/* CRIS base simulator support code Copyright (C) 2004, 2005 Free Software Foundation, Inc. Contributed by Axis Communications. This file is part of the GNU simulators. 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, 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. */ /* The infrastructure is based on that of i960.c. */ #define WANT_CPU #include "sim-main.h" #include "cgen-mem.h" #include "cgen-ops.h" #define MY(f) XCONCAT3(crisv,BASENUM,f) /* Dispatcher for break insn. */ USI MY (f_break_handler) (SIM_CPU *cpu, USI breaknum, USI pc) { SIM_DESC sd = CPU_STATE (cpu); USI ret = pc + 2; MY (f_h_pc_set) (cpu, ret); /* FIXME: Error out if IBR or ERP set. */ switch (breaknum) { case 13: MY (f_h_gr_set (cpu, 10, cris_break_13_handler (cpu, MY (f_h_gr_get (cpu, 9)), MY (f_h_gr_get (cpu, 10)), MY (f_h_gr_get (cpu, 11)), MY (f_h_gr_get (cpu, 12)), MY (f_h_gr_get (cpu, 13)), MY (f_h_sr_get (cpu, 7)), MY (f_h_sr_get (cpu, 11)), pc))); break; case 14: sim_io_printf (sd, "%x\n", MY (f_h_gr_get (cpu, 3))); break; case 15: /* Re-use the Linux exit call. */ cris_break_13_handler (cpu, /* TARGET_SYS_exit */ 1, 0, 0, 0, 0, 0, 0, pc); default: abort (); } return MY (f_h_pc_get) (cpu); } /* Accessor function for simulator internal use. Note the contents of BUF are in target byte order. */ int MY (f_fetch_register) (SIM_CPU *current_cpu, int rn, unsigned char *buf, int len ATTRIBUTE_UNUSED) { SETTSI (buf, XCONCAT3(crisv,BASENUM,f_h_gr_get) (current_cpu, rn)); return -1; } /* Accessor function for simulator internal use. Note the contents of BUF are in target byte order. */ int MY (f_store_register) (SIM_CPU *current_cpu, int rn, unsigned char *buf, int len ATTRIBUTE_UNUSED) { XCONCAT3(crisv,BASENUM,f_h_gr_set) (current_cpu, rn, GETTSI (buf)); return -1; } #if WITH_PROFILE_MODEL_P /* FIXME: Some of these should be inline or macros. Later. */ /* Initialize cycle counting for an insn. FIRST_P is non-zero if this is the first insn in a set of parallel insns. */ void MY (f_model_insn_before) (SIM_CPU *current_cpu, int first_p ATTRIBUTE_UNUSED) { /* To give the impression that we actually know what PC is, we have to dump register contents *before* the *next* insn, not after the *previous* insn. Uhh... */ /* FIXME: Move this to separate, overridable function. */ if ((CPU_CRIS_MISC_PROFILE (current_cpu)->flags & FLAG_CRIS_MISC_PROFILE_XSIM_TRACE) #ifdef GET_H_INSN_PREFIXED_P /* For versions with prefixed insns, trace the combination as one insn. */ && !GET_H_INSN_PREFIXED_P () #endif && 1) { int i; char flags[7]; SIM_DESC sd = CPU_STATE (current_cpu); cris_trace_printf (sd, current_cpu, "%lx ", (unsigned long) (CPU (h_pc))); for (i = 0; i < 15; i++) cris_trace_printf (sd, current_cpu, "%lx ", (unsigned long) (XCONCAT3(crisv,BASENUM, f_h_gr_get) (current_cpu, i))); flags[0] = GET_H_IBIT () != 0 ? 'I' : 'i'; flags[1] = GET_H_XBIT () != 0 ? 