diff options
Diffstat (limited to 'sim/m32r/m32r.c')
| -rw-r--r-- | sim/m32r/m32r.c | 521 |
1 files changed, 0 insertions, 521 deletions
diff --git a/sim/m32r/m32r.c b/sim/m32r/m32r.c deleted file mode 100644 index 3e5e4aaf7a8..00000000000 --- a/sim/m32r/m32r.c +++ /dev/null @@ -1,521 +0,0 @@ -/* m32r simulator support code - Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. - Contributed by Cygnus Support. - -This file is part of GDB, the GNU debugger. - -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. */ - -#define WANT_CPU m32rbf -#define WANT_CPU_M32RBF - -#include "sim-main.h" -#include "cgen-mem.h" -#include "cgen-ops.h" - -/* Decode gdb ctrl register number. */ - -int -m32r_decode_gdb_ctrl_regnum (int gdb_regnum) -{ - switch (gdb_regnum) - { - case PSW_REGNUM : return H_CR_PSW; - case CBR_REGNUM : return H_CR_CBR; - case SPI_REGNUM : return H_CR_SPI; - case SPU_REGNUM : return H_CR_SPU; - case BPC_REGNUM : return H_CR_BPC; - case BBPSW_REGNUM : return H_CR_BBPSW; - case BBPC_REGNUM : return H_CR_BBPC; - } - abort (); -} - -/* The contents of BUF are in target byte order. */ - -int -m32rbf_fetch_register (SIM_CPU *current_cpu, int rn, unsigned char *buf, int len) -{ - int mach = MACH_NUM (CPU_MACH (current_cpu)); - - if (rn < 16) - SETTWI (buf, a_m32r_h_gr_get (current_cpu, rn)); - else - switch (rn) - { - case PSW_REGNUM : - case CBR_REGNUM : - case SPI_REGNUM : - case SPU_REGNUM : - case BPC_REGNUM : - case BBPSW_REGNUM : - case BBPC_REGNUM : - SETTWI (buf, a_m32r_h_cr_get (current_cpu, - m32r_decode_gdb_ctrl_regnum (rn))); - break; - case PC_REGNUM : - if (mach == MACH_M32R) - SETTWI (buf, m32rbf_h_pc_get (current_cpu)); - else - SETTWI (buf, m32rxf_h_pc_get (current_cpu)); - break; - case ACCL_REGNUM : - if (mach == MACH_M32R) - SETTWI (buf, GETLODI (m32rbf_h_accum_get (current_cpu))); - else - SETTWI (buf, GETLODI (m32rxf_h_accum_get (current_cpu))); - break; - case ACCH_REGNUM : - if (mach == MACH_M32R) - SETTWI (buf, GETHIDI (m32rbf_h_accum_get (current_cpu))); - else - SETTWI (buf, GETHIDI (m32rxf_h_accum_get (current_cpu))); - break; - default : - return 0; - } - - return -1; /*FIXME*/ -} - -/* The contents of BUF are in target byte order. */ - -int -m32rbf_store_register (SIM_CPU *current_cpu, int rn, unsigned char *buf, int len) -{ - int mach = MACH_NUM (CPU_MACH (current_cpu)); - - if (rn < 16) - a_m32r_h_gr_set (current_cpu, rn, GETTWI (buf)); - else - switch (rn) - { - case PSW_REGNUM : - case CBR_REGNUM : - case SPI_REGNUM : - case SPU_REGNUM : - case BPC_REGNUM : - case BBPSW_REGNUM : - case BBPC_REGNUM : - a_m32r_h_cr_set (current_cpu, - m32r_decode_gdb_ctrl_regnum (rn), - GETTWI (buf)); - break; - case PC_REGNUM : - if (mach == MACH_M32R) - m32rbf_h_pc_set (current_cpu, GETTWI (buf)); - else - m32rxf_h_pc_set (current_cpu, GETTWI (buf)); - break; - case ACCL_REGNUM : - { - DI val; - if (mach == MACH_M32R) - val = m32rbf_h_accum_get (current_cpu); - else - val = m32rxf_h_accum_get (current_cpu); - SETLODI (val, GETTWI (buf)); - if (mach == MACH_M32R) - m32rbf_h_accum_set (current_cpu, val); - else - m32rxf_h_accum_set (current_cpu, val); - break; - } - case ACCH_REGNUM : - { - DI val; - if (mach == MACH_M32R) - val = m32rbf_h_accum_get (current_cpu); - else - val = m32rxf_h_accum_get (current_cpu); - SETHIDI (val, GETTWI (buf)); - if (mach == MACH_M32R) - m32rbf_h_accum_set (current_cpu, val); - else - m32rxf_h_accum_set (current_cpu, val); - break; - } - default : - return 0; - } - - return -1; /*FIXME*/ -} - -/* Cover fns for mach independent register accesses. */ - -SI -a_m32r_h_gr_get (SIM_CPU *current_cpu, UINT regno) -{ - switch (MACH_NUM (CPU_MACH (current_cpu))) - { -#ifdef HAVE_CPU_M32RBF - case MACH_M32R : - return m32rbf_h_gr_get (current_cpu, regno); -#endif -#ifdef HAVE_CPU_M32RXF - case MACH_M32RX : - return m32rxf_h_gr_get (current_cpu, regno); -#endif - default : - abort (); - } -} - -void -a_m32r_h_gr_set (SIM_CPU *current_cpu, UINT regno, SI newval) -{ - switch (MACH_NUM (CPU_MACH (current_cpu))) - { -#ifdef HAVE_CPU_M32RBF - case MACH_M32R : - m32rbf_h_gr_set (current_cpu, regno, newval); - break; -#endif -#ifdef HAVE_CPU_M32RXF - case MACH_M32RX : - m32rxf_h_gr_set (current_cpu, regno, newval); - break; -#endif - default : - abort (); - } -} - -USI -a_m32r_h_cr_get (SIM_CPU *current_cpu, UINT regno) -{ - switch (MACH_NUM (CPU_MACH (current_cpu))) - { -#ifdef HAVE_CPU_M32RBF - case MACH_M32R : - return m32rbf_h_cr_get (current_cpu, regno); -#endif -#ifdef HAVE_CPU_M32RXF - case MACH_M32RX : - return m32rxf_h_cr_get (current_cpu, regno); -#endif - default : - abort (); - } -} - -void -a_m32r_h_cr_set (SIM_CPU *current_cpu, UINT regno, USI newval) -{ - switch (MACH_NUM (CPU_MACH (current_cpu))) - { -#ifdef HAVE_CPU_M32RBF - case MACH_M32R : - m32rbf_h_cr_set (current_cpu, regno, newval); - break; -#endif -#ifdef HAVE_CPU_M32RXF - case MACH_M32RX : - m32rxf_h_cr_set (current_cpu, regno, newval); - break; -#endif - default : - abort (); - } -} - -USI -m32rbf_h_cr_get_handler (SIM_CPU *current_cpu, UINT cr) -{ - switch (cr) - { - case H_CR_PSW : /* psw */ - return (((CPU (h_bpsw) & 0xc1) << 8) - | ((CPU (h_psw) & 0xc0) << 0) - | GET_H_COND ()); - case H_CR_BBPSW : /* backup backup psw */ - return CPU (h_bbpsw) & 0xc1; - case H_CR_CBR : /* condition bit */ - return GET_H_COND (); - case H_CR_SPI : /* interrupt stack pointer */ - if (! GET_H_SM ()) - return CPU (h_gr[H_GR_SP]); - else - return CPU (h_cr[H_CR_SPI]); - case H_CR_SPU : /* user stack pointer */ - if (GET_H_SM ()) - return CPU (h_gr[H_GR_SP]); - else - return CPU (h_cr[H_CR_SPU]); - case H_CR_BPC : /* backup pc */ - return CPU (h_cr[H_CR_BPC]) & 0xfffffffe; - case H_CR_BBPC : /* backup backup pc */ - return CPU (h_cr[H_CR_BBPC]) & 0xfffffffe; - case 4 : /* ??? unspecified, but apparently available */ - case 