diff options
Diffstat (limited to 'src/backends/aarch64_regs.c')
-rw-r--r-- | src/backends/aarch64_regs.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/src/backends/aarch64_regs.c b/src/backends/aarch64_regs.c new file mode 100644 index 00000000..7a8a6780 --- /dev/null +++ b/src/backends/aarch64_regs.c @@ -0,0 +1,102 @@ +/* Register names and numbers for AArch64 DWARF. + Copyright (C) 2013, 2014 Red Hat, Inc. + This file is part of elfutils. + + This file is free software; you can redistribute it and/or modify + it under the terms of either + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at + your option) any later version + + or + + * the GNU General Public License as published by the Free + Software Foundation; either version 2 of the License, or (at + your option) any later version + + or both in parallel, as here. + + elfutils is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received copies of the GNU General Public License and + the GNU Lesser General Public License along with this program. If + not, see <http://www.gnu.org/licenses/>. */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <stdio.h> +#include <string.h> +#include <dwarf.h> +#include <stdarg.h> + +#define BACKEND aarch64_ +#include "libebl_CPU.h" + +ssize_t +aarch64_register_info (Ebl *ebl __attribute__ ((unused)), + int regno, char *name, size_t namelen, + const char **prefix, const char **setnamep, + int *bits, int *typep) +{ + if (name == NULL) + return 128; + + __attribute__ ((format (printf, 3, 4))) + ssize_t + regtype (const char *setname, int type, const char *fmt, ...) + { + *setnamep = setname; + *typep = type; + + va_list ap; + va_start (ap, fmt); + int s = vsnprintf (name, namelen, fmt, ap); + va_end(ap); + + if (s < 0 || (unsigned) s >= namelen) + return -1; + return s + 1; + } + + *prefix = ""; + *bits = 64; + + switch (regno) + { + case 0 ... 30: + return regtype ("integer", DW_ATE_signed, "x%d", regno); + + case 31: + return regtype ("integer", DW_ATE_address, "sp"); + + case 32: + return 0; + + case 33: + return regtype ("integer", DW_ATE_address, "elr"); + + case 34 ... 63: + return 0; + + case 64 ... 95: + /* FP/SIMD register file supports a variety of data types--it + can be thought of as a register holding a single integer or + floating-point value, or a vector of 8-, 16-, 32- or 64-bit + integers. 128-bit quad-word is the only singular value that + covers the whole register, so mark the register thus. */ + *bits = 128; + return regtype ("FP/SIMD", DW_ATE_unsigned, "v%d", regno - 64); + + case 96 ... 127: + return 0; + + default: + return -1; + } +} |