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Diffstat (limited to 'sim/ppc/registers.c')
| -rw-r--r-- | sim/ppc/registers.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/sim/ppc/registers.c b/sim/ppc/registers.c new file mode 100644 index 00000000000..2181cedd94a --- /dev/null +++ b/sim/ppc/registers.c @@ -0,0 +1,169 @@ +/* This file is part of the program psim. + + Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au> + + This program 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; either version 2 of the License, or + (at your option) any later version. + + This program 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 this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + + */ + + +#ifndef _REGISTERS_C_ +#define _REGISTERS_C_ + +#include <ctype.h> + +#include "basics.h" +#include "registers.h" + +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif + +#ifdef HAVE_STRING_H +#include <string.h> +#else +#ifdef HAVE_STRINGS_H +#include <strings.h> +#endif +#endif + + +INLINE_REGISTERS\ +(void) +registers_dump(registers *registers) +{ + int i; + int j; + for (i = 0; i < 8; i++) { + printf_filtered("GPR %2d:", i*4); + for (j = 0; j < 4; j++) { + printf_filtered(" 0x%08lx", (long)registers->gpr[i*4 + j]); + } + printf_filtered("\n"); + } +} + +STATIC_INLINE_REGISTERS\ +(sprs) +find_spr(const char name[]) +{ + sprs spr; + for (spr = 0; spr < nr_of_sprs; spr++) + if (spr_is_valid(spr) + && !strcmp(name, spr_name(spr)) + && spr_index(spr) == spr) + return spr; + return nr_of_sprs; +} + +STATIC_INLINE_REGISTERS\ +(int) +are_digits(const char *digits) +{ + while (isdigit(*digits)) + digits++; + return *digits == '\0'; +} + + +INLINE_REGISTERS\ +(register_descriptions) +register_description(const char reg[]) +{ + register_descriptions description; + + /* try for a general-purpose integer or floating point register */ + if (reg[0] == 'r' && are_digits(reg + 1)) { + description.type = reg_gpr; + description.index = atoi(reg+1); + description.size = sizeof(gpreg); + } + else if (reg[0] == 'f' && are_digits(reg + 1)) { + description.type = reg_fpr; + description.index = atoi(reg+1); + description.size = sizeof(fpreg); + } + else if (!strcmp(reg, "pc") || !strcmp(reg, "nia")) { + description.type = reg_pc; + description.index = 0; + description.size = sizeof(unsigned_word); + } + else if (!strcmp(reg, "sp")) { + description.type = reg_gpr; + description.index = 1; + description.size = sizeof(gpreg); + } + else if (!strcmp(reg, "toc")) { + description.type = reg_gpr; + description.index = 2; + description.size = sizeof(gpreg); + } + else if (!strcmp(reg, "cr") || !strcmp(reg, "cnd")) { + description.type = reg_cr; + description.index = 0; + description.size = sizeof(creg); /* FIXME */ + } + else if (!strcmp(reg, "msr") || !strcmp(reg, "ps")) { + description.type = reg_msr; + description.index = 0; + description.size = sizeof(msreg); + } + else if (!strcmp(reg, "fpscr")) { + description.type = reg_fpscr; + description.index = 0; + description.size = sizeof(fpscreg); + } + else if (!strncmp(reg, "sr", 2) && are_digits(reg + 2)) { + description.type = reg_sr; + description.index = atoi(reg+2); + description.size = sizeof(sreg); + } + else if (!strcmp(reg, "cnt")) { + description.type = reg_spr; + description.index = spr_ctr; + description.size = sizeof(spreg); + } + else if (!strcmp(reg, "insns")) { + description.type = reg_insns; + description.index = spr_ctr; + description.size = sizeof(unsigned_word); + } + else if (!strcmp(reg, "stalls")) { + description.type = reg_stalls; + description.index = spr_ctr; + description.size = sizeof(unsigned_word); + } + else if (!strcmp(reg, "cycles")) { + description.type = reg_cycles; + description.index = spr_ctr; + description.size = sizeof(unsigned_word); + } + else { + sprs spr = find_spr(reg); + if (spr != nr_of_sprs) { + description.type = reg_spr; + description.index = spr; + description.size = sizeof(spreg); + } + else { + description.type = reg_invalid; + description.index = 0; + description.size = 0; + } + } + return description; +} + +#endif /* _REGISTERS_C_ */ |