before ch2 broken disk
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ridethepig
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80fb301301
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23
Makefile
23
Makefile
@ -1,23 +0,0 @@
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CC = gcc
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ASM = nasm
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QEMU = qemu
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IMG = boot.bin
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boot.bin: boot.asm
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$(ASM) $< -o $@
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compile: boot.bin
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.DEFAULT_GOAL=compile
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run: compile
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$(QEMU) -boot order=c -drive file=$(IMG),format=raw
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clean:
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rm boot.bin
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debug: compile
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$(QEMU) -boot order=c -drive file=$(IMG),format=raw -S -s &
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gdb -ex 'set tdesc filename target.xml' -ex 'target remote localhost:1234'
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.PHONY: compile clean run debug
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31
boot.asm
31
boot.asm
@ -1,31 +0,0 @@
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org 0x7c00 ; 告诉编译器程序加载到7c00处
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mov ax, cs
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mov ds, ax
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mov es, ax
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call DispStr ; 调用显示字符串例程
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jmp $ ; 无限循环
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DispStr:
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mov ax, 0600h
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mov bx, 0h
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mov cx, 0h
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mov dh, 25-1
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mov dl, 80-1 ; vga text-mode: 80x25
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int 10h ; clear screen
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mov ax, 0200h
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mov bx, 0h
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mov dx, 1326h ; 19=13H, 38=26H
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int 10h ; set cursor position
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mov ax, NWPU
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mov bp, ax ; ES:BP = 串地址, es has been set to the same seg
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mov cx, 4 ; CX = 串长度
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mov ax, 01300h ; AH = 13, AL = 01h
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mov bx, 00f9h ; 页号为0(BH = 0) 黑底红字(BL = 0Ch,高亮)
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int 10h ; 10h 号中断
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mov ax, 0200h
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mov bx, 0h
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mov dx, 0h
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int 10H ; reset cursor to 0,0
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ret
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NWPU: db "NWPU"
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times 510-($-$$) db 0 ; 填充剩下的空间，使生成的二进制代码恰好为512字节
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dw 0xaa55 ; 结束标志
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192
i386-32bit.xml
192
i386-32bit.xml
@ -1,192 +0,0 @@
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<?xml version="1.0"?>
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<!-- Copyright (C) 2010-2017 Free Software Foundation, Inc.
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Copying and distribution of this file, with or without modification,
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are permitted in any medium without royalty provided the copyright
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notice and this notice are preserved. -->
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<!-- I386 with SSE -->
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<!DOCTYPE target SYSTEM "gdb-target.dtd">
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<feature name="org.gnu.gdb.i386.core">
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<flags id="i386_eflags" size="4">
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<field name="" start="22" end="31"/>
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<field name="ID" start="21" end="21"/>
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<field name="VIP" start="20" end="20"/>
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<field name="VIF" start="19" end="19"/>
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<field name="AC" start="18" end="18"/>
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<field name="VM" start="17" end="17"/>
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<field name="RF" start="16" end="16"/>
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<field name="" start="15" end="15"/>
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<field name="NT" start="14" end="14"/>
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<field name="IOPL" start="12" end="13"/>
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<field name="OF" start="11" end="11"/>
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<field name="DF" start="10" end="10"/>
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<field name="IF" start="9" end="9"/>
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<field name="TF" start="8" end="8"/>
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<field name="SF" start="7" end="7"/>
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<field name="ZF" start="6" end="6"/>
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<field name="" start="5" end="5"/>
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<field name="AF" start="4" end="4"/>
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<field name="" start="3" end="3"/>
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<field name="PF" start="2" end="2"/>
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<field name="" start="1" end="1"/>
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<field name="CF" start="0" end="0"/>
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</flags>
