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97eac381b1
Adding libdw DWARF post unwind support, which is part of elfutils-devel/libdw-dev package from version 0.158. The new code is contained in unwin-libdw.c object, and implements unwind__get_entries unwind interface function. Signed-off-by: Jean Pihet <jean.pihet@linaro.org> Reviewed-by: Will Deacon <will.deacon@arm.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1400229672-16104-4-git-send-email-jean.pihet@linaro.org Signed-off-by: Jiri Olsa <jolsa@kernel.org>
37 lines
950 B
C
37 lines
950 B
C
#include <elfutils/libdwfl.h>
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#include "../../util/unwind-libdw.h"
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#include "../../util/perf_regs.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 = &ui->sample->user_regs;
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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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