OpenCores
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  • This comparison shows the changes necessary to convert path
    /openrisc/trunk/gnu-old/gdb-6.8/sim/mcore
    from Rev 816 to Rev 827
    Reverse comparison

Rev 816 → Rev 827

/configure File deleted
configure Property changes : Deleted: svn:executable ## -1 +0,0 ## -* \ No newline at end of property Index: Makefile.in =================================================================== --- Makefile.in (revision 816) +++ Makefile.in (nonexistent) @@ -1,29 +0,0 @@ -# Makefile template for Configure for the MCore sim library. -# Copyright (C) 1990, 91, 92, 95, 96, 19, 1999, 2007, 2008 -# Free Software Foundation, Inc. -# Written by Cygnus Solutions. -# -# 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 3 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, see . - -## COMMON_PRE_CONFIG_FRAG - -SIM_OBJS = interp.o sim-load.o -SIM_EXTRA_LIBS = -lm -SIM_EXTRA_CLEAN = mcore-clean - -## COMMON_POST_CONFIG_FRAG - -interp.o: interp.c - -mcore-clean: Index: interp.c =================================================================== --- interp.c (revision 816) +++ interp.c (nonexistent) @@ -1,2216 +0,0 @@ -/* Simulator for Motorola's MCore processor - Copyright (C) 1999, 2000, 2002, 2003, 2007, 2008 - Free Software Foundation, Inc. - Contributed by Cygnus Solutions. - -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 3 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, see . */ - -#include -#include "sysdep.h" -#include -#include -#include /* for byte ordering macros */ -#include "bfd.h" -#include "gdb/callback.h" -#include "libiberty.h" -#include "gdb/remote-sim.h" - -#ifndef NUM_ELEM -#define NUM_ELEM(A) (sizeof (A) / sizeof (A)[0]) -#endif - - -typedef long int word; -typedef unsigned long int uword; - -static int target_big_endian = 0; -static unsigned long heap_ptr = 0; -host_callback * callback; - - -unsigned long -mcore_extract_unsigned_integer (addr, len) - unsigned char * addr; - int len; -{ - unsigned long retval; - unsigned char * p; - unsigned char * startaddr = (unsigned char *)addr; - unsigned char * endaddr = startaddr + len; - - if (len > (int) sizeof (unsigned long)) - printf ("That operation is not available on integers of more than %d bytes.", - sizeof (unsigned long)); - - /* Start at the most significant end of the integer, and work towards - the least significant. */ - retval = 0; - - if (! target_big_endian) - { - for (p = endaddr; p > startaddr;) - retval = (retval << 8) | * -- p; - } - else - { - for (p = startaddr; p < endaddr;) - retval = (retval << 8) | * p ++; - } - - return retval; -} - -void -mcore_store_unsigned_integer (addr, len, val) - unsigned char * addr; - int len; - unsigned long val; -{ - unsigned char * p; - unsigned char * startaddr = (unsigned char *)addr; - unsigned char * endaddr = startaddr + len; - - if (! target_big_endian) - { - for (p = startaddr; p < endaddr;) - { - * p ++ = val & 0xff; - val >>= 8; - } - } - else - { - for (p = endaddr; p > startaddr;) - { - * -- p = val & 0xff; - val >>= 8; - } - } -} - -/* The machine state. - This state is maintained in host byte order. The - fetch/store register functions must translate between host - byte order and the target processor byte order. - Keeping this data in target byte order simplifies the register - read/write functions. Keeping this data in native order improves - the performance of the simulator. Simulation speed is deemed more - important. */ - -/* The ordering of the mcore_regset structure is matched in the - gdb/config/mcore/tm-mcore.h file in the REGISTER_NAMES macro. */ -struct mcore_regset -{ - word gregs [16]; /* primary registers */ - word alt_gregs [16]; /* alt register file */ - word cregs [32]; /* control registers */ - word pc; /* the pc */ - int ticks; - int stalls; - int cycles; - int insts; - int exception; - unsigned long msize; - unsigned char * memory; - word * active_gregs; -}; - -union -{ - struct mcore_regset asregs; - word asints [1]; /* but accessed larger... */ -} cpu; - -#define LAST_VALID_CREG 32 /* only 0..12 implemented */ -#define NUM_MCORE_REGS (16 + 16 + LAST_VALID_CREG + 1) - -int memcycles = 1; - -static SIM_OPEN_KIND sim_kind; -static char * myname; - -static int issue_messages = 0; - -#define gr asregs.active_gregs -#define cr asregs.cregs -#define sr asregs.cregs[0] -#define vbr asregs.cregs[1] -#define esr asregs.cregs[2] -#define fsr asregs.cregs[3] -#define epc asregs.cregs[4] -#define fpc asregs.cregs[5] -#define ss0 asregs.cregs[6] -#define ss1 asregs.cregs[7] -#define ss2 asregs.cregs[8] -#define ss3 asregs.cregs[9] -#define ss4 asregs.cregs[10] -#define gcr asregs.cregs[11] -#define gsr asregs.cregs[12] -#define mem asregs.memory - -/* maniuplate the carry bit */ -#define C_ON() (cpu.sr & 1) -#define C_VALUE() (cpu.sr & 1) -#define C_OFF() ((cpu.sr & 1) == 0) -#define SET_C() {cpu.sr |= 1;} -#define CLR_C() {cpu.sr &= 0xfffffffe;} -#define NEW_C(v) {CLR_C(); cpu.sr |= ((v) & 1);} - -#define SR_AF() ((cpu.sr >> 1) & 1) - -#define TRAPCODE 1 /* r1 holds which function we want */ -#define PARM1 2 /* first parameter */ -#define PARM2 3 -#define PARM3 4 -#define PARM4 5 -#define RET1 2 /* register for return values. */ - -long -int_sbrk (inc_bytes) - int inc_bytes; -{ - long addr; - - addr = heap_ptr; - - heap_ptr += inc_bytes; - - if (issue_messages && heap_ptr>cpu.gr[0]) - fprintf (stderr, "Warning: heap_ptr overlaps stack!\n"); - - return addr; -} - -static void INLINE -wbat (x, v) - word x, v; -{ - if (((uword)x) >= cpu.asregs.msize) - { - if (issue_messages) - fprintf (stderr, "byte write to 0x%x outside memory range\n", x); - - cpu.asregs.exception = SIGSEGV; - } - else - { - unsigned char *p = cpu.mem + x; - p[0] = v; - } -} - -static void INLINE -wlat (x, v) - word x, v; -{ - if (((uword)x) >= cpu.asregs.msize) - { - if (issue_messages) - fprintf (stderr, "word write to 0x%x outside memory range\n", x); - - cpu.asregs.exception = SIGSEGV; - } - else - { - if ((x & 3) != 0) - { - if (issue_messages) - fprintf (stderr, "word write to unaligned memory address: 0x%x\n", x); - - cpu.asregs.exception = SIGBUS; - } - else if (! target_big_endian) - { - unsigned char * p = cpu.mem + x; - p[3] = v >> 24; - p[2] = v >> 16; - p[1] = v >> 8; - p[0] = v; - } - else - { - unsigned char * p = cpu.mem + x; - p[0] = v >> 24; - p[1] = v >> 16; - p[2] = v >> 8; - p[3] = v; - } - } -} - -static void INLINE -what (x, v) - word x, v; -{ - if (((uword)x) >= cpu.asregs.msize) - { - if (issue_messages) - fprintf (stderr, "short write to 0x%x outside memory range\n", x); - - cpu.asregs.exception = SIGSEGV; - } - else - { - if ((x & 1) != 0) - { - if (issue_messages) - fprintf (stderr, "short write to unaligned memory address: 0x%x\n", - x); - - cpu.asregs.exception = SIGBUS; - } - else if (! target_big_endian) - { - unsigned