1*bf4e799aSIan Rogers // SPDX-License-Identifier: GPL-2.0-or-later 2*bf4e799aSIan Rogers /* 3*bf4e799aSIan Rogers * dwarf-regs.c : Mapping of DWARF debug register numbers into register names. 4*bf4e799aSIan Rogers * Extracted from probe-finder.c 5*bf4e799aSIan Rogers * 6*bf4e799aSIan Rogers * Written by Masami Hiramatsu <mhiramat@redhat.com> 7*bf4e799aSIan Rogers */ 8*bf4e799aSIan Rogers 9*bf4e799aSIan Rogers #include <errno.h> /* for EINVAL */ 10*bf4e799aSIan Rogers #include <string.h> /* for strcmp */ 11*bf4e799aSIan Rogers #include <linux/kernel.h> /* for ARRAY_SIZE */ 12*bf4e799aSIan Rogers #include <dwarf-regs.h> 13*bf4e799aSIan Rogers 14*bf4e799aSIan Rogers struct dwarf_regs_idx { 15*bf4e799aSIan Rogers const char *name; 16*bf4e799aSIan Rogers int idx; 17*bf4e799aSIan Rogers }; 18*bf4e799aSIan Rogers 19*bf4e799aSIan Rogers static const struct dwarf_regs_idx x86_regidx_table[] = { 20*bf4e799aSIan Rogers { "rax", 0 }, { "eax", 0 }, { "ax", 0 }, { "al", 0 }, 21*bf4e799aSIan Rogers { "rdx", 1 }, { "edx", 1 }, { "dx", 1 }, { "dl", 1 }, 22*bf4e799aSIan Rogers { "rcx", 2 }, { "ecx", 2 }, { "cx", 2 }, { "cl", 2 }, 23*bf4e799aSIan Rogers { "rbx", 3 }, { "edx", 3 }, { "bx", 3 }, { "bl", 3 }, 24*bf4e799aSIan Rogers { "rsi", 4 }, { "esi", 4 }, { "si", 4 }, { "sil", 4 }, 25*bf4e799aSIan Rogers { "rdi", 5 }, { "edi", 5 }, { "di", 5 }, { "dil", 5 }, 26*bf4e799aSIan Rogers { "rbp", 6 }, { "ebp", 6 }, { "bp", 6 }, { "bpl", 6 }, 27*bf4e799aSIan Rogers { "rsp", 7 }, { "esp", 7 }, { "sp", 7 }, { "spl", 7 }, 28*bf4e799aSIan Rogers { "r8", 8 }, { "r8d", 8 }, { "r8w", 8 }, { "r8b", 8 }, 29*bf4e799aSIan Rogers { "r9", 9 }, { "r9d", 9 }, { "r9w", 9 }, { "r9b", 9 }, 30*bf4e799aSIan Rogers { "r10", 10 }, { "r10d", 10 }, { "r10w", 10 }, { "r10b", 10 }, 31*bf4e799aSIan Rogers { "r11", 11 }, { "r11d", 11 }, { "r11w", 11 }, { "r11b", 11 }, 32*bf4e799aSIan Rogers { "r12", 12 }, { "r12d", 12 }, { "r12w", 12 }, { "r12b", 12 }, 33*bf4e799aSIan Rogers { "r13", 13 }, { "r13d", 13 }, { "r13w", 13 }, { "r13b", 13 }, 34*bf4e799aSIan Rogers { "r14", 14 }, { "r14d", 14 }, { "r14w", 14 }, { "r14b", 14 }, 35*bf4e799aSIan Rogers { "r15", 15 }, { "r15d", 15 }, { "r15w", 15 }, { "r15b", 15 }, 36*bf4e799aSIan Rogers { "rip", DWARF_REG_PC }, 37*bf4e799aSIan Rogers }; 38*bf4e799aSIan Rogers 39*bf4e799aSIan Rogers int get_x86_regnum(const char *name) 40*bf4e799aSIan Rogers { 41*bf4e799aSIan Rogers unsigned int i; 42*bf4e799aSIan Rogers 43*bf4e799aSIan Rogers if (*name != '%') 44*bf4e799aSIan Rogers return -EINVAL; 45*bf4e799aSIan Rogers 46*bf4e799aSIan Rogers for (i = 0; i < ARRAY_SIZE(x86_regidx_table); i++) 47*bf4e799aSIan Rogers if (!strcmp(x86_regidx_table[i].name, name + 1)) 48*bf4e799aSIan Rogers return x86_regidx_table[i].idx; 49*bf4e799aSIan Rogers return -ENOENT; 50*bf4e799aSIan Rogers } 51