forked from luck/tmp_suning_uos_patched
s390/perf: add perf register support for floating-point registers
For correct unwinding of user space processes, the floating-point register contents are required. For example, leaf functions might use fp registers to temporarily store the return address. Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Reviewed-and-tested-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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@ -49,6 +49,38 @@ static inline const char *perf_reg_name(int id)
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return "R14";
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case PERF_REG_S390_R15:
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return "R15";
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case PERF_REG_S390_FP0:
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return "FP0";
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case PERF_REG_S390_FP1:
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return "FP1";
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case PERF_REG_S390_FP2:
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return "FP2";
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case PERF_REG_S390_FP3:
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return "FP3";
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case PERF_REG_S390_FP4:
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return "FP4";
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case PERF_REG_S390_FP5:
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return "FP5";
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case PERF_REG_S390_FP6:
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return "FP6";
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case PERF_REG_S390_FP7:
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return "FP7";
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case PERF_REG_S390_FP8:
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return "FP8";
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case PERF_REG_S390_FP9:
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return "FP9";
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case PERF_REG_S390_FP10:
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return "FP10";
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case PERF_REG_S390_FP11:
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return "FP11";
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case PERF_REG_S390_FP12:
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return "FP12";
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case PERF_REG_S390_FP13:
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return "FP13";
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case PERF_REG_S390_FP14:
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return "FP14";
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case PERF_REG_S390_FP15:
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return "FP15";
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case PERF_REG_S390_MASK:
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return "MASK";
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case PERF_REG_S390_PC:
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@ -37,9 +37,27 @@ bool libdw__arch_set_initial_registers(Dwfl_Thread *thread, void *arg)
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dwarf_regs[13] = REG(R13);
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dwarf_regs[14] = REG(R14);
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dwarf_regs[15] = REG(R15);
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dwarf_regs[16] = REG(FP0);
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dwarf_regs[17] = REG(FP2);
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dwarf_regs[18] = REG(FP4);
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dwarf_regs[19] = REG(FP6);
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dwarf_regs[20] = REG(FP1);
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dwarf_regs[21] = REG(FP3);
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dwarf_regs[22] = REG(FP5);
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dwarf_regs[23] = REG(FP7);
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dwarf_regs[24] = REG(FP8);
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dwarf_regs[25] = REG(FP10);
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dwarf_regs[26] = REG(FP12);
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dwarf_regs[27] = REG(FP14);
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dwarf_regs[28] = REG(FP9);
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dwarf_regs[29] = REG(FP11);
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dwarf_regs[30] = REG(FP13);
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dwarf_regs[31] = REG(FP15);
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dwarf_regs[64] = REG(MASK);
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dwarf_regs[65] = REG(PC);
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dwfl_thread_state_register_pc(thread, dwarf_regs[65]);
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return dwfl_thread_state_registers(thread, 0, 16, dwarf_regs);
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return dwfl_thread_state_registers(thread, 0, 32, dwarf_regs);
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}
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