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<reg name="eax" bitsize="32" type="int32" regnum="0"/>
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<reg name="ecx" bitsize="32" type="int32"/>
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<reg name="edx" bitsize="32" type="int32"/>
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<reg name="ebx" bitsize="32" type="int32"/>
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<reg name="esp" bitsize="32" type="data_ptr"/>
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<reg name="ebp" bitsize="32" type="data_ptr"/>
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<reg name="esi" bitsize="32" type="int32"/>
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<reg name="edi" bitsize="32" type="int32"/>
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<reg name="eip" bitsize="32" type="code_ptr"/>
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<reg name="eflags" bitsize="32" type="i386_eflags"/>
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<reg name="cs" bitsize="32" type="int32"/>
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<reg name="ss" bitsize="32" type="int32"/>
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<reg name="ds" bitsize="32" type="int32"/>
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<reg name="es" bitsize="32" type="int32"/>
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<reg name="fs" bitsize="32" type="int32"/>
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<reg name="gs" bitsize="32" type="int32"/>
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<!-- Segment descriptor caches and TLS base MSRs -->
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<!--reg name="cs_base" bitsize="32" type="int32"/>
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<reg name="ss_base" bitsize="32" type="int32"/>
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<reg name="ds_base" bitsize="32" type="int32"/>
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<reg name="es_base" bitsize="32" type="int32"/-->
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<reg name="fs_base" bitsize="32" type="int32"/>
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<reg name="gs_base" bitsize="32" type="int32"/>
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<reg name="k_gs_base" bitsize="32" type="int32"/>
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<flags id="i386_cr0" size="4">
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<field name="PG" start="31" end="31"/>
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<field name="CD" start="30" end="30"/>
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<field name="NW" start="29" end="29"/>
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<field name="AM" start="18" end="18"/>
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<field name="WP" start="16" end="16"/>
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<field name="NE" start="5" end="5"/>
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<field name="ET" start="4" end="4"/>
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<field name="TS" start="3" end="3"/>
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<field name="EM" start="2" end="2"/>
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<field name="MP" start="1" end="1"/>
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<field name="PE" start="0" end="0"/>
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</flags>
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<flags id="i386_cr3" size="4">
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<field name="PDBR" start="12" end="31"/>
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<!--field name="" start="3" end="11"/>
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<field name="WT" start="2" end="2"/>
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<field name="CD" start="1" end="1"/>
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<field name="" start="0" end="0"/-->
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<field name="PCID" start="0" end="11"/>
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</flags>
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<flags id="i386_cr4" size="4">
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<field name="VME" start="0" end="0"/>
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<field name="PVI" start="1" end="1"/>
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<field name="TSD" start="2" end="2"/>
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<field name="DE" start="3" end="3"/>
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<field name="PSE" start="4" end="4"/>
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<field name="PAE" start="5" end="5"/>
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<field name="MCE" start="6" end="6"/>
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<field name="PGE" start="7" end="7"/>
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<field name="PCE" start="8" end="8"/>
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<field name="OSFXSR" start="9" end="9"/>
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<field name="OSXMMEXCPT" start="10" end="10"/>
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<field name="UMIP" start="11" end="11"/>
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<field name="LA57" start="12" end="12"/>
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<field name="VMXE" start="13" end="13"/>
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<field name="SMXE" start="14" end="14"/>
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<field name="FSGSBASE" start="16" end="16"/>
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<field name="PCIDE" start="17" end="17"/>
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<field name="OSXSAVE" start="18" end="18"/>
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<field name="SMEP" start="20" end="20"/>
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<field name="SMAP" start="21" end="21"/>
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<field name="PKE" start="22" end="22"/>
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</flags>
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<flags id="i386_efer" size="8">
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<field name="TCE" start="15" end="15"/>
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<field name="FFXSR" start="14" end="14"/>
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<field name="LMSLE" start="13" end="13"/>
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<field name="SVME" start="12" end="12"/>
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<field name="NXE" start="11" end="11"/>
