Don't need a full dissassembler listing when it's going to change anyway #147
Description
https://rust-embedded.github.io/book/start/qemu.html#inspecting
There is no meaning in displaying the entire assembler output as if we want to say "it should look like this". Or the assembler in the book should be kept updated so it can be verified.
on my pc it's
app: file format ELF32-arm-little
Disassembly of section .text:
main:
400: bl #0x256
404: b #-0x4 <main+0x4>
Reset:
406: bl #0x24e
40a: movw r0, #0x0
40e: movw r2, #0x0
412: movt r0, #0x2000
416: movt r2, #0x2000
41a: cmp r2, r0
41c: bhs #0xb4 <Reset+0xce>
41e: adds r1, r2, #0x4
420: mvn.w r12, r2
424: cmp r1, r0
426: mov.w r4, #0x1
42a: mov r3, r1
42c: it lo
42e: movlo r3, r0
430: add r3, r12
432: add.w r3, r4, r3, lsr #2
436: lsls r3, r3, #0x1e
438: mov r3, r2
43a: beq #0x48 <Reset+0x80>
43c: mov.w lr, #0x0
440: mov r3, r2
442: str lr, [r3], #4
446: cmp r3, r0
448: mov r5, r3
44a: it lo
44c: movlo r5, r0
44e: add r5, r12
450: add.w r4, r4, r5, lsr #2
454: and r4, r4, #0x3
458: cmp r4, #0x1
45a: beq #0x28 <Reset+0x80>
45c: mov r3, r2
45e: movs r7, #0x1
460: str lr, [r3, #4]!
464: cmp r3, r0
466: it lo
468: movlo r3, r0
46a: add r3, r12
46c: add.w r3, r7, r3, lsr #2
470: and r3, r3, #0x3
474: cmp r3, #0x2
476: beq #0x8 <Reset+0x7c>
478: movs r3, #0x0
47a: str r3, [r2, #0x8]
47c: add.w r3, r2, #0xc
480: b #0x2 <Reset+0x80>
482: add.w r3, r2, #0x8
486: cmp r1, r0
488: it lo
48a: movlo r1, r0
48c: add r1, r12
48e: lsrs r1, r1, #0x2
490: cmp r1, #0x3
492: blo #0x3e <Reset+0xce>
494: movs r1, #0x0
496: add.w r2, r3, #0x10
49a: str r1, [r3]
49c: cmp r2, r0
49e: str r1, [r3, #0x4]
4a0: str r1, [r3, #0x8]
4a2: str r1, [r3, #0xc]
4a4: itttt lo
4a6: strlo r1, [r2]
4a8: strlo r1, [r2, #0x4]
4aa: strlo r1, [r2, #0x8]
4ac: strlo r1, [r2, #0xc]
4ae: itt lo
4b0: addlo r2, #0x10
4b2: cmplo r2, r0
4b4: bhs #0x1c <Reset+0xce>
4b6: str r1, [r2]
4b8: str r1, [r2, #0x4]
4ba: str r1, [r2, #0x8]
4bc: str r1, [r2, #0xc]
4be: adds r2, #0x10
4c0: cmp r2, r0
4c2: bhs #0xe <Reset+0xce>
4c4: add.w r3, r2, #0x10
4c8: str r1, [r2]
4ca: cmp r3, r0
4cc: str r1, [r2, #0x4]
4ce: str r1, [r2, #0x8]
4d0: str r1, [r2, #0xc]
4d2: blo #-0x40 <Reset+0x90>
4d4: movw r8, #0x0
4d8: movw lr, #0x0
4dc: movt r8, #0x2000
4e0: movt lr, #0x2000
4e4: cmp lr, r8
4e6: bhs.w #0x11c <Reset+0x200>
4ea: add.w r2, lr, #0x4
4ee: mvn.w r12, lr
4f2: cmp r2, r8
4f4: mov.w r5, #0x1
4f8: mov r1, r2
4fa: movw r4, #0x664
4fe: it lo
500: movlo r1, r8
502: movt r4, #0x0
506: add r1, r12
508: add.w r1, r5, r1, lsr #2
50c: lsls r1, r1, #0x1e
50e: beq #0x50 <Reset+0x15c>
510: mov r1, r4
512: mov r3, lr
514: ldr r6, [r1], #4
518: str r6, [r3], #4
51c: cmp r3, r8
51e: mov r6, r3
520: it lo
522: movlo r6, r8
524: add r6, r12
526: add.w r5, r5, r6, lsr #2
52a: and r5, r5, #0x3
52e: cmp r5, #0x1
530: beq #0x32 <Reset+0x160>
532: ldr r0, [r4, #0x4]
534: mov r1, lr
536: str r0, [r1, #4]!
