📄 sheet003.htm
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<td rowspan=4 height=76 class=xl87 width=103 style='height:57.0pt;width:77pt'>倒转</td>
<td class=xl84>整字中各位倒转</td>
<td class=xl79>T2</td>
<td class=xl84>RBIT Rd, Rm</td>
<td class=xl84>For (i = 0; i < 32; i++) : Rd[i] = Rm[31<font class="font19">-</font><font
class="font17">i</font><font class="font19">]</font></td>
<td class=xl84>N</td>
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<td height=19 class=xl84 style='height:14.25pt'>字中各字节倒转</td>
<td class=xl79>6</td>
<td class=xl84>REV Rd, Rm</td>
<td class=xl84>Rd[31:24] = Rm[7:0], Rd[23:16] = Rm[15:8], Rd[15:8] =
Rm[23:16], Rd[7:0] = Rm[31:24]</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'>双半字中相应字节倒转</td>
<td class=xl79>6</td>
<td class=xl84>REV16 Rd, Rm</td>
<td class=xl84>Rd[15:8] = Rm[7:0], Rd[7:0] = Rm[15:8], Rd[31:24] = Rm[23:16],
Rd[23:16] = Rm[31:24]</td>
<td class=xl84>N</td>
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<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl80 style='height:14.25pt'>下半字各字节带符号扩展倒转</td>
<td class=xl82>6</td>
<td class=xl80>REVSH Rd, Rm</td>
<td class=xl89>Rd[15:8] = Rm[7:0], Rd[7:0] = Rm[15:8], Rd[31:16] = Rm[7] *
&FFFF</td>
<td class=xl84></td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td rowspan=2 height=38 class=xl87 width=103 style='height:28.5pt;width:77pt'>选择</td>
<td rowspan=2 class=xl80>选择字节</td>
<td rowspan=2 class=xl79>6</td>
<td rowspan=2 class=xl80>SEL Rd, Rn, Rm</td>
<td class=xl84>若GE[0] = 1Rd[7:0] =
Rn[7:0]，否则Rd[7:0] = Rm[7:0]</td>
<td class=xl84></td>
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<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>位域（既下面的三字节）[15:8],
[23:16],
[31:24]以类似的方式分别依据GE[1],
GE[2], GE[3]的值来取值。</td>
<td class=xl84></td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td rowspan=3 height=52 class=xl87 width=103 style='height:39.0pt;width:77pt'>假设</td>
<td rowspan=3 class=xl80>If-Then条件执行</td>
<td rowspan=3 class=xl79>T2</td>
<td rowspan=3 class=xl80>IT{pattern} {cond}</td>
<td rowspan=3 class=xl81 width=940 style='width:705pt'>IT根据条件码可以控制其后最多四条指令的执行,条件码是由最多三个字母构成的字符串。每个字母可以是T(then)或E(else).IT指令后的第一条语句满足条件执行，再之后的各条指令在其相应的条件码位为T时满足条件执行；当该位为E时须违背条件方能执行。如：ITETE
EQ …</td>
<td class=xl84>T,U</td>
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<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'></td>
</tr>
<tr height=14 style='mso-height-source:userset;height:10.5pt'>
<td height=14 class=xl84 style='height:10.5pt'></td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td rowspan=10 height=190 class=xl87 width=103 style='height:142.5pt;
width:77pt'>跳转</td>
<td class=xl84>跳转指令</td>
<td class=xl79></td>
<td class=xl84>B <label></td>
<td class=xl84>PC = 标号.
标号指当前指令±32MB
(T2:±16MB, T: -252到+256B)</td>
<td class=xl84>N,B</td>
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<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>带连接的跳转指令</td>
<td class=xl79></td>
<td class=xl84>BL <label></td>
<td class=xl84>LR
=BL的下一条指令地址, PC =
标号.
标号指当前指令±32MB
(T2:±16MB)</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'>带状态切换的跳转指令</td>
<td class=xl79>4T,5</td>
<td class=xl84>BX Rm</td>
<td class=xl84>PC =
Rm.若Rm[0]=1进入Thumb状态,若Rm[0]=0则进入ARM状态.</td>
<td class=xl84>N</td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td rowspan=2 height=38 class=xl80 style='height:28.5pt'>带连接和状态切换的跳转指令(1)</td>
<td rowspan=2 class=xl79>5T</td>
<td rowspan=2 class=xl80>BLX <label></td>
<td class=xl84>LR =下一条指令地址,
PC = 标号,改变指令系统.</td>
<td class=xl84>C</td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>标号指当前指令±32MB
(T2:±16MB)</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'>带连接和状态切换的跳转指令(2)</td>
<td class=xl79>5</td>
<td class=xl84>BLX Rm</td>
<td class=xl84>LR = 下一条指令地址,
PC =
Rm[31:1].若Rm[0]=1转入Thumb模式,Rm[0]=0则进入ARM模式.</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'>转入Java字节码加速状态</td>
<td class=xl79>5J,6</td>
<td class=xl84>BXJ Rm</td>
<td class=xl84>若Java加速状态可用则转入。<span
style='mso-spacerun:yes'> </span></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'>零/非零分支(判零/非零跳转)</td>
<td class=xl79>T2</td>
<td class=xl84>CB{N}Z Rn,<label></td>
<td class=xl84>若Rn {== or !=} 0，则PC = 标号.