char * p = cpu.mem + x; - p[1] = v >> 8; - p[0] = v; - } - else - { - unsigned char * p = cpu.mem + x; - p[0] = v >> 8; - p[1] = v; - } - } -} - -/* Read functions. */ -static int INLINE -rbat (x) - word x; -{ - if (((uword)x) >= cpu.asregs.msize) - { - if (issue_messages) - fprintf (stderr, "byte read from 0x%x outside memory range\n", x); - - cpu.asregs.exception = SIGSEGV; - return 0; - } - else - { - unsigned char * p = cpu.mem + x; - return p[0]; - } -} - -static int INLINE -rlat (x) - word x; -{ - if (((uword) x) >= cpu.asregs.msize) - { - if (issue_messages) - fprintf (stderr, "word read from 0x%x outside memory range\n", x); - - cpu.asregs.exception = SIGSEGV; - return 0; - } - else - { - if ((x & 3) != 0) - { - if (issue_messages) - fprintf (stderr, "word read from unaligned address: 0x%x\n", x); - - cpu.asregs.exception = SIGBUS; - return 0; - } - else if (! target_big_endian) - { - unsigned char * p = cpu.mem + x; - return (p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0]; - } - else - { - unsigned char * p = cpu.mem + x; - return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]; - } - } -} - -static int INLINE -rhat (x) - word x; -{ - if (((uword)x) >= cpu.asregs.msize) - { - if (issue_messages) - fprintf (stderr, "short read from 0x%x outside memory range\n", x); - - cpu.asregs.exception = SIGSEGV; - return 0; - } - else - { - if ((x & 1) != 0) - { - if (issue_messages) - fprintf (stderr, "short read from unaligned address: 0x%x\n", x); - - cpu.asregs.exception = SIGBUS; - return 0; - } - else if (! target_big_endian) - { - unsigned char * p = cpu.mem + x; - return (p[1] << 8) | p[0]; - } - else - { - unsigned char * p = cpu.mem + x; - return (p[0] << 8) | p[1]; - } - } -} - - -#define SEXTB(x) (((x & 0xff) ^ (~ 0x7f)) + 0x80) -#define SEXTW(y) ((int)((short)y)) - -static int -IOMEM (addr, write, value) - int addr; - int write; - int value; -{ -} - -/* Default to a 8 Mbyte (== 2^23) memory space. */ -static int sim_memory_size = 23; - -#define MEM_SIZE_FLOOR 64 -void -sim_size (power) - int power; -{ - sim_memory_size = power; - cpu.asregs.msize = 1 << sim_memory_size; - - if (cpu.mem) - free (cpu.mem); - - /* Watch out for the '0 count' problem. There's probably a better - way.. e.g., why do we use 64 here? */ - if (cpu.asregs.msize < 64) /* Ensure a boundary. */ - cpu.mem = (unsigned char *) calloc (64, (64 + cpu.asregs.msize) / 64); - else - cpu.mem = (unsigned char *) calloc (64, cpu.asregs.msize / 64); - - if (!cpu.mem) - { - if (issue_messages) - fprintf (stderr, - "Not enough VM for simulation of %d bytes of RAM\n", - cpu.asregs.msize); - - cpu.asregs.msize = 1; - cpu.mem = (unsigned char *) calloc (1, 1); - } -} - -static void -init_pointers () -{ - if (cpu.asregs.msize != (1 << sim_memory_size)) - sim_size (sim_memory_size); -} - -static void -set_initial_gprs () -{ - int i; - long space; - unsigned long memsize; - - init_pointers (); - - /* Set up machine just out of reset. */ - cpu.asregs.pc = 0; - cpu.sr = 0; - - memsize = cpu.asregs.msize / (1024 * 1024); - - if (issue_messages > 1) - fprintf (stderr, "Simulated memory of %d Mbytes (0x0 .. 0x%08x)\n", - memsize, cpu.asregs.msize - 1); - - /* Clean out the GPRs and alternate GPRs. */ - for (i = 0; i < 16; i++) - { - cpu.asregs.gregs[i] = 0; - cpu.asregs.alt_gregs[i] = 0; - } - - /* Make our register set point to the right place. */ - if (SR_AF()) - cpu.asregs.active_gregs = &cpu.asregs.alt_gregs[0]; - else - cpu.asregs.active_gregs = &cpu.asregs.gregs[0]; - - /* ABI specifies initial values for these registers. */ - cpu.gr[0] = cpu.asregs.msize - 4; - - /* dac fix, the stack address must be 8-byte aligned! */ - cpu.gr[0] = cpu.gr[0] - cpu.gr[0] % 8; - cpu.gr[PARM1] = 0; - cpu.gr[PARM2] = 0; - cpu.gr[PARM3] = 0; - cpu.gr[PARM4] = cpu.gr[0]; -} - -static void -interrupt () -{ - cpu.asregs.exception = SIGINT; -} - -/* Functions so that trapped open/close don't interfere with the - parent's functions. We say that we can't close the descriptors - that we didn't open. exit() and cleanup() get in trouble here, - to some extent. That's the price of emulation. */ - -unsigned char opened[100]; - -static void -log_open (fd) - int fd; -{ - if (fd < 0 || fd > NUM_ELEM (opened)) - return; - - opened[fd] = 1; -} - -static void -log_close (fd) - int fd; -{ - if (fd < 0 || fd > NUM_ELEM (opened)) - return; - - opened[fd] = 0; -} - -static int -is_opened (fd) - int fd; -{ - if (fd < 0 || fd > NUM_ELEM (opened)) - return 0; - - return opened[fd]; -} - -static void -handle_trap1 () -{ - unsigned long a[3]; - - switch ((unsigned long) (cpu.gr [TRAPCODE])) - { - case 3: - a[0] = (unsigned long) (cpu.gr[PARM1]); - a[1] = (unsigned long) (cpu.mem + cpu.gr[PARM2]); - a[2] = (unsigned long) (cpu.gr[PARM3]); - cpu.gr[RET1] = callback->read (callback, a[0], (char *) a[1], a[2]); - break; - - case 4: - a[0] = (unsigned long) (cpu.gr[PARM1]); - a[1] = (unsigned long) (cpu.mem + cpu.gr[PARM2]); - a[2] = (unsigned long) (cpu.gr[PARM3]); - cpu.gr[RET1] = (int)callback->write (callback, a[0], (char *) a[1], a[2]); - break; - - case 5: - a[0] = (unsigned long) (cpu.mem + cpu.gr[PARM1]); - a[1] = (unsigned long) (cpu.gr[PARM2]); - /* a[2] = (unsigned long) (cpu.gr[PARM3]); */ - cpu.gr[RET1] = callback->open (callback, (char *) a[0], a[1]); - log_open (cpu.gr[RET1]); - break; - - case 6: - a[0] = (unsigned long) (cpu.gr[PARM1]); - /* Watch out for debugger's files. */ - if (is_opened (a[0])) - { - log_close (a[0]); - cpu.gr[RET1] = callback->close (callback, a[0]); - } - else - { - /* Don't let him close it. */ - cpu.gr[RET1] = (-1); - } - break; - - case 9: - a[0] = (unsigned long) (cpu.mem + cpu.gr[PARM1]); - a[1] = (unsigned long) (cpu.mem + cpu.gr[PARM2]); - cpu.gr[RET1] = link ((char *) a[0], (char *) a[1]); - break; - - case 10: - a[0] = (unsigned long) (cpu.mem + cpu.gr[PARM1]); - cpu.gr[RET1] = callback->unlink (callback, (char *) a[0]); - break; - - case 13: - /* handle time(0) vs time(&var) */ - a[0] = (unsigned long) (cpu.gr[PARM1]); - if (a[0]) - a[0] += (unsigned long) cpu.mem; - cpu.gr[RET1] = callback->time (callback, (time_t *) a[0]); - break; - - case 19: - a[0] = (unsigned long) (cpu.gr[PARM1]); - a[1] = (unsigned long) (cpu.gr[PARM2]); - a[2] = (unsigned long) (cpu.gr[PARM3]); - cpu.gr[RET1] = callback->lseek (callback, a[0], a[1], a[2]); - break; - - case 33: - a[0] = (unsigned long) (cpu.mem + cpu.gr[PARM1]); - a[1] = (unsigned long) (cpu.gr[PARM2]); - cpu.gr[RET1] = access ((char *) a[0], a[1]); - break; - - case 43: - a[0] = (unsigned long) (cpu.mem + cpu.gr[PARM1]); -#if 0 - cpu.gr[RET1] = times ((char *)a[0]); -#else - { - /* Give him simulated cycles for utime - and an instruction count for stime. */ - struct tms - { - time_t tms_utime; - time_t tms_stime; - time_t tms_cutime; - time_t tms_cstime; - } t; - - t.tms_utime = cpu.asregs.cycles; - t.tms_stime = cpu.asregs.insts; - t.tms_cutime = t.tms_utime; - t.tms_cstime = t.tms_stime; - - memcpy ((struct tms *)(a[0]), &t, sizeof (t)); - - cpu.gr[RET1] = cpu.asregs.cycles; - } -#endif - break; - - case 69: - a[0] = (unsigned long) (cpu.gr[PARM1]); - cpu.gr[RET1] = int_sbrk (a[0]); - break; - - default: - if (issue_messages) - fprintf (stderr, "WARNING: sys call %d unimplemented\n", - cpu.gr[TRAPCODE]); - break; - } -} - -static void -process_stub (what) - int what; -{ - /* These values should match those in libgloss/mcore/syscalls.s. */ - switch (what) - { - case 3: /* _read */ - case 4: /* _write */ - case 5: /* _open */ - case 6: /* _close */ - case 10: /* _unlink */ - case 19: /* _lseek */ - case 43: /* _times */ - cpu.gr [TRAPCODE] = what; - handle_trap1 (); - break; - - default: - if (issue_messages) - fprintf (stderr, "Unhandled stub opcode: %d\n", what); - break; - } -} - -static void -util (what) - unsigned what; -{ - switch (what) - { - case 0: /* exit */ - cpu.asregs.exception = SIGQUIT; - break; - - case 1: /* printf */ - { - unsigned long a[6]; - unsigned char *s; - int i; - - a[0] = (unsigned long)(cpu.mem + cpu.gr[PARM1]); - - for (s = (unsigned char *)a[0], i = 1 ; *s && i < 6 ; s++) - { - if (*s == '%') - { - if (*++s == 's') - a[i] = (unsigned long)(cpu.mem + cpu.gr[PARM1+i]); - else - a[i] = cpu.gr[i+PARM1]; - i++; - } - } - - cpu.gr[RET1] = printf ((char *)a[0], a[1], a[2], a[3], a[4], a[5]); - } - break; - - case 2: /* scanf */ - if (issue_messages) - fprintf (stderr, "WARNING: scanf unimplemented\n"); - break; - - case 3: /* utime */ - cpu.gr[RET1] = cpu.asregs.insts; - break; - - case 0xFF: - process_stub (cpu.gr[1]); - break; - - default: - if (issue_messages) - fprintf (stderr, "Unhandled util code: %x\n", what); - break; - } -} - -/* For figuring out whether we carried; addc/subc use this. */ -static int -iu_carry (a, b, cin) - unsigned long a; - unsigned long b; - int cin; -{ - unsigned long x; - - x = (a & 0xffff) + (b & 0xffff) + cin; - x = (x >> 16) + (a >> 16) + (b >> 16); - x >>= 16; - - return (x != 0); -} - -#define WATCHFUNCTIONS 1 -#ifdef WATCHFUNCTIONS - -#define MAXWL 80 -word WL[MAXWL]; -char * WLstr[MAXWL]; - -int ENDWL=0; -int WLincyc; -int WLcyc[MAXWL]; -int WLcnts[MAXWL]; -int WLmax[MAXWL]; -int WLmin[MAXWL]; -word WLendpc; -int WLbcyc; -int WLW; -#endif - -#define RD (inst & 0xF) -#define RS ((inst >> 4) & 0xF) -#define RX ((inst >> 8) & 0xF) -#define IMM5 ((inst >> 4) & 0x1F) -#define IMM4 ((inst) & 0xF) - -static int tracing = 0; - -void -sim_resume (sd, step, siggnal) - SIM_DESC sd; - int step, siggnal; -{ - int needfetch; - word ibuf; - word pc; - unsigned short inst; - void (* sigsave)(); - int memops; - int bonus_cycles; - int insts; - int w; - int cycs; - word WLhash; - - sigsave = signal (SIGINT, interrupt); - cpu.asregs.exception = step ? SIGTRAP: 0; - pc = cpu.asregs.pc; - - /* Fetch the initial instructions that we'll decode. */ - ibuf = rlat (pc & 0xFFFFFFFC); - needfetch = 0; - - memops = 0; - bonus_cycles = 0; - insts = 0; - - /* make our register set point to the right place */ - if (SR_AF ()) - cpu.asregs.active_gregs = & cpu.asregs.alt_gregs[0]; - else - cpu.asregs.active_gregs = & cpu.asregs.gregs[0]; - - /* make a hash to speed exec loop, hope it's nonzero */ - WLhash = 0xFFFFFFFF; - - for (w = 1; w <= ENDWL; w++) - WLhash = WLhash & WL[w]; - - do - { - word oldpc; - - insts ++; - - if (pc & 02) - { - if (! target_big_endian) - inst = ibuf >> 16; - else - inst = ibuf & 0xFFFF; - needfetch = 1; - } - else - { - if (! target_big_endian) - inst = ibuf & 0xFFFF; - else - inst = ibuf >> 16; - } - -#ifdef WATCHFUNCTIONS - /* now scan list of watch addresses, if match, count it and - note return address and count cycles until pc=return address */ - - if ((WLincyc == 1) && (pc == WLendpc)) - { - cycs = (cpu.asregs.cycles + (insts + bonus_cycles + - (memops * memcycles)) - WLbcyc); - - if (WLcnts[WLW] == 1) - { - WLmax[WLW] = cycs; - WLmin[WLW] = cycs; - WLcyc[WLW] = 0; - } - - if (cycs > WLmax[WLW]) - { - WLmax[WLW] = cycs; - } - - if (cycs < WLmin[WLW]) - { - WLmin[WLW] = cycs; - } - - WLcyc[WLW] += cycs; - WLincyc = 0; - WLendpc = 0; - } - - /* Optimize with a hash to speed loop. */ - if (WLincyc == 0) - { - if ((WLhash == 0) || ((WLhash & pc) != 0)) - { - for (w=1; w <= ENDWL; w++) - { - if (pc == WL[w]) - { - WLcnts[w]++; - WLbcyc = cpu.asregs.cycles + insts - + bonus_cycles + (memops * memcycles); - WLendpc = cpu.gr[15]; - WLincyc = 1; - WLW = w; - break; - } - } - } - } -#endif - - if (tracing) - fprintf (stderr, "%.4x: inst = %.4x ", pc, inst); - - oldpc = pc; - - pc += 2; - - switch (inst >> 8) - { - case 0x00: - switch RS - { - case 0x0: - switch RD - { - case 0x0: /* bkpt */ - cpu.asregs.exception = SIGTRAP; - pc -= 2; - break; - - case 0x1: /* sync */ - break; - - case 0x2: /* rte */ - pc = cpu.epc; - cpu.sr = cpu.esr; - needfetch = 1; - - if (SR_AF ()) - cpu.asregs.active_gregs = & cpu.asregs.alt_gregs[0]; - else - cpu.asregs.active_gregs = & cpu.asregs.gregs[0]; - break; - - case 0x3: /* rfi */ - pc = cpu.fpc; - cpu.sr = cpu.fsr; - needfetch = 1; - - if (SR_AF ()) - cpu.asregs.active_gregs = &cpu.asregs.alt_gregs[0]; - else - cpu.asregs.active_gregs = &cpu.asregs.gregs[0]; - break; - - case 0x4: /* stop */ - if (issue_messages) - fprintf (stderr, "WARNING: stop unimplemented\n"); - break; - - case 0x5: /* wait */ - if (issue_messages) - fprintf (stderr, "WARNING: wait unimplemented\n"); - break; - - case 0x6: /* doze */ - if (issue_messages) - fprintf (stderr, "WARNING: doze unimplemented\n"); - break; - - case 0x7: - cpu.asregs.exception = SIGILL; /* illegal */ - break; - - case 0x8: /* trap 0 */ - case 0xA: /* trap 2 */ - case 0xB: /* trap 3 */ - cpu.asregs.exception = SIGTRAP; - break; - - case 0xC: /* trap 4 */ - case 0xD: /* trap 5 */ - case 0xE: /* trap 6 */ - cpu.asregs.exception = SIGILL; /* illegal */ - break; - - case 0xF: /* trap 7 */ - cpu.asregs.exception = SIGTRAP; /* integer div-by-0 */ - break; - - case 0x9: /* trap 1 */ - handle_trap1 (); - break; - } - break; - - case 0x1: - cpu.asregs.exception = SIGILL; /* illegal */ - break; - - case 0x2: /* mvc */ - cpu.gr[RD] = C_VALUE(); - break; - case 0x3: /* mvcv */ - cpu.gr[RD] = C_OFF(); - break; - case 0x4: /* ldq */ - { - char *addr = (char *)cpu.gr[RD]; - int regno = 4; /* always r4-r7 */ - - bonus_cycles++; - memops += 4; - do - { - cpu.gr[regno] = rlat(addr); - addr += 4; - regno++; - } - while ((regno&0x3) != 0); - } - break; - case 0x5: /* stq */ - { - char *addr = (char *)cpu.gr[RD]; - int regno = 4; /* always r4-r7 */ - - memops += 4; - bonus_cycles++; - do - { - wlat(addr, cpu.gr[regno]); - addr += 4; - regno++; - } - while ((regno & 0x3) != 0); - } - break; - case 0x6: /* ldm */ - { - char *addr = (char *)cpu.gr[0]; - int regno = RD; - - /* bonus cycle is really only needed if - the next insn shifts the last reg loaded. - - bonus_cycles++; - */ - memops += 16-regno; - while (regno <= 0xF) - { - cpu.gr[regno] = rlat(addr); - addr += 4; - regno++; - } - } - break; - case 0x7: /* stm */ - { - char *addr = (char *)cpu.gr[0]; - int regno = RD; - - /* this should be removed! */ - /* bonus_cycles ++; */ - - memops += 16 - regno; - while (regno <= 0xF) - { - wlat(addr, cpu.gr[regno]); - addr += 4; - regno++; - } - } - break; - - case 0x8: /* dect */ - cpu.gr[RD] -= C_VALUE(); - break; - case 0x9: /* decf */ - cpu.gr[RD] -= C_OFF(); - break; - case 0xA: /* inct */ - cpu.gr[RD] += C_VALUE(); - break; - case 0xB: /* incf */ - cpu.gr[RD] += C_OFF(); - break; - case 0xC: /* jmp */ - pc = cpu.gr[RD]; - if (tracing && RD == 15) - fprintf (stderr, "Func return, r2 = %x, r3 = %x\n", - cpu.gr[2], cpu.gr[3]); - bonus_cycles++; - needfetch = 1; - break; - case 0xD: /* jsr */ - cpu.gr[15] = pc; - pc = cpu.gr[RD]; - bonus_cycles++; - needfetch = 1; - break; - case 0xE: /* ff1 */ - { - word tmp, i; - tmp = cpu.gr[RD]; - for (i = 0; !(tmp & 0x80000000) && i < 32; i++) - tmp <<= 1; - cpu.gr[RD] = i; - } - break; - case 0xF: /* brev */ - { - word tmp; - tmp = cpu.gr[RD]; - tmp = ((tmp & 0xaaaaaaaa) >> 1) | ((tmp & 0x55555555) << 1); - tmp = ((tmp & 0xcccccccc) >> 2) | ((tmp & 0x33333333) << 2); - tmp = ((tmp & 0xf0f0f0f0) >> 4) | ((tmp & 0x0f0f0f0f) << 4); - tmp = ((tmp & 0xff00ff00) >> 8) | ((tmp & 0x00ff00ff) << 8); - cpu.gr[RD] = ((tmp & 0xffff0000) >> 16) | ((tmp & 0x0000ffff) << 16); - } - break; - } - break; - case 0x01: - switch RS - { - case 0x0: /* xtrb3 */ - cpu.gr[1] = (cpu.gr[RD]) & 0xFF; - NEW_C (cpu.gr[RD] != 0); - break; - case 0x1: /* xtrb2 */ - cpu.gr[1] = (cpu.gr[RD]>>8) & 0xFF; - NEW_C (cpu.gr[RD] != 0); - break; - case 0x2: /* xtrb1 */ - cpu.gr[1] = (cpu.gr[RD]>>16) & 0xFF; - NEW_C (cpu.gr[RD] != 0); - break; - case 0x3: /* xtrb0 */ - cpu.gr[1] = (cpu.gr[RD]>>24) & 0xFF; - NEW_C (cpu.gr[RD] != 0); - break; - case 0x4: /* zextb */ - cpu.gr[RD] &= 0x000000FF; - break; - case 0x5: /* sextb */ - { - long tmp; - tmp = cpu.gr[RD]; - tmp <<= 24; - tmp >>= 24; - cpu.gr[RD] = tmp; - } - break; - case 0x6: /* zexth */ - cpu.gr[RD] &= 0x0000FFFF; - break; - case 0x7: /* sexth */ - { - long tmp; - tmp = cpu.gr[RD]; - tmp <<= 16; - tmp >>= 16; - cpu.gr[RD] = tmp; - } - break; - case 0x8: /* declt */ - --cpu.gr[RD]; - NEW_C ((long)cpu.gr[RD] < 0); - break; - case 0x9: /* tstnbz */ - { - word tmp = cpu.gr[RD]; - NEW_C ((tmp & 0xFF000000) != 0 && - (tmp & 0x00FF0000) != 0 && (tmp & 0x0000FF00) != 0 && - (tmp & 0x000000FF) != 0); - } - break; - case 0xA: /* decgt */ - --cpu.gr[RD]; - NEW_C ((long)cpu.gr[RD] > 0); - break; - case 0xB: /* decne */ - --cpu.gr[RD]; - NEW_C ((long)cpu.gr[RD] != 0); - break; - case 0xC: /* clrt */ - if (C_ON()) - cpu.gr[RD] = 0; - break; - case 0xD: /* clrf */ - if (C_OFF()) - cpu.gr[RD] = 0; - break; - case 0xE: /* abs */ - if (cpu.gr[RD] & 0x80000000) - cpu.gr[RD] = ~cpu.gr[RD] + 1; - break; - case 0xF: /* not */ - cpu.gr[RD] = ~cpu.gr[RD]; - break; - } - break; - case 0x02: /* movt */ - if (C_ON()) - cpu.gr[RD] = cpu.gr[RS]; - break; - case 0x03: /* mult */ - /* consume 2 bits per cycle from rs, until rs is 0 */ - { - unsigned int t = cpu.gr[RS]; - int ticks; - for (ticks = 0; t != 0 ; t >>= 2) - ticks++; - bonus_cycles += ticks; - } - bonus_cycles += 2; /* min. is 3, so add 2, plus ticks above */ - if (tracing) - fprintf (stderr, " mult %x by %x to give %x", - cpu.gr[RD], cpu.gr[RS], cpu.gr[RD] * cpu.gr[RS]); - cpu.gr[RD] = cpu.gr[RD] * cpu.gr[RS]; - break; - case 0x04: /* loopt */ - if (C_ON()) - { - pc += (IMM4 << 1) - 32; - bonus_cycles ++; - needfetch = 1; - } - --cpu.gr[RS]; /* not RD! */ - NEW_C (((long)cpu.gr[RS]) > 0); - break; - case 0x05: /* subu */ - cpu.gr[RD] -= cpu.gr[RS]; - break; - case 0x06: /* addc */ - { - unsigned long tmp, a, b; - a = cpu.gr[RD]; - b = cpu.gr[RS]; - cpu.gr[RD] = a + b + C_VALUE (); - tmp = iu_carry (a, b, C_VALUE ()); - NEW_C (tmp); - } - break; - case 0x07: /* subc */ - { - unsigned long tmp, a, b; - a = cpu.gr[RD]; - b = cpu.gr[RS]; - cpu.gr[RD] = a - b + C_VALUE () - 1; - tmp = iu_carry (a,~b, C_VALUE ()); - NEW_C (tmp); - } - break; - case 0x08: /* illegal */ - case 0x09: /* illegal*/ - cpu.asregs.exception = SIGILL; - break; - case 0x0A: /* movf */ - if (C_OFF()) - cpu.gr[RD] = cpu.gr[RS]; - break; - case 0x0B: /* lsr */ - { - unsigned long dst, src; - dst = cpu.gr[RD]; - src = cpu.gr[RS]; - /* We must not rely solely upon the native shift operations, since they - may not match the M*Core's behaviour on boundary conditions. */ - dst = src > 31 ? 0 : dst >> src; - cpu.gr[RD] = dst; - } - break; - case 0x0C: /* cmphs */ - NEW_C ((unsigned long )cpu.gr[RD] >= - (unsigned long)cpu.gr[RS]); - break; - case 0x0D: /* cmplt */ - NEW_C ((long)cpu.gr[RD] < (long)cpu.gr[RS]); - break; - case 0x0E: /* tst */ - NEW_C ((cpu.gr[RD] & cpu.gr[RS]) != 0); - break; - case 0x0F: /* cmpne */ - NEW_C (cpu.gr[RD] != cpu.gr[RS]); - break; - case 0x10: case 0x11: /* mfcr */ - { - unsigned r; - r = IMM5; - if (r <= LAST_VALID_CREG) - cpu.gr[RD] = cpu.cr[r]; - else - cpu.asregs.exception = SIGILL; - } - break; - - case 0x12: /* mov */ - cpu.gr[RD] = cpu.gr[RS]; - if (tracing) - fprintf (stderr, "MOV %x into reg %d", cpu.gr[RD], RD); - break; - - case 0x13: /* bgenr */ - if (cpu.gr[RS] & 0x20) - cpu.gr[RD] = 0; - else - cpu.gr[RD] = 1 << (cpu.gr[RS] & 0x1F); - break; - - case 0x14: /* rsub */ - cpu.gr[RD] = cpu.gr[RS] - cpu.gr[RD]; - break; - - case 0x15: /* ixw */ - cpu.gr[RD] += cpu.gr[RS]<<2; - break; - - case 0x16: /* and */ - cpu.gr[RD] &= cpu.gr[RS]; - break; - - case 0x17: /* xor */ - cpu.gr[RD] ^= cpu.gr[RS]; - break; - - case 0x18: case 0x19: /* mtcr */ - { - unsigned r; - r = IMM5; - if (r <= LAST_VALID_CREG) - cpu.cr[r] = cpu.gr[RD]; - else - cpu.asregs.exception = SIGILL; - - /* we might have changed register sets... */ - if (SR_AF ()) - cpu.asregs.active_gregs = & cpu.asregs.alt_gregs[0]; - else - cpu.asregs.active_gregs = & cpu.asregs.gregs[0]; - } - break; - - case 0x1A: /* asr */ - /* We must not rely solely upon the native shift operations, since they - may not match the M*Core's behaviour on boundary conditions. */ - if (cpu.gr[RS] > 30) - cpu.gr[RD] = ((long) cpu.gr[RD]) < 0 ? -1 : 0; - else - cpu.gr[RD] = (long) cpu.gr[RD] >> cpu.gr[RS]; - break; - - case 0x1B: /* lsl */ - /* We must not rely solely upon the native shift operations, since they - may not match the M*Core's behaviour on boundary conditions. */ - cpu.gr[RD] = cpu.gr[RS] > 31 ? 