.size _start, . - _start
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