1*fead7960SIan Munsie /* 2*fead7960SIan Munsie * Mapping of DWARF debug register numbers into register names. 3*fead7960SIan Munsie * 4*fead7960SIan Munsie * Copyright (C) 2010 Ian Munsie, IBM Corporation. 5*fead7960SIan Munsie * 6*fead7960SIan Munsie * This program is free software; you can redistribute it and/or 7*fead7960SIan Munsie * modify it under the terms of the GNU General Public License 8*fead7960SIan Munsie * as published by the Free Software Foundation; either version 9*fead7960SIan Munsie * 2 of the License, or (at your option) any later version. 10*fead7960SIan Munsie */ 11*fead7960SIan Munsie 12*fead7960SIan Munsie #include <libio.h> 13*fead7960SIan Munsie #include <dwarf-regs.h> 14*fead7960SIan Munsie 15*fead7960SIan Munsie 16*fead7960SIan Munsie struct pt_regs_dwarfnum { 17*fead7960SIan Munsie const char *name; 18*fead7960SIan Munsie unsigned int dwarfnum; 19*fead7960SIan Munsie }; 20*fead7960SIan Munsie 21*fead7960SIan Munsie #define STR(s) #s 22*fead7960SIan Munsie #define REG_DWARFNUM_NAME(r, num) {.name = r, .dwarfnum = num} 23*fead7960SIan Munsie #define GPR_DWARFNUM_NAME(num) \ 24*fead7960SIan Munsie {.name = STR(%gpr##num), .dwarfnum = num} 25*fead7960SIan Munsie #define REG_DWARFNUM_END {.name = NULL, .dwarfnum = 0} 26*fead7960SIan Munsie 27*fead7960SIan Munsie /* 28*fead7960SIan Munsie * Reference: 29*fead7960SIan Munsie * http://refspecs.linuxfoundation.org/ELF/ppc64/PPC-elf64abi-1.9.html 30*fead7960SIan Munsie */ 31*fead7960SIan Munsie static const struct pt_regs_dwarfnum regdwarfnum_table[] = { 32*fead7960SIan Munsie GPR_DWARFNUM_NAME(0), 33*fead7960SIan Munsie GPR_DWARFNUM_NAME(1), 34*fead7960SIan Munsie GPR_DWARFNUM_NAME(2), 35*fead7960SIan Munsie GPR_DWARFNUM_NAME(3), 36*fead7960SIan Munsie GPR_DWARFNUM_NAME(4), 37*fead7960SIan Munsie GPR_DWARFNUM_NAME(5), 38*fead7960SIan Munsie GPR_DWARFNUM_NAME(6), 39*fead7960SIan Munsie GPR_DWARFNUM_NAME(7), 40*fead7960SIan Munsie GPR_DWARFNUM_NAME(8), 41*fead7960SIan Munsie GPR_DWARFNUM_NAME(9), 42*fead7960SIan Munsie GPR_DWARFNUM_NAME(10), 43*fead7960SIan Munsie GPR_DWARFNUM_NAME(11), 44*fead7960SIan Munsie GPR_DWARFNUM_NAME(12), 45*fead7960SIan Munsie GPR_DWARFNUM_NAME(13), 46*fead7960SIan Munsie GPR_DWARFNUM_NAME(14), 47*fead7960SIan Munsie GPR_DWARFNUM_NAME(15), 48*fead7960SIan Munsie GPR_DWARFNUM_NAME(16), 49*fead7960SIan Munsie GPR_DWARFNUM_NAME(17), 50*fead7960SIan Munsie GPR_DWARFNUM_NAME(18), 51*fead7960SIan Munsie GPR_DWARFNUM_NAME(19), 52*fead7960SIan Munsie GPR_DWARFNUM_NAME(20), 53*fead7960SIan Munsie GPR_DWARFNUM_NAME(21), 54*fead7960SIan Munsie GPR_DWARFNUM_NAME(22), 55*fead7960SIan Munsie GPR_DWARFNUM_NAME(23), 56*fead7960SIan Munsie GPR_DWARFNUM_NAME(24), 57*fead7960SIan Munsie GPR_DWARFNUM_NAME(25), 58*fead7960SIan Munsie GPR_DWARFNUM_NAME(26), 59*fead7960SIan Munsie GPR_DWARFNUM_NAME(27), 60*fead7960SIan Munsie GPR_DWARFNUM_NAME(28), 61*fead7960SIan Munsie GPR_DWARFNUM_NAME(29), 62*fead7960SIan Munsie GPR_DWARFNUM_NAME(30), 63*fead7960SIan Munsie GPR_DWARFNUM_NAME(31), 64*fead7960SIan Munsie REG_DWARFNUM_NAME("%msr", 66), 65*fead7960SIan Munsie REG_DWARFNUM_NAME("%ctr", 109), 66*fead7960SIan Munsie REG_DWARFNUM_NAME("%link", 108), 67*fead7960SIan Munsie REG_DWARFNUM_NAME("%xer", 101), 68*fead7960SIan Munsie REG_DWARFNUM_NAME("%dar", 119), 69*fead7960SIan Munsie REG_DWARFNUM_NAME("%dsisr", 118), 70*fead7960SIan Munsie REG_DWARFNUM_END, 71*fead7960SIan Munsie }; 72*fead7960SIan Munsie 73*fead7960SIan Munsie /** 74*fead7960SIan Munsie * get_arch_regstr() - lookup register name from it's DWARF register number 75*fead7960SIan Munsie * @n: the DWARF register number 76*fead7960SIan Munsie * 77*fead7960SIan Munsie * get_arch_regstr() returns the name of the register in struct 78*fead7960SIan Munsie * regdwarfnum_table from it's DWARF register number. If the register is not 79*fead7960SIan Munsie * found in the table, this returns NULL; 80*fead7960SIan Munsie */ 81*fead7960SIan Munsie const char *get_arch_regstr(unsigned int n) 82*fead7960SIan Munsie { 83*fead7960SIan Munsie const struct pt_regs_dwarfnum *roff; 84*fead7960SIan Munsie for (roff = regdwarfnum_table; roff->name != NULL; roff++) 85*fead7960SIan Munsie if (roff->dwarfnum == n) 86*fead7960SIan Munsie return roff->name; 87*fead7960SIan Munsie return NULL; 88*fead7960SIan Munsie } 89