0 : cpu.gr[RD] << cpu.gr[RS]; - break; - - case 0x1C: /* addu */ - cpu.gr[RD] += cpu.gr[RS]; - break; - - case 0x1D: /* ixh */ - cpu.gr[RD] += cpu.gr[RS] << 1; - break; - - case 0x1E: /* or */ - cpu.gr[RD] |= cpu.gr[RS]; - break; - - case 0x1F: /* andn */ - cpu.gr[RD] &= ~cpu.gr[RS]; - break; - case 0x20: case 0x21: /* addi */ - cpu.gr[RD] = - cpu.gr[RD] + (IMM5 + 1); - break; - case 0x22: case 0x23: /* cmplti */ - { - int tmp = (IMM5 + 1); - if (cpu.gr[RD] < tmp) - { - SET_C(); - } - else - { - CLR_C(); - } - } - break; - case 0x24: case 0x25: /* subi */ - cpu.gr[RD] = - cpu.gr[RD] - (IMM5 + 1); - break; - case 0x26: case 0x27: /* illegal */ - cpu.asregs.exception = SIGILL; - break; - case 0x28: case 0x29: /* rsubi */ - cpu.gr[RD] = - IMM5 - cpu.gr[RD]; - break; - case 0x2A: case 0x2B: /* cmpnei */ - if (cpu.gr[RD] != IMM5) - { - SET_C(); - } - else - { - CLR_C(); - } - break; - - case 0x2C: case 0x2D: /* bmaski, divu */ - { - unsigned imm = IMM5; - - if (imm == 1) - { - int exe; - int rxnlz, r1nlz; - unsigned int rx, r1; - - rx = cpu.gr[RD]; - r1 = cpu.gr[1]; - exe = 0; - - /* unsigned divide */ - cpu.gr[RD] = (word) ((unsigned int) cpu.gr[RD] / (unsigned int)cpu.gr[1] ); - - /* compute bonus_cycles for divu */ - for (r1nlz = 0; ((r1 & 0x80000000) == 0) && (r1nlz < 32); r1nlz ++) - r1 = r1 << 1; - - for (rxnlz = 0; ((rx & 0x80000000) == 0) && (rxnlz < 32); rxnlz ++) - rx = rx << 1; - - if (r1nlz < rxnlz) - exe += 4; - else - exe += 5 + r1nlz - rxnlz; - - if (exe >= (2 * memcycles - 1)) - { - bonus_cycles += exe - (2 * memcycles) + 1; - } - } - else if (imm == 0 || imm >= 8) - { - /* bmaski */ - if (imm == 0) - cpu.gr[RD] = -1; - else - cpu.gr[RD] = (1 << imm) - 1; - } - else - { - /* illegal */ - cpu.asregs.exception = SIGILL; - } - } - break; - case 0x2E: case 0x2F: /* andi */ - cpu.gr[RD] = cpu.gr[RD] & IMM5; - break; - case 0x30: case 0x31: /* bclri */ - cpu.gr[RD] = cpu.gr[RD] & ~(1< 0)) || ((rx >= 0) && (r1 < 0))) - sc = 1; - else - sc = 0; - - rx = abs (rx); - r1 = abs (r1); - - /* signed divide, general registers are of type int, so / op is OK */ - cpu.gr[RD] = cpu.gr[RD] / cpu.gr[1]; - - for (r1nlz = 0; ((r1 & 0x80000000) == 0) && (r1nlz < 32) ; r1nlz ++ ) - r1 = r1 << 1; - - for (rxnlz = 0; ((rx & 0x80000000) == 0) && (rxnlz < 32) ; rxnlz ++ ) - rx = rx << 1; - - if (r1nlz < rxnlz) - exe += 5; - else - exe += 6 + r1nlz - rxnlz + sc; - - if (exe >= (2 * memcycles - 1)) - { - bonus_cycles += exe - (2 * memcycles) + 1; - } - } - else if (imm >= 7) - { - /* bgeni */ - cpu.gr[RD] = (1 << IMM5); - } - else - { - /* illegal */ - cpu.asregs.exception = SIGILL; - } - break; - } - case 0x34: case 0x35: /* bseti */ - cpu.gr[RD] = cpu.gr[RD] | (1 << IMM5); - break; - case 0x36: case 0x37: /* btsti */ - NEW_C (cpu.gr[RD] >> IMM5); - break; - case 0x38: case 0x39: /* xsr, rotli */ - { - unsigned imm = IMM5; - unsigned long tmp = cpu.gr[RD]; - if (imm == 0) - { - word cbit; - cbit = C_VALUE(); - NEW_C (tmp); - cpu.gr[RD] = (cbit << 31) | (tmp >> 1); - } - else - cpu.gr[RD] = (tmp << imm) | (tmp >> (32 - imm)); - } - break; - case 0x3A: case 0x3B: /* asrc, asri */ - { - unsigned imm = IMM5; - long tmp = cpu.gr[RD]; - if (imm == 0) - { - NEW_C (tmp); - cpu.gr[RD] = tmp >> 1; - } - else - cpu.gr[RD] = tmp >> imm; - } - break; - case 0x3C: case 0x3D: /* lslc, lsli */ - { - unsigned imm = IMM5; - unsigned long tmp = cpu.gr[RD]; - if (imm == 0) - { - NEW_C (tmp >> 31); - cpu.gr[RD] = tmp << 1; - } - else - cpu.gr[RD] = tmp << imm; - } - break; - case 0x3E: case 0x3F: /* lsrc, lsri */ - { - unsigned imm = IMM5; - unsigned long tmp = cpu.gr[RD]; - if (imm == 0) - { - NEW_C (tmp); - cpu.gr[RD] = tmp >> 1; - } - else - cpu.gr[RD] = tmp >> imm; - } - break; - case 0x40: case 0x41: case 0x42: case 0x43: - case 0x44: case 0x45: case 0x46: case 0x47: - case 0x48: case 0x49: case 0x4A: case 0x4B: - case 0x4C: case 0x4D: case 0x4E: case 0x4F: - cpu.asregs.exception = SIGILL; - break; - case 0x50: - util (inst & 0xFF); - break; - case 0x51: case 0x52: case 0x53: - case 0x54: case 0x55: case 0x56: case 0x57: - case 0x58: case 0x59: case 0x5A: case 0x5B: - case 0x5C: case 0x5D: case 0x5E: case 0x5F: - cpu.asregs.exception = SIGILL; - break; - case 0x60: case 0x61: case 0x62: case 0x63: /* movi */ - case 0x64: case 0x65: case 0x66: case 0x67: - cpu.gr[RD] = (inst >> 4) & 0x7F; - break; - case 0x68: case 0x69: case 0x6A: case 0x6B: - case 0x6C: case 0x6D: case 0x6E: case 0x6F: /* illegal */ - cpu.asregs.exception = SIGILL; - break; - case 0x71: case 0x72: case 0x73: - case 0x74: case 0x75: case 0x76: case 0x77: - case 0x78: case 0x79: case 0x7A: case 0x7B: - case 0x7C: case 0x7D: case 0x7E: /* lrw */ - cpu.gr[RX] = rlat ((pc + ((inst & 0xFF) << 2)) & 0xFFFFFFFC); - if (tracing) - fprintf (stderr, "LRW of 0x%x from 0x%x to reg %d", - rlat ((pc + ((inst & 0xFF) << 2)) & 0xFFFFFFFC), - (pc + ((inst & 0xFF) << 2)) & 0xFFFFFFFC, RX); - memops++; - break; - case 0x7F: /* jsri */ - cpu.gr[15] = pc; - if (tracing) - fprintf (stderr, "func call: r2 = %x r3 = %x r4 = %x r5 = %x r6 = %x r7 = %x\n", - cpu.gr[2], cpu.gr[3], cpu.gr[4], cpu.gr[5], cpu.gr[6], cpu.gr[7]); - case 0x70: /* jmpi */ - pc = rlat ((pc + ((inst & 0xFF) << 2)) & 0xFFFFFFFC); - memops++; - bonus_cycles++; - needfetch = 1; - break; - - case 0x80: case 0x81: case 0x82: case 0x83: - case 0x84: case 0x85: case 0x86: case 0x87: - case 0x88: case 0x89: case 0x8A: case 0x8B: - case 0x8C: case 0x8D: case 0x8E: case 0x8F: /* ld */ - cpu.gr[RX] = rlat (cpu.gr[RD] + ((inst >> 2) & 0x003C)); - if (tracing) - fprintf (stderr, "load reg %d from 0x%x with 0x%x", - RX, - cpu.gr[RD] + ((inst >> 2) & 0x003C), cpu.gr[RX]); - memops++; - break; - case 0x90: case 0x91: case 0x92: case 0x93: - case 0x94: case 0x95: case 0x96: case 0x97: - case 0x98: case 0x99: case 0x9A: case 0x9B: - case 0x9C: case 0x9D: case 0x9E: case 0x9F: /* st */ - wlat (cpu.gr[RD] + ((inst >> 2) & 0x003C), cpu.gr[RX]); - if (tracing) - fprintf (stderr, "store reg %d (containing 0x%x) to 0x%x", - RX, cpu.gr[RX], - cpu.gr[RD] + ((inst >> 2) & 0x003C)); - memops++; - break; - case 0xA0: case 0xA1: case 0xA2: case 0xA3: - case 0xA4: case 0xA5: case 0xA6: case 0xA7: - case 0xA8: case 0xA9: case 0xAA: case 0xAB: - case 0xAC: case 0xAD: case 0xAE: case 0xAF: /* ld.b */ - cpu.gr[RX] = rbat (cpu.gr[RD] + RS); - memops++; - break; - case 0xB0: case 0xB1: case 0xB2: case 0xB3: - case 0xB4: case 0xB5: case 0xB6: case 0xB7: - case 0xB8: case 0xB9: case 0xBA: case 0xBB: - case 0xBC: case 0xBD: case 0xBE: case 0xBF: /* st.b */ - wbat (cpu.gr[RD] + RS, cpu.gr[RX]); - memops++; - break; - case 0xC0: case 0xC1: case 0xC2: case 0xC3: - case 0xC4: case 0xC5: case 0xC6: case 0xC7: - case 0xC8: case 0xC9: case 0xCA: case 0xCB: - case 0xCC: case 0xCD: case 0xCE: case 0xCF: /* ld.h */ - cpu.gr[RX] = rhat (cpu.gr[RD] + ((inst >> 3) & 0x001E)); - memops++; - break; - case 0xD0: case 0xD1: case 0xD2: case 0xD3: - case 0xD4: case 0xD5: case 0xD6: case 0xD7: - case 0xD8: case 0xD9: case 0xDA: case 0xDB: - case 0xDC: case 0xDD: case 0xDE: case 0xDF: /* st.h */ - what (cpu.gr[RD] + ((inst >> 