Index
> Tutorials and Examples > ARM Example + Emulation for PL110 |
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uart777 29 Jul 2013, 10:40
For learning ARM assembler: 2 small ARM examples + QEMU emulator for the ARM PrimeCell PL110 Color LCD Controller: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0161e/I904755.html
A fast, easy way to test ARM code+graphics in under 5 seconds without an expensive simulator. No setup required. To test an example, click the corresponding *.BAT. For some reason, QEMU runs the examples most (70%?) of the time, but not always. If QEMU appears with a black screen ("[Stopped]"), close and try again 1-3 times. Download: Click Here 
Have fun!  |
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29 Jul 2013, 10:40 |
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uart777 29 Jul 2013, 11:09
Previews of recent projects: ARM Visual Reference and Future Macro Language:
Click to Enlarge: ARM VR: http://sungod777.zxq.net/arm.jpg Future ML: http://sungod777.zxq.net/fml.jpg Last edited by uart777 on 10 Aug 2013, 09:25; edited 1 time in total |
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29 Jul 2013, 11:09 |
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uart777 29 Jul 2013, 19:26
cod3b453: And thanks for your contributions. QEMU supports various CPUs: Intel, ARM, MIPS, PPC, etc.
Noticed one mistake: At the end of DRAW.INC, forgot align 4 before name: Code: ; create image file/s+structure/s... macro IMAGE [p] { common local w, h forward match name==f, p \{ align 4 name\#.file: file \ 'IMAGE\'\#\`f\#'.IMAGE' load w word from name\#.file+2 load h word from name\#.file+6 align 4 name: .p dw name\#.file+16 .x dw (SCREEN.W/2)-(w/2) .y dw (SCREEN.H/2)-(h/2) .w dw w .h dw h \} } Last edited by uart777 on 06 Aug 2013, 14:57; edited 1 time in total |
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29 Jul 2013, 19:26 |
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uart777 01 Aug 2013, 06:23
Future Macro Language:
Code: . r0=0, r1=3, while r0<r1, r0++, endw . r0=0, r1=3, repeat r1, r0++, endr . loop r0=0 to r1, r2++, endl . (i8) *r0=*r1, (u8) *r0=*r1++ . (i16) *r0++=*r1, (u16) *r0++=*r1++ . (i32) r0=*r1++, (u32) *r0++=r1 Last edited by uart777 on 08 Aug 2013, 23:45; edited 1 time in total |
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01 Aug 2013, 06:23 |
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uart777 08 Aug 2013, 23:45
New dialog design last night: "Create New Project".
String functions... Code: ; Future Macro Language... function strlen(s) . r0=s, r1=r0 . while (i8) *r0++, endw . r0-r1, r0-- endf function strcpy(a, b) . r0=a, r1=b . while (i8) *r1 . (i8) *r0++=*r1++ . endw . r0--, (i8) *r0=0 endf function strcat(a, b) . strlen(a), r0+a, strcpy(r0, b) endf Written in direct ARM assembler (no macros): Code: ; strlen(s) - get string length strlen: stmfd sp!, { lr } mov a2, a1 @@: ldrb a3, [a1], 1 ; a3=*a1++ tst a3, a3 ; until 0 bne @b sub a1, a1, a2 ; return n (a1=a1-a2-1) sub a1, a1, 1 ldmfd sp!, { pc } ; strcpy(a, b) - string copy strcpy: stmfd sp!, { lr } @@: ldrb a3, [a2], 1 ; a3=*a2++ strb a3, [a1], 1 ; *a1++=a3 tst a3, a3 ; until 0 bne @b sub a1, a1, 1 ; return end mov a3, 0 strb a3, [a1] ldmfd sp!, { pc } ; strcat(a, b) - string concencate strcat: stmfd sp!, { lr } mov v1, a1 mov v2, a2 bl strlen add a1, a1, v1 mov a2, v2 bl strcpy ldmfd sp!, { pc } Portable syntaxes generate optimized code for X86 + ARM: Code: ; . (i8) *r0++=*r1++ movsx ebx, byte [ecx] ; X86... inc ecx mov byte [eax], bl inc eax ldrsb r10, [r1], 1 ; ARM... strb r10, [r0], 1 Preview in CodeVu with highlighted syntax+keywords:  |
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08 Aug 2013, 23:45 |
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