mirror of
https://github.com/XAMPPRocky/tokei.git
synced 2026-10-13 22:49:28 +02:00
Ben Widawsky
c8da8869ae
.asm is generally associated with MASM,NASM,YASM, while .s and .S are associated with traditionally what is fed into the GNU assembler. To support this, create two different assembly file types.
68 lines
1.2 KiB
ArmAsm
68 lines
1.2 KiB
ArmAsm
// 67 lines 46 code 10 comments 11 blanks
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#include "config.h"
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/* BIG FAT WARNING GOES HERE */
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#define dbg(char) \
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mov \char, %ax ;\
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out %ax, $0xe9 ;\
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#endif
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.align 16
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.code16
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.section .resettext, "xa", @progbits
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reset_vector:
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cli
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jmp switch_modes
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.section .text
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switch_modes:
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/*
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* The developer manual builds up the GDT, but since it should get
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* cached by the CPU, we can just have it in the flash.
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*/
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mov %cs, %ax
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mov %ax, %ds
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/* Enable protected mode (PE) */
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mov %cr0, %eax
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or $1, %al
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mov %eax, %cr0
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ljmpl $0x8,$protected_mode
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.code32
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protected_mode:
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mov $0x10, %ax
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mov %ax, %ds
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mov %ax, %es
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mov %ax, %fs
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mov %ax, %gs
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mov %ax, %ss
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gdt_desc:
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.word egdt - gdt - 1
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.long gdt
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.align 8
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gdt:
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// 0 segment
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.long 0, 0
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// code (0x8)
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.word 0xffff // limit 15:0
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.word 0x0 // base 15:0
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.byte 0x0 // base 23:16
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.byte 0x9b // present, ring 0, executable, !conforming, readable, accessed
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.byte 0xcf // granularity size, limit[19:16] = f
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.byte 0x0 // base 31:24
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// data (0x10)
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.word 0xffff // limit 15:0
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.word 0x0 // base 15:0
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.byte 0x0 // base 23:16
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.byte 0x93 // present, priv=0, !executable, stack down, writable, accessed
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.byte 0xcf // granularity=1 size=1, limit 19:16 = f
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.byte 0x0 // base 31:24
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egdt:
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