3) & 0x001E), cpu.gr[RX]); - memops++; - break; - case 0xE8: case 0xE9: case 0xEA: case 0xEB: - case 0xEC: case 0xED: case 0xEE: case 0xEF: /* bf */ - if (C_OFF()) - { - int disp; - disp = inst & 0x03FF; - if (inst & 0x0400) - disp |= 0xFFFFFC00; - pc += disp<<1; - bonus_cycles++; - needfetch = 1; - } - break; - case 0xE0: case 0xE1: case 0xE2: case 0xE3: - case 0xE4: case 0xE5: case 0xE6: case 0xE7: /* bt */ - if (C_ON()) - { - int disp; - disp = inst & 0x03FF; - if (inst & 0x0400) - disp |= 0xFFFFFC00; - pc += disp<<1; - bonus_cycles++; - needfetch = 1; - } - break; - - case 0xF8: case 0xF9: case 0xFA: case 0xFB: - case 0xFC: case 0xFD: case 0xFE: case 0xFF: /* bsr */ - cpu.gr[15] = pc; - case 0xF0: case 0xF1: case 0xF2: case 0xF3: - case 0xF4: case 0xF5: case 0xF6: case 0xF7: /* br */ - { - int disp; - disp = inst & 0x03FF; - if (inst & 0x0400) - disp |= 0xFFFFFC00; - pc += disp<<1; - bonus_cycles++; - needfetch = 1; - } - break; - - } - - if (tracing) - fprintf (stderr, "\n"); - - if (needfetch) - { - /* Do not let him fetch from a bad address! */ - if (((uword)pc) >= cpu.asregs.msize) - { - if (issue_messages) - fprintf (stderr, "PC loaded at 0x%x is outside of available memory! (0x%x)\n", oldpc, pc); - - cpu.asregs.exception = SIGSEGV; - } - else - { - ibuf = rlat (pc & 0xFFFFFFFC); - needfetch = 0; - } - } - } - while (!cpu.asregs.exception); - - /* Hide away the things we've cached while executing. */ - cpu.asregs.pc = pc; - cpu.asregs.insts += insts; /* instructions done ... */ - cpu.asregs.cycles += insts; /* and each takes a cycle */ - cpu.asregs.cycles += bonus_cycles; /* and extra cycles for branches */ - cpu.asregs.cycles += memops * memcycles; /* and memop cycle delays */ - - signal (SIGINT, sigsave); -} - - -int -sim_write (sd, addr, buffer, size) - SIM_DESC sd; - SIM_ADDR addr; - unsigned char * buffer; - int size; -{ - int i; - init_pointers (); - - memcpy (& cpu.mem[addr], buffer, size); - - return size; -} - -int -sim_read (sd, addr, buffer, size) - SIM_DESC sd; - SIM_ADDR addr; - unsigned char * buffer; - int size; -{ - int i; - init_pointers (); - - memcpy (buffer, & cpu.mem[addr], size); - - return size; -} - - -int -sim_store_register (sd, rn, memory, length) - SIM_DESC sd; - int rn; - unsigned char * memory; - int length; -{ - init_pointers (); - - if (rn < NUM_MCORE_REGS && rn >= 0) - { - if (length == 4) - { - long ival; - - /* misalignment safe */ - ival = mcore_extract_unsigned_integer (memory, 4); - cpu.asints[rn] = ival; - } - - return 4; - } - else - return 0; -} - -int -sim_fetch_register (sd, rn, memory, length) - SIM_DESC sd; - int rn; - unsigned char * memory; - int length; -{ - init_pointers (); - - if (rn < NUM_MCORE_REGS && rn >= 0) - { - if (length == 4) - { - long ival = cpu.asints[rn]; - - /* misalignment-safe */ - mcore_store_unsigned_integer (memory, 4, ival); - } - - return 4; - } - else - return 0; -} - - -int -sim_trace (sd) - SIM_DESC sd; -{ - tracing = 1; - - sim_resume (sd, 0, 0); - - tracing = 0; - - return 1; -} - -void -sim_stop_reason (sd, reason, sigrc) - SIM_DESC sd; - enum sim_stop * reason; - int * sigrc; -{ - if (cpu.asregs.exception == SIGQUIT) - { - * reason = sim_exited; - * sigrc = cpu.gr[PARM1]; - } - else - { - * reason = sim_stopped; - * sigrc = cpu.asregs.exception; - } -} - - -int -sim_stop (sd) - SIM_DESC sd; -{ - cpu.asregs.exception = SIGINT; - return 1; -} - - -void -sim_info (sd, verbose) - SIM_DESC sd; - int verbose; -{ -#ifdef WATCHFUNCTIONS - int w, wcyc; -#endif - double virttime = cpu.asregs.cycles / 36.0e6; - - callback->printf_filtered (callback, "\n\n# instructions executed %10d\n", - cpu.asregs.insts); - callback->printf_filtered (callback, "# cycles %10d\n", - cpu.asregs.cycles); - callback->printf_filtered (callback, "# pipeline stalls %10d\n", - cpu.asregs.stalls); - callback->printf_filtered (callback, "# virtual time taken %10.4f\n", - virttime); - -#ifdef WATCHFUNCTIONS - callback->printf_filtered (callback, "\nNumber of watched functions: %d\n", - ENDWL); - - wcyc = 0; - - for (w = 1; w <= ENDWL; w++) - { - callback->printf_filtered (callback, "WL = %s %8x\n",WLstr[w],WL[w]); - callback->printf_filtered (callback, " calls = %d, cycles = %d\n", - WLcnts[w],WLcyc[w]); - - if (WLcnts[w] != 0) - callback->printf_filtered (callback, - " maxcpc = %d, mincpc = %d, avecpc = %d\n", - WLmax[w],WLmin[w],WLcyc[w]/WLcnts[w]); - wcyc += WLcyc[w]; - } - - callback->printf_filtered (callback, - "Total cycles for watched functions: %d\n",wcyc); -#endif -} - -struct aout -{ - unsigned char sa_machtype[2]; - unsigned char sa_magic[2]; - unsigned char sa_tsize[4]; - unsigned char sa_dsize[4]; - unsigned char sa_bsize[4]; - unsigned char sa_syms[4]; - unsigned char sa_entry[4]; - unsigned char sa_trelo[4]; - unsigned char sa_drelo[4]; -} aout; - -#define LONG(x) (((x)[0]<<24)|((x)[1]<<16)|((x)[2]<<8)|(x)[3]) -#define SHORT(x) (((x)[0]<<8)|(x)[1]) - -SIM_DESC -sim_open (kind, cb, abfd, argv) - SIM_OPEN_KIND kind; - host_callback * cb; - struct bfd * abfd; - char ** argv; -{ - int osize = sim_memory_size; - myname = argv[0]; - callback = cb; - - if (kind == SIM_OPEN_STANDALONE) - issue_messages = 1; - - /* Discard and reacquire memory -- start with a clean slate. */ - sim_size (1); /* small */ - sim_size (osize); /* and back again */ - - set_initial_gprs (); /* Reset the GPR registers. */ - - /* Fudge our descriptor for now. */ - return (SIM_DESC) 1; -} - -void -sim_close (sd, quitting) - SIM_DESC sd; - int quitting; -{ - /* nothing to do */ -} - -SIM_RC -sim_load (sd, prog, abfd, from_tty) - SIM_DESC sd; - char * prog; - bfd * abfd; - int from_tty; -{ - /* Do the right thing for ELF executables; this turns out to be - just about the right thing for any object format that: - - we crack using BFD routines - - follows the traditional UNIX text/data/bss layout - - calls the bss section ".bss". */ - - extern bfd * sim_load_file (); /* ??? Don't know where this should live. */ - bfd * prog_bfd; - - { - bfd * handle; - asection * s_bss; - handle = bfd_openr (prog, 0); /* could be "mcore" */ - - if (!handle) - { - printf("``%s'' could not be opened.\n", prog); - return SIM_RC_FAIL; - } - - /* Makes sure that we have an object file, also cleans gets the - section headers in place. */ - if (!bfd_check_format (handle, bfd_object)) - { - /* wasn't an object file */ - bfd_close (handle); - printf ("``%s'' is not appropriate object file.\n", prog); - return SIM_RC_FAIL; - } - - /* Look for that bss section. */ - s_bss = bfd_get_section_by_name (handle, ".bss"); - - if (!s_bss) - { - printf("``%s'' has no bss section.