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<table border=0 cellpadding=0 cellspacing=0 width=1707 style='border-collapse:
collapse;table-layout:fixed;width:1281pt'>
<col class=xl69 width=103 style='mso-width-source:userset;mso-width-alt:3296;
width:77pt'>
<col width=306 style='mso-width-source:userset;mso-width-alt:9792;width:230pt'>
<col class=xl67 width=46 style='mso-width-source:userset;mso-width-alt:1472;
width:35pt'>
<col width=263 style='mso-width-source:userset;mso-width-alt:8416;width:197pt'>
<col width=940 style='mso-width-source:userset;mso-width-alt:30080;width:705pt'>
<col width=49 style='mso-width-source:userset;mso-width-alt:1568;width:37pt'>
<tr height=26 style='mso-height-source:userset;height:19.5pt'>
<td colspan=4 height=26 class=xl85 width=718 style='height:19.5pt;width:539pt'>ARM
® and Thumb<span style='mso-spacerun:yes'> </span>®-2
指令系统<span style='mso-spacerun:yes'> </span></td>
<td class=xl84 width=940 style='width:705pt'></td>
<td class=xl84 width=49 style='width:37pt'></td>
</tr>
<tr height=26 style='mso-height-source:userset;height:19.5pt'>
<td colspan=2 height=26 class=xl79 style='height:19.5pt'>要点指南</td>
<td colspan=4 class=xl84 style='mso-ignore:colspan'></td>
</tr>
<tr class=xl70 height=30 style='mso-height-source:userset;height:22.5pt'>
<td colspan=2 height=30 class=xl82 style='height:22.5pt'>操作符
(指令助记符)</td>
<td class=xl86>§</td>
<td class=xl85>指令格式</td>
<td class=xl85>作用<span style='mso-spacerun:yes'> </span></td>
<td class=xl85>提示</td>
</tr>
<tr class=xl65 height=19 style='height:14.25pt'>
<td rowspan=4 height=76 class=xl87 width=103 style='height:57.0pt;width:77pt'>位域</td>
<td class=xl84>位清除</td>
<td class=xl79>T2</td>
<td class=xl84>BFC Rd, #<lsb>, #<width></td>
<td class=xl84>Rd[(width+lsb-1):lsb] =
0,对Rd的其他位无效
'width:位宽,lsb:最低有效位</td>
<td class=xl84></td>
</tr>
<tr class=xl65 height=19 style='height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>位插入</td>
<td class=xl79>T2</td>
<td class=xl84>BFI Rd, Rn, #<lsb>, #<width></td>
<td class=xl84>Rd[(width+lsb-1):lsb] =
Rn[(width-1):0],对Rd的其他位无效</td>
<td class=xl84></td>
</tr>
<tr class=xl65 height=19 style='height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>带符号位抽取</td>
<td class=xl79>T2</td>
<td class=xl84>SBFX Rd, Rn, #<lsb>, #<width></td>
<td class=xl84>Rd[(width-1):0] = Rn[(width+lsb-1):lsb], Rd[3<font
class="font19">1:width] = 复制( Rn[width+lsb-1])</font></td>
<td class=xl84></td>
</tr>
<tr class=xl65 height=19 style='height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>位抽取</td>
<td class=xl79>T2</td>
<td class=xl84>UBFX Rd, Rn, #<lsb>, #<width></td>
<td class=xl84>Rd[(width-1):0] = Rn[(width+lsb-1):lsb], Rd[31:width] =
复制(0)</td>
<td class=xl84></td>
</tr>
<tr class=xl65 height=19 style='height:14.25pt'>
<td rowspan=2 height=38 class=xl87 width=103 style='height:28.5pt;width:77pt'>压包</td>
<td class=xl84>低半字合顶</td>
<td class=xl79>6</td>
<td class=xl84>PKHBT Rd, Rn, Rm{, LSL #<sh>}</td>
<td class=xl84>Rd[15:0] = Rn[15:0], Rd[31:16] = (Rm LSL sh)[31:16]. sh 0-31.</td>
<td class=xl84></td>
</tr>
<tr class=xl65 height=19 style='height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>高半字合底</td>
<td class=xl79>6</td>
<td class=xl84>PKHTB Rd, Rn, Rm{, ASR #<sh>}</td>
<td class=xl84>Rd[31:16] = Rn[31:16], Rd[15:0] = (Rm ASR sh)[15:0]. sh 1-32.</td>
<td class=xl84></td>
</tr>
<tr class=xl65 height=19 style='height:14.25pt'>
<td rowspan=3 height=58 class=xl87 width=103 style='height:43.5pt;width:77pt'>带符号位扩展</td>
<td class=xl84>符号半字到字</td>
<td class=xl79>6</td>
<td class=xl84>SXTH Rd, Rm{, ROR #<sh>}</td>
<td class=xl84>Rd[31:0] = 带符号扩展((Rm ROR (8
* sh))[15:0]). sh 0-3.</td>
<td class=xl84>N</td>
</tr>
<tr class=xl65 height=20 style='mso-height-source:userset;height:15.0pt'>
<td height=20 class=xl84 style='height:15.0pt'>符号双字节到半字</td>
<td class=xl79>6</td>
<td class=xl84>SXTB16 Rd, Rm{, ROR #<sh>}</td>
<td class=xl84>Rd[31:16] = 带符号扩展((Rm ROR
(8 * sh))[23:16]),Rd[15:0] = 带符号扩展((Rm ROR
(8 * sh))[7:0]). sh 0-3.</td>
<td class=xl84></td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>符号字节到字(8——32位)</td>
<td class=xl79></td>
<td class=xl84>SXTB Rd, Rm{, ROR #<sh>}</td>
<td class=xl84>Rd[31:0] = 带符号扩展((Rm ROR (8
* sh))[7:0]). sh 0-3.</td>
<td class=xl84>N</td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td rowspan=3 height=57 class=xl87 width=103 style='height:42.75pt;
width:77pt'>无符号位扩展</td>
<td class=xl84>半字到字</td>
<td class=xl79></td>
<td class=xl84>UXTH Rd, Rm{, ROR #<sh>}</td>
<td class=xl84>Rd[31:0] = 零扩展((Rm ROR (8 * sh))[15:0]).