53a: cmp r1, r8
53c: it lo
53e: movlo r1, r8
540: add.w r0, r1, r12
544: movs r1, #0x1
546: add.w r0, r1, r0, lsr #2
54a: and r0, r0, #0x3
54e: cmp r0, #0x2
550: beq #0xf8 <Reset+0x246>
552: ldr r0, [r4, #0x8]
554: add.w r1, r4, #0xc
558: str.w r0, [lr, #0x8]
55c: add.w r3, lr, #0xc
560: b #0x2 <Reset+0x160>
562: mov r3, lr
564: mov r1, r4
566: cmp r2, r8
568: it lo
56a: movlo r2, r8
56c: add r2, r12
56e: lsrs r2, r2, #0x2
570: cmp r2, #0x3
572: blo #0x90 <Reset+0x200>
574: add.w r2, r3, #0x10
578: mov r6, r8
57a: cmp r2, r8
57c: it hi
57e: movhi r6, r2
580: mvns r5, r3
582: add.w r12, r6, r5
586: movs r6, #0x1
588: add.w r6, r6, r12, lsr #4
58c: ands lr, r6, #0x3
590: beq #0x1e <Reset+0x1ac>
592: ldrd r6, r5, [r1]
596: cmp.w lr, #0x1
59a: ldrd r4, r7, [r1, #8]
59e: strd r6, r5, [r3]
5a2: strd r4, r7, [r3, #8]
5a6: bne #0x62 <Reset+0x206>
5a8: adds r1, #0x10
5aa: cmp.w r12, #0x30
5ae: bhs #0x8 <Reset+0x1b4>
5b0: b #0x52 <Reset+0x200>
5b2: mov r2, r3
5b4: cmp.w r12, #0x30
5b8: blo #0x4a <Reset+0x200>
5ba: ldrd r3, r7, [r1]
5be: ldrd r6, r5, [r1, #8]
5c2: ldrd r4, r0, [r1, #16]
5c6: ldrd r12, lr, [r1, #24]
5ca: strd r3, r7, [r2]
5ce: add.w r7, r1, #0x20
5d2: strd r6, r5, [r2, #8]
5d6: strd r4, r0, [r2, #16]
5da: strd r12, lr, [r2, #24]
5de: add.w lr, r1, #0x34
5e2: ldm r7, {r0, r3, r7}
5e4: ldrd r6, r5, [r1, #44]
5e8: adds r1, #0x40
5ea: ldm.w lr, {r4, r12, lr}
5ee: str r0, [r2, #0x20]
5f0: add.w r0, r2, #0x34
5f4: str r3, [r2, #0x24]
5f6: str r7, [r2, #0x28]
5f8: strd r6, r5, [r2, #44]
5fc: adds r2, #0x40
5fe: cmp r2, r8
600: stm.w r0, {r4, r12, lr}
604: blo #-0x4e <Reset+0x1b4>
606: bl #-0x20a
60a: trap
60c: add.w r5, r1, #0x10
610: cmp.w lr, #0x2
614: ldm r5, {r0, r2, r4, r5}
616: str r0, [r3, #0x10]
618: str r2, [r3, #0x14]
61a: str r4, [r3, #0x18]
61c: str r5, [r3, #0x1c]
61e: bne #0xc <Reset+0x228>
620: adds r1, #0x20
622: add.w r2, r3, #0x20
626: cmp.w r12, #0x30
62a: bhs #-0x74 <Reset+0x1b4>
62c: b #-0x2a <Reset+0x200>
62e: add.w r7, r1, #0x20
632: ldm r7, {r0, r2, r7}
634: ldr r6, [r1, #0x2c]
636: adds r1, #0x30
638: str r0, [r3, #0x20]
63a: str r2, [r3, #0x24]
63c: add.w r2, r3, #0x30
640: str r7, [r3, #0x28]
642: str r6, [r3, #0x2c]
644: cmp.w r12, #0x30
648: bhs #-0x92 <Reset+0x1b4>
64a: b #-0x48 <Reset+0x200>
64c: add.w r1, r4, #0x8
650: add.w r3, lr, #0x8
654: b #-0xf2 <Reset+0x160>
DefaultHandler_:
656: b #-0x4 <DefaultHandler_>
UsageFault:
657: strb r7, [r4, #0x3]
DefaultPreInit:
658: bx lr
__pre_init:
659: strb r7, [r0, #0x1]
__nop:
65a: bx lr
HardFaultTrampoline:
65c: mrs r0, msp
660: b #-0x2 <HardFault_>
HardFault_:
662: b #-0x4 <HardFault_>
HardFault:
663: <unknown>
Suggestion 1:
Don't show output at all, just say will output dissassembler
Suggestion 2:
Show 3 lines with ... on the 4th line.