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author | Sehong Na <sehong.na@samsung.com> | 2014-05-31 12:54:07 +0900 |
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committer | Sehong Na <sehong.na@samsung.com> | 2014-05-31 12:54:07 +0900 |
commit | 125ba4f9bd2352465139044bca2ecde421f2c0f2 (patch) | |
tree | 56fb917ad7c5607cbc05b418ca95a3b2242116a4 /test/elfso.asm | |
download | nasm-125ba4f9bd2352465139044bca2ecde421f2c0f2.tar.gz nasm-125ba4f9bd2352465139044bca2ecde421f2c0f2.tar.bz2 nasm-125ba4f9bd2352465139044bca2ecde421f2c0f2.zip |
Initialize Tizen 2.3submit/tizen_2.3/20140531.1014372.3a_release
Diffstat (limited to 'test/elfso.asm')
-rw-r--r-- | test/elfso.asm | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/test/elfso.asm b/test/elfso.asm new file mode 100644 index 0000000..e72497b --- /dev/null +++ b/test/elfso.asm @@ -0,0 +1,100 @@ +;Testname=unoptimized; Arguments=-O0 -felf -oelfso.o; Files=stdout stderr elfso.o +;Testname=optimized; Arguments=-Ox -felf -oelfso.o; Files=stdout stderr elfso.o + +; test source file for assembling to ELF shared library +; build with: +; nasm -f elf elfso.asm +; ld -shared -o elfso.so elfso.o +; test with: +; gcc -o elfso elftest.c ./elfso.so +; ./elfso +; (assuming your gcc is ELF, and you're running bash) + +; This file should test the following: +; [1] Define and export a global text-section symbol +; [2] Define and export a global data-section symbol +; [3] Define and export a global BSS-section symbol +; [4] Define a non-global text-section symbol +; [5] Define a non-global data-section symbol +; [6] Define a non-global BSS-section symbol +; [7] Define a COMMON symbol +; [8] Define a NASM local label +; [9] Reference a NASM local label +; [10] Import an external symbol +; [11] Make a PC-relative call to an external symbol +; [12] Reference a text-section symbol in the text section +; [13] Reference a data-section symbol in the text section +; [14] Reference a BSS-section symbol in the text section +; [15] Reference a text-section symbol in the data section +; [16] Reference a data-section symbol in the data section +; [17] Reference a BSS-section symbol in the data section + + BITS 32 + GLOBAL lrotate:function ; [1] + GLOBAL greet:function ; [1] + GLOBAL asmstr:data asmstr.end-asmstr ; [2] + GLOBAL textptr:data 4 ; [2] + GLOBAL selfptr:data 4 ; [2] + GLOBAL integer:data 4 ; [3] + EXTERN printf ; [10] + COMMON commvar 4:4 ; [7] + EXTERN _GLOBAL_OFFSET_TABLE_ + + SECTION .text + +; prototype: long lrotate(long x, int num); +lrotate: ; [1] + push ebp + mov ebp,esp + mov eax,[ebp+8] + mov ecx,[ebp+12] +.label rol eax,1 ; [4] [8] + loop .label ; [9] [12] + mov esp,ebp + pop ebp + ret + +; prototype: void greet(void); +greet push ebx ; we'll use EBX for GOT, so save it + call .getgot +.getgot: pop ebx + add ebx,_GLOBAL_OFFSET_TABLE_ + $$ - .getgot wrt ..gotpc + mov eax,[ebx+integer wrt ..got] ; [14] + mov eax,[eax] + inc eax + mov [ebx+localint wrt ..gotoff],eax ; [14] + mov eax,[ebx+commvar wrt ..got] + push dword [eax] + mov eax,[ebx+localptr wrt ..gotoff] ; [13] + push dword [eax] + mov eax,[ebx+integer wrt ..got] ; [1] [14] + push dword [eax] + lea eax,[ebx+printfstr wrt ..gotoff] + push eax ; [13] + call printf wrt ..plt ; [11] + add esp,16 + pop ebx + ret + + SECTION .data + +; a string +asmstr db 'hello, world', 0 ; [2] +.end + +; a string for Printf +printfstr db "integer==%d, localint==%d, commvar=%d" + db 10, 0 + +; some pointers +localptr dd localint ; [5] [17] +textptr dd greet wrt ..sym ; [15] +selfptr dd selfptr wrt ..sym ; [16] + + SECTION .bss + +; an integer +integer resd 1 ; [3] + +; a local integer +localint resd 1 ; [6] |