$ xref arm

Jump-table indices whose arm holds each address (closest preceding arm of every table, best first).

Resolves relative jump tables into variant arm ranges, string literals per arm, reverse instruction-to-arm ownership, and constant error returns.

Usage

xref arm <ADDRS>...

Arguments and options

Arguments

Examples

All examples were recorded on public binaries; see Provenance.

Arm 0xcf3db

Reverse lookup: which jump-table dispatch and variant index owns instruction 0xcf3db.

$ xref -b xref.stripped arm 0xcf3db

0xcf3db  in 0xc7fc0  variant 2 (0x2)  table 0xc06c (dispatch 0xcdc32)  arm 0xce1f1 +0x11ea
0xcf3db  in 0xc7fc0  variant 7 (0x7)  table 0xc058 (dispatch 0xcdcb8)  arm 0xce1dd +0x11fe
0xcf3db  in 0xc7fc0  variant 12 (0xc)  table 0xc044 (dispatch 0xcdd50)  arm 0xce1c9 +0x1212
0xcf3db  in 0xc7fc0  variant 17 (0x11)  table 0xc030 (dispatch 0xc807a)  arm 0xce1b5 +0x1226
0xcf3db  in 0xc7fc0  variant 0 (0x0), 3 (0x3)  table 0xc080 (dispatch 0xcbee4)  arm 0xcc060 +0x337b

xref: load 471.6µs, total 801.6µs

Reading the output

• One line per jump table whose arm contains the address: the address, its function, the enum variant indices that dispatch to that arm, the table address, the dispatching instruction and the arm start with the distance from it (+0x11ea).
• Tables are listed best match first: the arm that starts closest before the address.

Limits

• The arm is the nearest preceding table target; an address deep inside shared code can belong to several arms, and all of them are listed.

Provenance

Recorded with a development build of xref after 0.4.0 on Linux x86-64, on xref.stripped = a stripped xref build (the binary of the home-page examples). Output is unchanged except that whitespace at the end of each line and empty lines at the end of the output are removed; long outputs are cut where marked.

Source: docs/cli/arm.md · generated for the site; edit the Markdown, not this page.