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<field name="LMA" start="10" end="10"/>
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<field name="LME" start="8" end="8"/>
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<field name="SCE" start="0" end="0"/>
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</flags>
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<reg name="cr0" bitsize="32" type="i386_cr0"/>
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<reg name="cr2" bitsize="32" type="int32"/>
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<reg name="cr3" bitsize="32" type="i386_cr3"/>
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<reg name="cr4" bitsize="32" type="i386_cr4"/>
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<reg name="cr8" bitsize="32" type="int32"/>
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<reg name="efer" bitsize="32" type="i386_efer"/>
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<reg name="st0" bitsize="80" type="i387_ext"/>
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<reg name="st1" bitsize="80" type="i387_ext"/>
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<reg name="st2" bitsize="80" type="i387_ext"/>
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<reg name="st3" bitsize="80" type="i387_ext"/>
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<reg name="st4" bitsize="80" type="i387_ext"/>
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<reg name="st5" bitsize="80" type="i387_ext"/>
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<reg name="st6" bitsize="80" type="i387_ext"/>
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<reg name="st7" bitsize="80" type="i387_ext"/>
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<reg name="fctrl" bitsize="32" type="int" group="float"/>
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<reg name="fstat" bitsize="32" type="int" group="float"/>
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<reg name="ftag" bitsize="32" type="int" group="float"/>
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<reg name="fiseg" bitsize="32" type="int" group="float"/>
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<reg name="fioff" bitsize="32" type="int" group="float"/>
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<reg name="foseg" bitsize="32" type="int" group="float"/>
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<reg name="fooff" bitsize="32" type="int" group="float"/>
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<reg name="fop" bitsize="32" type="int" group="float"/>
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<!--/feature>
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<feature name="org.gnu.gdb.i386.32bit.sse"-->
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<vector id="v4f" type="ieee_single" count="4"/>
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<vector id="v2d" type="ieee_double" count="2"/>
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<vector id="v16i8" type="int8" count="16"/>
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<vector id="v8i16" type="int16" count="8"/>
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<vector id="v4i32" type="int32" count="4"/>
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<vector id="v2i64" type="int64" count="2"/>
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<union id="vec128">
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<field name="v4_float" type="v4f"/>
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<field name="v2_double" type="v2d"/>
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<field name="v16_int8" type="v16i8"/>
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<field name="v8_int16" type="v8i16"/>
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<field name="v4_int32" type="v4i32"/>
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<field name="v2_int64" type="v2i64"/>
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<field name="uint128" type="uint128"/>
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</union>
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<flags id="i386_mxcsr" size="4">
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<field name="IE" start="0" end="0"/>
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<field name="DE" start="1" end="1"/>
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<field name="ZE" start="2" end="2"/>
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<field name="OE" start="3" end="3"/>
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<field name="UE" start="4" end="4"/>
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<field name="PE" start="5" end="5"/>
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<field name="DAZ" start="6" end="6"/>
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<field name="IM" start="7" end="7"/>
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<field name="DM" start="8" end="8"/>
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<field name="ZM" start="9" end="9"/>
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<field name="OM" start="10" end="10"/>
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<field name="UM" start="11" end="11"/>
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<field name="PM" start="12" end="12"/>
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<field name="FZ" start="15" end="15"/>
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</flags>
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<reg name="xmm0" bitsize="128" type="vec128"/>
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<reg name="xmm1" bitsize="128" type="vec128"/>
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<reg name="xmm2" bitsize="128" type="vec128"/>
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<reg name="xmm3" bitsize="128" type="vec128"/>
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<reg name="xmm4" bitsize="128" type="vec128"/>
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<reg name="xmm5" bitsize="128" type="vec128"/>
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<reg name="xmm6" bitsize="128" type="vec128"/>
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<reg name="xmm7" bitsize="128" type="vec128"/>
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<reg name="mxcsr" bitsize="32" type="i386_mxcsr" group="vector"/>
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</feature>
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@ -1 +0,0 @@
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<?xml version="1.0"?><!DOCTYPE target SYSTEM "gdb-target.dtd"><target><architecture>i8086</architecture><xi:include href="i386-32bit.xml"/></target>
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