2022-01-26 20:19:39 +00:00
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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2022-01-26 22:43:18 +00:00
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2022-01-26 20:19:39 +00:00
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.code16
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2022-01-27 18:09:49 +00:00
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.global init
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2022-01-27 17:32:40 +00:00
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.extern program_size
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2022-01-27 17:34:57 +00:00
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2022-01-27 18:09:49 +00:00
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.section .init
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2022-01-27 00:30:53 +00:00
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.align 2
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2022-01-27 17:32:40 +00:00
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size: .word program_size
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2022-01-27 00:21:22 +00:00
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2022-01-27 01:28:33 +00:00
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hello2: .string "Hello from stage 2!\r\n"
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hello3: .string "Hello from sector 3!\r\n"
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2022-01-27 01:51:26 +00:00
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hello4: .string "Hello from sector 4!\r\n"
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2022-01-26 22:43:18 +00:00
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2022-01-27 18:09:49 +00:00
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init:
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2022-01-27 01:46:04 +00:00
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mov $hello2, %si
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2022-01-26 22:43:18 +00:00
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call print_str
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2022-01-26 20:19:39 +00:00
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2022-01-27 01:51:26 +00:00
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mov $teststr3, %si
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2022-01-27 01:06:12 +00:00
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call print_str
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2022-01-27 01:51:26 +00:00
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mov $teststr4, %si
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call print_str
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ljmp $0, $sector3
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2022-01-26 22:43:18 +00:00
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do_ret:
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ret
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2022-01-27 00:26:54 +00:00
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// AL - char
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2022-01-26 22:43:18 +00:00
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print_char:
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mov $0x0E, %ah
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mov $0x0001, %bx
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int $0x10
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2022-01-27 00:36:10 +00:00
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ret
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2022-01-26 22:43:18 +00:00
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2022-01-27 00:26:54 +00:00
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// SI - string pointer
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2022-01-26 22:43:18 +00:00
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print_str:
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lodsb
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test %al, %al
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jz do_ret
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call print_char
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jmp print_str
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2022-01-27 00:21:22 +00:00
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2022-01-27 01:51:26 +00:00
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.fill 512, 1, 0
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2022-01-27 01:06:12 +00:00
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2022-01-27 01:51:26 +00:00
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teststr3: .string "Test string from sector 3\r\n"
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2022-01-27 00:47:11 +00:00
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2022-01-27 01:51:26 +00:00
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sector3:
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2022-01-27 01:46:04 +00:00
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mov $hello3, %si
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2022-01-27 01:28:33 +00:00
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call print_str
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2022-01-27 01:51:26 +00:00
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ljmp $0, $sector4
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.fill 512, 1, 0
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teststr4: .string "Test string from sector 4\r\n"
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sector4:
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mov $hello4, %si
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call print_str
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2022-01-27 01:28:33 +00:00
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hang:
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cli
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hlt
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jmp hang
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