diff options
Diffstat (limited to 'backends/x86_64_regs.c')
| -rw-r--r-- | backends/x86_64_regs.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/backends/x86_64_regs.c b/backends/x86_64_regs.c new file mode 100644 index 0000000..8eb0d33 --- /dev/null +++ b/backends/x86_64_regs.c @@ -0,0 +1,182 @@ +/* Register names and numbers for x86-64 DWARF. + Copyright (C) 2005, 2006, 2007 Red Hat, Inc. + This file is part of Red Hat elfutils. + + Red Hat elfutils is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by the + Free Software Foundation; version 2 of the License. + + Red Hat 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 a copy of the GNU General Public License along + with Red Hat elfutils; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. + + Red Hat elfutils is an included package of the Open Invention Network. + An included package of the Open Invention Network is a package for which + Open Invention Network licensees cross-license their patents. No patent + license is granted, either expressly or impliedly, by designation as an + included package. Should you wish to participate in the Open Invention + Network licensing program, please visit www.openinventionnetwork.com + <http://www.openinventionnetwork.com>. */ + +#ifdef HAVE_CONFIG_H +# include <config.h> +#endif + +#include <assert.h> +#include <dwarf.h> +#include <string.h> + +#define BACKEND x86_64_ +#include "libebl_CPU.h" + +ssize_t +x86_64_register_info (Ebl *ebl __attribute__ ((unused)), + int regno, char *name, size_t namelen, + const char **prefix, const char **setname, + int *bits, int *type) +{ + if (name == NULL) + return 67; + + if (regno < 0 || regno > 66 || namelen < 7) + return -1; + + *prefix = "%"; + *bits = 64; + *type = DW_ATE_unsigned; + if (regno < 17) + { + *setname = "integer"; + *type = DW_ATE_signed; + } + else if (regno < 33) + { + *setname = "SSE"; + *bits = 128; + } + else if (regno < 41) + { + *setname = "x87"; + *type = DW_ATE_float; + *bits = 80; + } + else if (regno < 49) + *setname = "MMX"; + else if (regno > 49 && regno < 60) + { + *setname = "segment"; + *bits = 16; + } + else + *setname = "control"; + + switch (regno) + { + static const char baseregs[][2] = + { + "ax", "dx", "cx", "bx", "si", "di", "bp", "sp" + }; + + case 6 ... 7: + *type = DW_ATE_address; + case 0 ... 5: + name[0] = 'r'; + name[1] = baseregs[regno][0]; + name[2] = baseregs[regno][1]; + namelen = 3; + break; + + case 8 ... 9: + name[0] = 'r'; + name[1] = regno - 8 + '8'; + namelen = 2; + break; + + case 10 ... 15: + name[0] = 'r'; + name[1] = '1'; + name[2] = regno - 10 + '0'; + namelen = 3; + break; + + case 16: + *type = DW_ATE_address; + name[0] = 'r'; + name[1] = 'i'; + name[2] = 'p'; + namelen = 3; + break; + + case 17 ... 26: + name[0] = 'x'; + name[1] = 'm'; + name[2] = 'm'; + name[3] = regno - 17 + '0'; + namelen = 4; + break; + + case 27 ... 32: + name[0] = 'x'; + name[1] = 'm'; + name[2] = 'm'; + name[3] = '1'; + name[4] = regno - 27 + '0'; + namelen = 5; + break; + + case 33 ... 40: + name[0] = 's'; + name[1] = 't'; + name[2] = regno - 33 + '0'; + namelen = 3; + break; + + case 41 ... 48: + name[0] = 'm'; + name[1] = 'm'; + name[2] = regno - 41 + '0'; + namelen = 3; + break; + + case 50 ... 55: + name[0] = "ecsdfg"[regno - 50]; + name[1] = 's'; + namelen = 2; + break; + + case 58 ... 59: + *type = DW_ATE_address; + *bits = 64; + name[0] = regno - 58 + 'f'; + return stpcpy (&name[1], "s.base") + 1 - name; + + case 49: + *setname = "integer"; + return stpcpy (name, "rflags") + 1 - name; + case 62: + return stpcpy (name, "tr") + 1 - name; + case 63: + return stpcpy (name, "ldtr") + 1 - name; + case 64: + return stpcpy (name, "mxcsr") + 1 - name; + + case 65 ... 66: + *bits = 16; + name[0] = 'f'; + name[1] = "cs"[regno - 65]; + name[2] = 'w'; + namelen = 3; + break; + + default: + return 0; + } + + name[namelen++] = '\0'; + return namelen; +} |