diff options
| author | Alexandre Chartre <alexandre.chartre@oracle.com> | 2025-11-21 10:53:38 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2025-11-24 20:40:48 +0100 |
| commit | 07d70b271a6fc4f546b153081f3685931561be7b (patch) | |
| tree | fc5c4fd70c517eba5ce5f3e5b72c470f11ec6227 /tools | |
| parent | 56967b9a772298ad276858ddab5a655b1d167623 (diff) | |
objtool: Compact output for alternatives with one instruction
When disassembling, if an instruction has alternatives which are all
made of a single instruction then print each alternative on a single
line (instruction + description) so that the output is more compact.
Signed-off-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Link: https://patch.msgid.link/20251121095340.464045-29-alexandre.chartre@oracle.com
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/objtool/disas.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/tools/objtool/disas.c b/tools/objtool/disas.c index 731c4495b53c..a4f905eac4e6 100644 --- a/tools/objtool/disas.c +++ b/tools/objtool/disas.c @@ -863,6 +863,7 @@ static void disas_alt_print_compact(char *alt_name, struct disas_alt *dalts, int alt_count, int insn_count) { struct instruction *orig_insn; + int width; int i, j; int len; @@ -871,6 +872,27 @@ static void disas_alt_print_compact(char *alt_name, struct disas_alt *dalts, len = disas_print(stdout, orig_insn->sec, orig_insn->offset, 0, NULL); printf("%s\n", alt_name); + /* + * If all alternatives have a single instruction then print each + * alternative on a single line. Otherwise, print alternatives + * one above the other with a clear separation. + */ + + if (insn_count == 1) { + width = 0; + for (i = 0; i < alt_count; i++) { + if (dalts[i].width > width) + width = dalts[i].width; + } + + for (i = 0; i < alt_count; i++) { + printf("%*s= %-*s (if %s)\n", len, "", width, + dalts[i].insn[0].str, dalts[i].name); + } + + return; + } + for (i = 0; i < alt_count; i++) { printf("%*s= %s\n", len, "", dalts[i].name); for (j = 0; j < insn_count; j++) { |