nasmlib.h: Introduce nasm_build_assert
[nasm.git] / test / elftest.asm
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1 ; test source file for assembling to ELF
2 ; build with:
3 ; nasm -f elf elftest.asm
4 ; gcc -o elftest elftest.c elftest.o
5 ; (assuming your gcc is ELF)
7 ; This file should test the following:
8 ; [1] Define and export a global text-section symbol
9 ; [2] Define and export a global data-section symbol
10 ; [3] Define and export a global BSS-section symbol
11 ; [4] Define a non-global text-section symbol
12 ; [5] Define a non-global data-section symbol
13 ; [6] Define a non-global BSS-section symbol
14 ; [7] Define a COMMON symbol
15 ; [8] Define a NASM local label
16 ; [9] Reference a NASM local label
17 ; [10] Import an external symbol
18 ; [11] Make a PC-relative call to an external symbol
19 ; [12] Reference a text-section symbol in the text section
20 ; [13] Reference a data-section symbol in the text section
21 ; [14] Reference a BSS-section symbol in the text section
22 ; [15] Reference a text-section symbol in the data section
23 ; [16] Reference a data-section symbol in the data section
24 ; [17] Reference a BSS-section symbol in the data section
25 ; [18] Define a non-global rodata-section symbol
27 BITS 32
28 GLOBAL lrotate ; [1]
29 GLOBAL greet ; [1]
30 GLOBAL asmstr ; [2]
31 GLOBAL textptr ; [2]
32 GLOBAL selfptr ; [2]
33 GLOBAL integer ; [3]
34 EXTERN printf ; [10]
35 COMMON commvar 4 ; [7]
37 SECTION .text
39 ; prototype: long lrotate(long x, int num);
40 lrotate: ; [1]
41 push ebp
42 mov ebp,esp
43 mov eax,[ebp+8]
44 mov ecx,[ebp+12]
45 .label rol eax,1 ; [4] [8]
46 loop .label ; [9] [12]
47 mov esp,ebp
48 pop ebp
49 ret
51 ; prototype: void greet(void);
52 greet mov eax,[integer] ; [14]
53 inc eax
54 mov [localint],eax ; [14]
55 push dword [commvar]
56 mov eax,[localptr] ; [13]
57 push dword [eax]
58 push dword [integer] ; [1] [14]
59 push dword printfstr ; [13]
60 call printf ; [11]
61 add esp,16
62 ret
64 SECTION .data
66 ; a string
67 asmstr db 'hello, world', 0 ; [2]
69 ; a string for Printf
70 printfstr db "integer==%d, localint==%d, commvar=%d"
71 db 10, 0
73 ; some pointers
74 localptr dd localint ; [5] [17]
75 textptr dd greet ; [15]
76 selfptr dd selfptr ; [16]
78 SECTION .bss
80 ; an integer
81 integer resd 1 ; [3]
83 ; a local integer
84 localint resd 1 ; [6]
86 SECTION .rodata
87 readonly dd readonly ; [18]