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POWhy, in my c++ mips disassembler, is something not printed out?
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  1. POWhy, in my c++ mips disassembler, is something not printed out?
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    copied!<p>In this code, a couple of hex numbers, which should be lw and sw, are not printed out.</p> <pre><code>#include &lt;iostream&gt; #include &lt;stdio.h&gt; int main() { //char ch[4096]; unsigned int asdf[]={0x022DA822, 0x12A70003, 0x8D930018, 0x02689820, 0xAD930018, 0x02697824, 0xAD8FFFF4,0x018C6020, 0x02A4A825, 0x158FFFF6, 0x8E59FFF0}; char* ch=(char*)asdf; int br=sizeof(asdf); //printf("%i\n",int(1) &gt;&gt; 5); //while((br=read(0,ch,sizeof(ch)))&gt;0) { int l=br/4; int* ins_array=(int*)ch; for(short i=0x0; i&lt;l;i++) { int ins=ins_array[i]; int opcode=ins &amp; 0xFC000000; opcode = opcode &gt;&gt; 26; //printf("opcode: %i\n",opcode); int addr=0x7A060+i*4; switch(opcode) { case 0x00: //add,sub { int s=(ins &amp; 0x3E00000)&gt;&gt;21; int t=(ins &amp; 0x1F0000)&gt;&gt;16; int d=(ins &amp; 0xF800)&gt;&gt;11; int tail=ins &amp; 0x7FF; switch(tail) { case 0x20: //add printf("%x: add $%i, $%i, $%i\n",addr,d,s,t); break; case 0x22: //sub printf("%x: sub $%i, $%i, $%i\n",addr,d,s,t); break; case 0x24: //and printf("%x: and $%i, $%i, $%i\n",addr,d,s,t); break; case 0x25: //or printf("%x: or $%i, $%i, $%i\n",addr,d,s,t); break; case 0x2A: //slt printf("%x: slt $%i, $%i, $%i\n",addr,d,s,t); break; } break; } case 0x23: //lw case 0x2B: //sw case 0x04: //beq case 0x05: //bne { int s=(ins &amp; 0x3E00000)&gt;&gt;21; int t=(ins &amp; 0x1F0000)&gt;&gt;16; short I=(ins &amp; 0xFFFF); short m=65536-I; short n=(ins &amp; 0xFFFF)&lt;&lt;2; switch(opcode) { case 0x23: if (I&lt;63) { printf("%x: lw $%i, %i($%i)\n",addr,t,I,s); } else { printf("%x: lw $%i, -%i($%i)\n",addr,t,m,s); } break; case 0x2B: if (I&lt;63) { printf("%x: sw $%i, %i($%i)\n",addr,t,I,s); } else { printf("%x: lw $%i, -%i($%i)\n",addr,t,m,s); } break; case 0x04: printf("%x: beq $%i, $%i, address %x\n",addr,s,t,n+addr); break; case 0x05: printf("%x: bne $%i, $%i, address %x\n",addr,s,t,n+addr); break; } break; } } } } </code></pre> <p>My print out looks like this:</p> <pre><code>7a060: sub $21, $17, $13 7a064: beq $21, $7, address 7a070 7a06c: add $19, $19, $8 7a074: and $15, $19, $9 7a07c: add $12, $12, $12 7a080: or $21, $21, $4 7a084: bne $12, $15, address 7a05c </code></pre> <p>What I want is for it to print out like this:</p> <pre><code>7a060: sub $21, $17, $13 7a064: beq $21, $7, address 7a070 7a068: lw $19, 24($12) 7a06c: add $19, $19, $8 7a070: sw $19, 24($12) 7a074: and $15, $19, $9 7a078: sw $15, -12($12) 7a07c: add $12, $12, $12 7a080: or $21, $21, $4 7a084: bne $12, $15, address 7a05c 7a088: lw $25, -16($18) </code></pre> <p>What should I do to fix this problem?</p>
 

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