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54 lines
1.9 KiB
Diff
54 lines
1.9 KiB
Diff
https://sourceware.org/git/?p=elfutils.git;a=commit;h=d05241ce690018548857199bd34d7734c7164679
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https://bugs.gentoo.org/955065
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From d05241ce690018548857199bd34d7734c7164679 Mon Sep 17 00:00:00 2001
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From: Serhei Makarov <serhei@serhei.io>
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Date: Mon, 5 May 2025 12:08:55 -0400
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Subject: [PATCH] PR32930 backends/: guard asm/perf_regs.h include
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asm/perf_regs.h is an arch-specific linux include, not present on
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architectures like hppa and m68k that lack perf_events support.
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Only one place we need to fix; others already guard the include by
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architecture, or use architecture-independent headers (e.g.
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linux/perf_events.h).
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* backends/libebl_PERF_FLAGS.h: Only include asm/perf_regs.h on
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architectures where we use it.
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Signed-off-by: Serhei Makarov <serhei@serhei.io>
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---
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backends/libebl_PERF_FLAGS.h | 8 ++++++--
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1 file changed, 6 insertions(+), 2 deletions(-)
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diff --git a/backends/libebl_PERF_FLAGS.h b/backends/libebl_PERF_FLAGS.h
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index 2ed45f0f..51c20ea6 100644
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--- a/backends/libebl_PERF_FLAGS.h
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+++ b/backends/libebl_PERF_FLAGS.h
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@@ -32,8 +32,12 @@
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#define _LIBEBL_PERF_FLAGS_H 1
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#if defined(__linux__)
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+/* XXX Need to exclude __linux__ arches without perf_regs.h. */
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+#if defined(__x86_64__) || defined(__i386__)
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+/* || defined(other_architecture)... */
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# include <asm/perf_regs.h>
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#endif
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+#endif
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#if defined(_ASM_X86_PERF_REGS_H)
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/* See the code in x86_initreg_sample.c for list of required regs and
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@@ -49,8 +53,8 @@
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see the code in tools/perf/util/intel-pt.c intel_pt_add_gp_regs()
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and note how regs are added in the same order as the perf_regs.h enum. */
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#else
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-/* Since asm/perf_regs.h gives the register layout for a different arch,
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- we can't unwind x86_64 frames. */
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+/* Since asm/perf_regs.h is absent, or gives the register layout for a
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+ different arch, we can't unwind i386 and x86_64 frames. */
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#define PERF_FRAME_REGISTERS_I386 0
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#define PERF_FRAME_REGISTERS_X86_64 0
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#endif
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--
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2.43.5
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