标号指(当前指令 + 4-130).</td>
<td class=xl84>N,T,U</td>
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<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>表格字节分支</td>
<td class=xl79>T2</td>
<td class=xl84>TBB [Rn, Rm]</td>
<td class=xl84>PC = PC + 零扩展( Memory( Rn + Rm, 1)
<< 1).跳转范围 4-512.
Rn可以是PC.</td>
<td class=xl84>T,U</td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>表格半字分支</td>
<td class=xl79>T2</td>
<td class=xl84>TBH [Rn, Rm, LSL #1]</td>
<td class=xl84>PC = PC + 零扩展( Memory( Rn + Rm <<
1, 2) << 1).跳转范围 4-131072.
Rn可以是PC.</td>
<td class=xl84>T,U</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'>移入或从程序状态寄存器移出</td>
<td class=xl84>程序状态寄存器到寄存器(读状态寄存器<font
class="font19">)</font></td>
<td class=xl79></td>
<td class=xl84>MRS Rd, <PSR></td>
<td class=xl84>Rd = PSR
'（Rd可能不能为R15）</td>
<td class=xl84></td>
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<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>寄存器到程序状态寄存器(写状态寄存器)</td>
<td class=xl79></td>
<td class=xl84>MSR <PSR>_<fields>, Rm</td>
<td class=xl84>PSR = Rm
(选定的字节)'说明:Fileds传送的区域.如:c,x,s,f分别指
控制、扩展、状态、标志域屏蔽字节。MSR
CPSR_cxsf,R4</td>
<td class=xl84></td>
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<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>从立即数到程序状态寄存器</td>
<td class=xl79></td>
<td class=xl84>MSR <PSR>_<fields>, #<imm8m></td>
<td class=xl84>PSR = immed_8r
(选定的字节)'见上条说明。MSR
CPSR_c,#0xD3</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'>处理机状态更改</td>
<td class=xl84>改变处理机状态<font
class="font8"><span style='mso-spacerun:yes'> </span></font></td>
<td class=xl79>6</td>
<td class=xl84>CPSID <iflags> {, #<p_mode>}</td>
<td class=xl84>禁止中断向量表<font
class="font8">, </font><font class="font19">转换到相应模式</font></td>
<td class=xl84>U,N</td>
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<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'></td>
<td class=xl79>6</td>
<td class=xl84>CPSIE <iflags> {, #<p_mode>}</td>
<td class=xl84>使能中断向量表<font
class="font8">, </font><font class="font19">转换到相应模式</font></td>
<td class=xl84>U,N</td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl84 style='height:14.25pt'>更改处理机模式</td>
<td class=xl79>6</td>
<td class=xl84>CPS #<p_mode></td>
<td class=xl84></td>
<td class=xl84>U</td>
</tr>
<tr height=19 style='mso-height-source:userset;height:14.25pt'>
<td height=19 class=xl90 width=306 style='height:14.25pt;width:230pt'>设置汇编器模式</td>
<td class=xl79>6</td>
<td class=xl84>SETEND <endianness></td>
<td class=xl84>设置加载和存储的格式<font
class="font23"><endianness></font><font class="font8"> </font><font
class="font19">可能是大端</font><font
class="font8"> (Big Endian) </font><font class="font19">或小端模式</font><font
class="font8"> (Little Endian)</font></td>
<td class=xl84>U,N</td>
</tr>
<tr height=23 style='mso-height-source:userset;height:17.25pt'>
<td height=23 class=xl68 style='height:17.25pt'></td>
<td></td>
<td class=xl67></td>
<td colspan=3 style='mso-ignore:colspan'></td>
</tr>
<tr height=18 style='height:13.5pt'>
<td height=18 class=xl69 width=103 style='height:13.5pt;width:77pt'><span
style='mso-spacerun:yes'> </span></td>
<td></td>
<td class=xl67></td>
<td colspan=3 style='mso-ignore:colspan'></td>
</tr>
<![if supportMisalignedColumns]>
<tr height=0 style='display:none'>
<td width=103 style='width:77pt'></td>
<td width=306 style='width:230pt'></td>
<td width=46 style='width:35pt'></td>
<td width=263 style='width:197pt'></td>
<td width=940 style='width:705pt'></td>
<td width=49 style='width:37pt'></td>
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<![endif]>
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