\n", prog); - return SIM_RC_FAIL; - } - - /* Appropriately paranoid would check that we have - a traditional text/data/bss ordering within memory. */ - - /* figure the end of the bss section */ -#if 0 - printf ("bss section at 0x%08x for 0x%08x bytes\n", - (unsigned long) bfd_get_section_vma (handle, s_bss), - (unsigned long) bfd_section_size (handle, s_bss)); -#endif - heap_ptr = ((unsigned long) bfd_get_section_vma (handle, s_bss) - + (unsigned long) bfd_section_size (handle, s_bss)); - - /* Clean up after ourselves. */ - bfd_close (handle); - - /* XXX: do we need to free the s_bss and handle structures? */ - } - - /* from sh -- dac */ - prog_bfd = sim_load_file (sd, myname, callback, prog, abfd, - sim_kind == SIM_OPEN_DEBUG, - 0, sim_write); - if (prog_bfd == NULL) - return SIM_RC_FAIL; - - target_big_endian = bfd_big_endian (prog_bfd); - - if (abfd == NULL) - bfd_close (prog_bfd); - - return SIM_RC_OK; -} - -SIM_RC -sim_create_inferior (sd, prog_bfd, argv, env) - SIM_DESC sd; - struct bfd * prog_bfd; - char ** argv; - char ** env; -{ - char ** avp; - int nargs = 0; - int nenv = 0; - int s_length; - int l; - unsigned long strings; - unsigned long pointers; - unsigned long hi_stack; - - - /* Set the initial register set. */ - l = issue_messages; - issue_messages = 0; - set_initial_gprs (); - issue_messages = l; - - hi_stack = cpu.asregs.msize - 4; - cpu.asregs.pc = bfd_get_start_address (prog_bfd); - - /* Calculate the argument and environment strings. */ - s_length = 0; - nargs = 0; - avp = argv; - while (avp && *avp) - { - l = strlen (*avp) + 1; /* include the null */ - s_length += (l + 3) & ~3; /* make it a 4 byte boundary */ - nargs++; avp++; - } - - nenv = 0; - avp = env; - while (avp && *avp) - { - l = strlen (*avp) + 1; /* include the null */ - s_length += (l + 3) & ~ 3;/* make it a 4 byte boundary */ - nenv++; avp++; - } - - /* Claim some memory for the pointers and strings. */ - pointers = hi_stack - sizeof(word) * (nenv+1+nargs+1); - pointers &= ~3; /* must be 4-byte aligned */ - cpu.gr[0] = pointers; - - strings = cpu.gr[0] - s_length; - strings &= ~3; /* want to make it 4-byte aligned */ - cpu.gr[0] = strings; - /* dac fix, the stack address must be 8-byte aligned! */ - cpu.gr[0] = cpu.gr[0] - cpu.gr[0] % 8; - - /* Loop through the arguments and fill them in. */ - cpu.gr[PARM1] = nargs; - if (nargs == 0) - { - /* No strings to fill in. */ - cpu.gr[PARM2] = 0; - } - else - { - cpu.gr[PARM2] = pointers; - avp = argv; - while (avp && *avp) - { - /* Save where we're putting it. */ - wlat (pointers, strings); - - /* Copy the string. */ - l = strlen (* avp) + 1; - strcpy ((char *)(cpu.mem + strings), *avp); - - /* Bump the pointers. */ - avp++; - pointers += 4; - strings += l+1; - } - - /* A null to finish the list. */ - wlat (pointers, 0); - pointers += 4; - } - - /* Now do the environment pointers. */ - if (nenv == 0) - { - /* No strings to fill in. */ - cpu.gr[PARM3] = 0; - } - else - { - cpu.gr[PARM3] = pointers; - avp = env; - - while (avp && *avp) - { - /* Save where we're putting it. */ - wlat (pointers, strings); - - /* Copy the string. */ - l = strlen (* avp) + 1; - strcpy ((char *)(cpu.mem + strings), *avp); - - /* Bump the pointers. */ - avp++; - pointers += 4; - strings += l+1; - } - - /* A null to finish the list. */ - wlat (pointers, 0); - pointers += 4; - } - - return SIM_RC_OK; -} - -void -sim_kill (sd) - SIM_DESC sd; -{ - /* nothing to do */ -} - -void -sim_do_command (sd, cmd) - SIM_DESC sd; - char * cmd; -{ - /* Nothing there yet; it's all an error. */ - - if (cmd != NULL) - { - char ** simargv = buildargv (cmd); - - if (strcmp (simargv[0], "watch") == 0) - { - if ((simargv[1] == NULL) || (simargv[2] == NULL)) - { - fprintf (stderr, "Error: missing argument to watch cmd.\n"); - return; - } - - ENDWL++; - - WL[ENDWL] = strtol (simargv[2], NULL, 0); - WLstr[ENDWL] = strdup (simargv[1]); - fprintf (stderr, "Added %s (%x) to watchlist, #%d\n",WLstr[ENDWL], - WL[ENDWL], ENDWL); - - } - else if (strcmp (simargv[0], "dumpmem") == 0) - { - unsigned char * p; - FILE * dumpfile; - - if (simargv[1] == NULL) - fprintf (stderr, "Error: missing argument to dumpmem cmd.\n"); - - fprintf (stderr, "Writing dumpfile %s...",simargv[1]); - - dumpfile = fopen (simargv[1], "w"); - p = cpu.mem; - fwrite (p, cpu.asregs.msize-1, 1, dumpfile); - fclose (dumpfile); - - fprintf (stderr, "done.\n"); - } - else if (strcmp (simargv[0], "clearstats") == 0) - { - cpu.asregs.cycles = 0; - cpu.asregs.insts = 0; - cpu.asregs.stalls = 0; - ENDWL = 0; - } - else if (strcmp (simargv[0], "verbose") == 0) - { - issue_messages = 2; - } - else - { - fprintf (stderr,"Error: \"%s\" is not a valid M.CORE simulator command.\n", - cmd); - } - } - else - { - fprintf (stderr, "M.CORE sim commands: \n"); - fprintf (stderr, " watch \n"); - fprintf (stderr, " dumpmem \n"); - fprintf (stderr, " clearstats\n"); - fprintf (stderr, " verbose\n"); - } -} - -void -sim_set_callbacks (ptr) - host_callback * ptr; -{ - callback = ptr; -}
interp.c Property changes : Deleted: svn:eol-style ## -1 +0,0 ## -native \ No newline at end of property Deleted: svn:keywords ## -1 +0,0 ## -Id \ No newline at end of property Index: configure.ac =================================================================== --- configure.ac (revision 816) +++ configure.ac (nonexistent) @@ -1,14 +0,0 @@ -dnl Process this file with autoconf to produce a configure script. -AC_PREREQ(2.59)dnl -AC_INIT(Makefile.in) -AC_CONFIG_HEADER(config.h:config.in) - -sinclude(../common/aclocal.m4) - -# Bugs in autoconf 2.59 break the call to SIM_AC_COMMON, hack around -# it by inlining the macro's contents. -sinclude(../common/common.m4) - -AC_CHECK_HEADERS(unistd.h) - -SIM_AC_OUTPUT
configure.ac Property changes : Deleted: svn:eol-style ## -1 +0,0 ## -native \ No newline at end of property Deleted: svn:keywords ## -1 +0,0 ## -Id \ No newline at end of property Index: ChangeLog =================================================================== --- ChangeLog (revision 816) +++ ChangeLog (nonexistent) @@ -1,135 +0,0 @@ -2006-12-21 Hans-Peter Nilsson - - * config.in: Regenerate. - -2006-06-13 Richard Earnshaw - - * configure: Regenerated. - -2006-06-05 Daniel Jacobowitz - - * configure: Regenerated. - -2006-05-31 Daniel Jacobowitz - - * configure: Regenerated. - -2005-03-23 Mark Kettenis - - * configure: Regenerate. - -2005-01-14 Andrew Cagney - - * configure.ac: Sinclude aclocal.m4 before common.m4. Add - explicit call to AC_CONFIG_HEADER. - * configure: Regenerate. - -2005-01-12 Andrew Cagney - - * configure.ac: Update to use ../common/common.m4. - * configure: Re-generate. - -2005-01-11 Andrew Cagney - - * configure: Regenerated to track ../common/aclocal.m4 changes. - -2005-01-07 Andrew Cagney - - * configure.ac: Rename configure.in, require autoconf 2.59. - * configure: Re-generate. - -2004-12-08 Hans-Peter Nilsson - - * configure: Regenerate for ../common/aclocal.m4 update. - -2003-10-11 Alan Modra - - * interp.c (sim_load): Don't refer directly to _cooked_size and vma; - Use bfd_section_size and bfd_get_section_vma. - -2003-02-27 