105 lines
2.8 KiB
C
105 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* dwarf-regs.c : Mapping of DWARF debug register numbers into register names.
|
|
*
|
|
* Written by: Masami Hiramatsu <mhiramat@kernel.org>
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <debug.h>
|
|
#include <dwarf-regs.h>
|
|
#include <elf.h>
|
|
#include <errno.h>
|
|
#include <linux/kernel.h>
|
|
|
|
#ifndef EM_AARCH64
|
|
#define EM_AARCH64 183 /* ARM 64 bit */
|
|
#endif
|
|
|
|
#ifndef EM_LOONGARCH
|
|
#define EM_LOONGARCH 258 /* LoongArch */
|
|
#endif
|
|
|
|
/* Define const char * {arch}_register_tbl[] */
|
|
#define DEFINE_DWARF_REGSTR_TABLE
|
|
#include "../arch/x86/include/dwarf-regs-table.h"
|
|
#include "../arch/arm/include/dwarf-regs-table.h"
|
|
#include "../arch/arm64/include/dwarf-regs-table.h"
|
|
#include "../arch/sh/include/dwarf-regs-table.h"
|
|
#include "../arch/powerpc/include/dwarf-regs-table.h"
|
|
#include "../arch/s390/include/dwarf-regs-table.h"
|
|
#include "../arch/sparc/include/dwarf-regs-table.h"
|
|
#include "../arch/xtensa/include/dwarf-regs-table.h"
|
|
#include "../arch/mips/include/dwarf-regs-table.h"
|
|
#include "../arch/loongarch/include/dwarf-regs-table.h"
|
|
|
|
#define __get_dwarf_regstr(tbl, n) (((n) < ARRAY_SIZE(tbl)) ? (tbl)[(n)] : NULL)
|
|
|
|
/* Return architecture dependent register string (for kprobe-tracer) */
|
|
const char *get_dwarf_regstr(unsigned int n, unsigned int machine)
|
|
{
|
|
switch (machine) {
|
|
case EM_NONE: /* Generic arch - use host arch */
|
|
return get_arch_regstr(n);
|
|
case EM_386:
|
|
return __get_dwarf_regstr(x86_32_regstr_tbl, n);
|
|
case EM_X86_64:
|
|
return __get_dwarf_regstr(x86_64_regstr_tbl, n);
|
|
case EM_ARM:
|
|
return __get_dwarf_regstr(arm_regstr_tbl, n);
|
|
case EM_AARCH64:
|
|
return __get_dwarf_regstr(aarch64_regstr_tbl, n);
|
|
case EM_SH:
|
|
return __get_dwarf_regstr(sh_regstr_tbl, n);
|
|
case EM_S390:
|
|
return __get_dwarf_regstr(s390_regstr_tbl, n);
|
|
case EM_PPC:
|
|
case EM_PPC64:
|
|
return __get_dwarf_regstr(powerpc_regstr_tbl, n);
|
|
case EM_SPARC:
|
|
case EM_SPARCV9:
|
|
return __get_dwarf_regstr(sparc_regstr_tbl, n);
|
|
case EM_XTENSA:
|
|
return __get_dwarf_regstr(xtensa_regstr_tbl, n);
|
|
case EM_MIPS:
|
|
return __get_dwarf_regstr(mips_regstr_tbl, n);
|
|
case EM_LOONGARCH:
|
|
return __get_dwarf_regstr(loongarch_regstr_tbl, n);
|
|
default:
|
|
pr_err("ELF MACHINE %x is not supported.\n", machine);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
__weak int get_arch_regnum(const char *name __maybe_unused)
|
|
{
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
/* Return DWARF register number from architecture register name */
|
|
int get_dwarf_regnum(const char *name, unsigned int machine)
|
|
{
|
|
char *regname = strdup(name);
|
|
int reg = -1;
|
|
char *p;
|
|
|
|
if (regname == NULL)
|
|
return -EINVAL;
|
|
|
|
/* For convenience, remove trailing characters */
|
|
p = strpbrk(regname, " ,)");
|
|
if (p)
|
|
*p = '\0';
|
|
|
|
switch (machine) {
|
|
case EM_NONE: /* Generic arch - use host arch */
|
|
reg = get_arch_regnum(regname);
|
|
break;
|
|
default:
|
|
pr_err("ELF MACHINE %x is not supported.\n", machine);
|
|
}
|
|
free(regname);
|
|
return reg;
|
|
}
|