I was debugging some c++ code (WinCE 6 on ARM platform), and i find some behavior strange:
4277220C mov r3, #0x93, 30
42772210 str r3, [sp]
42772214 ldr r3, [pc, #0x69C]
42772218 ldr r2, [pc, #0x694]
4277221C mov r1, #0
42772220 ldr r0, [pc, #0x688]
Line 42772214 ldr r3, [pc, #0x69C] is used to get some constant from .DATA section, at least I think so.
What is strange that according to the code r2 should be filled with memory from address pc=0x42772214 + 0x69C = 0x427728B0, but according to the memory contents it's loaded from 0x427728B8 (8bytes+), it happens for other ldr usages too.
Is it fault of the debugger or my understanding of ldr/pc? Another issue I don't get - why access to the .data section is relative to the executed code? I find it little bit strange.
And one more issue: i cannot find syntax of the 1st mov command (any one could point me a optype specification for the Thumb (1C2))
Sorry for the laic description, but I'm just familiarizing with the assemblies.