'X' : 'x'; flags[2] = GET_H_NBIT () != 0 ? 'N' : 'n'; flags[3] = GET_H_ZBIT () != 0 ? 'Z' : 'z'; flags[4] = GET_H_VBIT () != 0 ? 'V' : 'v'; flags[5] = GET_H_CBIT () != 0 ? 'C' : 'c'; flags[6] = 0; /* Emit ACR after flags and cycle count for this insn. */ if (BASENUM == 32) cris_trace_printf (sd, current_cpu, "%s %d %lx\n", flags, (int) ((CPU_CRIS_MISC_PROFILE (current_cpu) ->basic_cycle_count - CPU_CRIS_PREV_MISC_PROFILE (current_cpu) ->basic_cycle_count) + (CPU_CRIS_MISC_PROFILE (current_cpu) ->unaligned_mem_dword_count - CPU_CRIS_PREV_MISC_PROFILE (current_cpu) ->unaligned_mem_dword_count)), (unsigned long) (XCONCAT3(crisv,BASENUM, f_h_gr_get) (current_cpu, 15))); else cris_trace_printf (sd, current_cpu, "%s %d\n", flags, (int) ((CPU_CRIS_MISC_PROFILE (current_cpu) ->basic_cycle_count - CPU_CRIS_PREV_MISC_PROFILE (current_cpu) ->basic_cycle_count) + (CPU_CRIS_MISC_PROFILE (current_cpu) ->unaligned_mem_dword_count - CPU_CRIS_PREV_MISC_PROFILE (current_cpu) ->unaligned_mem_dword_count))); CPU_CRIS_PREV_MISC_PROFILE (current_cpu)[0] = CPU_CRIS_MISC_PROFILE (current_cpu)[0]; } } /* Record the cycles computed for an insn. LAST_P is non-zero if this is the last insn in a set of parallel insns, and we update the total cycle count. CYCLES is the cycle count of the insn. */ void MY (f_model_insn_after) (SIM_CPU *current_cpu, int last_p ATTRIBUTE_UNUSED, int cycles) { PROFILE_DATA *p = CPU_PROFILE_DATA (current_cpu); PROFILE_MODEL_TOTAL_CYCLES (p) += cycles; CPU_CRIS_MISC_PROFILE (current_cpu)->basic_cycle_count += cycles; PROFILE_MODEL_CUR_INSN_CYCLES (p) = cycles; } /* Initialize cycle counting for an insn. FIRST_P is non-zero if this is the first insn in a set of parallel insns. */ void MY (f_model_init_insn_cycles) (SIM_CPU *current_cpu ATTRIBUTE_UNUSED, int first_p ATTRIBUTE_UNUSED) { abort (); } /* Record the cycles computed for an insn. LAST_P is non-zero if this is the last insn in a set of parallel insns, and we update the total cycle count. */ void MY (f_model_update_insn_cycles) (SIM_CPU *current_cpu ATTRIBUTE_UNUSED, int last_p ATTRIBUTE_UNUSED) { abort (); } #if 0 void MY (f_model_record_cycles) (SIM_CPU *current_cpu, unsigned long cycles) { abort (); } void MY (f_model_mark_get_h_gr) (SIM_CPU *current_cpu, ARGBUF *abuf) { abort (); } void MY (f_model_mark_set_h_gr) (SIM_CPU *current_cpu, ARGBUF *abuf) { abort (); } #endif /* Create the context for a thread. */ void * MY (make_thread_cpu_data) (SIM_CPU *current_cpu, void *context) { void *info = xmalloc (current_cpu->thread_cpu_data_size); if (context != NULL) memcpy (info, context, current_cpu->thread_cpu_data_size); else memset (info, 0, current_cpu->thread_cpu_data_size),abort(); return info; } /* Hook function for per-cpu simulator initialization. */ void MY (f_specific_init) (SIM_CPU *current_cpu) { current_cpu->make_thread_cpu_data = MY (make_thread_cpu_data); current_cpu->thread_cpu_data_size = sizeof (current_cpu->cpu_data); } /* Model function for arbitrary single stall cycles. */ int MY (XCONCAT3 (f_model_crisv,BASENUM, _u_stall)) (SIM_CPU *current_cpu ATTRIBUTE_UNUSED, const IDESC *idesc, int unit_num, int referenced ATTRIBUTE_UNUSED) { return idesc->timing->units[unit_num].done; } #ifndef SPECIFIC_U_SKIP4_FN /* Model function for u-skip4 unit. */ int MY (XCONCAT3 (f_model_crisv,BASENUM, _u_skip4)) (SIM_CPU *current_cpu, const IDESC *idesc, int unit_num, int referenced ATTRIBUTE_UNUSED) { /* Handle PC not being updated with pbb. FIXME: What if not pbb? */ CPU (h_pc) += 4; return idesc->timing->units[unit_num].done; } #endif #ifndef SPECIFIC_U_EXEC_FN /* Model function for u-exec unit. */ int MY (XCONCAT3 (f_model_crisv,BASENUM, _u_exec)) (SIM_CPU *current_cpu, const IDESC *idesc, int unit_num, int referenced ATTRIBUTE_UNUSED) { /* Handle PC not being updated with pbb. FIXME: What if not pbb? */ CPU (h_pc) += 2; return idesc->timing->units[unit_num].done; } #endif #ifndef SPECIFIC_U_MEM_FN /* Model function for u-mem unit. */ int MY (XCONCAT3 (f_model_crisv,BASENUM, _u_mem)) (SIM_CPU *current_cpu ATTRIBUTE_UNUSED, const IDESC *idesc, int unit_num, int referenced ATTRIBUTE_UNUSED) { return idesc->timing->units[unit_num].done; } #endif #ifndef SPECIFIC_U_CONST16_FN /* Model function for u-const16 unit. */ int MY (XCONCAT3 (f_model_crisv,BASENUM, _u_const16)) (SIM_CPU *current_cpu, const IDESC *idesc, int unit_num, int referenced ATTRIBUTE_UNUSED) { CPU (h_pc) += 2; return idesc->timing->units[unit_num].done; } #endif /* SPECIFIC_U_CONST16_FN */ #ifndef SPECIFIC_U_CONST32_FN /* This will be incorrect for early models, where a dword always take two cycles. */ #define CRIS_MODEL_MASK_PC_STALL 2 /* Model function for u-const32 unit. */ int MY (XCONCAT3 (f_model_crisv,BASENUM, _u_const32)) (SIM_CPU *current_cpu, const IDESC *idesc, int unit_num, int referenced ATTRIBUTE_UNUSED) { int unaligned_extra = (((CPU (h_pc) + 2) & CRIS_MODEL_MASK_PC_STALL) == CRIS_MODEL_MASK_PC_STALL); /* Handle PC not being updated with pbb. FIXME: What if not pbb? */ CPU_CRIS_MISC_PROFILE (current_cpu)->unaligned_mem_dword_count += unaligned_extra; CPU (h_pc) += 4; return idesc->timing->units[unit_num].done; } #endif /* SPECIFIC_U_CONST32_FN */ #ifndef SPECIFIC_U_MOVEM_FN /* Model function for u-movem unit. */ int MY (XCONCAT3 (f_model_crisv,BASENUM, _u_movem)) (SIM_CPU *current_cpu ATTRIBUTE_UNUSED, const IDESC *idesc ATTRIBUTE_UNUSED, int unit_num ATTRIBUTE_UNUSED, int referenced ATTRIBUTE_UNUSED, INT limreg) { /* FIXME: Add cycles for misalignment. */ if (limreg == -1) abort (); /* We don't record movem move cycles in movemsrc_stall_count since those cycles have historically been handled as ordinary cycles. */ return limreg + 1; } #endif /* SPECIFIC_U_MOVEM_FN */ #endif /* WITH_PROFILE_MODEL_P */