Andrew Cagney - - * interp.c (sim_open, sim_create_inferior): Rename _bfd to bfd. - -2002-06-16 Andrew Cagney - - * configure: Regenerated to track ../common/aclocal.m4 changes. - -2002-06-08 Andrew Cagney - - * interp.c: Include "gdb/callback.h" and "gdb/remote-sim.h". - -Tue May 23 21:39:23 2000 Andrew Cagney - - * configure: Regenerated to track ../common/aclocal.m4 changes. - -2000-02-14 Nick Clifton - - * interp.c (handle_trap1): Fix handling of fclose system call. - Patch submitted by . - -2000-02-10 Nick Clifton - - * interp.c (target_big_endian): New variable. - (mcore_extract_unsigned_integer, mcore_store_unsigned_integer, - wlat, rlat, sim_resume, sim_load): Add supprot for little - endian targets. - -2000-01-13 Nick Clifton - - * interp.c (sim_resume): Do not rely upon host semantics of shift - operators to implement M*Core semantics. - -Thu Sep 2 18:15:53 1999 Andrew Cagney - - * configure: Regenerated to track ../common/aclocal.m4 changes. - -1999-06-23 Nick Clifton - - * sysdep.h: Do not define prototypes for memcpy and strchr if they - are macros. - -1999-05-21 Nick Clifton - - * interp.c (sim_resume): Add more tracing output. - -1999-05-17 Keith Seitz - - * interp.c (NUM_MCORE_REGS): Increase by one to allow access to PC. - (sim_resume): Correct off by one instruction error when a breakpoint - is hit. - -1999-05-08 Felix Lee - - * configure: Regenerated to track ../common/aclocal.m4 changes. - -1999-05-10 Nick Clifton - - * interp.c (sim_resume): Record PC in case it is needed for error - messages and the original has been corrupted. - -1999-05-07 Nick Clifton - - * interp.c (sim_resume): Fix typo 'oze' -> 'doze'. - (util): Handle 0x50FF stubs properly. - - -1999-04-29 Nick Clifton - - * interp.c (set_initial_gprs): Only display memory range if - verbose option has been set. - -1999-04-22 Nick Clifton - - * interp.c: Add tracing and verbose options. - Fixed trap and syscall emulations. - -1999-04-08 Nick Clifton - - * interp.c: New file: Simulator for MCore. - * sysdep.h: New file: Systems definitions for MCore simulator. - * configure.in: New file: Configure script for MCore simulator. - * configure: New file: Genreated. - * config,in: New file: Config support. - * Makefile.in: New file: Meta makefile for MCore simulator. -
ChangeLog Property changes : Deleted: svn:eol-style ## -1 +0,0 ## -native \ No newline at end of property Deleted: svn:keywords ## -1 +0,0 ## -Id \ No newline at end of property Index: config.in =================================================================== --- config.in (revision 816) +++ config.in (nonexistent) @@ -1,92 +0,0 @@ -/* config.in. Generated from configure.ac by autoheader. */ - -/* Define to 1 if translation of program messages to the user's native - language is requested. */ -#undef ENABLE_NLS - -/* Define to 1 if you have the header file. */ -#undef HAVE_DLFCN_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_ERRNO_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_FCNTL_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_FPU_CONTROL_H - -/* Define to 1 if you have the `getrusage' function. */ -#undef HAVE_GETRUSAGE - -/* Define to 1 if you have the header file. */ -#undef HAVE_INTTYPES_H - -/* Define to 1 if you have the `nsl' library (-lnsl). */ -#undef HAVE_LIBNSL - -/* Define to 1 if you have the `socket' library (-lsocket). */ -#undef HAVE_LIBSOCKET - -/* Define to 1 if you have the header file. */ -#undef HAVE_MEMORY_H - -/* Define to 1 if you have the `sigaction' function. */ -#undef HAVE_SIGACTION - -/* Define to 1 if you have the header file. */ -#undef HAVE_STDINT_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_STDLIB_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_STRINGS_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_STRING_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_SYS_RESOURCE_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_SYS_STAT_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_SYS_TIME_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_SYS_TYPES_H - -/* Define to 1 if you have the `time' function. */ -#undef HAVE_TIME - -/* Define to 1 if you have the header file. */ -#undef HAVE_TIME_H - -/* Define to 1 if you have the header file. */ -#undef HAVE_UNISTD_H - -/* Define to 1 if you have the `__setfpucw' function. */ -#undef HAVE___SETFPUCW - -/* Define to the address where bug reports for this package should be sent. */ -#undef PACKAGE_BUGREPORT - -/* Define to the full name of this package. */ -#undef PACKAGE_NAME - -/* Define to the full name and version of this package. */ -#undef PACKAGE_STRING - -/* Define to the one symbol short name of this package. */ -#undef PACKAGE_TARNAME - -/* Define to the version of this package. */ -#undef PACKAGE_VERSION - -/* Define as the return type of signal handlers (`int' or `void'). */ -#undef RETSIGTYPE - -/* Define to 1 if you have the ANSI C header files. */ -#undef STDC_HEADERS Index: sysdep.h =================================================================== --- sysdep.h (revision 816) +++ sysdep.h (nonexistent) @@ -1,94 +0,0 @@ -/* System includes and definitions used by the Motorola MCore simulator. - Copyright (C) 1999, 2007, 2008 Free Software Foundation, Inc. - Contributed by Cygnus Solutions. - -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 3 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, see . */ - -#ifndef __SYSDEP_H -#define __SYSDEP_H - -#ifndef hosts_std_host_H -#include -#include -#include -#include -#include -#include -#include -#include -#include "ansidecl.h" - -#ifndef O_ACCMODE -#define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR) -#endif -#ifndef SEEK_SET -#define SEEK_SET 0 -#endif -#ifndef SEEK_CUR -#define SEEK_CUR 1 -#endif -#ifdef STDC_HEADERS -#include -/*#include */ -#else -extern char * mktemp (); -#ifndef memset -extern PTR memset (); -#endif - -#ifndef DONTDECLARE_MALLOC -extern PTR malloc (); -extern PTR realloc (); -#endif - -#ifndef __GNUC__ -extern PTR memcpy (); -#else -/* char * memcpy (); */ -#endif - -#ifdef __STDC__ -extern void free (); -#else -extern int free(); -#endif - -#ifndef strchr -extern char * strchr(); -#endif -extern char * getenv(); -extern PTR memchr(); -extern char * strrchr(); - -extern char * strrchr(); -extern char * ctime(); -extern long atol(); -extern char * getenv(); -#endif /* STDC_HEADERS */ - -#ifndef BYTES_IN_PRINTF_INT -#define BYTES_IN_PRINTF_INT 4 -#endif - -#include "fopen-same.h" -#define hosts_std_host_H -#endif - -#ifdef STDC_HEADERS -#include -#endif /* STDC_HEADERS */ - -#endif /* __SYSDEP_H */
sysdep.h Property changes : Deleted: svn:eol-style ## -1 +0,0 ## -native \ No newline at end of property Deleted: svn:keywords ## -1 +0,0 ## -Id \ No newline at end of property

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