cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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dwarf-regs.c (1975B)

      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * dwarf-regs.c : Mapping of DWARF debug register numbers into register names.
      4 *
      5 * Written by: Masami Hiramatsu <mhiramat@kernel.org>
      6 */
      7
      8#include <debug.h>
      9#include <dwarf-regs.h>
     10#include <elf.h>
     11#include <linux/kernel.h>
     12
     13#ifndef EM_AARCH64
     14#define EM_AARCH64	183  /* ARM 64 bit */
     15#endif
     16
     17/* Define const char * {arch}_register_tbl[] */
     18#define DEFINE_DWARF_REGSTR_TABLE
     19#include "../arch/x86/include/dwarf-regs-table.h"
     20#include "../arch/arm/include/dwarf-regs-table.h"
     21#include "../arch/arm64/include/dwarf-regs-table.h"
     22#include "../arch/sh/include/dwarf-regs-table.h"
     23#include "../arch/powerpc/include/dwarf-regs-table.h"
     24#include "../arch/s390/include/dwarf-regs-table.h"
     25#include "../arch/sparc/include/dwarf-regs-table.h"
     26#include "../arch/xtensa/include/dwarf-regs-table.h"
     27#include "../arch/mips/include/dwarf-regs-table.h"
     28
     29#define __get_dwarf_regstr(tbl, n) (((n) < ARRAY_SIZE(tbl)) ? (tbl)[(n)] : NULL)
     30
     31/* Return architecture dependent register string (for kprobe-tracer) */
     32const char *get_dwarf_regstr(unsigned int n, unsigned int machine)
     33{
     34	switch (machine) {
     35	case EM_NONE:	/* Generic arch - use host arch */
     36		return get_arch_regstr(n);
     37	case EM_386:
     38		return __get_dwarf_regstr(x86_32_regstr_tbl, n);
     39	case EM_X86_64:
     40		return __get_dwarf_regstr(x86_64_regstr_tbl, n);
     41	case EM_ARM:
     42		return __get_dwarf_regstr(arm_regstr_tbl, n);
     43	case EM_AARCH64:
     44		return __get_dwarf_regstr(aarch64_regstr_tbl, n);
     45	case EM_SH:
     46		return __get_dwarf_regstr(sh_regstr_tbl, n);
     47	case EM_S390:
     48		return __get_dwarf_regstr(s390_regstr_tbl, n);
     49	case EM_PPC:
     50	case EM_PPC64:
     51		return __get_dwarf_regstr(powerpc_regstr_tbl, n);
     52	case EM_SPARC:
     53	case EM_SPARCV9:
     54		return __get_dwarf_regstr(sparc_regstr_tbl, n);
     55	case EM_XTENSA:
     56		return __get_dwarf_regstr(xtensa_regstr_tbl, n);
     57	case EM_MIPS:
     58		return __get_dwarf_regstr(mips_regstr_tbl, n);
     59	default:
     60		pr_err("ELF MACHINE %x is not supported.\n", machine);
     61	}
     62	return NULL;
     63}