5 : /* ??? unspecified, but apparently available */ - return CPU (h_cr[cr]); - default : - return 0; - } -} - -void -m32rbf_h_cr_set_handler (SIM_CPU *current_cpu, UINT cr, USI newval) -{ - switch (cr) - { - case H_CR_PSW : /* psw */ - { - int old_sm = (CPU (h_psw) & 0x80) != 0; - int new_sm = (newval & 0x80) != 0; - CPU (h_bpsw) = (newval >> 8) & 0xff; - CPU (h_psw) = newval & 0xff; - SET_H_COND (newval & 1); - /* When switching stack modes, update the registers. */ - if (old_sm != new_sm) - { - if (old_sm) - { - /* Switching user -> system. */ - CPU (h_cr[H_CR_SPU]) = CPU (h_gr[H_GR_SP]); - CPU (h_gr[H_GR_SP]) = CPU (h_cr[H_CR_SPI]); - } - else - { - /* Switching system -> user. */ - CPU (h_cr[H_CR_SPI]) = CPU (h_gr[H_GR_SP]); - CPU (h_gr[H_GR_SP]) = CPU (h_cr[H_CR_SPU]); - } - } - break; - } - case H_CR_BBPSW : /* backup backup psw */ - CPU (h_bbpsw) = newval & 0xff; - break; - case H_CR_CBR : /* condition bit */ - SET_H_COND (newval & 1); - break; - case H_CR_SPI : /* interrupt stack pointer */ - if (! GET_H_SM ()) - CPU (h_gr[H_GR_SP]) = newval; - else - CPU (h_cr[H_CR_SPI]) = newval; - break; - case H_CR_SPU : /* user stack pointer */ - if (GET_H_SM ()) - CPU (h_gr[H_GR_SP]) = newval; - else - CPU (h_cr[H_CR_SPU]) = newval; - break; - case H_CR_BPC : /* backup pc */ - CPU (h_cr[H_CR_BPC]) = newval; - break; - case H_CR_BBPC : /* backup backup pc */ - CPU (h_cr[H_CR_BBPC]) = newval; - break; - case 4 : /* ??? unspecified, but apparently available */ - case 5 : /* ??? unspecified, but apparently available */ - CPU (h_cr[cr]) = newval; - break; - default : - /* ignore */ - break; - } -} - -/* Cover fns to access h-psw. */ - -UQI -m32rbf_h_psw_get_handler (SIM_CPU *current_cpu) -{ - return (CPU (h_psw) & 0xfe) | (CPU (h_cond) & 1); -} - -void -m32rbf_h_psw_set_handler (SIM_CPU *current_cpu, UQI newval) -{ - CPU (h_psw) = newval; - CPU (h_cond) = newval & 1; -} - -/* Cover fns to access h-accum. */ - -DI -m32rbf_h_accum_get_handler (SIM_CPU *current_cpu) -{ - /* Sign extend the top 8 bits. */ - DI r; -#if 1 - r = ANDDI (CPU (h_accum), MAKEDI (0xffffff, 0xffffffff)); - r = XORDI (r, MAKEDI (0x800000, 0)); - r = SUBDI (r, MAKEDI (0x800000, 0)); -#else - SI hi,lo; - r = CPU (h_accum); - hi = GETHIDI (r); - lo = GETLODI (r); - hi = ((hi & 0xffffff) ^ 0x800000) - 0x800000; - r = MAKEDI (hi, lo); -#endif - return r; -} - -void -m32rbf_h_accum_set_handler (SIM_CPU *current_cpu, DI newval) -{ - CPU (h_accum) = newval; -} - -#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 -m32rbf_model_insn_before (SIM_CPU *cpu, int first_p) -{ - M32R_MISC_PROFILE *mp = CPU_M32R_MISC_PROFILE (cpu); - mp->cti_stall = 0; - mp->load_stall = 0; - if (first_p) - { - mp->load_regs_pending = 0; - mp->biggest_cycles = 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 -m32rbf_model_insn_after (SIM_CPU *cpu, int last_p, int cycles) -{ - PROFILE_DATA *p = CPU_PROFILE_DATA (cpu); - M32R_MISC_PROFILE *mp = CPU_M32R_MISC_PROFILE (cpu); - unsigned long total = cycles + mp->cti_stall + mp->load_stall; - - if (last_p) - { - unsigned long biggest = total > mp->biggest_cycles ? total : mp->biggest_cycles; - PROFILE_MODEL_TOTAL_CYCLES (p) += biggest; - PROFILE_MODEL_CUR_INSN_CYCLES (p) = total; - } - else - { - /* Here we take advantage of the fact that !last_p -> first_p. */ - mp->biggest_cycles = total; - PROFILE_MODEL_CUR_INSN_CYCLES (p) = total; - } - - /* Branch and load stall counts are recorded independently of the - total cycle count. */ - PROFILE_MODEL_CTI_STALL_CYCLES (p) += mp->cti_stall; - PROFILE_MODEL_LOAD_STALL_CYCLES (p) += mp->load_stall; - - mp->load_regs = mp->load_regs_pending; -} - -static INLINE void -check_load_stall (SIM_CPU *cpu, int regno) -{ - UINT h_gr = CPU_M32R_MISC_PROFILE (cpu)->load_regs; - - if (regno != -1 - && (h_gr & (1 << regno)) != 0) - { - CPU_M32R_MISC_PROFILE (cpu)->load_stall += 2; - if (TRACE_INSN_P (cpu)) - cgen_trace_printf (cpu, " ; Load stall of 2 cycles."); - } -} - -int -m32rbf_model_m32r_d_u_exec (SIM_CPU *cpu, const IDESC *idesc, - int unit_num, int referenced, - INT sr, INT sr2, INT dr) -{ - check_load_stall (cpu, sr); - check_load_stall (cpu, sr2); - return idesc->timing->units[unit_num].done; -} - -int -m32rbf_model_m32r_d_u_cmp (SIM_CPU *cpu, const IDESC *idesc, - int unit_num, int referenced, - INT src1, INT src2) -{ - check_load_stall (cpu, src1); - check_load_stall (cpu, src2); - return idesc->timing->units[unit_num].done; -} - -int -m32rbf_model_m32r_d_u_mac (SIM_CPU *cpu, const IDESC *idesc, - int unit_num, int referenced, - INT src1, INT src2) -{ - check_load_stall (cpu, src1); - check_load_stall (cpu, src2); - return idesc->timing->units[unit_num].done; -} - -int -m32rbf_model_m32r_d_u_cti (SIM_CPU *cpu, const IDESC *idesc, - int unit_num, int referenced, - INT sr) -{ - PROFILE_DATA *profile = CPU_PROFILE_DATA (cpu); - int taken_p = (referenced & (1 << 1)) != 0; - - check_load_stall (cpu, sr); - if (taken_p) - { - CPU_M32R_MISC_PROFILE (cpu)->cti_stall += 2; - PROFILE_MODEL_TAKEN_COUNT (profile) += 1; - } - else - PROFILE_MODEL_UNTAKEN_COUNT (profile) += 1; - return idesc->timing->units[unit_num].done; -} - -int -m32rbf_model_m32r_d_u_load (SIM_CPU *cpu, const IDESC *idesc, - int unit_num, int referenced, - INT sr, INT dr) -{ - CPU_M32R_MISC_PROFILE (cpu)->load_regs_pending |= (1 << dr); - check_load_stall (cpu, sr); - return idesc->timing->units[unit_num].done; -} - -int -m32rbf_model_m32r_d_u_store (SIM_CPU *cpu, const IDESC *idesc, - int unit_num, int referenced, - INT src1, INT src2) -{ - check_load_stall (cpu, src1); - check_load_stall (cpu, src2); - return idesc->timing->units[unit_num].done; -} - -int -m32rbf_model_test_u_exec (SIM_CPU *cpu, const IDESC *idesc, - int unit_num, int referenced) -{ - return idesc->timing->units[unit_num].done; -} - -#endif /* WITH_PROFILE_MODEL_P */ |