DavidSpickett wrote:
dwarfdump:
[arm_dwarfdump.txt](https://github.com/user-attachments/files/17598949/arm_dwarfdump.txt)
(this doesn't seem different to what AArch64 produces)
objdump:
[arm_objdump.txt](https://github.com/user-attachments/files/17598953/arm_objdump.txt)
stepping log:
[arm_step_log.txt](https://github.com/user-attachments/files/17598983/arm_step_log.txt)
In the log file I break on main then step (`n`) once. It might be relevant that
we don't use hardware single step on Arm 32 bit (it exists we just don't use
it). So perhaps the combination of software single step and this inlined
function is a problem.
I noticed that although you can step into (`s`) and out of (`fin`) the inlined
function, if I did instruction steps (`ni`), lldb would not recognise that it
was inside the inlined function:
```
(lldb) ni
Process 1792462 stopped
* thread #1, name = 'a.out', stop reason = instruction step over
frame #0: 0x00400558 a.out`main(argc=1, argv=0xfffef3d4) at calling.cpp:11:5
8
9 int main (int argc, char **argv) {
10 inline_value = 0; // Stop here and step over to set up stepping
over.
-> 11 inline_trivial_1 (); // At inline_trivial_1 called from main.
12 return 0;
13 }
(lldb) dis
a.out`main:
0x40052c <+0>: push {r11, lr}
0x400530 <+4>: mov r11, sp
0x400534 <+8>: sub sp, sp, #12
0x400538 <+12>: movw r2, #0x0
0x40053c <+16>: str r2, [r11, #-0x4]
0x400540 <+20>: str r0, [sp, #0x4]
0x400544 <+24>: str r1, [sp]
0x400548 <+28>: movw r0, #0x0
0x40054c <+32>: ldr r1, [pc, #0x14] ; <+60> at calling.cpp
0x400550 <+36>: add r1, pc, r1
0x400554 <+40>: str r0, [r1]
-> 0x400558 <+44>: nop
0x40055c <+48>: movw r0, #0x0
0x400560 <+52>: mov sp, r11
0x400564 <+56>: pop {r11, pc}
0x400568 <+60>: andeq r0, r1, r4, ror #21
(lldb) bt
* thread #1, name = 'a.out', stop reason = instruction step over
* frame #0: 0x00400558 a.out`main(argc=1, argv=0xfffef3d4) at calling.cpp:11:5
frame #1: 0xf7c8d7d6 libc.so.6`__libc_start_call_main(main=(a.out`main at
calling.cpp:9), argc=1, argv=0xfffef3d4) at libc_start_call_main.h:58:16
frame #2: 0xf7c8d886 libc.so.6`__libc_start_main_impl(main=(a.out`main at
calling.cpp:9), argc=0, argv=0xf7d8e000, init=<unavailable>, fini=0x00000000,
rtld_fini=(ld-linux-armhf.so.3`_dl_fini + 1 at dl-fini.c:51:20),
stack_end=0xfffef3d4) at libc-start.c:392:3
frame #3: 0x00400458 a.out`_start + 40
```
If I add a second nop, it will realise it's in the inlined function when it
gets to the second nop.
https://github.com/llvm/llvm-project/pull/114295
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