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20600b8aab
It's recently changed to allocate dynamically but misses to update some
arch-dependent codes to use perf_sample__user_regs().
Fixes: dc6d2bc2d8 ("perf sample: Make user_regs and intr_regs optional")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: Ian Rogers <irogers@google.com>
Link: https://lore.kernel.org/r/20250214191641.756664-1-namhyung@kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
39 lines
1 KiB
C
39 lines
1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <elfutils/libdwfl.h>
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#include "perf_regs.h"
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#include "../../../util/unwind-libdw.h"
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#include "../../../util/perf_regs.h"
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#include "../../../util/sample.h"
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bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg)
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{
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struct unwind_info *ui = arg;
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struct regs_dump *user_regs = perf_sample__user_regs(ui->sample);
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Dwarf_Word dwarf_regs[PERF_REG_ARM_MAX];
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#define REG(r) ({ \
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Dwarf_Word val = 0; \
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perf_reg_value(&val, user_regs, PERF_REG_ARM_##r); \
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val; \
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})
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dwarf_regs[0] = REG(R0);
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dwarf_regs[1] = REG(R1);
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dwarf_regs[2] = REG(R2);
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dwarf_regs[3] = REG(R3);
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dwarf_regs[4] = REG(R4);
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dwarf_regs[5] = REG(R5);
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dwarf_regs[6] = REG(R6);
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dwarf_regs[7] = REG(R7);
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dwarf_regs[8] = REG(R8);
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dwarf_regs[9] = REG(R9);
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dwarf_regs[10] = REG(R10);
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dwarf_regs[11] = REG(FP);
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dwarf_regs[12] = REG(IP);
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dwarf_regs[13] = REG(SP);
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dwarf_regs[14] = REG(LR);
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dwarf_regs[15] = REG(PC);
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return dwfl_thread_state_registers(thread, 0, PERF_REG_ARM_MAX,
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dwarf_regs);
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}
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