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[Bug gdb/17384] android arm gdb "Cannot access memory at address" when I "stepi" over "blx"
- From: "palves at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: gdb-prs at sourceware dot org
- Date: Fri, 19 Sep 2014 15:25:39 +0000
- Subject: [Bug gdb/17384] android arm gdb "Cannot access memory at address" when I "stepi" over "blx"
- Auto-submitted: auto-generated
- References: <bug-17384-4717 at http dot sourceware dot org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=17384
--- Comment #20 from Pedro Alves <palves at redhat dot com> ---
> (gdb) disassemble /r 0x4e0dcc20,+10
> Dump of assembler code from 0x4e0dcc20 to 0x4e0dcc2a:
> 0x4e0dcc20: 04 c0 9f e5 ldr r12, [pc, #4] ; 0x4e0dcc2c
> 0x4e0dcc24: 0c c0 8f e0 add r12, pc, r12
> 0x4e0dcc28: 1c ff 2f e1 bx r12
> End of assembler dump.
I wonder whether that's some sort of trampoline the compiler/linker is
generating
and gdb is not grokking.
See arm_stub_unwind_sniffer and arm_skip_bx_reg.
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