sh 0-3.</td>
<td class=xl84>N</td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>双字节到半字</td>
<td class=xl79></td>
<td class=xl84>UXTB16 Rd, Rm{, ROR #<sh>}</td>
<td class=xl84>Rd[31:16] = 零扩展((Rm ROR (8 *
sh))[23:16]),Rd[15:0] = 零扩展((Rm ROR (8 * sh))[7:0]). sh
0-3.</td>
<td class=xl84></td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>字节到字</td>
<td class=xl79>6</td>
<td class=xl84>UXTB Rd, Rm{, ROR #<sh>}</td>
<td class=xl84>Rd[31:0] = 零扩展((Rm ROR (8 * sh))[7:0]).
sh 0-3.</td>
<td class=xl84>N</td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td rowspan=4 height=76 class=xl87 width=103 style='height:57.0pt;width:77pt'>带符号位扩展的加法</td>
<td class=xl84>符号半字到字加</td>
<td class=xl79>6</td>
<td class=xl84>SXTAH Rd, Rn, Rm{, ROR #<sh>}</td>
<td class=xl84>Rd[31:0] = Rn[31:0] +
带符号扩展((Rm ROR (8 * sh))[15:0]). sh 0-</td>
<td class=xl84></td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td rowspan=2 height=38 class=xl80 style='height:28.5pt'>符号双字节到半字加</td>
<td rowspan=2 class=xl79>6</td>
<td rowspan=2 class=xl88>SXTAB16 Rd, Rn, Rm{, ROR #<sh>}</td>
<td class=xl84>Rd[31:16] = Rn[31:16] +
带符号扩展((Rm ROR (8 * sh))[23:16]),</td>
<td class=xl84></td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>Rd[15:0] = Rn[15:0] +
带符号扩展((Rm ROR (8 * sh))[7:0]). sh 0-3.</td>
<td class=xl84></td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>符号字节到字加</td>
<td class=xl79>6</td>
<td class=xl84>SXTAB Rd, Rn, Rm{, ROR #<sh>}</td>
<td class=xl84>Rd[31:0] = Rn[31:0] +
带符号扩展((Rm ROR (8 * sh))[7:0]). sh 0-3.</td>
<td class=xl84></td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td rowspan=4 height=76 class=xl87 width=103 style='height:57.0pt;width:77pt'>无符号位扩展的加法</td>
<td class=xl84>半字到字加</td>
<td class=xl79>6</td>
<td class=xl84>UXTAH Rd, Rn, Rm{, ROR #<sh>}</td>
<td class=xl84>Rd[31:0] = Rn[31:0] + 零扩展((Rm ROR (8 *
sh))[15:0]). sh 0-3.</td>
<td class=xl84></td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td rowspan=2 height=38 class=xl80 style='height:28.5pt'>双字节到半字加</td>
<td rowspan=2 class=xl79>6</td>
<td rowspan=2 class=xl88>UXTAB16 Rd, Rn, Rm{, ROR #<sh>}</td>
<td class=xl84>Rd[31:16] = Rn[31:16] + 零扩展((Rm ROR (8 *
sh))[23:16]),</td>
<td class=xl84></td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>Rd[15:0] = Rn[15:0] +
零扩展((Rm ROR (8 * sh))[7:0]). sh 0-3.</td>
<td class=xl84></td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>字节到字加</td>
<td class=xl79>6</td>
<td class=xl84>UXTAB Rd, Rn, Rm{, ROR #<sh>}</td>
<td class=xl84>Rd[31:0] = Rn[31:0] + 零扩展((Rm ROR (8 *
sh))[7:0]). sh 0-3.</td>
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