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| <h3 class="section">1.5 The Simple Example at the Assembly Level</h3> |
| |
| <p>This simple “hello world” example demonstrates several of the stab |
| types used to describe C language source files. |
| |
| <pre class="example"> 1 gcc2_compiled.: |
| 2 .stabs "/cygint/s1/users/jcm/play/",100,0,0,Ltext0 |
| 3 .stabs "hello.c",100,0,0,Ltext0 |
| 4 .text |
| 5 Ltext0: |
| 6 .stabs "int:t1=r1;-2147483648;2147483647;",128,0,0,0 |
| 7 .stabs "char:t2=r2;0;127;",128,0,0,0 |
| 8 .stabs "long int:t3=r1;-2147483648;2147483647;",128,0,0,0 |
| 9 .stabs "unsigned int:t4=r1;0;-1;",128,0,0,0 |
| 10 .stabs "long unsigned int:t5=r1;0;-1;",128,0,0,0 |
| 11 .stabs "short int:t6=r1;-32768;32767;",128,0,0,0 |
| 12 .stabs "long long int:t7=r1;0;-1;",128,0,0,0 |
| 13 .stabs "short unsigned int:t8=r1;0;65535;",128,0,0,0 |
| 14 .stabs "long long unsigned int:t9=r1;0;-1;",128,0,0,0 |
| 15 .stabs "signed char:t10=r1;-128;127;",128,0,0,0 |
| 16 .stabs "unsigned char:t11=r1;0;255;",128,0,0,0 |
| 17 .stabs "float:t12=r1;4;0;",128,0,0,0 |
| 18 .stabs "double:t13=r1;8;0;",128,0,0,0 |
| 19 .stabs "long double:t14=r1;8;0;",128,0,0,0 |
| 20 .stabs "void:t15=15",128,0,0,0 |
| 21 .align 4 |
| 22 LC0: |
| 23 .ascii "Hello, world!\12\0" |
| 24 .align 4 |
| 25 .global _main |
| 26 .proc 1 |
| 27 _main: |
| 28 .stabn 68,0,4,LM1 |
| 29 LM1: |
| 30 !#PROLOGUE# 0 |
| 31 save %sp,-136,%sp |
| 32 !#PROLOGUE# 1 |
| 33 call ___main,0 |
| 34 nop |
| 35 .stabn 68,0,5,LM2 |
| 36 LM2: |
| 37 LBB2: |
| 38 sethi %hi(LC0),%o1 |
| 39 or %o1,%lo(LC0),%o0 |
| 40 call _printf,0 |
| 41 nop |
| 42 .stabn 68,0,6,LM3 |
| 43 LM3: |
| 44 LBE2: |
| 45 .stabn 68,0,6,LM4 |
| 46 LM4: |
| 47 L1: |
| 48 ret |
| 49 restore |
| 50 .stabs "main:F1",36,0,0,_main |
| 51 .stabn 192,0,0,LBB2 |
| 52 .stabn 224,0,0,LBE2 |
| </pre> |
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