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perf annotate: Generalize handling of 'ret' instructions

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Introduce helper to detect 'ret' instructions and use the same in the TUI.
A helper is needed since some architectures such as powerpc have more
than one return instruction.

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anton Blanchard <anton@ozlabs.org>
Cc: Daniel Axtens <dja@axtens.net>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Link: http://lkml.kernel.org/r/1466769240-12376-5-git-send-email-ravi.bangoria@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Naveen N. Rao 2016-06-24 17:23:58 +05:30 committed by Arnaldo Carvalho de Melo
parent 9f776ba11c
commit 6ef9492915
3 changed files with 20 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
tools/perf/ui/browsers/annotate.c
View File

@ -223,16 +223,14 @@ static void annotate_browser__write(struct ui_browser *browser, void *entry, int
} else if (ins__is_call(dl->ins)) {
ui_browser__write_graph(browser, SLSMG_RARROW_CHAR);
SLsmg_write_char(' ');
} else if (ins__is_ret(dl->ins)) {
ui_browser__write_graph(browser, SLSMG_LARROW_CHAR);
SLsmg_write_char(' ');
} else {
ui_browser__write_nstring(browser, " ", 2);
}
} else {
if (strcmp(dl->name, "retq")) {
ui_browser__write_nstring(browser, " ", 2);
} else {
ui_browser__write_graph(browser, SLSMG_LARROW_CHAR);
SLsmg_write_char(' ');
}
ui_browser__write_nstring(browser, " ", 2);
}
disasm_line__scnprintf(dl, bf, sizeof(bf), !annotate_browser__opts.use_offset);
@ -843,14 +841,14 @@ static int annotate_browser__run(struct annotate_browser *browser,
ui_helpline__puts("Huh? No selection. Report to linux-kernel@vger.kernel.org");
else if (browser->selection->offset == -1)
ui_helpline__puts("Actions are only available for assembly lines.");
else if (!browser->selection->ins) {
if (strcmp(browser->selection->name, "retq"))
goto show_sup_ins;
else if (!browser->selection->ins)
goto show_sup_ins;
else if (ins__is_ret(browser->selection->ins))
goto out;
} else if (!(annotate_browser__jump(browser) ||
else if (!(annotate_browser__jump(browser) ||
annotate_browser__callq(browser, evsel, hbt))) {
show_sup_ins:
ui_helpline__puts("Actions are only available for 'callq', 'retq' & jump instructions.");
ui_helpline__puts("Actions are only available for function call/return & jump/branch instructions.");
}
continue;
case 't':

10
tools/perf/util/annotate.c
View File

@ -354,6 +354,15 @@ static struct ins_ops nop_ops = {
.scnprintf = nop__scnprintf,
};
static struct ins_ops ret_ops = {
.scnprintf = ins__raw_scnprintf,
};
bool ins__is_ret(const struct ins *ins)
{
return ins->ops == &ret_ops;
}
static struct ins instructions[] = {
{ .name = "add", .ops = &mov_ops, },
{ .name = "addl", .ops = &mov_ops, },
@ -444,6 +453,7 @@ static struct ins instructions[] = {
{ .name = "xadd", .ops = &mov_ops, },
{ .name = "xbeginl", .ops = &jump_ops, },
{ .name = "xbeginq", .ops = &jump_ops, },
{ .name = "retq", .ops = &ret_ops, },
};
static int ins__key_cmp(const void *name, const void *insp)

1
tools/perf/util/annotate.h
View File

@ -48,6 +48,7 @@ struct ins {
bool ins__is_jump(const struct ins *ins);
bool ins__is_call(const struct ins *ins);
bool ins__is_ret(const struct ins *ins);
int ins__scnprintf(struct ins *ins, char *bf, size_t size, struct ins_operands *ops);
struct annotation;